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      decimals="4"
      id="x_0f2b552c-5fd9-43b3-87b0-6932d4024e75"
      unitRef="pure">0.0750</oef:AnnlRtrPct>
    <oef:AnnlRtrPct
      contextRef="S000004913_C000013282_01Jan2021_31Dec2021"
      decimals="4"
      id="x_59f48265-cbe2-4fa6-b503-3aca3558370f"
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      contextRef="S000004913_C000013282_01Jan2022_31Dec2022"
      decimals="4"
      id="bc6c308c-88bd-4816-8ecf-a11dab24190f"
      unitRef="pure">-0.0985</oef:AnnlRtrPct>
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      contextRef="S000004913_C000013282_01Jan2023_31Dec2023"
      decimals="4"
      id="x_8419f3bd-6fa2-4aa6-b2ba-c95558ceb210"
      unitRef="pure">0.1788</oef:AnnlRtrPct>
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      contextRef="S000004913_C000013282_01Jan2024_31Dec2024"
      decimals="4"
      id="c8a09c65-c611-4fec-bf3a-c03885592f2e"
      unitRef="pure">0.0525</oef:AnnlRtrPct>
    <oef:AnnlRtrPct
      contextRef="S000077554_C000238042_01Jan2024_31Dec2024"
      decimals="4"
      id="x_399a9170-b221-4f6d-ae33-4cc7d2681f17"
      unitRef="pure">0.3279</oef:AnnlRtrPct>
    <oef:AnnlRtrPct
      contextRef="S000004224_C000011881_01Jan2015_31Dec2015"
      decimals="4"
      id="x_52a3d574-1089-44ed-97f3-dabc6fde2be9"
      unitRef="pure">-0.0561</oef:AnnlRtrPct>
    <oef:AnnlRtrPct
      contextRef="S000004224_C000011881_01Jan2016_31Dec2016"
      decimals="4"
      id="x_8378c3ea-9578-41aa-aa56-c11e045af89e"
      unitRef="pure">0.0171</oef:AnnlRtrPct>
    <oef:AnnlRtrPct
      contextRef="S000004224_C000011881_01Jan2017_31Dec2017"
      decimals="4"
      id="ccfd06f8-9d3a-4888-a339-d4c023641a6c"
      unitRef="pure">0.2573</oef:AnnlRtrPct>
    <oef:AnnlRtrPct
      contextRef="S000004224_C000011881_01Jan2018_31Dec2018"
      decimals="4"
      id="cddd0a7c-1291-43c1-9e77-01946775aaa8"
      unitRef="pure">-0.2055</oef:AnnlRtrPct>
    <oef:AnnlRtrPct
      contextRef="S000004224_C000011881_01Jan2019_31Dec2019"
      decimals="4"
      id="x_8ccb1950-7685-4691-8f81-4c9c3d3e520e"
      unitRef="pure">0.2452</oef:AnnlRtrPct>
    <oef:AnnlRtrPct
      contextRef="S000004224_C000011881_01Jan2020_31Dec2020"
      decimals="4"
      id="x_1a37422d-cf1f-4d6d-95fa-8816a9feea04"
      unitRef="pure">0.0746</oef:AnnlRtrPct>
    <oef:AnnlRtrPct
      contextRef="S000004224_C000011881_01Jan2021_31Dec2021"
      decimals="4"
      id="x_9cc3566b-57e9-437e-ace3-a6841a04ee7d"
      unitRef="pure">0.1214</oef:AnnlRtrPct>
    <oef:AnnlRtrPct
      contextRef="S000004224_C000011881_01Jan2022_31Dec2022"
      decimals="4"
      id="x_83430140-4ef7-4b1f-a675-ccd29d739ba0"
      unitRef="pure">-0.1043</oef:AnnlRtrPct>
    <oef:AnnlRtrPct
      contextRef="S000004224_C000011881_01Jan2023_31Dec2023"
      decimals="4"
      id="x_5d6cd709-0338-4aaa-9abe-365ed60cee4b"
      unitRef="pure">0.2049</oef:AnnlRtrPct>
    <oef:AnnlRtrPct
      contextRef="S000004224_C000011881_01Jan2024_31Dec2024"
      decimals="4"
      id="x_12a18bfa-12a1-4ad3-a2bc-d11f679704ee"
      unitRef="pure">0.1298</oef:AnnlRtrPct>
    <oef:ProspectusDate
      contextRef="D_28Feb2025_28Feb2025"
      id="apid_0e52b11f-a649-4d3e-a9da-914f90a8e9b0">2025-06-30</oef:ProspectusDate>
    <oef:ObjectiveHeading
      contextRef="S000005485"
      id="d4ee6070-e500-453d-b2c6-c4e49d8a648b">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-weight:bold;"&gt;Investment objective&lt;/span&gt;</oef:ObjectiveHeading>
    <oef:ObjectivePrimaryTextBlock
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      id="e9a690f1-160a-42f9-8f73-ab79ab9bfc7f">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;Positive total return.&lt;/span&gt;</oef:ObjectivePrimaryTextBlock>
    <oef:ExpenseHeading
      contextRef="S000005485"
      id="ae729eb6-7b45-4ccd-96a5-b08e89fed1f6">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-weight:bold;"&gt;Fees and expenses&lt;/span&gt;</oef:ExpenseHeading>
    <oef:ExpenseNarrativeTextBlock
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      id="a5004d99-e92e-47a9-9964-bb998d431afb">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;margin-left:3.76%;"&gt;The table below describes the fees and expenses that you may bear for each class of shares if you buy, hold, and sell shares of the &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;Fund. You may pay other fees, such as brokerage commissions and other fees to financial intermediaries, which are not reflected in the table and example below.&lt;/span&gt;</oef:ExpenseNarrativeTextBlock>
    <oef:OperatingExpensesCaption
      contextRef="S000005485"
      id="x_97f83efd-7e2a-4cea-bbad-ccd6f44eaabc">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-weight:bold;"&gt;Annual Fund operating expenses &lt;/span&gt; &lt;br/&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;(expenses that you bear each year as a percentage of the value of your investment)&lt;/span&gt;</oef:OperatingExpensesCaption>
    <oef:ManagementFeesOverAssets
      contextRef="S000005485_C000014927"
      decimals="4"
      id="a7017005-8256-449b-9ab3-a05ee24936ee"
      unitRef="pure">0.0080</oef:ManagementFeesOverAssets>
    <oef:ManagementFeesOverAssets
      contextRef="S000005485_C000109350"
      decimals="4"
      id="a9103e13-9400-4d41-a641-9d85f9bb7e5f"
      unitRef="pure">0.0075</oef:ManagementFeesOverAssets>
    <oef:ManagementFeesOverAssets
      contextRef="S000005485_C000213373"
      decimals="4"
      id="b9ead4d0-d7c6-4b12-b752-5d64c136fb1f"
      unitRef="pure">0.0080</oef:ManagementFeesOverAssets>
    <oef:ManagementFeesOverAssets
      contextRef="S000005485_C000014925"
      decimals="4"
      id="c3be4c00-7b1d-468f-9929-2bb2614f43f5"
      unitRef="pure">0.0080</oef:ManagementFeesOverAssets>
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      contextRef="S000005485_C000014927"
      decimals="4"
      id="a2b5b4a2-424c-4b69-b7b0-ceee119944cd"
      unitRef="pure">0.0003</oef:OtherExpensesOverAssets>
    <oef:OtherExpensesOverAssets
      contextRef="S000005485_C000109350"
      decimals="4"
      id="x_2e6e700a-08a4-4d03-b4a6-cf522ae9c8b6"
      unitRef="pure">0.0003</oef:OtherExpensesOverAssets>
    <oef:OtherExpensesOverAssets
      contextRef="S000005485_C000213373"
      decimals="4"
      id="f159632c-f515-4672-a174-b6750942c363"
      unitRef="pure">0.0003</oef:OtherExpensesOverAssets>
    <oef:OtherExpensesOverAssets
      contextRef="S000005485_C000014925"
      decimals="4"
      id="a814ba0f-0f92-4e00-a828-a21f3d44e35c"
      unitRef="pure">0.0014</oef:OtherExpensesOverAssets>
    <oef:AcquiredFundFeesAndExpensesOverAssets
      contextRef="S000005485_C000014927"
      decimals="4"
      id="x_186ccf50-bccd-44b9-9b20-0b44b5aa8c29"
      unitRef="pure">0.0045</oef:AcquiredFundFeesAndExpensesOverAssets>
    <oef:AcquiredFundFeesAndExpensesOverAssets
      contextRef="S000005485_C000109350"
      decimals="4"
      id="d2bfcbfc-618a-4751-bff4-b13e1ea8af5a"
      unitRef="pure">0.0045</oef:AcquiredFundFeesAndExpensesOverAssets>
    <oef:AcquiredFundFeesAndExpensesOverAssets
      contextRef="S000005485_C000213373"
      decimals="4"
      id="x_1dbd1f22-29db-4840-8444-40c8296c4828"
      unitRef="pure">0.0045</oef:AcquiredFundFeesAndExpensesOverAssets>
    <oef:AcquiredFundFeesAndExpensesOverAssets
      contextRef="S000005485_C000014925"
      decimals="4"
      id="x_01c52c33-4d44-4c57-ab9d-fbcf7b4ddfee"
      unitRef="pure">0.0045</oef:AcquiredFundFeesAndExpensesOverAssets>
    <oef:ExpensesOverAssets
      contextRef="S000005485_C000014927"
      decimals="4"
      id="x_2fc52c64-5b1e-4174-87c8-45140ec6f70e"
      unitRef="pure">0.0128</oef:ExpensesOverAssets>
    <oef:ExpensesOverAssets
      contextRef="S000005485_C000109350"
      decimals="4"
      id="x_19f91f88-13cf-4020-85aa-579cb3d65469"
      unitRef="pure">0.0123</oef:ExpensesOverAssets>
    <oef:ExpensesOverAssets
      contextRef="S000005485_C000213373"
      decimals="4"
      id="x_00ee60e3-838c-451f-b504-8642039025f0"
      unitRef="pure">0.0128</oef:ExpensesOverAssets>
    <oef:ExpensesOverAssets
      contextRef="S000005485_C000014925"
      decimals="4"
      id="c4767467-b553-4773-9803-b6d3d9ce57ac"
      unitRef="pure">0.0139</oef:ExpensesOverAssets>
    <oef:FeeWaiverOrReimbursementOverAssets
      contextRef="S000005485_C000014927"
      decimals="4"
      id="x_338f0dee-6314-49db-ba7a-1ae2daeadbb4"
      unitRef="pure">-0.0005</oef:FeeWaiverOrReimbursementOverAssets>
    <oef:FeeWaiverOrReimbursementOverAssets
      contextRef="S000005485_C000109350"
      decimals="4"
      id="x_08ec8a14-8808-4ff5-bcea-cdbfa7a1de4c"
      unitRef="pure">-0.0005</oef:FeeWaiverOrReimbursementOverAssets>
    <oef:FeeWaiverOrReimbursementOverAssets
      contextRef="S000005485_C000213373"
      decimals="4"
      id="cf4b454c-87d8-4820-9740-97401421328c"
      unitRef="pure">-0.0005</oef:FeeWaiverOrReimbursementOverAssets>
    <oef:FeeWaiverOrReimbursementOverAssets
      contextRef="S000005485_C000014925"
      decimals="4"
      id="abdb7402-7a5d-4518-8418-384f8b1f922c"
      unitRef="pure">-0.0005</oef:FeeWaiverOrReimbursementOverAssets>
    <oef:NetExpensesOverAssets
      contextRef="S000005485_C000014927"
      decimals="4"
      id="x_142f7481-d204-4b37-b911-47ab314885bb"
      unitRef="pure">0.0123</oef:NetExpensesOverAssets>
    <oef:NetExpensesOverAssets
      contextRef="S000005485_C000109350"
      decimals="4"
      id="c630f77c-ac18-425f-bb67-f6033a92972b"
      unitRef="pure">0.0118</oef:NetExpensesOverAssets>
    <oef:NetExpensesOverAssets
      contextRef="S000005485_C000213373"
      decimals="4"
      id="x_91dfc6dd-546b-4e50-b54d-19fd5670cffc"
      unitRef="pure">0.0123</oef:NetExpensesOverAssets>
    <oef:NetExpensesOverAssets
      contextRef="S000005485_C000014925"
      decimals="4"
      id="x_65331d75-c94f-4f98-a315-0406a3d3cd08"
      unitRef="pure">0.0134</oef:NetExpensesOverAssets>
    <oef:FeeWaiverOrReimbursementOverAssetsDateOfTermination
      contextRef="S000005485"
      id="d5b9d5e7-6ecd-4472-842d-6047677fe603">&lt;span style="color:#000000;font-family:Times New Roman;font-size:8pt;font-style:italic;"&gt;June 30, 2026&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:8pt;font-style:italic;"&gt;June 30, 2026&lt;/span&gt;</oef:FeeWaiverOrReimbursementOverAssetsDateOfTermination>
    <oef:ExpenseExampleHeading
      contextRef="S000005485"
      id="x_69f77319-6fdb-4aa0-ab5c-453d9df1779d">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-weight:bold;"&gt;Example&lt;/span&gt;</oef:ExpenseExampleHeading>
    <oef:ExpenseExampleNarrativeTextBlock
      contextRef="S000005485"
      id="b446df93-c75d-4899-875c-9a42a053cc60">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;margin-left:3.76%;"&gt;This example is intended to help you compare the cost of investing in the Fund with the cost of investing in other funds. The &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;example assumes that you invest $10,000 in the Fund for the time periods indicated, regardless of whether or not you redeem your shares at the end of such periods. The example also assumes that your investment has a 5% return each year and that the Fund&#x2019;s operating expenses remain the same as those shown in the table. The one year amounts shown reflect applicable expense reimbursements and waivers noted in the expense table. Although your actual costs may be higher or lower, based on these assumptions your costs would be:&lt;/span&gt;</oef:ExpenseExampleNarrativeTextBlock>
    <oef:ExpenseExampleYear01
      contextRef="S000005485_C000014927"
      decimals="INF"
      id="c39d06de-89ba-4743-ac12-b4cc81f6738e"
      unitRef="USD">125</oef:ExpenseExampleYear01>
    <oef:ExpenseExampleYear03
      contextRef="S000005485_C000014927"
      decimals="INF"
      id="x_910f9d9f-19f7-42e4-bb27-d704496e4f12"
      unitRef="USD">401</oef:ExpenseExampleYear03>
    <oef:ExpenseExampleYear05
      contextRef="S000005485_C000014927"
      decimals="INF"
      id="x_42f68bf2-f5dd-4ef7-bb09-2e1fc23dfbf1"
      unitRef="USD">697</oef:ExpenseExampleYear05>
    <oef:ExpenseExampleYear10
      contextRef="S000005485_C000014927"
      decimals="INF"
      id="ca0e659d-2f50-497e-9851-8984fc3e5afd"
      unitRef="USD">1541</oef:ExpenseExampleYear10>
    <oef:ExpenseExampleYear01
      contextRef="S000005485_C000109350"
      decimals="INF"
      id="x_4bb30f4c-155f-4722-8640-1568ba92b33c"
      unitRef="USD">120</oef:ExpenseExampleYear01>
    <oef:ExpenseExampleYear03
      contextRef="S000005485_C000109350"
      decimals="INF"
      id="x_0d5ce81e-751b-4350-bbcb-f4685020b7b0"
      unitRef="USD">385</oef:ExpenseExampleYear03>
    <oef:ExpenseExampleYear05
      contextRef="S000005485_C000109350"
      decimals="INF"
      id="a6c04dc7-96aa-49a3-844d-8a0d78ba1066"
      unitRef="USD">671</oef:ExpenseExampleYear05>
    <oef:ExpenseExampleYear10
      contextRef="S000005485_C000109350"
      decimals="INF"
      id="x_634c774f-c2d5-462b-9a1e-b7ceca45dec1"
      unitRef="USD">1484</oef:ExpenseExampleYear10>
    <oef:ExpenseExampleYear01
      contextRef="S000005485_C000213373"
      decimals="INF"
      id="x_11f89f87-fb6c-4d9b-b16b-cb840b187a0f"
      unitRef="USD">125</oef:ExpenseExampleYear01>
    <oef:ExpenseExampleYear03
      contextRef="S000005485_C000213373"
      decimals="INF"
      id="x_3e5df6fa-466c-4f9c-bbd6-75fbb6566704"
      unitRef="USD">401</oef:ExpenseExampleYear03>
    <oef:ExpenseExampleYear05
      contextRef="S000005485_C000213373"
      decimals="INF"
      id="x_7b5c3690-fd6b-4bc6-a9a0-9488bb0c112a"
      unitRef="USD">697</oef:ExpenseExampleYear05>
    <oef:ExpenseExampleYear10
      contextRef="S000005485_C000213373"
      decimals="INF"
      id="x_430e14ef-6c34-44d8-8355-598c3508963b"
      unitRef="USD">1541</oef:ExpenseExampleYear10>
    <oef:ExpenseExampleYear01
      contextRef="S000005485_C000014925"
      decimals="INF"
      id="x_955994a7-ef42-433f-b856-3fe493392415"
      unitRef="USD">136</oef:ExpenseExampleYear01>
    <oef:ExpenseExampleYear03
      contextRef="S000005485_C000014925"
      decimals="INF"
      id="ec5fbc75-4e1d-4357-91d9-98c76eebda31"
      unitRef="USD">435</oef:ExpenseExampleYear03>
    <oef:ExpenseExampleYear05
      contextRef="S000005485_C000014925"
      decimals="INF"
      id="x_5e2eff20-5730-41bf-aed8-0773aed943cd"
      unitRef="USD">756</oef:ExpenseExampleYear05>
    <oef:ExpenseExampleYear10
      contextRef="S000005485_C000014925"
      decimals="INF"
      id="x_6f9c4792-4ce5-484d-a3f7-2591273f5921"
      unitRef="USD">1664</oef:ExpenseExampleYear10>
    <oef:PortfolioTurnoverHeading
      contextRef="S000005485"
      id="e871c501-86ea-4297-b602-e317cb2653ac">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-weight:bold;"&gt;Portfolio turnover&lt;/span&gt;</oef:PortfolioTurnoverHeading>
    <oef:PortfolioTurnoverTextBlock
      contextRef="S000005485"
      id="bb2b062a-2a91-499c-b40a-7bfd6d3bb657">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;margin-left:3.76%;"&gt;The Fund pays transaction costs, such as commissions, when it buys and sells securities. A higher portfolio turnover rate may &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;result in higher transaction costs and, for holders of Fund shares subject to U.S. taxes, higher income taxes. These transaction costs, which are not reflected in Annual Fund operating expenses or in the Example, affect the Fund&#x2019;s performance.&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; During its fiscal year &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;ended February 28, 2025, the Fund&#x2019;s portfolio turnover rate (excluding short-term investments) was &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;24&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;% of the average value of its portfolio securities.&lt;/span&gt;</oef:PortfolioTurnoverTextBlock>
    <oef:PortfolioTurnoverRate
      contextRef="S000005485"
      decimals="4"
      id="x_1d9955e7-ee62-408d-a58e-de19b3b1f597"
      unitRef="pure">0.24</oef:PortfolioTurnoverRate>
    <oef:StrategyHeading
      contextRef="S000005485"
      id="e9ae088d-b356-402e-badd-6e2d6db087b3">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-weight:bold;"&gt;Principal investment strategies&lt;/span&gt;</oef:StrategyHeading>
    <oef:StrategyNarrativeTextBlock
      contextRef="S000005485"
      id="ac036991-f0f1-44d2-b84c-cc790a5a59fa">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;margin-left:3.76%;"&gt;The Fund seeks annualized returns of 5% (net of fees) above the Consumer Price Index and expects annualized volatility (standard &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;deviation) of 5-10%, each over a complete market cycle. GMO does not manage the Fund to, or control the Fund&#x2019;s risk relative to, any securities index or securities benchmark. The Fund is a fund of funds and invests primarily in Implementation Fund, other series of GMO Trust whether now existing or created in the future, including the Fixed Income Funds and the Alternative Funds, and in GMO-managed exchange-traded funds (collectively, the &#x201c;underlying GMO Funds&#x201d;) (see &#x201c;Additional Information About the Funds&#x2019; Investment Strategies, Risks, and Expenses &#x2014; Asset Allocation Funds&#x201d;).&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;margin-left:3.76%;"&gt;GMO seeks to achieve the Fund&#x2019;s investment objective by investing the Fund&#x2019;s assets in asset classes GMO believes offer the most &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;attractive risk-adjusted returns. GMO uses its quantitative multi-year forecasts of returns among asset classes, together with its assessment of the relative risks of such asset classes, to determine the asset classes in which the Fund invests and how much the Fund invests in each asset class. An important component of those forecasts is GMO&#x2019;s expectation that valuations ultimately revert to their fundamental fair (or intrinsic) value over a complete market cycle. GMO changes the Fund&#x2019;s holdings of particular asset classes in response to changes in GMO&#x2019;s investment outlook and its assessment of market valuations and may use redemptions or purchases of Fund shares to rebalance the Fund&#x2019;s investments. The factors GMO considers and investment methods GMO uses can change over time.&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;margin-left:3.76%;"&gt;The Fund is permitted to invest in any asset class (e.g., U.S., non-U.S., and emerging market equity; U.S., non-U.S., and emerging &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;market fixed income (including asset-backed securities and municipal bonds); and commodities), strategy (e.g., long/short and event-driven strategies), sector, country, or region, and at times may have substantial exposure to a single asset class, sector, country, region, issuer, or currency and companies with similar market capitalizations. In addition, the Fund is not restricted in its exposure to any particular market and may invest in securities of companies of any market capitalization and, in the case of debt instruments, of any credit quality (including below investment grade securities, commonly referred to as &#x201c;high yield&#x201d; or &#x201c;junk bonds&#x201d;), maturity and duration. GMO&#x2019;s ability to shift investments among asset classes is not subject to any limits.&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;margin-left:3.76%;"&gt;The Fund typically has substantial exposure to derivatives and short-sales. Leverage is not a principal component of the Fund&#x2019;s &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;investment strategy. However, because of its derivative exposure, the Fund may at times have gross investment exposure in excess of its net assets (i.e., the Fund may be leveraged) and, therefore, may be subject to higher risk of loss during those times than if the Fund were not leveraged.&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;margin-left:3.76%;"&gt;In seeking to achieve the Fund&#x2019;s investment objective, GMO may invest a significant portion of the Fund&#x2019;s net assets in cash and &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;cash equivalents. In addition, the Fund may lend its portfolio securities. The Fund also may invest in U.S. Treasury Fund, in money market funds unaffiliated with GMO, and directly in the types of investments typically held by money market funds.&lt;/span&gt;</oef:StrategyNarrativeTextBlock>
    <oef:RiskTextBlock
      contextRef="S000005485_RiskLoseMoneyMember"
      id="ebfab10a-f2ba-4b0c-84bb-ba43e31712c2">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;Many factors can affect this value, and you may lose money by investing in the Fund.&lt;/span&gt;</oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="S000005485_RiskNotInsuredDepositoryInstitutionMember"
      id="x_2969a9d0-a14e-4f25-9a10-0b0616c22b77">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;An investment in the Fund is not a bank deposit and is not insured or guaranteed by the FDIC or &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;any government agency.&lt;/span&gt;</oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="S000005485_NonDiversifiedFundsRiskMember"
      id="x_6a374d27-b863-4263-935a-2f84934cb9ec">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;Some of the underlying funds are non-diversified investment &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;companies under the Investment Company Act of 1940, as amended, and therefore a decline in the market price of a particular security held by those funds may affect their performance more than if they were diversified investment companies.&lt;/span&gt;</oef:RiskTextBlock>
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      contextRef="S000005485_ManagementandOperationalRiskMember"
      id="eb442c7c-7e61-437a-a192-54732977f753">&lt;span style="color:#000000;font-family:Times New Roman;font-size:8pt;"&gt;&#x25cf;&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-style:italic;"&gt;Management and Operational Risk&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; &#x2013; The Fund runs the risk that GMO&#x2019;s investment techniques will fail to produce intended results&#160;including the annualized returns and volatility the Fund is seeking to achieve. Even if the Fund achieves those returns or that volatility over a market cycle, it may experience shorter periods of significantly lower returns or higher volatility, or both. Over the three-year period and the period beginning with the inception of the Fund&#x2019;s current investment strategy (July 23, 2003), in each case ending December 31, 2024, the Fund&#x2019;s annualized net return (Class III shares, before taxes) less the Consumer Price Index was 0.67% and 4.21%, respectively. Over the three-year period and the period beginning July 31, 2003, in each case ending December 31, 2024, the Fund&#x2019;s annualized net standard deviation (calculated using monthly net returns, before taxes) was 9.10% and 7.78%, respectively. See also &#x201c;Performance&#x201d; below.&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; GMO uses quantitative models as part of its investment process. GMO&#x2019;s &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;models may not accurately predict future market movements. In addition, GMO&#x2019;s models rely on assumptions and data that are subject to limitations (e.g., inaccuracies, staleness) that could adversely affect their predictive value.&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; The Fund also runs the risk that &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;GMO&#x2019;s assessment of an investment, including a security&#x2019;s fundamental fair (or intrinsic) value, is wrong or that deficiencies in GMO&#x2019;s or another service provider&#x2019;s internal systems or controls will cause losses for the Fund or impair Fund operations.&lt;/span&gt;</oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="S000005485_MarketRiskEquitiesRiskMember"
      id="x_98a11fec-afe9-468c-a60a-6d197c74c9f2">&lt;span style="color:#000000;font-family:Times New Roman;font-size:8pt;"&gt;&#x25cf;&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-style:italic;"&gt;Market Risk &#x2013; Equities &#x2013; &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;The market price of an equity in the Fund&#x2019;s portfolio may decline due to factors affecting the issuer or its industry or the economy and equity markets generally. If the Fund purchases an equity for less than its fundamental fair (or intrinsic) value as assessed by GMO, the Fund runs the risk that the market price of the equity will not appreciate or will decline (for example, if GMO&#x2019;s assessment proves to be incorrect or the market fails to recognize the equity&#x2019;s intrinsic value). The Fund also may purchase equities that typically trade at higher multiples of current earnings than other securities, and the market prices of &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;margin-left:0.00%;"&gt;these equities often are more sensitive to changes in future earnings expectations and interest rates than the market prices of equities trading at lower multiples. Declines in stock market prices generally are likely to reduce the net asset value of the Fund&#x2019;s shares.&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;margin-left:0.00%;"&gt;When the Fund writes put options on a stock index, the value of those options will decline when the value of that index declines. The value of an index depends on the value of the equity securities in the index. Also, the Fund&#x2019;s investment strategy of writing put options on stock indices can be expected to cause that strategy to underperform relative to those indices when the value of those &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;indices rises sharply.&lt;/span&gt;</oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="S000005485_NonUSInvestmentRiskMember"
      id="x_081dd840-4f4e-42a6-a497-123b0be951d7">&lt;span style="color:#000000;font-family:Times New Roman;font-size:8pt;"&gt;&#x25cf;&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-style:italic;"&gt;Non-U.S. Investment Risk&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; &#x2013; The market prices of many non-U.S. securities fluctuate more than those of U.S. securities. Many non-U.S. securities markets are less stable, smaller, less liquid, and less regulated than U.S. securities markets, and the cost of trading in those markets often is higher than in U.S. securities markets. In addition, non-U.S. securities issuers often are not subject to as much regulation as U.S. issuers, and the reporting, recordkeeping, accounting, custody, and auditing standards to which those issuers are subject often are not as rigorous as U.S. standards. In addition, the Fund is subject to taxation by countries other than the United States, including potentially on a retroactive basis, on (i) capital gains it realizes or dividends, interest, or other amounts it realizes or accrues in respect of non-U.S. investments; (ii) transactions in those investments; and (iii) repatriation of proceeds generated from the sale or other disposition of those investments.&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; Also, the Fund needs a license to invest directly in securities &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;traded in many non-U.S. securities markets, and the Fund is subject to the risk that its license is terminated or suspended. In some non-U.S. securities markets, prevailing custody and trade settlement practices (e.g., the requirement to pay for securities prior to receipt) expose the Fund to credit and other risks. Further, adverse changes in investment regulations, capital requirements or exchange controls could adversely affect the value of the Fund&#x2019;s investments. The risks above (such as substantial price fluctuations and market instability, illiquidity and lack of regulation) and other risks (e.g., nationalization, expropriation or other confiscation of assets of non-U.S. issuers, difficulties enforcing legal judgments or contractual rights and geopolitical risks) tend to be higher for investments in the securities of issuers tied economically to emerging countries. The economies of emerging countries often depend predominantly on only a few industries or commodities and often are more volatile than the economies of developed countries.&lt;/span&gt;</oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="S000005485_MarketRiskFixedIncomeRiskMember"
      id="x_41d30724-48ce-4c78-b427-6239e8ee5475">&lt;span style="color:#000000;font-family:Times New Roman;font-size:8pt;"&gt;&#x25cf;&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-style:italic;"&gt;Market Risk &#x2013; Fixed Income&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; &#x2013; The market price of a fixed income investment can decline due to market-related factors, including rising interest or inflation rates and widening credit spreads, or decreased liquidity due, for example, to market uncertainty about the value of a fixed income investment (or class of fixed income investments).&lt;/span&gt;</oef:RiskTextBlock>
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      contextRef="S000005485_DerivativesandShortSalesRiskMember"
      id="x_02d39aa7-e8df-428b-aa6c-bd61c1fce59b">&lt;span style="color:#000000;font-family:Times New Roman;font-size:8pt;"&gt;&#x25cf;&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-style:italic;"&gt;Derivatives and Short Sales Risk&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; &#x2013; The use of derivatives involves the risk that their value may not change as expected relative to changes in the value of the underlying assets, pools of assets, rates, currencies or indices. Derivatives also present other risks, including market risk, illiquidity risk, currency risk, credit risk, leveraging risk, commodities risk and counterparty risk. The market price of an option is affected by many factors, including changes in the market prices or dividend rates of underlying securities (or in the case of indices, the securities in such indices); the time remaining before expiration; changes in interest rates or exchange rates; and changes in the actual or perceived volatility of the relevant index or underlying securities. The Fund typically creates short investment exposure by selling securities short or by taking a derivative position in which the value of the derivative moves in the opposite direction from the price of an underlying asset, pool of assets, rate, currency or index. Specifically, the net asset value of the Fund&#x2019;s shares will be adversely affected if the securities or other assets that are the subject of the Fund&#x2019;s short exposures appreciate in value. The risk of loss associated with derivatives that provide short investment exposure and short sales of securities is theoretically unlimited.&lt;/span&gt;</oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="S000005485_SmallerCompanyRiskMember"
      id="x_32e40dec-f3b9-4d6a-947f-0cbbb8e0a9c6">&lt;span style="color:#000000;font-family:Times New Roman;font-size:8pt;"&gt;&#x25cf;&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-style:italic;"&gt;Smaller Company Risk&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; &#x2013; Smaller companies may have limited product lines, markets, or financial resources, lack the competitive strength of larger companies, have less experienced managers or depend on a few key employees. The securities of companies with smaller market capitalizations often are less widely held and trade less frequently and in lesser quantities, and their market prices often fluctuate more, than the securities of companies with larger market capitalizations.&lt;/span&gt;</oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="S000005485_FuturesContractsRiskMember"
      id="x_83551204-93c8-4258-89d6-13c7f72f0b9b">&lt;span style="color:#000000;font-family:Times New Roman;font-size:8pt;"&gt;&#x25cf;&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-style:italic;"&gt;Futures Contracts Risk&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; &#x2013; The loss to the Fund resulting from its use of futures contracts is potentially unlimited. Futures markets are highly volatile, and the use of futures contracts increases the volatility of the Fund&#x2019;s net asset value. A liquid market may not exist for any particular futures contract at any particular time, and the Fund may be unable when it wishes to terminate its exposure under that contract. When the Fund uses futures contracts for hedging purposes, it runs the risk that changes in the prices of the contracts will not correlate perfectly with changes in the securities, index, or other asset underlying the contracts or movements in the prices of the Fund&#x2019;s investments that are subject to the hedge. In addition, the Fund may be unable to recover or may be delayed in recovering margin or other amounts deposited with a futures commission merchant or futures clearinghouse. Foreign futures contracts are often less liquid and more volatile than U.S. futures contracts.&lt;/span&gt;</oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="S000005485_CreditRiskMember"
      id="x_030e19e0-94f5-479a-b566-184ab231a782">&lt;span style="color:#000000;font-family:Times New Roman;font-size:8pt;"&gt;&#x25cf;&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-style:italic;"&gt;Credit Risk&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; &#x2013; The Fund runs the risk that the issuer or guarantor of a fixed income investment (including a sovereign or quasi-sovereign debt issuer) or the obligor of an obligation underlying an asset-backed security will be unable or unwilling to satisfy its obligation to pay principal and interest or otherwise to honor its obligations in a timely manner or at all. The market price of a fixed income investment will normally decline as a result of the failure of an issuer, guarantor, or obligor to meet its payment obligations or in anticipation of such a failure. Below investment grade investments (commonly referred to as high yield or &#x201c;junk&#x201d; bonds) have speculative characteristics and are subject to greater credit risk than other fixed income investments. Negative changes in economic conditions or other circumstances are more likely to impair the ability of issuers of below investment grade investments to make principal and interest payments than issuers of investment grade investments.&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; In addition, investments in emerging country sovereign &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;margin-left:0.00%;"&gt;or quasi-sovereign debt are subject to a heightened risk that the issuer responsible for repayment of the debt may be unable or unwilling to pay interest and repay principal when due, and the Fund may lack recourse against the issuer in the event of a default. Investments in quasi-sovereign debt also are subject to the risk that the issuer will default independently of its sovereign.&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;margin-left:0.00%;"&gt;Investments in distressed or defaulted or other low quality debt investments generally are considered speculative and are subject to substantial risks not normally associated with investments in higher quality securities, including adverse business, financial or economic conditions that lead to their issuers&#x2019; payment defaults and insolvency proceedings. In particular, distressed or defaulted obligations might be repaid, if at all, only after lengthy workout or bankruptcy proceedings during which the issuer might not make any interest or other payments, and the Fund may incur additional expenses in its effort to be repaid. If GMO&#x2019;s assessment of the eventual recovery value of a distressed or defaulted debt investment proves incorrect, the Fund may lose a substantial portion or all &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;of its original investment or may be required to accept cash or instruments worth less than its original investment.&lt;/span&gt;</oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="S000005485_CurrencyRiskMember"
      id="fa18eef5-4170-4bd7-b73b-b5c800f73f2b">&lt;span style="color:#000000;font-family:Times New Roman;font-size:8pt;"&gt;&#x25cf;&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-style:italic;"&gt;Currency Risk&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; &#x2013; Fluctuations in exchange rates can adversely affect the market value of the Fund&#x2019;s foreign currency holdings and investments denominated in foreign currencies.&lt;/span&gt;</oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="S000005485_FundofFundsRiskMember"
      id="x_7f3fc810-294e-4f46-97f2-41e3a8cf04ab">&lt;span style="color:#000000;font-family:Times New Roman;font-size:8pt;"&gt;&#x25cf;&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-style:italic;"&gt;Fund of Funds Risk&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; &#x2013; The Fund is indirectly exposed to all of the risks of an investment in the underlying funds in which it invests, including the risk that those underlying funds will not perform as expected.&lt;/span&gt;</oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="S000005485_CommoditiesRiskMember"
      id="x_1f430737-aadb-44ff-8eb9-7467b3ddc235">&lt;span style="color:#000000;font-family:Times New Roman;font-size:8pt;"&gt;&#x25cf;&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-style:italic;"&gt;Commodities Risk&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; &#x2013; Commodity prices can be extremely volatile, and exposure to commodities can cause the net asset value of the Fund&#x2019;s shares to decline or fluctuate significantly&#160;in a rapid and unpredictable manner.&lt;/span&gt;</oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="S000005485_EventDrivenRiskMember"
      id="x_2f561de7-ee21-4b2a-8fe0-dca3837df234">&lt;span style="color:#000000;font-family:Times New Roman;font-size:8pt;"&gt;&#x25cf;&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-style:italic;"&gt;Event-Driven Risk&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; &#x2013; If the Fund purchases securities in anticipation of a proposed merger, acquisition, exchange offer, tender offer, or other similar transaction and that transaction later appears likely to be delayed or unlikely to be consummated or, in fact, is not consummated or is delayed, the market price of the securities purchased by the Fund may decline sharply, resulting in losses to the Fund. The risk/reward payout of event-driven strategies (such as merger arbitrage) typically is asymmetric, with the losses in failed transactions often far exceeding the gains in successful transactions. Event-driven strategies are subject to the risk of overall market movements, and the Fund may experience losses even if a transaction is consummated.&lt;/span&gt;</oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="S000005485_IlliquidityRiskMember"
      id="x_3c6069d2-dfb6-487c-ba0e-3293595b7fec">&lt;span style="color:#000000;font-family:Times New Roman;font-size:8pt;"&gt;&#x25cf;&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-style:italic;"&gt;Illiquidity Risk&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; &#x2013; Low trading volume, lack of a market maker, large position size, or legal restrictions increase the risk that the Fund or an underlying fund is limited or prevented from selling particular securities or closing derivative positions at desirable prices at a particular time or at all.&lt;/span&gt;</oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="S000005485_LeveragingRiskMember"
      id="x_677e9bcd-6038-42fc-a368-d6433513317b">&lt;span style="color:#000000;font-family:Times New Roman;font-size:8pt;"&gt;&#x25cf;&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-style:italic;"&gt;Leveraging Risk&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; &#x2013; The use of derivatives, short sales and securities lending can create leverage. Leverage increases the Fund&#x2019;s losses when the value of its investments (including derivatives) declines. In addition, the Fund&#x2019;s portfolio will be leveraged if it exercises its right to delay payment on a redemption and the value of the Fund&#x2019;s assets declines between the time a redemption request is treated as being received by the Fund and the time the Fund liquidates assets to fund that redemption.&lt;/span&gt;</oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="S000005485_CounterpartyRiskMember"
      id="x_29d10c37-8a0b-48e6-8808-4c9407aa3019">&lt;span style="color:#000000;font-family:Times New Roman;font-size:8pt;"&gt;&#x25cf;&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-style:italic;"&gt;Counterparty Risk&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; &#x2013; The Fund runs the risk that the counterparty to a derivatives contract or a clearing member used by the Fund to hold a cleared derivatives contract is unable or unwilling to make timely settlement payments, return the Fund&#x2019;s collateral or otherwise honor its obligations.&lt;/span&gt;</oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="S000005485_MarketDisruptionandGeopoliticalRiskMember"
      id="e92ce154-e79f-4926-b995-79cf14d05b87">&lt;span style="color:#000000;font-family:Times New Roman;font-size:8pt;"&gt;&#x25cf;&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-style:italic;"&gt;Market Disruption and Geopolitical Risk&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; &#x2013; Geopolitical and other events (e.g., wars, pandemics, sanctions, terrorism, diplomatic tensions, dramatic changes in regulatory and/or foreign policy, cyberattacks, and rapid technological developments such as artificial intelligence) often disrupt securities markets and adversely affect the general economy or particular economies and markets. Those events, as well as other changes in non-U.S. and U.S. economic and political conditions, could exacerbate other risks or otherwise reduce the value of the Fund&#x2019;s investments.&lt;/span&gt;</oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="S000005485_MarketRiskAssetBackedSecuritiesRiskMember"
      id="eadbea81-3015-4197-a4f1-eaf1acb5ebe4">&lt;span style="color:#000000;font-family:Times New Roman;font-size:8pt;"&gt;&#x25cf;&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-style:italic;"&gt;Market Risk &#x2013; Asset-Backed Securities&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; &#x2013; The market price of asset-backed securities, like that of other fixed income investments, can decline for a variety of reasons, including increases in interest rates. In addition, the market price can decrease due to a reduction in or decrease in the reliability of their payment streams. Payment streams associated with asset-backed securities held by the Fund depend on many factors (e.g., the cash flow generated by the assets backing the securities, deal structure, and creditworthiness of any credit-support provider), and a problem in any of these factors can lead to a reduction in the payment stream GMO expected the Fund to receive when the Fund purchased the asset-backed security. The liquidity of asset-backed securities (particularly below investment grade asset-backed securities) may change over time. During periods of deteriorating economic conditions, such as recessions, or periods of rising unemployment, delinquencies and losses generally increase, sometimes dramatically, for asset-backed securities whose underlying assets consist of loans, sales contracts, receivables and other obligations.&lt;/span&gt;</oef:RiskTextBlock>
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      id="b4912a7e-9b13-4fa5-821a-e892d821c180">&lt;span style="color:#000000;font-family:Times New Roman;font-size:8pt;"&gt;&#x25cf;&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-style:italic;"&gt;Focused Investment Risk&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; &#x2013; Investments in countries, regions, asset classes, sectors, industries, currencies, or issuers that are subject to the same or similar risk factors and investments whose market prices are closely correlated are subject to higher overall risk than investments that are more diversified or whose market prices are not as closely correlated.&lt;/span&gt;</oef:RiskTextBlock>
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      id="x_7318c8b4-2efc-40bf-8490-27465e564d13">&lt;span style="color:#000000;font-family:Times New Roman;font-size:8pt;"&gt;&#x25cf;&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-style:italic;"&gt;Large Transactions Risk&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; &#x2013; To the extent that a large number of shares of the Fund is held by a single shareholder (e.g., an institutional investor or another GMO Fund) or a group of shareholders with a common investment strategy (e.g., GMO asset allocation accounts), the Fund is subject to the risk that a redemption by (or caused by) that shareholder or group will require the &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;margin-left:0.00%;"&gt;Fund to sell investments at disadvantageous prices, disrupt the Fund&#x2019;s operations, lead to temporary overexposure to the Fund&#x2019;s intended investment program or force the Fund&#x2019;s liquidation. The Fund also may be subject to these effects when a number of &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;shareholders collectively redeem or sell a large amount of Fund shares.&lt;/span&gt;</oef:RiskTextBlock>
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      id="x_25e9134c-8122-421d-aecd-c468e7eb8142">&lt;span style="color:#000000;font-family:Times New Roman;font-size:8pt;"&gt;&#x25cf;&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-style:italic;"&gt;Value Investing Risk&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; &#x2013; Issuers whose securities GMO believes are undervalued may not realize their business potential, may never be recognized by the market as being undervalued and/or may be appropriately priced notwithstanding GMO&#x2019;s assessment. These and other factors may cause the price of value stocks to decline, resulting in losses to the Fund.&lt;/span&gt;</oef:RiskTextBlock>
    <oef:BarChartAndPerformanceTableHeading
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      id="x_8f2a88a8-7f17-4f38-a5fc-d0b758a44207">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-weight:bold;"&gt;Performance&lt;/span&gt;</oef:BarChartAndPerformanceTableHeading>
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      id="x_3bba6cc1-84cb-4d15-9187-9d1a2ed2414b">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;margin-left:3.76%;"&gt;The bar chart and table below provide some indication of the risks of investing in the Fund by showing changes in the Fund&#x2019;s &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;annual total returns from year to year for the periods indicated and by comparing the Fund&#x2019;s average annual total returns for different calendar periods with those of the Consumer Price Index, the Bloomberg U.S. Treasury Inflation Notes 1-10 Year Index, and two broad-based securities market indices.&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; Share classes not shown would have substantially similar annual returns to those below because all &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;share classes invest in the same portfolio of securities. Annual returns vary among share classes to the extent that they bear different expenses. Prior to January 1, 2012, the Fund served as a principal component of a broader GMO real return strategy that also included a pooled investment vehicle with a cash-like benchmark. Since January 1, 2012, the Fund has been managed as a standalone investment. &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;After-tax returns are calculated using the historical highest individual federal marginal income tax rates and do not reflect the impact of &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;state and local taxes.&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; Actual after-tax returns depend on your tax situation and may differ from those shown. After-tax returns shown are &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;not relevant if you are tax-exempt or if you hold your Fund shares through tax-advantaged arrangements (such as a 401(k) plan or individual retirement account). &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;After-tax returns are shown for Class III shares only; after-tax returns for other classes will vary.&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;Updated performance information for the Fund is available at &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;www.gmo.com&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;. &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;Past performance (before and after taxes) is not an &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;indication of future performance.&lt;/span&gt;</oef:PerformanceNarrativeTextBlock>
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      id="fe170651-1995-49c1-b957-e1c0690a831f">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;margin-left:3.76%;"&gt;The bar chart and table below provide some indication of the risks of investing in the Fund by showing changes in the Fund&#x2019;s &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;annual total returns from year to year for the periods indicated and by comparing the Fund&#x2019;s average annual total returns for different calendar periods with those of the Consumer Price Index, the Bloomberg U.S. Treasury Inflation Notes 1-10 Year Index, and two broad-based securities market indices.&lt;/span&gt;</oef:PerformanceInformationIllustratesVariabilityOfReturns>
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      id="fb9d2eeb-56db-49a2-80ee-f51a533376c0">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;After-tax returns are calculated using the historical highest individual federal marginal income tax rates and do not reflect the impact of &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;state and local taxes.&lt;/span&gt;</oef:PerformanceTableUsesHighestFederalRate>
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      id="x_2a5d209d-fe89-40c9-b900-7edf44cd4b73">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; Actual after-tax returns depend on your tax situation and may differ from those shown. After-tax returns shown are &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;not relevant if you are tax-exempt or if you hold your Fund shares through tax-advantaged arrangements (such as a 401(k) plan or individual retirement account). &lt;/span&gt;</oef:PerformanceTableNotRelevantToTaxDeferred>
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      id="x_8fc13ed6-1986-48b2-8cff-84a0a4716a08">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;www.gmo.com&lt;/span&gt;</oef:PerformanceAvailabilityWebSiteAddress>
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      id="x_729038da-b703-474b-ba02-129052b06c0d">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;Past performance (before and after taxes) is not an &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;indication of future performance.&lt;/span&gt;</oef:PerformancePastDoesNotIndicateFuture>
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      id="daaa3f3f-5bdb-4ca1-b98d-b4e496673176">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-weight:bold;"&gt;Annual Total Returns/Class III Shares&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:6.5pt;font-weight:bold;position:relative;top:-2.75pt;"&gt;1&lt;/span&gt; &lt;br/&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;Years Ending December 31&lt;/span&gt;</oef:BarChartHeading>
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      id="be22063b-99e0-4d78-8a1c-478ce033a28f">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;Highest Quarter:&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;7.89%&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;-sec-ix-hidden:x_9cf3c2e9-5eac-4785-a824-a2e6763ada0b"&gt;4Q 2022&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;Lowest Quarter:&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;-16.05%&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;-sec-ix-hidden:x_822f2c48-3cc4-4653-bbfb-e4af3fa99737"&gt;1Q 2020&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;Year-to-Date:&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;4.71%&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;As of&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;3/31/2025&lt;/span&gt;</oef:BarChartClosingTextBlock>
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      id="x_609e0c43-12e8-48b7-9b4d-bce6f5bf045b">2025-03-31</oef:BarChartYearToDateReturnDate>
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    <oef:ObjectiveHeading
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      id="ffbceb2d-529c-443f-995b-f0037d1badd2">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-weight:bold;"&gt;Investment objective&lt;/span&gt;</oef:ObjectiveHeading>
    <oef:ObjectivePrimaryTextBlock
      contextRef="S000005487"
      id="f17d1c4e-1def-46b9-9e37-d8dcf3d73e77">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;margin-left:3.76%;"&gt;Total return greater than that of its benchmark, the GMO Global Asset Allocation Index, an internally maintained index computed &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;by GMO consisting of 65% MSCI ACWI and 35% Bloomberg U.S. Aggregate Index.&lt;/span&gt;</oef:ObjectivePrimaryTextBlock>
    <oef:ExpenseHeading
      contextRef="S000005487"
      id="bb29be4e-7db0-440c-addf-1f72db7f23fe">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-weight:bold;"&gt;Fees and expenses&lt;/span&gt;</oef:ExpenseHeading>
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      contextRef="S000005487"
      id="x_135ae932-1e9d-4e1f-ba2f-cb83b12506ca">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;margin-left:3.76%;"&gt;The table below describes the fees and expenses that you may bear for each class of shares if you buy, hold, and sell shares of the &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;Fund. You may pay other fees, such as brokerage commissions and other fees to financial intermediaries, which are not reflected in the table and example below.&lt;/span&gt;</oef:ExpenseNarrativeTextBlock>
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      id="ded12cfe-0128-4aeb-bdab-7a827b28a695">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-weight:bold;"&gt;Annual Fund operating expenses &lt;/span&gt; &lt;br/&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;(expenses that you bear each year as a percentage of the value of your investment)&lt;/span&gt;</oef:OperatingExpensesCaption>
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      id="a3bf06da-c8e9-453f-a8b7-ab1d13cca6f7"
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      decimals="4"
      id="x_2f9d33f5-996d-484a-b065-32fce41a84c4"
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      id="ff09651a-7858-4119-a68a-23486a6a0ec6"
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      decimals="4"
      id="x_0b8fb8ed-029b-41fc-953d-4e1f3358af0a"
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      id="x_40cb8969-7b6d-46aa-b2f3-5a83cabc0859"
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      id="x_43084af3-488e-4804-bbe2-38250f8cae9a"
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      id="x_70e5957b-1374-42f8-89d1-52f3f2ca2131"
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      id="x_39428f08-4544-49d0-8151-7004b9370bb0"
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    <oef:NetExpensesOverAssets
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      contextRef="S000005487"
      id="x_7029a857-82a6-4e4f-8bf3-7feafc3dc3a9">&lt;span style="color:#000000;font-family:Times New Roman;font-size:8pt;font-style:italic;"&gt;June 30, 2026&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:8pt;font-style:italic;"&gt;June 30, 2026&lt;/span&gt;</oef:FeeWaiverOrReimbursementOverAssetsDateOfTermination>
    <oef:ExpenseExampleHeading
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      id="x_5f9b1d76-1aa9-454a-9cc6-3de53f6c63ef">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-weight:bold;"&gt;Example&lt;/span&gt;</oef:ExpenseExampleHeading>
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      contextRef="S000005487"
      id="x_85a9f664-3db8-4686-93df-819d6cf7b959">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;margin-left:3.76%;"&gt;This example is intended to help you compare the cost of investing in the Fund with the cost of investing in other funds. The &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;example assumes that you invest $10,000 in the Fund for the time periods indicated, regardless of whether or not you redeem your shares at the end of such periods. The example also assumes that your investment has a 5% return each year and that the Fund&#x2019;s operating expenses remain the same as those shown in the table. The one year amounts shown reflect the expense reimbursement noted in the expense table. Although your actual costs may be higher or lower, based on these assumptions your costs would be:&lt;/span&gt;</oef:ExpenseExampleNarrativeTextBlock>
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      decimals="INF"
      id="fed8d466-da15-4e23-9cfd-693803453023"
      unitRef="USD">81</oef:ExpenseExampleYear01>
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      decimals="INF"
      id="x_59fa17e4-4598-4d04-bde3-88b7d4b08cd7"
      unitRef="USD">263</oef:ExpenseExampleYear03>
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      decimals="INF"
      id="x_383cbeb2-2707-4e29-9a44-2924d9458916"
      unitRef="USD">461</oef:ExpenseExampleYear05>
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      decimals="INF"
      id="x_4b70aae7-612e-4e86-b2bd-99fd285d450b"
      unitRef="USD">1033</oef:ExpenseExampleYear10>
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      decimals="INF"
      id="x_01d8069b-45d1-4e5c-b711-7f4e33a906e9"
      unitRef="USD">81</oef:ExpenseExampleYear01>
    <oef:ExpenseExampleYear03
      contextRef="S000005487_C000213376"
      decimals="INF"
      id="b5ac3345-fd55-4ede-a6b0-829376547491"
      unitRef="USD">263</oef:ExpenseExampleYear03>
    <oef:ExpenseExampleYear05
      contextRef="S000005487_C000213376"
      decimals="INF"
      id="a6928120-a59e-411a-b532-91611a4a5f35"
      unitRef="USD">461</oef:ExpenseExampleYear05>
    <oef:ExpenseExampleYear10
      contextRef="S000005487_C000213376"
      decimals="INF"
      id="x_349281c1-8eeb-4220-a1ad-56b9b88df3dd"
      unitRef="USD">1033</oef:ExpenseExampleYear10>
    <oef:ExpenseExampleYear01
      contextRef="S000005487_C000213377"
      decimals="INF"
      id="x_88d6f652-da4f-4f38-90ef-2249d2d9999b"
      unitRef="USD">94</oef:ExpenseExampleYear01>
    <oef:ExpenseExampleYear03
      contextRef="S000005487_C000213377"
      decimals="INF"
      id="x_4c29eb7f-2579-4cd6-8bdc-5aeffa80f8c3"
      unitRef="USD">304</oef:ExpenseExampleYear03>
    <oef:ExpenseExampleYear05
      contextRef="S000005487_C000213377"
      decimals="INF"
      id="d9cf324d-3a23-414e-a721-ce572bed0901"
      unitRef="USD">531</oef:ExpenseExampleYear05>
    <oef:ExpenseExampleYear10
      contextRef="S000005487_C000213377"
      decimals="INF"
      id="x_6db8dc13-0d69-4ad8-a78b-d1b69aa7227f"
      unitRef="USD">1185</oef:ExpenseExampleYear10>
    <oef:PortfolioTurnoverHeading
      contextRef="S000005487"
      id="x_8e89bebb-763d-4b96-b5be-cfac11f14852">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-weight:bold;"&gt;Portfolio turnover&lt;/span&gt;</oef:PortfolioTurnoverHeading>
    <oef:PortfolioTurnoverTextBlock
      contextRef="S000005487"
      id="x_74cb0879-5772-42f0-864d-1b98cbbf4687">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;margin-left:3.76%;"&gt;The Fund pays transaction costs, such as commissions, when it buys and sells securities. A higher portfolio turnover rate may &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;result in higher transaction costs and, for holders of Fund shares subject to U.S. taxes, higher income taxes. These transaction costs, which are not reflected in Annual Fund operating expenses or in the Example, affect the Fund&#x2019;s performance.&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; During its fiscal year &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;ended February 28, 2025, the Fund&#x2019;s portfolio turnover rate (excluding short-term investments) was &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;12&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;% of the average value of its portfolio securities.&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; That portfolio turnover rate includes investments in U.S. Treasury Fund, which the Fund uses as a short-term &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;investment vehicle for cash management. The Fund&#x2019;s portfolio turnover rate during its fiscal year ended February 28, 2025, excluding transactions in U.S. Treasury Fund and other short-term investments, was 12% of the average value of its portfolio securities.&lt;/span&gt;</oef:PortfolioTurnoverTextBlock>
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      unitRef="pure">0.12</oef:PortfolioTurnoverRate>
    <oef:StrategyHeading
      contextRef="S000005487"
      id="c2bdba49-0c20-4f37-8610-5442c36fe67c">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-weight:bold;"&gt;Principal investment strategies&lt;/span&gt;</oef:StrategyHeading>
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      id="c00d7f57-0490-4f03-83db-e257fef4ebd4">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;margin-left:3.76%;"&gt;The Fund is a fund of funds and invests primarily in shares of other series of GMO Trust whether now existing or created in the &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;future, including the Equity Funds, the Fixed Income Funds, the Implementation Funds, and the Alternative Funds, and in GMO-managed exchange-traded funds (collectively, the &#x201c;underlying GMO Funds&#x201d;) (see &#x201c;Additional Information About the Funds&#x2019; Investment Strategies, Risks, and Expenses &#x2014; Asset Allocation Funds&#x201d;). &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;margin-left:3.76%;"&gt;GMO uses its quantitative multi-year forecasts of returns among asset classes, together with its assessment of the relative risks of &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;asset classes, to determine the asset classes in which the Fund invests and how much the Fund invests in each asset class. An important component of those forecasts is GMO&#x2019;s expectation that valuations ultimately revert to their fundamental fair (or intrinsic) value over a complete market cycle. GMO changes the Fund&#x2019;s asset class exposures in response to changes in GMO&#x2019;s investment outlook and its assessment of market valuations and may use redemptions or purchases of Fund shares to rebalance the Fund&#x2019;s investments. Under normal circumstances, GMO intends to invest not more than 85% of the Fund&#x2019;s net assets in the Equity Funds. The factors GMO considers and investment methods GMO uses can change over time.&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;margin-left:3.76%;"&gt;The Fund is permitted to invest in any asset class (e.g., U.S., non-U.S., and emerging market equity; U.S., non-U.S., and emerging &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;market fixed income (including asset-backed securities and municipal bonds); and commodities), strategy (e.g., long/short and event-driven strategies), sector, country, or region and at times may have substantial exposure to a single asset class, sector, country, region, issuer, or currency and companies with similar market capitalizations. In addition, the Fund is not restricted in its exposure to any particular market and may invest in securities of companies of any market capitalization and, in the case of debt instruments, of any credit quality (including below investment grade securities, commonly referred to as &#x201c;high yield&#x201d; or &#x201c;junk bonds&#x201d;), maturity and duration.&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;margin-left:3.76%;"&gt;In seeking to achieve the Fund&#x2019;s investment objective, GMO may invest a significant portion of the Fund&#x2019;s net assets in cash and &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;cash equivalents. In addition, the Fund may lend its portfolio securities.&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;margin-left:3.76%;"&gt;The Fund also may invest in money market funds unaffiliated with GMO and directly in the types of investments typically held by &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;money market funds.&lt;/span&gt;</oef:StrategyNarrativeTextBlock>
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      contextRef="S000005487_RiskLoseMoneyMember"
      id="bb692358-32ca-475e-89ad-89013b4e3722">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;Many factors can affect this value, and you may lose money by investing in the Fund.&lt;/span&gt;</oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="S000005487_RiskNotInsuredDepositoryInstitutionMember"
      id="x_551229be-a270-4268-9417-3ca797491013">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;An investment in the Fund is not a bank deposit and is not insured or guaranteed by the FDIC or &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;any government agency.&lt;/span&gt;</oef:RiskTextBlock>
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      contextRef="S000005487_ManagementandOperationalRiskMember"
      id="x_7720ebdb-0900-4194-ba15-e1b864184c9b">&lt;span style="color:#000000;font-family:Times New Roman;font-size:8pt;"&gt;&#x25cf;&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-style:italic;"&gt;Management and Operational Risk&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; &#x2013; The Fund runs the risk that GMO&#x2019;s investment techniques will fail to produce intended results.&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;GMO uses quantitative models as part of its investment process. GMO&#x2019;s models may not accurately predict future market movements. In addition, GMO&#x2019;s models rely on assumptions and data that are subject to limitations (e.g., inaccuracies, staleness) that could adversely affect their predictive value.&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; The Fund also runs the risk that GMO&#x2019;s assessment of an investment, including a &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;security&#x2019;s fundamental fair (or intrinsic) value, is wrong or that deficiencies in GMO&#x2019;s or another service provider&#x2019;s internal systems or controls will cause losses for the Fund or impair Fund operations.&lt;/span&gt;</oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="S000005487_MarketRiskEquitiesRiskMember"
      id="x_4e161870-41e2-41f1-aec6-a1d49ccc52df">&lt;span style="color:#000000;font-family:Times New Roman;font-size:8pt;"&gt;&#x25cf;&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-style:italic;"&gt;Market Risk &#x2013; Equities &#x2013; &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;The market price of an equity in the Fund&#x2019;s portfolio may decline due to factors affecting the issuer or its industry or the economy and equity markets generally. If the Fund purchases an equity for less than its fundamental fair (or intrinsic) value as assessed by GMO, the Fund runs the risk that the market price of the equity will not appreciate or will decline (for example, if GMO&#x2019;s assessment proves to be incorrect or the market fails to recognize the equity&#x2019;s intrinsic value). The Fund also may purchase equities that typically trade at higher multiples of current earnings than other securities, and the market prices of these equities often are more sensitive to changes in future earnings expectations and interest rates than the market prices of equities trading at lower multiples. Declines in stock market prices generally are likely to reduce the net asset value of the Fund&#x2019;s shares.&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;When the Fund writes put options on a stock index, the value of those options will decline when the value of that index declines. The value of an index depends on the value of the equity securities in the index. Also, the Fund&#x2019;s investment strategy of writing put options on stock indices can be expected to cause that strategy to underperform relative to those indices when the value of those indices rises sharply.&lt;/span&gt;</oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="S000005487_NonUSInvestmentRiskMember"
      id="x_1223011f-231e-40df-8f00-be8a1d85b091">&lt;span style="color:#000000;font-family:Times New Roman;font-size:8pt;"&gt;&#x25cf;&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-style:italic;"&gt;Non-U.S. Investment Risk&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; &#x2013; The market prices of many non-U.S. securities fluctuate more than those of U.S. securities. Many non-U.S. securities markets are less stable, smaller, less liquid, and less regulated than U.S. securities markets, and the cost of trading in those markets often is higher than in U.S. securities markets. In addition, non-U.S. securities issuers often are not subject to as much regulation as U.S. issuers, and the reporting, recordkeeping, accounting, custody, and auditing standards to which those issuers are &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;margin-left:0.00%;"&gt;subject often are not as rigorous as U.S. standards. In addition, the Fund is subject to taxation by countries other than the United States, including potentially on a retroactive basis, on (i) capital gains it realizes or dividends, interest, or other amounts it realizes or accrues in respect of non-U.S. investments; (ii) transactions in those investments; and (iii) repatriation of proceeds generated from the sale or other disposition of those investments.&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; Also, the Fund needs a license to invest directly in securities &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;margin-left:0.00%;"&gt;traded in many non-U.S. securities markets, and the Fund is subject to the risk that its license is terminated or suspended. In some non-U.S. securities markets, prevailing custody and trade settlement practices (e.g., the requirement to pay for securities prior to receipt) expose the Fund to credit and other risks. Further, adverse changes in investment regulations, capital requirements or exchange controls could adversely affect the value of the Fund&#x2019;s investments. The risks above (such as substantial price fluctuations and market instability, illiquidity and lack of regulation) and other risks (e.g., nationalization, expropriation or other confiscation of assets of non-U.S. issuers, difficulties enforcing legal judgments or contractual rights and geopolitical risks) tend to be higher for investments in the securities of issuers tied economically to emerging countries. The economies of emerging countries often depend &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;predominantly on only a few industries or commodities and often are more volatile than the economies of developed countries.&lt;/span&gt;</oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="S000005487_MarketRiskFixedIncomeRiskMember"
      id="x_708ce7ae-42ae-4f62-b7a5-08b60ef8cbaf">&lt;span style="color:#000000;font-family:Times New Roman;font-size:8pt;"&gt;&#x25cf;&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-style:italic;"&gt;Market Risk &#x2013; Fixed Income&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; &#x2013; The market price of a fixed income investment can decline due to market-related factors, including rising interest or inflation rates and widening credit spreads, or decreased liquidity due, for example, to market uncertainty about the value of a fixed income investment (or class of fixed income investments).&lt;/span&gt;</oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="S000005487_DerivativesandShortSalesRiskMember"
      id="x_6f6af67e-8700-4feb-ac1a-b67481cf939e">&lt;span style="color:#000000;font-family:Times New Roman;font-size:8pt;"&gt;&#x25cf;&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-style:italic;"&gt;Derivatives and Short Sales Risk&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; &#x2013; The use of derivatives involves the risk that their value may not change as expected relative to changes in the value of the underlying assets, pools of assets, rates, currencies or indices. Derivatives also present other risks, including market risk, illiquidity risk, currency risk, credit risk, leveraging risk, commodities risk and counterparty risk. The market price of an option is affected by many factors, including changes in the market prices or dividend rates of underlying securities (or in the case of indices, the securities in such indices); the time remaining before expiration; changes in interest rates or exchange rates; and changes in the actual or perceived volatility of the relevant index or underlying securities. The Fund typically creates short investment exposure by selling securities short or by taking a derivative position in which the value of the derivative moves in the opposite direction from the price of an underlying asset, pool of assets, rate, currency or index. Specifically, the net asset value of the Fund&#x2019;s shares will be adversely affected if the securities or other assets that are the subject of the Fund&#x2019;s short exposures appreciate in value. The risk of loss associated with derivatives that provide short investment exposure and short sales of securities is theoretically unlimited.&lt;/span&gt;</oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="S000005487_FuturesContractsRiskMember"
      id="x_3f1eca06-c8d9-46e6-8d8f-d766d569585a">&lt;span style="color:#000000;font-family:Times New Roman;font-size:8pt;"&gt;&#x25cf;&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-style:italic;"&gt;Futures Contracts Risk&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; &#x2013; The loss to the Fund resulting from its use of futures contracts is potentially unlimited. Futures markets are highly volatile, and the use of futures contracts increases the volatility of the Fund&#x2019;s net asset value. A liquid market may not exist for any particular futures contract at any particular time, and the Fund may be unable when it wishes to terminate its exposure under that contract. When the Fund uses futures contracts for hedging purposes, it runs the risk that changes in the prices of the contracts will not correlate perfectly with changes in the securities, index, or other asset underlying the contracts or movements in the prices of the Fund&#x2019;s investments that are subject to the hedge. In addition, the Fund may be unable to recover or may be delayed in recovering margin or other amounts deposited with a futures commission merchant or futures clearinghouse. Foreign futures contracts are often less liquid and more volatile than U.S. futures contracts.&lt;/span&gt;</oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="S000005487_CreditRiskMember"
      id="x_6108a25a-82c4-4693-918e-ea6ca510e1ed">&lt;span style="color:#000000;font-family:Times New Roman;font-size:8pt;"&gt;&#x25cf;&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-style:italic;"&gt;Credit Risk&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; &#x2013; The Fund runs the risk that the issuer or guarantor of a fixed income investment (including a sovereign or quasi-sovereign debt issuer) or the obligor of an obligation underlying an asset-backed security will be unable or unwilling to satisfy its obligation to pay principal and interest or otherwise to honor its obligations in a timely manner or at all. The market price of a fixed income investment will normally decline as a result of the failure of an issuer, guarantor, or obligor to meet its payment obligations or in anticipation of such a failure. Below investment grade investments (commonly referred to as high yield or &#x201c;junk&#x201d; bonds) have speculative characteristics and are subject to greater credit risk than other fixed income investments. Negative changes in economic conditions or other circumstances are more likely to impair the ability of issuers of below investment grade investments to make principal and interest payments than issuers of investment grade investments.&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; In addition, investments in emerging country sovereign &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;or quasi-sovereign debt are subject to a heightened risk that the issuer responsible for repayment of the debt may be unable or unwilling to pay interest and repay principal when due, and the Fund may lack recourse against the issuer in the event of a default. Investments in quasi-sovereign debt also are subject to the risk that the issuer will default independently of its sovereign.&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;Investments in distressed or defaulted or other low quality debt investments generally are considered speculative and are subject to substantial risks not normally associated with investments in higher quality securities, including adverse business, financial or economic conditions that lead to their issuers&#x2019; payment defaults and insolvency proceedings. In particular, distressed or defaulted obligations might be repaid, if at all, only after lengthy workout or bankruptcy proceedings during which the issuer might not make any interest or other payments, and the Fund may incur additional expenses in its effort to be repaid. If GMO&#x2019;s assessment of the eventual recovery value of a distressed or defaulted debt investment proves incorrect, the Fund may lose a substantial portion or all of its original investment or may be required to accept cash or instruments worth less than its original investment.&lt;/span&gt;</oef:RiskTextBlock>
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      contextRef="S000005487_CurrencyRiskMember"
      id="a7bf2f1e-690e-4c7c-89b6-741aa5d35672">&lt;span style="color:#000000;font-family:Times New Roman;font-size:8pt;"&gt;&#x25cf;&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-style:italic;"&gt;Currency Risk&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; &#x2013; Fluctuations in exchange rates can adversely affect the market value of the Fund&#x2019;s foreign currency holdings and investments denominated in foreign currencies.&lt;/span&gt;</oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="S000005487_FundofFundsRiskMember"
      id="x_96505543-61da-41dc-95a9-cd5537fba27c">&lt;span style="color:#000000;font-family:Times New Roman;font-size:8pt;"&gt;&#x25cf;&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-style:italic;"&gt;Fund of Funds Risk&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; &#x2013; The Fund is indirectly exposed to all of the risks of an investment in the underlying funds in which it invests, including the risk that those underlying funds will not perform as expected. The fees and expenses associated with an investment in the Fund are less predictable than those associated with an investment in funds that charge a fixed management fee.&lt;/span&gt;</oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="S000005487_CommoditiesRiskMember"
      id="b0e4696d-8326-465a-b8ed-7302b77a4d5b">&lt;span style="color:#000000;font-family:Times New Roman;font-size:8pt;"&gt;&#x25cf;&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-style:italic;"&gt;Commodities Risk&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; &#x2013; Commodity prices can be extremely volatile, and exposure to commodities can cause the net asset value of the Fund&#x2019;s shares to decline or fluctuate significantly&#160;in a rapid and unpredictable manner.&lt;/span&gt;</oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="S000005487_IlliquidityRiskMember"
      id="x_2ac7f9b6-4e1b-4c0e-82a0-91dc29f86a78">&lt;span style="color:#000000;font-family:Times New Roman;font-size:8pt;"&gt;&#x25cf;&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-style:italic;"&gt;Illiquidity Risk&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; &#x2013; Low trading volume, lack of a market maker, large position size, or legal restrictions increase the risk that the Fund or an underlying fund is limited or prevented from selling particular securities or closing derivative positions at desirable prices at a particular time or at all.&lt;/span&gt;</oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="S000005487_LeveragingRiskMember"
      id="x_4229a874-16f0-4397-b9bd-788ecdc1ad1c">&lt;span style="color:#000000;font-family:Times New Roman;font-size:8pt;"&gt;&#x25cf;&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-style:italic;"&gt;Leveraging Risk&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; &#x2013; The use of derivatives, short sales and securities lending can create leverage. Leverage increases the Fund&#x2019;s losses when the value of its investments (including derivatives) declines. In addition, the Fund&#x2019;s portfolio will be leveraged if it exercises its right to delay payment on a redemption and the value of the Fund&#x2019;s assets declines between the time a redemption request is treated as being received by the Fund and the time the Fund liquidates assets to fund that redemption.&lt;/span&gt;</oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="S000005487_CounterpartyRiskMember"
      id="d238605f-a44e-41af-af4e-4583326ebffb">&lt;span style="color:#000000;font-family:Times New Roman;font-size:8pt;"&gt;&#x25cf;&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-style:italic;"&gt;Counterparty Risk&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; &#x2013; The Fund runs the risk that the counterparty to a derivatives contract or a clearing member used by the Fund to hold a cleared derivatives contract is unable or unwilling to make timely settlement payments, return the Fund&#x2019;s collateral or otherwise honor its obligations.&lt;/span&gt;</oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="S000005487_SmallerCompanyRiskMember"
      id="x_25690146-00c2-4f5f-8514-a28916b38fa7">&lt;span style="color:#000000;font-family:Times New Roman;font-size:8pt;"&gt;&#x25cf;&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-style:italic;"&gt;Smaller Company Risk&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; &#x2013; Smaller companies may have limited product lines, markets, or financial resources, lack the competitive strength of larger companies, have less experienced managers or depend on a few key employees. The securities of companies with smaller market capitalizations often are less widely held and trade less frequently and in lesser quantities, and their market prices often fluctuate more, than the securities of companies with larger market capitalizations.&lt;/span&gt;</oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="S000005487_MarketDisruptionandGeopoliticalRiskMember"
      id="x_101f6f39-6ef0-4df5-b10f-2edcf6056e1e">&lt;span style="color:#000000;font-family:Times New Roman;font-size:8pt;"&gt;&#x25cf;&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-style:italic;"&gt;Market Disruption and Geopolitical Risk&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; &#x2013; Geopolitical and other events (e.g., wars, pandemics, sanctions, terrorism, diplomatic tensions, dramatic changes in regulatory and/or foreign policy, cyberattacks, and rapid technological developments such as artificial intelligence) often disrupt securities markets and adversely affect the general economy or particular economies and markets. Those events, as well as other changes in non-U.S. and U.S. economic and political conditions, could exacerbate other risks or otherwise reduce the value of the Fund&#x2019;s investments.&lt;/span&gt;</oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="S000005487_MarketRiskAssetBackedSecuritiesRiskMember"
      id="x_000a2a1f-6350-4086-8f4e-aecb28610016">&lt;span style="color:#000000;font-family:Times New Roman;font-size:8pt;"&gt;&#x25cf;&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-style:italic;"&gt;Market Risk &#x2013; Asset-Backed Securities&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; &#x2013; The market price of asset-backed securities, like that of other fixed income investments, can decline for a variety of reasons, including increases in interest rates. In addition, the market price can decrease due to a reduction in or decrease in the reliability of their payment streams. Payment streams associated with asset-backed securities held by the Fund depend on many factors (e.g., the cash flow generated by the assets backing the securities, deal structure, and creditworthiness of any credit-support provider), and a problem in any of these factors can lead to a reduction in the payment stream GMO expected the Fund to receive when the Fund purchased the asset-backed security. The liquidity of asset-backed securities (particularly below investment grade asset-backed securities) may change over time. During periods of deteriorating economic conditions, such as recessions, or periods of rising unemployment, delinquencies and losses generally increase, sometimes dramatically, for asset-backed securities whose underlying assets consist of loans, sales contracts, receivables and other obligations.&lt;/span&gt;</oef:RiskTextBlock>
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      contextRef="S000005487_FocusedInvestmentRiskMember"
      id="e5ca313b-5b47-4470-8fb8-1003ea2dc761">&lt;span style="color:#000000;font-family:Times New Roman;font-size:8pt;"&gt;&#x25cf;&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-style:italic;"&gt;Focused Investment Risk&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; &#x2013; Investments in countries, regions, asset classes, sectors, industries, currencies, or issuers that are subject to the same or similar risk factors and investments whose market prices are closely correlated are subject to higher overall risk than investments that are more diversified or whose market prices are not as closely correlated.&lt;/span&gt;</oef:RiskTextBlock>
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      contextRef="S000005487_LargeTransactionsRiskMember"
      id="x_2775a141-a672-4830-bd33-3ce368f20e4f">&lt;span style="color:#000000;font-family:Times New Roman;font-size:8pt;"&gt;&#x25cf;&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-style:italic;"&gt;Large Transactions Risk&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; &#x2013; To the extent that a large number of shares of the Fund is held by a single shareholder (e.g., an institutional investor or another GMO Fund) or a group of shareholders with a common investment strategy (e.g., GMO asset allocation accounts), the Fund is subject to the risk that a redemption by (or caused by) that shareholder or group will require the Fund to sell investments at disadvantageous prices, disrupt the Fund&#x2019;s operations, lead to temporary overexposure to the Fund&#x2019;s intended investment program or force the Fund&#x2019;s liquidation. The Fund also may be subject to these effects when a number of shareholders collectively redeem or sell a large amount of Fund shares.&lt;/span&gt;</oef:RiskTextBlock>
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      contextRef="S000005487_ValueInvestingRiskMember"
      id="f0f990a2-80aa-48bb-8b47-6c8ac052589d">&lt;span style="color:#000000;font-family:Times New Roman;font-size:8pt;"&gt;&#x25cf;&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-style:italic;"&gt;Value Investing Risk&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; &#x2013; Issuers whose securities GMO believes are undervalued may not realize their business potential, may never be recognized by the market as being undervalued and/or may be appropriately priced notwithstanding GMO&#x2019;s assessment. These and other factors may cause the price of value stocks to decline, resulting in losses to the Fund.&lt;/span&gt;</oef:RiskTextBlock>
    <oef:BarChartAndPerformanceTableHeading
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      id="x_484b0ea3-db5c-46fe-911c-65ec4e072352">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-weight:bold;"&gt;Performance&lt;/span&gt;</oef:BarChartAndPerformanceTableHeading>
    <oef:PerformanceNarrativeTextBlock
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      id="x_270f9102-c824-4b53-89e6-08289bf1879d">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;margin-left:3.76%;"&gt;The bar chart and table below provide some indication of the risks of investing in the Fund by showing changes in the Fund&#x2019;s &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;annual total returns from year to year for the periods indicated and by comparing the Fund&#x2019;s average annual total returns for different calendar periods with those of the Fund's benchmark (a composite index computed by GMO) and two broad-based securities market indices.&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; Share classes not shown would have substantially similar annual returns to those below because all share classes invest in the &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;same portfolio of securities. Annual returns vary among share classes to the extent that they bear different expenses. Share classes that bear higher expenses than the share classes shown below would have lower returns. &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;After-tax returns are calculated using the historical &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;highest individual federal marginal income tax rates and do not reflect the impact of state and local taxes. &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;Actual after-tax returns &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;depend on your tax situation and may differ from those shown. After-tax returns shown are not relevant if you are tax-exempt or if you hold your Fund shares through tax-advantaged arrangements (such as a 401(k) plan or individual retirement account). &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;After-tax returns &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;are shown for Class III shares only; after-tax returns for other classes will vary.&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; Updated performance information for the Fund is &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;available at &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;www.gmo.com&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;. &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;Past performance (before and after taxes) is not an indication of future performance.&lt;/span&gt;</oef:PerformanceNarrativeTextBlock>
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      contextRef="S000005487"
      id="x_37e22bdc-29f0-4824-925a-a3d01c9742d1">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;margin-left:3.76%;"&gt;The bar chart and table below provide some indication of the risks of investing in the Fund by showing changes in the Fund&#x2019;s &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;annual total returns from year to year for the periods indicated and by comparing the Fund&#x2019;s average annual total returns for different calendar periods with those of the Fund's benchmark (a composite index computed by GMO) and two broad-based securities market indices.&lt;/span&gt;</oef:PerformanceInformationIllustratesVariabilityOfReturns>
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      id="fd83cbbc-8e8c-4733-b6a9-fab7eaee3683">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;After-tax returns are calculated using the historical &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;highest individual federal marginal income tax rates and do not reflect the impact of state and local taxes. &lt;/span&gt;</oef:PerformanceTableUsesHighestFederalRate>
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      id="x_3214a9b9-9fcb-4441-8996-141943431402">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;Actual after-tax returns &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;depend on your tax situation and may differ from those shown. After-tax returns shown are not relevant if you are tax-exempt or if you hold your Fund shares through tax-advantaged arrangements (such as a 401(k) plan or individual retirement account). &lt;/span&gt;</oef:PerformanceTableNotRelevantToTaxDeferred>
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      id="x_0f49f717-0f4f-474d-ba9f-d3366df60a1b">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;After-tax returns &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;are shown for Class III shares only; after-tax returns for other classes will vary.&lt;/span&gt;</oef:PerformanceTableOneClassOfAfterTaxShown>
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      id="a5f325bb-55a3-4a56-a26a-c0824e803b99">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;www.gmo.com&lt;/span&gt;</oef:PerformanceAvailabilityWebSiteAddress>
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      id="x_6af993a1-7cf8-457d-ae02-12cf89d2e445">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;Past performance (before and after taxes) is not an indication of future performance.&lt;/span&gt;</oef:PerformancePastDoesNotIndicateFuture>
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      id="x_003d7e50-9ffa-4e00-b542-762022ea7e8d">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-weight:bold;"&gt;Annual Total Returns/Class III Shares&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:6.5pt;font-weight:bold;position:relative;top:-2.75pt;"&gt;1&lt;/span&gt; &lt;br/&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;Years Ending December 31&lt;/span&gt;</oef:BarChartHeading>
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      id="ca8b25ff-9b3c-4cec-9c6d-c8bf58bbac9d">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;Highest Quarter:&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;11.55%&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;-sec-ix-hidden:ef0ece92-e29e-4145-98a3-8dc742b26237"&gt;2Q 2020&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;Lowest Quarter:&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;-16.75%&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;-sec-ix-hidden:a5ef742f-85a7-4a68-9042-553320629953"&gt;1Q 2020&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;Year-to-Date:&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;3.35%&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;As of&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;3/31/2025&lt;/span&gt;</oef:BarChartClosingTextBlock>
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      id="x_42dd13b3-6442-48b2-84fc-7835c12feb70">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;Highest Quarter:&lt;/span&gt;</oef:HighestQuarterlyReturnLabel>
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      id="c5419e06-ef4e-47c2-b927-ecd33a99fb9e"
      unitRef="pure">0.1155</oef:BarChartHighestQuarterlyReturn>
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      id="dc52d9ec-56b7-4525-b255-1472d7d6a6d1">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;Lowest Quarter:&lt;/span&gt;</oef:LowestQuarterlyReturnLabel>
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      unitRef="pure">-0.1675</oef:BarChartLowestQuarterlyReturn>
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      id="x_4e8bc3be-87b0-4574-b2c0-b25377805fc4">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;Year-to-Date:&lt;/span&gt;</oef:YearToDateReturnLabel>
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      contextRef="S000005487_C000213376"
      id="x_9de89897-c0ed-4a00-ab1e-599537068e36">2025-03-31</oef:BarChartYearToDateReturnDate>
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      id="aeac70f3-1f2b-4b4e-be3c-093524ad3548">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-weight:bold;"&gt;Average Annual Total Returns&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:6.5pt;font-weight:bold;position:relative;top:-2.75pt;"&gt;1,2&lt;/span&gt; &lt;br/&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;Periods Ending December 31, 2024&lt;/span&gt;</oef:PerformanceTableHeading>
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      id="d2fbd058-0cce-4075-8de6-b3bd29a03baa">1996-06-28</oef:PerfInceptionDate>
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    <oef:IndexNoDeductionForFeesExpensesTaxes
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      id="a12ba278-5a17-487c-8bc1-8e41c883c06b">&lt;span style="color:#000000;font-family:Times New Roman;font-size:7.9pt;margin-left:0.0pt;"&gt;(returns reflect no &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:7.9pt;margin-left:7.9pt;"&gt;deduction for fees or expenses, &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:7.9pt;margin-left:7.9pt;"&gt;but are net of withholding tax on &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:7.9pt;margin-left:7.9pt;"&gt;dividend reinvestments)&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:7.9pt;margin-left:0.0pt;"&gt;(returns reflect no &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:7.9pt;margin-left:7.9pt;"&gt;deduction for fees or expenses, &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:7.9pt;margin-left:7.9pt;"&gt;but are net of withholding tax on &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:7.9pt;margin-left:7.9pt;"&gt;dividend reinvestments)&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:7.9pt;margin-left:0.0pt;"&gt;(returns reflect no &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:7.9pt;margin-left:7.9pt;"&gt;deduction for fees or expenses, &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:7.9pt;margin-left:7.9pt;"&gt;but are net of withholding tax on &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:7.9pt;margin-left:7.9pt;"&gt;dividend reinvestments)&lt;/span&gt;</oef:IndexNoDeductionForFeesExpensesTaxes>
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      id="x_00a9edb1-fe83-4e75-969c-ba5cdf507869">2019-09-30</oef:PerfInceptionDate>
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      id="x_07c2955c-ef85-45d5-890e-d6c0e61109ac"
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      contextRef="C000213377"
      id="x_4e72f7ed-b328-4d81-a66f-bf4a906055d3">2021-01-06</oef:PerfInceptionDate>
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      unitRef="pure">0.0498</oef:AvgAnnlRtrPct>
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      unitRef="pure">0.0284</oef:AvgAnnlRtrPct>
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      decimals="4"
      id="x_3b793dee-851a-49ec-b35e-546e440ac9b1"
      unitRef="pure">0.1160</oef:AvgAnnlRtrPct>
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      decimals="4"
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      unitRef="pure">0.0482</oef:AvgAnnlRtrPct>
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      id="x_2570a894-4247-431e-8c40-32d8c3d16a37"
      unitRef="pure">0.1749</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
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      decimals="4"
      id="x_13977c45-2fd9-49bf-a12c-2c9cef1178bb"
      unitRef="pure">0.0845</oef:AvgAnnlRtrPct>
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      unitRef="pure">0.0125</oef:AvgAnnlRtrPct>
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      decimals="4"
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    <oef:ObjectiveHeading
      contextRef="S000056707"
      id="a6945c21-ce53-44e0-aa8d-efcec20a7b0d">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-weight:bold;"&gt;Investment objective&lt;/span&gt;</oef:ObjectiveHeading>
    <oef:ObjectivePrimaryTextBlock
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      id="x_45d32d7b-876f-4520-a076-de2634292a28">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;High total return.&lt;/span&gt;</oef:ObjectivePrimaryTextBlock>
    <oef:ExpenseHeading
      contextRef="S000056707"
      id="d64b01e0-819c-4fbb-a30f-d56d57ff1b32">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-weight:bold;"&gt;Fees and expenses&lt;/span&gt;</oef:ExpenseHeading>
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      contextRef="S000056707"
      id="x_2e3b3dd7-9da7-48b3-ad89-eaa815e6b22b">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;margin-left:3.76%;"&gt;The table below describes the fees and expenses that you may bear for each class of shares if you buy, hold, and sell shares of the &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;Fund. You may pay other fees, such as brokerage commissions and other fees to financial intermediaries, which are not reflected in the table and example below.&lt;/span&gt;</oef:ExpenseNarrativeTextBlock>
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      id="x_963354ef-f814-47e9-9d28-4c9ffb144be7">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-weight:bold;"&gt;Annual Fund operating expenses &lt;/span&gt; &lt;br/&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;(expenses that you bear each year as a percentage of the value of your investment)&lt;/span&gt;</oef:OperatingExpensesCaption>
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      decimals="4"
      id="f3cdb641-84b1-4fe7-836d-3f33988d0dc7"
      unitRef="pure">0.0075</oef:ManagementFeesOverAssets>
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      decimals="4"
      id="x_6daf0091-b3a8-4f5f-bcc7-df6b8b1b28ae"
      unitRef="pure">0.0070</oef:ManagementFeesOverAssets>
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      contextRef="S000056707_C000179797"
      decimals="5"
      id="x_7c46d86b-857e-4021-b80a-afd724fbe276"
      unitRef="pure">0.00685</oef:ManagementFeesOverAssets>
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      contextRef="S000056707_C000179798"
      decimals="5"
      id="fe043ce2-07da-4f7c-95e5-a3c18757df92"
      unitRef="pure">0.00655</oef:ManagementFeesOverAssets>
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      contextRef="S000056707_C000213399"
      decimals="4"
      id="x_2f285864-4ff4-493d-a61c-bc7b03b28149"
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      contextRef="S000056707_C000213398"
      decimals="4"
      id="becf0f9c-1788-4e5e-9ecf-5d2d20cb0bf2"
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      decimals="4"
      id="x_8f9ec78a-84dd-4f48-90d1-1a59ed06520f"
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      decimals="4"
      id="x_44cdc286-f09a-471a-8d01-ec7b8b4ecec2"
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      contextRef="S000056707_C000179797"
      decimals="4"
      id="x_5be18851-4773-4b52-b68c-2e9c1605cf64"
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      contextRef="S000056707_C000179798"
      decimals="4"
      id="x_615fbe8c-7e72-476a-a0d1-673db17e5ef0"
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      decimals="4"
      id="x_2a8d1f9e-e75e-4d00-9950-d5d3db6c47ed"
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      contextRef="S000056707_C000213398"
      decimals="4"
      id="bcfa55f2-5687-424b-8077-becd7d17aa4c"
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    <oef:ExpensesOverAssets
      contextRef="S000056707_C000179795"
      decimals="4"
      id="x_7087712a-bd7b-40d4-beb2-dfd6aaa25f03"
      unitRef="pure">0.0083</oef:ExpensesOverAssets>
    <oef:ExpensesOverAssets
      contextRef="S000056707_C000179796"
      decimals="4"
      id="x_2a5ad3af-6634-42b9-a51b-aea52384a92a"
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    <oef:ExpensesOverAssets
      contextRef="S000056707_C000179797"
      decimals="4"
      id="x_8646d335-3255-418b-9ad8-43e12e1f5fa8"
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      contextRef="S000056707_C000179798"
      decimals="4"
      id="x_173956d3-ecfc-4988-a4f2-fc8efa960fda"
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      contextRef="S000056707_C000213399"
      decimals="4"
      id="x_63f092e1-d587-431e-b74c-f529777f18cd"
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    <oef:ExpensesOverAssets
      contextRef="S000056707_C000213398"
      decimals="4"
      id="x_5cfa3046-21ba-49d2-bf90-d271ebff1470"
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    <oef:FeeWaiverOrReimbursementOverAssets
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      decimals="4"
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      id="x_8989884e-e782-420b-8392-8eb84bd398ca"
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    <oef:FeeWaiverOrReimbursementOverAssets
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      decimals="4"
      id="b03fa475-770e-42f7-8530-72e008a3904d"
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      contextRef="S000056707_C000179798"
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      id="x_82a10334-717c-4dd9-bf11-078d1bd13cea"
      unitRef="pure">-0.0005</oef:FeeWaiverOrReimbursementOverAssets>
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      contextRef="S000056707_C000213399"
      decimals="4"
      id="x_5314f8c1-1387-4778-97b5-9d719eac34f7"
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    <oef:FeeWaiverOrReimbursementOverAssets
      contextRef="S000056707_C000213398"
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    <oef:NetExpensesOverAssets
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      decimals="4"
      id="ddcc31f0-8c43-4f28-9632-9782657b6fd2"
      unitRef="pure">0.0078</oef:NetExpensesOverAssets>
    <oef:NetExpensesOverAssets
      contextRef="S000056707_C000179796"
      decimals="4"
      id="x_1a1ec7d8-3e1e-4e7a-9ba7-3c6e9a8a9e53"
      unitRef="pure">0.0073</oef:NetExpensesOverAssets>
    <oef:NetExpensesOverAssets
      contextRef="S000056707_C000179797"
      decimals="4"
      id="x_4ce73bbd-00b1-4919-a9f3-e906a35f3d4a"
      unitRef="pure">0.0072</oef:NetExpensesOverAssets>
    <oef:NetExpensesOverAssets
      contextRef="S000056707_C000179798"
      decimals="4"
      id="x_44176249-dd26-43fc-8822-c94d8f579c1e"
      unitRef="pure">0.0069</oef:NetExpensesOverAssets>
    <oef:NetExpensesOverAssets
      contextRef="S000056707_C000213399"
      decimals="4"
      id="x_66cae6dc-65b6-47ac-9f2f-61ffeb4f79d2"
      unitRef="pure">0.0078</oef:NetExpensesOverAssets>
    <oef:NetExpensesOverAssets
      contextRef="S000056707_C000213398"
      decimals="4"
      id="x_870225b7-015c-4503-84c8-27afd65284b0"
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    <oef:FeeWaiverOrReimbursementOverAssetsDateOfTermination
      contextRef="S000056707"
      id="b9e59034-9812-4530-80cd-1f12ed95a285">&lt;span style="color:#000000;font-family:Times New Roman;font-size:8pt;font-style:italic;"&gt;June 30, 2026&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:8pt;font-style:italic;"&gt;June 30, 2026&lt;/span&gt;</oef:FeeWaiverOrReimbursementOverAssetsDateOfTermination>
    <oef:ExpenseExampleHeading
      contextRef="S000056707"
      id="eb301d1e-0e73-4ce6-b4f9-869a939b926b">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-weight:bold;"&gt;Example&lt;/span&gt;</oef:ExpenseExampleHeading>
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      contextRef="S000056707"
      id="x_7e0d9289-175a-4e3d-98f8-97929ded1b6f">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;margin-left:3.76%;"&gt;This example is intended to help you compare the cost of investing in the Fund with the cost of investing in other funds. The &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;example assumes that you invest $10,000 in the Fund for the time periods indicated, regardless of whether or not you redeem your shares at the end of such periods. The example also assumes that your investment has a 5% return each year and that the Fund&#x2019;s operating expenses remain the same as those shown in the table. The one year amounts shown reflect the expense reimbursement and waiver noted in the expense table. Although your actual costs may be higher or lower, based on these assumptions your costs would be:&lt;/span&gt;</oef:ExpenseExampleNarrativeTextBlock>
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      decimals="INF"
      id="x_0a91dabb-524e-427b-b60a-23421a3086c7"
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      contextRef="S000056707_C000179795"
      decimals="INF"
      id="x_95ac65df-e578-4127-8427-4351ce9f3508"
      unitRef="USD">260</oef:ExpenseExampleYear03>
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      decimals="INF"
      id="bdc42386-f94e-4a45-90fd-5d69bd52e96f"
      unitRef="USD">456</oef:ExpenseExampleYear05>
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      decimals="INF"
      id="x_2c88a3d6-eb68-4f7a-a36c-acbca47e151b"
      unitRef="USD">1021</oef:ExpenseExampleYear10>
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      contextRef="S000056707_C000179796"
      decimals="INF"
      id="x_0d1674ca-cb46-4e66-9618-e7f1e0dbc5f1"
      unitRef="USD">75</oef:ExpenseExampleYear01>
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      contextRef="S000056707_C000179796"
      decimals="INF"
      id="x_4259b0a8-1680-4922-a658-ffde763b9162"
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      contextRef="S000056707_C000179796"
      decimals="INF"
      id="x_543e2d14-584b-4959-8765-451097662bcd"
      unitRef="USD">428</oef:ExpenseExampleYear05>
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      contextRef="S000056707_C000179796"
      decimals="INF"
      id="x_7fa952d8-f588-46bc-a1f0-37b19580d083"
      unitRef="USD">961</oef:ExpenseExampleYear10>
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      contextRef="S000056707_C000179797"
      decimals="INF"
      id="x_9bd92265-fb63-4838-8674-7c4b12d57106"
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      decimals="INF"
      id="x_058c585f-4680-496e-afec-b22a51e491ee"
      unitRef="USD">241</oef:ExpenseExampleYear03>
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      contextRef="S000056707_C000179797"
      decimals="INF"
      id="x_1e1f33fa-315e-4db1-92f8-64eef6bd0d33"
      unitRef="USD">423</oef:ExpenseExampleYear05>
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      contextRef="S000056707_C000179797"
      decimals="INF"
      id="x_75b1141e-c72e-4329-92ff-eb076ca4b38a"
      unitRef="USD">949</oef:ExpenseExampleYear10>
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      decimals="INF"
      id="x_2f83882f-5dcd-478f-8d9a-4304c1d4819e"
      unitRef="USD">70</oef:ExpenseExampleYear01>
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      decimals="INF"
      id="x_2ace742a-8ad1-43f9-ab8a-d9de89b8a680"
      unitRef="USD">232</oef:ExpenseExampleYear03>
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      contextRef="S000056707_C000179798"
      decimals="INF"
      id="x_78cf89a6-9939-4c35-8ad2-755edafbf52e"
      unitRef="USD">407</oef:ExpenseExampleYear05>
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      decimals="INF"
      id="x_009e3e66-3e12-4e58-b0d4-eb58f2d4671b"
      unitRef="USD">914</oef:ExpenseExampleYear10>
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      contextRef="S000056707_C000213399"
      decimals="INF"
      id="x_057327b1-d29a-45b5-af7c-34fbbae2424e"
      unitRef="USD">80</oef:ExpenseExampleYear01>
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      contextRef="S000056707_C000213399"
      decimals="INF"
      id="x_550aa618-0bd2-421f-80e6-2802736fafbe"
      unitRef="USD">260</oef:ExpenseExampleYear03>
    <oef:ExpenseExampleYear05
      contextRef="S000056707_C000213399"
      decimals="INF"
      id="d8e6c9bc-16b6-4032-8716-e4dfc9347650"
      unitRef="USD">456</oef:ExpenseExampleYear05>
    <oef:ExpenseExampleYear10
      contextRef="S000056707_C000213399"
      decimals="INF"
      id="x_9c996aae-e9df-4387-85a8-235d8763a5e5"
      unitRef="USD">1021</oef:ExpenseExampleYear10>
    <oef:ExpenseExampleYear01
      contextRef="S000056707_C000213398"
      decimals="INF"
      id="x_41b2c24f-06e3-4fac-9698-92bf80e3eadd"
      unitRef="USD">90</oef:ExpenseExampleYear01>
    <oef:ExpenseExampleYear03
      contextRef="S000056707_C000213398"
      decimals="INF"
      id="x_95a657d8-70b5-4d7d-8eff-0596afc35f9d"
      unitRef="USD">291</oef:ExpenseExampleYear03>
    <oef:ExpenseExampleYear05
      contextRef="S000056707_C000213398"
      decimals="INF"
      id="efcfb542-3c68-4c08-ba03-bf1f473526fb"
      unitRef="USD">510</oef:ExpenseExampleYear05>
    <oef:ExpenseExampleYear10
      contextRef="S000056707_C000213398"
      decimals="INF"
      id="x_446a0dfc-4565-49ba-9da9-f4ca19c4f958"
      unitRef="USD">1138</oef:ExpenseExampleYear10>
    <oef:PortfolioTurnoverHeading
      contextRef="S000056707"
      id="x_775bde79-081f-418a-b86c-d9a3f9642706">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-weight:bold;"&gt;Portfolio turnover&lt;/span&gt;</oef:PortfolioTurnoverHeading>
    <oef:PortfolioTurnoverTextBlock
      contextRef="S000056707"
      id="c1e19aec-32cd-4df3-8a02-4a5bf4723bee">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;margin-left:3.76%;"&gt;The Fund pays transaction costs, such as commissions, when it buys and sells securities. A higher portfolio turnover rate may &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;result in higher transaction costs and, for holders of Fund shares subject to U.S. taxes, higher income taxes. These transaction costs, which are not reflected in Annual Fund operating expenses or in the Example, affect the Fund&#x2019;s performance.&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; During its fiscal year &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;ended February 28, 2025, the Fund&#x2019;s portfolio turnover rate (excluding short-term investments) was &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;104&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;% of the average value of its portfolio securities.&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; That portfolio turnover rate includes investments in U.S. Treasury Fund, which the Fund uses as a short-term &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;margin-left:0%;"&gt;investment vehicle for cash management. The Fund&#x2019;s portfolio turnover rate during its fiscal year ended February 28, 2025, excluding &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;transactions in U.S. Treasury Fund and other short-term investments, was 57% of the average value of its portfolio securities.&lt;/span&gt;</oef:PortfolioTurnoverTextBlock>
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      decimals="4"
      id="f25a0a72-cc35-465d-b0f6-fd7ab6de5570"
      unitRef="pure">1.04</oef:PortfolioTurnoverRate>
    <oef:StrategyHeading
      contextRef="S000056707"
      id="x_7334841a-1590-45ab-83a8-0a544bb0a458">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-weight:bold;"&gt;Principal investment strategies&lt;/span&gt;</oef:StrategyHeading>
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      id="ebd20464-5dd1-4294-b8d1-69aed9fd84da">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;margin-left:3.76%;"&gt;GMO seeks to achieve the Fund&#x2019;s investment objective by investing the Fund&#x2019;s assets primarily in equities of companies GMO &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;believes are positioned to benefit, directly or indirectly, from efforts to curb or mitigate the long-term effects of global climate change, to address the environmental challenges presented by global climate change, or to improve the efficiency of resource consumption. Due to the far-reaching effects of, and evolving innovation related to, climate change, GMO expects such companies to be involved in a wide array of businesses.&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;margin-left:3.76%;"&gt;GMO selects the securities the Fund buys and sells based on its evaluation of companies&#x2019; published financial information and &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;corporate behavior (such as profit warnings, share issuance or repurchase, and director dealings in company stock), securities&#x2019; prices, commodities&#x2019; prices, equity and bond markets, the overall global economy, and governmental policies. GMO also may consider ESG (environmental, social, and governance) criteria.&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;margin-left:3.76%;"&gt;In selecting securities for the Fund, GMO uses a combination of investment methods to identify securities GMO believes have &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;positive return potential. Some of these methods evaluate individual companies or groups of companies based on the ratio of their security price to historical financial information and forecasted financial information, such as profitability, cash flow and earnings, and a comparison of these ratios to current and historical averages. Other methods focus on patterns of information, such as price movement or volatility of a security or groups of securities. The Fund may invest its assets in securities of companies of any market capitalization and may invest a significant portion of its assets in securities of companies with smaller market capitalizations. The Fund has no limit on the amount it may invest in any single asset class, sector, country, industry, region or issuer. The factors GMO considers and investment methods GMO uses can change over time. GMO does not manage the Fund to, or control the Fund&#x2019;s risk relative to, any securities index or securities benchmark.&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;margin-left:3.76%;"&gt;The Fund has a fundamental policy to concentrate its investments in climate change-related industries, and under normal market &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;conditions, the Fund invests at least 80% of its assets in companies in such industries (see &#x201c;Name Policies&#x201d;). The Fund considers &#x201c;climate change-related industries&#x201d; to include clean energy, batteries and storage, electric grid, energy efficiency, recycling and pollution control, agriculture, water, and businesses that service such industries. The Fund is permitted to invest directly and indirectly in equities of companies tied economically to any country in the world, including emerging countries.&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;margin-left:3.76%;"&gt;As an alternative to investing directly in equities, the Fund may invest in exchange-traded and over-the-counter (OTC) derivatives &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;and exchange-traded funds (ETFs). The Fund also may invest in derivatives and ETFs in an attempt to obtain or adjust elements of its long or short investment exposure. Derivatives used may include futures, options, forward currency contracts, and swap contracts. In addition, the Fund may lend its portfolio securities.&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;margin-left:3.76%;"&gt;The Fund also may invest in U.S. Treasury Fund, in money market funds unaffiliated with GMO, and directly in the types of &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;investments typically held by money market funds.&lt;/span&gt;</oef:StrategyNarrativeTextBlock>
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      contextRef="S000056707_RiskLoseMoneyMember"
      id="bff3584a-a4ec-42f5-910d-5726a343127a">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;Many factors can affect this value, and you may lose money by investing in the Fund.&lt;/span&gt;</oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="S000056707_RiskNotInsuredDepositoryInstitutionMember"
      id="b7b95310-81e1-4f62-90a6-f75285c5b0df">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;An investment in the Fund is not a bank deposit and is not insured or guaranteed by the FDIC or &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;any government agency.&lt;/span&gt;</oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="S000056707_FocusedInvestmentRiskMember"
      id="x_88ba95c6-d802-4118-a6b7-a2db54473a4d">&lt;span style="color:#000000;font-family:Times New Roman;font-size:8pt;"&gt;&#x25cf;&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-style:italic;"&gt;Focused Investment Risk&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; &#x2212; Because the Fund focuses its investments in securities of companies involved in climate change-related industries, the Fund will be more susceptible to events or factors affecting these companies, and the market prices of its portfolio securities may be more volatile than those of mutual funds that are more diversified. The Fund is particularly exposed to such developments as changes in global and regional climates, environmental protection regulatory actions, changes in government standards and subsidy levels, changes in taxation and other domestic and international political, regulatory and economic developments (such as potential cutbacks on funding for the Environmental Protection Agency). Companies involved in alternative fuels also may be adversely affected by the increased use of, or decreases in prices for, oil or other fossil fuels. Such companies are often capital-intensive and use significant amounts of leverage, subjecting them to the risk of rising interest rates that could adversely affect their ability to repay debt issued to finance capital projects and/or to borrow or otherwise raise additional money to finance those projects. In addition, scientific developments, such as breakthroughs in the remediation of global warming, and changes in governmental policies relating to the effects of pollution may affect investments in pollution control, which could in turn affect these companies. Such companies also may be significantly affected by technological changes in industries focusing on energy, pollution control and mitigation of global warming. Because society&#x2019;s focus on climate change issues is relatively new, the emphasis and direction of governmental policies is subject to significant change, and rapid technological change could render even new approaches and products obsolete. Some companies involved in climate change-related industries have more limited operating &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;margin-left:0.00%;"&gt;histories and smaller market capitalizations on average than companies in other sectors. As a result of these and other factors, the market prices of securities of companies involved in climate change-related industries tend to be considerably more volatile than &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;those of companies in more established sectors and industries.&lt;/span&gt;</oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="S000056707_MarketRiskEquitiesRiskMember"
      id="a8f5eb04-a89d-4ade-b9c1-f3f9091aff98">&lt;span style="color:#000000;font-family:Times New Roman;font-size:8pt;"&gt;&#x25cf;&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-style:italic;"&gt;Market Risk &#x2013; Equities &#x2013; &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;The market price of an equity in the Fund&#x2019;s portfolio may decline due to factors affecting the issuer or its industry or the economy and equity markets generally. If the Fund purchases an equity for less than its fundamental fair (or intrinsic) value as assessed by GMO, the Fund runs the risk that the market price of the equity will not appreciate or will decline (for example, if GMO&#x2019;s assessment proves to be incorrect or the market fails to recognize the equity&#x2019;s intrinsic value). The Fund also may purchase equities that typically trade at higher multiples of current earnings than other securities, and the market prices of these equities often are more sensitive to changes in future earnings expectations and interest rates than the market prices of equities trading at lower multiples. Declines in stock market prices generally are likely to reduce the net asset value of the Fund&#x2019;s shares.&lt;/span&gt;</oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="S000056707_ManagementandOperationalRiskMember"
      id="x_57165237-9ee3-4644-9cf8-a54b44007654">&lt;span style="color:#000000;font-family:Times New Roman;font-size:8pt;"&gt;&#x25cf;&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-style:italic;"&gt;Management and Operational Risk&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; &#x2013; The Fund runs the risk that GMO&#x2019;s investment techniques will fail to produce intended results.&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;The Fund also runs the risk that GMO&#x2019;s assessment of an investment, including a security&#x2019;s fundamental fair (or intrinsic) value, is wrong or that deficiencies in GMO&#x2019;s or another service provider&#x2019;s internal systems or controls will cause losses for the Fund or impair Fund operations.&lt;/span&gt;</oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="S000056707_SmallerCompanyRiskMember"
      id="x_8402ccaa-6457-4de5-960b-fb3012680da5">&lt;span style="color:#000000;font-family:Times New Roman;font-size:8pt;"&gt;&#x25cf;&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-style:italic;"&gt;Smaller Company Risk&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; &#x2013; Smaller companies may have limited product lines, markets, or financial resources, lack the competitive strength of larger companies, have less experienced managers or depend on a few key employees. The securities of companies with smaller market capitalizations often are less widely held and trade less frequently and in lesser quantities, and their market prices often fluctuate more, than the securities of companies with larger market capitalizations.&lt;/span&gt;</oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="S000056707_NonUSInvestmentRiskMember"
      id="f5c34ccf-fb21-4f9d-9de0-bb0cc106e11c">&lt;span style="color:#000000;font-family:Times New Roman;font-size:8pt;"&gt;&#x25cf;&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-style:italic;"&gt;Non-U.S. Investment Risk&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; &#x2013; The market prices of many non-U.S. securities fluctuate more than those of U.S. securities. Many non-U.S. securities markets are less stable, smaller, less liquid, and less regulated than U.S. securities markets, and the cost of trading in those markets often is higher than in U.S. securities markets. In addition, non-U.S. securities issuers often are not subject to as much regulation as U.S. issuers, and the reporting, recordkeeping, accounting, custody, and auditing standards to which those issuers are subject often are not as rigorous as U.S. standards. In addition, the Fund is subject to taxation by countries other than the United States, including potentially on a retroactive basis, on (i) capital gains it realizes or dividends, interest, or other amounts it realizes or accrues in respect of non-U.S. investments; (ii) transactions in those investments; and (iii) repatriation of proceeds generated from the sale or other disposition of those investments.&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; Also, the Fund needs a license to invest directly in securities &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;traded in many non-U.S. securities markets, and the Fund is subject to the risk that its license is terminated or suspended. In some non-U.S. securities markets, prevailing custody and trade settlement practices (e.g., the requirement to pay for securities prior to receipt) expose the Fund to credit and other risks. Further, adverse changes in investment regulations, capital requirements or exchange controls could adversely affect the value of the Fund&#x2019;s investments. The risks above (such as substantial price fluctuations and market instability, illiquidity and lack of regulation) and other risks (e.g., nationalization, expropriation or other confiscation of assets of non-U.S. issuers, difficulties enforcing legal judgments or contractual rights and geopolitical risks) tend to be higher for investments in the securities of issuers tied economically to emerging countries. The economies of emerging countries often depend predominantly on only a few industries or commodities and often are more volatile than the economies of developed countries.&lt;/span&gt;</oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="S000056707_IlliquidityRiskMember"
      id="bbbf9239-583f-46dd-9c0d-6bedc6520dfa">&lt;span style="color:#000000;font-family:Times New Roman;font-size:8pt;"&gt;&#x25cf;&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-style:italic;"&gt;Illiquidity Risk&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; &#x2013; Low trading volume, lack of a market maker, large position size, or legal restrictions increase the risk that the Fund or an underlying fund is limited or prevented from selling particular securities or closing derivative positions at desirable prices at a particular time or at all.&lt;/span&gt;</oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="S000056707_MarketDisruptionandGeopoliticalRiskMember"
      id="x_56ee5b51-2041-4fd6-a97f-5696951bb69c">&lt;span style="color:#000000;font-family:Times New Roman;font-size:8pt;"&gt;&#x25cf;&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-style:italic;"&gt;Market Disruption and Geopolitical Risk&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; &#x2013; Geopolitical and other events (e.g., wars, pandemics, sanctions, terrorism, diplomatic tensions, dramatic changes in regulatory and/or foreign policy, cyberattacks, and rapid technological developments such as artificial intelligence) often disrupt securities markets and adversely affect the general economy or particular economies and markets. Those events, as well as other changes in non-U.S. and U.S. economic and political conditions, could exacerbate other risks or otherwise reduce the value of the Fund&#x2019;s investments.&lt;/span&gt;</oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="S000056707_CommoditiesRiskMember"
      id="f268307f-f997-44c5-b66a-98080332bb38">&lt;span style="color:#000000;font-family:Times New Roman;font-size:8pt;"&gt;&#x25cf;&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-style:italic;"&gt;Commodities Risk&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; &#x2013; Commodity prices can be extremely volatile, and exposure to commodities can cause the net asset value of the Fund&#x2019;s shares to decline or fluctuate significantly&#160;in a rapid and unpredictable manner.&lt;/span&gt;</oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="S000056707_CurrencyRiskMember"
      id="x_22fae81c-5513-4d3e-89e8-567f340d5f16">&lt;span style="color:#000000;font-family:Times New Roman;font-size:8pt;"&gt;&#x25cf;&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-style:italic;"&gt;Currency Risk&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; &#x2013; Fluctuations in exchange rates can adversely affect the market value of the Fund&#x2019;s foreign currency holdings and investments denominated in foreign currencies.&lt;/span&gt;</oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="S000056707_DerivativesandShortSalesRiskMember"
      id="x_583e9a33-f7d8-4fb1-9e44-ab39b29c76c5">&lt;span style="color:#000000;font-family:Times New Roman;font-size:8pt;"&gt;&#x25cf;&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-style:italic;"&gt;Derivatives and Short Sales Risk&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; &#x2013; The use of derivatives involves the risk that their value may not change as expected relative to changes in the value of the underlying assets, pools of assets, rates, currencies or indices. Derivatives also present other risks, including market risk, illiquidity risk, currency risk, credit risk, leveraging risk, commodities risk and counterparty risk. The market price of an option is affected by many factors, including changes in the market prices or dividend rates of underlying securities (or in the case of indices, the securities in such indices); the time remaining before expiration; changes in interest rates or exchange rates; and changes in the actual or perceived volatility of the relevant index or underlying securities. The Fund typically creates short investment exposure by selling securities short or by taking a derivative position in which the value of the derivative moves in the opposite direction from the price of an underlying asset, pool of assets, rate, currency or index. Specifically, the net asset value of &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;margin-left:0.00%;"&gt;the Fund&#x2019;s shares will be adversely affected if the securities or other assets that are the subject of the Fund&#x2019;s short exposures appreciate in value. The risk of loss associated with derivatives that provide short investment exposure and short sales of securities &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;is theoretically unlimited.&lt;/span&gt;</oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="S000056707_CounterpartyRiskMember"
      id="x_142a7f65-1746-42f8-b5a1-e601dede3ff6">&lt;span style="color:#000000;font-family:Times New Roman;font-size:8pt;"&gt;&#x25cf;&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-style:italic;"&gt;Counterparty Risk&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; &#x2013; The Fund runs the risk that the counterparty to a derivatives contract or a clearing member used by the Fund to hold a cleared derivatives contract is unable or unwilling to make timely settlement payments, return the Fund&#x2019;s collateral or otherwise honor its obligations.&lt;/span&gt;</oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="S000056707_LeveragingRiskMember"
      id="f804ea66-2dd7-4c82-9e18-9f0cb017ae32">&lt;span style="color:#000000;font-family:Times New Roman;font-size:8pt;"&gt;&#x25cf;&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-style:italic;"&gt;Leveraging Risk&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; &#x2013; The use of derivatives, short sales and securities lending can create leverage. Leverage increases the Fund&#x2019;s losses when the value of its investments (including derivatives) declines. In addition, the Fund&#x2019;s portfolio will be leveraged if it exercises its right to delay payment on a redemption and the value of the Fund&#x2019;s assets declines between the time a redemption request is treated as being received by the Fund and the time the Fund liquidates assets to fund that redemption.&lt;/span&gt;</oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="S000056707_LargeTransactionsRiskMember"
      id="e560e209-0ebe-46d5-8a96-7438211611f3">&lt;span style="color:#000000;font-family:Times New Roman;font-size:8pt;"&gt;&#x25cf;&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-style:italic;"&gt;Large Transactions Risk&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; &#x2013; To the extent that a large number of shares of the Fund is held by a single shareholder (e.g., an institutional investor or another GMO Fund) or a group of shareholders with a common investment strategy (e.g., GMO asset allocation accounts), the Fund is subject to the risk that a redemption by (or caused by) that shareholder or group will require the Fund to sell investments at disadvantageous prices, disrupt the Fund&#x2019;s operations, lead to temporary overexposure to the Fund&#x2019;s intended investment program or force the Fund&#x2019;s liquidation. The Fund also may be subject to these effects when a number of shareholders collectively redeem or sell a large amount of Fund shares.&lt;/span&gt;</oef:RiskTextBlock>
    <oef:BarChartAndPerformanceTableHeading
      contextRef="S000056707"
      id="b0fdebdf-37d5-4d56-aeed-25a59ac874bf">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-weight:bold;"&gt;Performance&lt;/span&gt;</oef:BarChartAndPerformanceTableHeading>
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      id="x_77bf4b9e-bdc7-4e8f-bffc-dbc7d6ef29ea">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;margin-left:3.76%;"&gt;The bar chart and table below provide some indication of the risks of investing in the Fund by showing changes in the Fund&#x2019;s &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;annual total returns from year to year for the periods indicated and by comparing the Fund&#x2019;s average annual total returns for different calendar periods with those of a broad-based securities market index intended solely to represent, in satisfaction of regulatory requirements, the overall global equity market.&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; Share classes not shown would have substantially similar annual returns to those below &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;because all share classes invest in the same portfolio of securities. Annual returns vary among share classes to the extent that they bear different expenses. Share classes that bear higher expenses than the share classes shown below would have lower returns. &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;After-tax &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;returns are calculated using the historical highest individual federal marginal income tax rates and do not reflect the impact of state and local taxes.&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; Actual after-tax returns depend on your tax situation and may differ from those shown. After-tax returns shown are not &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;relevant if you are tax-exempt or if you hold your Fund shares through tax-advantaged arrangements (such as a 401(k) plan or individual retirement account). &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;After-tax returns are shown for Class III shares only; after-tax returns for other classes will vary.&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;Updated performance information for the Fund is available at &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;www.gmo.com&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;. &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;Past performance (before and after taxes) is not an &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;indication of future performance.&lt;/span&gt;</oef:PerformanceNarrativeTextBlock>
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      id="a3268d6c-b654-4eea-89b1-a9810d87e334">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;Past performance (before and after taxes) is not an &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;indication of future performance.&lt;/span&gt;</oef:PerformancePastDoesNotIndicateFuture>
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      id="abb000b6-3717-488f-8db3-7adcede1a1df">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-weight:bold;"&gt;Annual Total Returns/Class III Shares&lt;/span&gt; &lt;br/&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;Years Ending December 31&lt;/span&gt;</oef:BarChartHeading>
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      id="x_64981861-a62d-4115-ae03-685eaef64f35">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;Highest Quarter:&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;33.30%&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;-sec-ix-hidden:x_67863832-6be1-474e-af6b-e6f2bcb9126f"&gt;4Q 2020&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;Lowest Quarter:&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;-28.16%&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;-sec-ix-hidden:fb2eb306-f41d-4c25-a525-5208f6efaff6"&gt;1Q 2020&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;Year-to-Date:&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;-9.67%&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;As of&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;3/31/2025&lt;/span&gt;</oef:BarChartClosingTextBlock>
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      id="x_5fa8d6a8-40a2-4364-9706-696115062ba8">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;Highest Quarter:&lt;/span&gt;</oef:HighestQuarterlyReturnLabel>
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      id="x_7a9b7fd1-1382-4f41-ae8b-b8c037275161">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;Year-to-Date:&lt;/span&gt;</oef:YearToDateReturnLabel>
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      id="x_39d47db9-d959-4d4b-8fff-e081e73daeba">2025-03-31</oef:BarChartYearToDateReturnDate>
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      id="x_13475cf6-814b-4e3c-a671-b3650cfb0d88">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-weight:bold;"&gt;Average Annual Total Returns&lt;/span&gt; &lt;br/&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;Periods Ending December 31, 2024&lt;/span&gt;</oef:PerformanceTableHeading>
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      id="x_8039fa01-36b7-498e-924c-fe889d0a40c0">2017-04-05</oef:PerfInceptionDate>
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      id="x_35e6fe78-59df-4f6a-ab87-d4f7d6fed7c0">2020-01-16</oef:PerfInceptionDate>
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      decimals="4"
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      id="x_41abe40d-9ddc-49b0-bc30-8203bfcfd501"
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      contextRef="C000213398_MSCIACWIMember_25Feb2020_31Dec2024"
      decimals="4"
      id="x_7282d170-b53e-4a80-b8f9-2b473a862819"
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    <oef:ObjectiveHeading
      contextRef="S000004911"
      id="x_4d73558f-b5ed-4bb2-8be6-f230de4e60ed">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-weight:bold;"&gt;Investment objective&lt;/span&gt;</oef:ObjectiveHeading>
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      id="adbccb58-0565-4397-ade1-c2ddb74773a4">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;Total return.&lt;/span&gt;</oef:ObjectivePrimaryTextBlock>
    <oef:ExpenseHeading
      contextRef="S000004911"
      id="x_9678fb89-35f7-4621-a820-af1875de3819">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-weight:bold;"&gt;Fees and expenses&lt;/span&gt;</oef:ExpenseHeading>
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      contextRef="S000004911"
      id="x_397316ff-6c34-4425-810a-a6ce1f8ae4d3">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;margin-left:3.76%;"&gt;The table below describes the fees and expenses that you may bear for each class of shares if you buy, hold, and sell shares of the &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;Fund. You may pay other fees, such as brokerage commissions and other fees to financial intermediaries, which are not reflected in the table and example below.&lt;/span&gt;</oef:ExpenseNarrativeTextBlock>
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      id="x_0f1bd669-6817-4a3e-a31c-0a5e8a159466">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-weight:bold;"&gt;Annual Fund operating expenses &lt;/span&gt; &lt;br/&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;(expenses that you bear each year as a percentage of the value of your investment)&lt;/span&gt;</oef:OperatingExpensesCaption>
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      id="d94b78a6-079b-48fa-88a0-074fecc4d227"
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      decimals="4"
      id="a116a4af-0bc1-4e48-b146-2fb4d38c784b"
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      id="d4a07176-116c-44c8-9619-eaabe803de95"
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      decimals="5"
      id="x_32b73aa0-1afb-4e5d-a208-c7fab31d357b"
      unitRef="pure">0.00735</oef:ManagementFeesOverAssets>
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      decimals="5"
      id="x_8d283be2-9fb4-4cdf-87a6-8c52729fb522"
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      contextRef="S000004911_C000213362"
      decimals="4"
      id="x_17e36ad2-5444-44c6-813b-e38bfe8cdc1b"
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      contextRef="S000004911_C000213363"
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      id="x_3ef09847-9db9-4ff1-8056-a4a407d312eb"
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      id="x_2116577c-2052-4fe8-bedb-087c84e7c018"
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      decimals="4"
      id="x_36d96061-b7c1-4866-a07a-c29182d060f6"
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      id="x_6ca93168-da40-4aba-994c-367e4d97fc1c">&lt;span style="color:#000000;font-family:Times New Roman;font-size:8pt;font-style:italic;"&gt;June 30, 2026&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:8pt;font-style:italic;"&gt;June 30, 2026&lt;/span&gt;</oef:FeeWaiverOrReimbursementOverAssetsDateOfTermination>
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      id="x_98e9fb6b-dd6e-4883-98ef-8f487e0400b3">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-weight:bold;"&gt;Example&lt;/span&gt;</oef:ExpenseExampleHeading>
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      id="x_9bf54bd7-f6d5-4399-92ab-7699965aaa60">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;margin-left:3.76%;"&gt;This example is intended to help you compare the cost of investing in the Fund with the cost of investing in other funds. The &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;example assumes that you invest $10,000 in the Fund for the time periods indicated, regardless of whether or not you redeem your shares at the end of such periods. The example also assumes that your investment has a 5% return each year and that the Fund&#x2019;s operating expenses remain the same as those shown in the table. The one year amounts shown reflect the expense reimbursement and waiver noted in the expense table. Although your actual costs may be higher or lower, based on these assumptions your costs would be:&lt;/span&gt;</oef:ExpenseExampleNarrativeTextBlock>
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      id="x_228e369f-3e50-4f06-b45a-96dabdadc90f"
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      id="afc3b6dc-3e6d-4ce6-aac5-dd9f79786d37"
      unitRef="USD">349</oef:ExpenseExampleYear03>
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      id="x_5de2a441-9ca7-4dfb-a81d-bba51b9bb69d"
      unitRef="USD">613</oef:ExpenseExampleYear05>
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      id="x_1770550c-3bb0-43e5-9e9a-a9ccce83fea4"
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      id="x_0c9875e6-bea1-4da5-97fe-de856bc3c8b9"
      unitRef="USD">100</oef:ExpenseExampleYear01>
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      id="x_585c904b-52cb-46a6-b60a-be111f7bdaba"
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      id="b79d1099-f4cf-4520-a365-d9f2d00cf3f8"
      unitRef="USD">577</oef:ExpenseExampleYear05>
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      id="x_2cd4f4ed-2ab4-4e27-a3a9-75febd3686ef"
      unitRef="USD">1287</oef:ExpenseExampleYear10>
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      decimals="INF"
      id="x_3d84f38a-d6f5-4fe8-b4b3-bd7be7b9bb9b"
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      decimals="INF"
      id="x_694b505c-8070-4826-936e-35a0a0800e63"
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      contextRef="S000004911_C000013270"
      decimals="INF"
      id="x_7534c115-cb84-41be-8e58-0344a407d8d0"
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      contextRef="S000004911_C000013270"
      decimals="INF"
      id="x_8cf55959-06fb-4b41-bce9-2dbdb980a5f5"
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      decimals="INF"
      id="be8479b7-86ad-4ca9-a37f-55474dc32cf2"
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      contextRef="S000004911_C000013271"
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      id="d092737c-1bca-4b05-86e5-e17a1d177f5d"
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      decimals="INF"
      id="f36c3ccd-bae4-47fa-acf6-94b6eede23cf"
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      contextRef="S000004911_C000013271"
      decimals="INF"
      id="d213d369-21a7-4a83-bb95-01cfe89264ad"
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      contextRef="S000004911_C000013272"
      decimals="INF"
      id="x_69905c71-da2b-479f-8a60-cd173cf87a37"
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      decimals="INF"
      id="x_6d10f341-37cb-48ed-9c17-f15be56b8f18"
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      contextRef="S000004911_C000013272"
      decimals="INF"
      id="ad67b600-662a-4bc9-8f0a-b1aaee61685e"
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      contextRef="S000004911_C000013272"
      decimals="INF"
      id="x_2dd0b635-7de8-47fc-ae80-04811812c1d5"
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      contextRef="S000004911_C000213362"
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      id="b3fd5771-8e6b-4ef8-845d-56eaae2f4e24"
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      id="x_1c2134f4-54e5-4616-8907-1b2c01d8e2c2"
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      contextRef="S000004911_C000213362"
      decimals="INF"
      id="x_26154601-49b4-4609-835b-5569c30c305a"
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      contextRef="S000004911_C000213362"
      decimals="INF"
      id="b681a8ae-a235-48c5-a284-b390d22ead73"
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      contextRef="S000004911_C000213363"
      decimals="INF"
      id="x_127b2b28-f904-4fb6-a4bf-257283b2d5ae"
      unitRef="USD">114</oef:ExpenseExampleYear01>
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      contextRef="S000004911_C000213363"
      decimals="INF"
      id="x_668505b3-c545-454b-a3dc-dd0e8c00b4a1"
      unitRef="USD">386</oef:ExpenseExampleYear03>
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      decimals="INF"
      id="x_96f83d92-475b-4e0a-bdd0-e344439cd4f6"
      unitRef="USD">678</oef:ExpenseExampleYear05>
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      id="x_5af89067-dbb6-4c23-84db-827ea8c1abca"
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    <oef:PortfolioTurnoverHeading
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      id="x_47539b65-9593-4c4d-8abc-bb15aa4b0f65">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-weight:bold;"&gt;Portfolio turnover&lt;/span&gt;</oef:PortfolioTurnoverHeading>
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      id="ad795166-d0a2-4420-964f-6e3a144e1dda">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;margin-left:3.76%;"&gt;The Fund pays transaction costs, such as commissions, when it buys and sells securities. A higher portfolio turnover rate may &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;result in higher transaction costs and, for holders of Fund shares subject to U.S. taxes, higher income taxes. These transaction costs, which are not reflected in Annual Fund operating expenses or in the Example, affect the Fund&#x2019;s performance.&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; During its fiscal year &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;ended February 28, 2025, the Fund&#x2019;s portfolio turnover rate (excluding short-term investments) was &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;141&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;% of the average value of its portfolio securities.&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; That portfolio turnover rate includes investments in U.S. Treasury Fund, which the Fund uses as a short-term &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;investment vehicle for cash management. The Fund&#x2019;s portfolio turnover rate during its fiscal year ended February 28, 2025, excluding transactions in U.S. Treasury Fund and other short-term investments, was 118% of the average value of its portfolio securities.&lt;/span&gt;</oef:PortfolioTurnoverTextBlock>
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      id="x_223a87a1-dd14-40ea-a435-827457297725">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-weight:bold;"&gt;Principal investment strategies&lt;/span&gt;</oef:StrategyHeading>
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      id="x_511c56e2-2f08-4b1c-b744-ce58d61f4c38">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;margin-left:3.76%;"&gt;GMO seeks to achieve the Fund&#x2019;s investment objective by investing the Fund&#x2019;s assets primarily in companies tied economically to &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;markets that are not treated as developed markets in the MSCI World Index (&#x201c;emerging markets&#x201d;). GMO selects the securities the Fund buys and sells based on its evaluation of companies&#x2019; published financial information, securities&#x2019; prices, equity and other markets, the overall global economy, and governmental policies. &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;margin-left:3.76%;"&gt;In selecting securities for the Fund, GMO uses a combination of proprietary quantitative investment methods to identify emerging &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;market equities GMO believes have positive return potential relative to other emerging markets equities. Some of these methods evaluate individual companies or groups of companies based on (among other factors) the ratio of their security price to historical financial information and forecasted financial information, such as return on invested capital, profitability, cash flow and earnings, and a comparison of these ratios to current and historical averages. Other methods focus on patterns of information, such as price movement or volatility of an asset class, security, or market, and macroeconomic factors. In constructing the Fund&#x2019;s portfolio, GMO also considers position size, sector and industry exposure, country and region exposure, currencies, market capitalization, risk relative to the benchmark, liquidity, and transaction costs. GMO also may consider ESG (environmental, social and governance) criteria. For example, GMO generally avoids investing the Fund&#x2019;s assets in companies engaged in the manufacture, supply, or distribution of cluster munitions, as well as companies primarily involved in the mining and production of thermal coal. At times, the Fund may have substantial exposure to a single asset class, industry, sector, country, region, issuer, or currency and companies with similar market capitalizations. The factors GMO considers and investment methods GMO uses can change over time.&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;margin-left:3.76%;"&gt;As an alternative to investing directly in equities, the Fund may invest in exchange-traded and over-the-counter (OTC) derivatives &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;and exchange-traded funds (ETFs). The Fund also may invest in derivatives and ETFs in an attempt to obtain or adjust elements of its long or short investment exposure. Derivatives used may include options, futures, forward currency contracts, and swap contracts. GMO typically seeks to limit the carbon intensity of the Fund&#x2019;s portfolio to no more than that of the MSCI Emerging Markets Index. In addition, the Fund may lend its portfolio securities.&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;margin-left:3.76%;"&gt;Under normal circumstances, the Fund invests directly and indirectly (through underlying funds or derivatives) at least 80% of its &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;assets in emerging markets companies (see &#x201c;Name Policies&#x201d;). &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;margin-left:3.76%;"&gt;The Fund also may invest in U.S. Treasury Fund, in money market funds unaffiliated with GMO, and directly in the types of &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;investments typically held by money market funds.&lt;/span&gt;</oef:StrategyNarrativeTextBlock>
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      id="aefb9cd0-2f58-4675-96b1-d3512e417d3a">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;Many factors can affect this value, and you may lose money by investing in the Fund.&lt;/span&gt;</oef:RiskTextBlock>
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      contextRef="S000004911_RiskNotInsuredDepositoryInstitutionMember"
      id="x_29d873f9-5840-4d2c-be5e-01226cc72620">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;An investment in the Fund is not a bank deposit and is not insured or guaranteed by the FDIC or &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;any government agency.&lt;/span&gt;</oef:RiskTextBlock>
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      contextRef="S000004911_MarketRiskEquitiesRiskMember"
      id="x_1b1206ca-bfe9-4cb1-a23a-69b929904900">&lt;span style="color:#000000;font-family:Times New Roman;font-size:8pt;"&gt;&#x25cf;&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-style:italic;"&gt;Market Risk &#x2013; Equities &#x2013; &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;The market price of an equity in the Fund&#x2019;s portfolio may decline due to factors affecting the issuer or its industry or the economy and equity markets generally. If the Fund purchases an equity for less than its fundamental fair (or intrinsic) value as assessed by GMO, the Fund runs the risk that the market price of the equity will not appreciate or will decline (for example, if GMO&#x2019;s assessment proves to be incorrect or the market fails to recognize the equity&#x2019;s intrinsic value). The Fund also may purchase equities that typically trade at higher multiples of current earnings than other securities, and the market prices of these equities often are more sensitive to changes in future earnings expectations and interest rates than the market prices of equities trading at lower multiples. Declines in stock market prices generally are likely to reduce the net asset value of the Fund&#x2019;s shares.&lt;/span&gt;</oef:RiskTextBlock>
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      contextRef="S000004911_ManagementandOperationalRiskMember"
      id="x_972828a1-3dd0-4353-b8aa-6b0f25d3a68d">&lt;span style="color:#000000;font-family:Times New Roman;font-size:8pt;"&gt;&#x25cf;&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-style:italic;"&gt;Management and Operational Risk&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; &#x2013; The Fund runs the risk that GMO&#x2019;s investment techniques will fail to produce intended results.&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;GMO uses quantitative models as part of its investment process. GMO&#x2019;s models may not accurately predict future market movements. In addition, GMO&#x2019;s models rely on assumptions and data that are subject to limitations (e.g., inaccuracies, staleness) that could adversely affect their predictive value.&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; The Fund also runs the risk that GMO&#x2019;s assessment of an investment, including a &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;security&#x2019;s fundamental fair (or intrinsic) value, is wrong or that deficiencies in GMO&#x2019;s or another service provider&#x2019;s internal systems or controls will cause losses for the Fund or impair Fund operations.&lt;/span&gt;</oef:RiskTextBlock>
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      contextRef="S000004911_NonUSInvestmentRiskMember"
      id="x_4a17efd1-9760-46de-b6e1-f84e1e7a421e">&lt;span style="color:#000000;font-family:Times New Roman;font-size:8pt;"&gt;&#x25cf;&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-style:italic;"&gt;Non-U.S. Investment Risk&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; &#x2013; The market prices of many non-U.S. securities fluctuate more than those of U.S. securities. Many non-U.S. securities markets are less stable, smaller, less liquid, and less regulated than U.S. securities markets, and the cost of trading in those markets often is higher than in U.S. securities markets. In addition, non-U.S. securities issuers often are not subject to as much regulation as U.S. issuers, and the reporting, recordkeeping, accounting, custody, and auditing standards to which those issuers are subject often are not as rigorous as U.S. standards. In addition, the Fund is subject to taxation by countries other than the United States, including potentially on a retroactive basis, on (i) capital gains it realizes or dividends, interest, or other amounts it realizes or accrues in respect of non-U.S. investments; (ii) transactions in those investments; and (iii) repatriation of proceeds generated from the sale or other disposition of those investments.&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; Also, the Fund needs a license to invest directly in securities &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;traded in many non-U.S. securities markets, and the Fund is subject to the risk that its license is terminated or suspended. In some non-U.S. securities markets, prevailing custody and trade settlement practices (e.g., the requirement to pay for securities prior to &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;margin-left:0.00%;"&gt;receipt) expose the Fund to credit and other risks. Further, adverse changes in investment regulations, capital requirements or exchange controls could adversely affect the value of the Fund&#x2019;s investments. The risks above (such as substantial price fluctuations and market instability, illiquidity and lack of regulation) and other risks (e.g., nationalization, expropriation or other confiscation of assets of non-U.S. issuers, difficulties enforcing legal judgments or contractual rights and geopolitical risks) tend to be higher for investments in the securities of issuers tied economically to emerging countries. The economies of emerging countries often depend &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;predominantly on only a few industries or commodities and often are more volatile than the economies of developed countries.&lt;/span&gt;</oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="S000004911_MarketDisruptionandGeopoliticalRiskMember"
      id="d305817d-f4c8-4486-b6c8-eb3f837e3371">&lt;span style="color:#000000;font-family:Times New Roman;font-size:8pt;"&gt;&#x25cf;&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-style:italic;"&gt;Market Disruption and Geopolitical Risk&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; &#x2013; Geopolitical and other events (e.g., wars, pandemics, sanctions, terrorism, diplomatic tensions, dramatic changes in regulatory and/or foreign policy, cyberattacks, and rapid technological developments such as artificial intelligence) often disrupt securities markets and adversely affect the general economy or particular economies and markets. Those events, as well as other changes in non-U.S. and U.S. economic and political conditions, could exacerbate other risks or otherwise reduce the value of the Fund&#x2019;s investments.&lt;/span&gt;</oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="S000004911_CurrencyRiskMember"
      id="x_187faf49-1b5a-4b8a-a55c-3cce20b2a5c3">&lt;span style="color:#000000;font-family:Times New Roman;font-size:8pt;"&gt;&#x25cf;&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-style:italic;"&gt;Currency Risk&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; &#x2013; Fluctuations in exchange rates can adversely affect the market value of the Fund&#x2019;s foreign currency holdings and investments denominated in foreign currencies.&lt;/span&gt;</oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="S000004911_IlliquidityRiskMember"
      id="ada142fc-3ba2-4a69-906d-fa2ae4205a7a">&lt;span style="color:#000000;font-family:Times New Roman;font-size:8pt;"&gt;&#x25cf;&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-style:italic;"&gt;Illiquidity Risk&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; &#x2013; Low trading volume, lack of a market maker, large position size, or legal restrictions increase the risk that the Fund or an underlying fund is limited or prevented from selling particular securities or closing derivative positions at desirable prices at a particular time or at all.&lt;/span&gt;</oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="S000004911_SmallerCompanyRiskMember"
      id="x_1b4f615d-f20a-49da-91f4-e877b9352b56">&lt;span style="color:#000000;font-family:Times New Roman;font-size:8pt;"&gt;&#x25cf;&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-style:italic;"&gt;Smaller Company Risk&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; &#x2013; Smaller companies may have limited product lines, markets, or financial resources, lack the competitive strength of larger companies, have less experienced managers or depend on a few key employees. The securities of companies with smaller market capitalizations often are less widely held and trade less frequently and in lesser quantities, and their market prices often fluctuate more, than the securities of companies with larger market capitalizations.&lt;/span&gt;</oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="S000004911_FocusedInvestmentRiskMember"
      id="x_58f67eaa-a647-46ec-8e5a-3dd670fbd527">&lt;span style="color:#000000;font-family:Times New Roman;font-size:8pt;"&gt;&#x25cf;&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-style:italic;"&gt;Focused Investment Risk&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; &#x2013; Investments in countries, regions, asset classes, sectors, industries, currencies, or issuers that are subject to the same or similar risk factors and investments whose market prices are closely correlated are subject to higher overall risk than investments that are more diversified or whose market prices are not as closely correlated.&lt;/span&gt;</oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="S000004911_CounterpartyRiskMember"
      id="x_9b0d637e-c292-49f8-9d03-115b2e7d01fd">&lt;span style="color:#000000;font-family:Times New Roman;font-size:8pt;"&gt;&#x25cf;&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-style:italic;"&gt;Counterparty Risk&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; &#x2013; The Fund runs the risk that the counterparty to a derivatives contract or a clearing member used by the Fund to hold a cleared derivatives contract is unable or unwilling to make timely settlement payments, return the Fund&#x2019;s collateral or otherwise honor its obligations.&lt;/span&gt;</oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="S000004911_DerivativesandShortSalesRiskMember"
      id="x_7d57ea70-a7be-4a3b-a125-0a1af630554b">&lt;span style="color:#000000;font-family:Times New Roman;font-size:8pt;"&gt;&#x25cf;&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-style:italic;"&gt;Derivatives and Short Sales Risk&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; &#x2013; The use of derivatives involves the risk that their value may not change as expected relative to changes in the value of the underlying assets, pools of assets, rates, currencies or indices. Derivatives also present other risks, including market risk, illiquidity risk, currency risk, credit risk, leveraging risk, commodities risk and counterparty risk. The market price of an option is affected by many factors, including changes in the market prices or dividend rates of underlying securities (or in the case of indices, the securities in such indices); the time remaining before expiration; changes in interest rates or exchange rates; and changes in the actual or perceived volatility of the relevant index or underlying securities. The Fund typically creates short investment exposure by selling securities short or by taking a derivative position in which the value of the derivative moves in the opposite direction from the price of an underlying asset, pool of assets, rate, currency or index. Specifically, the net asset value of the Fund&#x2019;s shares will be adversely affected if the securities or other assets that are the subject of the Fund&#x2019;s short exposures appreciate in value. The risk of loss associated with derivatives that provide short investment exposure and short sales of securities is theoretically unlimited.&lt;/span&gt;</oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="S000004911_FundofFundsRiskMember"
      id="x_0db84a24-cfaf-49f7-be8c-5eab8e5eccc6">&lt;span style="color:#000000;font-family:Times New Roman;font-size:8pt;"&gt;&#x25cf;&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-style:italic;"&gt;Fund of Funds Risk&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; &#x2013; The Fund is indirectly exposed to all of the risks of an investment in the underlying funds in which it invests, including the risk that those underlying funds will not perform as expected.&lt;/span&gt;</oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="S000004911_LeveragingRiskMember"
      id="dfa846d3-28d2-4792-8555-388fc7412dff">&lt;span style="color:#000000;font-family:Times New Roman;font-size:8pt;"&gt;&#x25cf;&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-style:italic;"&gt;Leveraging Risk&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; &#x2013; The use of derivatives, short sales and securities lending can create leverage. Leverage increases the Fund&#x2019;s losses when the value of its investments (including derivatives) declines. In addition, the Fund&#x2019;s portfolio will be leveraged if it exercises its right to delay payment on a redemption and the value of the Fund&#x2019;s assets declines between the time a redemption request is treated as being received by the Fund and the time the Fund liquidates assets to fund that redemption.&lt;/span&gt;</oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="S000004911_LargeTransactionsRiskMember"
      id="x_3728adcd-ef36-4559-b19f-57e5d71d201b">&lt;span style="color:#000000;font-family:Times New Roman;font-size:8pt;"&gt;&#x25cf;&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-style:italic;"&gt;Large Transactions Risk&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; &#x2013; To the extent that a large number of shares of the Fund is held by a single shareholder (e.g., an institutional investor or another GMO Fund) or a group of shareholders with a common investment strategy (e.g., GMO asset allocation accounts), the Fund is subject to the risk that a redemption by (or caused by) that shareholder or group will require the Fund to sell investments at disadvantageous prices, disrupt the Fund&#x2019;s operations, lead to temporary overexposure to the Fund&#x2019;s intended investment program or force the Fund&#x2019;s liquidation. The Fund also may be subject to these effects when a number of shareholders collectively redeem or sell a large amount of Fund shares.&lt;/span&gt;</oef:RiskTextBlock>
    <oef:BarChartAndPerformanceTableHeading
      contextRef="S000004911"
      id="x_9b3fa2b9-e3b1-4b2d-8857-55c7bd55df1d">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-weight:bold;"&gt;Performance&lt;/span&gt;</oef:BarChartAndPerformanceTableHeading>
    <oef:PerformanceNarrativeTextBlock
      contextRef="S000004911"
      id="x_0b863175-1d00-4efd-9a3d-1c74fef5e2d9">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;margin-left:3.76%;"&gt;The bar chart and table below provide some indication of the risks of investing in the Fund by showing changes in the Fund&#x2019;s &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;annual total returns from year to year for the periods indicated and by comparing the Fund&#x2019;s average annual total returns for different calendar periods with those of a broad-based securities market index.&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; Share classes not shown would have substantially similar annual &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;returns to those below because all share classes invest in the same portfolio of securities. Annual returns vary among share classes to the extent that they bear different expenses. Share classes that bear higher expenses than the share classes shown below would have lower returns. &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;After-tax returns are calculated using the historical highest individual federal marginal income tax rates and do not reflect the &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;impact of state and local taxes.&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; Actual after-tax returns depend on your tax situation and may differ from those shown. After-tax returns &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;shown are not relevant if you are tax-exempt or if you hold your Fund shares through tax-advantaged arrangements (such as a 401(k) plan or individual retirement account). &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;After-tax returns are shown for Class III shares only; after-tax returns for other classes &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;will vary.&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; Updated performance information for the Fund is available at &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;www.gmo.com&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;. &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;Past performance (before and after taxes) is not an indication of future performance.&lt;/span&gt;</oef:PerformanceNarrativeTextBlock>
    <oef:PerformanceInformationIllustratesVariabilityOfReturns
      contextRef="S000004911"
      id="x_746946c0-b6e6-4477-8df8-87de24ea84b3">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;margin-left:3.76%;"&gt;The bar chart and table below provide some indication of the risks of investing in the Fund by showing changes in the Fund&#x2019;s &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;annual total returns from year to year for the periods indicated and by comparing the Fund&#x2019;s average annual total returns for different calendar periods with those of a broad-based securities market index.&lt;/span&gt;</oef:PerformanceInformationIllustratesVariabilityOfReturns>
    <oef:PerformanceTableUsesHighestFederalRate
      contextRef="S000004911"
      id="d13311fd-31bf-412a-8f3e-94823221f138">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;After-tax returns are calculated using the historical highest individual federal marginal income tax rates and do not reflect the &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;impact of state and local taxes.&lt;/span&gt;</oef:PerformanceTableUsesHighestFederalRate>
    <oef:PerformanceTableNotRelevantToTaxDeferred
      contextRef="S000004911"
      id="x_23db6f87-1931-43d3-a527-330e3de4b8f5">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; Actual after-tax returns depend on your tax situation and may differ from those shown. After-tax returns &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;shown are not relevant if you are tax-exempt or if you hold your Fund shares through tax-advantaged arrangements (such as a 401(k) plan or individual retirement account). &lt;/span&gt;</oef:PerformanceTableNotRelevantToTaxDeferred>
    <oef:PerformanceTableOneClassOfAfterTaxShown
      contextRef="S000004911"
      id="bbd2c77c-cc9c-4754-b4aa-43d795dfa6bc">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;After-tax returns are shown for Class III shares only; after-tax returns for other classes &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;will vary.&lt;/span&gt;</oef:PerformanceTableOneClassOfAfterTaxShown>
    <oef:PerformanceAvailabilityWebSiteAddress
      contextRef="S000004911"
      id="x_1a5a80a4-1061-472e-9519-6955e6d3a7f2">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;www.gmo.com&lt;/span&gt;</oef:PerformanceAvailabilityWebSiteAddress>
    <oef:PerformancePastDoesNotIndicateFuture
      contextRef="S000004911"
      id="d30e669a-35b4-4be3-a59c-9518cd12383e">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;Past performance (before and after taxes) is not an indication of future performance.&lt;/span&gt;</oef:PerformancePastDoesNotIndicateFuture>
    <oef:BarChartHeading
      contextRef="S000004911"
      id="x_37fafda5-1ac3-4576-babb-472a12fa02c5">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-weight:bold;"&gt;Annual Total Returns/Class III Shares&lt;/span&gt; &lt;br/&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;Years Ending December 31&lt;/span&gt;</oef:BarChartHeading>
    <oef:BarChartClosingTextBlock
      contextRef="S000004911"
      id="x_055b3192-586e-438a-a766-162312771ac5">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;Highest Quarter:&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;15.88%&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;-sec-ix-hidden:x_2992d61c-7a85-4bdc-b304-cb89ca9426a3"&gt;2Q 2020&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;Lowest Quarter:&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;-24.26%&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;-sec-ix-hidden:x_672967b8-12e3-4365-acf7-1aebaf0b36fc"&gt;1Q 2020&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;Year-to-Date:&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;3.15%&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;As of&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;3/31/2025&lt;/span&gt;</oef:BarChartClosingTextBlock>
    <oef:HighestQuarterlyReturnLabel
      contextRef="S000004911_C000013269"
      id="x_150e53ed-d90c-4de3-a27f-e0f1c14cbc5a">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;Highest Quarter:&lt;/span&gt;</oef:HighestQuarterlyReturnLabel>
    <oef:BarChartHighestQuarterlyReturn
      contextRef="S000004911_C000013269"
      decimals="4"
      id="x_37fd09c8-c913-45c4-a866-a1011119b388"
      unitRef="pure">0.1588</oef:BarChartHighestQuarterlyReturn>
    <oef:LowestQuarterlyReturnLabel
      contextRef="S000004911_C000013269"
      id="x_507a23ab-5e24-4205-8aa0-e4e19c97e76a">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;Lowest Quarter:&lt;/span&gt;</oef:LowestQuarterlyReturnLabel>
    <oef:BarChartLowestQuarterlyReturn
      contextRef="S000004911_C000013269"
      decimals="4"
      id="da14e6dd-a79a-4ea4-9c59-bdac62ed5e84"
      unitRef="pure">-0.2426</oef:BarChartLowestQuarterlyReturn>
    <oef:YearToDateReturnLabel
      contextRef="S000004911_C000013269"
      id="x_397c6940-53ab-43b3-9564-2c38d3aa2765">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;Year-to-Date:&lt;/span&gt;</oef:YearToDateReturnLabel>
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      contextRef="S000004911_C000013269"
      decimals="4"
      id="x_26511f8d-f8b1-4d55-9e62-1f43983782db"
      unitRef="pure">0.0315</oef:BarChartYearToDateReturn>
    <oef:BarChartYearToDateReturnDate
      contextRef="S000004911_C000013269"
      id="da7c3c15-4400-4198-b0f3-e445ae19b553">2025-03-31</oef:BarChartYearToDateReturnDate>
    <oef:PerformanceTableHeading
      contextRef="S000004911"
      id="d22b60d1-a6c4-4d43-955e-9c21521a64f0">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-weight:bold;"&gt;Average Annual Total Returns&lt;/span&gt; &lt;br/&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;Periods Ending December 31, 2024&lt;/span&gt;</oef:PerformanceTableHeading>
    <oef:PerfInceptionDate
      contextRef="C000013268"
      id="x_2b9d51a5-a640-4bd0-83ff-849f5eaad1c8">1996-11-29</oef:PerfInceptionDate>
    <oef:AvgAnnlRtrPct
      contextRef="C000013268_01Jan2024_31Dec2024"
      decimals="4"
      id="d5f92994-dd85-445a-9ac4-402379832f97"
      unitRef="pure">0.0327</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000013268_01Jan2020_31Dec2024"
      decimals="4"
      id="dad2b2e7-991c-4b60-b8fa-28995f3d4802"
      unitRef="pure">-0.0223</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000013268_01Jan2015_31Dec2024"
      decimals="4"
      id="x_29bd1ad2-1301-4226-bf0c-76a1b5c5c81d"
      unitRef="pure">0.0203</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000013268_29Nov1996_31Dec2024"
      decimals="4"
      id="a2ce3598-a132-487f-b04b-3b788b70cfed"
      unitRef="pure">0.0595</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000013268_MSCIEmergingMarketsIndexMember_01Jan2024_31Dec2024"
      decimals="4"
      id="e7e6df28-e30c-4f4e-956e-ffa2dcde14bf"
      unitRef="pure">0.0750</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000013268_MSCIEmergingMarketsIndexMember_01Jan2020_31Dec2024"
      decimals="4"
      id="x_64945189-3e2b-4983-b60a-e31f6aa3e725"
      unitRef="pure">0.0170</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000013268_MSCIEmergingMarketsIndexMember_01Jan2015_31Dec2024"
      decimals="4"
      id="x_777847d6-2e52-4b64-a8b5-57b72f0a4b8f"
      unitRef="pure">0.0364</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000013268_MSCIEmergingMarketsIndexMember_29Nov1996_31Dec2024"
      decimals="4"
      id="e9ed5fec-cd5e-4646-a2dc-9c13259e30ae"
      unitRef="pure">0.0541</oef:AvgAnnlRtrPct>
    <oef:PerfInceptionDate
      contextRef="C000013269"
      id="a67a58d4-72f1-4854-a392-e4dfee3d8fe8">1993-12-09</oef:PerfInceptionDate>
    <oef:AvgAnnlRtrPct
      contextRef="C000013269_01Jan2024_31Dec2024"
      decimals="4"
      id="bafcf4f5-9ceb-4512-b375-ec2ad2522a4f"
      unitRef="pure">0.0340</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000013269_01Jan2020_31Dec2024"
      decimals="4"
      id="x_9547f056-9170-4ec5-a143-25dac6485fa6"
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    <oef:ObjectiveHeading
      contextRef="S000072426"
      id="x_92d510c4-e124-41c5-9315-31030bf49216">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-weight:bold;"&gt;Investment objective&lt;/span&gt;</oef:ObjectiveHeading>
    <oef:ObjectivePrimaryTextBlock
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      id="x_182faea1-6926-4d67-9cfe-1bbcaaa10514">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;Total return.&lt;/span&gt;</oef:ObjectivePrimaryTextBlock>
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      id="x_56b3a4f8-98a8-482c-a240-2afcb13570cc">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-weight:bold;"&gt;Fees and expenses&lt;/span&gt;</oef:ExpenseHeading>
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      id="x_42f93d64-1e68-4234-be26-6f37b4bda92a">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;margin-left:3.76%;"&gt;The table below describes the fees and expenses that you may bear for each class of shares if you buy, hold, and sell shares of the &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;Fund. You may pay other fees, such as brokerage commissions and other fees to financial intermediaries, which are not reflected in the table and example below.&lt;/span&gt;</oef:ExpenseNarrativeTextBlock>
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      id="c27ce43c-fb2a-4911-a428-a23308039eba">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-weight:bold;"&gt;Annual Fund operating expenses&#xb9;&lt;/span&gt; &lt;br/&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;(expenses that you bear each year as a percentage of the value of your investment)&lt;/span&gt;</oef:OperatingExpensesCaption>
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      id="x_5584795d-e59a-46eb-a808-fef4d470b5c1"
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      id="x_926f9d9c-d23c-4423-a445-11c2ce08f4be"
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      id="x_21f8a89e-7a15-4944-8cef-0d81031435d7"
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      id="x_32412ca1-a16d-443c-be22-bf65159b4103"
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      unitRef="pure">-0.0062</oef:FeeWaiverOrReimbursementOverAssets>
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      id="x_4d9c7e08-9d03-470d-9a83-7963884a524c"
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      id="x_3ef05aea-7926-45e1-8f96-3464a4643373"
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      decimals="4"
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    <oef:NetExpensesOverAssets
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      decimals="4"
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    <oef:NetExpensesOverAssets
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    <oef:FeeWaiverOrReimbursementOverAssetsDateOfTermination
      contextRef="S000072426"
      id="x_375956f2-b2de-4fbc-b1dc-eebc44ed0c51">&lt;span style="color:#000000;font-family:Times New Roman;font-size:8pt;font-style:italic;"&gt;June 30, 2026&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:8pt;font-style:italic;"&gt;June 30, 2026&lt;/span&gt;</oef:FeeWaiverOrReimbursementOverAssetsDateOfTermination>
    <oef:ExpenseExampleHeading
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      id="x_33a15daa-7868-41a8-b45e-347bd77ecb6a">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-weight:bold;"&gt;Example&lt;/span&gt;</oef:ExpenseExampleHeading>
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      id="fd79660b-3f8b-4ae4-ae66-a4ffa76f754f">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;margin-left:3.76%;"&gt;This example is intended to help you compare the cost of investing in the Fund with the cost of investing in other funds. The &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;example assumes that you invest $10,000 in the Fund for the time periods indicated, regardless of whether or not you redeem your shares at the end of such periods. The example also assumes that your investment has a 5% return each year and that the Fund&#x2019;s operating expenses remain the same as those shown in the table. The one year amounts shown reflect the expense reimbursement and waiver noted in the expense table. Although your actual costs may be higher or lower, based on these assumptions your costs would be:&lt;/span&gt;</oef:ExpenseExampleNarrativeTextBlock>
    <oef:ExpenseExampleYear01
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      decimals="INF"
      id="x_665fec7e-42f7-4edc-ba72-8ea4e9527c36"
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      decimals="INF"
      id="d0f6ea0c-8eb3-41db-8717-af4fba46638b"
      unitRef="USD">407</oef:ExpenseExampleYear03>
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      id="e778ab6d-b9ac-4b3c-af1d-88053bdea587">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-weight:bold;"&gt;Portfolio turnover&lt;/span&gt;</oef:PortfolioTurnoverHeading>
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      id="c98870cc-52cc-40d5-9c47-32a7b194e181">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;margin-left:3.76%;"&gt;The Fund pays transaction costs, such as commissions, when it buys and sells securities. A higher portfolio turnover rate may &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;result in higher transaction costs and, for holders of Fund shares subject to U.S. taxes, higher income taxes. These transaction costs, which are not reflected in Annual Fund operating expenses or in the Example, affect the Fund&#x2019;s performance.&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; During its fiscal year &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;ended February 28, 2025, the Fund&#x2019;s portfolio turnover rate (excluding short-term investments) was &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;103&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;% of the average value of its &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;margin-left:0%;"&gt;portfolio securities.&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; That portfolio turnover rate includes investments in U.S. Treasury Fund, which the Fund uses as a short-term &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;margin-left:0%;"&gt;investment vehicle for cash management. The Fund&#x2019;s portfolio turnover rate during its fiscal year ended February 28, 2025, excluding &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;transactions in U.S. Treasury Fund and other short-term investments, was 86% of the average value of its portfolio securities.&lt;/span&gt;</oef:PortfolioTurnoverTextBlock>
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      id="x_997d5cce-3cbd-494a-a61b-444db1ae6004">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-weight:bold;"&gt;Principal investment strategies&lt;/span&gt;</oef:StrategyHeading>
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      id="x_82e9d8e3-c0da-4e36-a995-a1a8ee87db34">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;margin-left:3.76%;"&gt;GMO seeks to achieve the Fund&#x2019;s investment objective by investing the Fund&#x2019;s assets primarily in companies tied economically to &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;markets that are not treated as developed markets in the MSCI World Index, with the exception of companies domiciled or listed for trading in China (&#x201c;emerging markets&#x201d;). GMO selects the securities the Fund buys and sells based on its evaluation of companies&#x2019; published financial information, securities&#x2019; prices, equity and other markets, the overall global economy, and governmental policies. &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;margin-left:3.76%;"&gt;In selecting securities for the Fund, GMO uses a combination of proprietary quantitative investment methods to identify emerging &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;market equities GMO believes have positive return potential relative to other emerging markets equities. Some of these methods evaluate individual companies or groups of companies based on (among other factors) the ratio of their security price to historical financial information and forecasted financial information, such as return on invested capital, profitability, cash flow and earnings, and a comparison of these ratios to current and historical averages. Other methods focus on patterns of information, such as price movement or volatility of an asset class, security, or market, and macroeconomic factors. In constructing the Fund&#x2019;s portfolio, GMO also considers position size, sector and industry exposure, country and region exposure, currencies, market capitalization, risk relative to the benchmark, liquidity, and transaction costs. GMO also may consider ESG (environmental, social and governance) criteria. For example, GMO generally avoids investing the Fund&#x2019;s assets in companies engaged in the manufacture, supply, or distribution of cluster munitions, as well as companies primarily involved in the mining and production of thermal coal. At times, the Fund may have substantial exposure to a single asset class, industry, sector, country, region, issuer, or currency and companies with similar market capitalizations. The Fund may invest in securities of companies of any market capitalization. The factors GMO considers and investment methods GMO uses can change over time.&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;margin-left:3.76%;"&gt;As an alternative to investing directly in equities, the Fund may invest in exchange-traded and over-the-counter (OTC) derivatives &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;and exchange-traded funds (ETFs). The Fund also may invest in derivatives and ETFs in an attempt to obtain or adjust elements of its long or short investment exposure. Derivatives used may include options, futures, forward currency contracts, and swap contracts. GMO typically seeks to limit the carbon intensity of the Fund&#x2019;s portfolio to no more than that of the MSCI Emerging Markets ex-China Index. In addition, the Fund may lend its portfolio securities.&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;margin-left:3.76%;"&gt;Under normal circumstances, the Fund invests directly and indirectly (through underlying funds or derivatives) at least 80% of its &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;assets in emerging markets companies (see &#x201c;Name Policies&#x201d;).&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;margin-left:3.76%;"&gt;The Fund also may invest in U.S. Treasury Fund, in money market funds unaffiliated with GMO, and directly in the types of &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;investments typically held by money market funds.&lt;/span&gt;</oef:StrategyNarrativeTextBlock>
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      id="x_1a91db7f-cbd7-43d5-97cb-ef0782bdcbe0">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;Many factors can affect this value, and you may lose money by investing in the Fund.&lt;/span&gt;</oef:RiskTextBlock>
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      id="x_6d6a12d3-8df9-48ef-8ef7-d4a812192cda">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;An investment in the Fund is not a bank deposit and is not insured or guaranteed by the FDIC or &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;any government agency.&lt;/span&gt;</oef:RiskTextBlock>
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      contextRef="S000072426_MarketRiskEquitiesRiskMember"
      id="x_02bb1c9d-3815-4ceb-82dc-e4b9fd10c20a">&lt;span style="color:#000000;font-family:Times New Roman;font-size:8pt;"&gt;&#x25cf;&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-style:italic;"&gt;Market Risk &#x2013; Equities &#x2013; &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;The market price of an equity in the Fund&#x2019;s portfolio may decline due to factors affecting the issuer or its industry or the economy and equity markets generally. If the Fund purchases an equity for less than its fundamental fair (or intrinsic) value as assessed by GMO, the Fund runs the risk that the market price of the equity will not appreciate or will decline (for example, if GMO&#x2019;s assessment proves to be incorrect or the market fails to recognize the equity&#x2019;s intrinsic value). The Fund also may purchase equities that typically trade at higher multiples of current earnings than other securities, and the market prices of these equities often are more sensitive to changes in future earnings expectations and interest rates than the market prices of equities trading at lower multiples. Declines in stock market prices generally are likely to reduce the net asset value of the Fund&#x2019;s shares.&lt;/span&gt;</oef:RiskTextBlock>
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      id="fd1c5384-67cb-4f4c-9157-a5595a18739d">&lt;span style="color:#000000;font-family:Times New Roman;font-size:8pt;"&gt;&#x25cf;&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-style:italic;"&gt;Management and Operational Risk&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; &#x2013; The Fund runs the risk that GMO&#x2019;s investment techniques will fail to produce intended results.&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;GMO uses quantitative models as part of its investment process. GMO&#x2019;s models may not accurately predict future market movements. In addition, GMO&#x2019;s models rely on assumptions and data that are subject to limitations (e.g., inaccuracies, staleness) that could adversely affect their predictive value.&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; The Fund also runs the risk that GMO&#x2019;s assessment of an investment, including a &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;security&#x2019;s fundamental fair (or intrinsic) value, is wrong or that deficiencies in GMO&#x2019;s or another service provider&#x2019;s internal systems or controls will cause losses for the Fund or impair Fund operations.&lt;/span&gt;</oef:RiskTextBlock>
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      contextRef="S000072426_NonUSInvestmentRiskMember"
      id="x_88a385a7-4629-416b-bdf5-e2f1e2300b60">&lt;span style="color:#000000;font-family:Times New Roman;font-size:8pt;"&gt;&#x25cf;&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-style:italic;"&gt;Non-U.S. Investment Risk&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; &#x2013; The market prices of many non-U.S. securities fluctuate more than those of U.S. securities. Many non-U.S. securities markets are less stable, smaller, less liquid, and less regulated than U.S. securities markets, and the cost of trading in those markets often is higher than in U.S. securities markets. In addition, non-U.S. securities issuers often are not subject to as much regulation as U.S. issuers, and the reporting, recordkeeping, accounting, custody, and auditing standards to which those issuers are subject often are not as rigorous as U.S. standards. In addition, the Fund is subject to taxation by countries other than the &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;margin-left:0.00%;"&gt;United States, including potentially on a retroactive basis, on (i) capital gains it realizes or dividends, interest, or other amounts it realizes or accrues in respect of non-U.S. investments; (ii) transactions in those investments; and (iii) repatriation of proceeds generated from the sale or other disposition of those investments.&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; Also, the Fund needs a license to invest directly in securities &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;margin-left:0.00%;"&gt;traded in many non-U.S. securities markets, and the Fund is subject to the risk that its license is terminated or suspended. In some non-U.S. securities markets, prevailing custody and trade settlement practices (e.g., the requirement to pay for securities prior to receipt) expose the Fund to credit and other risks. Further, adverse changes in investment regulations, capital requirements or exchange controls could adversely affect the value of the Fund&#x2019;s investments. The risks above (such as substantial price fluctuations and market instability, illiquidity and lack of regulation) and other risks (e.g., nationalization, expropriation or other confiscation of assets of non-U.S. issuers, difficulties enforcing legal judgments or contractual rights and geopolitical risks) tend to be higher for investments in the securities of issuers tied economically to emerging countries. The economies of emerging countries often depend &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;predominantly on only a few industries or commodities and often are more volatile than the economies of developed countries.&lt;/span&gt;</oef:RiskTextBlock>
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      contextRef="S000072426_MarketDisruptionandGeopoliticalRiskMember"
      id="x_13e6bd3c-944d-4554-b429-5240c1059369">&lt;span style="color:#000000;font-family:Times New Roman;font-size:8pt;"&gt;&#x25cf;&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-style:italic;"&gt;Market Disruption and Geopolitical Risk&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; &#x2013; Geopolitical and other events (e.g., wars, pandemics, sanctions, terrorism, diplomatic tensions, dramatic changes in regulatory and/or foreign policy, cyberattacks, and rapid technological developments such as artificial intelligence) often disrupt securities markets and adversely affect the general economy or particular economies and markets. Those events, as well as other changes in non-U.S. and U.S. economic and political conditions, could exacerbate other risks or otherwise reduce the value of the Fund&#x2019;s investments.&lt;/span&gt;</oef:RiskTextBlock>
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      contextRef="S000072426_CurrencyRiskMember"
      id="x_645d9886-fd92-460a-b17c-f9c52444c771">&lt;span style="color:#000000;font-family:Times New Roman;font-size:8pt;"&gt;&#x25cf;&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-style:italic;"&gt;Currency Risk&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; &#x2013; Fluctuations in exchange rates can adversely affect the market value of the Fund&#x2019;s foreign currency holdings and investments denominated in foreign currencies.&lt;/span&gt;</oef:RiskTextBlock>
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      contextRef="S000072426_IlliquidityRiskMember"
      id="f9261a79-a040-41dc-99e2-3d4e7d94e516">&lt;span style="color:#000000;font-family:Times New Roman;font-size:8pt;"&gt;&#x25cf;&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-style:italic;"&gt;Illiquidity Risk&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; &#x2013; Low trading volume, lack of a market maker, large position size, or legal restrictions increase the risk that the Fund or an underlying fund is limited or prevented from selling particular securities or closing derivative positions at desirable prices at a particular time or at all.&lt;/span&gt;</oef:RiskTextBlock>
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      contextRef="S000072426_SmallerCompanyRiskMember"
      id="fb40e815-eaac-48e5-bbe1-2ac4d2531e3e">&lt;span style="color:#000000;font-family:Times New Roman;font-size:8pt;"&gt;&#x25cf;&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-style:italic;"&gt;Smaller Company Risk&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; &#x2013; Smaller companies may have limited product lines, markets, or financial resources, lack the competitive strength of larger companies, have less experienced managers or depend on a few key employees. The securities of companies with smaller market capitalizations often are less widely held and trade less frequently and in lesser quantities, and their market prices often fluctuate more, than the securities of companies with larger market capitalizations.&lt;/span&gt;</oef:RiskTextBlock>
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      contextRef="S000072426_FocusedInvestmentRiskMember"
      id="x_6a5c6498-45d1-4091-b3a2-c0435b643154">&lt;span style="color:#000000;font-family:Times New Roman;font-size:8pt;"&gt;&#x25cf;&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-style:italic;"&gt;Focused Investment Risk&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; &#x2013; Investments in countries, regions, asset classes, sectors, industries, currencies, or issuers that are subject to the same or similar risk factors and investments whose market prices are closely correlated are subject to higher overall risk than investments that are more diversified or whose market prices are not as closely correlated.&lt;/span&gt;</oef:RiskTextBlock>
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      contextRef="S000072426_CounterpartyRiskMember"
      id="e142ebbc-9b90-409d-9850-c62f0c1a2bef">&lt;span style="color:#000000;font-family:Times New Roman;font-size:8pt;"&gt;&#x25cf;&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-style:italic;"&gt;Counterparty Risk&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; &#x2013; The Fund runs the risk that the counterparty to a derivatives contract or a clearing member used by the Fund to hold a cleared derivatives contract is unable or unwilling to make timely settlement payments, return the Fund&#x2019;s collateral or otherwise honor its obligations.&lt;/span&gt;</oef:RiskTextBlock>
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      contextRef="S000072426_DerivativesandShortSalesRiskMember"
      id="x_68e493bd-488e-4033-b9c1-5b2b6cca2d09">&lt;span style="color:#000000;font-family:Times New Roman;font-size:8pt;"&gt;&#x25cf;&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-style:italic;"&gt;Derivatives and Short Sales Risk&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; &#x2013; The use of derivatives involves the risk that their value may not change as expected relative to changes in the value of the underlying assets, pools of assets, rates, currencies or indices. Derivatives also present other risks, including market risk, illiquidity risk, currency risk, credit risk, leveraging risk, commodities risk and counterparty risk. The market price of an option is affected by many factors, including changes in the market prices or dividend rates of underlying securities (or in the case of indices, the securities in such indices); the time remaining before expiration; changes in interest rates or exchange rates; and changes in the actual or perceived volatility of the relevant index or underlying securities. The Fund typically creates short investment exposure by selling securities short or by taking a derivative position in which the value of the derivative moves in the opposite direction from the price of an underlying asset, pool of assets, rate, currency or index. Specifically, the net asset value of the Fund&#x2019;s shares will be adversely affected if the securities or other assets that are the subject of the Fund&#x2019;s short exposures appreciate in value. The risk of loss associated with derivatives that provide short investment exposure and short sales of securities is theoretically unlimited.&lt;/span&gt;</oef:RiskTextBlock>
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      contextRef="S000072426_FundofFundsRiskMember"
      id="a8c058c7-c12b-41f6-9f8c-0201047a88e5">&lt;span style="color:#000000;font-family:Times New Roman;font-size:8pt;"&gt;&#x25cf;&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-style:italic;"&gt;Fund of Funds Risk&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; &#x2013; The Fund is indirectly exposed to all of the risks of an investment in the underlying funds in which it invests, including the risk that those underlying funds will not perform as expected.&lt;/span&gt;</oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="S000072426_LeveragingRiskMember"
      id="x_4db610c8-1798-4168-8d33-0e21a7255567">&lt;span style="color:#000000;font-family:Times New Roman;font-size:8pt;"&gt;&#x25cf;&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-style:italic;"&gt;Leveraging Risk&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; &#x2013; The use of derivatives, short sales and securities lending can create leverage. Leverage increases the Fund&#x2019;s losses when the value of its investments (including derivatives) declines. In addition, the Fund&#x2019;s portfolio will be leveraged if it exercises its right to delay payment on a redemption and the value of the Fund&#x2019;s assets declines between the time a redemption request is treated as being received by the Fund and the time the Fund liquidates assets to fund that redemption.&lt;/span&gt;</oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="S000072426_LargeTransactionsRiskMember"
      id="e5015512-c817-420f-ba44-28ebc0a7c191">&lt;span style="color:#000000;font-family:Times New Roman;font-size:8pt;"&gt;&#x25cf;&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-style:italic;"&gt;Large Transactions Risk&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; &#x2013; To the extent that a large number of shares of the Fund is held by a single shareholder (e.g., an institutional investor or another GMO Fund) or a group of shareholders with a common investment strategy (e.g., GMO asset allocation accounts), the Fund is subject to the risk that a redemption by (or caused by) that shareholder or group will require the Fund to sell investments at disadvantageous prices, disrupt the Fund&#x2019;s operations, lead to temporary overexposure to the Fund&#x2019;s intended investment program or force the Fund&#x2019;s liquidation. The Fund also may be subject to these effects when a number of shareholders collectively redeem or sell a large amount of Fund shares.&lt;/span&gt;</oef:RiskTextBlock>
    <oef:BarChartAndPerformanceTableHeading
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      id="ae2a045e-16ee-4089-bb59-1eca2b9e5715">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-weight:bold;"&gt;Performance&lt;/span&gt;</oef:BarChartAndPerformanceTableHeading>
    <oef:PerformanceNarrativeTextBlock
      contextRef="S000072426"
      id="facf12fd-1732-4c9c-8508-5dd9a1e1cac4">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;margin-left:3.76%;"&gt;The bar chart and table below provide some indication of the risks of investing in the Fund by showing changes in the Fund&#x2019;s &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;annual total returns from year to year for the periods indicated and by comparing the Fund&#x2019;s average annual total returns for different calendar periods with those of a broad-based securities market index.&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; Share classes not shown would have substantially similar annual &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;returns to those below because all share classes invest in the same portfolio of securities. Annual returns vary among share classes to the extent that they bear different expenses. Share classes that bear higher expenses than the share classes shown below would have lower returns. &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;After-tax returns are calculated using the historical highest individual federal marginal income tax rates and do not reflect the &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;impact of state and local taxes.&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; Actual after-tax returns depend on your tax situation and may differ from those shown. After-tax returns &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;shown are not relevant if you are tax-exempt or if you hold your Fund shares through tax-advantaged arrangements (such as a 401(k) plan or individual retirement account). &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;After-tax returns are shown for Class III shares only; after-tax returns for other classes &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;will vary.&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; Updated performance information for the Fund is available at &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;www.gmo.com&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;. &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;Past performance (before and after taxes) is not an indication of future performance.&lt;/span&gt;</oef:PerformanceNarrativeTextBlock>
    <oef:PerformanceInformationIllustratesVariabilityOfReturns
      contextRef="S000072426"
      id="x_8b41b8b4-ebf6-482b-84d1-b2cb35b871b8">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;margin-left:3.76%;"&gt;The bar chart and table below provide some indication of the risks of investing in the Fund by showing changes in the Fund&#x2019;s &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;annual total returns from year to year for the periods indicated and by comparing the Fund&#x2019;s average annual total returns for different calendar periods with those of a broad-based securities market index.&lt;/span&gt;</oef:PerformanceInformationIllustratesVariabilityOfReturns>
    <oef:PerformanceTableUsesHighestFederalRate
      contextRef="S000072426"
      id="x_10e608e2-5dcc-4c4a-b7f5-587dea595c6c">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;After-tax returns are calculated using the historical highest individual federal marginal income tax rates and do not reflect the &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;impact of state and local taxes.&lt;/span&gt;</oef:PerformanceTableUsesHighestFederalRate>
    <oef:PerformanceTableNotRelevantToTaxDeferred
      contextRef="S000072426"
      id="eeb2a56c-40ef-41f2-9f5a-6b433eaabf88">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; Actual after-tax returns depend on your tax situation and may differ from those shown. After-tax returns &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;shown are not relevant if you are tax-exempt or if you hold your Fund shares through tax-advantaged arrangements (such as a 401(k) plan or individual retirement account). &lt;/span&gt;</oef:PerformanceTableNotRelevantToTaxDeferred>
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      contextRef="S000072426"
      id="x_6e1f8539-fae6-4f27-82ca-a632e6900a04">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;After-tax returns are shown for Class III shares only; after-tax returns for other classes &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;will vary.&lt;/span&gt;</oef:PerformanceTableOneClassOfAfterTaxShown>
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      id="x_8ffd2f87-a18f-46b8-9474-fede775a74f1">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;www.gmo.com&lt;/span&gt;</oef:PerformanceAvailabilityWebSiteAddress>
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      contextRef="S000072426"
      id="x_42a3af16-c4f9-4277-9dc2-64f24716dac4">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;Past performance (before and after taxes) is not an indication of future performance.&lt;/span&gt;</oef:PerformancePastDoesNotIndicateFuture>
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      id="d9d06311-436a-4234-8027-529f039c76da">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-weight:bold;"&gt;Annual Total Returns/Class III Shares&lt;/span&gt; &lt;br/&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;Years Ending December 31&lt;/span&gt;</oef:BarChartHeading>
    <oef:BarChartClosingTextBlock
      contextRef="S000072426"
      id="d2da30eb-5f6e-4365-b182-02fd8a2fc958">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;Highest Quarter:&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;15.67%&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;-sec-ix-hidden:x_9917794e-5cf3-46a5-9061-e2f850daa4cd"&gt;4Q 2023&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;Lowest Quarter:&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;-21.34%&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;-sec-ix-hidden:x_175b1a06-bf5c-4578-8e08-babbfbaf89a0"&gt;1Q 2022&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;Year-to-Date:&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;-1.29%&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;As of&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;3/31/2025&lt;/span&gt;</oef:BarChartClosingTextBlock>
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      id="b7a65105-7a4c-4a23-8ccd-21d7b71c37b3">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;Highest Quarter:&lt;/span&gt;</oef:HighestQuarterlyReturnLabel>
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      decimals="4"
      id="x_4b487a68-1609-486b-86c0-a483b8e7961c"
      unitRef="pure">0.1567</oef:BarChartHighestQuarterlyReturn>
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      id="a02b8e5e-13b8-4702-9d77-a1467d09f5d6">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;Lowest Quarter:&lt;/span&gt;</oef:LowestQuarterlyReturnLabel>
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      decimals="4"
      id="x_8a6bde41-4f14-40aa-a44c-be09892d3e67"
      unitRef="pure">-0.2134</oef:BarChartLowestQuarterlyReturn>
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      id="d9bc36b8-acce-4f85-9a4f-e28c500e7652">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;Year-to-Date:&lt;/span&gt;</oef:YearToDateReturnLabel>
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      contextRef="S000072426_C000228647"
      decimals="4"
      id="x_9fe24700-a60f-4992-8927-9056a3251669"
      unitRef="pure">-0.0129</oef:BarChartYearToDateReturn>
    <oef:BarChartYearToDateReturnDate
      contextRef="S000072426_C000228647"
      id="ef307354-6095-4493-bb2f-c28dca849f8e">2025-03-31</oef:BarChartYearToDateReturnDate>
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      contextRef="S000072426"
      id="db917545-10a1-455e-938c-82f602527727">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-weight:bold;"&gt;Average Annual Total Returns&lt;/span&gt; &lt;br/&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;Periods Ending December 31, 2024&lt;/span&gt;</oef:PerformanceTableHeading>
    <oef:PerfInceptionDate
      contextRef="C000228647"
      id="x_47bae959-d803-401d-b999-5d5a07695f8f">2021-11-17</oef:PerfInceptionDate>
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      contextRef="C000228647_01Jan2024_31Dec2024"
      decimals="4"
      id="x_5b80b917-ed39-4464-a8d9-b89ecc21aebe"
      unitRef="pure">0.0021</oef:AvgAnnlRtrPct>
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      contextRef="C000228647_17Nov2021_31Dec2024"
      decimals="4"
      id="x_7dd2c3cd-d4a4-448a-93ed-15f57cc1cb23"
      unitRef="pure">-0.0457</oef:AvgAnnlRtrPct>
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      contextRef="C000228647_AfterTaxesOnDistributionsMember_01Jan2024_31Dec2024"
      decimals="4"
      id="x_7f9eacd7-5a9f-4058-ae2c-2e92483970a8"
      unitRef="pure">-0.0657</oef:AvgAnnlRtrPct>
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      contextRef="C000228647_AfterTaxesOnDistributionsMember_17Nov2021_31Dec2024"
      decimals="4"
      id="x_0c2445b7-3f0e-4d9d-9e0c-0002a5a7f000"
      unitRef="pure">-0.0743</oef:AvgAnnlRtrPct>
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      contextRef="C000228647_AfterTaxesOnDistributionsAndSalesMember_01Jan2024_31Dec2024"
      decimals="4"
      id="x_692f5364-577a-4a4d-9efa-08954fb9d817"
      unitRef="pure">0.0379</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000228647_AfterTaxesOnDistributionsAndSalesMember_17Nov2021_31Dec2024"
      decimals="4"
      id="x_25eb98e0-27a1-49a5-9400-002b2abe8389"
      unitRef="pure">-0.0353</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000228647_MSCIEmergingMarketsexChinaIndexMember_01Jan2024_31Dec2024"
      decimals="4"
      id="fc7ba9bb-697f-4bf8-a2d4-d54bb0d84924"
      unitRef="pure">0.0356</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
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      decimals="4"
      id="x_3834d070-1e2a-4172-a86e-c1e6753780f8"
      unitRef="pure">-0.0001</oef:AvgAnnlRtrPct>
    <oef:PerfInceptionDate
      contextRef="C000228643"
      id="b0573d92-e962-4b60-b35b-f2c5f33ebcd8">2021-10-18</oef:PerfInceptionDate>
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      contextRef="C000228643_01Jan2024_31Dec2024"
      decimals="4"
      id="x_1636cf30-66af-4620-af97-8552deb47494"
      unitRef="pure">0.0038</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000228643_18Oct2021_31Dec2024"
      decimals="4"
      id="x_81ae639b-ed98-44cc-a21a-5b0809ca936f"
      unitRef="pure">-0.0433</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000228643_MSCIEmergingMarketsexChinaIndexMember_01Jan2024_31Dec2024"
      decimals="4"
      id="f68f7dc7-2294-46f6-91a3-6695b5eb2cc1"
      unitRef="pure">0.0356</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000228643_MSCIEmergingMarketsexChinaIndexMember_18Oct2021_31Dec2024"
      decimals="4"
      id="a7378c7a-e163-40d1-ba22-0208ff639820"
      unitRef="pure">0.0005</oef:AvgAnnlRtrPct>
    <oef:ObjectiveHeading
      contextRef="S000005490"
      id="x_66fd51ef-9527-4de8-a324-0a9c2c1fffd4">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-weight:bold;"&gt;Investment objective&lt;/span&gt;</oef:ObjectiveHeading>
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      id="x_128c58b2-8315-4be4-adfe-a42a43f57785">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;Total return greater than that of its benchmark, the MSCI World Index.&lt;/span&gt;</oef:ObjectivePrimaryTextBlock>
    <oef:ExpenseHeading
      contextRef="S000005490"
      id="x_28077618-173d-4931-9283-c2a9c7afa2df">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-weight:bold;"&gt;Fees and expenses&lt;/span&gt;</oef:ExpenseHeading>
    <oef:ExpenseNarrativeTextBlock
      contextRef="S000005490"
      id="ffc1e2df-5dcd-440e-8009-bf1d7c9f0a8a">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;margin-left:3.76%;"&gt;The table below describes the fees and expenses that you may bear for each class of shares if you buy, hold, and sell shares of the &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;Fund. You may pay other fees, such as brokerage commissions and other fees to financial intermediaries, which are not reflected in the table and example below.&lt;/span&gt;</oef:ExpenseNarrativeTextBlock>
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      id="x_6095c908-cea6-4bd2-97c6-ac9568a2fb9f">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-weight:bold;"&gt;Annual Fund operating expenses &lt;/span&gt; &lt;br/&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;(expenses that you bear each year as a percentage of the value of your investment)&lt;/span&gt;</oef:OperatingExpensesCaption>
    <oef:ManagementFeesOverAssets
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      decimals="4"
      id="x_04e5a3e4-1185-44b1-9d36-992ae7a12d0b"
      unitRef="pure">0.0000</oef:ManagementFeesOverAssets>
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      contextRef="S000005490_C000213380"
      decimals="4"
      id="x_40e20b2c-9904-45f2-8612-c7bb48c12589"
      unitRef="pure">0.0000</oef:ManagementFeesOverAssets>
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      contextRef="S000005490_C000213381"
      decimals="4"
      id="x_1eebf0e7-b4fc-4c4a-a22e-cc7cb59b35e3"
      unitRef="pure">0.0000</oef:ManagementFeesOverAssets>
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      contextRef="S000005490_C000014938"
      decimals="4"
      id="x_1534a3d9-5215-4124-a536-1bcd96842f36"
      unitRef="pure">0.0010</oef:OtherExpensesOverAssets>
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      contextRef="S000005490_C000213380"
      decimals="4"
      id="a1ff870b-b55d-40da-b2af-37506b4bce34"
      unitRef="pure">0.0010</oef:OtherExpensesOverAssets>
    <oef:OtherExpensesOverAssets
      contextRef="S000005490_C000213381"
      decimals="4"
      id="d444df68-c4c6-454e-b024-70c3dc494275"
      unitRef="pure">0.0022</oef:OtherExpensesOverAssets>
    <oef:AcquiredFundFeesAndExpensesOverAssets
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      decimals="4"
      id="x_8fa9a966-bc33-49ee-bc01-772ec68f97c9"
      unitRef="pure">0.0053</oef:AcquiredFundFeesAndExpensesOverAssets>
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      contextRef="S000005490_C000213380"
      decimals="4"
      id="fc6e843a-6749-46a6-98e8-4bb65af15796"
      unitRef="pure">0.0053</oef:AcquiredFundFeesAndExpensesOverAssets>
    <oef:AcquiredFundFeesAndExpensesOverAssets
      contextRef="S000005490_C000213381"
      decimals="4"
      id="x_53bfad42-f14e-405e-b5bd-3fe083e3c87d"
      unitRef="pure">0.0053</oef:AcquiredFundFeesAndExpensesOverAssets>
    <oef:ExpensesOverAssets
      contextRef="S000005490_C000014938"
      decimals="4"
      id="x_001a870c-3d0a-4c39-be76-a78e43477030"
      unitRef="pure">0.0063</oef:ExpensesOverAssets>
    <oef:ExpensesOverAssets
      contextRef="S000005490_C000213380"
      decimals="4"
      id="b570c406-19d9-42de-bd89-0d4143be2e90"
      unitRef="pure">0.0063</oef:ExpensesOverAssets>
    <oef:ExpensesOverAssets
      contextRef="S000005490_C000213381"
      decimals="4"
      id="f6130a63-c4a6-44cd-8dd8-d20935f83e5d"
      unitRef="pure">0.0075</oef:ExpensesOverAssets>
    <oef:FeeWaiverOrReimbursementOverAssets
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      id="x_3e5d7487-62e9-4527-8f0c-943e5a01a398"
      unitRef="pure">-0.0010</oef:FeeWaiverOrReimbursementOverAssets>
    <oef:FeeWaiverOrReimbursementOverAssets
      contextRef="S000005490_C000213380"
      decimals="4"
      id="x_946043db-3464-47e1-9ee7-2058b7f99503"
      unitRef="pure">-0.0010</oef:FeeWaiverOrReimbursementOverAssets>
    <oef:FeeWaiverOrReimbursementOverAssets
      contextRef="S000005490_C000213381"
      decimals="4"
      id="d6ed73f2-335a-4079-8f5c-757f48fd8327"
      unitRef="pure">-0.0010</oef:FeeWaiverOrReimbursementOverAssets>
    <oef:NetExpensesOverAssets
      contextRef="S000005490_C000014938"
      decimals="4"
      id="x_05481490-07d0-4559-889b-2af79c010a3c"
      unitRef="pure">0.0053</oef:NetExpensesOverAssets>
    <oef:NetExpensesOverAssets
      contextRef="S000005490_C000213380"
      decimals="4"
      id="fb1ff6ba-c0ff-4a87-ab6c-73cd14be5c73"
      unitRef="pure">0.0053</oef:NetExpensesOverAssets>
    <oef:NetExpensesOverAssets
      contextRef="S000005490_C000213381"
      decimals="4"
      id="c0e8d333-4168-495f-96df-c71eb7775c52"
      unitRef="pure">0.0065</oef:NetExpensesOverAssets>
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      contextRef="S000005490"
      id="f433b945-6121-430a-9cad-d2de880c68af">&lt;span style="color:#000000;font-family:Times New Roman;font-size:8pt;font-style:italic;"&gt;June 30, 2026&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:8pt;font-style:italic;"&gt;June 30, 2026&lt;/span&gt;</oef:FeeWaiverOrReimbursementOverAssetsDateOfTermination>
    <oef:ExpenseExampleHeading
      contextRef="S000005490"
      id="c3337016-0b01-4956-9d34-b235d3388248">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-weight:bold;"&gt;Example&lt;/span&gt;</oef:ExpenseExampleHeading>
    <oef:ExpenseExampleNarrativeTextBlock
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      id="x_50bb0c76-049c-4d5b-a405-0569e1189c74">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;margin-left:3.76%;"&gt;This example is intended to help you compare the cost of investing in the Fund with the cost of investing in other funds. The &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;example assumes that you invest $10,000 in the Fund for the time periods indicated, regardless of whether or not you redeem your shares at the end of such periods. The example also assumes that your investment has a 5% return each year and that the Fund&#x2019;s operating expenses remain the same as those shown in the table. The one year amounts shown reflect the expense reimbursement noted in the expense table. Although your actual costs may be higher or lower, based on these assumptions your costs would be:&lt;/span&gt;</oef:ExpenseExampleNarrativeTextBlock>
    <oef:ExpenseExampleYear01
      contextRef="S000005490_C000014938"
      decimals="INF"
      id="df87b57f-6098-4371-8041-7029a556e6e1"
      unitRef="USD">54</oef:ExpenseExampleYear01>
    <oef:ExpenseExampleYear03
      contextRef="S000005490_C000014938"
      decimals="INF"
      id="d1aaa912-4cd8-4bec-bdb5-6774d21aad6d"
      unitRef="USD">192</oef:ExpenseExampleYear03>
    <oef:ExpenseExampleYear05
      contextRef="S000005490_C000014938"
      decimals="INF"
      id="e88fbd0f-fbcc-44cf-b2c8-e56b9cdf9f3d"
      unitRef="USD">341</oef:ExpenseExampleYear05>
    <oef:ExpenseExampleYear10
      contextRef="S000005490_C000014938"
      decimals="INF"
      id="x_3bf77aab-38ce-4a43-b82c-ac573e2bcfd9"
      unitRef="USD">777</oef:ExpenseExampleYear10>
    <oef:ExpenseExampleYear01
      contextRef="S000005490_C000213380"
      decimals="INF"
      id="x_9f56bc06-4b9a-4049-94a2-e3c8ab6df6c5"
      unitRef="USD">54</oef:ExpenseExampleYear01>
    <oef:ExpenseExampleYear03
      contextRef="S000005490_C000213380"
      decimals="INF"
      id="x_46f20394-3ec4-41bf-89a7-d68051568cd2"
      unitRef="USD">192</oef:ExpenseExampleYear03>
    <oef:ExpenseExampleYear05
      contextRef="S000005490_C000213380"
      decimals="INF"
      id="x_8d804096-8a70-4741-9b30-0d2501ba5fe5"
      unitRef="USD">341</oef:ExpenseExampleYear05>
    <oef:ExpenseExampleYear10
      contextRef="S000005490_C000213380"
      decimals="INF"
      id="x_26a1f193-ef9e-4567-a78d-3ab86ef8e2ad"
      unitRef="USD">777</oef:ExpenseExampleYear10>
    <oef:ExpenseExampleYear01
      contextRef="S000005490_C000213381"
      decimals="INF"
      id="x_6baa34b1-416d-44aa-89d5-e8b00918b0ac"
      unitRef="USD">66</oef:ExpenseExampleYear01>
    <oef:ExpenseExampleYear03
      contextRef="S000005490_C000213381"
      decimals="INF"
      id="f82e83d8-1b5e-4115-a916-1290025c9c8e"
      unitRef="USD">230</oef:ExpenseExampleYear03>
    <oef:ExpenseExampleYear05
      contextRef="S000005490_C000213381"
      decimals="INF"
      id="x_6d875661-5be4-4ab0-bce2-4f6c927cfa5a"
      unitRef="USD">407</oef:ExpenseExampleYear05>
    <oef:ExpenseExampleYear10
      contextRef="S000005490_C000213381"
      decimals="INF"
      id="dabf53ae-ff47-4a21-861e-fd42d6993005"
      unitRef="USD">921</oef:ExpenseExampleYear10>
    <oef:PortfolioTurnoverHeading
      contextRef="S000005490"
      id="fa0c48ca-6b57-4e7b-840e-7cf70f3c0f88">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-weight:bold;"&gt;Portfolio turnover&lt;/span&gt;</oef:PortfolioTurnoverHeading>
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      contextRef="S000005490"
      id="e1901bbb-21db-4505-83da-48203bb6f0a4">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;margin-left:3.76%;"&gt;The Fund pays transaction costs, such as commissions, when it buys and sells securities. A higher portfolio turnover rate may &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;result in higher transaction costs and, for holders of Fund shares subject to U.S. taxes, higher income taxes. These transaction costs, which are not reflected in Annual Fund operating expenses or in the Example, affect the Fund&#x2019;s performance.&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; During its fiscal year &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;ended February 28, 2025, the Fund&#x2019;s portfolio turnover rate (excluding short-term investments) was &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;8&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;% of the average value of its portfolio securities.&lt;/span&gt;</oef:PortfolioTurnoverTextBlock>
    <oef:PortfolioTurnoverRate
      contextRef="S000005490"
      decimals="4"
      id="b5517748-8fe6-4bc9-8fb8-65a97f61e68d"
      unitRef="pure">0.08</oef:PortfolioTurnoverRate>
    <oef:StrategyHeading
      contextRef="S000005490"
      id="x_2eb0606d-2c98-4564-bbd9-9cdd53e77b38">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-weight:bold;"&gt;Principal investment strategies&lt;/span&gt;</oef:StrategyHeading>
    <oef:StrategyNarrativeTextBlock
      contextRef="S000005490"
      id="x_0dad74e7-cc69-4d0c-a6b4-7bc7998489fa">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;margin-left:3.76%;"&gt;The Fund is a fund of funds and invests primarily in equities traded in U.S. and non-U.S. markets (including emerging markets) &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;through its investment in the Equity Funds and in GMO-managed exchange-traded funds (collectively, the &#x201c;underlying GMO Funds&#x201d;) (see &#x201c;Additional Information About the Funds&#x2019; Investment Strategies, Risks, and Expenses &#x2014; Asset Allocation Funds&#x201d;). The Fund also may invest directly in securities (including other underlying funds) and derivatives.&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;margin-left:3.76%;"&gt;GMO uses its quantitative multi-year forecasts of returns among asset classes, together with its assessment of the relative risks of &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;asset classes, to determine the asset classes in which the Fund invests and how much the Fund invests in each asset class. An important component of those forecasts is GMO&#x2019;s expectation that valuations ultimately revert to their fundamental fair (or intrinsic) value over a complete market cycle. GMO changes the Fund&#x2019;s asset class exposures in response to changes in GMO&#x2019;s investment outlook and its assessment of market valuations and may use redemptions or purchases of Fund shares to rebalance the Fund&#x2019;s investments. The factors GMO considers and investment methods GMO uses can change over time.&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;margin-left:3.76%;"&gt;Under normal circumstances, the Fund invests (including through its investment in the underlying GMO Funds) at least 80% of its &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;assets in equities (see &#x201c;Name Policies&#x201d;). In addition, under normal circumstances, the Fund invests (including through its investment in the underlying GMO Funds) at least 80% of its assets in equities tied economically to developed markets (see &#x201c;Name Policies&#x201d;). The term &#x201c;developed markets&#x201d; means those countries included in the MSCI World Index, a global developed markets equity index, and countries with similar characteristics (e.g., countries that have sustained economic development, sufficient liquidity for listed companies and accessible markets). The Fund also may obtain exposure to equities tied economically to emerging markets (which are not part of the Fund&#x2019;s benchmark), but those investments typically will represent 10% or less of the Fund&#x2019;s net assets measured at the time of purchase. &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;margin-left:3.76%;"&gt;The Fund may invest in securities of companies of any market capitalization. In addition, the Fund may lend its portfolio &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;securities.&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;margin-left:3.76%;"&gt;The Fund also may invest in U.S. Treasury Fund, in money market funds unaffiliated with GMO, and directly in the types of &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;investments typically held by money market funds.&lt;/span&gt;</oef:StrategyNarrativeTextBlock>
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      contextRef="S000005490_RiskLoseMoneyMember"
      id="x_5ca77b2b-3d66-4424-8b55-c4e9eb07a2ff">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;Many factors can affect this value, and you may lose money by investing in the Fund.&lt;/span&gt;</oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="S000005490_RiskNotInsuredDepositoryInstitutionMember"
      id="x_97902b68-bf05-43df-bda2-bc7314a44a8a">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;An investment in the Fund is not a bank deposit and is not insured or guaranteed by the FDIC or &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;any government agency.&lt;/span&gt;</oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="S000005490_MarketRiskEquitiesRiskMember"
      id="be1ec9ca-492a-4db5-9b90-39d00ed5d8dd">&lt;span style="color:#000000;font-family:Times New Roman;font-size:8pt;"&gt;&#x25cf;&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-style:italic;"&gt;Market Risk &#x2013; Equities &#x2013; &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;The market price of an equity in the Fund&#x2019;s portfolio may decline due to factors affecting the issuer or its industry or the economy and equity markets generally. If the Fund purchases an equity for less than its fundamental fair (or intrinsic) value as assessed by GMO, the Fund runs the risk that the market price of the equity will not appreciate or will decline (for example, if GMO&#x2019;s assessment proves to be incorrect or the market fails to recognize the equity&#x2019;s intrinsic value). The Fund also may purchase equities that typically trade at higher multiples of current earnings than other securities, and the market prices of these equities often are more sensitive to changes in future earnings expectations and interest rates than the market prices of equities trading at lower multiples. Declines in stock market prices generally are likely to reduce the net asset value of the Fund&#x2019;s shares.&lt;/span&gt;</oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="S000005490_ManagementandOperationalRiskMember"
      id="x_64438a27-0a7c-4b2f-a973-84655aa60d46">&lt;span style="color:#000000;font-family:Times New Roman;font-size:8pt;"&gt;&#x25cf;&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-style:italic;"&gt;Management and Operational Risk&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; &#x2013; The Fund runs the risk that GMO&#x2019;s investment techniques will fail to produce intended results.&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;GMO uses quantitative models as part of its investment process. GMO&#x2019;s models may not accurately predict future market movements. In addition, GMO&#x2019;s models rely on assumptions and data that are subject to limitations (e.g., inaccuracies, staleness) that could adversely affect their predictive value.&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; The Fund also runs the risk that GMO&#x2019;s assessment of an investment, including a &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;security&#x2019;s fundamental fair (or intrinsic) value, is wrong or that deficiencies in GMO&#x2019;s or another service provider&#x2019;s internal systems or controls will cause losses for the Fund or impair Fund operations.&lt;/span&gt;</oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="S000005490_NonUSInvestmentRiskMember"
      id="x_5907e38e-b98e-417d-ae81-e0b9cedb1c7b">&lt;span style="color:#000000;font-family:Times New Roman;font-size:8pt;"&gt;&#x25cf;&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-style:italic;"&gt;Non-U.S. Investment Risk&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; &#x2013; The market prices of many non-U.S. securities fluctuate more than those of U.S. securities. Many non-U.S. securities markets are less stable, smaller, less liquid, and less regulated than U.S. securities markets, and the cost of trading in those markets often is higher than in U.S. securities markets. In addition, non-U.S. securities issuers often are not subject to as much regulation as U.S. issuers, and the reporting, recordkeeping, accounting, custody, and auditing standards to which those issuers are subject often are not as rigorous as U.S. standards. In addition, the Fund is subject to taxation by countries other than the United States, including potentially on a retroactive basis, on (i) capital gains it realizes or dividends, interest, or other amounts it realizes or accrues in respect of non-U.S. investments; (ii) transactions in those investments; and (iii) repatriation of proceeds generated from the sale or other disposition of those investments.&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; Also, the Fund needs a license to invest directly in securities &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;traded in many non-U.S. securities markets, and the Fund is subject to the risk that its license is terminated or suspended. In some non-U.S. securities markets, prevailing custody and trade settlement practices (e.g., the requirement to pay for securities prior to receipt) expose the Fund to credit and other risks. Further, adverse changes in investment regulations, capital requirements or exchange controls could adversely affect the value of the Fund&#x2019;s investments. The risks above (such as substantial price fluctuations and market instability, illiquidity and lack of regulation) and other risks (e.g., nationalization, expropriation or other confiscation of &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;margin-left:0.00%;"&gt;assets of non-U.S. issuers, difficulties enforcing legal judgments or contractual rights and geopolitical risks) tend to be higher for investments in the securities of issuers tied economically to emerging countries. The economies of emerging countries often depend &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;predominantly on only a few industries or commodities and often are more volatile than the economies of developed countries.&lt;/span&gt;</oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="S000005490_DerivativesandShortSalesRiskMember"
      id="x_7f4118a9-df6b-46e6-9948-e545a85d7e0e">&lt;span style="color:#000000;font-family:Times New Roman;font-size:8pt;"&gt;&#x25cf;&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-style:italic;"&gt;Derivatives and Short Sales Risk&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; &#x2013; The use of derivatives involves the risk that their value may not change as expected relative to changes in the value of the underlying assets, pools of assets, rates, currencies or indices. Derivatives also present other risks, including market risk, illiquidity risk, currency risk, credit risk, leveraging risk, commodities risk and counterparty risk. The market price of an option is affected by many factors, including changes in the market prices or dividend rates of underlying securities (or in the case of indices, the securities in such indices); the time remaining before expiration; changes in interest rates or exchange rates; and changes in the actual or perceived volatility of the relevant index or underlying securities. The Fund typically creates short investment exposure by selling securities short or by taking a derivative position in which the value of the derivative moves in the opposite direction from the price of an underlying asset, pool of assets, rate, currency or index. Specifically, the net asset value of the Fund&#x2019;s shares will be adversely affected if the securities or other assets that are the subject of the Fund&#x2019;s short exposures appreciate in value. The risk of loss associated with derivatives that provide short investment exposure and short sales of securities is theoretically unlimited.&lt;/span&gt;</oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="S000005490_FundofFundsRiskMember"
      id="x_5ee11633-cfe4-4203-98f7-278ce8adb6f4">&lt;span style="color:#000000;font-family:Times New Roman;font-size:8pt;"&gt;&#x25cf;&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-style:italic;"&gt;Fund of Funds Risk&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; &#x2013; The Fund is indirectly exposed to all of the risks of an investment in the underlying funds in which it invests, including the risk that those underlying funds will not perform as expected. The fees and expenses associated with an investment in the Fund are less predictable than those associated with an investment in funds that charge a fixed management fee.&lt;/span&gt;</oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="S000005490_SmallerCompanyRiskMember"
      id="x_498d0239-38a2-4c64-a303-9d6fe417f67f">&lt;span style="color:#000000;font-family:Times New Roman;font-size:8pt;"&gt;&#x25cf;&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-style:italic;"&gt;Smaller Company Risk&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; &#x2013; Smaller companies may have limited product lines, markets, or financial resources, lack the competitive strength of larger companies, have less experienced managers or depend on a few key employees. The securities of companies with smaller market capitalizations often are less widely held and trade less frequently and in lesser quantities, and their market prices often fluctuate more, than the securities of companies with larger market capitalizations.&lt;/span&gt;</oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="S000005490_CurrencyRiskMember"
      id="x_2ce411c4-35c0-4044-83f0-a0d0201916a6">&lt;span style="color:#000000;font-family:Times New Roman;font-size:8pt;"&gt;&#x25cf;&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-style:italic;"&gt;Currency Risk&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; &#x2013; Fluctuations in exchange rates can adversely affect the market value of the Fund&#x2019;s foreign currency holdings and investments denominated in foreign currencies.&lt;/span&gt;</oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="S000005490_LeveragingRiskMember"
      id="x_6c579f08-95b3-4838-8b09-d71287fbf699">&lt;span style="color:#000000;font-family:Times New Roman;font-size:8pt;"&gt;&#x25cf;&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-style:italic;"&gt;Leveraging Risk&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; &#x2013; The use of derivatives, short sales and securities lending can create leverage. Leverage increases the Fund&#x2019;s losses when the value of its investments (including derivatives) declines. In addition, the Fund&#x2019;s portfolio will be leveraged if it exercises its right to delay payment on a redemption and the value of the Fund&#x2019;s assets declines between the time a redemption request is treated as being received by the Fund and the time the Fund liquidates assets to fund that redemption.&lt;/span&gt;</oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="S000005490_CounterpartyRiskMember"
      id="f9a094d2-8b25-40bb-a418-07a1f76d5fab">&lt;span style="color:#000000;font-family:Times New Roman;font-size:8pt;"&gt;&#x25cf;&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-style:italic;"&gt;Counterparty Risk&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; &#x2013; The Fund runs the risk that the counterparty to a derivatives contract or a clearing member used by the Fund to hold a cleared derivatives contract is unable or unwilling to make timely settlement payments, return the Fund&#x2019;s collateral or otherwise honor its obligations.&lt;/span&gt;</oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="S000005490_MarketDisruptionandGeopoliticalRiskMember"
      id="b40b8b7d-e6ff-44f1-bbc7-b52e93c708b9">&lt;span style="color:#000000;font-family:Times New Roman;font-size:8pt;"&gt;&#x25cf;&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-style:italic;"&gt;Market Disruption and Geopolitical Risk&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; &#x2013; Geopolitical and other events (e.g., wars, pandemics, sanctions, terrorism, diplomatic tensions, dramatic changes in regulatory and/or foreign policy, cyberattacks, and rapid technological developments such as artificial intelligence) often disrupt securities markets and adversely affect the general economy or particular economies and markets. Those events, as well as other changes in non-U.S. and U.S. economic and political conditions, could exacerbate other risks or otherwise reduce the value of the Fund&#x2019;s investments.&lt;/span&gt;</oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="S000005490_FocusedInvestmentRiskMember"
      id="x_5b5953f3-eeba-450f-9c8b-1c7b7f863014">&lt;span style="color:#000000;font-family:Times New Roman;font-size:8pt;"&gt;&#x25cf;&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-style:italic;"&gt;Focused Investment Risk&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; &#x2013; Investments in countries, regions, asset classes, sectors, industries, currencies, or issuers that are subject to the same or similar risk factors and investments whose market prices are closely correlated are subject to higher overall risk than investments that are more diversified or whose market prices are not as closely correlated.&lt;/span&gt;</oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="S000005490_LargeTransactionsRiskMember"
      id="x_2679c948-3481-4e81-a387-044791b47e3e">&lt;span style="color:#000000;font-family:Times New Roman;font-size:8pt;"&gt;&#x25cf;&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-style:italic;"&gt;Large Transactions Risk&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; &#x2013; To the extent that a large number of shares of the Fund is held by a single shareholder (e.g., an institutional investor or another GMO Fund) or a group of shareholders with a common investment strategy (e.g., GMO asset allocation accounts), the Fund is subject to the risk that a redemption by (or caused by) that shareholder or group will require the Fund to sell investments at disadvantageous prices, disrupt the Fund&#x2019;s operations, lead to temporary overexposure to the Fund&#x2019;s intended investment program or force the Fund&#x2019;s liquidation. The Fund also may be subject to these effects when a number of shareholders collectively redeem or sell a large amount of Fund shares.&lt;/span&gt;</oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="S000005490_IlliquidityRiskMember"
      id="x_2194db18-2ace-4dab-b8be-480c6e96b1e2">&lt;span style="color:#000000;font-family:Times New Roman;font-size:8pt;"&gt;&#x25cf;&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-style:italic;"&gt;Illiquidity Risk&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; &#x2013; Low trading volume, lack of a market maker, large position size, or legal restrictions increase the risk that the Fund or an underlying fund is limited or prevented from selling particular securities or closing derivative positions at desirable prices at a particular time or at all.&lt;/span&gt;</oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="S000005490_MarketRiskFixedIncomeRiskMember"
      id="x_5e0050ea-6841-4e29-81c3-7f89c0578e65">&lt;span style="color:#000000;font-family:Times New Roman;font-size:8pt;"&gt;&#x25cf;&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-style:italic;"&gt;Market Risk &#x2013; Fixed Income&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; &#x2013; The market price of a fixed income investment can decline due to market-related factors, including rising interest or inflation rates and widening credit spreads, or decreased liquidity due, for example, to market uncertainty about the value of a fixed income investment (or class of fixed income investments).&lt;/span&gt;</oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="S000005490_CreditRiskMember"
      id="x_389cd992-9077-41a2-9dc7-7912c93feb35">&lt;span style="color:#000000;font-family:Times New Roman;font-size:8pt;"&gt;&#x25cf;&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-style:italic;"&gt;Credit Risk&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; &#x2013; The Fund runs the risk that the issuer or guarantor of a fixed income investment (including a sovereign or quasi-sovereign debt issuer) or the obligor of an obligation underlying an asset-backed security will be unable or unwilling to satisfy its obligation to pay principal and interest or otherwise to honor its obligations in a timely manner or at all. The market price of a fixed &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;margin-left:0.00%;"&gt;income investment will normally decline as a result of the failure of an issuer, guarantor, or obligor to meet its payment obligations or in anticipation of such a failure. Below investment grade investments (commonly referred to as high yield or &#x201c;junk&#x201d; bonds) have speculative characteristics and are subject to greater credit risk than other fixed income investments. Negative changes in economic conditions or other circumstances are more likely to impair the ability of issuers of below investment grade investments to make &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;principal and interest payments than issuers of investment grade investments.&lt;/span&gt;</oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="S000005490_ValueInvestingRiskMember"
      id="e99ac9e5-a9b2-4318-8181-0482a752fb8e">&lt;span style="color:#000000;font-family:Times New Roman;font-size:8pt;"&gt;&#x25cf;&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-style:italic;"&gt;Value Investing Risk&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; &#x2013; Issuers whose securities GMO believes are undervalued may not realize their business potential, may never be recognized by the market as being undervalued and/or may be appropriately priced notwithstanding GMO&#x2019;s assessment. These and other factors may cause the price of value stocks to decline, resulting in losses to the Fund.&lt;/span&gt;</oef:RiskTextBlock>
    <oef:BarChartAndPerformanceTableHeading
      contextRef="S000005490"
      id="c241b94c-0fa7-4603-a07d-e0ce5e4a4da7">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-weight:bold;"&gt;Performance&lt;/span&gt;</oef:BarChartAndPerformanceTableHeading>
    <oef:PerformanceNarrativeTextBlock
      contextRef="S000005490"
      id="x_71c8db1d-124a-4adc-85d5-07d3d853203f">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;margin-left:3.76%;"&gt;The bar chart and table below provide some indication of the risks of investing in the Fund by showing changes in the Fund&#x2019;s &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;annual total returns from year to year for the periods indicated and by comparing the Fund&#x2019;s average annual total returns for different calendar periods with those of the Fund&#x2019;s benchmark, a broad-based securities market index.&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; Share classes not shown would have &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;substantially similar annual returns to those below because all share classes invest in the same portfolio of securities. Annual returns vary among share classes to the extent that they bear different expenses. Share classes that bear higher expenses than the share classes shown below would have lower returns. &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;After-tax returns are calculated using the historical highest individual federal marginal income &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;tax rates and do not reflect the impact of state and local taxes.&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; Actual after-tax returns depend on your tax situation and may differ from &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;those shown. After-tax returns shown are not relevant if you are tax-exempt or if you hold your Fund shares through tax-advantaged arrangements (such as a 401(k) plan or individual retirement account). &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;After-tax returns are shown for Class III shares only; after-tax &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;returns for other classes will vary.&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; Updated performance information for the Fund is available at &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;www.gmo.com&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;. &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;Past performance (before and after taxes) is not an indication of future performance.&lt;/span&gt;</oef:PerformanceNarrativeTextBlock>
    <oef:PerformanceInformationIllustratesVariabilityOfReturns
      contextRef="S000005490"
      id="x_25e661fc-ea11-4113-b6ae-54f47d47b48d">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;margin-left:3.76%;"&gt;The bar chart and table below provide some indication of the risks of investing in the Fund by showing changes in the Fund&#x2019;s &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;annual total returns from year to year for the periods indicated and by comparing the Fund&#x2019;s average annual total returns for different calendar periods with those of the Fund&#x2019;s benchmark, a broad-based securities market index.&lt;/span&gt;</oef:PerformanceInformationIllustratesVariabilityOfReturns>
    <oef:PerformanceTableUsesHighestFederalRate
      contextRef="S000005490"
      id="f252499b-ab3e-4924-b268-9b9c742313f4">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;After-tax returns are calculated using the historical highest individual federal marginal income &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;tax rates and do not reflect the impact of state and local taxes.&lt;/span&gt;</oef:PerformanceTableUsesHighestFederalRate>
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      contextRef="S000005490"
      id="c2e14ad9-364b-4c26-b3ee-4787b800fbd1">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; Actual after-tax returns depend on your tax situation and may differ from &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;those shown. After-tax returns shown are not relevant if you are tax-exempt or if you hold your Fund shares through tax-advantaged arrangements (such as a 401(k) plan or individual retirement account). &lt;/span&gt;</oef:PerformanceTableNotRelevantToTaxDeferred>
    <oef:PerformanceTableOneClassOfAfterTaxShown
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      id="x_34ef5c5e-a19e-4d68-9ad6-20cd48bede45">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;After-tax returns are shown for Class III shares only; after-tax &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;returns for other classes will vary.&lt;/span&gt;</oef:PerformanceTableOneClassOfAfterTaxShown>
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      id="d03908a9-c6a4-4df9-93b8-0dfcde1e0519">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;www.gmo.com&lt;/span&gt;</oef:PerformanceAvailabilityWebSiteAddress>
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      contextRef="S000005490"
      id="x_76b92d3a-ba37-4223-8be7-57228aaad4bb">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;Past performance (before and after taxes) is not an indication of future performance.&lt;/span&gt;</oef:PerformancePastDoesNotIndicateFuture>
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      id="b8358181-ca89-4585-b247-c6a557e0224d">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-weight:bold;"&gt;Annual Total Returns/Class III Shares&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:6.5pt;font-weight:bold;position:relative;top:-2.75pt;"&gt;1&lt;/span&gt; &lt;br/&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;Years Ending December 31&lt;/span&gt;</oef:BarChartHeading>
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      id="x_1ca8fd26-9307-4b7e-af09-868c4ba6bf85">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;Highest Quarter:&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;17.63%&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;-sec-ix-hidden:x_6ddc3329-ed17-4594-89ab-25f528f16ef3"&gt;2Q 2020&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;Lowest Quarter:&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;-23.90%&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;-sec-ix-hidden:x_60768348-5ed6-4265-b349-e3246680808d"&gt;1Q 2020&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;Year-to-Date:&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;2.62%&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;As of&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;3/31/2025&lt;/span&gt;</oef:BarChartClosingTextBlock>
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      id="cde50002-1be2-4263-b5d8-a68a295fa6ee">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;Highest Quarter:&lt;/span&gt;</oef:HighestQuarterlyReturnLabel>
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      contextRef="S000005490_C000014938"
      decimals="4"
      id="x_2b265987-6738-48a6-a37f-7c6bde7e8233"
      unitRef="pure">0.1763</oef:BarChartHighestQuarterlyReturn>
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      id="x_46f63e94-d1d6-4aa0-9847-989b15ca91ca">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;Lowest Quarter:&lt;/span&gt;</oef:LowestQuarterlyReturnLabel>
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      contextRef="S000005490_C000014938"
      decimals="4"
      id="x_8ea9499b-3b50-4149-8220-5a5cce3464c6"
      unitRef="pure">-0.2390</oef:BarChartLowestQuarterlyReturn>
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      contextRef="S000005490_C000014938"
      id="c657ad2e-3ffa-46b8-8b48-809c8cb14ac5">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;Year-to-Date:&lt;/span&gt;</oef:YearToDateReturnLabel>
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      contextRef="S000005490_C000014938"
      decimals="4"
      id="ff70c15a-7bcd-4bc3-b168-65192c8c0db0"
      unitRef="pure">0.0262</oef:BarChartYearToDateReturn>
    <oef:BarChartYearToDateReturnDate
      contextRef="S000005490_C000014938"
      id="x_318ff066-077a-4727-83c9-7f925d508779">2025-03-31</oef:BarChartYearToDateReturnDate>
    <oef:PerformanceTableHeading
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      id="c341c1d9-4345-4290-848a-7c352e346114">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-weight:bold;"&gt;Average Annual Total Returns&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:6.5pt;font-weight:bold;position:relative;top:-2.75pt;"&gt;1&lt;/span&gt; &lt;br/&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;Periods Ending December 31, 2024&lt;/span&gt;</oef:PerformanceTableHeading>
    <oef:PerfInceptionDate
      contextRef="C000014938"
      id="x_4f46f9f7-003d-4396-ac04-8713ea64bf85">2005-06-16</oef:PerfInceptionDate>
    <oef:AvgAnnlRtrPct
      contextRef="C000014938_01Jan2024_31Dec2024"
      decimals="4"
      id="x_3510b319-b405-4c91-aeac-2ed1a5a9a120"
      unitRef="pure">0.1098</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000014938_01Jan2020_31Dec2024"
      decimals="4"
      id="ebc703a6-8e16-4864-9b22-0fcafe30f47b"
      unitRef="pure">0.0887</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000014938_01Jan2015_31Dec2024"
      decimals="4"
      id="x_134e8d19-2a39-4465-b2dd-3c9f1d5df26d"
      unitRef="pure">0.0802</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000014938_16Jun2005_31Dec2024"
      decimals="4"
      id="f9bd55d4-f8f4-4060-b34a-9049b1cfcbc5"
      unitRef="pure">0.0737</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000014938_AfterTaxesOnDistributionsMember_01Jan2024_31Dec2024"
      decimals="4"
      id="d50db74c-cf09-4591-98ee-26de3336327f"
      unitRef="pure">0.0931</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000014938_AfterTaxesOnDistributionsMember_01Jan2020_31Dec2024"
      decimals="4"
      id="x_250e74ac-9e0a-4fe5-b5bf-8101517e189a"
      unitRef="pure">0.0679</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000014938_AfterTaxesOnDistributionsMember_01Jan2015_31Dec2024"
      decimals="4"
      id="b7295541-1447-4441-9367-de8c78d543f4"
      unitRef="pure">0.0634</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000014938_AfterTaxesOnDistributionsMember_16Jun2005_31Dec2024"
      decimals="4"
      id="x_4f8e0894-aa7b-4efa-b296-46b22156c964"
      unitRef="pure">0.0595</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000014938_AfterTaxesOnDistributionsAndSalesMember_01Jan2024_31Dec2024"
      decimals="4"
      id="dee95010-d86b-4e3a-860e-3cdf90825979"
      unitRef="pure">0.0707</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000014938_AfterTaxesOnDistributionsAndSalesMember_01Jan2020_31Dec2024"
      decimals="4"
      id="x_065131cc-e4c0-452f-96f8-1efd3bc0f2d6"
      unitRef="pure">0.0642</oef:AvgAnnlRtrPct>
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      contextRef="C000014938_AfterTaxesOnDistributionsAndSalesMember_01Jan2015_31Dec2024"
      decimals="4"
      id="x_69c240e4-5fb3-4173-a367-9f928f971728"
      unitRef="pure">0.0601</oef:AvgAnnlRtrPct>
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      contextRef="C000014938_AfterTaxesOnDistributionsAndSalesMember_16Jun2005_31Dec2024"
      decimals="4"
      id="af667d09-1958-4fed-b3f8-e51245d96332"
      unitRef="pure">0.0575</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000014938_MSCIWorldIndexMember_01Jan2024_31Dec2024"
      decimals="4"
      id="b1b7edec-c531-43d9-b500-872bb8094b82"
      unitRef="pure">0.1867</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000014938_MSCIWorldIndexMember_01Jan2020_31Dec2024"
      decimals="4"
      id="bc850155-3052-41a6-b283-a1599abc4c4d"
      unitRef="pure">0.1116</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000014938_MSCIWorldIndexMember_01Jan2015_31Dec2024"
      decimals="4"
      id="b30d9a62-d88b-4a63-8531-f3b13447e75f"
      unitRef="pure">0.0995</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000014938_MSCIWorldIndexMember_16Jun2005_31Dec2024"
      decimals="4"
      id="x_38e30323-97ce-48c2-b985-7fe427e5961f"
      unitRef="pure">0.0816</oef:AvgAnnlRtrPct>
    <oef:ObjectiveHeading
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      id="x_1d370368-6cba-448c-ba14-db20d0013458">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-weight:bold;"&gt;Investment objective&lt;/span&gt;</oef:ObjectiveHeading>
    <oef:ObjectivePrimaryTextBlock
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      id="x_85975fa2-cb2b-434d-ae9b-1c1c6f383bb0">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;Total return greater than that of its benchmark, the MSCI ACWI.&lt;/span&gt;</oef:ObjectivePrimaryTextBlock>
    <oef:ExpenseHeading
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      id="x_3df6a4d1-a52b-4ca9-96f0-51ced1b2d772">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-weight:bold;"&gt;Fees and expenses&lt;/span&gt;</oef:ExpenseHeading>
    <oef:ExpenseNarrativeTextBlock
      contextRef="S000005488"
      id="daf3c172-16eb-4134-86a7-b1f84df3932e">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;margin-left:3.76%;"&gt;The table below describes the fees and expenses that you may bear for each class of shares if you buy, hold, and sell shares of the &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;Fund. You may pay other fees, such as brokerage commissions and other fees to financial intermediaries, which are not reflected in the table and example below.&lt;/span&gt;</oef:ExpenseNarrativeTextBlock>
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      id="a6a1d961-74f6-485b-9785-0099069badb4">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-weight:bold;"&gt;Annual Fund operating expenses &lt;/span&gt; &lt;br/&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;(expenses that you bear each year as a percentage of the value of your investment)&lt;/span&gt;</oef:OperatingExpensesCaption>
    <oef:ManagementFeesOverAssets
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      decimals="4"
      id="x_6391cd94-98c3-458d-aacf-dca0206a16b2"
      unitRef="pure">0.0000</oef:ManagementFeesOverAssets>
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      contextRef="S000005488_C000213379"
      decimals="4"
      id="x_487f205d-8949-474b-93c0-2252b5380de3"
      unitRef="pure">0.0000</oef:ManagementFeesOverAssets>
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      contextRef="S000005488_C000213378"
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      id="x_22696aa5-9a08-4c8e-8584-c137dcce24f6"
      unitRef="pure">0.0000</oef:ManagementFeesOverAssets>
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      decimals="4"
      id="x_46fe7288-b264-490b-9979-3f0cc85071f8"
      unitRef="pure">0.0004</oef:OtherExpensesOverAssets>
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      contextRef="S000005488_C000213379"
      decimals="4"
      id="x_16565565-7ea8-4803-9072-41d1a4b071c3"
      unitRef="pure">0.0004</oef:OtherExpensesOverAssets>
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      contextRef="S000005488_C000213378"
      decimals="4"
      id="aec28bdd-bb46-43ff-b146-421ea77c35c3"
      unitRef="pure">0.0022</oef:OtherExpensesOverAssets>
    <oef:AcquiredFundFeesAndExpensesOverAssets
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      id="c7d11a53-0580-4d7b-b919-b4675001d82b"
      unitRef="pure">0.0057</oef:AcquiredFundFeesAndExpensesOverAssets>
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      contextRef="S000005488_C000213379"
      decimals="4"
      id="x_33f511c5-38da-466f-94b5-4a760b669ca2"
      unitRef="pure">0.0057</oef:AcquiredFundFeesAndExpensesOverAssets>
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      contextRef="S000005488_C000213378"
      decimals="4"
      id="x_894697d8-dece-41d5-8196-8aa4c2908fd0"
      unitRef="pure">0.0057</oef:AcquiredFundFeesAndExpensesOverAssets>
    <oef:ExpensesOverAssets
      contextRef="S000005488_C000014936"
      decimals="4"
      id="x_29da1044-c9d6-438d-a36b-22818f151a31"
      unitRef="pure">0.0061</oef:ExpensesOverAssets>
    <oef:ExpensesOverAssets
      contextRef="S000005488_C000213379"
      decimals="4"
      id="b7f5de69-0862-45c7-9b97-e864c54142f9"
      unitRef="pure">0.0061</oef:ExpensesOverAssets>
    <oef:ExpensesOverAssets
      contextRef="S000005488_C000213378"
      decimals="4"
      id="eb5bf836-490b-48c1-ad6b-3855854892cc"
      unitRef="pure">0.0079</oef:ExpensesOverAssets>
    <oef:FeeWaiverOrReimbursementOverAssets
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      id="x_4672a1cb-fd03-405a-ba3d-2523452e8086"
      unitRef="pure">-0.0003</oef:FeeWaiverOrReimbursementOverAssets>
    <oef:FeeWaiverOrReimbursementOverAssets
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      id="f77ed5de-4810-4bda-89f5-8bd3889e1896">&lt;span style="color:#000000;font-family:Times New Roman;font-size:8pt;font-style:italic;"&gt;June 30, 2026&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:8pt;font-style:italic;"&gt;June 30, 2026&lt;/span&gt;</oef:FeeWaiverOrReimbursementOverAssetsDateOfTermination>
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      id="x_8f7aba28-ee3b-4fa2-979f-c76e5e423243">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-weight:bold;"&gt;Example&lt;/span&gt;</oef:ExpenseExampleHeading>
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      id="x_3e448384-c5c7-420f-8308-d01c86e86666">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;margin-left:3.76%;"&gt;This example is intended to help you compare the cost of investing in the Fund with the cost of investing in other funds. The &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;example assumes that you invest $10,000 in the Fund for the time periods indicated, regardless of whether or not you redeem your shares at the end of such periods. The example also assumes that your investment has a 5% return each year and that the Fund&#x2019;s operating expenses remain the same as those shown in the table. The one year amounts shown reflect the expense reimbursement noted in the expense table. Although your actual costs may be higher or lower, based on these assumptions your costs would be:&lt;/span&gt;</oef:ExpenseExampleNarrativeTextBlock>
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      decimals="INF"
      id="x_3cb23fd6-bcee-45de-84ef-79113fa663d0"
      unitRef="USD">59</oef:ExpenseExampleYear01>
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      decimals="INF"
      id="b8229203-e99a-45ee-b4cb-74f740f39e2f"
      unitRef="USD">192</oef:ExpenseExampleYear03>
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      contextRef="S000005488_C000014936"
      decimals="INF"
      id="x_5754fd45-7b8e-40d6-a1a0-13683d376df6"
      unitRef="USD">337</oef:ExpenseExampleYear05>
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      contextRef="S000005488_C000014936"
      decimals="INF"
      id="x_618f164f-aca2-4989-a8c5-776b72f92d88"
      unitRef="USD">759</oef:ExpenseExampleYear10>
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      contextRef="S000005488_C000213379"
      decimals="INF"
      id="x_80529820-5dab-46fe-be63-2c1ccba866dc"
      unitRef="USD">59</oef:ExpenseExampleYear01>
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      contextRef="S000005488_C000213379"
      decimals="INF"
      id="b3e37c50-2aa0-4909-a2c1-b3f715937f7e"
      unitRef="USD">192</oef:ExpenseExampleYear03>
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      contextRef="S000005488_C000213379"
      decimals="INF"
      id="x_0c9ad8ab-e73b-430a-bf95-14deb375bd10"
      unitRef="USD">337</oef:ExpenseExampleYear05>
    <oef:ExpenseExampleYear10
      contextRef="S000005488_C000213379"
      decimals="INF"
      id="x_1c399c95-6838-49ef-b325-66c7f5653e93"
      unitRef="USD">759</oef:ExpenseExampleYear10>
    <oef:ExpenseExampleYear01
      contextRef="S000005488_C000213378"
      decimals="INF"
      id="x_22ce5edc-dd14-4dd1-81ac-39d75dd385fc"
      unitRef="USD">78</oef:ExpenseExampleYear01>
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      contextRef="S000005488_C000213378"
      decimals="INF"
      id="c74057b6-a6f9-46f4-897c-1b08e1bf1c75"
      unitRef="USD">249</oef:ExpenseExampleYear03>
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      contextRef="S000005488_C000213378"
      decimals="INF"
      id="x_7cd1d97b-32b0-455a-ab85-fc5eb94db837"
      unitRef="USD">436</oef:ExpenseExampleYear05>
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      contextRef="S000005488_C000213378"
      decimals="INF"
      id="x_60d0e3e2-fafd-4726-b93f-52f28e53a204"
      unitRef="USD">975</oef:ExpenseExampleYear10>
    <oef:PortfolioTurnoverHeading
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      id="x_19545569-efc6-4752-9b24-6bdf7b19b303">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-weight:bold;"&gt;Portfolio turnover&lt;/span&gt;</oef:PortfolioTurnoverHeading>
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      id="x_19476d9c-51c8-46ab-8209-450267050c7a">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;margin-left:3.76%;"&gt;The Fund pays transaction costs, such as commissions, when it buys and sells securities. A higher portfolio turnover rate may &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;result in higher transaction costs and, for holders of Fund shares subject to U.S. taxes, higher income taxes. These transaction costs, which are not reflected in Annual Fund operating expenses or in the Example, affect the Fund&#x2019;s performance.&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; During its fiscal year &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;ended February 28, 2025, the Fund&#x2019;s portfolio turnover rate (excluding short-term investments) was &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;20&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;% of the average value of its portfolio securities.&lt;/span&gt;</oef:PortfolioTurnoverTextBlock>
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    <oef:StrategyHeading
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      id="x_0a85853f-b8ab-43d0-8c2c-851c2d62aa82">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-weight:bold;"&gt;Principal investment strategies&lt;/span&gt;</oef:StrategyHeading>
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      id="x_92f88959-6b31-4ca4-aa44-9cdd39871c1d">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;margin-left:3.76%;"&gt;The Fund is a fund of funds and invests primarily in equities traded in U.S. and non-U.S. markets (including emerging markets) &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;through its investment in the Equity Funds and GMO-managed exchange-traded funds (collectively, the &#x201c;underlying GMO Funds&#x201d;) (see &#x201c;Additional Information About the Funds&#x2019; Investment Strategies, Risks, and Expenses &#x2014; Asset Allocation Funds&#x201d;). The Fund also may invest directly in securities (including other underlying funds) and derivatives.&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;margin-left:3.76%;"&gt;GMO uses its quantitative multi-year forecasts of returns among asset classes, together with its assessment of the relative risks of &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;asset classes, to determine the asset classes in which the Fund invests and how much the Fund invests in each asset class. An important component of those forecasts is GMO&#x2019;s expectation that valuations ultimately revert to their fundamental fair (or intrinsic) value over a complete market cycle. GMO changes the Fund&#x2019;s asset class exposures in response to changes in GMO&#x2019;s investment outlook and its assessment of market valuations and may use redemptions or purchases of Fund shares to rebalance the Fund&#x2019;s investments. The factors GMO considers and investment methods GMO uses can change over time.&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;margin-left:3.76%;"&gt;Under normal circumstances, the Fund invests (including through its investment in the underlying GMO Funds) at least 80% of its &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;assets in equities (see &#x201c;Name Policies&#x201d;).&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;margin-left:3.76%;"&gt;The Fund may invest in securities of companies of any market capitalization. In addition, the Fund may lend its portfolio &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;securities.&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;margin-left:3.76%;"&gt;The Fund also may invest in U.S. Treasury Fund, in money market funds unaffiliated with GMO, and directly in the types of &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;investments typically held by money market funds.&lt;/span&gt;</oef:StrategyNarrativeTextBlock>
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      id="x_155e731f-7099-4a62-a57c-ed01b62494cb">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;Many factors can affect this value, and you may lose money by investing in the Fund.&lt;/span&gt;</oef:RiskTextBlock>
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      contextRef="S000005488_RiskNotInsuredDepositoryInstitutionMember"
      id="b7ee746c-9faf-4373-85ad-3e19828fc035">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;An investment in the Fund is not a bank deposit and is not insured or guaranteed by the FDIC or &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;any government agency.&lt;/span&gt;</oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="S000005488_MarketRiskEquitiesRiskMember"
      id="x_10d43619-7847-43b0-a71c-2b0db5808b28">&lt;span style="color:#000000;font-family:Times New Roman;font-size:8pt;"&gt;&#x25cf;&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-style:italic;"&gt;Market Risk &#x2013; Equities &#x2013; &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;The market price of an equity in the Fund&#x2019;s portfolio may decline due to factors affecting the issuer or its industry or the economy and equity markets generally. If the Fund purchases an equity for less than its fundamental fair (or intrinsic) value as assessed by GMO, the Fund runs the risk that the market price of the equity will not appreciate or will decline (for example, if GMO&#x2019;s assessment proves to be incorrect or the market fails to recognize the equity&#x2019;s intrinsic value). The Fund also may purchase equities that typically trade at higher multiples of current earnings than other securities, and the market prices of these equities often are more sensitive to changes in future earnings expectations and interest rates than the market prices of equities trading at lower multiples. Declines in stock market prices generally are likely to reduce the net asset value of the Fund&#x2019;s shares.&lt;/span&gt;</oef:RiskTextBlock>
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      contextRef="S000005488_ManagementandOperationalRiskMember"
      id="x_28793190-a832-4342-af72-3f018414e102">&lt;span style="color:#000000;font-family:Times New Roman;font-size:8pt;"&gt;&#x25cf;&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-style:italic;"&gt;Management and Operational Risk&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; &#x2013; The Fund runs the risk that GMO&#x2019;s investment techniques will fail to produce intended results.&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;GMO uses quantitative models as part of its investment process. GMO&#x2019;s models may not accurately predict future market movements. In addition, GMO&#x2019;s models rely on assumptions and data that are subject to limitations (e.g., inaccuracies, staleness) that could adversely affect their predictive value.&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; The Fund also runs the risk that GMO&#x2019;s assessment of an investment, including a &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;security&#x2019;s fundamental fair (or intrinsic) value, is wrong or that deficiencies in GMO&#x2019;s or another service provider&#x2019;s internal systems or controls will cause losses for the Fund or impair Fund operations.&lt;/span&gt;</oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="S000005488_NonUSInvestmentRiskMember"
      id="x_52b88f5f-54ba-4b14-9272-c850b2f3f434">&lt;span style="color:#000000;font-family:Times New Roman;font-size:8pt;"&gt;&#x25cf;&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-style:italic;"&gt;Non-U.S. Investment Risk&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; &#x2013; The market prices of many non-U.S. securities fluctuate more than those of U.S. securities. Many non-U.S. securities markets are less stable, smaller, less liquid, and less regulated than U.S. securities markets, and the cost of trading in those markets often is higher than in U.S. securities markets. In addition, non-U.S. securities issuers often are not subject to as much regulation as U.S. issuers, and the reporting, recordkeeping, accounting, custody, and auditing standards to which those issuers are subject often are not as rigorous as U.S. standards. In addition, the Fund is subject to taxation by countries other than the United States, including potentially on a retroactive basis, on (i) capital gains it realizes or dividends, interest, or other amounts it realizes or accrues in respect of non-U.S. investments; (ii) transactions in those investments; and (iii) repatriation of proceeds generated from the sale or other disposition of those investments.&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; Also, the Fund needs a license to invest directly in securities &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;traded in many non-U.S. securities markets, and the Fund is subject to the risk that its license is terminated or suspended. In some non-U.S. securities markets, prevailing custody and trade settlement practices (e.g., the requirement to pay for securities prior to receipt) expose the Fund to credit and other risks. Further, adverse changes in investment regulations, capital requirements or exchange controls could adversely affect the value of the Fund&#x2019;s investments. The risks above (such as substantial price fluctuations and market instability, illiquidity and lack of regulation) and other risks (e.g., nationalization, expropriation or other confiscation of assets of non-U.S. issuers, difficulties enforcing legal judgments or contractual rights and geopolitical risks) tend to be higher for investments in the securities of issuers tied economically to emerging countries. The economies of emerging countries often depend predominantly on only a few industries or commodities and often are more volatile than the economies of developed countries.&lt;/span&gt;</oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="S000005488_DerivativesandShortSalesRiskMember"
      id="x_95442feb-037b-457c-a8cb-a4bb0eb229dd">&lt;span style="color:#000000;font-family:Times New Roman;font-size:8pt;"&gt;&#x25cf;&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-style:italic;"&gt;Derivatives and Short Sales Risk&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; &#x2013; The use of derivatives involves the risk that their value may not change as expected relative to changes in the value of the underlying assets, pools of assets, rates, currencies or indices. Derivatives also present other risks, including market risk, illiquidity risk, currency risk, credit risk, leveraging risk, commodities risk and counterparty risk. The market &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;margin-left:0.00%;"&gt;price of an option is affected by many factors, including changes in the market prices or dividend rates of underlying securities (or in the case of indices, the securities in such indices); the time remaining before expiration; changes in interest rates or exchange rates; and changes in the actual or perceived volatility of the relevant index or underlying securities. The Fund typically creates short investment exposure by selling securities short or by taking a derivative position in which the value of the derivative moves in the opposite direction from the price of an underlying asset, pool of assets, rate, currency or index. Specifically, the net asset value of the Fund&#x2019;s shares will be adversely affected if the securities or other assets that are the subject of the Fund&#x2019;s short exposures appreciate in value. The risk of loss associated with derivatives that provide short investment exposure and short sales of securities &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;is theoretically unlimited.&lt;/span&gt;</oef:RiskTextBlock>
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      contextRef="S000005488_FundofFundsRiskMember"
      id="x_64c86b94-6a67-4421-891a-f3e443eab520">&lt;span style="color:#000000;font-family:Times New Roman;font-size:8pt;"&gt;&#x25cf;&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-style:italic;"&gt;Fund of Funds Risk&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; &#x2013; The Fund is indirectly exposed to all of the risks of an investment in the underlying funds in which it invests, including the risk that those underlying funds will not perform as expected. The fees and expenses associated with an investment in the Fund are less predictable than those associated with an investment in funds that charge a fixed management fee.&lt;/span&gt;</oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="S000005488_SmallerCompanyRiskMember"
      id="x_61f2de23-d414-46e2-a2b5-cd4e114625b3">&lt;span style="color:#000000;font-family:Times New Roman;font-size:8pt;"&gt;&#x25cf;&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-style:italic;"&gt;Smaller Company Risk&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; &#x2013; Smaller companies may have limited product lines, markets, or financial resources, lack the competitive strength of larger companies, have less experienced managers or depend on a few key employees. The securities of companies with smaller market capitalizations often are less widely held and trade less frequently and in lesser quantities, and their market prices often fluctuate more, than the securities of companies with larger market capitalizations.&lt;/span&gt;</oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="S000005488_CurrencyRiskMember"
      id="x_4dbd2f8f-1c3d-448d-98bb-d0dc54ef4126">&lt;span style="color:#000000;font-family:Times New Roman;font-size:8pt;"&gt;&#x25cf;&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-style:italic;"&gt;Currency Risk&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; &#x2013; Fluctuations in exchange rates can adversely affect the market value of the Fund&#x2019;s foreign currency holdings and investments denominated in foreign currencies.&lt;/span&gt;</oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="S000005488_LeveragingRiskMember"
      id="x_85507b99-23c0-44d3-a8f5-79cc0c0c12af">&lt;span style="color:#000000;font-family:Times New Roman;font-size:8pt;"&gt;&#x25cf;&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-style:italic;"&gt;Leveraging Risk&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; &#x2013; The use of derivatives, short sales and securities lending can create leverage. Leverage increases the Fund&#x2019;s losses when the value of its investments (including derivatives) declines. In addition, the Fund&#x2019;s portfolio will be leveraged if it exercises its right to delay payment on a redemption and the value of the Fund&#x2019;s assets declines between the time a redemption request is treated as being received by the Fund and the time the Fund liquidates assets to fund that redemption.&lt;/span&gt;</oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="S000005488_CounterpartyRiskMember"
      id="x_1e49c4b0-11df-4743-b837-8c100eb8a0fc">&lt;span style="color:#000000;font-family:Times New Roman;font-size:8pt;"&gt;&#x25cf;&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-style:italic;"&gt;Counterparty Risk&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; &#x2013; The Fund runs the risk that the counterparty to a derivatives contract or a clearing member used by the Fund to hold a cleared derivatives contract is unable or unwilling to make timely settlement payments, return the Fund&#x2019;s collateral or otherwise honor its obligations.&lt;/span&gt;</oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="S000005488_MarketDisruptionandGeopoliticalRiskMember"
      id="x_0ea1ff02-12ec-41d6-ab29-e82a9326c66b">&lt;span style="color:#000000;font-family:Times New Roman;font-size:8pt;"&gt;&#x25cf;&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-style:italic;"&gt;Market Disruption and Geopolitical Risk&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; &#x2013; Geopolitical and other events (e.g., wars, pandemics, sanctions, terrorism, diplomatic tensions, dramatic changes in regulatory and/or foreign policy, cyberattacks, and rapid technological developments such as artificial intelligence) often disrupt securities markets and adversely affect the general economy or particular economies and markets. Those events, as well as other changes in non-U.S. and U.S. economic and political conditions, could exacerbate other risks or otherwise reduce the value of the Fund&#x2019;s investments.&lt;/span&gt;</oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="S000005488_FocusedInvestmentRiskMember"
      id="x_5f733fbe-1962-4521-b731-d169a6b547d9">&lt;span style="color:#000000;font-family:Times New Roman;font-size:8pt;"&gt;&#x25cf;&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-style:italic;"&gt;Focused Investment Risk&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; &#x2013; Investments in countries, regions, asset classes, sectors, industries, currencies, or issuers that are subject to the same or similar risk factors and investments whose market prices are closely correlated are subject to higher overall risk than investments that are more diversified or whose market prices are not as closely correlated.&lt;/span&gt;</oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="S000005488_LargeTransactionsRiskMember"
      id="cc21e3dc-6188-4972-9381-670ebddec739">&lt;span style="color:#000000;font-family:Times New Roman;font-size:8pt;"&gt;&#x25cf;&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-style:italic;"&gt;Large Transactions Risk&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; &#x2013; To the extent that a large number of shares of the Fund is held by a single shareholder (e.g., an institutional investor or another GMO Fund) or a group of shareholders with a common investment strategy (e.g., GMO asset allocation accounts), the Fund is subject to the risk that a redemption by (or caused by) that shareholder or group will require the Fund to sell investments at disadvantageous prices, disrupt the Fund&#x2019;s operations, lead to temporary overexposure to the Fund&#x2019;s intended investment program or force the Fund&#x2019;s liquidation. The Fund also may be subject to these effects when a number of shareholders collectively redeem or sell a large amount of Fund shares.&lt;/span&gt;</oef:RiskTextBlock>
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      contextRef="S000005488_IlliquidityRiskMember"
      id="x_1df88d9f-6571-4c21-92be-20de92b655de">&lt;span style="color:#000000;font-family:Times New Roman;font-size:8pt;"&gt;&#x25cf;&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-style:italic;"&gt;Illiquidity Risk&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; &#x2013; Low trading volume, lack of a market maker, large position size, or legal restrictions increase the risk that the Fund or an underlying fund is limited or prevented from selling particular securities or closing derivative positions at desirable prices at a particular time or at all.&lt;/span&gt;</oef:RiskTextBlock>
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      id="e6eba541-60c9-4178-980a-48c9f53ea79c">&lt;span style="color:#000000;font-family:Times New Roman;font-size:8pt;"&gt;&#x25cf;&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-style:italic;"&gt;Market Risk &#x2013; Fixed Income&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; &#x2013; The market price of a fixed income investment can decline due to market-related factors, including rising interest or inflation rates and widening credit spreads, or decreased liquidity due, for example, to market uncertainty about the value of a fixed income investment (or class of fixed income investments).&lt;/span&gt;</oef:RiskTextBlock>
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      id="b3deabc7-5bd4-4b85-8398-6e97061cd11f">&lt;span style="color:#000000;font-family:Times New Roman;font-size:8pt;"&gt;&#x25cf;&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-style:italic;"&gt;Credit Risk&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; &#x2013; The Fund runs the risk that the issuer or guarantor of a fixed income investment (including a sovereign or quasi-sovereign debt issuer) or the obligor of an obligation underlying an asset-backed security will be unable or unwilling to satisfy its obligation to pay principal and interest or otherwise to honor its obligations in a timely manner or at all. The market price of a fixed income investment will normally decline as a result of the failure of an issuer, guarantor, or obligor to meet its payment obligations or in anticipation of such a failure. Below investment grade investments (commonly referred to as high yield or &#x201c;junk&#x201d; bonds) have speculative characteristics and are subject to greater credit risk than other fixed income investments. Negative changes in economic conditions or other circumstances are more likely to impair the ability of issuers of below investment grade investments to make principal and interest payments than issuers of investment grade investments.&lt;/span&gt;</oef:RiskTextBlock>
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      id="x_01a19490-75f6-4400-94c7-c59e4c12d5e5">&lt;span style="color:#000000;font-family:Times New Roman;font-size:8pt;"&gt;&#x25cf;&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-style:italic;"&gt;Value Investing Risk&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; &#x2013; Issuers whose securities GMO believes are undervalued may not realize their business potential, may never be recognized by the market as being undervalued and/or may be appropriately priced notwithstanding GMO&#x2019;s assessment. These and other factors may cause the price of value stocks to decline, resulting in losses to the Fund.&lt;/span&gt;</oef:RiskTextBlock>
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      id="fe8c7e72-3182-40c9-916a-cff03d270e9b">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-weight:bold;"&gt;Performance&lt;/span&gt;</oef:BarChartAndPerformanceTableHeading>
    <oef:PerformanceNarrativeTextBlock
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      id="c1d32919-bf89-4774-b516-1ca5682a810d">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;margin-left:3.76%;"&gt;The bar chart and table below provide some indication of the risks of investing in the Fund by showing changes in the Fund&#x2019;s &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;annual total returns from year to year for the periods indicated and by comparing the Fund&#x2019;s average annual total returns for different calendar periods with those of the Fund's benchmark (a broad-based securities market index) and a composite index computed by GMO that tracks historical changes in the Fund's benchmark over time.&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; Annual returns vary among share classes to the extent that they bear &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;different expenses. Share classes that bear higher expenses than the share classes shown below would have lower returns. &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;After-tax &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;returns are calculated using the historical highest individual federal marginal income tax rates and do not reflect the impact of state and local taxes.&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; Actual after-tax returns depend on your tax situation and may differ from those shown. After-tax returns shown are not &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;relevant if you are tax-exempt or if you hold your Fund shares through tax-advantaged arrangements (such as a 401(k) plan or individual retirement account). &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;After-tax returns are shown for Class III shares only; after-tax returns for other classes will &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;vary.&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;&#160;&#160;Updated performance information for the Fund is available at &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;www.gmo.com&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;. &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;Past performance (before and after taxes) is not an indication of future performance.&lt;/span&gt;</oef:PerformanceNarrativeTextBlock>
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      id="x_6307fe52-76d0-4d68-b0c5-f451e55ba7d9">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;margin-left:3.76%;"&gt;The bar chart and table below provide some indication of the risks of investing in the Fund by showing changes in the Fund&#x2019;s &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;annual total returns from year to year for the periods indicated and by comparing the Fund&#x2019;s average annual total returns for different calendar periods with those of the Fund's benchmark (a broad-based securities market index) and a composite index computed by GMO that tracks historical changes in the Fund's benchmark over time.&lt;/span&gt;</oef:PerformanceInformationIllustratesVariabilityOfReturns>
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      id="ae1083e9-5795-49d8-b27a-ebe0ff3f78ea">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;After-tax &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;returns are calculated using the historical highest individual federal marginal income tax rates and do not reflect the impact of state and local taxes.&lt;/span&gt;</oef:PerformanceTableUsesHighestFederalRate>
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      id="a353a58f-4a66-4b91-be73-f38f8832ab73">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; Actual after-tax returns depend on your tax situation and may differ from those shown. After-tax returns shown are not &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;relevant if you are tax-exempt or if you hold your Fund shares through tax-advantaged arrangements (such as a 401(k) plan or individual retirement account). &lt;/span&gt;</oef:PerformanceTableNotRelevantToTaxDeferred>
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      id="x_6076ab39-1eeb-4fb2-978f-be488c2db881">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;After-tax returns are shown for Class III shares only; after-tax returns for other classes will &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;vary.&lt;/span&gt;</oef:PerformanceTableOneClassOfAfterTaxShown>
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      id="x_7ad90da9-ae5d-412d-b8aa-f188ef3cc7e6">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;www.gmo.com&lt;/span&gt;</oef:PerformanceAvailabilityWebSiteAddress>
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      id="x_88bda30c-8900-4cd1-a72d-559ac412036a">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;Past performance (before and after taxes) is not an indication of future performance.&lt;/span&gt;</oef:PerformancePastDoesNotIndicateFuture>
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      id="x_17fc7eb1-d292-4f8b-860e-71c04e24d834">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-weight:bold;"&gt;Annual Total Returns/Class III Shares&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:6.5pt;font-weight:bold;position:relative;top:-2.75pt;"&gt;1&lt;/span&gt; &lt;br/&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;Years Ending December 31&lt;/span&gt;</oef:BarChartHeading>
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      id="ad59ad6f-1f2c-4cf2-93f3-f36a6663c9b3">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;Highest Quarter:&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;17.13%&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;-sec-ix-hidden:b347c64a-b6dd-4484-9567-7ec75e57c8e4"&gt;2Q 2020&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;Lowest Quarter:&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;-24.20%&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;-sec-ix-hidden:d321f5aa-48d6-4d33-b1a5-d0429eaafecd"&gt;1Q 2020&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;Year-to-Date:&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;2.74%&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;As of&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;3/31/2025&lt;/span&gt;</oef:BarChartClosingTextBlock>
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      id="eb3445e5-8a96-4d54-bff1-9c9fa8c340aa">2025-03-31</oef:BarChartYearToDateReturnDate>
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      id="b62a7217-45f8-4607-a512-dd9b57a246f5">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-weight:bold;"&gt;Average Annual Total Returns&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:6.5pt;font-weight:bold;position:relative;top:-2.75pt;"&gt;1&lt;/span&gt; &lt;br/&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;Periods Ending December 31, 2024&lt;/span&gt;</oef:PerformanceTableHeading>
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      id="x_6141598a-470b-41c0-bbdf-987204691b4e"
      unitRef="pure">0.1177</oef:AvgAnnlRtrPct>
    <oef:PerfInceptionDate
      contextRef="C000213378"
      id="x_233dedb8-15bc-405e-aced-a835e4b40e9b">2020-08-17</oef:PerfInceptionDate>
    <oef:AvgAnnlRtrPct
      contextRef="C000213378_01Jan2024_31Dec2024"
      decimals="4"
      id="d5ebcfa1-a192-4904-976a-48a207dcaf7e"
      unitRef="pure">0.0939</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000213378_17Aug2020_31Dec2024"
      decimals="4"
      id="x_97808f08-5cae-4ffe-8086-29d13d5e3ea0"
      unitRef="pure">0.0873</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000213378_MSCIACWIPlusMember_01Jan2024_31Dec2024"
      decimals="4"
      id="d35c26d1-6ba6-4d13-9133-e8dfb87f5c7e"
      unitRef="pure">0.1749</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000213378_MSCIACWIPlusMember_17Aug2020_31Dec2024"
      decimals="4"
      id="x_02f839bf-c4b7-414a-bd11-3c319ad20080"
      unitRef="pure">0.1100</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000213378_MSCIACWIMember_01Jan2024_31Dec2024"
      decimals="4"
      id="ad8e661e-5d60-4930-b044-d6edaa2907e7"
      unitRef="pure">0.1749</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000213378_MSCIACWIMember_17Aug2020_31Dec2024"
      decimals="4"
      id="x_3d302b95-eba7-4a05-af48-6cb73c0a9fd8"
      unitRef="pure">0.1100</oef:AvgAnnlRtrPct>
    <oef:ObjectiveHeading
      contextRef="S000012211"
      id="x_54f97193-8cc7-4d11-bc6b-4636df4033c4">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-weight:bold;"&gt;Investment objective&lt;/span&gt;</oef:ObjectiveHeading>
    <oef:ObjectivePrimaryTextBlock
      contextRef="S000012211"
      id="x_9d376e79-8033-47a6-9a08-ed924e3a2444">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;Total return greater than that of its benchmark, the MSCI EAFE Index.&lt;/span&gt;</oef:ObjectivePrimaryTextBlock>
    <oef:ExpenseHeading
      contextRef="S000012211"
      id="x_0a92f111-e4b6-4467-804c-578d9614b595">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-weight:bold;"&gt;Fees and expenses&lt;/span&gt;</oef:ExpenseHeading>
    <oef:ExpenseNarrativeTextBlock
      contextRef="S000012211"
      id="x_39154086-19c7-46d8-bab3-0835aa7218f1">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;margin-left:3.76%;"&gt;The table below describes the fees and expenses that you may bear for each class of shares if you buy, hold, and sell shares of the &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;Fund. You may pay other fees, such as brokerage commissions and other fees to financial intermediaries, which are not reflected in the table and example below.&lt;/span&gt;</oef:ExpenseNarrativeTextBlock>
    <oef:OperatingExpensesCaption
      contextRef="S000012211"
      id="x_89543a94-a770-4d8b-9100-0c97f55f5d90">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-weight:bold;"&gt;Annual Fund operating expenses &lt;/span&gt; &lt;br/&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;(expenses that you bear each year as a percentage of the value of your investment)&lt;/span&gt;</oef:OperatingExpensesCaption>
    <oef:ManagementFeesOverAssets
      contextRef="S000012211_C000033342"
      decimals="4"
      id="x_74ee7d90-4f77-4b3b-9112-fbec0fdf8412"
      unitRef="pure">0.0000</oef:ManagementFeesOverAssets>
    <oef:ManagementFeesOverAssets
      contextRef="S000012211_C000213387"
      decimals="4"
      id="cce099ea-8991-4d4a-80e6-f8de0a5c5701"
      unitRef="pure">0.0000</oef:ManagementFeesOverAssets>
    <oef:ManagementFeesOverAssets
      contextRef="S000012211_C000213386"
      decimals="4"
      id="x_1786aeff-bc47-4003-a6cf-0eb47a79e53d"
      unitRef="pure">0.0000</oef:ManagementFeesOverAssets>
    <oef:OtherExpensesOverAssets
      contextRef="S000012211_C000033342"
      decimals="4"
      id="x_758713f6-5d28-4024-b325-ed033b1a5f76"
      unitRef="pure">0.0006</oef:OtherExpensesOverAssets>
    <oef:OtherExpensesOverAssets
      contextRef="S000012211_C000213387"
      decimals="4"
      id="x_84060268-982b-4d1f-b819-41d962a61aca"
      unitRef="pure">0.0006</oef:OtherExpensesOverAssets>
    <oef:OtherExpensesOverAssets
      contextRef="S000012211_C000213386"
      decimals="4"
      id="x_3581d7a9-c985-436e-856b-5000b931da25"
      unitRef="pure">0.0018</oef:OtherExpensesOverAssets>
    <oef:AcquiredFundFeesAndExpensesOverAssets
      contextRef="S000012211_C000033342"
      decimals="4"
      id="x_7f017b1e-0195-4773-86ed-b1719bb1968c"
      unitRef="pure">0.0063</oef:AcquiredFundFeesAndExpensesOverAssets>
    <oef:AcquiredFundFeesAndExpensesOverAssets
      contextRef="S000012211_C000213387"
      decimals="4"
      id="x_84e81bde-14a6-4c8b-bdaf-1a65c61104ed"
      unitRef="pure">0.0063</oef:AcquiredFundFeesAndExpensesOverAssets>
    <oef:AcquiredFundFeesAndExpensesOverAssets
      contextRef="S000012211_C000213386"
      decimals="4"
      id="x_6188ba0f-90a1-43fe-aae7-882858fd1a3a"
      unitRef="pure">0.0063</oef:AcquiredFundFeesAndExpensesOverAssets>
    <oef:ExpensesOverAssets
      contextRef="S000012211_C000033342"
      decimals="4"
      id="x_5aa36c4d-96d1-45cf-bde9-bbea81ddecbf"
      unitRef="pure">0.0069</oef:ExpensesOverAssets>
    <oef:ExpensesOverAssets
      contextRef="S000012211_C000213387"
      decimals="4"
      id="x_416e72f0-7657-4df3-812d-5d2ecd1105ad"
      unitRef="pure">0.0069</oef:ExpensesOverAssets>
    <oef:ExpensesOverAssets
      contextRef="S000012211_C000213386"
      decimals="4"
      id="x_1d794297-68af-451b-accc-216561dd5dd8"
      unitRef="pure">0.0081</oef:ExpensesOverAssets>
    <oef:FeeWaiverOrReimbursementOverAssets
      contextRef="S000012211_C000033342"
      decimals="4"
      id="x_14cfd303-b3a3-4316-a57a-22c31cd9ba47"
      unitRef="pure">-0.0005</oef:FeeWaiverOrReimbursementOverAssets>
    <oef:FeeWaiverOrReimbursementOverAssets
      contextRef="S000012211_C000213387"
      decimals="4"
      id="x_848fe2fd-0fd2-4565-ac3d-75e5fada13ca"
      unitRef="pure">-0.0005</oef:FeeWaiverOrReimbursementOverAssets>
    <oef:FeeWaiverOrReimbursementOverAssets
      contextRef="S000012211_C000213386"
      decimals="4"
      id="x_521bfac9-f5fc-4bf2-8fd7-14452782ba8d"
      unitRef="pure">-0.0005</oef:FeeWaiverOrReimbursementOverAssets>
    <oef:NetExpensesOverAssets
      contextRef="S000012211_C000033342"
      decimals="4"
      id="f6bce87b-f6f2-45c3-ab57-a3beca1aae4c"
      unitRef="pure">0.0064</oef:NetExpensesOverAssets>
    <oef:NetExpensesOverAssets
      contextRef="S000012211_C000213387"
      decimals="4"
      id="x_8a67605f-2492-47a4-af30-f611c7664df9"
      unitRef="pure">0.0064</oef:NetExpensesOverAssets>
    <oef:NetExpensesOverAssets
      contextRef="S000012211_C000213386"
      decimals="4"
      id="ef5d387a-ce9a-43cb-bbc6-f0d7435a1800"
      unitRef="pure">0.0076</oef:NetExpensesOverAssets>
    <oef:FeeWaiverOrReimbursementOverAssetsDateOfTermination
      contextRef="S000012211"
      id="x_63c577d9-7ee8-4cc8-a853-73de5119f9bd">&lt;span style="color:#000000;font-family:Times New Roman;font-size:8pt;font-style:italic;"&gt;June 30, 2026&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:8pt;font-style:italic;"&gt;June 30, 2026&lt;/span&gt;</oef:FeeWaiverOrReimbursementOverAssetsDateOfTermination>
    <oef:ExpenseExampleHeading
      contextRef="S000012211"
      id="fa2fb179-4e74-4fcb-8432-d15fff4cece8">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-weight:bold;"&gt;Example&lt;/span&gt;</oef:ExpenseExampleHeading>
    <oef:ExpenseExampleNarrativeTextBlock
      contextRef="S000012211"
      id="f819d913-1566-4f38-8321-60ba85447d87">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;margin-left:3.76%;"&gt;This example is intended to help you compare the cost of investing in the Fund with the cost of investing in other funds. The &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;example assumes that you invest $10,000 in the Fund for the time periods indicated, regardless of whether or not you redeem your shares at the end of such periods. The example also assumes that your investment has a 5% return each year and that the Fund&#x2019;s operating expenses remain the same as those shown in the table. The one year amounts shown reflect the expense reimbursement noted in the expense table. Although your actual costs may be higher or lower, based on these assumptions your costs would be:&lt;/span&gt;</oef:ExpenseExampleNarrativeTextBlock>
    <oef:ExpenseExampleYear01
      contextRef="S000012211_C000033342"
      decimals="INF"
      id="c3a81143-d60f-46f7-8fc0-8e45365026df"
      unitRef="USD">65</oef:ExpenseExampleYear01>
    <oef:ExpenseExampleYear03
      contextRef="S000012211_C000033342"
      decimals="INF"
      id="b888e32d-82f5-419d-98af-1df55c56e32c"
      unitRef="USD">216</oef:ExpenseExampleYear03>
    <oef:ExpenseExampleYear05
      contextRef="S000012211_C000033342"
      decimals="INF"
      id="x_720764a4-0bc0-4340-8e7f-6fef346ee1c5"
      unitRef="USD">379</oef:ExpenseExampleYear05>
    <oef:ExpenseExampleYear10
      contextRef="S000012211_C000033342"
      decimals="INF"
      id="x_76ec4d5b-e8f7-47c0-a846-9f6277203923"
      unitRef="USD">854</oef:ExpenseExampleYear10>
    <oef:ExpenseExampleYear01
      contextRef="S000012211_C000213387"
      decimals="INF"
      id="x_51b1ab63-a72d-42c3-a4b5-a32d09b4edaf"
      unitRef="USD">65</oef:ExpenseExampleYear01>
    <oef:ExpenseExampleYear03
      contextRef="S000012211_C000213387"
      decimals="INF"
      id="ab423d29-5fc4-4849-b40a-fad5e6f10799"
      unitRef="USD">216</oef:ExpenseExampleYear03>
    <oef:ExpenseExampleYear05
      contextRef="S000012211_C000213387"
      decimals="INF"
      id="x_4df6e06e-14d7-47f5-afdb-2a48dcbc5c3c"
      unitRef="USD">379</oef:ExpenseExampleYear05>
    <oef:ExpenseExampleYear10
      contextRef="S000012211_C000213387"
      decimals="INF"
      id="ffe95e20-7b9d-449e-a156-f6109114a228"
      unitRef="USD">854</oef:ExpenseExampleYear10>
    <oef:ExpenseExampleYear01
      contextRef="S000012211_C000213386"
      decimals="INF"
      id="x_53c83009-391a-43d4-91a0-1a48ccd8f4fe"
      unitRef="USD">78</oef:ExpenseExampleYear01>
    <oef:ExpenseExampleYear03
      contextRef="S000012211_C000213386"
      decimals="INF"
      id="x_2e022a0e-a17c-4d8a-91ad-f53655ddab5d"
      unitRef="USD">254</oef:ExpenseExampleYear03>
    <oef:ExpenseExampleYear05
      contextRef="S000012211_C000213386"
      decimals="INF"
      id="feb08c58-fd44-41f1-854a-85365cb6866f"
      unitRef="USD">445</oef:ExpenseExampleYear05>
    <oef:ExpenseExampleYear10
      contextRef="S000012211_C000213386"
      decimals="INF"
      id="x_4719c142-c792-4259-ba41-a7b18ee037c9"
      unitRef="USD">997</oef:ExpenseExampleYear10>
    <oef:PortfolioTurnoverHeading
      contextRef="S000012211"
      id="ce4cb14d-e1f5-4625-9d78-66d27663915a">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-weight:bold;"&gt;Portfolio turnover&lt;/span&gt;</oef:PortfolioTurnoverHeading>
    <oef:PortfolioTurnoverTextBlock
      contextRef="S000012211"
      id="x_8f53b001-eefc-40bd-86d9-b0a513fdc317">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;margin-left:3.76%;"&gt;The Fund pays transaction costs, such as commissions, when it buys and sells securities. A higher portfolio turnover rate may &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;result in higher transaction costs and, for holders of Fund shares subject to U.S. taxes, higher income taxes. These transaction costs, which are not reflected in Annual Fund operating expenses or in the Example, affect the Fund&#x2019;s performance.&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; During its fiscal year &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;ended February 28, 2025, the Fund&#x2019;s portfolio turnover rate (excluding short-term investments) was &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;11&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;% of the average value of its portfolio securities.&lt;/span&gt;</oef:PortfolioTurnoverTextBlock>
    <oef:PortfolioTurnoverRate
      contextRef="S000012211"
      decimals="4"
      id="ec224346-71c9-4230-9ed4-5d1c8dc92301"
      unitRef="pure">0.11</oef:PortfolioTurnoverRate>
    <oef:StrategyHeading
      contextRef="S000012211"
      id="fa3ca1ee-283f-48bb-a1ba-3b3d15f92a68">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-weight:bold;"&gt;Principal investment strategies&lt;/span&gt;</oef:StrategyHeading>
    <oef:StrategyNarrativeTextBlock
      contextRef="S000012211"
      id="x_46d5d6b4-c107-4d50-a2c5-f7312406fa05">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;margin-left:3.76%;"&gt;The Fund is a fund of funds and invests primarily in equities traded in non-U.S. markets (including emerging markets) through its &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;investment in Equity Funds and GMO-managed exchange-traded funds (collectively, the &#x201c;underlying GMO Funds&#x201d;) (see &#x201c;Additional Information About the Funds&#x2019; Investment Strategies, Risks, and Expenses &#x2014; Asset Allocation Funds&#x201d;). The Fund also may invest directly in securities (including other underlying funds) and derivatives.&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;margin-left:3.76%;"&gt;GMO uses its quantitative multi-year forecasts of returns among asset classes, together with its assessment of the relative risks of &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;asset classes, to determine the asset classes in which the Fund invests and how much the Fund invests in each asset class. An important component of those forecasts is GMO&#x2019;s expectation that valuations ultimately revert to their fundamental fair (or intrinsic) value over a complete market cycle. GMO changes the Fund&#x2019;s asset class exposures in response to changes in GMO&#x2019;s investment outlook and its assessment of market valuations and may use redemptions or purchases of Fund shares to rebalance the Fund&#x2019;s investments. The factors GMO considers and investment methods GMO uses can change over time. Under normal circumstances, the Fund invests (including through its investment in the underlying GMO Funds) at least 80% of its assets in equities (see &#x201c;Name Policies&#x201d;). In addition, under normal circumstances, the Fund invests (including through its investment in the underlying GMO Funds) at least 80% of its assets in equities tied economically to developed markets (see &#x201c;Name Policies&#x201d;). The term &#x201c;developed markets&#x201d; means those countries included in the MSCI World Index, a global developed markets equity index, and countries with similar characteristics (e.g., countries that have sustained economic development, sufficient liquidity for listed companies and accessible markets). The Fund also may invest in equities tied economically to emerging markets (which are not part of the Fund&#x2019;s benchmark), but those investments typically will represent 10% or less of the Fund&#x2019;s net assets measured at the time of purchase. &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;margin-left:3.76%;"&gt;The Fund may invest in securities of companies of any market capitalization. In addition, the Fund may lend its portfolio &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;securities.&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;margin-left:3.76%;"&gt;The Fund also may invest in U.S. Treasury Fund, in money market funds unaffiliated with GMO, and directly in the types of &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;investments typically held by money market funds.&lt;/span&gt;</oef:StrategyNarrativeTextBlock>
    <oef:RiskTextBlock
      contextRef="S000012211_RiskLoseMoneyMember"
      id="x_94224ddc-6801-4687-b59f-82421887ef39">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;Many factors can affect this value, and you may lose money by investing in the Fund.&lt;/span&gt;</oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="S000012211_RiskNotInsuredDepositoryInstitutionMember"
      id="x_42bd412c-1af0-49fc-ba9c-3151963382bb">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;An investment in the Fund is not a bank deposit and is not insured or guaranteed by the FDIC or &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;any government agency.&lt;/span&gt;</oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="S000012211_MarketRiskEquitiesRiskMember"
      id="cd34bc8b-5faa-433f-8a05-b6065feccc1d">&lt;span style="color:#000000;font-family:Times New Roman;font-size:8pt;"&gt;&#x25cf;&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-style:italic;"&gt;Market Risk &#x2013; Equities &#x2013; &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;The market price of an equity in the Fund&#x2019;s portfolio may decline due to factors affecting the issuer or its industry or the economy and equity markets generally. If the Fund purchases an equity for less than its fundamental fair (or intrinsic) value as assessed by GMO, the Fund runs the risk that the market price of the equity will not appreciate or will decline (for example, if GMO&#x2019;s assessment proves to be incorrect or the market fails to recognize the equity&#x2019;s intrinsic value). The Fund also may purchase equities that typically trade at higher multiples of current earnings than other securities, and the market prices of these equities often are more sensitive to changes in future earnings expectations and interest rates than the market prices of equities trading at lower multiples. Declines in stock market prices generally are likely to reduce the net asset value of the Fund&#x2019;s shares.&lt;/span&gt;</oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="S000012211_NonUSInvestmentRiskMember"
      id="x_8a29d799-779f-456e-a3d9-5caa8914893f">&lt;span style="color:#000000;font-family:Times New Roman;font-size:8pt;"&gt;&#x25cf;&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-style:italic;"&gt;Non-U.S. Investment Risk&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; &#x2013; The market prices of many non-U.S. securities fluctuate more than those of U.S. securities. Many non-U.S. securities markets are less stable, smaller, less liquid, and less regulated than U.S. securities markets, and the cost of trading in those markets often is higher than in U.S. securities markets. In addition, non-U.S. securities issuers often are not subject to as much regulation as U.S. issuers, and the reporting, recordkeeping, accounting, custody, and auditing standards to which those issuers are subject often are not as rigorous as U.S. standards. In addition, the Fund is subject to taxation by countries other than the United States, including potentially on a retroactive basis, on (i) capital gains it realizes or dividends, interest, or other amounts it realizes or accrues in respect of non-U.S. investments; (ii) transactions in those investments; and (iii) repatriation of proceeds generated from the sale or other disposition of those investments.&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; Also, the Fund needs a license to invest directly in securities &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;traded in many non-U.S. securities markets, and the Fund is subject to the risk that its license is terminated or suspended. In some non-U.S. securities markets, prevailing custody and trade settlement practices (e.g., the requirement to pay for securities prior to receipt) expose the Fund to credit and other risks. Further, adverse changes in investment regulations, capital requirements or exchange controls could adversely affect the value of the Fund&#x2019;s investments. The risks above (such as substantial price fluctuations and market instability, illiquidity and lack of regulation) and other risks (e.g., nationalization, expropriation or other confiscation of assets of non-U.S. issuers, difficulties enforcing legal judgments or contractual rights and geopolitical risks) tend to be higher for investments in the securities of issuers tied economically to emerging countries. The economies of emerging countries often depend predominantly on only a few industries or commodities and often are more volatile than the economies of developed countries.&lt;/span&gt;</oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="S000012211_ManagementandOperationalRiskMember"
      id="x_11d4ecef-9c73-4d2a-a49f-fb2b93e21249">&lt;span style="color:#000000;font-family:Times New Roman;font-size:8pt;"&gt;&#x25cf;&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-style:italic;"&gt;Management and Operational Risk&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; &#x2013; The Fund runs the risk that GMO&#x2019;s investment techniques will fail to produce intended results.&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;GMO uses quantitative models as part of its investment process. GMO&#x2019;s models may not accurately predict future market movements. In addition, GMO&#x2019;s models rely on assumptions and data that are subject to limitations (e.g., inaccuracies, staleness) that could adversely affect their predictive value.&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; The Fund also runs the risk that GMO&#x2019;s assessment of an investment, including a &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;security&#x2019;s fundamental fair (or intrinsic) value, is wrong or that deficiencies in GMO&#x2019;s or another service provider&#x2019;s internal systems or controls will cause losses for the Fund or impair Fund operations.&lt;/span&gt;</oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="S000012211_CurrencyRiskMember"
      id="df9624b4-041a-4579-989f-8f91b1615687">&lt;span style="color:#000000;font-family:Times New Roman;font-size:8pt;"&gt;&#x25cf;&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-style:italic;"&gt;Currency Risk&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; &#x2013; Fluctuations in exchange rates can adversely affect the market value of the Fund&#x2019;s foreign currency holdings and investments denominated in foreign currencies.&lt;/span&gt;</oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="S000012211_DerivativesandShortSalesRiskMember"
      id="e25746c6-1585-42c8-9f5f-484877972002">&lt;span style="color:#000000;font-family:Times New Roman;font-size:8pt;"&gt;&#x25cf;&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-style:italic;"&gt;Derivatives and Short Sales Risk&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; &#x2013; The use of derivatives involves the risk that their value may not change as expected relative to changes in the value of the underlying assets, pools of assets, rates, currencies or indices. Derivatives also present other risks, including market risk, illiquidity risk, currency risk, credit risk, leveraging risk, commodities risk and counterparty risk. The market price of an option is affected by many factors, including changes in the market prices or dividend rates of underlying securities (or in the case of indices, the securities in such indices); the time remaining before expiration; changes in interest rates or exchange rates; and changes in the actual or perceived volatility of the relevant index or underlying securities. The Fund typically creates short investment exposure by selling securities short or by taking a derivative position in which the value of the derivative moves in the opposite direction from the price of an underlying asset, pool of assets, rate, currency or index. Specifically, the net asset value of the Fund&#x2019;s shares will be adversely affected if the securities or other assets that are the subject of the Fund&#x2019;s short exposures appreciate in value. The risk of loss associated with derivatives that provide short investment exposure and short sales of securities is theoretically unlimited.&lt;/span&gt;</oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="S000012211_FundofFundsRiskMember"
      id="f0f36cdc-7f26-45cb-a9a1-5d09c7cd3ede">&lt;span style="color:#000000;font-family:Times New Roman;font-size:8pt;"&gt;&#x25cf;&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-style:italic;"&gt;Fund of Funds Risk&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; &#x2013; The Fund is indirectly exposed to all of the risks of an investment in the underlying funds in which it invests, including the risk that those underlying funds will not perform as expected. The fees and expenses associated with an investment in the Fund are less predictable than those associated with an investment in funds that charge a fixed management fee.&lt;/span&gt;</oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="S000012211_SmallerCompanyRiskMember"
      id="x_947fd7aa-a72c-41df-a970-647f46fcd6dc">&lt;span style="color:#000000;font-family:Times New Roman;font-size:8pt;"&gt;&#x25cf;&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-style:italic;"&gt;Smaller Company Risk&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; &#x2013; Smaller companies may have limited product lines, markets, or financial resources, lack the competitive strength of larger companies, have less experienced managers or depend on a few key employees. The securities of companies with smaller market capitalizations often are less widely held and trade less frequently and in lesser quantities, and their market prices often fluctuate more, than the securities of companies with larger market capitalizations.&lt;/span&gt;</oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="S000012211_LeveragingRiskMember"
      id="x_83c77bd5-6f67-465e-8205-34ee7595bb16">&lt;span style="color:#000000;font-family:Times New Roman;font-size:8pt;"&gt;&#x25cf;&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-style:italic;"&gt;Leveraging Risk&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; &#x2013; The use of derivatives, short sales and securities lending can create leverage. Leverage increases the Fund&#x2019;s losses when the value of its investments (including derivatives) declines. In addition, the Fund&#x2019;s portfolio will be leveraged if it exercises its right to delay payment on a redemption and the value of the Fund&#x2019;s assets declines between the time a redemption request is treated as being received by the Fund and the time the Fund liquidates assets to fund that redemption.&lt;/span&gt;</oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="S000012211_CounterpartyRiskMember"
      id="a55f44f3-2ead-4058-9ee6-683960c5f611">&lt;span style="color:#000000;font-family:Times New Roman;font-size:8pt;"&gt;&#x25cf;&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-style:italic;"&gt;Counterparty Risk&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; &#x2013; The Fund runs the risk that the counterparty to a derivatives contract or a clearing member used by the Fund to hold a cleared derivatives contract is unable or unwilling to make timely settlement payments, return the Fund&#x2019;s collateral or otherwise honor its obligations.&lt;/span&gt;</oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="S000012211_MarketDisruptionandGeopoliticalRiskMember"
      id="x_98517baa-258d-4ce5-8c74-d19b0e0f7bc3">&lt;span style="color:#000000;font-family:Times New Roman;font-size:8pt;"&gt;&#x25cf;&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-style:italic;"&gt;Market Disruption and Geopolitical Risk&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; &#x2013; Geopolitical and other events (e.g., wars, pandemics, sanctions, terrorism, diplomatic tensions, dramatic changes in regulatory and/or foreign policy, cyberattacks, and rapid technological developments such as artificial intelligence) often disrupt securities markets and adversely affect the general economy or particular economies and markets. Those events, as well as other changes in non-U.S. and U.S. economic and political conditions, could exacerbate other risks or otherwise reduce the value of the Fund&#x2019;s investments.&lt;/span&gt;</oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="S000012211_FocusedInvestmentRiskMember"
      id="x_0e9489c7-950c-4d6b-a56a-22a0744e8ed1">&lt;span style="color:#000000;font-family:Times New Roman;font-size:8pt;"&gt;&#x25cf;&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-style:italic;"&gt;Focused Investment Risk&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; &#x2013; Investments in countries, regions, asset classes, sectors, industries, currencies, or issuers that are subject to the same or similar risk factors and investments whose market prices are closely correlated are subject to higher overall risk than investments that are more diversified or whose market prices are not as closely correlated.&lt;/span&gt;</oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="S000012211_LargeTransactionsRiskMember"
      id="x_83b9cb42-8724-452a-9cb3-2b90b6b2563c">&lt;span style="color:#000000;font-family:Times New Roman;font-size:8pt;"&gt;&#x25cf;&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-style:italic;"&gt;Large Transactions Risk&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; &#x2013; To the extent that a large number of shares of the Fund is held by a single shareholder (e.g., an institutional investor or another GMO Fund) or a group of shareholders with a common investment strategy (e.g., GMO asset allocation accounts), the Fund is subject to the risk that a redemption by (or caused by) that shareholder or group will require the Fund to sell investments at disadvantageous prices, disrupt the Fund&#x2019;s operations, lead to temporary overexposure to the Fund&#x2019;s intended investment program or force the Fund&#x2019;s liquidation. The Fund also may be subject to these effects when a number of shareholders collectively redeem or sell a large amount of Fund shares.&lt;/span&gt;</oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="S000012211_IlliquidityRiskMember"
      id="bac38e3e-2d9b-428c-8170-bfcd0aebbe1a">&lt;span style="color:#000000;font-family:Times New Roman;font-size:8pt;"&gt;&#x25cf;&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-style:italic;"&gt;Illiquidity Risk&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; &#x2013; Low trading volume, lack of a market maker, large position size, or legal restrictions increase the risk that the Fund or an underlying fund is limited or prevented from selling particular securities or closing derivative positions at desirable prices at a particular time or at all.&lt;/span&gt;</oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="S000012211_MarketRiskFixedIncomeRiskMember"
      id="x_318f2db4-afd5-4297-9599-9207d19d077a">&lt;span style="color:#000000;font-family:Times New Roman;font-size:8pt;"&gt;&#x25cf;&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-style:italic;"&gt;Market Risk &#x2013; Fixed Income&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; &#x2013; The market price of a fixed income investment can decline due to market-related factors, including rising interest or inflation rates and widening credit spreads, or decreased liquidity due, for example, to market uncertainty about the value of a fixed income investment (or class of fixed income investments).&lt;/span&gt;</oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="S000012211_CreditRiskMember"
      id="x_66b23b10-b699-4df7-8225-3cb8415953c4">&lt;span style="color:#000000;font-family:Times New Roman;font-size:8pt;"&gt;&#x25cf;&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-style:italic;"&gt;Credit Risk&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; &#x2013; The Fund runs the risk that the issuer or guarantor of a fixed income investment (including a sovereign or quasi-sovereign debt issuer) or the obligor of an obligation underlying an asset-backed security will be unable or unwilling to satisfy its obligation to pay principal and interest or otherwise to honor its obligations in a timely manner or at all. The market price of a fixed income investment will normally decline as a result of the failure of an issuer, guarantor, or obligor to meet its payment obligations or in anticipation of such a failure. Below investment grade investments (commonly referred to as high yield or &#x201c;junk&#x201d; bonds) have &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;margin-left:0.00%;"&gt;speculative characteristics and are subject to greater credit risk than other fixed income investments. Negative changes in economic conditions or other circumstances are more likely to impair the ability of issuers of below investment grade investments to make &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;principal and interest payments than issuers of investment grade investments.&lt;/span&gt;</oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="S000012211_ValueInvestingRiskMember"
      id="x_84c12f63-5cbd-46b3-8b13-d32eddc7e78a">&lt;span style="color:#000000;font-family:Times New Roman;font-size:8pt;"&gt;&#x25cf;&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-style:italic;"&gt;Value Investing Risk&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; &#x2013; Issuers whose securities GMO believes are undervalued may not realize their business potential, may never be recognized by the market as being undervalued and/or may be appropriately priced notwithstanding GMO&#x2019;s assessment. These and other factors may cause the price of value stocks to decline, resulting in losses to the Fund.&lt;/span&gt;</oef:RiskTextBlock>
    <oef:BarChartAndPerformanceTableHeading
      contextRef="S000012211"
      id="ab71677d-3ccd-4ff6-88d4-002284312cf3">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-weight:bold;"&gt;Performance&lt;/span&gt;</oef:BarChartAndPerformanceTableHeading>
    <oef:PerformanceNarrativeTextBlock
      contextRef="S000012211"
      id="x_59184de0-5025-4768-9250-9fd6f4ec9c68">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;margin-left:3.76%;"&gt;The bar chart and table below provide some indication of the risks of investing in the Fund by showing changes in the Fund&#x2019;s &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;annual total returns from year to year for the periods indicated and by comparing the Fund&#x2019;s average annual total returns for different calendar periods with those of the Fund&#x2019;s benchmark, a broad-based securities market index.&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; Share classes not shown would have &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;substantially similar annual returns to those below because all share classes invest in the same portfolio of securities. Annual returns vary among share classes to the extent that they bear different expenses. Share classes that bear higher expenses than the share classes shown below would have lower returns. &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;After-tax returns are calculated using the historical highest individual federal marginal income &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;tax rates and do not reflect the impact of state and local taxes.&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; Actual after-tax returns depend on your tax situation and may differ from &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;those shown. After-tax returns shown are not relevant if you are tax-exempt or if you hold your Fund shares through tax-advantaged arrangements (such as a 401(k) plan or individual retirement account). &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;After-tax returns are shown for Class III shares only; after-tax &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;returns for other classes will vary.&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; Updated performance information for the Fund is available at &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;www.gmo.com&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;. &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;Past performance (before and after taxes) is not an indication of future performance.&lt;/span&gt;</oef:PerformanceNarrativeTextBlock>
    <oef:PerformanceInformationIllustratesVariabilityOfReturns
      contextRef="S000012211"
      id="x_2808f0cc-4dbe-424a-94da-db4a99c17e20">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;margin-left:3.76%;"&gt;The bar chart and table below provide some indication of the risks of investing in the Fund by showing changes in the Fund&#x2019;s &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;annual total returns from year to year for the periods indicated and by comparing the Fund&#x2019;s average annual total returns for different calendar periods with those of the Fund&#x2019;s benchmark, a broad-based securities market index.&lt;/span&gt;</oef:PerformanceInformationIllustratesVariabilityOfReturns>
    <oef:PerformanceTableUsesHighestFederalRate
      contextRef="S000012211"
      id="x_868c7a2c-72b1-484a-a923-291d26597457">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;After-tax returns are calculated using the historical highest individual federal marginal income &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;tax rates and do not reflect the impact of state and local taxes.&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; Actual after-tax returns depend on your tax situation and may differ from &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;those shown. After-tax returns shown are not relevant if you are tax-exempt or if you hold your Fund shares through tax-advantaged arrangements (such as a 401(k) plan or individual retirement account). &lt;/span&gt;</oef:PerformanceTableUsesHighestFederalRate>
    <oef:PerformanceTableOneClassOfAfterTaxShown
      contextRef="S000012211"
      id="x_4a9ccd7b-a347-4013-aa02-302f0042dd36">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;After-tax returns are shown for Class III shares only; after-tax &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;returns for other classes will vary.&lt;/span&gt;</oef:PerformanceTableOneClassOfAfterTaxShown>
    <oef:PerformanceAvailabilityWebSiteAddress
      contextRef="S000012211"
      id="x_26e27731-ef28-4454-903e-37b1ec667cc2">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;www.gmo.com&lt;/span&gt;</oef:PerformanceAvailabilityWebSiteAddress>
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      contextRef="S000012211"
      id="e61b6d5a-488f-4cce-9759-7da62867708d">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;Past performance (before and after taxes) is not an indication of future performance.&lt;/span&gt;</oef:PerformancePastDoesNotIndicateFuture>
    <oef:BarChartHeading
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      id="be92ea0a-812e-4182-8198-fbaf276b80a9">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-weight:bold;"&gt;Annual Total Returns/Class III Shares&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:6.5pt;font-weight:bold;position:relative;top:-2.75pt;"&gt;1&lt;/span&gt; &lt;br/&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;Years Ending December 31&lt;/span&gt;</oef:BarChartHeading>
    <oef:BarChartClosingTextBlock
      contextRef="S000012211"
      id="x_4d25206b-da0e-4d22-9eb4-a806c3c1dc18">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;Highest Quarter:&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;17.89%&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;-sec-ix-hidden:x_0313dda3-d805-4917-b663-122cadb68aa2"&gt;4Q 2022&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;Lowest Quarter:&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;-23.99%&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;-sec-ix-hidden:c1faab60-3cf8-4b11-a340-3a14b415f1e1"&gt;1Q 2020&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;Year-to-Date:&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;10.06%&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;As of&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;3/31/2025&lt;/span&gt;</oef:BarChartClosingTextBlock>
    <oef:HighestQuarterlyReturnLabel
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      id="x_1e1f586c-cdb4-4183-bea9-6fc515fbd7de">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;Highest Quarter:&lt;/span&gt;</oef:HighestQuarterlyReturnLabel>
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      contextRef="S000012211_C000033342"
      decimals="4"
      id="d754f586-9967-415c-8783-51de51286b8c"
      unitRef="pure">0.1789</oef:BarChartHighestQuarterlyReturn>
    <oef:LowestQuarterlyReturnLabel
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      id="x_29b1e6a4-c164-4c99-a4aa-2d8d7249be30">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;Lowest Quarter:&lt;/span&gt;</oef:LowestQuarterlyReturnLabel>
    <oef:BarChartLowestQuarterlyReturn
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      decimals="4"
      id="x_84a9a9e6-6847-466d-a531-916c5c050bff"
      unitRef="pure">-0.2399</oef:BarChartLowestQuarterlyReturn>
    <oef:YearToDateReturnLabel
      contextRef="S000012211_C000033342"
      id="x_7bed0c78-264a-40d9-a990-b78edc0fe0d0">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;Year-to-Date:&lt;/span&gt;</oef:YearToDateReturnLabel>
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      contextRef="S000012211_C000033342"
      decimals="4"
      id="x_3b608b50-9f00-4a0e-906c-147ddb9cf319"
      unitRef="pure">0.1006</oef:BarChartYearToDateReturn>
    <oef:BarChartYearToDateReturnDate
      contextRef="S000012211_C000033342"
      id="x_2bdcc93f-4479-441c-ba8c-d50a9491ee76">2025-03-31</oef:BarChartYearToDateReturnDate>
    <oef:PerformanceTableHeading
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      id="x_2bab9284-266c-4979-abcd-3aac07d46c87">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-weight:bold;"&gt;Average Annual Total Returns&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:6.5pt;font-weight:bold;position:relative;top:-2.75pt;"&gt;1&lt;/span&gt; &lt;br/&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;Periods Ending December 31, 2024&lt;/span&gt;</oef:PerformanceTableHeading>
    <oef:PerfInceptionDate
      contextRef="C000033342"
      id="db2051e7-9cb7-4203-aedd-0a689dd082b1">2006-06-05</oef:PerfInceptionDate>
    <oef:AvgAnnlRtrPct
      contextRef="C000033342_01Jan2024_31Dec2024"
      decimals="4"
      id="x_1eb8898f-32e3-4b42-aa9c-3812f88a78e7"
      unitRef="pure">0.1064</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000033342_01Jan2020_31Dec2024"
      decimals="4"
      id="eacb4add-4058-4006-8011-c7a79c4a005f"
      unitRef="pure">0.0695</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000033342_01Jan2015_31Dec2024"
      decimals="4"
      id="ec9a244a-8cf8-4973-bad3-29ce7f5a2919"
      unitRef="pure">0.0547</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000033342_05Jun2006_31Dec2024"
      decimals="4"
      id="x_4c1a5dd7-86c9-45a2-a413-c4969f26d5e9"
      unitRef="pure">0.0444</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000033342_AfterTaxesOnDistributionsMember_01Jan2024_31Dec2024"
      decimals="4"
      id="b800288c-3b45-4fd7-9939-2bdc180f5b46"
      unitRef="pure">0.0928</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000033342_AfterTaxesOnDistributionsMember_01Jan2020_31Dec2024"
      decimals="4"
      id="a15cbf4d-1e57-4a52-baf9-43ac9400333f"
      unitRef="pure">0.0550</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000033342_AfterTaxesOnDistributionsMember_01Jan2015_31Dec2024"
      decimals="4"
      id="x_9b0f3244-2eb5-44f8-b2b7-2faa913f2978"
      unitRef="pure">0.0445</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000033342_AfterTaxesOnDistributionsMember_05Jun2006_31Dec2024"
      decimals="4"
      id="af970efd-4342-4557-837f-fe339b8586a6"
      unitRef="pure">0.0339</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000033342_AfterTaxesOnDistributionsAndSalesMember_01Jan2024_31Dec2024"
      decimals="4"
      id="dde0e6b1-9d1e-48e3-850e-fc10aa6f1828"
      unitRef="pure">0.0712</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000033342_AfterTaxesOnDistributionsAndSalesMember_01Jan2020_31Dec2024"
      decimals="4"
      id="x_5fda9897-8596-4a1c-bd86-452a74d86aca"
      unitRef="pure">0.0517</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000033342_AfterTaxesOnDistributionsAndSalesMember_01Jan2015_31Dec2024"
      decimals="4"
      id="e57f388b-b407-49dc-839a-baeb376f1163"
      unitRef="pure">0.0424</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000033342_AfterTaxesOnDistributionsAndSalesMember_05Jun2006_31Dec2024"
      decimals="4"
      id="eabe3605-8602-4513-a889-2e6b485cee31"
      unitRef="pure">0.0344</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000033342_MSCIEAFEIndexMember_01Jan2024_31Dec2024"
      decimals="4"
      id="af55558e-b22d-42a9-a383-bf91010ae9db"
      unitRef="pure">0.0382</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000033342_MSCIEAFEIndexMember_01Jan2020_31Dec2024"
      decimals="4"
      id="a458811e-1ff6-4834-bb26-49fd73414111"
      unitRef="pure">0.0473</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000033342_MSCIEAFEIndexMember_01Jan2015_31Dec2024"
      decimals="4"
      id="x_86d5e5de-f7d8-4e0c-835a-7145b6f2c0b3"
      unitRef="pure">0.0520</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000033342_MSCIEAFEIndexMember_05Jun2006_31Dec2024"
      decimals="4"
      id="x_3fc14037-add0-4569-bf10-98da5ae24546"
      unitRef="pure">0.0387</oef:AvgAnnlRtrPct>
    <oef:PerfInceptionDate
      contextRef="C000213387"
      id="x_1009f843-94af-4505-887c-78ae8eb6a3c5">2021-01-22</oef:PerfInceptionDate>
    <oef:AvgAnnlRtrPct
      contextRef="C000213387_01Jan2024_31Dec2024"
      decimals="4"
      id="x_236f14d9-3eef-453e-9ef6-2c468f3e7802"
      unitRef="pure">0.1064</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000213387_22Jan2021_31Dec2024"
      decimals="4"
      id="x_7c7c387a-b30e-4743-9e26-96c070d5fd01"
      unitRef="pure">0.0594</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000213387_MSCIEAFEIndexMember_01Jan2024_31Dec2024"
      decimals="4"
      id="x_12c1deb0-dbc9-4148-bc70-15093cbb9777"
      unitRef="pure">0.0382</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000213387_MSCIEAFEIndexMember_22Jan2021_31Dec2024"
      decimals="4"
      id="da9229f7-6373-4b16-a738-1bfe8c3be7b7"
      unitRef="pure">0.0339</oef:AvgAnnlRtrPct>
    <oef:ObjectiveHeading
      contextRef="S000005486"
      id="c8dc2339-8122-4698-860b-48e187f00d63">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-weight:bold;"&gt;Investment objective&lt;/span&gt;</oef:ObjectiveHeading>
    <oef:ObjectivePrimaryTextBlock
      contextRef="S000005486"
      id="ca46bf45-c26f-4bcc-bb85-86443ab19ed8">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;Total return greater than that of its benchmark, the MSCI ACWI ex USA.&lt;/span&gt;</oef:ObjectivePrimaryTextBlock>
    <oef:ExpenseHeading
      contextRef="S000005486"
      id="b82ce722-0ca1-48df-8d29-658d29d3fdc8">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-weight:bold;"&gt;Fees and expenses&lt;/span&gt;</oef:ExpenseHeading>
    <oef:ExpenseNarrativeTextBlock
      contextRef="S000005486"
      id="f931d198-4232-456d-b156-e4b5b8cd318e">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;margin-left:3.76%;"&gt;The table below describes the fees and expenses that you may bear for each class of shares if you buy, hold, and sell shares of the &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;Fund. You may pay other fees, such as brokerage commissions and other fees to financial intermediaries, which are not reflected in the table and example below.&lt;/span&gt;</oef:ExpenseNarrativeTextBlock>
    <oef:OperatingExpensesCaption
      contextRef="S000005486"
      id="x_53023c8a-7115-4017-9525-2b1ab470ac9c">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-weight:bold;"&gt;Annual Fund operating expenses &lt;/span&gt; &lt;br/&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;(expenses that you bear each year as a percentage of the value of your investment)&lt;/span&gt;</oef:OperatingExpensesCaption>
    <oef:ManagementFeesOverAssets
      contextRef="S000005486_C000014930"
      decimals="4"
      id="x_43d6de5a-5d5d-48a5-9b89-da7bce3240df"
      unitRef="pure">0.0000</oef:ManagementFeesOverAssets>
    <oef:ManagementFeesOverAssets
      contextRef="S000005486_C000213374"
      decimals="4"
      id="fe7332d6-7153-453b-9f1c-6a4af26c20f0"
      unitRef="pure">0.0000</oef:ManagementFeesOverAssets>
    <oef:ManagementFeesOverAssets
      contextRef="S000005486_C000213375"
      decimals="4"
      id="x_6bd23124-4c63-467c-b87c-a6adcabeba0c"
      unitRef="pure">0.0000</oef:ManagementFeesOverAssets>
    <oef:OtherExpensesOverAssets
      contextRef="S000005486_C000014930"
      decimals="4"
      id="x_3635829d-c5e8-4862-9f02-dfbecd45c8dd"
      unitRef="pure">0.0006</oef:OtherExpensesOverAssets>
    <oef:OtherExpensesOverAssets
      contextRef="S000005486_C000213374"
      decimals="4"
      id="cd111e31-6291-4077-a87b-1f93792e287e"
      unitRef="pure">0.0006</oef:OtherExpensesOverAssets>
    <oef:OtherExpensesOverAssets
      contextRef="S000005486_C000213375"
      decimals="4"
      id="x_1e7ac068-e4a6-4ce6-831c-87227a890c42"
      unitRef="pure">0.0018</oef:OtherExpensesOverAssets>
    <oef:AcquiredFundFeesAndExpensesOverAssets
      contextRef="S000005486_C000014930"
      decimals="4"
      id="x_2919deff-8214-4e26-a82c-a92b887c7975"
      unitRef="pure">0.0069</oef:AcquiredFundFeesAndExpensesOverAssets>
    <oef:AcquiredFundFeesAndExpensesOverAssets
      contextRef="S000005486_C000213374"
      decimals="4"
      id="b1463d9f-3d65-4323-8ee8-d0a0666e2657"
      unitRef="pure">0.0069</oef:AcquiredFundFeesAndExpensesOverAssets>
    <oef:AcquiredFundFeesAndExpensesOverAssets
      contextRef="S000005486_C000213375"
      decimals="4"
      id="x_75141d96-a650-463e-a0f0-31f0f8868bca"
      unitRef="pure">0.0069</oef:AcquiredFundFeesAndExpensesOverAssets>
    <oef:ExpensesOverAssets
      contextRef="S000005486_C000014930"
      decimals="4"
      id="x_1d34b741-d350-4954-a08b-d1f17c75a5cd"
      unitRef="pure">0.0075</oef:ExpensesOverAssets>
    <oef:ExpensesOverAssets
      contextRef="S000005486_C000213374"
      decimals="4"
      id="x_4ce56257-2ec9-4a65-b48e-7a8f32b5b58e"
      unitRef="pure">0.0075</oef:ExpensesOverAssets>
    <oef:ExpensesOverAssets
      contextRef="S000005486_C000213375"
      decimals="4"
      id="b8bae388-6111-4c0f-b918-e3109b947fde"
      unitRef="pure">0.0087</oef:ExpensesOverAssets>
    <oef:FeeWaiverOrReimbursementOverAssets
      contextRef="S000005486_C000014930"
      decimals="4"
      id="x_7e807973-fa51-4d3a-82e9-16d1ebfcda73"
      unitRef="pure">-0.0005</oef:FeeWaiverOrReimbursementOverAssets>
    <oef:FeeWaiverOrReimbursementOverAssets
      contextRef="S000005486_C000213374"
      decimals="4"
      id="c1462e6d-36de-44fe-99e0-4569a336f8d6"
      unitRef="pure">-0.0005</oef:FeeWaiverOrReimbursementOverAssets>
    <oef:FeeWaiverOrReimbursementOverAssets
      contextRef="S000005486_C000213375"
      decimals="4"
      id="x_9afeb73b-509b-4152-ae7e-f5573d56e1f1"
      unitRef="pure">-0.0005</oef:FeeWaiverOrReimbursementOverAssets>
    <oef:NetExpensesOverAssets
      contextRef="S000005486_C000014930"
      decimals="4"
      id="f07cafd5-4081-4a0b-9961-dd345a05801c"
      unitRef="pure">0.0070</oef:NetExpensesOverAssets>
    <oef:NetExpensesOverAssets
      contextRef="S000005486_C000213374"
      decimals="4"
      id="x_4be9fd16-13e6-48c8-8ab4-e35d2d7d322d"
      unitRef="pure">0.0070</oef:NetExpensesOverAssets>
    <oef:NetExpensesOverAssets
      contextRef="S000005486_C000213375"
      decimals="4"
      id="x_44fcb934-d48a-4264-9546-a82eb025971c"
      unitRef="pure">0.0082</oef:NetExpensesOverAssets>
    <oef:FeeWaiverOrReimbursementOverAssetsDateOfTermination
      contextRef="S000005486"
      id="x_7a8a634f-df76-4b82-bd55-0488e2afb8bb">&lt;span style="color:#000000;font-family:Times New Roman;font-size:8pt;font-style:italic;"&gt;June 30, 2026&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:8pt;font-style:italic;"&gt;June 30, 2026&lt;/span&gt;</oef:FeeWaiverOrReimbursementOverAssetsDateOfTermination>
    <oef:ExpenseExampleHeading
      contextRef="S000005486"
      id="x_04c45ce1-acf2-43bc-89da-ecd92172de8c">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-weight:bold;"&gt;Example&lt;/span&gt;</oef:ExpenseExampleHeading>
    <oef:ExpenseExampleNarrativeTextBlock
      contextRef="S000005486"
      id="c012d5fa-13cb-463d-b971-da2ef77582c1">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;margin-left:3.76%;"&gt;This example is intended to help you compare the cost of investing in the Fund with the cost of investing in other funds. The &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;example assumes that you invest $10,000 in the Fund for the time periods indicated, regardless of whether or not you redeem your shares at the end of such periods. The example also assumes that your investment has a 5% return each year and that the Fund&#x2019;s operating expenses remain the same as those shown in the table. The one year amounts shown reflect the expense reimbursement noted in the expense table. Although your actual costs may be higher or lower, based on these assumptions your costs would be:&lt;/span&gt;</oef:ExpenseExampleNarrativeTextBlock>
    <oef:ExpenseExampleYear01
      contextRef="S000005486_C000014930"
      decimals="INF"
      id="x_3f7f35c6-5946-4128-ae3f-4d1e24689ade"
      unitRef="USD">72</oef:ExpenseExampleYear01>
    <oef:ExpenseExampleYear03
      contextRef="S000005486_C000014930"
      decimals="INF"
      id="x_12ab2cc2-744d-4037-bfc4-e255df4bfe70"
      unitRef="USD">235</oef:ExpenseExampleYear03>
    <oef:ExpenseExampleYear05
      contextRef="S000005486_C000014930"
      decimals="INF"
      id="cc029494-3281-40d8-a800-962207fe2376"
      unitRef="USD">412</oef:ExpenseExampleYear05>
    <oef:ExpenseExampleYear10
      contextRef="S000005486_C000014930"
      decimals="INF"
      id="x_97b9d47b-d07b-4011-9529-94f7dea3d17f"
      unitRef="USD">926</oef:ExpenseExampleYear10>
    <oef:ExpenseExampleYear01
      contextRef="S000005486_C000213374"
      decimals="INF"
      id="x_8943073d-990f-4c8d-a0e5-9ad028d02d35"
      unitRef="USD">72</oef:ExpenseExampleYear01>
    <oef:ExpenseExampleYear03
      contextRef="S000005486_C000213374"
      decimals="INF"
      id="x_7d8bae5a-242f-4b4a-96d4-9f9ef7ed0a42"
      unitRef="USD">235</oef:ExpenseExampleYear03>
    <oef:ExpenseExampleYear05
      contextRef="S000005486_C000213374"
      decimals="INF"
      id="cedcf92a-7a6b-4195-bd2e-03eeab4da906"
      unitRef="USD">412</oef:ExpenseExampleYear05>
    <oef:ExpenseExampleYear10
      contextRef="S000005486_C000213374"
      decimals="INF"
      id="x_517ae6e9-118e-43d2-b9c4-23c6b118e0e4"
      unitRef="USD">926</oef:ExpenseExampleYear10>
    <oef:ExpenseExampleYear01
      contextRef="S000005486_C000213375"
      decimals="INF"
      id="x_930c28c0-fbb0-42ef-856f-6f822a3770e5"
      unitRef="USD">84</oef:ExpenseExampleYear01>
    <oef:ExpenseExampleYear03
      contextRef="S000005486_C000213375"
      decimals="INF"
      id="x_3b09f3fe-a816-4e89-926f-64b07d7813a6"
      unitRef="USD">273</oef:ExpenseExampleYear03>
    <oef:ExpenseExampleYear05
      contextRef="S000005486_C000213375"
      decimals="INF"
      id="e84c2332-9838-485e-ad11-91ed9be0927d"
      unitRef="USD">477</oef:ExpenseExampleYear05>
    <oef:ExpenseExampleYear10
      contextRef="S000005486_C000213375"
      decimals="INF"
      id="x_4d46a3e2-c8d6-44b8-9763-ac0e7e489b09"
      unitRef="USD">1068</oef:ExpenseExampleYear10>
    <oef:PortfolioTurnoverHeading
      contextRef="S000005486"
      id="f01fa773-aab7-4a25-9e6b-440842160edf">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-weight:bold;"&gt;Portfolio turnover&lt;/span&gt;</oef:PortfolioTurnoverHeading>
    <oef:PortfolioTurnoverTextBlock
      contextRef="S000005486"
      id="x_07c7c5f7-7414-4111-9849-0e3edf6cff05">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;margin-left:3.76%;"&gt;The Fund pays transaction costs, such as commissions, when it buys and sells securities. A higher portfolio turnover rate may &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;result in higher transaction costs and, for holders of Fund shares subject to U.S. taxes, higher income taxes. These transaction costs, which are not reflected in Annual Fund operating expenses or in the Example, affect the Fund&#x2019;s performance.&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; During its fiscal year &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;ended February 28, 2025, the Fund&#x2019;s portfolio turnover rate (excluding short-term investments) was &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;20&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;% of the average value of its portfolio securities.&lt;/span&gt;</oef:PortfolioTurnoverTextBlock>
    <oef:PortfolioTurnoverRate
      contextRef="S000005486"
      decimals="4"
      id="x_3a5d026b-28cf-41af-90cc-e1c46adaeced"
      unitRef="pure">0.20</oef:PortfolioTurnoverRate>
    <oef:StrategyHeading
      contextRef="S000005486"
      id="da5a52d5-3ad3-42eb-b114-b4527ab0627c">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-weight:bold;"&gt;Principal investment strategies&lt;/span&gt;</oef:StrategyHeading>
    <oef:StrategyNarrativeTextBlock
      contextRef="S000005486"
      id="x_83b1f451-935e-4f8e-ac9a-e23446dff409">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;margin-left:3.76%;"&gt;The Fund is a fund of funds and invests primarily in equities traded in non-U.S. markets (including emerging markets) through its &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;investment in Equity Funds and GMO-managed exchange-traded funds (collectively, the &#x201c;underlying GMO Funds&#x201d;) (see &#x201c;Additional Information About the Funds&#x2019; Investment Strategies, Risks, and Expenses &#x2014; Asset Allocation Funds&#x201d;). The Fund also may invest directly in securities (including other underlying funds) and derivatives.&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;margin-left:3.76%;"&gt;GMO uses its quantitative multi-year forecasts of returns among asset classes, together with its assessment of the relative risks of &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;asset classes, to determine the asset classes in which the Fund invests and how much the Fund invests in each asset class. An important component of those forecasts is GMO&#x2019;s expectation that valuations ultimately revert to their fundamental fair (or intrinsic) value over a complete market cycle. GMO changes the Fund&#x2019;s asset class exposures in response to changes in GMO&#x2019;s investment outlook and its assessment of market valuations and may use redemptions or purchases of Fund shares to rebalance the Fund&#x2019;s investments. The factors GMO considers and investment methods GMO uses can change over time.&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;margin-left:3.76%;"&gt;Under normal circumstances, the Fund invests (including through its investment in the underlying GMO Funds) at least 80% of its &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;assets in equities (see &#x201c;Name Policies&#x201d;).&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;margin-left:3.76%;"&gt;The Fund may invest in securities of companies of any market capitalization. In addition, the Fund may lend its portfolio &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;securities.&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;margin-left:3.76%;"&gt;The Fund also may invest in U.S. Treasury Fund, in money market funds unaffiliated with GMO, and directly in the types of &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;investments typically held by money market funds.&lt;/span&gt;</oef:StrategyNarrativeTextBlock>
    <oef:RiskTextBlock
      contextRef="S000005486_RiskLoseMoneyMember"
      id="x_7244c20f-41a5-4ff9-8b87-ae4aed7bd7ee">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;Many factors can affect this value, and you may lose money by investing in the Fund.&lt;/span&gt;</oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="S000005486_RiskNotInsuredDepositoryInstitutionMember"
      id="fbc3ecc5-c6eb-4afa-bad1-b6312690e174">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;An investment in the Fund is not a bank deposit and is not insured or guaranteed by the FDIC or &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;any government agency.&lt;/span&gt;</oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="S000005486_MarketRiskEquitiesRiskMember"
      id="x_34734b44-4b47-467b-a741-023676655924">&lt;span style="color:#000000;font-family:Times New Roman;font-size:8pt;"&gt;&#x25cf;&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-style:italic;"&gt;Market Risk &#x2013; Equities &#x2013; &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;The market price of an equity in the Fund&#x2019;s portfolio may decline due to factors affecting the issuer or its industry or the economy and equity markets generally. If the Fund purchases an equity for less than its fundamental fair (or intrinsic) value as assessed by GMO, the Fund runs the risk that the market price of the equity will not appreciate or will decline (for example, if GMO&#x2019;s assessment proves to be incorrect or the market fails to recognize the equity&#x2019;s intrinsic value). The Fund also may purchase equities that typically trade at higher multiples of current earnings than other securities, and the market prices of these equities often are more sensitive to changes in future earnings expectations and interest rates than the market prices of equities trading at lower multiples. Declines in stock market prices generally are likely to reduce the net asset value of the Fund&#x2019;s shares.&lt;/span&gt;</oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="S000005486_NonUSInvestmentRiskMember"
      id="bd31c7c8-a1d0-41bc-8f53-4f8f1be3166b">&lt;span style="color:#000000;font-family:Times New Roman;font-size:8pt;"&gt;&#x25cf;&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-style:italic;"&gt;Non-U.S. Investment Risk&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; &#x2013; The market prices of many non-U.S. securities fluctuate more than those of U.S. securities. Many non-U.S. securities markets are less stable, smaller, less liquid, and less regulated than U.S. securities markets, and the cost of trading in those markets often is higher than in U.S. securities markets. In addition, non-U.S. securities issuers often are not subject to as much regulation as U.S. issuers, and the reporting, recordkeeping, accounting, custody, and auditing standards to which those issuers are subject often are not as rigorous as U.S. standards. In addition, the Fund is subject to taxation by countries other than the United States, including potentially on a retroactive basis, on (i) capital gains it realizes or dividends, interest, or other amounts it realizes or accrues in respect of non-U.S. investments; (ii) transactions in those investments; and (iii) repatriation of proceeds generated from the sale or other disposition of those investments.&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; Also, the Fund needs a license to invest directly in securities &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;traded in many non-U.S. securities markets, and the Fund is subject to the risk that its license is terminated or suspended. In some non-U.S. securities markets, prevailing custody and trade settlement practices (e.g., the requirement to pay for securities prior to receipt) expose the Fund to credit and other risks. Further, adverse changes in investment regulations, capital requirements or exchange controls could adversely affect the value of the Fund&#x2019;s investments. The risks above (such as substantial price fluctuations and market instability, illiquidity and lack of regulation) and other risks (e.g., nationalization, expropriation or other confiscation of assets of non-U.S. issuers, difficulties enforcing legal judgments or contractual rights and geopolitical risks) tend to be higher for investments in the securities of issuers tied economically to emerging countries. The economies of emerging countries often depend predominantly on only a few industries or commodities and often are more volatile than the economies of developed countries.&lt;/span&gt;</oef:RiskTextBlock>
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      contextRef="S000005486_ManagementandOperationalRiskMember"
      id="f94765d4-6180-4e0d-af59-bda9cbf721e2">&lt;span style="color:#000000;font-family:Times New Roman;font-size:8pt;"&gt;&#x25cf;&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-style:italic;"&gt;Management and Operational Risk&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; &#x2013; The Fund runs the risk that GMO&#x2019;s investment techniques will fail to produce intended results.&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;GMO uses quantitative models as part of its investment process. GMO&#x2019;s models may not accurately predict future market movements. In addition, GMO&#x2019;s models rely on assumptions and data that are subject to limitations (e.g., inaccuracies, staleness) that could adversely affect their predictive value.&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; The Fund also runs the risk that GMO&#x2019;s assessment of an investment, including a &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;security&#x2019;s fundamental fair (or intrinsic) value, is wrong or that deficiencies in GMO&#x2019;s or another service provider&#x2019;s internal systems or controls will cause losses for the Fund or impair Fund operations.&lt;/span&gt;</oef:RiskTextBlock>
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      contextRef="S000005486_CurrencyRiskMember"
      id="a5becc90-7cf3-4ff0-bc7d-41f1e22aa480">&lt;span style="color:#000000;font-family:Times New Roman;font-size:8pt;"&gt;&#x25cf;&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-style:italic;"&gt;Currency Risk&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; &#x2013; Fluctuations in exchange rates can adversely affect the market value of the Fund&#x2019;s foreign currency holdings and investments denominated in foreign currencies.&lt;/span&gt;</oef:RiskTextBlock>
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      contextRef="S000005486_DerivativesandShortSalesRiskMember"
      id="x_6b0fe2e1-4b98-4fef-8799-b41d814c9514">&lt;span style="color:#000000;font-family:Times New Roman;font-size:8pt;"&gt;&#x25cf;&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-style:italic;"&gt;Derivatives and Short Sales Risk&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; &#x2013; The use of derivatives involves the risk that their value may not change as expected relative to changes in the value of the underlying assets, pools of assets, rates, currencies or indices. Derivatives also present other risks, including market risk, illiquidity risk, currency risk, credit risk, leveraging risk, commodities risk and counterparty risk. The market price of an option is affected by many factors, including changes in the market prices or dividend rates of underlying securities (or in the case of indices, the securities in such indices); the time remaining before expiration; changes in interest rates or exchange rates; and changes in the actual or perceived volatility of the relevant index or underlying securities. The Fund typically creates short investment exposure by selling securities short or by taking a derivative position in which the value of the derivative moves in the opposite direction from the price of an underlying asset, pool of assets, rate, currency or index. Specifically, the net asset value of the Fund&#x2019;s shares will be adversely affected if the securities or other assets that are the subject of the Fund&#x2019;s short exposures appreciate in value. The risk of loss associated with derivatives that provide short investment exposure and short sales of securities is theoretically unlimited.&lt;/span&gt;</oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="S000005486_FundofFundsRiskMember"
      id="d4ac0fa1-64ce-438a-b8b7-fa7462db3786">&lt;span style="color:#000000;font-family:Times New Roman;font-size:8pt;"&gt;&#x25cf;&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-style:italic;"&gt;Fund of Funds Risk&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; &#x2013; The Fund is indirectly exposed to all of the risks of an investment in the underlying funds in which it invests, including the risk that those underlying funds will not perform as expected. The fees and expenses associated with an investment in the Fund are less predictable than those associated with an investment in funds that charge a fixed management fee.&lt;/span&gt;</oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="S000005486_SmallerCompanyRiskMember"
      id="x_9eb6c721-8a6b-416b-99d5-26b03ec335c3">&lt;span style="color:#000000;font-family:Times New Roman;font-size:8pt;"&gt;&#x25cf;&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-style:italic;"&gt;Smaller Company Risk&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; &#x2013; Smaller companies may have limited product lines, markets, or financial resources, lack the competitive strength of larger companies, have less experienced managers or depend on a few key employees. The securities of companies with smaller market capitalizations often are less widely held and trade less frequently and in lesser quantities, and their market prices often fluctuate more, than the securities of companies with larger market capitalizations.&lt;/span&gt;</oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="S000005486_LeveragingRiskMember"
      id="x_7b73b4cd-f946-42fc-9454-03a5d3af894e">&lt;span style="color:#000000;font-family:Times New Roman;font-size:8pt;"&gt;&#x25cf;&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-style:italic;"&gt;Leveraging Risk&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; &#x2013; The use of derivatives, short sales and securities lending can create leverage. Leverage increases the Fund&#x2019;s losses when the value of its investments (including derivatives) declines. In addition, the Fund&#x2019;s portfolio will be leveraged if it exercises its right to delay payment on a redemption and the value of the Fund&#x2019;s assets declines between the time a redemption request is treated as being received by the Fund and the time the Fund liquidates assets to fund that redemption.&lt;/span&gt;</oef:RiskTextBlock>
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      contextRef="S000005486_CounterpartyRiskMember"
      id="b3e0f5b9-c66f-469f-83c1-b0a2bdc9dcea">&lt;span style="color:#000000;font-family:Times New Roman;font-size:8pt;"&gt;&#x25cf;&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-style:italic;"&gt;Counterparty Risk&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; &#x2013; The Fund runs the risk that the counterparty to a derivatives contract or a clearing member used by the Fund to hold a cleared derivatives contract is unable or unwilling to make timely settlement payments, return the Fund&#x2019;s collateral or otherwise honor its obligations.&lt;/span&gt;</oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="S000005486_MarketDisruptionandGeopoliticalRiskMember"
      id="x_76ff8cbd-c3ca-4da9-bea1-d8a78df20c3e">&lt;span style="color:#000000;font-family:Times New Roman;font-size:8pt;"&gt;&#x25cf;&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-style:italic;"&gt;Market Disruption and Geopolitical Risk&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; &#x2013; Geopolitical and other events (e.g., wars, pandemics, sanctions, terrorism, diplomatic tensions, dramatic changes in regulatory and/or foreign policy, cyberattacks, and rapid technological developments such as artificial intelligence) often disrupt securities markets and adversely affect the general economy or particular economies and markets. Those events, as well as other changes in non-U.S. and U.S. economic and political conditions, could exacerbate other risks or otherwise reduce the value of the Fund&#x2019;s investments.&lt;/span&gt;</oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="S000005486_FocusedInvestmentRiskMember"
      id="x_62049423-12c5-4fd7-bbc4-eb8d89d4eca5">&lt;span style="color:#000000;font-family:Times New Roman;font-size:8pt;"&gt;&#x25cf;&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-style:italic;"&gt;Focused Investment Risk&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; &#x2013; Investments in countries, regions, asset classes, sectors, industries, currencies, or issuers that are subject to the same or similar risk factors and investments whose market prices are closely correlated are subject to higher overall risk than investments that are more diversified or whose market prices are not as closely correlated.&lt;/span&gt;</oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="S000005486_LargeTransactionsRiskMember"
      id="x_57e3381d-3183-45e7-b32f-3f0108941a75">&lt;span style="color:#000000;font-family:Times New Roman;font-size:8pt;"&gt;&#x25cf;&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-style:italic;"&gt;Large Transactions Risk&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; &#x2013; To the extent that a large number of shares of the Fund is held by a single shareholder (e.g., an institutional investor or another GMO Fund) or a group of shareholders with a common investment strategy (e.g., GMO asset allocation accounts), the Fund is subject to the risk that a redemption by (or caused by) that shareholder or group will require the Fund to sell investments at disadvantageous prices, disrupt the Fund&#x2019;s operations, lead to temporary overexposure to the Fund&#x2019;s intended investment program or force the Fund&#x2019;s liquidation. The Fund also may be subject to these effects when a number of shareholders collectively redeem or sell a large amount of Fund shares.&lt;/span&gt;</oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="S000005486_IlliquidityRiskMember"
      id="x_0f70a4a5-20d3-4e11-8552-02ceb411ec82">&lt;span style="color:#000000;font-family:Times New Roman;font-size:8pt;"&gt;&#x25cf;&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-style:italic;"&gt;Illiquidity Risk&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; &#x2013; Low trading volume, lack of a market maker, large position size, or legal restrictions increase the risk that the Fund or an underlying fund is limited or prevented from selling particular securities or closing derivative positions at desirable prices at a particular time or at all.&lt;/span&gt;</oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="S000005486_MarketRiskFixedIncomeRiskMember"
      id="x_7ad61d99-69de-4514-bbac-a09d1b7ce7bb">&lt;span style="color:#000000;font-family:Times New Roman;font-size:8pt;"&gt;&#x25cf;&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-style:italic;"&gt;Market Risk &#x2013; Fixed Income&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; &#x2013; The market price of a fixed income investment can decline due to market-related factors, including rising interest or inflation rates and widening credit spreads, or decreased liquidity due, for example, to market uncertainty about the value of a fixed income investment (or class of fixed income investments).&lt;/span&gt;</oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="S000005486_CreditRiskMember"
      id="x_2736e5c8-2e5a-478e-972c-fc254965e3c5">&lt;span style="color:#000000;font-family:Times New Roman;font-size:8pt;"&gt;&#x25cf;&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-style:italic;"&gt;Credit Risk&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; &#x2013; The Fund runs the risk that the issuer or guarantor of a fixed income investment (including a sovereign or quasi-sovereign debt issuer) or the obligor of an obligation underlying an asset-backed security will be unable or unwilling to satisfy its obligation to pay principal and interest or otherwise to honor its obligations in a timely manner or at all. The market price of a fixed income investment will normally decline as a result of the failure of an issuer, guarantor, or obligor to meet its payment obligations or in anticipation of such a failure. Below investment grade investments (commonly referred to as high yield or &#x201c;junk&#x201d; bonds) have speculative characteristics and are subject to greater credit risk than other fixed income investments. Negative changes in economic conditions or other circumstances are more likely to impair the ability of issuers of below investment grade investments to make principal and interest payments than issuers of investment grade investments.&lt;/span&gt;</oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="S000005486_ValueInvestingRiskMember"
      id="bb9d328c-4abe-4765-8eda-5cd119d5a460">&lt;span style="color:#000000;font-family:Times New Roman;font-size:8pt;"&gt;&#x25cf;&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-style:italic;"&gt;Value Investing Risk&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; &#x2013; Issuers whose securities GMO believes are undervalued may not realize their business potential, may never be recognized by the market as being undervalued and/or may be appropriately priced notwithstanding GMO&#x2019;s assessment. These and other factors may cause the price of value stocks to decline, resulting in losses to the Fund.&lt;/span&gt;</oef:RiskTextBlock>
    <oef:BarChartAndPerformanceTableHeading
      contextRef="S000005486"
      id="b8a6f17a-b6d4-4494-b0a8-839666a8ccd0">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-weight:bold;"&gt;Performance&lt;/span&gt;</oef:BarChartAndPerformanceTableHeading>
    <oef:PerformanceNarrativeTextBlock
      contextRef="S000005486"
      id="bf787bcc-3097-45ef-9c08-8bc97c3a7cb7">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;margin-left:3.76%;"&gt;The bar chart and table below provide some indication of the risks of investing in the Fund by showing changes in the Fund&#x2019;s &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;annual total returns from year to year for the periods indicated and by comparing the Fund&#x2019;s average annual total returns for different calendar periods with those of the Fund&#x2019;s benchmark, a broad-based securities market index.&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; Share classes not shown would have &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;substantially similar annual returns to those below because all share classes invest in the same portfolio of securities. Annual returns vary among share classes to the extent that they bear different expenses. Share classes that bear higher expenses than the share classes shown below would have lower returns. &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;After-tax returns are calculated using the historical highest individual federal marginal income &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;tax rates and do not reflect the impact of state and local taxes.&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; Actual after-tax returns depend on your tax situation and may differ from &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;those shown. After-tax returns shown are not relevant if you are tax-exempt or if you hold your Fund shares through tax-advantaged arrangements (such as a 401(k) plan or individual retirement account). &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;After-tax returns are shown for Class III shares only; after-tax &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;returns for other classes will vary.&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; Updated performance information for the Fund is available at &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;www.gmo.com&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;. &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;Past performance (before and after taxes) is not an indication of future performance.&lt;/span&gt;</oef:PerformanceNarrativeTextBlock>
    <oef:PerformanceInformationIllustratesVariabilityOfReturns
      contextRef="S000005486"
      id="b083b839-db0a-4794-8c4c-56d6488694e0">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;margin-left:3.76%;"&gt;The bar chart and table below provide some indication of the risks of investing in the Fund by showing changes in the Fund&#x2019;s &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;annual total returns from year to year for the periods indicated and by comparing the Fund&#x2019;s average annual total returns for different calendar periods with those of the Fund&#x2019;s benchmark, a broad-based securities market index.&lt;/span&gt;</oef:PerformanceInformationIllustratesVariabilityOfReturns>
    <oef:PerformanceTableUsesHighestFederalRate
      contextRef="S000005486"
      id="x_88ea81c3-5127-41e4-839d-fd467114f7c7">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;After-tax returns are calculated using the historical highest individual federal marginal income &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;tax rates and do not reflect the impact of state and local taxes.&lt;/span&gt;</oef:PerformanceTableUsesHighestFederalRate>
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      contextRef="S000005486"
      id="x_5dc7ac93-a8e3-42d5-8ecf-521bc25409d1">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; Actual after-tax returns depend on your tax situation and may differ from &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;those shown. After-tax returns shown are not relevant if you are tax-exempt or if you hold your Fund shares through tax-advantaged arrangements (such as a 401(k) plan or individual retirement account). &lt;/span&gt;</oef:PerformanceTableNotRelevantToTaxDeferred>
    <oef:PerformanceTableOneClassOfAfterTaxShown
      contextRef="S000005486"
      id="c3cd22b4-c471-4930-a03c-e52e2eef0716">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;After-tax returns are shown for Class III shares only; after-tax &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;returns for other classes will vary.&lt;/span&gt;</oef:PerformanceTableOneClassOfAfterTaxShown>
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      contextRef="S000005486"
      id="x_3b42855e-c185-4e34-a6d9-4389c7541d49">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;www.gmo.com&lt;/span&gt;</oef:PerformanceAvailabilityWebSiteAddress>
    <oef:PerformancePastDoesNotIndicateFuture
      contextRef="S000005486"
      id="x_77d64e07-dee4-4c48-814c-d8c6f22e6037">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;Past performance (before and after taxes) is not an indication of future performance.&lt;/span&gt;</oef:PerformancePastDoesNotIndicateFuture>
    <oef:BarChartHeading
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      id="c2d4d279-b2cb-4a64-894c-0ccd439fff43">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-weight:bold;"&gt;Annual Total Returns/Class III Shares&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:6.5pt;font-weight:bold;position:relative;top:-2.75pt;"&gt;1&lt;/span&gt; &lt;br/&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;Years Ending December 31&lt;/span&gt;</oef:BarChartHeading>
    <oef:BarChartClosingTextBlock
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      id="c01ff8c0-f2d6-4806-948c-55539d74b130">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;Highest Quarter:&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;16.30%&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;-sec-ix-hidden:e4534527-f772-4cec-ba22-8e22c9354402"&gt;2Q 2020&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;Lowest Quarter:&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;-24.01%&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;-sec-ix-hidden:x_10176fe9-6f81-420d-bca8-e9de03e2dbad"&gt;1Q 2020&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;Year-to-Date:&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;8.15%&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;As of&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;3/31/2025&lt;/span&gt;</oef:BarChartClosingTextBlock>
    <oef:HighestQuarterlyReturnLabel
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      id="f2d268ff-7066-4735-aa23-0be3092a8f37">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;Highest Quarter:&lt;/span&gt;</oef:HighestQuarterlyReturnLabel>
    <oef:BarChartHighestQuarterlyReturn
      contextRef="S000005486_C000014930"
      decimals="4"
      id="bb5f3167-0562-4ffb-ba86-75528b6d00ff"
      unitRef="pure">0.1630</oef:BarChartHighestQuarterlyReturn>
    <oef:LowestQuarterlyReturnLabel
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      id="x_7bb2c6d3-71c6-4579-92c7-f7fc8741763c">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;Lowest Quarter:&lt;/span&gt;</oef:LowestQuarterlyReturnLabel>
    <oef:BarChartLowestQuarterlyReturn
      contextRef="S000005486_C000014930"
      decimals="4"
      id="x_3e2a85d1-14d4-472e-a4b1-3181107e37a7"
      unitRef="pure">-0.2401</oef:BarChartLowestQuarterlyReturn>
    <oef:YearToDateReturnLabel
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      id="x_7390c786-68bf-49ea-af5e-d15e2569b873">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;Year-to-Date:&lt;/span&gt;</oef:YearToDateReturnLabel>
    <oef:BarChartYearToDateReturn
      contextRef="S000005486_C000014930"
      decimals="4"
      id="x_27319da0-b851-4447-a59e-012430f10ad7"
      unitRef="pure">0.0815</oef:BarChartYearToDateReturn>
    <oef:BarChartYearToDateReturnDate
      contextRef="S000005486_C000014930"
      id="x_739eae29-3007-4646-905a-3e211328e5b9">2025-03-31</oef:BarChartYearToDateReturnDate>
    <oef:PerformanceTableHeading
      contextRef="S000005486"
      id="f56d1abe-8842-4c00-b4e3-54c1001e3334">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-weight:bold;"&gt;Average Annual Total Returns&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:6.5pt;font-weight:bold;position:relative;top:-2.75pt;"&gt;1&lt;/span&gt; &lt;br/&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;Periods Ending December 31, 2024&lt;/span&gt;</oef:PerformanceTableHeading>
    <oef:PerfInceptionDate
      contextRef="C000014930"
      id="a1eb7c89-7b15-4ca9-a92e-4e87d66aa199">1996-10-11</oef:PerfInceptionDate>
    <oef:AvgAnnlRtrPct
      contextRef="C000014930_01Jan2024_31Dec2024"
      decimals="4"
      id="ab2a7e6d-d2e3-4d4e-a274-66d769b97ca3"
      unitRef="pure">0.0840</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000014930_01Jan2020_31Dec2024"
      decimals="4"
      id="x_4cb0aed7-2866-4b29-9637-c85315694937"
      unitRef="pure">0.0406</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000014930_01Jan2015_31Dec2024"
      decimals="4"
      id="aaa5600d-3166-4e5b-8036-263099be74f2"
      unitRef="pure">0.0441</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000014930_11Oct1996_31Dec2024"
      decimals="4"
      id="x_29e71792-c1f7-4067-8f4f-356c9407daef"
      unitRef="pure">0.0636</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000014930_AfterTaxesOnDistributionsMember_01Jan2024_31Dec2024"
      decimals="4"
      id="x_96db1cf6-21a2-419a-8d33-991b39044c9d"
      unitRef="pure">0.0660</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000014930_AfterTaxesOnDistributionsMember_01Jan2020_31Dec2024"
      decimals="4"
      id="x_57cf671e-1361-4582-86eb-a64339bca274"
      unitRef="pure">0.0257</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000014930_AfterTaxesOnDistributionsMember_01Jan2015_31Dec2024"
      decimals="4"
      id="x_344bb0f3-a382-4bc9-8237-e863ea6a1376"
      unitRef="pure">0.0327</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000014930_AfterTaxesOnDistributionsMember_11Oct1996_31Dec2024"
      decimals="4"
      id="e8fb66d0-da05-4d46-b29c-0c7161d4a8ba"
      unitRef="pure">0.0489</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000014930_AfterTaxesOnDistributionsAndSalesMember_01Jan2024_31Dec2024"
      decimals="4"
      id="x_9ffb453d-1950-493b-9c76-02547d3f05d4"
      unitRef="pure">0.0582</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000014930_AfterTaxesOnDistributionsAndSalesMember_01Jan2020_31Dec2024"
      decimals="4"
      id="x_66350495-acca-4f9d-a6bf-5af0962f7fa7"
      unitRef="pure">0.0292</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000014930_AfterTaxesOnDistributionsAndSalesMember_01Jan2015_31Dec2024"
      decimals="4"
      id="bd57fa65-d2d5-458e-a36e-fc8c84f723e0"
      unitRef="pure">0.0338</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000014930_AfterTaxesOnDistributionsAndSalesMember_11Oct1996_31Dec2024"
      decimals="4"
      id="b1325e3d-c73b-48f8-a709-caed26104719"
      unitRef="pure">0.0502</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000014930_MSCIACWIexUSAMember_01Jan2024_31Dec2024"
      decimals="4"
      id="x_28cdb675-79c4-46bd-89f2-75b15dd218f6"
      unitRef="pure">0.0553</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000014930_MSCIACWIexUSAMember_01Jan2020_31Dec2024"
      decimals="4"
      id="a99ffe90-8f8d-4cf6-bc7b-3c53dfb98847"
      unitRef="pure">0.0410</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000014930_MSCIACWIexUSAMember_01Jan2015_31Dec2024"
      decimals="4"
      id="x_4c3442be-bd63-48f9-b8eb-53911b2208bb"
      unitRef="pure">0.0480</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000014930_MSCIACWIexUSAMember_11Oct1996_31Dec2024"
      decimals="4"
      id="x_31f3163c-f61c-482b-ac2a-ac1a8326c748"
      unitRef="pure">0.0508</oef:AvgAnnlRtrPct>
    <oef:PerfInceptionDate
      contextRef="C000213374"
      id="fc4f39d2-7542-4b14-8de0-cefec2084d33">2019-08-30</oef:PerfInceptionDate>
    <oef:AvgAnnlRtrPct
      contextRef="C000213374_01Jan2024_31Dec2024"
      decimals="4"
      id="x_46cff45b-ee35-4df4-9efb-2266302a3d3b"
      unitRef="pure">0.0840</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000213374_01Jan2020_31Dec2024"
      decimals="4"
      id="x_4e2adcc6-94c7-4c93-a0b2-c89dd36f3cfc"
      unitRef="pure">0.0407</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000213374_30Aug2019_31Dec2024"
      decimals="4"
      id="e3ba3dd6-d781-409a-b7ee-1660dc6637d4"
      unitRef="pure">0.0676</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000213374_MSCIACWIexUSAMember_01Jan2024_31Dec2024"
      decimals="4"
      id="b833c5f0-e504-4a0c-b315-6339cd31c24e"
      unitRef="pure">0.0553</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000213374_MSCIACWIexUSAMember_01Jan2020_31Dec2024"
      decimals="4"
      id="a41fae5f-94db-4944-96d7-ea6c1204a261"
      unitRef="pure">0.0410</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000213374_MSCIACWIexUSAMember_30Aug2019_31Dec2024"
      decimals="4"
      id="x_8d21d2df-049c-46c3-b4c5-25dcd081ef57"
      unitRef="pure">0.0602</oef:AvgAnnlRtrPct>
    <oef:ObjectiveHeading
      contextRef="S000004224"
      id="x_4f5dd0d6-e2b9-405b-929d-1098d38a88ed">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-weight:bold;"&gt;Investment objective&lt;/span&gt;</oef:ObjectiveHeading>
    <oef:ObjectivePrimaryTextBlock
      contextRef="S000004224"
      id="c7e29e58-08e7-4b00-81d5-2bf0c4e16c9b">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;High total return.&lt;/span&gt;</oef:ObjectivePrimaryTextBlock>
    <oef:ExpenseHeading
      contextRef="S000004224"
      id="x_74bafd93-60a6-4d78-b8bd-ea05965b249d">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-weight:bold;"&gt;Fees and expenses&lt;/span&gt;</oef:ExpenseHeading>
    <oef:ExpenseNarrativeTextBlock
      contextRef="S000004224"
      id="x_1c00ecc3-46bb-42ed-9d56-900b3923c9fd">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;margin-left:3.76%;"&gt;The table below describes the fees and expenses that you may bear for each class of shares if you buy, hold, and sell shares of the &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;Fund. You may pay other fees, such as brokerage commissions and other fees to financial intermediaries, which are not reflected in the table and example below.&lt;/span&gt;</oef:ExpenseNarrativeTextBlock>
    <oef:OperatingExpensesCaption
      contextRef="S000004224"
      id="x_7f9b2a26-60d7-43e8-b657-dd26a4ec0a8a">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-weight:bold;"&gt;Annual Fund operating expenses &lt;/span&gt; &lt;br/&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;(expenses that you bear each year as a percentage of the value of your investment)&lt;/span&gt;</oef:OperatingExpensesCaption>
    <oef:ManagementFeesOverAssets
      contextRef="S000004224_C000011880"
      decimals="4"
      id="e80668f4-a96a-4981-b86d-899c0ae5ed75"
      unitRef="pure">0.0072</oef:ManagementFeesOverAssets>
    <oef:ManagementFeesOverAssets
      contextRef="S000004224_C000011881"
      decimals="4"
      id="x_27f73a04-b5d7-468d-8ae1-8d66f9d4b82c"
      unitRef="pure">0.0065</oef:ManagementFeesOverAssets>
    <oef:ManagementFeesOverAssets
      contextRef="S000004224_C000011882"
      decimals="4"
      id="bcb74df1-c373-429e-a6cd-a22f5d6bb355"
      unitRef="pure">0.0059</oef:ManagementFeesOverAssets>
    <oef:ManagementFeesOverAssets
      contextRef="S000004224_C000213359"
      decimals="4"
      id="e9e8bf10-4d29-470b-a659-6f2347c115b0"
      unitRef="pure">0.0072</oef:ManagementFeesOverAssets>
    <oef:ManagementFeesOverAssets
      contextRef="S000004224_C000213358"
      decimals="4"
      id="fc3b26f0-57b0-4488-8db3-da7d184e87a8"
      unitRef="pure">0.0072</oef:ManagementFeesOverAssets>
    <oef:OtherExpensesOverAssets
      contextRef="S000004224_C000011880"
      decimals="4"
      id="x_17cfd6bf-42f9-4fc7-870a-1fa5e1856dea"
      unitRef="pure">0.0007</oef:OtherExpensesOverAssets>
    <oef:OtherExpensesOverAssets
      contextRef="S000004224_C000011881"
      decimals="4"
      id="x_252cd700-50ab-433c-8eb8-67d120111542"
      unitRef="pure">0.0007</oef:OtherExpensesOverAssets>
    <oef:OtherExpensesOverAssets
      contextRef="S000004224_C000011882"
      decimals="4"
      id="x_0bd1dcfc-162d-4e2c-8eae-4e0d5b0ae498"
      unitRef="pure">0.0007</oef:OtherExpensesOverAssets>
    <oef:OtherExpensesOverAssets
      contextRef="S000004224_C000213359"
      decimals="4"
      id="edcf4877-6f23-4c46-a291-eb0c0bf658f8"
      unitRef="pure">0.0007</oef:OtherExpensesOverAssets>
    <oef:OtherExpensesOverAssets
      contextRef="S000004224_C000213358"
      decimals="4"
      id="x_64bf2c35-d039-4afb-88b3-6ea20e9140fb"
      unitRef="pure">0.0021</oef:OtherExpensesOverAssets>
    <oef:AcquiredFundFeesAndExpensesOverAssets
      contextRef="S000004224_C000011880"
      decimals="4"
      id="x_968134d2-2696-412f-973b-ac4d8cba00e3"
      unitRef="pure">0.0001</oef:AcquiredFundFeesAndExpensesOverAssets>
    <oef:AcquiredFundFeesAndExpensesOverAssets
      contextRef="S000004224_C000011881"
      decimals="4"
      id="f47f41aa-e0ea-4df2-ac45-b04eebfd7781"
      unitRef="pure">0.0001</oef:AcquiredFundFeesAndExpensesOverAssets>
    <oef:AcquiredFundFeesAndExpensesOverAssets
      contextRef="S000004224_C000011882"
      decimals="4"
      id="x_4809b4cd-035a-456c-ba32-64bc941b7e6c"
      unitRef="pure">0.0001</oef:AcquiredFundFeesAndExpensesOverAssets>
    <oef:AcquiredFundFeesAndExpensesOverAssets
      contextRef="S000004224_C000213359"
      decimals="4"
      id="x_7d764fe7-cd78-46dd-95ee-d9e216f9f350"
      unitRef="pure">0.0001</oef:AcquiredFundFeesAndExpensesOverAssets>
    <oef:AcquiredFundFeesAndExpensesOverAssets
      contextRef="S000004224_C000213358"
      decimals="4"
      id="x_58804070-28a1-43a9-9671-056f47a4d110"
      unitRef="pure">0.0001</oef:AcquiredFundFeesAndExpensesOverAssets>
    <oef:ExpensesOverAssets
      contextRef="S000004224_C000011880"
      decimals="4"
      id="x_2b739368-6b4d-41d5-b3c1-c252d9f984a8"
      unitRef="pure">0.0080</oef:ExpensesOverAssets>
    <oef:ExpensesOverAssets
      contextRef="S000004224_C000011881"
      decimals="4"
      id="x_7ca60442-6131-48ea-b826-e479c98faddc"
      unitRef="pure">0.0073</oef:ExpensesOverAssets>
    <oef:ExpensesOverAssets
      contextRef="S000004224_C000011882"
      decimals="4"
      id="x_0079011b-f861-4b90-ae1b-092edc6d8b20"
      unitRef="pure">0.0067</oef:ExpensesOverAssets>
    <oef:ExpensesOverAssets
      contextRef="S000004224_C000213359"
      decimals="4"
      id="x_0feef8cf-691b-43bf-91cc-4fb1fc558781"
      unitRef="pure">0.0080</oef:ExpensesOverAssets>
    <oef:ExpensesOverAssets
      contextRef="S000004224_C000213358"
      decimals="4"
      id="x_50b26459-020f-4217-9956-d48d0fd09c4b"
      unitRef="pure">0.0094</oef:ExpensesOverAssets>
    <oef:FeeWaiverOrReimbursementOverAssets
      contextRef="S000004224_C000011880"
      decimals="4"
      id="eda4ff87-b1e4-4083-b50d-8c52a6642391"
      unitRef="pure">-0.0004</oef:FeeWaiverOrReimbursementOverAssets>
    <oef:FeeWaiverOrReimbursementOverAssets
      contextRef="S000004224_C000011881"
      decimals="4"
      id="x_19fe8da8-b275-4c02-9336-ee87e05a8db1"
      unitRef="pure">-0.0004</oef:FeeWaiverOrReimbursementOverAssets>
    <oef:FeeWaiverOrReimbursementOverAssets
      contextRef="S000004224_C000011882"
      decimals="4"
      id="cae15260-f6b4-4183-8b63-c322ed772e0a"
      unitRef="pure">-0.0004</oef:FeeWaiverOrReimbursementOverAssets>
    <oef:FeeWaiverOrReimbursementOverAssets
      contextRef="S000004224_C000213359"
      decimals="4"
      id="adc08763-8830-4019-a183-501bade177c5"
      unitRef="pure">-0.0004</oef:FeeWaiverOrReimbursementOverAssets>
    <oef:FeeWaiverOrReimbursementOverAssets
      contextRef="S000004224_C000213358"
      decimals="4"
      id="b4be078c-31fc-4eb6-bcdd-f4bedb12ffb3"
      unitRef="pure">-0.0018</oef:FeeWaiverOrReimbursementOverAssets>
    <oef:NetExpensesOverAssets
      contextRef="S000004224_C000011880"
      decimals="4"
      id="x_53fa95d9-471d-4502-8d5a-af5581f1da02"
      unitRef="pure">0.0076</oef:NetExpensesOverAssets>
    <oef:NetExpensesOverAssets
      contextRef="S000004224_C000011881"
      decimals="4"
      id="c0888b89-fc02-471d-9d80-685f70ae0fad"
      unitRef="pure">0.0069</oef:NetExpensesOverAssets>
    <oef:NetExpensesOverAssets
      contextRef="S000004224_C000011882"
      decimals="4"
      id="x_44353348-a54c-4466-baf1-7508d08d8874"
      unitRef="pure">0.0063</oef:NetExpensesOverAssets>
    <oef:NetExpensesOverAssets
      contextRef="S000004224_C000213359"
      decimals="4"
      id="x_50fd1081-bc0c-4e6f-ad91-4b83359cd67a"
      unitRef="pure">0.0076</oef:NetExpensesOverAssets>
    <oef:NetExpensesOverAssets
      contextRef="S000004224_C000213358"
      decimals="4"
      id="d11e8b6e-5f21-4752-8e22-9eda7081a7a7"
      unitRef="pure">0.0076</oef:NetExpensesOverAssets>
    <oef:FeeWaiverOrReimbursementOverAssetsDateOfTermination
      contextRef="S000004224"
      id="x_3a66f2fd-ba8d-473c-a490-79b52bce5dbe">&lt;span style="color:#000000;font-family:Times New Roman;font-size:8pt;font-style:italic;"&gt;June 30, 2026&lt;/span&gt;</oef:FeeWaiverOrReimbursementOverAssetsDateOfTermination>
    <oef:ExpenseExampleHeading
      contextRef="S000004224"
      id="x_21b394b5-c3f7-4beb-96fe-1f081f3b5505">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-weight:bold;"&gt;Example&lt;/span&gt;</oef:ExpenseExampleHeading>
    <oef:ExpenseExampleNarrativeTextBlock
      contextRef="S000004224"
      id="bd44ebb3-2cd9-4024-9a6a-760e921db2a4">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;margin-left:3.76%;"&gt;This example is intended to help you compare the cost of investing in the Fund with the cost of investing in other funds. The &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;example assumes that you invest $10,000 in the Fund for the time periods indicated, regardless of whether or not you redeem your shares at the end of such periods. The example also assumes that your investment has a 5% return each year and that the Fund&#x2019;s operating expenses remain the same as those shown in the table. The one year amounts shown reflect the expense reimbursement and waiver noted in the expense table. Although your actual costs may be higher or lower, based on these assumptions your costs would be:&lt;/span&gt;</oef:ExpenseExampleNarrativeTextBlock>
    <oef:ExpenseExampleYear01
      contextRef="S000004224_C000011880"
      decimals="INF"
      id="x_81bdb1ef-c780-4bde-834c-9c6446d6589c"
      unitRef="USD">78</oef:ExpenseExampleYear01>
    <oef:ExpenseExampleYear03
      contextRef="S000004224_C000011880"
      decimals="INF"
      id="x_86abad92-2281-439a-a079-c0f0916b9ffe"
      unitRef="USD">251</oef:ExpenseExampleYear03>
    <oef:ExpenseExampleYear05
      contextRef="S000004224_C000011880"
      decimals="INF"
      id="ecfcc575-4ede-48b6-8f29-d3e33220cf30"
      unitRef="USD">440</oef:ExpenseExampleYear05>
    <oef:ExpenseExampleYear10
      contextRef="S000004224_C000011880"
      decimals="INF"
      id="x_466860af-ec62-493d-8e31-177e166e70c7"
      unitRef="USD">986</oef:ExpenseExampleYear10>
    <oef:ExpenseExampleYear01
      contextRef="S000004224_C000011881"
      decimals="INF"
      id="ea6ad731-2117-494b-b672-a6ac90940317"
      unitRef="USD">70</oef:ExpenseExampleYear01>
    <oef:ExpenseExampleYear03
      contextRef="S000004224_C000011881"
      decimals="INF"
      id="ef824aa3-871e-4cd7-a05f-e9a7d4b01042"
      unitRef="USD">229</oef:ExpenseExampleYear03>
    <oef:ExpenseExampleYear05
      contextRef="S000004224_C000011881"
      decimals="INF"
      id="a02ed736-29ad-41d8-9748-b7db8d29f65d"
      unitRef="USD">402</oef:ExpenseExampleYear05>
    <oef:ExpenseExampleYear10
      contextRef="S000004224_C000011881"
      decimals="INF"
      id="cf7357a8-0641-4409-8286-fa12cb18e41d"
      unitRef="USD">903</oef:ExpenseExampleYear10>
    <oef:ExpenseExampleYear01
      contextRef="S000004224_C000011882"
      decimals="INF"
      id="d2d9cad7-37f8-4fd1-8ea0-212aee20677c"
      unitRef="USD">64</oef:ExpenseExampleYear01>
    <oef:ExpenseExampleYear03
      contextRef="S000004224_C000011882"
      decimals="INF"
      id="x_83b11128-cf6a-4537-a610-0c4c9ef3e1a8"
      unitRef="USD">210</oef:ExpenseExampleYear03>
    <oef:ExpenseExampleYear05
      contextRef="S000004224_C000011882"
      decimals="INF"
      id="fe62c574-efe5-4b81-bdc1-158fb47971ce"
      unitRef="USD">369</oef:ExpenseExampleYear05>
    <oef:ExpenseExampleYear10
      contextRef="S000004224_C000011882"
      decimals="INF"
      id="x_74d9cdde-a2de-4cdc-ba4d-00f9389f69e1"
      unitRef="USD">831</oef:ExpenseExampleYear10>
    <oef:ExpenseExampleYear01
      contextRef="S000004224_C000213359"
      decimals="INF"
      id="x_24b5d7ed-99f8-4de9-88b8-fb71ec73953a"
      unitRef="USD">78</oef:ExpenseExampleYear01>
    <oef:ExpenseExampleYear03
      contextRef="S000004224_C000213359"
      decimals="INF"
      id="x_6c73b4b4-f8d2-4998-8242-8547b8d566b1"
      unitRef="USD">251</oef:ExpenseExampleYear03>
    <oef:ExpenseExampleYear05
      contextRef="S000004224_C000213359"
      decimals="INF"
      id="c5510e25-bb10-4dd0-8ec9-0c534cdd98e1"
      unitRef="USD">440</oef:ExpenseExampleYear05>
    <oef:ExpenseExampleYear10
      contextRef="S000004224_C000213359"
      decimals="INF"
      id="afe38dd9-ae67-4177-a6fe-efccf4424e19"
      unitRef="USD">986</oef:ExpenseExampleYear10>
    <oef:ExpenseExampleYear01
      contextRef="S000004224_C000213358"
      decimals="INF"
      id="x_47eaf67d-12fd-42f0-a384-9a3396ea5b04"
      unitRef="USD">78</oef:ExpenseExampleYear01>
    <oef:ExpenseExampleYear03
      contextRef="S000004224_C000213358"
      decimals="INF"
      id="f2a4978d-7246-44f4-860d-6665f18b7028"
      unitRef="USD">282</oef:ExpenseExampleYear03>
    <oef:ExpenseExampleYear05
      contextRef="S000004224_C000213358"
      decimals="INF"
      id="x_59d37db6-64e0-408a-bdd3-342e210a93a4"
      unitRef="USD">503</oef:ExpenseExampleYear05>
    <oef:ExpenseExampleYear10
      contextRef="S000004224_C000213358"
      decimals="INF"
      id="x_3bb0d012-979f-4398-877e-f46bbceec1ff"
      unitRef="USD">1138</oef:ExpenseExampleYear10>
    <oef:PortfolioTurnoverHeading
      contextRef="S000004224"
      id="x_82e926ca-890b-4ca3-b790-4813a91bb0b1">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-weight:bold;"&gt;Portfolio turnover&lt;/span&gt;</oef:PortfolioTurnoverHeading>
    <oef:PortfolioTurnoverTextBlock
      contextRef="S000004224"
      id="cbf2d8ff-6dd8-4d7c-ad9c-f0cdf8419016">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;margin-left:3.76%;"&gt;The Fund pays transaction costs, such as commissions, when it buys and sells securities. A higher portfolio turnover rate may &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;result in higher transaction costs and, for holders of Fund shares subject to U.S. taxes, higher income taxes. These transaction costs, which are not reflected in Annual Fund operating expenses or in the Example, affect the Fund&#x2019;s performance.&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; During its fiscal year &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;ended February 28, 2025, the Fund&#x2019;s portfolio turnover rate (excluding short-term investments) was &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;84&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;% of the average value of its portfolio securities.&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; That portfolio turnover rate includes investments in U.S. Treasury Fund, which the Fund uses as a short-term &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;investment vehicle for cash management. The Fund&#x2019;s portfolio turnover rate during its fiscal year ended February 28, 2025, excluding transactions in U.S. Treasury Fund and other short-term investments, was 71% of the average value of its portfolio securities.&lt;/span&gt;</oef:PortfolioTurnoverTextBlock>
    <oef:PortfolioTurnoverRate
      contextRef="S000004224"
      decimals="4"
      id="x_2aabcd10-f340-4bfc-801e-c486dc653ed8"
      unitRef="pure">0.84</oef:PortfolioTurnoverRate>
    <oef:StrategyHeading
      contextRef="S000004224"
      id="x_9fa32512-0851-4575-b642-ba964a50ec48">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-weight:bold;"&gt;Principal investment strategies&lt;/span&gt;</oef:StrategyHeading>
    <oef:StrategyNarrativeTextBlock
      contextRef="S000004224"
      id="a0ab78d4-331c-4b25-ab16-2817343bb95c">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;margin-left:3.76%;"&gt;GMO seeks to achieve the Fund&#x2019;s investment objective by investing the Fund&#x2019;s assets primarily in non-U.S. developed market &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;equities. GMO selects the securities the Fund buys and sells based on its evaluation of companies&#x2019; published financial information, securities&#x2019; prices, equity and other markets, the overall global economy, and governmental policies. &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;margin-left:3.76%;"&gt;In selecting securities for the Fund, GMO uses a combination of proprietary quantitative investment methods to identify &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;international equities GMO believes have positive return potential relative to other international equities. Some of these methods evaluate individual companies or groups of companies based on the ratio of their security price to historical financial information and forecasted financial information, such as return on invested capital, profitability, cash flow and earnings, and a comparison of these ratios to current and historical averages. Other methods focus on patterns of information, such as price movement or volatility of an asset class, security, or market, and macroeconomic factors. In constructing the Fund&#x2019;s portfolio, GMO also considers a position size, sector and industry exposure, country and region exposure, currencies, market capitalization, liquidity, and transaction costs. At times, the Fund may have substantial exposure to a single asset class, industry, sector, country, region, issuer, or currency and companies with similar market capitalizations. The Fund may invest in securities of companies of any market capitalization. GMO also may consider ESG (environmental, social and governance) criteria. For example, GMO generally avoids investing the Fund&#x2019;s assets in companies engaged in the manufacture, supply, or distribution of cluster munitions, as well as companies primarily involved in the mining and production of thermal coal. The factors GMO considers and investment methods GMO uses can change over time.&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;margin-left:3.76%;"&gt;As an alternative to investing directly in equities, the Fund may invest in exchange-traded and over-the-counter (OTC) derivatives &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;and exchange-traded funds (ETFs). The Fund also may invest in derivatives and ETFs in an attempt to obtain or adjust elements of its long or short investment exposure. Derivatives used may include futures, options, forward currency contracts, and swap contracts. In addition, the Fund may lend its portfolio securities.&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;margin-left:3.76%;"&gt;Under normal circumstances, the Fund invests directly and indirectly (through underlying funds or derivatives) at least 80% of its &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;assets in equities (see &#x201c;Name Policies&#x201d;).&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;margin-left:3.76%;"&gt;The Fund also may invest in U.S. Treasury Fund, in money market funds unaffiliated with GMO, and directly in the types of &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;investments typically held by money market funds.&lt;/span&gt;</oef:StrategyNarrativeTextBlock>
    <oef:RiskTextBlock
      contextRef="S000004224_RiskLoseMoneyMember"
      id="c9062fe9-f3e5-4789-a388-0ec4271be900">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;Many factors can affect this value, and you may lose money by investing in the Fund.&lt;/span&gt;</oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="S000004224_RiskNotInsuredDepositoryInstitutionMember"
      id="x_1a665aad-41df-414d-9ff7-05fb61b599f2">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;An investment in the Fund is not a bank deposit and is not insured or guaranteed by the FDIC or &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;any government agency.&lt;/span&gt;</oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="S000004224_MarketRiskEquitiesRiskMember"
      id="x_8a119603-e071-4fed-9c72-2bb8e4eebe7a">&lt;span style="color:#000000;font-family:Times New Roman;font-size:8pt;"&gt;&#x25cf;&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-style:italic;"&gt;Market Risk &#x2013; Equities &#x2013; &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;The market price of an equity in the Fund&#x2019;s portfolio may decline due to factors affecting the issuer or its industry or the economy and equity markets generally. If the Fund purchases an equity for less than its fundamental fair (or intrinsic) value as assessed by GMO, the Fund runs the risk that the market price of the equity will not appreciate or will decline (for example, if GMO&#x2019;s assessment proves to be incorrect or the market fails to recognize the equity&#x2019;s intrinsic value). The Fund also may purchase equities that typically trade at higher multiples of current earnings than other securities, and the market prices of these equities often are more sensitive to changes in future earnings expectations and interest rates than the market prices of equities trading at lower multiples. Declines in stock market prices generally are likely to reduce the net asset value of the Fund&#x2019;s shares.&lt;/span&gt;</oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="S000004224_ManagementandOperationalRiskMember"
      id="x_4e84420c-77ee-4c05-bb13-e1a3ab8754a0">&lt;span style="color:#000000;font-family:Times New Roman;font-size:8pt;"&gt;&#x25cf;&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-style:italic;"&gt;Management and Operational Risk&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; &#x2013; The Fund runs the risk that GMO&#x2019;s investment techniques will fail to produce intended results.&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;GMO uses quantitative models as part of its investment process. GMO&#x2019;s models may not accurately predict future market movements. In addition, GMO&#x2019;s models rely on assumptions and data that are subject to limitations (e.g., inaccuracies, staleness) that could adversely affect their predictive value.&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; The Fund also runs the risk that GMO&#x2019;s assessment of an investment, including a &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;security&#x2019;s fundamental fair (or intrinsic) value, is wrong or that deficiencies in GMO&#x2019;s or another service provider&#x2019;s internal systems or controls will cause losses for the Fund or impair Fund operations.&lt;/span&gt;</oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="S000004224_NonUSInvestmentRiskMember"
      id="x_605ad6a7-8ae7-4955-b028-8054639617fc">&lt;span style="color:#000000;font-family:Times New Roman;font-size:8pt;"&gt;&#x25cf;&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-style:italic;"&gt;Non-U.S. Investment Risk&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; &#x2013; The market prices of many non-U.S. securities fluctuate more than those of U.S. securities. Many non-U.S. securities markets are less stable, smaller, less liquid, and less regulated than U.S. securities markets, and the cost of trading in those markets often is higher than in U.S. securities markets. In addition, non-U.S. securities issuers often are not subject to as much regulation as U.S. issuers, and the reporting, recordkeeping, accounting, custody, and auditing standards to which those issuers are subject often are not as rigorous as U.S. standards. In addition, the Fund is subject to taxation by countries other than the United States, including potentially on a retroactive basis, on (i) capital gains it realizes or dividends, interest, or other amounts it realizes or accrues in respect of non-U.S. investments; (ii) transactions in those investments; and (iii) repatriation of proceeds generated from the sale or other disposition of those investments.&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; Also, the Fund needs a license to invest directly in securities &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;traded in many non-U.S. securities markets, and the Fund is subject to the risk that its license is terminated or suspended. In some non-U.S. securities markets, prevailing custody and trade settlement practices (e.g., the requirement to pay for securities prior to receipt) expose the Fund to credit and other risks. Further, adverse changes in investment regulations, capital requirements or exchange controls could adversely affect the value of the Fund&#x2019;s investments. The risks above (such as substantial price fluctuations &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;margin-left:0.00%;"&gt;and market instability, illiquidity and lack of regulation) and other risks (e.g., nationalization, expropriation or other confiscation of assets of non-U.S. issuers, difficulties enforcing legal judgments or contractual rights and geopolitical risks) tend to be higher for investments in the securities of issuers tied economically to emerging countries. The economies of emerging countries often depend &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;predominantly on only a few industries or commodities and often are more volatile than the economies of developed countries.&lt;/span&gt;</oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="S000004224_MarketDisruptionandGeopoliticalRiskMember"
      id="x_6e69a9c3-909e-49bf-b45e-e2757aca155c">&lt;span style="color:#000000;font-family:Times New Roman;font-size:8pt;"&gt;&#x25cf;&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-style:italic;"&gt;Market Disruption and Geopolitical Risk&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; &#x2013; Geopolitical and other events (e.g., wars, pandemics, sanctions, terrorism, diplomatic tensions, dramatic changes in regulatory and/or foreign policy, cyberattacks, and rapid technological developments such as artificial intelligence) often disrupt securities markets and adversely affect the general economy or particular economies and markets. Those events, as well as other changes in non-U.S. and U.S. economic and political conditions, could exacerbate other risks or otherwise reduce the value of the Fund&#x2019;s investments.&lt;/span&gt;</oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="S000004224_CurrencyRiskMember"
      id="x_77042cd4-8590-41aa-917d-29035e487c2f">&lt;span style="color:#000000;font-family:Times New Roman;font-size:8pt;"&gt;&#x25cf;&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-style:italic;"&gt;Currency Risk&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; &#x2013; Fluctuations in exchange rates can adversely affect the market value of the Fund&#x2019;s foreign currency holdings and investments denominated in foreign currencies.&lt;/span&gt;</oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="S000004224_FocusedInvestmentRiskMember"
      id="x_30b6669c-85c5-4bf5-a846-d4fd8eee2096">&lt;span style="color:#000000;font-family:Times New Roman;font-size:8pt;"&gt;&#x25cf;&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-style:italic;"&gt;Focused Investment Risk&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; &#x2013; Investments in countries, regions, asset classes, sectors, industries, currencies, or issuers that are subject to the same or similar risk factors and investments whose market prices are closely correlated are subject to higher overall risk than investments that are more diversified or whose market prices are not as closely correlated.&lt;/span&gt;</oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="S000004224_IlliquidityRiskMember"
      id="e6c2dd91-c4cf-4b3d-b68e-621e5616c511">&lt;span style="color:#000000;font-family:Times New Roman;font-size:8pt;"&gt;&#x25cf;&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-style:italic;"&gt;Illiquidity Risk&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; &#x2013; Low trading volume, lack of a market maker, large position size, or legal restrictions increase the risk that the Fund or an underlying fund is limited or prevented from selling particular securities or closing derivative positions at desirable prices at a particular time or at all.&lt;/span&gt;</oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="S000004224_DerivativesandShortSalesRiskMember"
      id="e314b5c4-a797-49eb-981b-702ca9647fe4">&lt;span style="color:#000000;font-family:Times New Roman;font-size:8pt;"&gt;&#x25cf;&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-style:italic;"&gt;Derivatives and Short Sales Risk&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; &#x2013; The use of derivatives involves the risk that their value may not change as expected relative to changes in the value of the underlying assets, pools of assets, rates, currencies or indices. Derivatives also present other risks, including market risk, illiquidity risk, currency risk, credit risk, leveraging risk, commodities risk and counterparty risk. The market price of an option is affected by many factors, including changes in the market prices or dividend rates of underlying securities (or in the case of indices, the securities in such indices); the time remaining before expiration; changes in interest rates or exchange rates; and changes in the actual or perceived volatility of the relevant index or underlying securities. The Fund typically creates short investment exposure by selling securities short or by taking a derivative position in which the value of the derivative moves in the opposite direction from the price of an underlying asset, pool of assets, rate, currency or index. Specifically, the net asset value of the Fund&#x2019;s shares will be adversely affected if the securities or other assets that are the subject of the Fund&#x2019;s short exposures appreciate in value. The risk of loss associated with derivatives that provide short investment exposure and short sales of securities is theoretically unlimited.&lt;/span&gt;</oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="S000004224_CounterpartyRiskMember"
      id="ce3d1ae2-b713-41a6-9a78-ef39c277b0af">&lt;span style="color:#000000;font-family:Times New Roman;font-size:8pt;"&gt;&#x25cf;&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-style:italic;"&gt;Counterparty Risk&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; &#x2013; The Fund runs the risk that the counterparty to a derivatives contract or a clearing member used by the Fund to hold a cleared derivatives contract is unable or unwilling to make timely settlement payments, return the Fund&#x2019;s collateral or otherwise honor its obligations.&lt;/span&gt;</oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="S000004224_LeveragingRiskMember"
      id="b7c33826-f14e-4cc6-be26-efb529dd9881">&lt;span style="color:#000000;font-family:Times New Roman;font-size:8pt;"&gt;&#x25cf;&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-style:italic;"&gt;Leveraging Risk&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; &#x2013; The use of derivatives, short sales and securities lending can create leverage. Leverage increases the Fund&#x2019;s losses when the value of its investments (including derivatives) declines. In addition, the Fund&#x2019;s portfolio will be leveraged if it exercises its right to delay payment on a redemption and the value of the Fund&#x2019;s assets declines between the time a redemption request is treated as being received by the Fund and the time the Fund liquidates assets to fund that redemption.&lt;/span&gt;</oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="S000004224_SmallerCompanyRiskMember"
      id="x_7a5abad5-5d09-4144-8671-3e67fe9bbda7">&lt;span style="color:#000000;font-family:Times New Roman;font-size:8pt;"&gt;&#x25cf;&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-style:italic;"&gt;Smaller Company Risk&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; &#x2013; Smaller companies may have limited product lines, markets, or financial resources, lack the competitive strength of larger companies, have less experienced managers or depend on a few key employees. The securities of companies with smaller market capitalizations often are less widely held and trade less frequently and in lesser quantities, and their market prices often fluctuate more, than the securities of companies with larger market capitalizations.&lt;/span&gt;</oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="S000004224_LargeTransactionsRiskMember"
      id="a06f23f7-79e6-4955-9609-ef20c660fece">&lt;span style="color:#000000;font-family:Times New Roman;font-size:8pt;"&gt;&#x25cf;&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-style:italic;"&gt;Large Transactions Risk&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; &#x2013; To the extent that a large number of shares of the Fund is held by a single shareholder (e.g., an institutional investor or another GMO Fund) or a group of shareholders with a common investment strategy (e.g., GMO asset allocation accounts), the Fund is subject to the risk that a redemption by (or caused by) that shareholder or group will require the Fund to sell investments at disadvantageous prices, disrupt the Fund&#x2019;s operations, lead to temporary overexposure to the Fund&#x2019;s intended investment program or force the Fund&#x2019;s liquidation. The Fund also may be subject to these effects when a number of shareholders collectively redeem or sell a large amount of Fund shares.&lt;/span&gt;</oef:RiskTextBlock>
    <oef:BarChartAndPerformanceTableHeading
      contextRef="S000004224"
      id="x_570705c2-01a8-49f5-82a4-17159e43a67b">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-weight:bold;"&gt;Performance&lt;/span&gt;</oef:BarChartAndPerformanceTableHeading>
    <oef:PerformanceNarrativeTextBlock
      contextRef="S000004224"
      id="x_175ef0a2-1380-49db-b5d8-16a872d18b69">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;margin-left:3.76%;"&gt;The bar chart and table below provide some indication of the risks of investing in the Fund by showing changes in the Fund&#x2019;s &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;annual total returns from year to year for the periods indicated and by comparing the Fund&#x2019;s average annual total returns for different calendar periods with those of a broad-based securities market index.&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; Share classes not shown would have substantially similar annual &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;returns to those below because all share classes invest in the same portfolio of securities. Annual returns vary among share classes to the extent that they bear different expenses. Share classes that bear higher expenses than the share classes shown below would have lower returns. &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;After-tax returns are calculated using the historical highest individual federal marginal income tax rates and do not reflect the &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;impact of state and local taxes.&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; Actual after-tax returns depend on your tax situation and may differ from those shown. After-tax returns &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;shown are not relevant if you are tax-exempt or if you hold your Fund shares through tax-advantaged arrangements (such as a 401(k) plan or individual retirement account). &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;After-tax returns are shown for Class III shares only; after-tax returns for other classes &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;will vary.&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; Updated performance information for the Fund is available at &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;www.gmo.com&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;. &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;Past performance (before and after taxes) is not an indication of future performance.&lt;/span&gt;</oef:PerformanceNarrativeTextBlock>
    <oef:PerformanceInformationIllustratesVariabilityOfReturns
      contextRef="S000004224"
      id="f8e0288e-b2ff-4d05-9f62-7fd74944c8e1">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;margin-left:3.76%;"&gt;The bar chart and table below provide some indication of the risks of investing in the Fund by showing changes in the Fund&#x2019;s &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;annual total returns from year to year for the periods indicated and by comparing the Fund&#x2019;s average annual total returns for different calendar periods with those of a broad-based securities market index.&lt;/span&gt;</oef:PerformanceInformationIllustratesVariabilityOfReturns>
    <oef:PerformanceTableUsesHighestFederalRate
      contextRef="S000004224"
      id="x_243f98ef-ae2e-49b9-ab0a-b0852cb09ef9">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;After-tax returns are calculated using the historical highest individual federal marginal income tax rates and do not reflect the &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;impact of state and local taxes.&lt;/span&gt;</oef:PerformanceTableUsesHighestFederalRate>
    <oef:PerformanceTableNotRelevantToTaxDeferred
      contextRef="S000004224"
      id="x_1c2c415e-e7fa-48cd-86a6-d57515bf199b">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; Actual after-tax returns depend on your tax situation and may differ from those shown. After-tax returns &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;shown are not relevant if you are tax-exempt or if you hold your Fund shares through tax-advantaged arrangements (such as a 401(k) plan or individual retirement account). &lt;/span&gt;</oef:PerformanceTableNotRelevantToTaxDeferred>
    <oef:PerformanceTableOneClassOfAfterTaxShown
      contextRef="S000004224"
      id="x_82b5a98c-8230-4a70-9efb-f8a557f0d8c0">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;After-tax returns are shown for Class III shares only; after-tax returns for other classes &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;will vary.&lt;/span&gt;</oef:PerformanceTableOneClassOfAfterTaxShown>
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      contextRef="S000004224"
      id="x_27533d65-7b5c-42ea-b785-cb3c5b7576d9">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;www.gmo.com&lt;/span&gt;</oef:PerformanceAvailabilityWebSiteAddress>
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      contextRef="S000004224"
      id="e26b0cbd-a579-420a-be24-f5bd41eec17f">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;Past performance (before and after taxes) is not an indication of future performance.&lt;/span&gt;</oef:PerformancePastDoesNotIndicateFuture>
    <oef:BarChartHeading
      contextRef="S000004224"
      id="x_3e95330c-9daf-4d7a-9692-620c355c353f">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-weight:bold;"&gt;Annual Total Returns/Class III Shares&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:6.5pt;font-weight:bold;position:relative;top:-2.75pt;"&gt;1&lt;/span&gt; &lt;br/&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;Years Ending December 31&lt;/span&gt;</oef:BarChartHeading>
    <oef:BarChartClosingTextBlock
      contextRef="S000004224"
      id="af1204b3-ef69-4815-9b22-c3620a308f89">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;Highest Quarter:&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;18.56%&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;-sec-ix-hidden:x_6e81ddf3-e633-4b00-8a25-88209b857d9a"&gt;4Q 2022&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;Lowest Quarter:&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;-23.97%&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;-sec-ix-hidden:c099a4e2-78ac-4057-8e26-8871d3b77be8"&gt;1Q 2020&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;Year-to-Date:&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;9.74%&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;As of&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;3/31/2025&lt;/span&gt;</oef:BarChartClosingTextBlock>
    <oef:HighestQuarterlyReturnLabel
      contextRef="S000004224_C000011881"
      id="x_6e31c5ab-7303-43ae-8c27-e5cb1cd38afa">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;Highest Quarter:&lt;/span&gt;</oef:HighestQuarterlyReturnLabel>
    <oef:BarChartHighestQuarterlyReturn
      contextRef="S000004224_C000011881"
      decimals="4"
      id="addf74bf-0bbb-4c99-89c2-045874a0d996"
      unitRef="pure">0.1856</oef:BarChartHighestQuarterlyReturn>
    <oef:LowestQuarterlyReturnLabel
      contextRef="S000004224_C000011881"
      id="x_2a2ed103-e079-458f-bdad-d6b9e44d3081">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;Lowest Quarter:&lt;/span&gt;</oef:LowestQuarterlyReturnLabel>
    <oef:BarChartLowestQuarterlyReturn
      contextRef="S000004224_C000011881"
      decimals="4"
      id="e1a12ca9-3571-4340-9bfd-e1078aa08982"
      unitRef="pure">-0.2397</oef:BarChartLowestQuarterlyReturn>
    <oef:YearToDateReturnLabel
      contextRef="S000004224_C000011881"
      id="x_7224a0dd-aa2d-4735-9f32-2232b2467d83">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;Year-to-Date:&lt;/span&gt;</oef:YearToDateReturnLabel>
    <oef:BarChartYearToDateReturn
      contextRef="S000004224_C000011881"
      decimals="4"
      id="dc5016c7-69fd-4e85-bbf5-e4dfafcbe1f0"
      unitRef="pure">0.0974</oef:BarChartYearToDateReturn>
    <oef:BarChartYearToDateReturnDate
      contextRef="S000004224_C000011881"
      id="cc6a0e65-112d-4936-8fcd-776bb1216425">2025-03-31</oef:BarChartYearToDateReturnDate>
    <oef:PerformanceTableHeading
      contextRef="S000004224"
      id="x_7d787396-9d89-4c42-9e12-100708be21c3">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-weight:bold;"&gt;Average Annual Total Returns&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:6.5pt;font-weight:bold;position:relative;top:-2.75pt;"&gt;1&lt;/span&gt; &lt;br/&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;Periods Ending December 31, 2024&lt;/span&gt;</oef:PerformanceTableHeading>
    <oef:PerfInceptionDate
      contextRef="C000011881"
      id="df06ab28-260f-4b2f-ab27-fd1b58b231fe">1987-03-31</oef:PerfInceptionDate>
    <oef:AvgAnnlRtrPct
      contextRef="C000011881_01Jan2024_31Dec2024"
      decimals="4"
      id="bfd8b0dc-c829-4a06-bfef-8efc700c5d10"
      unitRef="pure">0.1298</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000011881_01Jan2020_31Dec2024"
      decimals="4"
      id="f0c619a8-66ad-41ea-8132-ae8a7fadc358"
      unitRef="pure">0.0799</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000011881_01Jan2015_31Dec2024"
      decimals="4"
      id="c014ba55-bbd3-4d1e-838a-e713096e2d69"
      unitRef="pure">0.0578</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000011881_31Mar1987_31Dec2024"
      decimals="4"
      id="x_2f4b88d2-6b67-468e-934b-2fe6644f8775"
      unitRef="pure">0.0732</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000011881_AfterTaxesOnDistributionsMember_01Jan2024_31Dec2024"
      decimals="4"
      id="x_1cdb63ec-1ef1-4f8b-977c-a6975fe59446"
      unitRef="pure">0.1193</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000011881_AfterTaxesOnDistributionsMember_01Jan2020_31Dec2024"
      decimals="4"
      id="x_01307c89-5002-4680-853f-fe8aac9fd72f"
      unitRef="pure">0.0652</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000011881_AfterTaxesOnDistributionsMember_01Jan2015_31Dec2024"
      decimals="4"
      id="x_10053dee-31be-420d-8ddb-a70463f4a0c2"
      unitRef="pure">0.0477</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000011881_AfterTaxesOnDistributionsMember_31Mar1987_31Dec2024"
      decimals="4"
      id="x_31d87cfa-e08a-4dec-8a6a-8cb35647929c"
      unitRef="pure">0.0593</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000011881_AfterTaxesOnDistributionsAndSalesMember_01Jan2024_31Dec2024"
      decimals="4"
      id="x_0c669f45-5c41-4305-995e-435966599d64"
      unitRef="pure">0.0845</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000011881_AfterTaxesOnDistributionsAndSalesMember_01Jan2020_31Dec2024"
      decimals="4"
      id="x_7fafe278-9960-4244-ae16-96c676f4b105"
      unitRef="pure">0.0597</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000011881_AfterTaxesOnDistributionsAndSalesMember_01Jan2015_31Dec2024"
      decimals="4"
      id="ba7779ad-1c49-4ddd-9d13-f5d49c4de535"
      unitRef="pure">0.0447</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000011881_AfterTaxesOnDistributionsAndSalesMember_31Mar1987_31Dec2024"
      decimals="4"
      id="x_28a7ad4f-5ac6-4c4f-8f54-39a471b8e9b5"
      unitRef="pure">0.0585</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000011881_MSCIEAFEIndexMember_01Jan2024_31Dec2024"
      decimals="4"
      id="x_6aa23b3a-48d8-4104-af2f-90bcb0d7a9e9"
      unitRef="pure">0.0382</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000011881_MSCIEAFEIndexMember_01Jan2020_31Dec2024"
      decimals="4"
      id="f2205c10-a521-4a6e-a0b4-c66bd54727c8"
      unitRef="pure">0.0473</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000011881_MSCIEAFEIndexMember_01Jan2015_31Dec2024"
      decimals="4"
      id="c2aacc60-65ea-4343-9252-a9ad96429b9c"
      unitRef="pure">0.0520</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000011881_MSCIEAFEIndexMember_31Mar1987_31Dec2024"
      decimals="4"
      id="d3cf79f7-5179-429a-85b1-afd5b9503c65"
      unitRef="pure">0.0522</oef:AvgAnnlRtrPct>
    <oef:PerfInceptionDate
      contextRef="C000011882"
      id="x_76d78678-c898-4e0c-9efd-46909e2e52a6">1998-01-09</oef:PerfInceptionDate>
    <oef:AvgAnnlRtrPct
      contextRef="C000011882_01Jan2024_31Dec2024"
      decimals="4"
      id="d9bb8c7e-914c-4cee-bbdb-c4ccb5c50987"
      unitRef="pure">0.1302</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000011882_01Jan2020_31Dec2024"
      decimals="4"
      id="e3219388-9444-437d-8160-a2a97e90dcc9"
      unitRef="pure">0.0806</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000011882_01Jan2015_31Dec2024"
      decimals="4"
      id="x_9dd9a217-948d-483d-83c3-16e18dc7f167"
      unitRef="pure">0.0584</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000011882_09Jan1998_31Dec2024"
      decimals="4"
      id="x_87aed175-bb3d-4de0-9ee9-ad78fe5f7805"
      unitRef="pure">0.0648</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000011882_MSCIEAFEIndexMember_01Jan2024_31Dec2024"
      decimals="4"
      id="x_39b3f9c7-a1b1-472e-a972-e33a11b9bba1"
      unitRef="pure">0.0382</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000011882_MSCIEAFEIndexMember_01Jan2020_31Dec2024"
      decimals="4"
      id="x_898926a0-87e1-41f7-811c-dab74759e41a"
      unitRef="pure">0.0473</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000011882_MSCIEAFEIndexMember_01Jan2015_31Dec2024"
      decimals="4"
      id="x_47e95ff8-e5ca-4705-a7a7-8f09eba1a04d"
      unitRef="pure">0.0520</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000011882_MSCIEAFEIndexMember_09Jan1998_31Dec2024"
      decimals="4"
      id="x_516762ce-9ae6-4ed0-a804-1cd8a53fb3ee"
      unitRef="pure">0.0506</oef:AvgAnnlRtrPct>
    <oef:PerfInceptionDate
      contextRef="C000213358"
      id="x_0147eb27-b9f0-4c7d-a54d-ee72fa6f1186">2021-05-24</oef:PerfInceptionDate>
    <oef:AvgAnnlRtrPct
      contextRef="C000213358_01Jan2024_31Dec2024"
      decimals="4"
      id="e7cecaa3-b167-48a9-80ad-f19f48f4ec47"
      unitRef="pure">0.1277</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000213358_24May2021_31Dec2024"
      decimals="4"
      id="x_6a752a21-65ad-43f5-9c1c-21c9d1d80ab5"
      unitRef="pure">0.0470</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000213358_MSCIEAFEIndexMember_01Jan2024_31Dec2024"
      decimals="4"
      id="x_07b04b6a-dba3-4b03-9cea-a909038adf64"
      unitRef="pure">0.0382</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000213358_MSCIEAFEIndexMember_09Jan1998_31Dec2024"
      decimals="4"
      id="x_0666a9d7-29f6-4745-b8ea-13a48a21e632"
      unitRef="pure">0.0180</oef:AvgAnnlRtrPct>
    <oef:ObjectiveHeading
      contextRef="S000004913"
      id="x_500cab56-5b0f-47f3-bb6f-10bbd4d7e34a">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-weight:bold;"&gt;Investment objective&lt;/span&gt;</oef:ObjectiveHeading>
    <oef:ObjectivePrimaryTextBlock
      contextRef="S000004913"
      id="x_17ef2b46-2a42-40a3-afa0-75fee127610c">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;Total return.&lt;/span&gt;</oef:ObjectivePrimaryTextBlock>
    <oef:ExpenseHeading
      contextRef="S000004913"
      id="d1861aa6-f940-4874-a2d6-bcf36c44ff33">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-weight:bold;"&gt;Fees and expenses&lt;/span&gt;</oef:ExpenseHeading>
    <oef:ExpenseNarrativeTextBlock
      contextRef="S000004913"
      id="a39306e9-2558-40a0-a6ce-98f3cf6b9505">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;margin-left:3.76%;"&gt;The table below describes the fees and expenses that you may bear for each class of shares if you buy, hold, and sell shares of the &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;Fund. You may pay other fees, such as brokerage commissions and other fees to financial intermediaries, which are not reflected in the table and example below.&lt;/span&gt;</oef:ExpenseNarrativeTextBlock>
    <oef:OperatingExpensesCaption
      contextRef="S000004913"
      id="x_60ac3b7a-c4b1-48b9-b436-4dbdf5eb6e55">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-weight:bold;"&gt;Annual Fund operating expenses &lt;/span&gt; &lt;br/&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;(expenses that you bear each year as a percentage of the value of your investment)&lt;/span&gt;</oef:OperatingExpensesCaption>
    <oef:ManagementFeesOverAssets
      contextRef="S000004913_C000013282"
      decimals="4"
      id="ce030d54-32a4-458c-ba4f-11cba6374745"
      unitRef="pure">0.0065</oef:ManagementFeesOverAssets>
    <oef:ManagementFeesOverAssets
      contextRef="S000004913_C000013283"
      decimals="4"
      id="x_72dc7524-14a8-4eb1-bfef-2641c3c42175"
      unitRef="pure">0.0060</oef:ManagementFeesOverAssets>
    <oef:ManagementFeesOverAssets
      contextRef="S000004913_C000213365"
      decimals="4"
      id="e3b13755-d0b5-497f-9dc8-ec7bd8bc396c"
      unitRef="pure">0.0065</oef:ManagementFeesOverAssets>
    <oef:ManagementFeesOverAssets
      contextRef="S000004913_C000213364"
      decimals="4"
      id="x_63bab06d-4ca1-4c90-846f-7846c42fc3db"
      unitRef="pure">0.0065</oef:ManagementFeesOverAssets>
    <oef:OtherExpensesOverAssets
      contextRef="S000004913_C000013282"
      decimals="4"
      id="d3c4811e-c61c-4b5b-9377-da58c9006f31"
      unitRef="pure">0.0010</oef:OtherExpensesOverAssets>
    <oef:OtherExpensesOverAssets
      contextRef="S000004913_C000013283"
      decimals="4"
      id="aa188308-debb-47d3-8dc6-8d555e76446a"
      unitRef="pure">0.0010</oef:OtherExpensesOverAssets>
    <oef:OtherExpensesOverAssets
      contextRef="S000004913_C000213365"
      decimals="4"
      id="x_50eeb749-1ea4-439e-925b-2ee108b9b950"
      unitRef="pure">0.0010</oef:OtherExpensesOverAssets>
    <oef:OtherExpensesOverAssets
      contextRef="S000004913_C000213364"
      decimals="4"
      id="x_4def33c2-df10-49a0-94a3-f7b09598d426"
      unitRef="pure">0.0539</oef:OtherExpensesOverAssets>
    <oef:ExpensesOverAssets
      contextRef="S000004913_C000013282"
      decimals="4"
      id="x_3c0b1152-f481-477d-96c7-a49ff0b16735"
      unitRef="pure">0.0075</oef:ExpensesOverAssets>
    <oef:ExpensesOverAssets
      contextRef="S000004913_C000013283"
      decimals="4"
      id="bf033f7e-128b-4350-b897-eec284525d91"
      unitRef="pure">0.0070</oef:ExpensesOverAssets>
    <oef:ExpensesOverAssets
      contextRef="S000004913_C000213365"
      decimals="4"
      id="x_9edef348-0f43-4ce6-9a8f-a25c9d06c2ff"
      unitRef="pure">0.0075</oef:ExpensesOverAssets>
    <oef:ExpensesOverAssets
      contextRef="S000004913_C000213364"
      decimals="4"
      id="x_347edf58-20a7-430f-a537-09fc30900cb7"
      unitRef="pure">0.0604</oef:ExpensesOverAssets>
    <oef:FeeWaiverOrReimbursementOverAssets
      contextRef="S000004913_C000013282"
      decimals="4"
      id="a9f9d1b2-342d-40ce-91e4-fbc7ac4c7dc6"
      unitRef="pure">-0.0006</oef:FeeWaiverOrReimbursementOverAssets>
    <oef:FeeWaiverOrReimbursementOverAssets
      contextRef="S000004913_C000013283"
      decimals="4"
      id="x_3743220c-6ed6-4b31-b85f-177398a923b6"
      unitRef="pure">-0.0006</oef:FeeWaiverOrReimbursementOverAssets>
    <oef:FeeWaiverOrReimbursementOverAssets
      contextRef="S000004913_C000213365"
      decimals="4"
      id="x_125eaeb6-c5f3-48d2-a887-df9e6c928269"
      unitRef="pure">-0.0006</oef:FeeWaiverOrReimbursementOverAssets>
    <oef:FeeWaiverOrReimbursementOverAssets
      contextRef="S000004913_C000213364"
      decimals="4"
      id="c9ed4cad-5544-4ab4-876f-1c1ac0025d17"
      unitRef="pure">-0.0523</oef:FeeWaiverOrReimbursementOverAssets>
    <oef:NetExpensesOverAssets
      contextRef="S000004913_C000013282"
      decimals="4"
      id="e34df97c-7a85-4b25-aba7-f9ad62cc5661"
      unitRef="pure">0.0069</oef:NetExpensesOverAssets>
    <oef:NetExpensesOverAssets
      contextRef="S000004913_C000013283"
      decimals="4"
      id="x_074fd572-49fa-4c0e-8ea5-2b5c4022ee3f"
      unitRef="pure">0.0064</oef:NetExpensesOverAssets>
    <oef:NetExpensesOverAssets
      contextRef="S000004913_C000213365"
      decimals="4"
      id="c1b8adf1-5626-4750-8766-76fc9daed591"
      unitRef="pure">0.0069</oef:NetExpensesOverAssets>
    <oef:NetExpensesOverAssets
      contextRef="S000004913_C000213364"
      decimals="4"
      id="x_398f31ab-cc05-4840-b6b0-650b292949c4"
      unitRef="pure">0.0081</oef:NetExpensesOverAssets>
    <oef:FeeWaiverOrReimbursementOverAssetsDateOfTermination
      contextRef="S000004913"
      id="e8f5418f-ff3a-48a2-8139-1770bfd1015f">&lt;span style="color:#000000;font-family:Times New Roman;font-size:8pt;font-style:italic;"&gt;June 30, 2026&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:8pt;font-style:italic;"&gt;June 30, 2026&lt;/span&gt;</oef:FeeWaiverOrReimbursementOverAssetsDateOfTermination>
    <oef:ExpenseExampleHeading
      contextRef="S000004913"
      id="x_3016ad20-f4b0-4acb-944f-3f5534a4563d">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-weight:bold;"&gt;Example&lt;/span&gt;</oef:ExpenseExampleHeading>
    <oef:ExpenseExampleNarrativeTextBlock
      contextRef="S000004913"
      id="x_2b4b7905-d10c-47d1-a101-e3579b50294e">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;margin-left:3.76%;"&gt;This example is intended to help you compare the cost of investing in the Fund with the cost of investing in other funds. The &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;example assumes that you invest $10,000 in the Fund for the time periods indicated, regardless of whether or not you redeem your shares at the end of such periods. The example also assumes that your investment has a 5% return each year and that the Fund&#x2019;s operating expenses remain the same as those shown in the table. The one year amounts shown reflect the expense reimbursement and waiver noted in the expense table. Although your actual costs may be higher or lower, based on these assumptions your costs would be:&lt;/span&gt;</oef:ExpenseExampleNarrativeTextBlock>
    <oef:ExpenseExampleYear01
      contextRef="S000004913_C000013282"
      decimals="INF"
      id="d246db8f-9db8-4491-ba0f-6b93de922f24"
      unitRef="USD">70</oef:ExpenseExampleYear01>
    <oef:ExpenseExampleYear03
      contextRef="S000004913_C000013282"
      decimals="INF"
      id="x_41e8a14a-3ee7-4cc6-b6c7-5ecec521456a"
      unitRef="USD">234</oef:ExpenseExampleYear03>
    <oef:ExpenseExampleYear05
      contextRef="S000004913_C000013282"
      decimals="INF"
      id="d99957bd-98d5-4086-b558-434564502b7c"
      unitRef="USD">411</oef:ExpenseExampleYear05>
    <oef:ExpenseExampleYear10
      contextRef="S000004913_C000013282"
      decimals="INF"
      id="e9240878-8c71-4ab0-8469-0701d27f1add"
      unitRef="USD">925</oef:ExpenseExampleYear10>
    <oef:ExpenseExampleYear01
      contextRef="S000004913_C000013283"
      decimals="INF"
      id="df962ac7-01fc-411c-84b5-d96ccf39fa1a"
      unitRef="USD">65</oef:ExpenseExampleYear01>
    <oef:ExpenseExampleYear03
      contextRef="S000004913_C000013283"
      decimals="INF"
      id="x_1bfbfde4-cf9f-4a63-8330-b93f7d272a0b"
      unitRef="USD">218</oef:ExpenseExampleYear03>
    <oef:ExpenseExampleYear05
      contextRef="S000004913_C000013283"
      decimals="INF"
      id="c9f039f4-746d-49d8-b98e-91ab0d6780b6"
      unitRef="USD">384</oef:ExpenseExampleYear05>
    <oef:ExpenseExampleYear10
      contextRef="S000004913_C000013283"
      decimals="INF"
      id="x_57efcdc1-f019-4def-bfed-a1b88c7944d4"
      unitRef="USD">865</oef:ExpenseExampleYear10>
    <oef:ExpenseExampleYear01
      contextRef="S000004913_C000213365"
      decimals="INF"
      id="x_8b057fed-646e-4271-b6f3-3895791199b9"
      unitRef="USD">70</oef:ExpenseExampleYear01>
    <oef:ExpenseExampleYear03
      contextRef="S000004913_C000213365"
      decimals="INF"
      id="x_8e677cfe-04da-4c72-ade9-6f1de3824774"
      unitRef="USD">234</oef:ExpenseExampleYear03>
    <oef:ExpenseExampleYear05
      contextRef="S000004913_C000213365"
      decimals="INF"
      id="adf40684-3383-4d55-9226-18dc3fe3956b"
      unitRef="USD">411</oef:ExpenseExampleYear05>
    <oef:ExpenseExampleYear10
      contextRef="S000004913_C000213365"
      decimals="INF"
      id="x_291a5004-22a4-4cc4-9d0c-24173b6414f8"
      unitRef="USD">925</oef:ExpenseExampleYear10>
    <oef:ExpenseExampleYear01
      contextRef="S000004913_C000213364"
      decimals="INF"
      id="x_681d3c5d-b22c-4a19-a37e-5de8c55bf122"
      unitRef="USD">83</oef:ExpenseExampleYear01>
    <oef:ExpenseExampleYear03
      contextRef="S000004913_C000213364"
      decimals="INF"
      id="x_485ed438-fb22-4f8f-8c18-c7c084a667f3"
      unitRef="USD">1328</oef:ExpenseExampleYear03>
    <oef:ExpenseExampleYear05
      contextRef="S000004913_C000213364"
      decimals="INF"
      id="x_7836d271-b694-45cd-9197-40cd2e1ffb1d"
      unitRef="USD">2548</oef:ExpenseExampleYear05>
    <oef:ExpenseExampleYear10
      contextRef="S000004913_C000213364"
      decimals="INF"
      id="x_233753dd-f4cd-49e8-9121-e9d035d35a03"
      unitRef="USD">5488</oef:ExpenseExampleYear10>
    <oef:PortfolioTurnoverHeading
      contextRef="S000004913"
      id="x_37f535af-65d4-4141-82c5-f895ba2c3576">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-weight:bold;"&gt;Portfolio turnover&lt;/span&gt;</oef:PortfolioTurnoverHeading>
    <oef:PortfolioTurnoverTextBlock
      contextRef="S000004913"
      id="x_5aeab1da-8b31-4278-9079-ab0b21d3ddb0">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;margin-left:3.76%;"&gt;The Fund pays transaction costs, such as commissions, when it buys and sells securities. A higher portfolio turnover rate may &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;result in higher transaction costs and, for holders of Fund shares subject to U.S. taxes, higher income taxes. These transaction costs, which are not reflected in Annual Fund operating expenses or in the Example, affect the Fund&#x2019;s performance.&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; During its fiscal year &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;ended February 28, 2025, the Fund&#x2019;s portfolio turnover rate (excluding short-term investments) was &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;59&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;% of the average value of its portfolio securities.&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; That portfolio turnover rate includes investments in U.S. Treasury Fund, which the Fund uses as a short-term &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;investment vehicle for cash management. The Fund&#x2019;s portfolio turnover rate during its fiscal year ended February 28, 2025, excluding transactions in U.S. Treasury Fund and other short-term investments, was 49% of the average value of its portfolio securities.&lt;/span&gt;</oef:PortfolioTurnoverTextBlock>
    <oef:PortfolioTurnoverRate
      contextRef="S000004913"
      decimals="4"
      id="d71f075e-076e-4cc7-ba42-992cdc93e349"
      unitRef="pure">0.59</oef:PortfolioTurnoverRate>
    <oef:StrategyHeading
      contextRef="S000004913"
      id="a4c6db60-97dc-4472-99db-56e7d9e6d893">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-weight:bold;"&gt;Principal investment strategies&lt;/span&gt;</oef:StrategyHeading>
    <oef:StrategyNarrativeTextBlock
      contextRef="S000004913"
      id="a87ef36d-4dd3-4056-9cb3-f81c710accad">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;margin-left:3.76%;"&gt;GMO seeks to achieve the Fund&#x2019;s investment objective by investing the Fund&#x2019;s assets primarily in international equity markets. &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;GMO selects the securities the Fund buys and sells based on its evaluation of companies&#x2019; published financial information, securities&#x2019; &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;margin-left:0%;"&gt;prices, equity and other markets, the overall global economy, and governmental policies. The Fund seeks to capitalize opportunistically &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;on what GMO believes to be market dislocations within the international equity markets.&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;margin-left:3.76%;"&gt;In selecting securities for the Fund, GMO uses a combination of proprietary quantitative investment methods to identify &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;international equities GMO believes have positive return potential relative to other international equities. A key component of the process is GMO&#x2019;s proprietary methodology for assessing values of company tangible and intangible assets and generating equity return forecasts, which are then incorporated into relative valuations models. Some of these methods evaluate individual companies or groups of companies based on the ratio of their security price to historical financial information and forecasted financial information, such as return on invested capital, profitability, cash flow and earnings, and a comparison of these ratios to current and historical averages. Other methods focus on patterns of information, such as price movement or volatility of an asset class, security, or market, and macroeconomic factors. In constructing the Fund&#x2019;s portfolio, GMO also considers position size, sector and industry exposure, country and region exposure, currencies, market capitalization, liquidity, and transaction costs. GMO may also consider ESG (environmental, social and governance) criteria. For example, GMO generally avoids investing the Fund&#x2019;s assets in companies engaged in the manufacture, supply, or distribution of cluster munitions, as well as companies primarily involved in the mining and production of thermal coal. At times, the Fund may have substantial exposure to a single asset class, industry, sector, country, region, issuer, or currency and companies with similar market capitalizations. The Fund may invest in securities of companies of any market capitalization. The factors GMO considers and investment methods GMO uses can change over time. &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;margin-left:3.76%;"&gt;As an alternative to investing directly in equities, the Fund may invest in exchange-traded and over-the-counter (OTC) derivatives &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;and exchange-traded funds (ETFs). The Fund also may invest in derivatives and ETFs in an attempt to obtain or adjust elements of its long or short investment exposure. Derivatives used may include futures, options, forward currency contracts, and swap contracts. In addition, the Fund may lend its portfolio securities.&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;margin-left:3.76%;"&gt;The Fund primarily invests directly and indirectly (e.g., through underlying funds or derivatives) in equities of companies tied &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;economically to developed countries other than the United States. Under normal circumstances, the Fund invests directly and indirectly at least 80% of its assets in equities (see &#x201c;Name Policies&#x201d;). &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;margin-left:3.76%;"&gt;The Fund also may invest in U.S. Treasury Fund, in money market funds unaffiliated with GMO, and directly in the types of &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;investments typically held by money market funds.&lt;/span&gt;</oef:StrategyNarrativeTextBlock>
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      contextRef="S000004913_RiskLoseMoneyMember"
      id="x_4ed037aa-5e2f-4069-b452-b114c35bb568">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;Many factors can affect this value, and you may lose money by investing in the Fund.&lt;/span&gt;</oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="S000004913_RiskNotInsuredDepositoryInstitutionMember"
      id="e89f62db-381e-4ead-a629-9a0559c8b5bf">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;An investment in the Fund is not a bank deposit and is not insured or guaranteed by the FDIC or &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;any government agency.&lt;/span&gt;</oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="S000004913_MarketRiskEquitiesRiskMember"
      id="a41fb3d3-0a57-4c0b-a5cd-0191bd58d079">&lt;span style="color:#000000;font-family:Times New Roman;font-size:8pt;"&gt;&#x25cf;&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-style:italic;"&gt;Market Risk &#x2013; Equities &#x2013; &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;The market price of an equity in the Fund&#x2019;s portfolio may decline due to factors affecting the issuer or its industry or the economy and equity markets generally. If the Fund purchases an equity for less than its fundamental fair (or intrinsic) value as assessed by GMO, the Fund runs the risk that the market price of the equity will not appreciate or will decline (for example, if GMO&#x2019;s assessment proves to be incorrect or the market fails to recognize the equity&#x2019;s intrinsic value). The Fund also may purchase equities that typically trade at higher multiples of current earnings than other securities, and the market prices of these equities often are more sensitive to changes in future earnings expectations and interest rates than the market prices of equities trading at lower multiples. Declines in stock market prices generally are likely to reduce the net asset value of the Fund&#x2019;s shares.&lt;/span&gt;</oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="S000004913_ManagementandOperationalRiskMember"
      id="x_18bf5f4c-ae98-419d-9827-d53c0e546aa3">&lt;span style="color:#000000;font-family:Times New Roman;font-size:8pt;"&gt;&#x25cf;&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-style:italic;"&gt;Management and Operational Risk&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; &#x2013; The Fund runs the risk that GMO&#x2019;s investment techniques will fail to produce intended results.&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;GMO uses quantitative models as part of its investment process. GMO&#x2019;s models may not accurately predict future market movements. In addition, GMO&#x2019;s models rely on assumptions and data that are subject to limitations (e.g., inaccuracies, staleness) that could adversely affect their predictive value.&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; The Fund also runs the risk that GMO&#x2019;s assessment of an investment, including a &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;security&#x2019;s fundamental fair (or intrinsic) value, is wrong or that deficiencies in GMO&#x2019;s or another service provider&#x2019;s internal systems or controls will cause losses for the Fund or impair Fund operations.&lt;/span&gt;</oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="S000004913_NonUSInvestmentRiskMember"
      id="f0c10834-c2a4-43d2-b95c-b5f0df583e76">&lt;span style="color:#000000;font-family:Times New Roman;font-size:8pt;"&gt;&#x25cf;&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-style:italic;"&gt;Non-U.S. Investment Risk&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; &#x2013; The market prices of many non-U.S. securities fluctuate more than those of U.S. securities. Many non-U.S. securities markets are less stable, smaller, less liquid, and less regulated than U.S. securities markets, and the cost of trading in those markets often is higher than in U.S. securities markets. In addition, non-U.S. securities issuers often are not subject to as much regulation as U.S. issuers, and the reporting, recordkeeping, accounting, custody, and auditing standards to which those issuers are subject often are not as rigorous as U.S. standards. In addition, the Fund is subject to taxation by countries other than the United States, including potentially on a retroactive basis, on (i) capital gains it realizes or dividends, interest, or other amounts it realizes or accrues in respect of non-U.S. investments; (ii) transactions in those investments; and (iii) repatriation of proceeds generated from the sale or other disposition of those investments.&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; Also, the Fund needs a license to invest directly in securities &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;traded in many non-U.S. securities markets, and the Fund is subject to the risk that its license is terminated or suspended. In some non-U.S. securities markets, prevailing custody and trade settlement practices (e.g., the requirement to pay for securities prior to receipt) expose the Fund to credit and other risks. Further, adverse changes in investment regulations, capital requirements or &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;margin-left:0.00%;"&gt;exchange controls could adversely affect the value of the Fund&#x2019;s investments. The risks above (such as substantial price fluctuations and market instability, illiquidity and lack of regulation) and other risks (e.g., nationalization, expropriation or other confiscation of assets of non-U.S. issuers, difficulties enforcing legal judgments or contractual rights and geopolitical risks) tend to be higher for investments in the securities of issuers tied economically to emerging countries. The economies of emerging countries often depend &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;predominantly on only a few industries or commodities and often are more volatile than the economies of developed countries.&lt;/span&gt;</oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="S000004913_MarketDisruptionandGeopoliticalRiskMember"
      id="x_40a4bd28-221d-4693-940e-d0d59d8ac390">&lt;span style="color:#000000;font-family:Times New Roman;font-size:8pt;"&gt;&#x25cf;&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-style:italic;"&gt;Market Disruption and Geopolitical Risk&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; &#x2013; Geopolitical and other events (e.g., wars, pandemics, sanctions, terrorism, diplomatic tensions, dramatic changes in regulatory and/or foreign policy, cyberattacks, and rapid technological developments such as artificial intelligence) often disrupt securities markets and adversely affect the general economy or particular economies and markets. Those events, as well as other changes in non-U.S. and U.S. economic and political conditions, could exacerbate other risks or otherwise reduce the value of the Fund&#x2019;s investments.&lt;/span&gt;</oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="S000004913_CurrencyRiskMember"
      id="x_4686daf5-e0a6-4925-bca6-e30190603d10">&lt;span style="color:#000000;font-family:Times New Roman;font-size:8pt;"&gt;&#x25cf;&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-style:italic;"&gt;Currency Risk&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; &#x2013; Fluctuations in exchange rates can adversely affect the market value of the Fund&#x2019;s foreign currency holdings and investments denominated in foreign currencies.&lt;/span&gt;</oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="S000004913_ValueInvestingRiskMember"
      id="x_8f1cce18-663e-4a65-855a-435a975facec">&lt;span style="color:#000000;font-family:Times New Roman;font-size:8pt;"&gt;&#x25cf;&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-style:italic;"&gt;Value Investing Risk&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; &#x2013; Issuers whose securities GMO believes are undervalued may not realize their business potential, may never be recognized by the market as being undervalued and/or may be appropriately priced notwithstanding GMO&#x2019;s assessment. These and other factors may cause the price of value stocks to decline, resulting in losses to the Fund.&lt;/span&gt;</oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="S000004913_IlliquidityRiskMember"
      id="bb300e99-d6ff-4358-9aff-24268d851533">&lt;span style="color:#000000;font-family:Times New Roman;font-size:8pt;"&gt;&#x25cf;&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-style:italic;"&gt;Illiquidity Risk&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; &#x2013; Low trading volume, lack of a market maker, large position size, or legal restrictions increase the risk that the Fund or an underlying fund is limited or prevented from selling particular securities or closing derivative positions at desirable prices at a particular time or at all.&lt;/span&gt;</oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="S000004913_FocusedInvestmentRiskMember"
      id="b097c2e5-75ba-4db5-afcf-55a8b2ab0c07">&lt;span style="color:#000000;font-family:Times New Roman;font-size:8pt;"&gt;&#x25cf;&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-style:italic;"&gt;Focused Investment Risk&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; &#x2013; Investments in countries, regions, asset classes, sectors, industries, currencies, or issuers that are subject to the same or similar risk factors and investments whose market prices are closely correlated are subject to higher overall risk than investments that are more diversified or whose market prices are not as closely correlated.&lt;/span&gt;</oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="S000004913_DerivativesandShortSalesRiskMember"
      id="x_93ba5e06-8047-45d1-82a8-a9fa50acbfe3">&lt;span style="color:#000000;font-family:Times New Roman;font-size:8pt;"&gt;&#x25cf;&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-style:italic;"&gt;Derivatives and Short Sales Risk&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; &#x2013; The use of derivatives involves the risk that their value may not change as expected relative to changes in the value of the underlying assets, pools of assets, rates, currencies or indices. Derivatives also present other risks, including market risk, illiquidity risk, currency risk, credit risk, leveraging risk, commodities risk and counterparty risk. The market price of an option is affected by many factors, including changes in the market prices or dividend rates of underlying securities (or in the case of indices, the securities in such indices); the time remaining before expiration; changes in interest rates or exchange rates; and changes in the actual or perceived volatility of the relevant index or underlying securities. The Fund typically creates short investment exposure by selling securities short or by taking a derivative position in which the value of the derivative moves in the opposite direction from the price of an underlying asset, pool of assets, rate, currency or index. Specifically, the net asset value of the Fund&#x2019;s shares will be adversely affected if the securities or other assets that are the subject of the Fund&#x2019;s short exposures appreciate in value. The risk of loss associated with derivatives that provide short investment exposure and short sales of securities is theoretically unlimited.&lt;/span&gt;</oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="S000004913_SmallerCompanyRiskMember"
      id="x_9d30eafa-9df3-49f3-887b-1104853131d9">&lt;span style="color:#000000;font-family:Times New Roman;font-size:8pt;"&gt;&#x25cf;&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-style:italic;"&gt;Smaller Company Risk&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; &#x2013; Smaller companies may have limited product lines, markets, or financial resources, lack the competitive strength of larger companies, have less experienced managers or depend on a few key employees. The securities of companies with smaller market capitalizations often are less widely held and trade less frequently and in lesser quantities, and their market prices often fluctuate more, than the securities of companies with larger market capitalizations.&lt;/span&gt;</oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="S000004913_LeveragingRiskMember"
      id="x_6cadb863-aa6f-4bdd-beea-11232297ad6b">&lt;span style="color:#000000;font-family:Times New Roman;font-size:8pt;"&gt;&#x25cf;&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-style:italic;"&gt;Leveraging Risk&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; &#x2013; The use of derivatives, short sales and securities lending can create leverage. Leverage increases the Fund&#x2019;s losses when the value of its investments (including derivatives) declines. In addition, the Fund&#x2019;s portfolio will be leveraged if it exercises its right to delay payment on a redemption and the value of the Fund&#x2019;s assets declines between the time a redemption request is treated as being received by the Fund and the time the Fund liquidates assets to fund that redemption.&lt;/span&gt;</oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="S000004913_CounterpartyRiskMember"
      id="x_58b28ffb-ad43-4630-aef2-6e15d76339fb">&lt;span style="color:#000000;font-family:Times New Roman;font-size:8pt;"&gt;&#x25cf;&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-style:italic;"&gt;Counterparty Risk&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; &#x2013; The Fund runs the risk that the counterparty to a derivatives contract or a clearing member used by the Fund to hold a cleared derivatives contract is unable or unwilling to make timely settlement payments, return the Fund&#x2019;s collateral or otherwise honor its obligations.&lt;/span&gt;</oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="S000004913_LargeTransactionsRiskMember"
      id="e642246c-2d50-43a1-bea5-5146a704b9dd">&lt;span style="color:#000000;font-family:Times New Roman;font-size:8pt;"&gt;&#x25cf;&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-style:italic;"&gt;Large Transactions Risk&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; &#x2013; To the extent that a large number of shares of the Fund is held by a single shareholder (e.g., an institutional investor or another GMO Fund) or a group of shareholders with a common investment strategy (e.g., GMO asset allocation accounts), the Fund is subject to the risk that a redemption by (or caused by) that shareholder or group will require the Fund to sell investments at disadvantageous prices, disrupt the Fund&#x2019;s operations, lead to temporary overexposure to the Fund&#x2019;s intended investment program or force the Fund&#x2019;s liquidation. The Fund also may be subject to these effects when a number of shareholders collectively redeem or sell a large amount of Fund shares.&lt;/span&gt;</oef:RiskTextBlock>
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      id="x_08ffb397-2cf6-41e0-85cc-cb2b8a0111fc">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-weight:bold;"&gt;Performance&lt;/span&gt;</oef:BarChartAndPerformanceTableHeading>
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      id="x_15bc0544-961c-4b33-85a1-d063290c178a">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;margin-left:3.76%;"&gt;The bar chart and table below provide some indication of the risks of investing in the Fund by showing changes in the Fund&#x2019;s &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;annual total returns from year to year for the periods indicated and by comparing the Fund&#x2019;s average annual total returns for different calendar periods with those of the MSCI World ex USA Value Index and a broad-based securities market index.&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; Share classes not &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;shown would have substantially similar annual returns to those below because all share classes invest in the same portfolio of securities. Annual returns vary among share classes to the extent that they bear different expenses. Share classes that bear higher expenses than the share classes shown below would have lower returns. &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;After-tax returns are calculated using the historical highest individual federal &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;marginal income tax rates and do not reflect the impact of state and local taxes.&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; Actual after-tax returns depend on your tax situation &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;and may differ from those shown. After-tax returns shown are not relevant if you are tax-exempt or if you hold your Fund shares through tax-advantaged arrangements (such as a 401(k) plan or individual retirement account). &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;After-tax returns are shown for Class III &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;shares only; after-tax returns for other classes will vary.&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; Updated performance information for the Fund is available at &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;www.gmo.com&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;. &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;Past performance (before and after taxes) is not an indication of future performance.&lt;/span&gt;</oef:PerformanceNarrativeTextBlock>
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      id="x_975f3d98-2733-438e-82e1-a1775bc3be91">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;margin-left:3.76%;"&gt;The bar chart and table below provide some indication of the risks of investing in the Fund by showing changes in the Fund&#x2019;s &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;annual total returns from year to year for the periods indicated and by comparing the Fund&#x2019;s average annual total returns for different calendar periods with those of the MSCI World ex USA Value Index and a broad-based securities market index.&lt;/span&gt;</oef:PerformanceInformationIllustratesVariabilityOfReturns>
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      id="x_5a8edcf5-57ad-4989-8afe-69c9e23a9dca">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;After-tax returns are calculated using the historical highest individual federal &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;marginal income tax rates and do not reflect the impact of state and local taxes.&lt;/span&gt;</oef:PerformanceTableUsesHighestFederalRate>
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      id="x_5c8ab455-02df-40f7-8ad5-2c4989ba287d">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; Actual after-tax returns depend on your tax situation &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;and may differ from those shown. After-tax returns shown are not relevant if you are tax-exempt or if you hold your Fund shares through tax-advantaged arrangements (such as a 401(k) plan or individual retirement account). &lt;/span&gt;</oef:PerformanceTableNotRelevantToTaxDeferred>
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      id="e14ec18c-fa5f-4d7e-bdec-30a2f767de2f">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;After-tax returns are shown for Class III &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;shares only; after-tax returns for other classes will vary.&lt;/span&gt;</oef:PerformanceTableOneClassOfAfterTaxShown>
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      id="x_962e399a-8372-4940-9c22-872b9404d6f8">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;www.gmo.com&lt;/span&gt;</oef:PerformanceAvailabilityWebSiteAddress>
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      id="x_2c965e3a-ae68-409c-82bc-35259f08ec4e">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;Past performance (before and after taxes) is not an indication of future performance.&lt;/span&gt;</oef:PerformancePastDoesNotIndicateFuture>
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      id="x_1bd3c644-aa98-4b4e-84a5-ce0702f3a8f8">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-weight:bold;"&gt;Annual Total Returns/Class III Shares&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:6.5pt;font-weight:bold;position:relative;top:-2.75pt;"&gt;1,2&lt;/span&gt; &lt;br/&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;Years Ending December 31&lt;/span&gt;</oef:BarChartHeading>
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      id="x_0fc3aa4a-6f94-4161-88b2-8c13a4f66aa6">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;Highest Quarter:&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;19.15%&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;-sec-ix-hidden:x_8981a33b-a8e2-4376-9db6-f7d46ed54611"&gt;4Q 2022&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;Lowest Quarter:&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;-23.02%&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;-sec-ix-hidden:x_00acc464-8632-4dc8-889d-bf70c93861dd"&gt;1Q 2020&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;Year-to-Date:&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;12.27%&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;As of&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;3/31/2025&lt;/span&gt;</oef:BarChartClosingTextBlock>
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      id="x_01b8b197-81bc-4c6a-9c01-05d4abdd9103">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;Highest Quarter:&lt;/span&gt;</oef:HighestQuarterlyReturnLabel>
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      id="x_78c013eb-3d9f-44d8-8867-1dbfa2f7394b">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;Lowest Quarter:&lt;/span&gt;</oef:LowestQuarterlyReturnLabel>
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      id="x_4b66fc78-561f-40cb-92ef-9d8bd9f532e2">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;Year-to-Date:&lt;/span&gt;</oef:YearToDateReturnLabel>
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      id="a045e673-a2f8-467d-8a79-2681ecc8547d"
      unitRef="pure">0.1227</oef:BarChartYearToDateReturn>
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      contextRef="S000004913_C000013282"
      id="x_4f9989ae-1266-46f5-9035-3c91cb8d011f">2025-03-31</oef:BarChartYearToDateReturnDate>
    <oef:PerformanceTableHeading
      contextRef="S000004913"
      id="x_44c85401-9455-4b12-b583-dd439a836a4d">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-weight:bold;"&gt;Average Annual Total Returns&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:6.5pt;font-weight:bold;position:relative;top:-2.75pt;"&gt;1,2&lt;/span&gt; &lt;br/&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;Periods Ending December 31, 2024&lt;/span&gt;</oef:PerformanceTableHeading>
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      id="x_8f081e2e-8fa7-46b3-af63-35331a92a1ff">1998-07-29</oef:PerfInceptionDate>
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      id="fd908d4f-0c7f-4704-8496-8686f8b2adc0"
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    <oef:ObjectiveHeading
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      id="x_33b2842b-4205-4636-97be-14ba7d9c0c1a">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-weight:bold;"&gt;Investment objective&lt;/span&gt;</oef:ObjectiveHeading>
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      id="x_940854f4-d660-4bbd-a9fa-bc4c18862f1f">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;Total return.&lt;/span&gt;</oef:ObjectivePrimaryTextBlock>
    <oef:ExpenseHeading
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      id="d76507dd-16ad-4341-866b-f7e7973a5d58">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-weight:bold;"&gt;Fees and expenses&lt;/span&gt;</oef:ExpenseHeading>
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      id="b832edea-bdaa-432d-8d0f-ee24a2338b63">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;margin-left:3.76%;"&gt;The table below describes the fees and expenses that you may bear for each class of shares if you buy, hold, and sell shares of the &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;Fund. You may pay other fees, such as brokerage commissions and other fees to financial intermediaries, which are not reflected in the table and example below.&lt;/span&gt;</oef:ExpenseNarrativeTextBlock>
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      id="x_6aff1bd2-58da-4d69-9223-46d47047b7c0">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-weight:bold;"&gt;Annual Fund operating expenses &lt;/span&gt; &lt;br/&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;(expenses that you bear each year as a percentage of the value of your investment)&lt;/span&gt;</oef:OperatingExpensesCaption>
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    <oef:ExpensesOverAssets
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    <oef:ExpensesOverAssets
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    <oef:ExpensesOverAssets
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      id="x_0ecadacd-83c3-44c9-a08b-e221d8439d86"
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      decimals="4"
      id="x_0652ca59-e654-44ec-a960-be38a4488110"
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    <oef:NetExpensesOverAssets
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      id="x_7acda840-0d4d-4e9d-b274-0a2bfacba31e"
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    <oef:NetExpensesOverAssets
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      id="x_82389c99-c452-4fb6-ad35-ae7caaea8889"
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    <oef:NetExpensesOverAssets
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    <oef:FeeWaiverOrReimbursementOverAssetsDateOfTermination
      contextRef="S000069850"
      id="x_213d1ea2-57d8-4614-95f7-b1592169ae90">&lt;span style="color:#000000;font-family:Times New Roman;font-size:8pt;font-style:italic;"&gt;June 30, 2026&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:8pt;font-style:italic;"&gt;June 30, 2026&lt;/span&gt;</oef:FeeWaiverOrReimbursementOverAssetsDateOfTermination>
    <oef:ExpenseExampleHeading
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      id="x_4d1a5a57-d4e2-414e-a54b-64033f00de6c">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-weight:bold;"&gt;Example&lt;/span&gt;</oef:ExpenseExampleHeading>
    <oef:ExpenseExampleNarrativeTextBlock
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      id="x_39a81651-9f2e-4f39-8058-569551703ce3">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;margin-left:3.76%;"&gt;This example is intended to help you compare the cost of investing in the Fund with the cost of investing in other funds. The &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;example assumes that you invest $10,000 in the Fund for the time periods indicated, regardless of whether or not you redeem your shares at the end of such periods. The example also assumes that your investment has a 5% return each year and that the Fund&#x2019;s operating expenses remain the same as those shown in the table. The one year amounts shown reflect the expense reimbursement and waiver noted in the expense table. Although your actual costs may be higher or lower, based on these assumptions your costs would be:&lt;/span&gt;</oef:ExpenseExampleNarrativeTextBlock>
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      decimals="INF"
      id="x_7a36fe78-b902-4e8e-be88-eb0fae46064e"
      unitRef="USD">69</oef:ExpenseExampleYear01>
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      contextRef="S000069850_C000222625"
      decimals="INF"
      id="x_0c55f939-4714-442f-b77d-12c46fe7535a"
      unitRef="USD">239</oef:ExpenseExampleYear03>
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      contextRef="S000069850_C000222625"
      decimals="INF"
      id="afa72ce5-0638-4ec4-9fb2-d1e09884dd27"
      unitRef="USD">423</oef:ExpenseExampleYear05>
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      contextRef="S000069850_C000222625"
      decimals="INF"
      id="x_159ec1a7-d29e-4877-b765-1da54186e81c"
      unitRef="USD">957</oef:ExpenseExampleYear10>
    <oef:ExpenseExampleYear01
      contextRef="S000069850_C000222626"
      decimals="INF"
      id="x_361491ea-29a0-43e4-b292-9922fa96e00a"
      unitRef="USD">64</oef:ExpenseExampleYear01>
    <oef:ExpenseExampleYear03
      contextRef="S000069850_C000222626"
      decimals="INF"
      id="a69ac6c3-be32-4dba-af4b-e2e971498d38"
      unitRef="USD">223</oef:ExpenseExampleYear03>
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      contextRef="S000069850_C000222626"
      decimals="INF"
      id="x_6be32fb3-f2ec-4528-aa66-5ac81a5f9c43"
      unitRef="USD">396</oef:ExpenseExampleYear05>
    <oef:ExpenseExampleYear10
      contextRef="S000069850_C000222626"
      decimals="INF"
      id="e3997d70-0c7e-4672-b191-74cd6209f58b"
      unitRef="USD">897</oef:ExpenseExampleYear10>
    <oef:ExpenseExampleYear01
      contextRef="S000069850_C000222624"
      decimals="INF"
      id="c4a2225a-b80e-4a61-af52-d394bfd234dc"
      unitRef="USD">63</oef:ExpenseExampleYear01>
    <oef:ExpenseExampleYear03
      contextRef="S000069850_C000222624"
      decimals="INF"
      id="x_8aed9f5e-b1db-422c-90af-869e538f76c5"
      unitRef="USD">220</oef:ExpenseExampleYear03>
    <oef:ExpenseExampleYear05
      contextRef="S000069850_C000222624"
      decimals="INF"
      id="x_4b925f18-9ed6-4efb-b0a5-babd783c19dc"
      unitRef="USD">391</oef:ExpenseExampleYear05>
    <oef:ExpenseExampleYear10
      contextRef="S000069850_C000222624"
      decimals="INF"
      id="f6638407-fd6a-404b-8c52-3ad93d664e98"
      unitRef="USD">885</oef:ExpenseExampleYear10>
    <oef:ExpenseExampleYear01
      contextRef="S000069850_C000222627"
      decimals="INF"
      id="x_0304ced9-5c98-445f-9d5a-88b5b337c316"
      unitRef="USD">60</oef:ExpenseExampleYear01>
    <oef:ExpenseExampleYear03
      contextRef="S000069850_C000222627"
      decimals="INF"
      id="f8724b6d-3701-4e98-b635-e5c1f1112a42"
      unitRef="USD">211</oef:ExpenseExampleYear03>
    <oef:ExpenseExampleYear05
      contextRef="S000069850_C000222627"
      decimals="INF"
      id="x_732aa6a0-1787-4d4c-a870-7cb92396a4f4"
      unitRef="USD">374</oef:ExpenseExampleYear05>
    <oef:ExpenseExampleYear10
      contextRef="S000069850_C000222627"
      decimals="INF"
      id="fd7eeacd-22af-4736-affe-778872ec4570"
      unitRef="USD">849</oef:ExpenseExampleYear10>
    <oef:ExpenseExampleYear01
      contextRef="S000069850_C000222631"
      decimals="INF"
      id="x_9d4dba4e-3e6d-4280-a8a6-0f9c60c131eb"
      unitRef="USD">69</oef:ExpenseExampleYear01>
    <oef:ExpenseExampleYear03
      contextRef="S000069850_C000222631"
      decimals="INF"
      id="x_13236ac1-a835-4b5c-ad99-6a3a0b63e620"
      unitRef="USD">239</oef:ExpenseExampleYear03>
    <oef:ExpenseExampleYear05
      contextRef="S000069850_C000222631"
      decimals="INF"
      id="x_886b44f4-d843-4291-8746-79f62e4b9319"
      unitRef="USD">423</oef:ExpenseExampleYear05>
    <oef:ExpenseExampleYear10
      contextRef="S000069850_C000222631"
      decimals="INF"
      id="c95b6341-3e0d-46df-8377-d7342ddbb45b"
      unitRef="USD">957</oef:ExpenseExampleYear10>
    <oef:ExpenseExampleYear01
      contextRef="S000069850_C000222630"
      decimals="INF"
      id="f03042c3-43bb-4846-a1ac-73052a0f0369"
      unitRef="USD">82</oef:ExpenseExampleYear01>
    <oef:ExpenseExampleYear03
      contextRef="S000069850_C000222630"
      decimals="INF"
      id="x_6c1f4734-ac85-46a2-9f19-8f3206145d80"
      unitRef="USD">275</oef:ExpenseExampleYear03>
    <oef:ExpenseExampleYear05
      contextRef="S000069850_C000222630"
      decimals="INF"
      id="x_4aab8acb-fc7f-45d7-ae64-0c07c506bc3b"
      unitRef="USD">484</oef:ExpenseExampleYear05>
    <oef:ExpenseExampleYear10
      contextRef="S000069850_C000222630"
      decimals="INF"
      id="x_6a323104-c6da-41fc-9fe3-47627d945977"
      unitRef="USD">1088</oef:ExpenseExampleYear10>
    <oef:PortfolioTurnoverHeading
      contextRef="S000069850"
      id="x_0bcb2c17-1b2d-46d2-94c4-50ef70f0e3be">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-weight:bold;"&gt;Portfolio turnover&lt;/span&gt;</oef:PortfolioTurnoverHeading>
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      contextRef="S000069850"
      id="ca4177b5-ba2f-4ebc-ab40-621be8c86a8e">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;margin-left:3.76%;"&gt;The Fund pays transaction costs, such as commissions, when it buys and sells securities. A higher portfolio turnover rate may &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;result in higher transaction costs and, for holders of Fund shares subject to U.S. taxes, higher income taxes. These transaction costs, which are not reflected in Annual Fund operating expenses or in the Example, affect the Fund&#x2019;s performance.&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; During its fiscal year &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;ended February 28, 2025, the Fund&#x2019;s portfolio turnover rate (excluding short-term investments) was &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;32&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;% of the average value of its portfolio securities.&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; That portfolio turnover rate includes investments in U.S. Treasury Fund, which the Fund uses as a short-term &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;investment vehicle for cash management. The Fund&#x2019;s portfolio turnover rate during its fiscal year ended February 28, 2025, excluding transactions in U.S. Treasury Fund and other short-term investments, was 23% of the average value of its portfolio securities.&lt;/span&gt;</oef:PortfolioTurnoverTextBlock>
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      id="x_7caab97b-1b2e-48d8-89cd-e7170b082b65"
      unitRef="pure">0.32</oef:PortfolioTurnoverRate>
    <oef:StrategyHeading
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      id="x_7c59c582-7810-494a-9e53-8f41e6baabf0">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-weight:bold;"&gt;Principal investment strategies&lt;/span&gt;</oef:StrategyHeading>
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      id="x_96ec565f-6ddb-4979-97a5-aaba0e2f4372">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;margin-left:3.76%;"&gt;GMO seeks to achieve the Fund&#x2019;s investment objective by investing the Fund&#x2019;s assets primarily in equity securities of Japanese &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;companies and companies tied economically to Japan that GMO believes are attractively valued and conservatively capitalized.&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;margin-left:3.76%;"&gt;In selecting securities for the Fund, GMO uses a bottom-up approach that takes into account both systematic factors, such as &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;profitability, profit stability and leverage, and judgmental factors, such as GMO&#x2019;s assessment of a company&#x2019;s management (through &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;margin-left:0%;"&gt;management engagement and other forms of research), business strategies and key risks. GMO monitors macroeconomic, social, political, and regulatory developments, including the potential impact of those developments on a company&#x2019;s future prospects. In addition, GMO may consider ESG (environmental, social, and governance) criteria when evaluating Fund investments. GMO routinely &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;engages with management to seek to increase value.&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;margin-left:3.76%;"&gt;The Fund may invest in securities of companies of any market capitalization. The factors GMO considers and investment methods &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;GMO uses can change over time. GMO does not manage the Fund to, or control the Fund&#x2019;s risk relative to, any securities index or benchmark. In addition to having substantial exposure to Japanese securities and the Japanese yen, at times the Fund may have substantial exposure to a single issuer, asset class, sector, industry or region, or companies with similar market capitalizations. &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;margin-left:3.76%;"&gt;As an alternative to investing directly in common stock, the Fund may invest in exchange-traded funds (ETFs). The Fund also may &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;invest in American Depositary Receipts, European Depositary Receipts and Global Depositary Receipts.&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;margin-left:3.76%;"&gt;Under normal circumstances, the Fund invests directly and indirectly (e.g., through underlying funds or derivatives) at least 80% of &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;its assets in securities of companies tied economically to Japan (see &#x201c;Name Policies&#x201d;). &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;margin-left:3.76%;"&gt;The Fund also may invest in GMO U.S. Treasury Fund, in money market funds unaffiliated with GMO, and directly in the types of &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;investments typically held by money market funds.&lt;/span&gt;</oef:StrategyNarrativeTextBlock>
    <oef:RiskTextBlock
      contextRef="S000069850_RiskLoseMoneyMember"
      id="x_947f9144-77fe-47cb-8b6b-704ed8b1fac3">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;Many factors can affect this value, and you may lose money by investing in the Fund.&lt;/span&gt;</oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="S000069850_RiskNotInsuredDepositoryInstitutionMember"
      id="b45dcd69-e9f0-4b4c-bea0-3624427b247e">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;An investment in the Fund is not a bank deposit and is not insured or guaranteed by the FDIC or &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;any government agency.&lt;/span&gt;</oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="S000069850_MarketRiskEquitiesRiskMember"
      id="x_2d10054e-b849-4a0f-8be5-269220d97173">&lt;span style="color:#000000;font-family:Times New Roman;font-size:8pt;"&gt;&#x25cf;&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-style:italic;"&gt;Market Risk &#x2013; Equities &#x2013; &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;The market price of an equity in the Fund&#x2019;s portfolio may decline due to factors affecting the issuer or its industry or the economy and equity markets generally. If the Fund purchases an equity for less than its fundamental fair (or intrinsic) value as assessed by GMO, the Fund runs the risk that the market price of the equity will not appreciate or will decline (for example, if GMO&#x2019;s assessment proves to be incorrect or the market fails to recognize the equity&#x2019;s intrinsic value). The Fund also may purchase equities that typically trade at higher multiples of current earnings than other securities, and the market prices of these equities often are more sensitive to changes in future earnings expectations and interest rates than the market prices of equities trading at lower multiples. Declines in stock market prices generally are likely to reduce the net asset value of the Fund&#x2019;s shares.&lt;/span&gt;</oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="S000069850_FocusedInvestmentRiskMember"
      id="x_6b18fb9b-9c68-400b-8c45-a4cdac2db8fe">&lt;span style="color:#000000;font-family:Times New Roman;font-size:8pt;"&gt;&#x25cf;&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-style:italic;"&gt;Focused Investment Risk&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; &#x2013; Because the Fund focuses its investments in securities of Japanese companies and companies tied economically to Japan, the Fund is more susceptible to changes in Japanese economic and political conditions, the reliability of financial information available concerning those companies, and the legal, tax and regulatory environment in Japan. Japan&#x2019;s economy has experienced significant deflation and instability in its financial institutions historically, and there can be no assurance that such difficulties will not resurface, particularly in the event of a change in political leadership or other circumstances affecting the social, political or economic landscape of Japan. Changes in international trade and government tax and fiscal policies may have negative effects on the Japanese economy. Japan&#x2019;s economy is geared toward global trade, and there can be no assurance that overseas demand for the products and services of Japanese companies will not change adversely in the future. Changes in any of the factors noted above could have a material negative impact on the Fund&#x2019;s investments.&lt;/span&gt;</oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="S000069850_NonUSInvestmentRiskMember"
      id="x_0432004d-62aa-4896-b95a-447a45479be3">&lt;span style="color:#000000;font-family:Times New Roman;font-size:8pt;"&gt;&#x25cf;&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-style:italic;"&gt;Non-U.S. Investment Risk&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; &#x2013; The market prices of many non-U.S. securities fluctuate more than those of U.S. securities. Many non-U.S. securities markets are less stable, smaller, less liquid, and less regulated than U.S. securities markets, and the cost of trading in those markets often is higher than in U.S. securities markets. In addition, non-U.S. securities issuers often are not subject to as much regulation as U.S. issuers, and the reporting, recordkeeping, accounting, custody, and auditing standards to which those issuers are subject often are not as rigorous as U.S. standards. In addition, the Fund is subject to taxation by countries other than the United States, including potentially on a retroactive basis, on (i) capital gains it realizes or dividends, interest, or other amounts it realizes or accrues in respect of non-U.S. investments; (ii) transactions in those investments; and (iii) repatriation of proceeds generated from the sale or other disposition of those investments.&lt;/span&gt;</oef:RiskTextBlock>
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      contextRef="S000069850_CurrencyRiskMember"
      id="x_39e38c34-33ad-4a2a-8362-1c1acf840fe1">&lt;span style="color:#000000;font-family:Times New Roman;font-size:8pt;"&gt;&#x25cf;&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-style:italic;"&gt;Currency Risk&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; &#x2013; Fluctuations in the exchange rate between the U.S. dollar and the Japanese Yen can adversely affect the market value of the Fund&#x2019;s holdings (e.g., the value of the U.S. dollar increases in relation to the Japanese Yen).&lt;/span&gt;</oef:RiskTextBlock>
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      contextRef="S000069850_MarketDisruptionandGeopoliticalRiskMember"
      id="x_9138f4c4-5d8a-43a0-89dc-9fc77fdb2e68">&lt;span style="color:#000000;font-family:Times New Roman;font-size:8pt;"&gt;&#x25cf;&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-style:italic;"&gt;Market Disruption and Geopolitical Risk&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; &#x2013; Geopolitical and other events (e.g., wars, pandemics, sanctions, terrorism, diplomatic tensions, dramatic changes in regulatory and/or foreign policy, cyberattacks, and rapid technological developments such as artificial intelligence) often disrupt securities markets and adversely affect the general economy or particular economies and markets, including Japan. Shifts within Japan&#x2019;s domestic political landscape, as well as political shifts affecting countries neighboring Japan (&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-style:italic;"&gt;e.g., &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;China, Taiwan, Russia, North Korea and South Korea), pose a particular risk of adverse effects on the Japanese economy and market. Those events, as well as other changes in non-U.S. and U.S. economic and political conditions, could exacerbate other risks or otherwise reduce the value of the Fund&#x2019;s investments.&lt;/span&gt;</oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="S000069850_LargeTransactionsRiskMember"
      id="b0860598-9ede-4c81-b547-81a87681f91d">&lt;span style="color:#000000;font-family:Times New Roman;font-size:8pt;"&gt;&#x25cf;&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-style:italic;"&gt;Large Transactions Risk&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; &#x2013; To the extent that a large number of shares of the Fund is held by a single shareholder (e.g., an institutional investor or another GMO Fund) or a group of shareholders with a common investment strategy (e.g., GMO asset allocation accounts), the Fund is subject to the risk that a redemption by (or caused by) that shareholder or group will require the &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;margin-left:0.00%;"&gt;Fund to sell investments at disadvantageous prices, disrupt the Fund&#x2019;s operations, lead to temporary overexposure to the Fund&#x2019;s intended investment program or force the Fund&#x2019;s liquidation. The Fund also may be subject to these effects when a number of &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;shareholders collectively redeem or sell a large amount of Fund shares.&lt;/span&gt;</oef:RiskTextBlock>
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      contextRef="S000069850_SmallerCompanyRiskMember"
      id="x_3d473eb9-8f68-40c5-96cc-967ed8379054">&lt;span style="color:#000000;font-family:Times New Roman;font-size:8pt;"&gt;&#x25cf;&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-style:italic;"&gt;Smaller Company Risk&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; &#x2013; Smaller companies may have limited product lines, markets, or financial resources, lack the competitive strength of larger companies, have less experienced managers or depend on a few key employees. The securities of companies with smaller market capitalizations often are less widely held and trade less frequently and in lesser quantities, and their market prices often fluctuate more, than the securities of companies with larger market capitalizations.&lt;/span&gt;</oef:RiskTextBlock>
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      contextRef="S000069850_IlliquidityRiskMember"
      id="c55d14da-63b7-46f9-989d-c72ff36232d6">&lt;span style="color:#000000;font-family:Times New Roman;font-size:8pt;"&gt;&#x25cf;&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-style:italic;"&gt;Illiquidity Risk&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; &#x2013; Low trading volume, lack of a market maker, large position size, or legal restrictions increase the risk that the Fund or an underlying fund is limited or prevented from selling particular securities or closing derivative positions at desirable prices at a particular time or at all.&lt;/span&gt;</oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="S000069850_ManagementandOperationalRiskMember"
      id="a0688f55-9f5e-4a51-9878-9c8749a85b45">&lt;span style="color:#000000;font-family:Times New Roman;font-size:8pt;"&gt;&#x25cf;&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-style:italic;"&gt;Management and Operational Risk&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; &#x2013; The Fund runs the risk that GMO&#x2019;s investment techniques will fail to produce intended results.&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;The Fund also runs the risk that GMO&#x2019;s assessment of an investment, including a security&#x2019;s fundamental fair (or intrinsic) value, is wrong or that deficiencies in GMO&#x2019;s or another service provider&#x2019;s internal systems or controls will cause losses for the Fund or impair Fund operations.&lt;/span&gt;</oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="S000069850_ValueInvestingRiskMember"
      id="x_19cf60f0-acb3-4c08-969e-4ba6a5152e05">&lt;span style="color:#000000;font-family:Times New Roman;font-size:8pt;"&gt;&#x25cf;&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-style:italic;"&gt;Value Investing Risk&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; &#x2013; Issuers whose securities GMO believes are undervalued may not realize their business potential, may never be recognized by the market as being undervalued and/or may be appropriately priced notwithstanding GMO&#x2019;s assessment. These and other factors may cause the price of value stocks to decline, resulting in losses to the Fund.&lt;/span&gt;</oef:RiskTextBlock>
    <oef:BarChartAndPerformanceTableHeading
      contextRef="S000069850"
      id="x_54b72099-0c61-448e-8736-79dd806c8739">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-weight:bold;"&gt;Performance&lt;/span&gt;</oef:BarChartAndPerformanceTableHeading>
    <oef:PerformanceNarrativeTextBlock
      contextRef="S000069850"
      id="x_93f21a20-6ccf-4ede-8f8b-73ad600a87c0">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;margin-left:3.76%;"&gt;The bar chart and table below provide some indication of the risks of investing in the Fund by showing changes in the Fund&#x2019;s &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;annual total returns from year to year for the periods indicated and by comparing the Fund&#x2019;s average annual total returns for different calendar periods with those of a broad-based securities market index.&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; Share classes not shown would have substantially similar annual &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;returns to those below because all share classes invest in the same portfolio of securities. Annual returns vary among share classes to the extent that they bear different expenses. Share classes that bear higher expenses than the share classes shown below would have lower returns. &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;After-tax returns are calculated using the historical highest individual federal marginal income tax rates and do not reflect the &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;impact of state and local taxes.&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; Actual after-tax returns depend on your tax situation and may differ from those shown. After-tax returns &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;shown are not relevant if you are tax-exempt or if you hold your Fund shares through tax-advantaged arrangements (such as a 401(k) plan or individual retirement account). &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;After-tax returns are shown for Class VI shares only; after-tax returns for other classes &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;will vary.&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; Updated performance information for the Fund is available at &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;www.gmo.com&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;. &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;Past performance (before and after taxes) is not an indication of future performance.&lt;/span&gt;</oef:PerformanceNarrativeTextBlock>
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      contextRef="S000069850"
      id="cd0deaed-c0f4-421a-8a32-71dbb0aab668">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;margin-left:3.76%;"&gt;The bar chart and table below provide some indication of the risks of investing in the Fund by showing changes in the Fund&#x2019;s &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;annual total returns from year to year for the periods indicated and by comparing the Fund&#x2019;s average annual total returns for different calendar periods with those of a broad-based securities market index.&lt;/span&gt;</oef:PerformanceInformationIllustratesVariabilityOfReturns>
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      contextRef="S000069850"
      id="a863e882-a973-49b3-83f3-958f2ddd8b06">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;After-tax returns are calculated using the historical highest individual federal marginal income tax rates and do not reflect the &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;impact of state and local taxes.&lt;/span&gt;</oef:PerformanceTableUsesHighestFederalRate>
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      id="f4180496-d56f-4bd0-8aee-6bfb5a8408fb">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; Actual after-tax returns depend on your tax situation and may differ from those shown. After-tax returns &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;shown are not relevant if you are tax-exempt or if you hold your Fund shares through tax-advantaged arrangements (such as a 401(k) plan or individual retirement account). &lt;/span&gt;</oef:PerformanceTableNotRelevantToTaxDeferred>
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      contextRef="S000069850"
      id="x_919affdf-075b-4870-a2b5-f76ea4f87e42">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;After-tax returns are shown for Class VI shares only; after-tax returns for other classes &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;will vary.&lt;/span&gt;</oef:PerformanceTableOneClassOfAfterTaxShown>
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      id="x_646ab5c3-e952-474e-b116-497e4564d039">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;www.gmo.com&lt;/span&gt;</oef:PerformanceAvailabilityWebSiteAddress>
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      id="x_9f257c5e-a2c8-4571-8081-36021ca2d7de">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;Past performance (before and after taxes) is not an indication of future performance.&lt;/span&gt;</oef:PerformancePastDoesNotIndicateFuture>
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      id="a6bf78eb-a47d-47a9-8533-cdda0720c0d3">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-weight:bold;"&gt;Annual Total Returns/Class VI Shares&lt;/span&gt; &lt;br/&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;Years Ending December 31&lt;/span&gt;</oef:BarChartHeading>
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      id="bd134302-31a8-4468-b2b4-ad7466134d93">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;Highest Quarter:&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;17.02%&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;-sec-ix-hidden:x_00d18882-8fd3-4c52-a59c-37d812d8c178"&gt;4Q 2020&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;Lowest Quarter:&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;-9.15%&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;-sec-ix-hidden:e55dc323-d265-4843-935a-81fbe34df2a1"&gt;2Q 2022&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;Year-to-Date:&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;6.06%&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;As of&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;3/31/2025&lt;/span&gt;</oef:BarChartClosingTextBlock>
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      id="x_3f1feda5-9e01-42d3-88e8-415a4d46b175">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;Highest Quarter:&lt;/span&gt;</oef:HighestQuarterlyReturnLabel>
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      id="ce32eb5b-78f4-4088-908a-ee69ef446725"
      unitRef="pure">0.1702</oef:BarChartHighestQuarterlyReturn>
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      id="e1f98e21-e83a-4d8b-9be6-2afd51e2c43a">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;Lowest Quarter:&lt;/span&gt;</oef:LowestQuarterlyReturnLabel>
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      contextRef="S000069850_C000222627"
      decimals="4"
      id="x_94b7318b-77ce-43da-8aa2-b58771d51d36"
      unitRef="pure">-0.0915</oef:BarChartLowestQuarterlyReturn>
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      id="f4159a48-9df0-4060-94a3-e5c8c6c8ac70">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;Year-to-Date:&lt;/span&gt;</oef:YearToDateReturnLabel>
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      decimals="4"
      id="x_6b448f5d-9d6f-4684-a787-1ffd294950cc"
      unitRef="pure">0.0606</oef:BarChartYearToDateReturn>
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      contextRef="S000069850_C000222627"
      id="x_6d83ea5e-5648-4689-bda1-4ba4ea1956ee">2025-03-31</oef:BarChartYearToDateReturnDate>
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      id="x_46f4ed91-aecb-4acc-b5f1-9e20a174d074">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-weight:bold;"&gt;Average Annual Total Returns&lt;/span&gt; &lt;br/&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;Periods Ending December 31, 2024&lt;/span&gt;</oef:PerformanceTableHeading>
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      contextRef="C000222625"
      id="x_5c3f3f0e-149a-4a34-bd7b-0f8f33b2bd99">2021-12-30</oef:PerfInceptionDate>
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      id="x_5369ca69-276f-43ac-90c3-3e9fa513413a"
      unitRef="pure">0.0818</oef:AvgAnnlRtrPct>
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      contextRef="C000222625_30Dec2021_31Dec2024"
      decimals="4"
      id="bd8102c9-76b9-4367-9767-18230e2b26e7"
      unitRef="pure">0.0471</oef:AvgAnnlRtrPct>
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      unitRef="pure">0.0764</oef:AvgAnnlRtrPct>
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      unitRef="pure">0.0295</oef:AvgAnnlRtrPct>
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      contextRef="C000222627"
      id="c04825c1-5e06-40e1-8994-0299375a04d1">2020-09-14</oef:PerfInceptionDate>
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      contextRef="C000222627_01Jan2024_31Dec2024"
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      id="x_4dcf3eac-49de-4120-aa56-acdaa5eb6a8b"
      unitRef="pure">0.0829</oef:AvgAnnlRtrPct>
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      id="x_6de65266-4fe2-4d49-998e-e95e71735c28"
      unitRef="pure">0.0732</oef:AvgAnnlRtrPct>
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      decimals="4"
      id="f9078389-a2ce-410a-a67b-20be9bd43a2d"
      unitRef="pure">0.0772</oef:AvgAnnlRtrPct>
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      decimals="4"
      id="ee41cfb6-5736-4a64-b8a8-508217271b3c"
      unitRef="pure">0.0512</oef:AvgAnnlRtrPct>
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      contextRef="C000222627_AfterTaxesOnDistributionsAndSalesMember_01Jan2024_31Dec2024"
      decimals="4"
      id="d4c9f6f8-f7fd-4b9a-95dc-2da273169450"
      unitRef="pure">0.0545</oef:AvgAnnlRtrPct>
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      contextRef="C000222627_AfterTaxesOnDistributionsAndSalesMember_14Sep2020_31Dec2024"
      decimals="4"
      id="x_6d6bb6be-9af4-46f2-8d03-35cc3d9c652e"
      unitRef="pure">0.0508</oef:AvgAnnlRtrPct>
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      decimals="4"
      id="ee0f80a6-2569-4b59-99de-a40401d8f2ce"
      unitRef="pure">0.0764</oef:AvgAnnlRtrPct>
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      contextRef="C000222627_TokyoStockPriceIndexMember_14Sep2020_31Dec2024"
      decimals="4"
      id="a9efca08-02e6-4542-92cd-283594f4bc9a"
      unitRef="pure">0.0514</oef:AvgAnnlRtrPct>
    <oef:PerfInceptionDate
      contextRef="C000222630"
      id="f61a0b5d-d896-41b0-ad49-413b65dcdd17">2021-06-07</oef:PerfInceptionDate>
    <oef:AvgAnnlRtrPct
      contextRef="C000222630_01Jan2024_31Dec2024"
      decimals="4"
      id="x_9ad8f39c-f7e3-4655-8c06-67ffd8cc1832"
      unitRef="pure">0.0807</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000222630_07Jun2021_31Dec2024"
      decimals="4"
      id="d4f05f0d-48d5-446c-b391-d93e352ce584"
      unitRef="pure">0.0178</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000222630_TokyoStockPriceIndexMember_01Jan2024_31Dec2024"
      decimals="4"
      id="x_07428e31-0903-4786-ac6f-d20f81fd51da"
      unitRef="pure">0.0764</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000222630_TokyoStockPriceIndexMember_07Jun2021_31Dec2024"
      decimals="4"
      id="x_2173f7be-49dc-4fff-bb46-1ff9fa1e973f"
      unitRef="pure">0.0171</oef:AvgAnnlRtrPct>
    <oef:ObjectiveHeading
      contextRef="S000004084"
      id="x_9bc60e19-25fc-4f56-9f78-f072934401dd">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-weight:bold;"&gt;Investment objective&lt;/span&gt;</oef:ObjectiveHeading>
    <oef:ObjectivePrimaryTextBlock
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      id="x_8ec0bf7c-1208-4ac2-a759-1837c0f2fd4f">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;Total return.&lt;/span&gt;</oef:ObjectivePrimaryTextBlock>
    <oef:ExpenseHeading
      contextRef="S000004084"
      id="x_9e141b37-ac1f-4154-ac5c-b4e596b78385">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-weight:bold;"&gt;Fees and expenses&lt;/span&gt;</oef:ExpenseHeading>
    <oef:ExpenseNarrativeTextBlock
      contextRef="S000004084"
      id="x_6f8eadb9-8406-4677-a24e-53aac5772e54">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;margin-left:3.76%;"&gt;The table below describes the fees and expenses that you may bear for each class of shares if you buy, hold, and sell shares of the &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;Fund. You may pay other fees, such as brokerage commissions and other fees to financial intermediaries, which are not reflected in the table and example below.&lt;/span&gt;</oef:ExpenseNarrativeTextBlock>
    <oef:OperatingExpensesCaption
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      id="x_911f59f9-304e-407b-9070-45c637f65144">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-weight:bold;"&gt;Annual Fund operating expenses &lt;/span&gt; &lt;br/&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;(expenses that you bear each year as a percentage of the value of your investment)&lt;/span&gt;</oef:OperatingExpensesCaption>
    <oef:ManagementFeesOverAssets
      contextRef="S000004084_C000011437"
      decimals="4"
      id="x_6dd0b89d-f259-44a5-9b72-db358f2ab95d"
      unitRef="pure">0.0048</oef:ManagementFeesOverAssets>
    <oef:ManagementFeesOverAssets
      contextRef="S000004084_C000011438"
      decimals="5"
      id="f7ca9c8f-15a8-4bf8-8701-6dbdd4fc035a"
      unitRef="pure">0.00435</oef:ManagementFeesOverAssets>
    <oef:ManagementFeesOverAssets
      contextRef="S000004084_C000011439"
      decimals="5"
      id="x_87fcce98-19b5-4e86-a051-48f77e4ab91d"
      unitRef="pure">0.00415</oef:ManagementFeesOverAssets>
    <oef:ManagementFeesOverAssets
      contextRef="S000004084_C000011440"
      decimals="5"
      id="e757bacc-9d3a-4abf-9fa0-002d153501b8"
      unitRef="pure">0.00385</oef:ManagementFeesOverAssets>
    <oef:ManagementFeesOverAssets
      contextRef="S000004084_C000213357"
      decimals="4"
      id="bc3a5415-9532-41d2-a146-755ad813e9aa"
      unitRef="pure">0.0048</oef:ManagementFeesOverAssets>
    <oef:ManagementFeesOverAssets
      contextRef="S000004084_C000213356"
      decimals="4"
      id="a0c5d881-f14b-417b-834e-34c006015b88"
      unitRef="pure">0.0048</oef:ManagementFeesOverAssets>
    <oef:OtherExpensesOverAssets
      contextRef="S000004084_C000011437"
      decimals="4"
      id="x_3ce3f03a-104d-4168-9b76-d43de4ab5c47"
      unitRef="pure">0.0003</oef:OtherExpensesOverAssets>
    <oef:OtherExpensesOverAssets
      contextRef="S000004084_C000011438"
      decimals="4"
      id="x_63af1bac-777d-4297-b69b-9f82494e6516"
      unitRef="pure">0.0003</oef:OtherExpensesOverAssets>
    <oef:OtherExpensesOverAssets
      contextRef="S000004084_C000011439"
      decimals="4"
      id="x_08feb15b-385f-42ea-91ed-c60917a3f584"
      unitRef="pure">0.0003</oef:OtherExpensesOverAssets>
    <oef:OtherExpensesOverAssets
      contextRef="S000004084_C000011440"
      decimals="4"
      id="x_5a4cab34-04b9-4eb3-9a51-dd2c5597afbe"
      unitRef="pure">0.0003</oef:OtherExpensesOverAssets>
    <oef:OtherExpensesOverAssets
      contextRef="S000004084_C000213357"
      decimals="4"
      id="ab67041a-de64-4954-b977-88fde02e638a"
      unitRef="pure">0.0003</oef:OtherExpensesOverAssets>
    <oef:OtherExpensesOverAssets
      contextRef="S000004084_C000213356"
      decimals="4"
      id="aa1cca54-b7d5-4c5c-8257-98cd22d018bd"
      unitRef="pure">0.0015</oef:OtherExpensesOverAssets>
    <oef:ExpensesOverAssets
      contextRef="S000004084_C000011437"
      decimals="4"
      id="x_24baab32-34b3-47d9-95d2-1998e7aefa2d"
      unitRef="pure">0.0051</oef:ExpensesOverAssets>
    <oef:ExpensesOverAssets
      contextRef="S000004084_C000011438"
      decimals="4"
      id="b8bf3972-2e1d-4887-9542-b9430bf8f48c"
      unitRef="pure">0.0047</oef:ExpensesOverAssets>
    <oef:ExpensesOverAssets
      contextRef="S000004084_C000011439"
      decimals="4"
      id="x_72f8b6a0-111a-4dc2-9c26-5cff668cf221"
      unitRef="pure">0.0045</oef:ExpensesOverAssets>
    <oef:ExpensesOverAssets
      contextRef="S000004084_C000011440"
      decimals="4"
      id="x_01326fe4-774d-4be4-9967-c7a9bbc10c77"
      unitRef="pure">0.0042</oef:ExpensesOverAssets>
    <oef:ExpensesOverAssets
      contextRef="S000004084_C000213357"
      decimals="4"
      id="x_1ae91e14-180d-4a58-b622-fbde401b968f"
      unitRef="pure">0.0051</oef:ExpensesOverAssets>
    <oef:ExpensesOverAssets
      contextRef="S000004084_C000213356"
      decimals="4"
      id="e54c0c91-63ee-4ec5-9a6f-1d0f89d51669"
      unitRef="pure">0.0063</oef:ExpensesOverAssets>
    <oef:FeeWaiverOrReimbursementOverAssets
      contextRef="S000004084_C000011437"
      decimals="4"
      id="c3c410a5-424e-46db-9954-891a8f5f5dce"
      unitRef="pure">-0.0000</oef:FeeWaiverOrReimbursementOverAssets>
    <oef:FeeWaiverOrReimbursementOverAssets
      contextRef="S000004084_C000011438"
      decimals="4"
      id="x_1f04063c-ce90-4027-b844-37ea60c9b072"
      unitRef="pure">-0.0000</oef:FeeWaiverOrReimbursementOverAssets>
    <oef:FeeWaiverOrReimbursementOverAssets
      contextRef="S000004084_C000011439"
      decimals="4"
      id="f58ebd4a-a5b7-44b2-bc13-32f4fc5fa04c"
      unitRef="pure">-0.0000</oef:FeeWaiverOrReimbursementOverAssets>
    <oef:FeeWaiverOrReimbursementOverAssets
      contextRef="S000004084_C000011440"
      decimals="4"
      id="x_3d76bf1a-6d74-4c0f-971c-7e92e582ee0b"
      unitRef="pure">-0.0000</oef:FeeWaiverOrReimbursementOverAssets>
    <oef:FeeWaiverOrReimbursementOverAssets
      contextRef="S000004084_C000213357"
      decimals="4"
      id="x_582540f4-3685-49f4-9a0f-f85dceeac618"
      unitRef="pure">-0.0000</oef:FeeWaiverOrReimbursementOverAssets>
    <oef:FeeWaiverOrReimbursementOverAssets
      contextRef="S000004084_C000213356"
      decimals="4"
      id="x_9c1841f9-22bb-418d-ac6c-67ba7fadd27e"
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    <oef:NetExpensesOverAssets
      contextRef="S000004084_C000011437"
      decimals="4"
      id="x_99c2127a-46d6-4458-9510-f1c98b6cbf72"
      unitRef="pure">0.0051</oef:NetExpensesOverAssets>
    <oef:NetExpensesOverAssets
      contextRef="S000004084_C000011438"
      decimals="4"
      id="d0d55d26-a727-4ddf-bfcb-ea08dfcd6f64"
      unitRef="pure">0.0047</oef:NetExpensesOverAssets>
    <oef:NetExpensesOverAssets
      contextRef="S000004084_C000011439"
      decimals="4"
      id="x_52f2c12c-3fb1-4487-a633-29ecb1c62b53"
      unitRef="pure">0.0045</oef:NetExpensesOverAssets>
    <oef:NetExpensesOverAssets
      contextRef="S000004084_C000011440"
      decimals="4"
      id="x_922eacf4-94c2-4eac-ac94-84172033c49c"
      unitRef="pure">0.0042</oef:NetExpensesOverAssets>
    <oef:NetExpensesOverAssets
      contextRef="S000004084_C000213357"
      decimals="4"
      id="x_045b88d5-61f3-42b1-8ce3-f2aeb3a8e5d2"
      unitRef="pure">0.0051</oef:NetExpensesOverAssets>
    <oef:NetExpensesOverAssets
      contextRef="S000004084_C000213356"
      decimals="4"
      id="c7bc9c2f-598d-44b4-b7c9-1bbdd1dc8a34"
      unitRef="pure">0.0063</oef:NetExpensesOverAssets>
    <oef:FeeWaiverOrReimbursementOverAssetsDateOfTermination
      contextRef="S000004084"
      id="x_78061a7e-c6ea-4612-a98d-251147e6c5f5">&lt;span style="color:#000000;font-family:Times New Roman;font-size:8pt;font-style:italic;"&gt;June 30, 2026&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:8pt;font-style:italic;"&gt;June 30, 2026&lt;/span&gt;</oef:FeeWaiverOrReimbursementOverAssetsDateOfTermination>
    <oef:ExpenseExampleHeading
      contextRef="S000004084"
      id="a506a8c8-cf43-4e1d-98a2-9053c57a3e48">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-weight:bold;"&gt;Example&lt;/span&gt;</oef:ExpenseExampleHeading>
    <oef:ExpenseExampleNarrativeTextBlock
      contextRef="S000004084"
      id="x_5cbb0672-7baf-46b0-9b45-89889d5d1e14">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;margin-left:3.76%;"&gt;This example is intended to help you compare the cost of investing in the Fund with the cost of investing in other funds. The &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;example assumes that you invest $10,000 in the Fund for the time periods indicated, regardless of whether or not you redeem your shares at the end of such periods. The example also assumes that your investment has a 5% return each year and that the Fund&#x2019;s operating expenses remain the same as those shown in the table. The one year amounts shown reflect the expense reimbursement and waiver noted in the expense table. Although your actual costs may be higher or lower, based on these assumptions your costs would be:&lt;/span&gt;</oef:ExpenseExampleNarrativeTextBlock>
    <oef:ExpenseExampleYear01
      contextRef="S000004084_C000011437"
      decimals="INF"
      id="x_7e14d164-7ad1-437a-854c-be1de89104c1"
      unitRef="USD">52</oef:ExpenseExampleYear01>
    <oef:ExpenseExampleYear03
      contextRef="S000004084_C000011437"
      decimals="INF"
      id="x_02b9c781-53e7-495b-aea2-e6358bf8d438"
      unitRef="USD">164</oef:ExpenseExampleYear03>
    <oef:ExpenseExampleYear05
      contextRef="S000004084_C000011437"
      decimals="INF"
      id="c331c91d-4f26-4946-9910-2e980b02dab4"
      unitRef="USD">285</oef:ExpenseExampleYear05>
    <oef:ExpenseExampleYear10
      contextRef="S000004084_C000011437"
      decimals="INF"
      id="x_1e2d335d-f181-4c4f-ae77-b619a412266a"
      unitRef="USD">640</oef:ExpenseExampleYear10>
    <oef:ExpenseExampleYear01
      contextRef="S000004084_C000011438"
      decimals="INF"
      id="x_5273536f-8136-4f00-af93-ef1a8f044f78"
      unitRef="USD">48</oef:ExpenseExampleYear01>
    <oef:ExpenseExampleYear03
      contextRef="S000004084_C000011438"
      decimals="INF"
      id="x_9a4f4d86-d220-4088-b9bd-4e9251f5bc8b"
      unitRef="USD">151</oef:ExpenseExampleYear03>
    <oef:ExpenseExampleYear05
      contextRef="S000004084_C000011438"
      decimals="INF"
      id="b387dbb4-71ad-47ae-983b-26a3848470f6"
      unitRef="USD">263</oef:ExpenseExampleYear05>
    <oef:ExpenseExampleYear10
      contextRef="S000004084_C000011438"
      decimals="INF"
      id="a675d0ea-211c-4556-9321-b29eb0012433"
      unitRef="USD">591</oef:ExpenseExampleYear10>
    <oef:ExpenseExampleYear01
      contextRef="S000004084_C000011439"
      decimals="INF"
      id="x_3f7b15ee-2aeb-4ed5-8dff-510dddcb4b69"
      unitRef="USD">46</oef:ExpenseExampleYear01>
    <oef:ExpenseExampleYear03
      contextRef="S000004084_C000011439"
      decimals="INF"
      id="x_1071ab26-119e-4fc3-ad65-dda4509ded86"
      unitRef="USD">144</oef:ExpenseExampleYear03>
    <oef:ExpenseExampleYear05
      contextRef="S000004084_C000011439"
      decimals="INF"
      id="x_34df05e9-effe-479a-a369-469a166e8b2e"
      unitRef="USD">252</oef:ExpenseExampleYear05>
    <oef:ExpenseExampleYear10
      contextRef="S000004084_C000011439"
      decimals="INF"
      id="d2164155-5406-44b9-9e68-ead55846c695"
      unitRef="USD">567</oef:ExpenseExampleYear10>
    <oef:ExpenseExampleYear01
      contextRef="S000004084_C000011440"
      decimals="INF"
      id="x_4d24a0e3-6c79-4512-be08-b3decde135c0"
      unitRef="USD">43</oef:ExpenseExampleYear01>
    <oef:ExpenseExampleYear03
      contextRef="S000004084_C000011440"
      decimals="INF"
      id="x_340b75ef-4e17-4d9d-8543-08c4ef7ac267"
      unitRef="USD">135</oef:ExpenseExampleYear03>
    <oef:ExpenseExampleYear05
      contextRef="S000004084_C000011440"
      decimals="INF"
      id="x_82a57e4a-52c0-48b6-b013-72d9691775fd"
      unitRef="USD">235</oef:ExpenseExampleYear05>
    <oef:ExpenseExampleYear10
      contextRef="S000004084_C000011440"
      decimals="INF"
      id="x_301e8695-0936-4db8-af66-ed656d27d3cf"
      unitRef="USD">530</oef:ExpenseExampleYear10>
    <oef:ExpenseExampleYear01
      contextRef="S000004084_C000213357"
      decimals="INF"
      id="x_76e05297-c8e5-43aa-addc-96eaffc684d7"
      unitRef="USD">52</oef:ExpenseExampleYear01>
    <oef:ExpenseExampleYear03
      contextRef="S000004084_C000213357"
      decimals="INF"
      id="caf00b0a-01ff-4477-a6c5-d5a804c49096"
      unitRef="USD">164</oef:ExpenseExampleYear03>
    <oef:ExpenseExampleYear05
      contextRef="S000004084_C000213357"
      decimals="INF"
      id="x_2b6d7e42-e8ee-4187-b00e-a2dec166409d"
      unitRef="USD">285</oef:ExpenseExampleYear05>
    <oef:ExpenseExampleYear10
      contextRef="S000004084_C000213357"
      decimals="INF"
      id="x_021bc4c5-233c-4889-9546-adb89066fe18"
      unitRef="USD">640</oef:ExpenseExampleYear10>
    <oef:ExpenseExampleYear01
      contextRef="S000004084_C000213356"
      decimals="INF"
      id="x_123aa89d-489d-4547-b395-ace627295c15"
      unitRef="USD">64</oef:ExpenseExampleYear01>
    <oef:ExpenseExampleYear03
      contextRef="S000004084_C000213356"
      decimals="INF"
      id="b09f9d40-3042-4df0-ace1-1726097fb84a"
      unitRef="USD">202</oef:ExpenseExampleYear03>
    <oef:ExpenseExampleYear05
      contextRef="S000004084_C000213356"
      decimals="INF"
      id="d9dfc2b9-8485-4197-8310-363dd473c5e7"
      unitRef="USD">351</oef:ExpenseExampleYear05>
    <oef:ExpenseExampleYear10
      contextRef="S000004084_C000213356"
      decimals="INF"
      id="x_4e0ebb27-9aee-4256-9a6c-7b9d95a878cc"
      unitRef="USD">786</oef:ExpenseExampleYear10>
    <oef:PortfolioTurnoverHeading
      contextRef="S000004084"
      id="x_52a4ecf7-2a4a-4388-9632-a3908f02db6a">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-weight:bold;"&gt;Portfolio turnover&lt;/span&gt;</oef:PortfolioTurnoverHeading>
    <oef:PortfolioTurnoverTextBlock
      contextRef="S000004084"
      id="ac62531f-bdb1-4d65-b519-b964f0b422f0">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;margin-left:3.76%;"&gt;The Fund pays transaction costs, such as commissions, when it buys and sells securities. A higher portfolio turnover rate may &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;result in higher transaction costs and, for holders of Fund shares subject to U.S. taxes, higher income taxes. These transaction costs, which are not reflected in Annual Fund operating expenses or in the Example, affect the Fund&#x2019;s performance.&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; During its fiscal year &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;ended February 28, 2025, the Fund&#x2019;s portfolio turnover rate (excluding short-term investments) was &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;28&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;% of the average value of its portfolio securities.&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; That portfolio turnover rate includes investments in U.S. Treasury Fund, which the Fund uses as a short-term &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;investment vehicle for cash management. The Fund&#x2019;s portfolio turnover rate during its fiscal year ended February 28, 2025, excluding transactions in U.S. Treasury Fund and other short-term investments, was 16% of the average value of its portfolio securities.&lt;/span&gt;</oef:PortfolioTurnoverTextBlock>
    <oef:PortfolioTurnoverRate
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      decimals="4"
      id="d75706b2-b5c8-4702-8d97-c1d9b499f5f2"
      unitRef="pure">0.28</oef:PortfolioTurnoverRate>
    <oef:StrategyHeading
      contextRef="S000004084"
      id="x_530991ec-4f87-448b-b87c-c1804759c53d">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-weight:bold;"&gt;Principal investment strategies&lt;/span&gt;</oef:StrategyHeading>
    <oef:StrategyNarrativeTextBlock
      contextRef="S000004084"
      id="x_47d01069-6422-49f1-bbb0-353c7aec28fe">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;margin-left:3.76%;"&gt;GMO seeks to achieve the Fund&#x2019;s investment objective by investing the Fund&#x2019;s assets primarily in equities of companies that GMO &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;believes to be of high quality. GMO believes a high quality company generally to be a company that has an established business that will deliver a high level of return on past investments and that will use cash flows to make investments with the potential for a high return on capital or to return cash to shareholders through dividends or share buybacks. &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;margin-left:3.76%;"&gt;In selecting securities for the Fund, GMO uses a combination of investment methods, typically considering both (1) systematic &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;factors, based on profitability, profit stability, leverage, and other publicly available financial information, and (2) judgmental factors, based on GMO&#x2019;s assessment of future profitability, capital allocation, growth opportunities, and sustainability against competitive forces. GMO also may rely on valuation methodologies, such as discounted cash flow analysis and multiples of price to earnings, revenues, book values or other fundamental metrics. The Fund also is permitted to invest directly and indirectly (e.g., through underlying funds or derivatives) in equities of companies tied economically to any country in the world, including emerging countries.&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;margin-left:3.76%;"&gt;At times, the Fund may have substantial exposure to a single asset class, industry, sector, country, region, issuer, or currency and &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;companies with similar market capitalizations. The Fund may invest in securities of companies of any market capitalization. The factors GMO considers and investment methods GMO uses can change over time. GMO does not manage the Fund to, or control the Fund&#x2019;s risk relative to, any securities index or securities benchmark.&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;margin-left:3.76%;"&gt;As an alternative to investing directly in equities, the Fund may invest in exchange-traded and over-the-counter (OTC) derivatives &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;and exchange-traded funds (ETFs). The Fund also may invest in derivatives and ETFs in an attempt to obtain or adjust elements of its long or short investment exposure. Derivatives used may include futures, options, forward currency contracts, and swap contracts. In addition, the Fund may lend its portfolio securities.&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;margin-left:3.76%;"&gt;The Fund also may invest in U.S. Treasury Fund, in money market funds unaffiliated with GMO, and directly in the types of &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;investments typically held by money market funds.&lt;/span&gt;</oef:StrategyNarrativeTextBlock>
    <oef:RiskTextBlock
      contextRef="S000004084_RiskLoseMoneyMember"
      id="x_0834eb96-0ed6-4378-96d5-4af87fd900c9">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;Many factors can affect this value, and you may lose money by investing in the Fund.&lt;/span&gt;</oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="S000004084_RiskNotInsuredDepositoryInstitutionMember"
      id="x_8f33c063-0367-4b50-ae99-350dd63210f2">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;An investment in the Fund is not a bank deposit and is not insured or guaranteed by the FDIC or &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;any government agency.&lt;/span&gt;</oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="S000004084_MarketRiskEquitiesRiskMember"
      id="d3dde639-1c7b-436f-8bd5-2515d75a797c">&lt;span style="color:#000000;font-family:Times New Roman;font-size:8pt;"&gt;&#x25cf;&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-style:italic;"&gt;Market Risk &#x2013; Equities &#x2013; &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;The market price of an equity in the Fund&#x2019;s portfolio may decline due to factors affecting the issuer or its industry or the economy and equity markets generally. If the Fund purchases an equity for less than its fundamental fair (or intrinsic) value as assessed by GMO, the Fund runs the risk that the market price of the equity will not appreciate or will decline (for example, if GMO&#x2019;s assessment proves to be incorrect or the market fails to recognize the equity&#x2019;s intrinsic value). The Fund also may purchase equities that typically trade at higher multiples of current earnings than other securities, and the market prices of these equities often are more sensitive to changes in future earnings expectations and interest rates than the market prices of equities trading at lower multiples. Declines in stock market prices generally are likely to reduce the net asset value of the Fund&#x2019;s shares.&lt;/span&gt;</oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="S000004084_ManagementandOperationalRiskMember"
      id="x_57471025-f3a7-4e29-8fce-f15f2e9be364">&lt;span style="color:#000000;font-family:Times New Roman;font-size:8pt;"&gt;&#x25cf;&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-style:italic;"&gt;Management and Operational Risk&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; &#x2013; The Fund runs the risk that GMO&#x2019;s investment techniques will fail to produce intended results.&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;The Fund also runs the risk that GMO&#x2019;s assessment of an investment, including a security&#x2019;s fundamental fair (or intrinsic) value, is wrong or that deficiencies in GMO&#x2019;s or another service provider&#x2019;s internal systems or controls will cause losses for the Fund or impair Fund operations.&lt;/span&gt;</oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="S000004084_FocusedInvestmentRiskMember"
      id="x_42360e3d-1c70-42f1-ad8c-ae10ba58766d">&lt;span style="color:#000000;font-family:Times New Roman;font-size:8pt;"&gt;&#x25cf;&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-style:italic;"&gt;Focused Investment Risk&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; &#x2013; Investments in countries, regions, asset classes, sectors, industries, currencies, or issuers that are subject to the same or similar risk factors and investments whose market prices are closely correlated are subject to higher overall risk than investments that are more diversified or whose market prices are not as closely correlated.&lt;/span&gt;</oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="S000004084_NonUSInvestmentRiskMember"
      id="x_73a2cfa8-9fc9-4cbd-9b50-75d9cd84d8c4">&lt;span style="color:#000000;font-family:Times New Roman;font-size:8pt;"&gt;&#x25cf;&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-style:italic;"&gt;Non-U.S. Investment Risk&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; &#x2013; The market prices of many non-U.S. securities fluctuate more than those of U.S. securities. Many non-U.S. securities markets are less stable, smaller, less liquid, and less regulated than U.S. securities markets, and the cost of trading in those markets often is higher than in U.S. securities markets. In addition, non-U.S. securities issuers often are not subject to as much regulation as U.S. issuers, and the reporting, recordkeeping, accounting, custody, and auditing standards to which those issuers are subject often are not as rigorous as U.S. standards. In addition, the Fund is subject to taxation by countries other than the United States, including potentially on a retroactive basis, on (i) capital gains it realizes or dividends, interest, or other amounts it realizes or accrues in respect of non-U.S. investments; (ii) transactions in those investments; and (iii) repatriation of proceeds generated from the sale or other disposition of those investments.&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; Also, the Fund needs a license to invest directly in securities &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;traded in many non-U.S. securities markets, and the Fund is subject to the risk that its license is terminated or suspended. In some non-U.S. securities markets, prevailing custody and trade settlement practices (e.g., the requirement to pay for securities prior to receipt) expose the Fund to credit and other risks. Further, adverse changes in investment regulations, capital requirements or exchange controls could adversely affect the value of the Fund&#x2019;s investments. The risks above (such as substantial price fluctuations and market instability, illiquidity and lack of regulation) and other risks (e.g., nationalization, expropriation or other confiscation of &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;margin-left:0.00%;"&gt;assets of non-U.S. issuers, difficulties enforcing legal judgments or contractual rights and geopolitical risks) tend to be higher for investments in the securities of issuers tied economically to emerging countries. The economies of emerging countries often depend &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;predominantly on only a few industries or commodities and often are more volatile than the economies of developed countries.&lt;/span&gt;</oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="S000004084_CurrencyRiskMember"
      id="x_74170557-c3b3-4947-92f1-9f7b3b7d2421">&lt;span style="color:#000000;font-family:Times New Roman;font-size:8pt;"&gt;&#x25cf;&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-style:italic;"&gt;Currency Risk&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; &#x2013; Fluctuations in exchange rates can adversely affect the market value of the Fund&#x2019;s foreign currency holdings and investments denominated in foreign currencies.&lt;/span&gt;</oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="S000004084_MarketDisruptionandGeopoliticalRiskMember"
      id="b3cb5327-3626-4969-a568-349719aaea1b">&lt;span style="color:#000000;font-family:Times New Roman;font-size:8pt;"&gt;&#x25cf;&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-style:italic;"&gt;Market Disruption and Geopolitical Risk&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; &#x2013; Geopolitical and other events (e.g., wars, pandemics, sanctions, terrorism, diplomatic tensions, dramatic changes in regulatory and/or foreign policy, cyberattacks, and rapid technological developments such as artificial intelligence) often disrupt securities markets and adversely affect the general economy or particular economies and markets. Those events, as well as other changes in non-U.S. and U.S. economic and political conditions, could exacerbate other risks or otherwise reduce the value of the Fund&#x2019;s investments.&lt;/span&gt;</oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="S000004084_CounterpartyRiskMember"
      id="x_054f74a2-8ec6-4f77-a4de-359de73a8747">&lt;span style="color:#000000;font-family:Times New Roman;font-size:8pt;"&gt;&#x25cf;&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-style:italic;"&gt;Counterparty Risk&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; &#x2013; The Fund runs the risk that the counterparty to a derivatives contract or a clearing member used by the Fund to hold a cleared derivatives contract is unable or unwilling to make timely settlement payments, return the Fund&#x2019;s collateral or otherwise honor its obligations.&lt;/span&gt;</oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="S000004084_DerivativesandShortSalesRiskMember"
      id="x_1dbfa9fd-eb74-4e83-9168-0f76bfa712c5">&lt;span style="color:#000000;font-family:Times New Roman;font-size:8pt;"&gt;&#x25cf;&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-style:italic;"&gt;Derivatives and Short Sales Risk&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; &#x2013; The use of derivatives involves the risk that their value may not change as expected relative to changes in the value of the underlying assets, pools of assets, rates, currencies or indices. Derivatives also present other risks, including market risk, illiquidity risk, currency risk, credit risk, leveraging risk, commodities risk and counterparty risk. The market price of an option is affected by many factors, including changes in the market prices or dividend rates of underlying securities (or in the case of indices, the securities in such indices); the time remaining before expiration; changes in interest rates or exchange rates; and changes in the actual or perceived volatility of the relevant index or underlying securities. The Fund typically creates short investment exposure by selling securities short or by taking a derivative position in which the value of the derivative moves in the opposite direction from the price of an underlying asset, pool of assets, rate, currency or index. Specifically, the net asset value of the Fund&#x2019;s shares will be adversely affected if the securities or other assets that are the subject of the Fund&#x2019;s short exposures appreciate in value. The risk of loss associated with derivatives that provide short investment exposure and short sales of securities is theoretically unlimited.&lt;/span&gt;</oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="S000004084_LeveragingRiskMember"
      id="x_878c4f87-2709-4098-a729-7fb03ab9cd74">&lt;span style="color:#000000;font-family:Times New Roman;font-size:8pt;"&gt;&#x25cf;&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-style:italic;"&gt;Leveraging Risk&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; &#x2013; The use of derivatives, short sales and securities lending can create leverage. Leverage increases the Fund&#x2019;s losses when the value of its investments (including derivatives) declines. In addition, the Fund&#x2019;s portfolio will be leveraged if it exercises its right to delay payment on a redemption and the value of the Fund&#x2019;s assets declines between the time a redemption request is treated as being received by the Fund and the time the Fund liquidates assets to fund that redemption.&lt;/span&gt;</oef:RiskTextBlock>
    <oef:BarChartAndPerformanceTableHeading
      contextRef="S000004084"
      id="x_156e5583-d2c8-47be-8063-5466af791cb6">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-weight:bold;"&gt;Performance&lt;/span&gt;</oef:BarChartAndPerformanceTableHeading>
    <oef:PerformanceNarrativeTextBlock
      contextRef="S000004084"
      id="x_8c157180-5127-4150-842c-0a50b78640b4">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;margin-left:3.76%;"&gt;The bar chart and table below provide some indication of the risks of investing in the Fund by showing changes in the Fund&#x2019;s &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;annual total returns from year to year for the periods indicated and by comparing the Fund&#x2019;s average annual total returns for different calendar periods with those of a broad-based securities market index.&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; Share classes not shown would have substantially similar annual &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;returns to those below because all share classes invest in the same portfolio of securities. Annual returns vary among share classes to the extent that they bear different expenses. Share classes that bear higher expenses than the share classes shown below would have lower returns. &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;After-tax returns are calculated using the historical highest individual federal marginal income tax rates and do not reflect the &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;impact of state and local taxes.&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; Actual after-tax returns depend on your tax situation and may differ from those shown. After-tax returns &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;shown are not relevant if you are tax-exempt or if you hold your Fund shares through tax-advantaged arrangements (such as a 401(k) plan or individual retirement account). &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;After-tax returns are shown for Class III shares only; after-tax returns for other classes &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;will vary.&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; Updated performance information for the Fund is available at &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;www.gmo.com&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;. &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;Past performance (before and after taxes) is not an indication of future performance.&lt;/span&gt;</oef:PerformanceNarrativeTextBlock>
    <oef:PerformanceInformationIllustratesVariabilityOfReturns
      contextRef="S000004084"
      id="a3444f5d-88e4-49d0-b7ba-8ebb8e994fcc">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;margin-left:3.76%;"&gt;The bar chart and table below provide some indication of the risks of investing in the Fund by showing changes in the Fund&#x2019;s &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;annual total returns from year to year for the periods indicated and by comparing the Fund&#x2019;s average annual total returns for different calendar periods with those of a broad-based securities market index.&lt;/span&gt;</oef:PerformanceInformationIllustratesVariabilityOfReturns>
    <oef:PerformanceTableUsesHighestFederalRate
      contextRef="S000004084"
      id="x_5e14e4cb-b3d7-4115-9a83-4ddc399fa3b7">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;After-tax returns are calculated using the historical highest individual federal marginal income tax rates and do not reflect the &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;impact of state and local taxes.&lt;/span&gt;</oef:PerformanceTableUsesHighestFederalRate>
    <oef:PerformanceTableNotRelevantToTaxDeferred
      contextRef="S000004084"
      id="df7daa81-0db8-4c4d-844c-8fa558a72de4">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; Actual after-tax returns depend on your tax situation and may differ from those shown. After-tax returns &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;shown are not relevant if you are tax-exempt or if you hold your Fund shares through tax-advantaged arrangements (such as a 401(k) plan or individual retirement account). &lt;/span&gt;</oef:PerformanceTableNotRelevantToTaxDeferred>
    <oef:PerformanceTableOneClassOfAfterTaxShown
      contextRef="S000004084"
      id="x_1bb5ffb9-2f41-402b-9705-0f996ed4f320">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;After-tax returns are shown for Class III shares only; after-tax returns for other classes &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;will vary.&lt;/span&gt;</oef:PerformanceTableOneClassOfAfterTaxShown>
    <oef:PerformanceAvailabilityWebSiteAddress
      contextRef="S000004084"
      id="a6a2b9cc-d866-4d92-b7e4-12c482ff4c93">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;www.gmo.com&lt;/span&gt;</oef:PerformanceAvailabilityWebSiteAddress>
    <oef:PerformancePastDoesNotIndicateFuture
      contextRef="S000004084"
      id="x_6496bf0c-f9ed-4518-b0a5-15c5dd255f57">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;Past performance (before and after taxes) is not an indication of future performance.&lt;/span&gt;</oef:PerformancePastDoesNotIndicateFuture>
    <oef:BarChartHeading
      contextRef="S000004084"
      id="e28b616b-bf48-4c39-91e7-d66ab2097efc">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-weight:bold;"&gt;Annual Total Returns/Class III Shares&lt;/span&gt; &lt;br/&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;Years Ending December 31&lt;/span&gt;</oef:BarChartHeading>
    <oef:BarChartClosingTextBlock
      contextRef="S000004084"
      id="e44d5dfa-5693-468f-a207-88ece84910e7">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;Highest Quarter:&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;16.03%&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;-sec-ix-hidden:x_14f22506-5a40-42b9-a72b-8bf5fa968c93"&gt;2Q 2020&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;Lowest Quarter:&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;-16.42%&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;-sec-ix-hidden:e2a17860-3b0b-47b3-a384-87ca61ab9c0e"&gt;1Q 2020&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;Year-to-Date:&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;-1.01%&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;As of&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;3/31/2025&lt;/span&gt;</oef:BarChartClosingTextBlock>
    <oef:HighestQuarterlyReturnLabel
      contextRef="S000004084_C000011437"
      id="x_1a2a28ee-1036-4897-957b-9049b0d1dbf3">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;Highest Quarter:&lt;/span&gt;</oef:HighestQuarterlyReturnLabel>
    <oef:BarChartHighestQuarterlyReturn
      contextRef="S000004084_C000011437"
      decimals="4"
      id="ce9db977-64cf-4a07-bec3-7029ad3d1fbb"
      unitRef="pure">0.1603</oef:BarChartHighestQuarterlyReturn>
    <oef:LowestQuarterlyReturnLabel
      contextRef="S000004084_C000011437"
      id="x_57c1a26e-c3c3-4140-a248-69c4def7e051">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;Lowest Quarter:&lt;/span&gt;</oef:LowestQuarterlyReturnLabel>
    <oef:BarChartLowestQuarterlyReturn
      contextRef="S000004084_C000011437"
      decimals="4"
      id="ffbdfb77-4ed1-4b36-8c8e-343c3105cc93"
      unitRef="pure">-0.1642</oef:BarChartLowestQuarterlyReturn>
    <oef:YearToDateReturnLabel
      contextRef="S000004084_C000011437"
      id="x_0341e059-c586-441c-a0f0-6f28b041aba1">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;Year-to-Date:&lt;/span&gt;</oef:YearToDateReturnLabel>
    <oef:BarChartYearToDateReturn
      contextRef="S000004084_C000011437"
      decimals="4"
      id="ea769b3f-34b1-4279-87cb-acbbbc96531e"
      unitRef="pure">-0.0101</oef:BarChartYearToDateReturn>
    <oef:BarChartYearToDateReturnDate
      contextRef="S000004084_C000011437"
      id="x_5cd0aa88-4da7-4a24-aab0-da88051cd396">2025-03-31</oef:BarChartYearToDateReturnDate>
    <oef:PerformanceTableHeading
      contextRef="S000004084"
      id="x_88eaf792-06f9-4bc2-b4e5-025fba684915">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-weight:bold;"&gt;Average Annual Total Returns&lt;/span&gt; &lt;br/&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;Periods Ending December 31, 2024&lt;/span&gt;</oef:PerformanceTableHeading>
    <oef:PerfInceptionDate
      contextRef="C000011437"
      id="fbc47c0a-01c2-4f47-baea-15ce033bdd8f">2004-02-06</oef:PerfInceptionDate>
    <oef:AvgAnnlRtrPct
      contextRef="C000011437_01Jan2024_31Dec2024"
      decimals="4"
      id="ef2386c7-c52d-479f-9606-a464b7b523d5"
      unitRef="pure">0.1892</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000011437_01Jan2020_31Dec2024"
      decimals="4"
      id="x_52b552c8-d234-49d0-ab0a-45a0cb8c2ee1"
      unitRef="pure">0.1440</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000011437_01Jan2015_31Dec2024"
      decimals="4"
      id="ef97318d-1e38-435b-b0b6-a1933ceb941e"
      unitRef="pure">0.1406</oef:AvgAnnlRtrPct>
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      contextRef="C000011437_AfterTaxesOnDistributionsMember_01Jan2020_31Dec2024"
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      id="ea1a61e6-0638-4ca2-801b-7d12255d69cd"
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      contextRef="C000011437_AfterTaxesOnDistributionsMember_06Feb2004_31Dec2024"
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      id="x_74a93e99-f4b4-4c6b-b99f-01376663a473"
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      contextRef="C000011437_AfterTaxesOnDistributionsAndSalesMember_01Jan2020_31Dec2024"
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      id="x_273c3297-120b-4cec-bc4f-3b3c80a072b8"
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      decimals="4"
      id="x_722e548b-b44c-4725-a1ba-3a97fa606a0b"
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      contextRef="C000011437_AfterTaxesOnDistributionsAndSalesMember_06Feb2004_31Dec2024"
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      id="x_078e7d49-9131-4679-8098-7043e17c5fbf"
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      contextRef="C000011437_SandP500IndexMember_01Jan2024_31Dec2024"
      decimals="4"
      id="x_72c4d1b4-c24d-4525-8e53-5e5d6535eb82"
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      contextRef="C000011437_SandP500IndexMember_01Jan2020_31Dec2024"
      decimals="4"
      id="x_4dad712e-7458-4986-bcff-8d32ef8ecc3a"
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      contextRef="C000011437_SandP500IndexMember_01Jan2015_31Dec2024"
      decimals="4"
      id="b326e0a8-cbd5-48c9-b699-f1245bc178e2"
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      contextRef="C000011437_SandP500IndexMember_06Feb2004_31Dec2024"
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      id="c7a5f5a2-1453-49cd-b6d6-f0e833b00889"
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      contextRef="C000011438"
      id="x_9d4c63de-0d56-4490-a93e-bfffc027a147">2004-02-06</oef:PerfInceptionDate>
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      contextRef="C000011438_01Jan2024_31Dec2024"
      decimals="4"
      id="x_4c302160-930b-47dd-8b7e-75c0f2e79d73"
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      id="af37d1f7-81af-4f0c-be15-c3e2e3900322"
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      contextRef="C000011438_01Jan2015_31Dec2024"
      decimals="4"
      id="x_2e64e38a-29ed-4d9d-ac37-10e2bced3b39"
      unitRef="pure">0.1411</oef:AvgAnnlRtrPct>
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      contextRef="C000011438_06Feb2004_31Dec2024"
      decimals="4"
      id="x_60b46d42-3c1e-4eb0-84bc-fa82c1d23a7e"
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      decimals="4"
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      contextRef="C000011438_SandP500IndexMember_01Jan2020_31Dec2024"
      decimals="4"
      id="x_52f8b0f8-5f5f-422d-80fc-05d932b1b7e0"
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      contextRef="C000011438_SandP500IndexMember_01Jan2015_31Dec2024"
      decimals="4"
      id="x_82e82457-bd76-43da-8119-73f8f55d41f1"
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      contextRef="C000011438_SandP500IndexMember_06Feb2004_31Dec2024"
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      id="x_35a86bcf-d762-422d-b3b8-cfb43811c1c4"
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      contextRef="C000011440"
      id="x_4a5d05b2-12f2-4492-aed1-8beec908c40a">2006-12-08</oef:PerfInceptionDate>
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      contextRef="C000011440_01Jan2024_31Dec2024"
      decimals="4"
      id="x_9480141f-3969-456b-a4e6-0f02c2f600af"
      unitRef="pure">0.1904</oef:AvgAnnlRtrPct>
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      contextRef="C000011440_01Jan2020_31Dec2024"
      decimals="4"
      id="x_99ab800d-18f3-4de3-82b4-543631ed7fe2"
      unitRef="pure">0.1451</oef:AvgAnnlRtrPct>
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      contextRef="C000011440_01Jan2015_31Dec2024"
      decimals="4"
      id="a2731e26-bef3-4461-a044-9406f06322ff"
      unitRef="pure">0.1416</oef:AvgAnnlRtrPct>
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      contextRef="C000011440_08Dec2006_31Dec2024"
      decimals="4"
      id="x_0596691d-1805-4625-a46b-997a6cab65d6"
      unitRef="pure">0.1127</oef:AvgAnnlRtrPct>
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      contextRef="C000011440_SandP500IndexMember_01Jan2024_31Dec2024"
      decimals="4"
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      unitRef="pure">0.2502</oef:AvgAnnlRtrPct>
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      contextRef="C000011440_SandP500IndexMember_01Jan2020_31Dec2024"
      decimals="4"
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      contextRef="C000011440_SandP500IndexMember_01Jan2015_31Dec2024"
      decimals="4"
      id="x_89c9130c-e652-48e2-85b6-408a498c39bc"
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      contextRef="C000011440_SandP500IndexMember_08Dec2006_31Dec2024"
      decimals="4"
      id="x_8f0982e3-2df7-43e1-81ba-04cc27c24ac9"
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      contextRef="C000213357"
      id="bd4d132a-7895-4246-805f-562b94584e27">2019-11-12</oef:PerfInceptionDate>
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      contextRef="C000213357_01Jan2024_31Dec2024"
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      id="x_29f5a9ad-44cf-441e-a26d-692c16f06bb7"
      unitRef="pure">0.1895</oef:AvgAnnlRtrPct>
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      contextRef="C000213357_01Jan2020_31Dec2024"
      decimals="4"
      id="x_8e0d3e1f-8eca-41ec-927d-2f4bb35e3ed5"
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      contextRef="C000213357_12Nov2019_31Dec2024"
      decimals="4"
      id="x_3779ef6b-be2e-4740-a763-c7fed6317bf3"
      unitRef="pure">0.1511</oef:AvgAnnlRtrPct>
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      decimals="4"
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      decimals="4"
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      contextRef="C000213357_SandP500IndexMember_12Nov2019_31Dec2024"
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      contextRef="C000213356"
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      contextRef="C000213356_01Jan2024_31Dec2024"
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      id="ea0e1c0c-0561-4d77-b300-4bcec45259f8"
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      id="x_283c0567-2304-4b89-b87f-064f6cd3d733"
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      contextRef="C000213356_26Sep2019_31Dec2024"
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      id="x_3ce50c19-a4d8-46bb-bbf1-13babc073869"
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      contextRef="C000213356_SandP500IndexMember_01Jan2020_31Dec2024"
      decimals="4"
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      contextRef="C000213356_SandP500IndexMember_26Sep2019_31Dec2024"
      decimals="4"
      id="b9e79c2a-3fed-4c12-b9aa-84a346e80ece"
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    <oef:ObjectiveHeading
      contextRef="S000034948"
      id="x_5b13e59a-2050-48ef-a8ce-2236052645e8">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-weight:bold;"&gt;Investment objective&lt;/span&gt;</oef:ObjectiveHeading>
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      id="c9aa3ada-f891-41fd-bdeb-69a38b8b359d">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;Total return.&lt;/span&gt;</oef:ObjectivePrimaryTextBlock>
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      id="d7f55468-7726-4d93-9e0b-b974bd2cd90b">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-weight:bold;"&gt;Fees and expenses&lt;/span&gt;</oef:ExpenseHeading>
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      id="x_078bf6b3-5f87-4f5c-97b9-1075ee476209">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;margin-left:3.76%;"&gt;The table below describes the fees and expenses that you may bear for each class of shares if you buy, hold, and sell shares of the &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;Fund. You may pay other fees, such as brokerage commissions and other fees to financial intermediaries, which are not reflected in the table and example below.&lt;/span&gt;</oef:ExpenseNarrativeTextBlock>
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      id="de0ddc3c-5847-4ff3-a9f6-855617bf191c">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-weight:bold;"&gt;Annual Fund operating expenses &lt;/span&gt; &lt;br/&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;(expenses that you bear each year as a percentage of the value of your investment)&lt;/span&gt;</oef:OperatingExpensesCaption>
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      id="x_610151bd-94d3-4aaa-8a24-2e5569710935"
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      contextRef="S000034948_C000107486"
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      id="b4c9270e-bf38-4b39-a367-97d59a904316"
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      id="x_3eea585b-926e-4461-ba26-f8dd12882541"
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      contextRef="S000034948_C000213393"
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      id="x_464c05ee-b69f-473d-869f-e9d42f649a67"
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      contextRef="S000034948_C000213392"
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      id="f18f0c56-add4-47c4-ab99-80a431a8b97b"
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      contextRef="S000034948_C000107485"
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      contextRef="S000034948_C000107486"
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      id="x_7ee930c4-3251-4fa1-9a92-8db67900bf3c"
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      contextRef="S000034948_C000213392"
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      contextRef="S000034948_C000107485"
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      id="x_900d3ba2-dfb0-4a6f-8304-2048441d95f2"
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      id="x_7c20d361-0c12-4c45-9e15-3c4ab255a1e7"
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      id="da0c9c08-2e52-4cb6-b00c-07144639cea4"
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      id="a77d27a7-dedc-4a05-bfdd-dc365ce047e9"
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      id="c81c6152-fed7-4f6c-90a6-ae0880424726"
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      contextRef="S000034948_C000107485"
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      id="x_17cc4e99-6bf1-4bf1-9dfa-769ea0ab9cdd"
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      contextRef="S000034948_C000107486"
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      id="dd102a37-23e7-4d04-b4f9-3f9ddbce2e3b"
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      contextRef="S000034948_C000107487"
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      contextRef="S000034948_C000107488"
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      contextRef="S000034948_C000213393"
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      id="d490fd63-6a9f-42df-9d06-ec9768f5eedd">&lt;span style="color:#000000;font-family:Times New Roman;font-size:8pt;font-style:italic;"&gt;June 30, 2026&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:8pt;font-style:italic;"&gt;June 30, 2026&lt;/span&gt;</oef:FeeWaiverOrReimbursementOverAssetsDateOfTermination>
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      id="e147ea0f-b6bc-4566-95be-0ebda7f17b77">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-weight:bold;"&gt;Example&lt;/span&gt;</oef:ExpenseExampleHeading>
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      id="x_80c2bc78-c7ad-42f2-a9be-c3d8c3c3a350">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;margin-left:3.76%;"&gt;This example is intended to help you compare the cost of investing in the Fund with the cost of investing in other funds. The &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;example assumes that you invest $10,000 in the Fund for the time periods indicated, regardless of whether or not you redeem your shares at the end of such periods. The example also assumes that your investment has a 5% return each year and that the Fund&#x2019;s operating expenses remain the same as those shown in the table. The one year amounts shown reflect the expense reimbursement and waiver noted in the expense table. Although your actual costs may be higher or lower, based on these assumptions your costs would be:&lt;/span&gt;</oef:ExpenseExampleNarrativeTextBlock>
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      decimals="INF"
      id="a4d8aacc-9b1d-4300-9526-9ea7e391eb11"
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      decimals="INF"
      id="x_9b524a73-43c9-42fa-a623-c8022b13eda0"
      unitRef="USD">230</oef:ExpenseExampleYear03>
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      decimals="INF"
      id="x_405cb70f-d6c7-4f51-ad3d-afc4a6d3ec6f"
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      contextRef="S000034948_C000107485"
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      id="c6eeae0a-8c05-40ac-ae5a-2b3f1339d84d"
      unitRef="USD">894</oef:ExpenseExampleYear10>
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      contextRef="S000034948_C000107486"
      decimals="INF"
      id="x_20578e1f-d2e2-4914-b6f6-33906387e11f"
      unitRef="USD">68</oef:ExpenseExampleYear01>
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      contextRef="S000034948_C000107486"
      decimals="INF"
      id="x_4732d9ea-5fc1-4363-9ddd-ebe17ffcef35"
      unitRef="USD">214</oef:ExpenseExampleYear03>
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      contextRef="S000034948_C000107486"
      decimals="INF"
      id="cdf42f5e-8a58-479d-8599-e6b15f5a5907"
      unitRef="USD">373</oef:ExpenseExampleYear05>
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      contextRef="S000034948_C000107486"
      decimals="INF"
      id="x_7adc54e0-1148-4b48-852c-9f0e0630abaf"
      unitRef="USD">835</oef:ExpenseExampleYear10>
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      contextRef="S000034948_C000107487"
      decimals="INF"
      id="ce4f33be-3334-460a-8236-a6ce93b6bddb"
      unitRef="USD">67</oef:ExpenseExampleYear01>
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      contextRef="S000034948_C000107487"
      decimals="INF"
      id="df74088f-59f0-4ae7-9b28-d2bceadd0243"
      unitRef="USD">211</oef:ExpenseExampleYear03>
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      contextRef="S000034948_C000107487"
      decimals="INF"
      id="e0c03d92-5aa1-4618-b134-117bcbd6a25f"
      unitRef="USD">368</oef:ExpenseExampleYear05>
    <oef:ExpenseExampleYear10
      contextRef="S000034948_C000107487"
      decimals="INF"
      id="x_75930200-aac8-46d8-83f0-cb4b4cf1f018"
      unitRef="USD">822</oef:ExpenseExampleYear10>
    <oef:ExpenseExampleYear01
      contextRef="S000034948_C000107488"
      decimals="INF"
      id="x_44a3b840-7b2b-4331-80e8-b4752e4d25f1"
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      decimals="INF"
      id="a1e9575f-d8ca-40f8-883c-298290adec6e"
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    <oef:ExpenseExampleYear05
      contextRef="S000034948_C000107488"
      decimals="INF"
      id="d10213c8-7e98-42d4-bb19-bbe706f2bcad"
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    <oef:ExpenseExampleYear10
      contextRef="S000034948_C000107488"
      decimals="INF"
      id="f55e1065-1107-4585-aa77-a0f5fc981aa2"
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    <oef:ExpenseExampleYear01
      contextRef="S000034948_C000213393"
      decimals="INF"
      id="f57c2200-821a-4b1c-8bcd-57a66dcddd2d"
      unitRef="USD">74</oef:ExpenseExampleYear01>
    <oef:ExpenseExampleYear03
      contextRef="S000034948_C000213393"
      decimals="INF"
      id="ee33ddab-5590-408a-b45a-6cc6e22070fa"
      unitRef="USD">230</oef:ExpenseExampleYear03>
    <oef:ExpenseExampleYear05
      contextRef="S000034948_C000213393"
      decimals="INF"
      id="e080c052-3697-4084-b526-4ea60be9c1f4"
      unitRef="USD">401</oef:ExpenseExampleYear05>
    <oef:ExpenseExampleYear10
      contextRef="S000034948_C000213393"
      decimals="INF"
      id="x_09e4a65f-28a8-4239-9bd4-68aed969e38b"
      unitRef="USD">894</oef:ExpenseExampleYear10>
    <oef:ExpenseExampleYear01
      contextRef="S000034948_C000213392"
      decimals="INF"
      id="f9beee9b-38b6-4e64-910d-2c7edf5feee3"
      unitRef="USD">86</oef:ExpenseExampleYear01>
    <oef:ExpenseExampleYear03
      contextRef="S000034948_C000213392"
      decimals="INF"
      id="x_2278a1e1-aa53-4b1e-b726-a4775c334faf"
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      contextRef="S000034948_C000213392"
      decimals="INF"
      id="x_25f278ab-8005-4cc3-91ce-aab808b16c40"
      unitRef="USD">466</oef:ExpenseExampleYear05>
    <oef:ExpenseExampleYear10
      contextRef="S000034948_C000213392"
      decimals="INF"
      id="x_7e02a60b-479d-46a2-bb59-6b9dc596b750"
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    <oef:PortfolioTurnoverHeading
      contextRef="S000034948"
      id="c5b0d073-d9e5-41c6-a141-1a86d6b62fd3">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-weight:bold;"&gt;Portfolio turnover&lt;/span&gt;</oef:PortfolioTurnoverHeading>
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      id="x_979e51e0-fb64-4476-b260-01026de8be6a">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;margin-left:3.76%;"&gt;The Fund pays transaction costs, such as commissions, when it buys and sells securities. A higher portfolio turnover rate may &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;result in higher transaction costs and, for holders of Fund shares subject to U.S. taxes, higher income taxes. These transaction costs, which are not reflected in Annual Fund operating expenses or in the Example, affect the Fund&#x2019;s performance.&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; During its fiscal year &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;ended February 28, 2025, the Fund&#x2019;s portfolio turnover rate (excluding short-term investments) was &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;79&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;% of the average value of its portfolio securities.&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; That portfolio turnover rate includes investments in U.S. Treasury Fund, which the Fund uses as a short-term &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;investment vehicle for cash management. The Fund&#x2019;s portfolio turnover rate during its fiscal year ended February 28, 2025, excluding transactions in U.S. Treasury Fund and other short-term investments, was 48% of the average value of its portfolio securities.&lt;/span&gt;</oef:PortfolioTurnoverTextBlock>
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      unitRef="pure">0.79</oef:PortfolioTurnoverRate>
    <oef:StrategyHeading
      contextRef="S000034948"
      id="x_93978cbe-3c5a-4aee-ba58-919c2ca7d3b4">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-weight:bold;"&gt;Principal investment strategies&lt;/span&gt;</oef:StrategyHeading>
    <oef:StrategyNarrativeTextBlock
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      id="x_0bd1c832-7332-4eed-b691-37ae14d4f16c">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;margin-left:3.76%;"&gt;GMO seeks to achieve the Fund&#x2019;s investment objective by investing the Fund&#x2019;s assets primarily in equities of companies in the &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;natural resources sector (as defined below). Given global population growth, the industrialization of emerging countries, and the clean energy transition, GMO believes that global demand for many natural resources will increase and, given the finite supply of natural resources, that prices of these natural resources will increase over a long time period. GMO also believes that the demand for clean energy will continue to increase. In managing the Fund, GMO seeks to invest the Fund&#x2019;s assets in the securities of companies that it believes will benefit from, and avoid companies it believes will be adversely affected by, the long-term increase GMO expects in natural resource prices and the increasing demand for clean energy. GMO expects the Fund&#x2019;s long-term performance to have a low correlation to the performance of equity markets generally.&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;margin-left:3.76%;"&gt;GMO selects the securities the Fund buys and sells based on its evaluation of companies&#x2019; published financial information and &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;corporate behavior (such as profit warnings, share issuance or repurchase, and director dealings in company stock), securities&#x2019; prices, commodities&#x2019; prices, equity and bond markets, the overall global economy, and governmental policies. GMO also may consider ESG (environmental, social, and governance) criteria.&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;margin-left:3.76%;"&gt;In selecting securities for the Fund, GMO uses a combination of investment methods to identify natural resources equities GMO &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;believes have positive return potential relative to other natural resources equities. Some of these methods evaluate individual companies or groups of companies based on the ratio of their security price to historical financial information and forecasted financial information, such as profitability, cash flow and earnings, and a comparison of these ratios to current and historical averages. Other methods focus on patterns of information, such as price movement or volatility of a security or groups of securities relative to other securities of companies in the natural resources sector. At times, the Fund may have substantial exposure to a single asset class, industry, sector, country, region, issuer, or currency and companies with similar market capitalizations. The Fund invests in companies tied economically to emerging markets. The Fund may invest its assets in securities of companies of any market capitalization and may invest a significant portion of its assets in securities of companies with smaller market capitalizations. The factors GMO considers and investment methods GMO uses can change over time. GMO does not manage the Fund to, or control the Fund&#x2019;s risk relative to, any securities index or securities benchmark.&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;margin-left:3.76%;"&gt;As an alternative to investing directly in equities, the Fund may invest in exchange-traded and over-the-counter (OTC) derivatives &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;and exchange-traded funds (ETFs). The Fund also may invest in derivatives and ETFs in an attempt to obtain or adjust elements of its long or short investment exposure. Derivatives used may include futures, options, forward currency contracts, and swap contracts. In addition, the Fund may lend its portfolio securities.&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;margin-left:3.76%;"&gt;The Fund has a fundamental policy to concentrate its investments in the natural resources sector, and under normal market &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;conditions, the Fund invests at least 80% of its assets in the securities of companies in that sector (see &#x201c;Name Policies&#x201d;). The Fund considers the &#x201c;natural resources sector&#x201d; to include companies that own, produce, refine, process, transport, and market natural resources and companies that provide related equipment, infrastructure, and services. The sector includes, for example, the following industries: integrated oil, oil and gas exploration and production, gold and other precious metals, steel and iron ore production, energy services and technology, base metal production, forest products, farming products, paper products, chemicals, building materials, coal, water, alternative energy sources, and environmental services. The Fund is permitted to invest directly and indirectly (e.g., through underlying funds or derivatives) in securities of companies tied economically to any country in the world, including emerging countries. &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;margin-left:3.76%;"&gt;The Fund also may invest in U.S. Treasury Fund, in money market funds unaffiliated with GMO, and directly in the types of &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;investments typically held by money market funds.&lt;/span&gt;</oef:StrategyNarrativeTextBlock>
    <oef:RiskTextBlock
      contextRef="S000034948_RiskLoseMoneyMember"
      id="e53e425c-a4d4-48c7-bd93-28b5ef7dcc94">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;Many factors can affect this value, and you may lose money by investing in the Fund.&lt;/span&gt;</oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="S000034948_RiskNotInsuredDepositoryInstitutionMember"
      id="d4b990e3-f986-4e09-9dcf-a28dd6681d8f">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;An investment in the Fund is not a bank deposit and is not insured or guaranteed by the FDIC or &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;any government agency.&lt;/span&gt;</oef:RiskTextBlock>
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      contextRef="S000034948_FocusedInvestmentRiskMember"
      id="x_85cb6cda-9ae7-4871-abfb-f85e48107975">&lt;span style="color:#000000;font-family:Times New Roman;font-size:8pt;"&gt;&#x25cf;&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-style:italic;"&gt;Focused Investment Risk&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; &#x2013; Because the Fund concentrates its investments in the natural resources sector, it is particularly exposed to adverse developments, including adverse price movements, affecting issuers in the natural resources sector and is subject to higher risks than a fund that invests in a wider range of industries. In addition, the market prices of securities of companies in the natural resources sector are often more volatile (particularly in the short term) than those of securities of companies in other industries. Some of the commodities used as raw materials or produced by these companies are subject to broad price fluctuations as a result of industry-wide supply and demand factors. Companies in the natural resources sector often have limited pricing power over the supplies they purchase and the products they sell, which can affect their profitability. Such companies are often capital-intensive and use significant amounts of leverage, subjecting them to the risk of rising interest rates that could adversely affect their ability to repay debt issued to finance capital projects and/or to borrow or otherwise raise additional money to finance those projects. Projects in the natural resources sector may take extended periods of time to complete, and companies cannot ensure that the market will be favorable at the time the project begins production. Companies in the natural resources sector also may be subject to special risks associated with natural or man-made disasters. In addition, companies in the natural resources sector can be especially affected by &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;margin-left:0.00%;"&gt;political and economic developments, government regulations including changes in tax law or interpretations of law, energy conservation, and the success of exploration projects. Specifically, companies in the natural resources sector can be significantly affected by import controls, worldwide competition and cartels, and changes in consumer sentiment and spending and can be subject to liability for, among other things, environmental damage, depletion of resources, and mandated expenditures for safety and pollution control. The Fund&#x2019;s concentration in the securities of natural resources companies exposes it to the price movements of natural resources to a greater extent than if it were more broadly diversified. Because the Fund invests primarily in the natural &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;resources sector, it runs the risk of performing poorly during an economic downturn or a decline in demand for natural resources.&lt;/span&gt;</oef:RiskTextBlock>
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      contextRef="S000034948_CommoditiesRiskMember"
      id="fa9f127a-ccbe-4d33-a2b3-51e806ed8f01">&lt;span style="color:#000000;font-family:Times New Roman;font-size:8pt;"&gt;&#x25cf;&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-style:italic;"&gt;Commodities Risk&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; &#x2013; Commodity prices can be extremely volatile, and exposure to commodities can cause the net asset value of the Fund&#x2019;s shares to decline or fluctuate significantly&#160;more than if the Fund had a broader range of investments.&lt;/span&gt;</oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="S000034948_MarketRiskEquitiesRiskMember"
      id="ca3818e0-9fbf-4ad3-ad5b-017cc8c6d097">&lt;span style="color:#000000;font-family:Times New Roman;font-size:8pt;"&gt;&#x25cf;&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-style:italic;"&gt;Market Risk &#x2013; Equities &#x2013; &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;The market price of an equity in the Fund&#x2019;s portfolio may decline due to factors affecting the issuer or its industry or the economy and equity markets generally. If the Fund purchases an equity for less than its fundamental fair (or intrinsic) value as assessed by GMO, the Fund runs the risk that the market price of the equity will not appreciate or will decline (for example, if GMO&#x2019;s assessment proves to be incorrect or the market fails to recognize the equity&#x2019;s intrinsic value). The Fund also may purchase equities that typically trade at higher multiples of current earnings than other securities, and the market prices of these equities often are more sensitive to changes in future earnings expectations and interest rates than the market prices of equities trading at lower multiples. Declines in stock market prices generally are likely to reduce the net asset value of the Fund&#x2019;s shares.&lt;/span&gt;</oef:RiskTextBlock>
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      contextRef="S000034948_ManagementandOperationalRiskMember"
      id="e16cc887-a3bb-4b0b-9ba0-bf630a42711f">&lt;span style="color:#000000;font-family:Times New Roman;font-size:8pt;"&gt;&#x25cf;&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-style:italic;"&gt;Management and Operational Risk&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; &#x2013; The Fund runs the risk that GMO&#x2019;s investment techniques will fail to produce intended results.&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;The Fund also runs the risk that GMO&#x2019;s assessment of an investment, including a security&#x2019;s fundamental fair (or intrinsic) value, is wrong or that deficiencies in GMO&#x2019;s or another service provider&#x2019;s internal systems or controls will cause losses for the Fund or impair Fund operations.&lt;/span&gt;</oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="S000034948_SmallerCompanyRiskMember"
      id="x_813b3b73-b669-413d-8671-cab935af2a18">&lt;span style="color:#000000;font-family:Times New Roman;font-size:8pt;"&gt;&#x25cf;&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-style:italic;"&gt;Smaller Company Risk&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; &#x2013; Smaller companies may have limited product lines, markets, or financial resources, lack the competitive strength of larger companies, have less experienced managers or depend on a few key employees. The securities of companies with smaller market capitalizations often are less widely held and trade less frequently and in lesser quantities, and their market prices often fluctuate more, than the securities of companies with larger market capitalizations.&lt;/span&gt;</oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="S000034948_NonUSInvestmentRiskMember"
      id="x_4c23a68a-816f-4bb9-b53f-17cc9a73e451">&lt;span style="color:#000000;font-family:Times New Roman;font-size:8pt;"&gt;&#x25cf;&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-style:italic;"&gt;Non-U.S. Investment Risk&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; &#x2013; The market prices of many non-U.S. securities fluctuate more than those of U.S. securities. Many non-U.S. securities markets are less stable, smaller, less liquid, and less regulated than U.S. securities markets, and the cost of trading in those markets often is higher than in U.S. securities markets. In addition, non-U.S. securities issuers often are not subject to as much regulation as U.S. issuers, and the reporting, recordkeeping, accounting, custody, and auditing standards to which those issuers are subject often are not as rigorous as U.S. standards. In addition, the Fund is subject to taxation by countries other than the United States, including potentially on a retroactive basis, on (i) capital gains it realizes or dividends, interest, or other amounts it realizes or accrues in respect of non-U.S. investments; (ii) transactions in those investments; and (iii) repatriation of proceeds generated from the sale or other disposition of those investments.&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; Also, the Fund needs a license to invest directly in securities &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;traded in many non-U.S. securities markets, and the Fund is subject to the risk that its license is terminated or suspended. In some non-U.S. securities markets, prevailing custody and trade settlement practices (e.g., the requirement to pay for securities prior to receipt) expose the Fund to credit and other risks. Further, adverse changes in investment regulations, capital requirements or exchange controls could adversely affect the value of the Fund&#x2019;s investments. The risks above (such as substantial price fluctuations and market instability, illiquidity and lack of regulation) and other risks (e.g., nationalization, expropriation or other confiscation of assets of non-U.S. issuers, difficulties enforcing legal judgments or contractual rights and geopolitical risks) tend to be higher for investments in the securities of issuers tied economically to emerging countries. The economies of emerging countries often depend predominantly on only a few industries or commodities and often are more volatile than the economies of developed countries.&lt;/span&gt;</oef:RiskTextBlock>
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      contextRef="S000034948_IlliquidityRiskMember"
      id="x_9b6d7352-2256-4212-b734-f98de181f91c">&lt;span style="color:#000000;font-family:Times New Roman;font-size:8pt;"&gt;&#x25cf;&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-style:italic;"&gt;Illiquidity Risk&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; &#x2013; Low trading volume, lack of a market maker, large position size, or legal restrictions increase the risk that the Fund or an underlying fund is limited or prevented from selling particular securities or closing derivative positions at desirable prices at a particular time or at all.&lt;/span&gt;</oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="S000034948_MarketDisruptionandGeopoliticalRiskMember"
      id="x_71aff407-76a1-48a9-a3c8-6144e81eca7b">&lt;span style="color:#000000;font-family:Times New Roman;font-size:8pt;"&gt;&#x25cf;&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-style:italic;"&gt;Market Disruption and Geopolitical Risk&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; &#x2013; Geopolitical and other events (e.g., wars, pandemics, sanctions, terrorism, diplomatic tensions, dramatic changes in regulatory and/or foreign policy, cyberattacks, and rapid technological developments such as artificial intelligence) often disrupt securities markets and adversely affect the general economy or particular economies and markets. Those events, as well as other changes in non-U.S. and U.S. economic and political conditions, could exacerbate other risks or otherwise reduce the value of the Fund&#x2019;s investments.&lt;/span&gt;</oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="S000034948_CurrencyRiskMember"
      id="b779fdfa-cce2-4dee-a608-c3e6d2314c75">&lt;span style="color:#000000;font-family:Times New Roman;font-size:8pt;"&gt;&#x25cf;&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-style:italic;"&gt;Currency Risk&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; &#x2013; Fluctuations in exchange rates can adversely affect the market value of the Fund&#x2019;s foreign currency holdings and investments denominated in foreign currencies.&lt;/span&gt;</oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="S000034948_DerivativesandShortSalesRiskMember"
      id="x_0df0dc10-2d20-461e-86f3-3a9b332c9622">&lt;span style="color:#000000;font-family:Times New Roman;font-size:8pt;"&gt;&#x25cf;&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-style:italic;"&gt;Derivatives and Short Sales Risk&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; &#x2013; The use of derivatives involves the risk that their value may not change as expected relative to changes in the value of the underlying assets, pools of assets, rates, currencies or indices. Derivatives also present other risks, including market risk, illiquidity risk, currency risk, credit risk, leveraging risk, commodities risk and counterparty risk. The market price of an option is affected by many factors, including changes in the market prices or dividend rates of underlying securities (or &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;margin-left:0.00%;"&gt;in the case of indices, the securities in such indices); the time remaining before expiration; changes in interest rates or exchange rates; and changes in the actual or perceived volatility of the relevant index or underlying securities. The Fund typically creates short investment exposure by selling securities short or by taking a derivative position in which the value of the derivative moves in the opposite direction from the price of an underlying asset, pool of assets, rate, currency or index. Specifically, the net asset value of the Fund&#x2019;s shares will be adversely affected if the securities or other assets that are the subject of the Fund&#x2019;s short exposures appreciate in value. The risk of loss associated with derivatives that provide short investment exposure and short sales of securities &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;is theoretically unlimited.&lt;/span&gt;</oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="S000034948_CounterpartyRiskMember"
      id="x_26e2ddf1-452f-4be9-9ea2-1152c3120344">&lt;span style="color:#000000;font-family:Times New Roman;font-size:8pt;"&gt;&#x25cf;&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-style:italic;"&gt;Counterparty Risk&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; &#x2013; The Fund runs the risk that the counterparty to a derivatives contract or a clearing member used by the Fund to hold a cleared derivatives contract is unable or unwilling to make timely settlement payments, return the Fund&#x2019;s collateral or otherwise honor its obligations.&lt;/span&gt;</oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="S000034948_LeveragingRiskMember"
      id="x_849a74fd-b65b-4d25-a93a-e13c1a83e3d4">&lt;span style="color:#000000;font-family:Times New Roman;font-size:8pt;"&gt;&#x25cf;&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-style:italic;"&gt;Leveraging Risk&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; &#x2013; The use of derivatives, short sales and securities lending can create leverage. Leverage increases the Fund&#x2019;s losses when the value of its investments (including derivatives) declines. In addition, the Fund&#x2019;s portfolio will be leveraged if it exercises its right to delay payment on a redemption and the value of the Fund&#x2019;s assets declines between the time a redemption request is treated as being received by the Fund and the time the Fund liquidates assets to fund that redemption.&lt;/span&gt;</oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="S000034948_LargeTransactionsRiskMember"
      id="x_48b2dd06-6a6a-45fb-af45-e7bfd57c73c9">&lt;span style="color:#000000;font-family:Times New Roman;font-size:8pt;"&gt;&#x25cf;&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-style:italic;"&gt;Large Transactions Risk&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; &#x2013; To the extent that a large number of shares of the Fund is held by a single shareholder (e.g., an institutional investor or another GMO Fund) or a group of shareholders with a common investment strategy (e.g., GMO asset allocation accounts), the Fund is subject to the risk that a redemption by (or caused by) that shareholder or group will require the Fund to sell investments at disadvantageous prices, disrupt the Fund&#x2019;s operations, lead to temporary overexposure to the Fund&#x2019;s intended investment program or force the Fund&#x2019;s liquidation. The Fund also may be subject to these effects when a number of shareholders collectively redeem or sell a large amount of Fund shares.&lt;/span&gt;</oef:RiskTextBlock>
    <oef:BarChartAndPerformanceTableHeading
      contextRef="S000034948"
      id="x_57167ce6-a8a4-4d7c-bb9b-a7e849ee13e1">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-weight:bold;"&gt;Performance&lt;/span&gt;</oef:BarChartAndPerformanceTableHeading>
    <oef:PerformanceNarrativeTextBlock
      contextRef="S000034948"
      id="c88722f8-c1e6-45bb-80b8-47ffabd03d43">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;margin-left:3.76%;"&gt;The bar chart and table below provide some indication of the risks of investing in the Fund by showing changes in the Fund&#x2019;s &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;annual total returns from year to year for the periods indicated and by comparing the Fund&#x2019;s average annual total returns for different calendar periods with those of the MSCI ACWI Commodity Producers Index and a broad-based securities market index intended solely to represent, in satisfaction of regulatory requirements, the overall global equity market.&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; Share classes not shown would have &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;substantially similar annual returns to those below because all share classes invest in the same portfolio of securities. Annual returns vary among share classes to the extent that they bear different expenses. Share classes that bear higher expenses than the share classes shown below would have lower returns. &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;After-tax returns are calculated using the historical highest individual federal marginal income &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;tax rates and do not reflect the impact of state and local taxes.&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; Actual after-tax returns depend on your tax situation and may differ from &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;those shown. After-tax returns shown are not relevant if you are tax-exempt or if you hold your Fund shares through tax-advantaged arrangements (such as a 401(k) plan or individual retirement account). &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;After-tax returns are shown for Class III shares only; after-tax &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;returns for other classes will vary. Updated performance information for the Fund is available at &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;www.gmo.com&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;.&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; Past performance &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;(before and after taxes) is not an indication of future performance.&lt;/span&gt;</oef:PerformanceNarrativeTextBlock>
    <oef:PerformanceInformationIllustratesVariabilityOfReturns
      contextRef="S000034948"
      id="x_22cf7ee2-f8ec-4aa2-a08f-9348de276b9c">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;margin-left:3.76%;"&gt;The bar chart and table below provide some indication of the risks of investing in the Fund by showing changes in the Fund&#x2019;s &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;annual total returns from year to year for the periods indicated and by comparing the Fund&#x2019;s average annual total returns for different calendar periods with those of the MSCI ACWI Commodity Producers Index and a broad-based securities market index intended solely to represent, in satisfaction of regulatory requirements, the overall global equity market.&lt;/span&gt;</oef:PerformanceInformationIllustratesVariabilityOfReturns>
    <oef:PerformanceTableUsesHighestFederalRate
      contextRef="S000034948"
      id="cf466ae1-2bbf-4b12-95db-cac7969693b6">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;After-tax returns are calculated using the historical highest individual federal marginal income &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;tax rates and do not reflect the impact of state and local taxes.&lt;/span&gt;</oef:PerformanceTableUsesHighestFederalRate>
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      id="f10ed83a-3d62-4101-9363-c2bb3d58a220">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; Actual after-tax returns depend on your tax situation and may differ from &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;those shown. After-tax returns shown are not relevant if you are tax-exempt or if you hold your Fund shares through tax-advantaged arrangements (such as a 401(k) plan or individual retirement account). &lt;/span&gt;</oef:PerformanceTableNotRelevantToTaxDeferred>
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      id="e0106166-be6c-4bd3-a240-b3b48a5927ff">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;After-tax returns are shown for Class III shares only; after-tax &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;returns for other classes will vary. Updated performance information for the Fund is available at &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;www.gmo.com&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;.&lt;/span&gt;</oef:PerformanceTableOneClassOfAfterTaxShown>
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      id="x_65083d1e-ce2d-4193-b1cd-6ea1a0ebccf8">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;www.gmo.com&lt;/span&gt;</oef:PerformanceAvailabilityWebSiteAddress>
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      id="d89ddf34-3f6f-4c3b-8723-660bb562e693">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; Past performance &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;(before and after taxes) is not an indication of future performance.&lt;/span&gt;</oef:PerformancePastDoesNotIndicateFuture>
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      id="x_43039ced-6b7e-495f-8f3f-2e50eb6cd7cc">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-weight:bold;"&gt;Annual Total Returns/Class III Shares&lt;/span&gt; &lt;br/&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;Years Ending December 31&lt;/span&gt;</oef:BarChartHeading>
    <oef:BarChartClosingTextBlock
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      id="x_23549335-99e4-4a07-b3eb-fcbd67a34c17">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;Highest Quarter:&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;38.17%&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;-sec-ix-hidden:x_220bb40e-7ab6-4826-a8da-c420d2ba716e"&gt;4Q 2020&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;Lowest Quarter:&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;-35.58%&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;-sec-ix-hidden:x_4d7ab873-0bd9-4a29-be02-f22f5fb8b6d1"&gt;1Q 2020&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;Year-to-Date:&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;-5.90%&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;As of&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;3/31/2025&lt;/span&gt;</oef:BarChartClosingTextBlock>
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      id="x_5ca48dba-870b-4e58-ba07-a576a8e45b88">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;Highest Quarter:&lt;/span&gt;</oef:HighestQuarterlyReturnLabel>
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      id="b46f0f12-ab99-44b5-9daf-c6c756ea431f"
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      id="x_0e389c0a-5075-4b25-b6ea-c83fd9566ae3">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;Lowest Quarter:&lt;/span&gt;</oef:LowestQuarterlyReturnLabel>
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      id="d06e223d-af3a-4c83-8673-8830c986d5bd"
      unitRef="pure">-0.3558</oef:BarChartLowestQuarterlyReturn>
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      id="x_14bd42be-320b-40f9-868d-d121305847a7">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;Year-to-Date:&lt;/span&gt;</oef:YearToDateReturnLabel>
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      id="x_167f0665-870e-4a6c-829a-976d61329a14"
      unitRef="pure">-0.0590</oef:BarChartYearToDateReturn>
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      contextRef="S000034948_C000107485"
      id="f72667a8-69b6-46ed-8727-3dcf3a438a46">2025-03-31</oef:BarChartYearToDateReturnDate>
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      id="x_064032cb-14d4-459a-8c61-3e51c5a61bc2">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-weight:bold;"&gt;Average Annual Total Returns&lt;/span&gt; &lt;br/&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;Periods Ending December 31, 2024&lt;/span&gt;</oef:PerformanceTableHeading>
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      id="x_3c5b13ae-39e2-4bb5-b97f-e3198e435183">2011-12-28</oef:PerfInceptionDate>
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      id="x_6e8761b0-7e0d-4b28-8e78-7b65b1714eb1"
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      id="x_21830561-c67d-40e9-8c99-6e530be37ba4">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-weight:bold;"&gt;Investment objective&lt;/span&gt;</oef:ObjectiveHeading>
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      id="f1a6d77c-6e0f-456e-a058-954501bb9a79"
      unitRef="pure">0.0089</oef:NetExpensesOverAssets>
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      decimals="4"
      id="ad5d0028-8725-4eee-94f8-9c8cf2441b74"
      unitRef="pure">0.0086</oef:NetExpensesOverAssets>
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      contextRef="S000079719_C000241003"
      decimals="4"
      id="fc555ee1-a158-4b6b-8186-3911a506c00a"
      unitRef="pure">0.0095</oef:NetExpensesOverAssets>
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      id="x_40da209e-9b55-4ff9-96a8-6a60d972fce3"
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    <oef:FeeWaiverOrReimbursementOverAssetsDateOfTermination
      contextRef="S000079719"
      id="x_433a951d-9283-4d97-a43a-427cbb96dce0">&lt;span style="color:#000000;font-family:Times New Roman;font-size:8pt;font-style:italic;"&gt;June 30, 2026&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:8pt;font-style:italic;"&gt;June 30, 2026&lt;/span&gt;</oef:FeeWaiverOrReimbursementOverAssetsDateOfTermination>
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      id="x_785fc29c-3a7e-4bc8-afd9-61851a7c7971">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-weight:bold;"&gt;Example&lt;/span&gt;</oef:ExpenseExampleHeading>
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      id="fefbaedc-b46c-47fa-be62-ffd2610f91d9">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;margin-left:3.76%;"&gt;This example is intended to help you compare the cost of investing in the Fund with the cost of investing in other funds. The &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;example assumes that you invest $10,000 in the Fund for the time periods indicated, regardless of whether or not you redeem your shares at the end of such periods. The example also assumes that your investment has a 5% return each year and that the Fund&#x2019;s operating expenses remain the same as those shown in the table. The one year amounts shown reflect the expense reimbursement and waiver noted in the expense table. Although your actual costs may be higher or lower, based on these assumptions your costs would be:&lt;/span&gt;</oef:ExpenseExampleNarrativeTextBlock>
    <oef:ExpenseExampleYear01
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      decimals="INF"
      id="x_2893192e-2ade-4a42-8ad9-ef17e2936287"
      unitRef="USD">97</oef:ExpenseExampleYear01>
    <oef:ExpenseExampleYear03
      contextRef="S000079719_C000241001"
      decimals="INF"
      id="x_964499a7-c672-42e2-9486-8cd2be789b92"
      unitRef="USD">337</oef:ExpenseExampleYear03>
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      contextRef="S000079719_C000241001"
      decimals="INF"
      id="x_099bac99-947b-40cb-9379-43474276c5c8"
      unitRef="USD">596</oef:ExpenseExampleYear05>
    <oef:ExpenseExampleYear10
      contextRef="S000079719_C000241001"
      decimals="INF"
      id="x_31c5c085-79f1-446b-bc52-bb171932efbd"
      unitRef="USD">1337</oef:ExpenseExampleYear10>
    <oef:ExpenseExampleYear01
      contextRef="S000079719_C000241002"
      decimals="INF"
      id="a49105f4-b1f3-428c-9594-9eafa9b1f171"
      unitRef="USD">92</oef:ExpenseExampleYear01>
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      contextRef="S000079719_C000241002"
      decimals="INF"
      id="d2b2e3d7-deb4-425c-9318-ff4825d18496"
      unitRef="USD">321</oef:ExpenseExampleYear03>
    <oef:ExpenseExampleYear05
      contextRef="S000079719_C000241002"
      decimals="INF"
      id="x_2cc20886-be17-46f3-baf0-0650faab4b5f"
      unitRef="USD">569</oef:ExpenseExampleYear05>
    <oef:ExpenseExampleYear10
      contextRef="S000079719_C000241002"
      decimals="INF"
      id="x_38b983dd-0a19-4daa-a595-dec4f296c3a6"
      unitRef="USD">1280</oef:ExpenseExampleYear10>
    <oef:ExpenseExampleYear01
      contextRef="S000079719_C000241004"
      decimals="INF"
      id="x_8fdbf27e-9774-4864-a92a-0a0111a178cf"
      unitRef="USD">91</oef:ExpenseExampleYear01>
    <oef:ExpenseExampleYear03
      contextRef="S000079719_C000241004"
      decimals="INF"
      id="x_5e4bdda6-a002-45de-b41b-0a81c0d3e6ab"
      unitRef="USD">318</oef:ExpenseExampleYear03>
    <oef:ExpenseExampleYear05
      contextRef="S000079719_C000241004"
      decimals="INF"
      id="x_18c49dbc-45a4-47b9-8cc0-bdb279402cb0"
      unitRef="USD">564</oef:ExpenseExampleYear05>
    <oef:ExpenseExampleYear10
      contextRef="S000079719_C000241004"
      decimals="INF"
      id="x_3d9fb661-0c0e-415a-8c35-b96d7a093f80"
      unitRef="USD">1268</oef:ExpenseExampleYear10>
    <oef:ExpenseExampleYear01
      contextRef="S000079719_C000241005"
      decimals="INF"
      id="x_6df98275-c0bd-46b7-9f0c-0208cbe30653"
      unitRef="USD">88</oef:ExpenseExampleYear01>
    <oef:ExpenseExampleYear03
      contextRef="S000079719_C000241005"
      decimals="INF"
      id="cc35b1c8-1bfb-43ba-98ba-7c910e69b0d0"
      unitRef="USD">309</oef:ExpenseExampleYear03>
    <oef:ExpenseExampleYear05
      contextRef="S000079719_C000241005"
      decimals="INF"
      id="x_7ecfcb09-bdbc-470a-a259-f0d50a1427ea"
      unitRef="USD">548</oef:ExpenseExampleYear05>
    <oef:ExpenseExampleYear10
      contextRef="S000079719_C000241005"
      decimals="INF"
      id="x_48ec1a93-fc69-4ca2-a696-852bfe55a2d0"
      unitRef="USD">1233</oef:ExpenseExampleYear10>
    <oef:ExpenseExampleYear01
      contextRef="S000079719_C000241003"
      decimals="INF"
      id="x_3bef05a0-305e-44d8-9a60-504f8f950f78"
      unitRef="USD">97</oef:ExpenseExampleYear01>
    <oef:ExpenseExampleYear03
      contextRef="S000079719_C000241003"
      decimals="INF"
      id="x_67dfd5b5-16c3-4a1e-9a08-d6bf4c73367f"
      unitRef="USD">337</oef:ExpenseExampleYear03>
    <oef:ExpenseExampleYear05
      contextRef="S000079719_C000241003"
      decimals="INF"
      id="x_4183b53d-18a8-4482-b2c1-a4d41897b768"
      unitRef="USD">596</oef:ExpenseExampleYear05>
    <oef:ExpenseExampleYear10
      contextRef="S000079719_C000241003"
      decimals="INF"
      id="x_83afba4b-c8e8-4fa6-a035-1d440af2fa21"
      unitRef="USD">1337</oef:ExpenseExampleYear10>
    <oef:ExpenseExampleYear01
      contextRef="S000079719_C000241006"
      decimals="INF"
      id="ba56b816-00d6-4b99-8cff-8664129569df"
      unitRef="USD">109</oef:ExpenseExampleYear01>
    <oef:ExpenseExampleYear03
      contextRef="S000079719_C000241006"
      decimals="INF"
      id="cfded51f-a62c-4004-8e91-eae89467f636"
      unitRef="USD">374</oef:ExpenseExampleYear03>
    <oef:ExpenseExampleYear05
      contextRef="S000079719_C000241006"
      decimals="INF"
      id="x_4772a53f-c449-4ef9-9b6b-6340ff2f6dd4"
      unitRef="USD">660</oef:ExpenseExampleYear05>
    <oef:ExpenseExampleYear10
      contextRef="S000079719_C000241006"
      decimals="INF"
      id="x_53703d41-be72-4517-9c18-ae6e4d8eb457"
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    <oef:PortfolioTurnoverHeading
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      id="x_3569c1c8-c689-4966-a297-1ab71be52351">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-weight:bold;"&gt;Portfolio turnover&lt;/span&gt;</oef:PortfolioTurnoverHeading>
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      id="x_93900e4d-d527-4f5e-a9aa-ad12f422ed07">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;margin-left:3.76%;"&gt;The Fund pays transaction costs, such as commissions, when it buys and sells securities. A higher portfolio turnover rate may &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;result in higher transaction costs and, for holders of Fund shares subject to U.S. taxes, higher income taxes. These transaction costs, which are not reflected in Annual Fund operating expenses or in the Example, affect the Fund&#x2019;s performance.&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; During its fiscal year &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;ended February 28, 2025, the Fund&#x2019;s portfolio turnover rate (excluding short-term investments) was &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;58&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;% of the average value of its portfolio securities.&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; That portfolio turnover rate includes investments in U.S. Treasury Fund, which the Fund uses as a short-term &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;investment vehicle for cash management. The Fund&#x2019;s portfolio turnover rate during its fiscal year ended February 28, 2025, excluding transactions in U.S. Treasury Fund and other short-term investments, was 47% of the average value of its portfolio securities.&lt;/span&gt;</oef:PortfolioTurnoverTextBlock>
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      id="x_089e5825-f45f-4515-8a09-f9fbc80c635f"
      unitRef="pure">0.58</oef:PortfolioTurnoverRate>
    <oef:StrategyHeading
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      id="x_6a9ad993-54bc-42e1-a83f-d75338ce0196">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-weight:bold;"&gt;Principal investment strategies&lt;/span&gt;</oef:StrategyHeading>
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      id="x_9ff131f6-f397-471e-a018-97a0f5abcb5e">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;margin-left:3.76%;"&gt;GMO seeks to achieve the Fund&#x2019;s investment objective by investing the Fund&#x2019;s assets primarily in equities of companies in the &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;resource transition sector (as defined below). Given global population growth, the industrialization of emerging countries, and the clean energy transition, GMO believes that global demand for many natural resources will increase and, given the finite supply of natural resources, that prices of these natural resources will increase over a long time period. GMO also believes that the demand for clean energy will continue to increase. In managing the Fund, GMO seeks to invest the Fund&#x2019;s assets in the securities of companies that it believes will benefit from and avoid companies it believes will be adversely affected by, the long-term increase GMO expects in natural resource prices and the increasing demand for clean energy. GMO expects the Fund&#x2019;s long-term performance to have a low correlation to the performance of equity markets generally.&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;margin-left:3.76%;"&gt;GMO selects the securities the Fund buys and sells based on its evaluation of companies&#x2019; published financial information and &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;corporate behavior (such as profit warnings, share issuance or repurchase, and director dealings in company stock), securities&#x2019; prices, commodities&#x2019; prices, equity and bond markets, the overall global economy, and governmental policies. GMO also may consider ESG (environmental, social, and governance) criteria.&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;margin-left:3.76%;"&gt;In selecting securities for the Fund, GMO uses a combination of investment methods to identify resource transition equities GMO &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;believes have positive return potential relative to the securities of other resource transition equities. Some of these methods evaluate individual companies or groups of companies based on the ratio of their security price to historical financial information and forecasted financial information, such as profitability, cash flow and earnings, and a comparison of these ratios to current and historical averages. Other methods focus on patterns of information, such as price movement or volatility of a security or groups of securities relative to other securities of companies in the resource transition sector. At times, the Fund may have substantial exposure to a single asset class, industry, sector, country, region, issuer, or currency and companies with similar market capitalizations. The Fund invests in companies tied economically to emerging markets. The Fund may invest its assets in securities of companies of any market capitalization and may invest a significant portion of its assets in securities of companies with smaller market capitalizations. The factors GMO considers and investment methods GMO uses can change over time. GMO does not manage the Fund to, or control the Fund&#x2019;s risk relative to, any securities index or securities benchmark.&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;margin-left:3.76%;"&gt;As an alternative to investing directly in equities, the Fund may invest in exchange-traded and over-the-counter (OTC) derivatives &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;and exchange-traded funds (ETFs). The Fund also may invest in derivatives and ETFs in an attempt to obtain or adjust elements of its long or short investment exposure. Derivatives used may include futures, options, forward currency contracts, and swap contracts. In addition, the Fund may lend its portfolio securities.&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;margin-left:3.76%;"&gt;The Fund has a fundamental policy to concentrate its investments in the resource transition sector, and under normal market &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;conditions, the Fund invests at least 80% of its assets in the securities of companies in that sector (see &#x201c;Name Policies&#x201d;). The Fund considers the &#x201c;resource transition sector&#x201d; to include companies that own, produce, refine, process, transport, and market natural resources other than fossil fuels and companies that provide related equipment, infrastructure, and services. The sector includes, for example companies in the following industries: diversified mining, precious metals, steel and iron ore production, energy services and technology, base metal production, forest products, farming products, paper products, chemicals, building materials, water, alternative energy sources, and environmental services. The Fund does not consider the integrated oil and gas or oil and gas exploration and production industries to be part of the &#x201c;resource transition sector&#x201d;. The Fund is permitted to invest directly and indirectly (e.g., through underlying funds or derivatives) in securities of companies tied economically to any country in the world, including emerging countries. &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;margin-left:3.76%;"&gt;The Fund also may invest in U.S. Treasury Fund, in money market funds unaffiliated with GMO, and directly in the types of &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;investments typically held by money market funds.&lt;/span&gt;</oef:StrategyNarrativeTextBlock>
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      id="x_3083a643-7945-477c-8fa9-ed0b5cd8b6bb">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;Many factors can affect this value, and you may lose money by investing in the Fund.&lt;/span&gt;</oef:RiskTextBlock>
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      contextRef="S000079719_RiskNotInsuredDepositoryInstitutionMember"
      id="x_59ece02f-764f-457c-b21d-afc552862f04">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;An investment in the Fund is not a bank deposit and is not insured or guaranteed by the FDIC or &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;any government agency.&lt;/span&gt;</oef:RiskTextBlock>
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      contextRef="S000079719_FocusedInvestmentRiskMember"
      id="x_30fd94ff-17b9-47d4-9c7c-1409c89e6d34">&lt;span style="color:#000000;font-family:Times New Roman;font-size:8pt;"&gt;&#x25cf;&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-style:italic;"&gt;Focused Investment Risk&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; &#x2013; Because the Fund concentrates its investments in the resource transition sector, it is particularly exposed to adverse developments, including adverse price movements, affecting issuers in the resource transition sector and is subject to higher risks than a fund that invests in a wider range of industries. In addition, the market prices of securities of companies in the resource transition sector are often more volatile (particularly in the short term) than those of securities of companies in other industries. Some of the commodities used as raw materials or produced by these companies are subject to broad price fluctuations as a result of industry-wide supply and demand factors. Companies in the resource transition sector often have limited pricing power over the supplies they purchase and the products they sell, which can affect their profitability. Such companies are often capital-intensive and use significant amounts of leverage, subjecting them to the risk of rising interest rates that could adversely affect their &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;margin-left:0.00%;"&gt;ability to repay debt issued to finance capital projects and/or to borrow or otherwise raise additional money to finance those projects. Projects in the resource transition sector may take extended periods of time to complete, and companies cannot ensure that the market will be favorable at the time the project begins production. Companies in the resource transition sector also may be subject to special risks associated with natural or man-made disasters. In addition, companies in the resource transition sector can be especially affected by political and economic developments, government regulations including changes in tax law or interpretations of law, energy conservation, and the success of exploration projects. Specifically, companies in the resource transition sector can be significantly affected by import controls, worldwide competition and cartels, and changes in consumer sentiment and spending and can be subject to liability for, among other things, environmental damage, depletion of resources, and mandated expenditures for safety and pollution control. The Fund&#x2019;s concentration in the securities of companies in the resource transition sector exposes it to the price movements of natural resources to a greater extent than if it were more broadly diversified. For example, the Fund&#x2019;s lack of exposure to companies that own fossil fuel reserves or that focus on oil and gas exploration and production may have an adverse effect on Fund performance relative to a fund that invested more broadly across the natural resources sector. Because the Fund invests primarily in the resource transition sector, it runs the risk of performing poorly during an economic downturn or a decline in &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;demand for natural resources.&lt;/span&gt;</oef:RiskTextBlock>
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      contextRef="S000079719_CommoditiesRiskMember"
      id="x_33495baa-1622-4257-af64-a4d634f749f7">&lt;span style="color:#000000;font-family:Times New Roman;font-size:8pt;"&gt;&#x25cf;&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-style:italic;"&gt;Commodities Risk&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; &#x2013; Commodity prices can be extremely volatile, and exposure to commodities can cause the net asset value of the Fund&#x2019;s shares to decline or fluctuate significantly&#160;more than if the Fund had a broader range of investments.&lt;/span&gt;</oef:RiskTextBlock>
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      contextRef="S000079719_MarketRiskEquitiesRiskMember"
      id="x_1a401c44-966d-4c0c-b136-489a146a02ba">&lt;span style="color:#000000;font-family:Times New Roman;font-size:8pt;"&gt;&#x25cf;&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-style:italic;"&gt;Market Risk &#x2013; Equities &#x2013; &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;The market price of an equity in the Fund&#x2019;s portfolio may decline due to factors affecting the issuer or its industry or the economy and equity markets generally. If the Fund purchases an equity for less than its fundamental fair (or intrinsic) value as assessed by GMO, the Fund runs the risk that the market price of the equity will not appreciate or will decline (for example, if GMO&#x2019;s assessment proves to be incorrect or the market fails to recognize the equity&#x2019;s intrinsic value). The Fund also may purchase equities that typically trade at higher multiples of current earnings than other securities, and the market prices of these equities often are more sensitive to changes in future earnings expectations and interest rates than the market prices of equities trading at lower multiples. Declines in stock market prices generally are likely to reduce the net asset value of the Fund&#x2019;s shares.&lt;/span&gt;</oef:RiskTextBlock>
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      contextRef="S000079719_ManagementandOperationalRiskMember"
      id="a487c3bd-9a6d-4caf-a864-983674a32e2d">&lt;span style="color:#000000;font-family:Times New Roman;font-size:8pt;"&gt;&#x25cf;&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-style:italic;"&gt;Management and Operational Risk&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; &#x2013; The Fund runs the risk that GMO&#x2019;s investment techniques will fail to produce intended results.&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;The Fund also runs the risk that GMO&#x2019;s assessment of an investment, including a security&#x2019;s fundamental fair (or intrinsic) value, is wrong or that deficiencies in GMO&#x2019;s or another service provider&#x2019;s internal systems or controls will cause losses for the Fund or impair Fund operations.&lt;/span&gt;</oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="S000079719_SmallerCompanyRiskMember"
      id="x_06285477-2511-4e4f-93cc-f5975273b0ad">&lt;span style="color:#000000;font-family:Times New Roman;font-size:8pt;"&gt;&#x25cf;&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-style:italic;"&gt;Smaller Company Risk&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; &#x2013; Smaller companies may have limited product lines, markets, or financial resources, lack the competitive strength of larger companies, have less experienced managers or depend on a few key employees. The securities of companies with smaller market capitalizations often are less widely held and trade less frequently and in lesser quantities, and their market prices often fluctuate more, than the securities of companies with larger market capitalizations.&lt;/span&gt;</oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="S000079719_NonUSInvestmentRiskMember"
      id="x_794e4cc1-aad0-4a23-a5b6-6454853302c3">&lt;span style="color:#000000;font-family:Times New Roman;font-size:8pt;"&gt;&#x25cf;&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-style:italic;"&gt;Non-U.S. Investment Risk&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; &#x2013; The market prices of many non-U.S. securities fluctuate more than those of U.S. securities. Many non-U.S. securities markets are less stable, smaller, less liquid, and less regulated than U.S. securities markets, and the cost of trading in those markets often is higher than in U.S. securities markets. In addition, non-U.S. securities issuers often are not subject to as much regulation as U.S. issuers, and the reporting, recordkeeping, accounting, custody, and auditing standards to which those issuers are subject often are not as rigorous as U.S. standards. In addition, the Fund is subject to taxation by countries other than the United States, including potentially on a retroactive basis, on (i) capital gains it realizes or dividends, interest, or other amounts it realizes or accrues in respect of non-U.S. investments; (ii) transactions in those investments; and (iii) repatriation of proceeds generated from the sale or other disposition of those investments.&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; Also, the Fund needs a license to invest directly in securities &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;traded in many non-U.S. securities markets, and the Fund is subject to the risk that its license is terminated or suspended. In some non-U.S. securities markets, prevailing custody and trade settlement practices (e.g., the requirement to pay for securities prior to receipt) expose the Fund to credit and other risks. Further, adverse changes in investment regulations, capital requirements or exchange controls could adversely affect the value of the Fund&#x2019;s investments. The risks above (such as substantial price fluctuations and market instability, illiquidity and lack of regulation) and other risks (e.g., nationalization, expropriation or other confiscation of assets of non-U.S. issuers, difficulties enforcing legal judgments or contractual rights and geopolitical risks) tend to be higher for investments in the securities of issuers tied economically to emerging countries. The economies of emerging countries often depend predominantly on only a few industries or commodities and often are more volatile than the economies of developed countries.&lt;/span&gt;</oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="S000079719_IlliquidityRiskMember"
      id="x_0335fe18-fccb-4616-96c8-4a2580eebc39">&lt;span style="color:#000000;font-family:Times New Roman;font-size:8pt;"&gt;&#x25cf;&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-style:italic;"&gt;Illiquidity Risk&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; &#x2013; Low trading volume, lack of a market maker, large position size, or legal restrictions increase the risk that the Fund or an underlying fund is limited or prevented from selling particular securities or closing derivative positions at desirable prices at a particular time or at all.&lt;/span&gt;</oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="S000079719_MarketDisruptionandGeopoliticalRiskMember"
      id="x_04b39fd9-72aa-4ac8-8a59-83b8b7dc488b">&lt;span style="color:#000000;font-family:Times New Roman;font-size:8pt;"&gt;&#x25cf;&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-style:italic;"&gt;Market Disruption and Geopolitical Risk&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; &#x2013; Geopolitical and other events (e.g., wars, pandemics, sanctions, terrorism, diplomatic tensions, dramatic changes in regulatory and/or foreign policy, cyberattacks, and rapid technological developments such as artificial intelligence) often disrupt securities markets and adversely affect the general economy or particular economies and markets. Those events, as well as other changes in non-U.S. and U.S. economic and political conditions, could exacerbate other risks or otherwise reduce the value of the Fund&#x2019;s investments.&lt;/span&gt;</oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="S000079719_CurrencyRiskMember"
      id="fda0ef04-ae94-4ff5-b63e-2e2b8f38f0e4">&lt;span style="color:#000000;font-family:Times New Roman;font-size:8pt;"&gt;&#x25cf;&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-style:italic;"&gt;Currency Risk&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; &#x2013; Fluctuations in exchange rates can adversely affect the market value of the Fund&#x2019;s foreign currency holdings and investments denominated in foreign currencies.&lt;/span&gt;</oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="S000079719_DerivativesandShortSalesRiskMember"
      id="a2f85bd5-158a-4c69-8a69-33c778118093">&lt;span style="color:#000000;font-family:Times New Roman;font-size:8pt;"&gt;&#x25cf;&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-style:italic;"&gt;Derivatives and Short Sales Risk&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; &#x2013; The use of derivatives involves the risk that their value may not change as expected relative to changes in the value of the underlying assets, pools of assets, rates, currencies or indices. Derivatives also present other risks, including market risk, illiquidity risk, currency risk, credit risk, leveraging risk, commodities risk and counterparty risk. The market price of an option is affected by many factors, including changes in the market prices or dividend rates of underlying securities (or in the case of indices, the securities in such indices); the time remaining before expiration; changes in interest rates or exchange rates; and changes in the actual or perceived volatility of the relevant index or underlying securities. The Fund typically creates short investment exposure by selling securities short or by taking a derivative position in which the value of the derivative moves in the opposite direction from the price of an underlying asset, pool of assets, rate, currency or index. Specifically, the net asset value of the Fund&#x2019;s shares will be adversely affected if the securities or other assets that are the subject of the Fund&#x2019;s short exposures appreciate in value. The risk of loss associated with derivatives that provide short investment exposure and short sales of securities is theoretically unlimited.&lt;/span&gt;</oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="S000079719_CounterpartyRiskMember"
      id="x_5bb73022-8b30-4511-838d-a8764350008c">&lt;span style="color:#000000;font-family:Times New Roman;font-size:8pt;"&gt;&#x25cf;&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-style:italic;"&gt;Counterparty Risk&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; &#x2013; The Fund runs the risk that the counterparty to a derivatives contract or a clearing member used by the Fund to hold a cleared derivatives contract is unable or unwilling to make timely settlement payments, return the Fund&#x2019;s collateral or otherwise honor its obligations.&lt;/span&gt;</oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="S000079719_LeveragingRiskMember"
      id="a83acdcf-e763-4e7b-bc39-5d2e1645f9a5">&lt;span style="color:#000000;font-family:Times New Roman;font-size:8pt;"&gt;&#x25cf;&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-style:italic;"&gt;Leveraging Risk&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; &#x2013; The use of derivatives, short sales and securities lending can create leverage. Leverage increases the Fund&#x2019;s losses when the value of its investments (including derivatives) declines. In addition, the Fund&#x2019;s portfolio will be leveraged if it exercises its right to delay payment on a redemption and the value of the Fund&#x2019;s assets declines between the time a redemption request is treated as being received by the Fund and the time the Fund liquidates assets to fund that redemption.&lt;/span&gt;</oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="S000079719_LargeTransactionsRiskMember"
      id="x_061af3a6-55a2-49ee-820c-85dd9be429c3">&lt;span style="color:#000000;font-family:Times New Roman;font-size:8pt;"&gt;&#x25cf;&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-style:italic;"&gt;Large Transactions Risk&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; &#x2013; To the extent that a large number of shares of the Fund is held by a single shareholder (e.g., an institutional investor or another GMO Fund) or a group of shareholders with a common investment strategy (e.g., GMO asset allocation accounts), the Fund is subject to the risk that a redemption by (or caused by) that shareholder or group will require the Fund to sell investments at disadvantageous prices, disrupt the Fund&#x2019;s operations, lead to temporary overexposure to the Fund&#x2019;s intended investment program or force the Fund&#x2019;s liquidation. The Fund also may be subject to these effects when a number of shareholders collectively redeem or sell a large amount of Fund shares.&lt;/span&gt;</oef:RiskTextBlock>
    <oef:BarChartAndPerformanceTableHeading
      contextRef="S000079719"
      id="x_4e0acc48-6472-4615-9f84-cc64f807b74c">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-weight:bold;"&gt;Performance&lt;/span&gt;</oef:BarChartAndPerformanceTableHeading>
    <oef:PerformanceNarrativeTextBlock
      contextRef="S000079719"
      id="x_2d9ee48f-a48f-4c2b-a970-befd9c6cf5ed">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;margin-left:3.76%;"&gt;The bar chart and table below provide some indication of the risks of investing in the Fund by showing changes in the Fund&#x2019;s &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;annual total returns from year to year for the periods indicated and by comparing the Fund&#x2019;s average annual total returns for different calendar periods with those of the MSCI ACWI Commodity Producers ex-Energy Index and a broad-based securities market index.&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;Share classes not shown would have substantially similar annual returns to those below because all share classes invest in the same portfolio of securities. Annual returns vary among share classes to the extent that they bear different expenses. Share classes that bear higher expenses than the share classes shown below would have lower returns. &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;After-tax returns are calculated using the historical &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;highest individual federal marginal income tax rates and do not reflect the impact of state and local taxes.&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; Actual after-tax returns &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;depend on your tax situation and may differ from those shown. After-tax returns shown are not relevant if you are tax-exempt or if you hold your Fund shares through tax-advantaged arrangements (such as a 401(k) plan or individual retirement account). &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;After-tax returns &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;are shown for Class VI shares only; after-tax returns for other classes will vary.&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; Updated performance information for the Fund is &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;available at &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;www.gmo.com&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;. &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;Past performance (before and after taxes) is not an indication of future performance.&lt;/span&gt;</oef:PerformanceNarrativeTextBlock>
    <oef:PerformanceInformationIllustratesVariabilityOfReturns
      contextRef="S000079719"
      id="x_194c309c-6d22-47c1-a20f-0c6ab1d44806">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;margin-left:3.76%;"&gt;The bar chart and table below provide some indication of the risks of investing in the Fund by showing changes in the Fund&#x2019;s &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;annual total returns from year to year for the periods indicated and by comparing the Fund&#x2019;s average annual total returns for different calendar periods with those of the MSCI ACWI Commodity Producers ex-Energy Index and a broad-based securities market index.&lt;/span&gt;</oef:PerformanceInformationIllustratesVariabilityOfReturns>
    <oef:PerformanceTableUsesHighestFederalRate
      contextRef="S000079719"
      id="x_8e5b09b5-b91b-4161-9ba3-1bde8716a7af">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;After-tax returns are calculated using the historical &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;highest individual federal marginal income tax rates and do not reflect the impact of state and local taxes.&lt;/span&gt;</oef:PerformanceTableUsesHighestFederalRate>
    <oef:PerformanceTableNotRelevantToTaxDeferred
      contextRef="S000079719"
      id="x_561eaf63-dae7-4710-9898-4f52035e89a4">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; Actual after-tax returns &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;depend on your tax situation and may differ from those shown. After-tax returns shown are not relevant if you are tax-exempt or if you hold your Fund shares through tax-advantaged arrangements (such as a 401(k) plan or individual retirement account). &lt;/span&gt;</oef:PerformanceTableNotRelevantToTaxDeferred>
    <oef:PerformanceTableOneClassOfAfterTaxShown
      contextRef="S000079719"
      id="x_8f786e48-77d9-4bff-b653-f4aee6783869">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;After-tax returns &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;are shown for Class VI shares only; after-tax returns for other classes will vary.&lt;/span&gt;</oef:PerformanceTableOneClassOfAfterTaxShown>
    <oef:PerformanceAvailabilityWebSiteAddress
      contextRef="S000079719"
      id="ff2806eb-d8a8-4a29-9049-6c882a632814">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;www.gmo.com&lt;/span&gt;</oef:PerformanceAvailabilityWebSiteAddress>
    <oef:PerformancePastDoesNotIndicateFuture
      contextRef="S000079719"
      id="x_7599ca80-c7ad-4334-95bf-00447458d00d">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;Past performance (before and after taxes) is not an indication of future performance.&lt;/span&gt;</oef:PerformancePastDoesNotIndicateFuture>
    <oef:BarChartHeading
      contextRef="S000079719"
      id="e9796fc9-ea81-4597-8304-66d94d6a8fc3">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-weight:bold;"&gt;Annual Total Returns/Class VI Shares&lt;/span&gt; &lt;br/&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;Years Ending December 31&lt;/span&gt;</oef:BarChartHeading>
    <oef:BarChartClosingTextBlock
      contextRef="S000079719"
      id="a0cce3dd-6f97-450d-8c98-45361ea89985">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;Highest Quarter:&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;6.83%&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;-sec-ix-hidden:ec199b22-0c3a-4c97-8c27-c4d6b19fd28b"&gt;3Q 2024&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;Lowest Quarter:&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;-18.67%&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;-sec-ix-hidden:add07c0b-2742-4336-bf81-020cea3c6848"&gt;4Q 2024&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;Year-to-Date:&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;-8.11%&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;As of&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;3/31/2025&lt;/span&gt;</oef:BarChartClosingTextBlock>
    <oef:HighestQuarterlyReturnLabel
      contextRef="S000079719_C000241005"
      id="a365e4e7-8682-4caa-b9cd-92bd8af829c9">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;Highest Quarter:&lt;/span&gt;</oef:HighestQuarterlyReturnLabel>
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      contextRef="S000079719_C000241005"
      decimals="4"
      id="fda866e4-2b51-49e2-bb80-160b1ff92dc7"
      unitRef="pure">0.0683</oef:BarChartHighestQuarterlyReturn>
    <oef:LowestQuarterlyReturnLabel
      contextRef="S000079719_C000241005"
      id="x_135b2162-5a6e-4b04-90f9-a0f7645938a8">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;Lowest Quarter:&lt;/span&gt;</oef:LowestQuarterlyReturnLabel>
    <oef:BarChartLowestQuarterlyReturn
      contextRef="S000079719_C000241005"
      decimals="4"
      id="x_66940e66-b94d-4513-83e2-121ef9406740"
      unitRef="pure">-0.1867</oef:BarChartLowestQuarterlyReturn>
    <oef:YearToDateReturnLabel
      contextRef="S000079719_C000241005"
      id="b08ef06a-c311-4f28-a5a7-026415cd6108">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;Year-to-Date:&lt;/span&gt;</oef:YearToDateReturnLabel>
    <oef:BarChartYearToDateReturn
      contextRef="S000079719_C000241005"
      decimals="4"
      id="x_878782eb-ca20-4d14-9856-4e5b2baf639b"
      unitRef="pure">-0.0811</oef:BarChartYearToDateReturn>
    <oef:BarChartYearToDateReturnDate
      contextRef="S000079719_C000241005"
      id="ac71de45-ece1-4c41-aa16-6e9517da1a1b">2025-03-31</oef:BarChartYearToDateReturnDate>
    <oef:PerformanceTableHeading
      contextRef="S000079719"
      id="x_95f11ab2-d028-4638-b54b-7e6f83321b38">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-weight:bold;"&gt;Average Annual Total Returns&lt;/span&gt; &lt;br/&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;Periods Ending December 31, 2024&lt;/span&gt;</oef:PerformanceTableHeading>
    <oef:PerfInceptionDate
      contextRef="C000241005"
      id="d9edbfc9-38e1-4d8a-bae5-b2a930763ba4">2023-02-15</oef:PerfInceptionDate>
    <oef:AvgAnnlRtrPct
      contextRef="C000241005_01Jan2024_31Dec2024"
      decimals="4"
      id="x_91dae3f4-4d81-4b61-8a38-e3522a579554"
      unitRef="pure">-0.2624</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000241005_15Feb2023_31Dec2024"
      decimals="4"
      id="e5984db3-3d5a-4c36-b527-41e48df123ab"
      unitRef="pure">-0.2308</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000241005_AfterTaxesOnDistributionsMember_01Jan2024_31Dec2024"
      decimals="4"
      id="x_390aab23-d17f-4135-adf4-73bb72f0089a"
      unitRef="pure">-0.2683</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000241005_AfterTaxesOnDistributionsMember_15Feb2023_31Dec2024"
      decimals="4"
      id="x_39bc6254-7c99-440b-9877-88ca5c01859d"
      unitRef="pure">-0.2391</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000241005_AfterTaxesOnDistributionsAndSalesMember_01Jan2024_31Dec2024"
      decimals="4"
      id="x_20a621a4-a907-46d1-930f-5feeae59a2d2"
      unitRef="pure">-0.1535</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000241005_AfterTaxesOnDistributionsAndSalesMember_15Feb2023_31Dec2024"
      decimals="4"
      id="a6bc5045-17e5-4673-ae70-673c7acec8df"
      unitRef="pure">-0.1706</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="_MSCIACWICommodityProducersIndexMember_01Jan2024_31Dec2024"
      decimals="4"
      id="x_9dd0d597-fe15-42aa-9e0d-8d3765f21525"
      unitRef="pure">-0.1277</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="_MSCIACWICommodityProducersIndexMember_15Feb2023_31Dec2024"
      decimals="4"
      id="x_96c75f79-4839-4184-ab24-be3b9aaaf298"
      unitRef="pure">-0.0732</oef:AvgAnnlRtrPct>
    <oef:IndexNoDeductionForFeesExpensesTaxes
      contextRef="S000079719"
      id="f96ef718-a962-4ad4-99ad-6304c02bb4c4">&lt;span style="color:#000000;font-family:Times New Roman;font-size:7.9pt;margin-left:0.0pt;"&gt;(returns reflect no &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:7.9pt;margin-left:7.9pt;"&gt;deduction for fees or expenses, &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:7.9pt;margin-left:7.9pt;"&gt;but are net of withholding tax on &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:7.9pt;margin-left:7.9pt;"&gt;dividend reinvestments)&lt;/span&gt;</oef:IndexNoDeductionForFeesExpensesTaxes>
    <oef:AvgAnnlRtrPct
      contextRef="_MSCIACWIMember_01Jan2024_31Dec2024"
      decimals="4"
      id="x_4010731a-f08a-4840-a963-ad50b60f009c"
      unitRef="pure">0.1749</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="_MSCIACWIMember_15Feb2023_31Dec2024"
      decimals="4"
      id="x_46cdcad2-f36a-4366-a8a5-bff641a220c2"
      unitRef="pure">0.1642</oef:AvgAnnlRtrPct>
    <oef:ObjectiveHeading
      contextRef="S000077554"
      id="x_3aa3c978-30cd-4cfe-ae3d-b2192be2f936">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-weight:bold;"&gt;Investment objective&lt;/span&gt;</oef:ObjectiveHeading>
    <oef:ObjectivePrimaryTextBlock
      contextRef="S000077554"
      id="x_95bcbabe-c6fa-4d21-86ef-471403b0e6b5">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;Total return.&lt;/span&gt;</oef:ObjectivePrimaryTextBlock>
    <oef:ExpenseHeading
      contextRef="S000077554"
      id="x_5607f43e-0cbf-478a-bbcf-83514383fb72">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-weight:bold;"&gt;Fees and expenses&lt;/span&gt;</oef:ExpenseHeading>
    <oef:ExpenseNarrativeTextBlock
      contextRef="S000077554"
      id="x_6d4a7c4f-1498-49e0-a490-7d9c474e3eb9">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;margin-left:3.76%;"&gt;The table below describes the fees and expenses that you may bear for each class of shares if you buy, hold, and sell shares of the &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;Fund. You may pay other fees, such as brokerage commissions and other fees to financial intermediaries, which are not reflected in the table and example below.&lt;/span&gt;</oef:ExpenseNarrativeTextBlock>
    <oef:OperatingExpensesCaption
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      id="b0166134-99df-45a5-abb8-2aec8637240c">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-weight:bold;"&gt;Annual Fund operating expenses&lt;/span&gt; &lt;br/&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;(expenses that you bear each year as a percentage of the value of your investment)&lt;/span&gt;</oef:OperatingExpensesCaption>
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      id="x_2ebc6151-c655-4b55-81cd-3e2414ee050d"
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      id="x_6e260660-79f4-4ffd-87bb-b22886f50c02"
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      id="x_0fec8e1a-3a70-4f9b-8c33-4c249600aab6"
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      id="x_2ba253d3-5f54-4aa6-8fb3-90475357ee44"
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      id="ca1fcab0-40a3-485f-aa75-d913e4847ceb"
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    <oef:FeeWaiverOrReimbursementOverAssets
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      id="b239250e-4664-46b2-bbc2-4e2fc7f67760"
      unitRef="pure">-0.0008</oef:FeeWaiverOrReimbursementOverAssets>
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      id="c12f4978-9c27-4e57-bfb8-7e2c809b535b"
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      id="d8e0d106-2335-49e2-bdb6-b2d6b81c6a39"
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      id="f15625d3-47da-4e41-9cbe-18a0bab7efad"
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      id="ebacc196-47cb-4833-80dc-43645b025316"
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    <oef:NetExpensesOverAssets
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    <oef:NetExpensesOverAssets
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      id="x_0885fd5f-c733-4955-bd22-1a1feeabe9ba"
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    <oef:NetExpensesOverAssets
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      id="c24086e6-8fbb-4567-ab6c-1f07ae518335"
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    <oef:FeeWaiverOrReimbursementOverAssetsDateOfTermination
      contextRef="S000077554"
      id="x_9b263616-fbf0-4dd7-b191-9893e3ce8e5f">&lt;span style="color:#000000;font-family:Times New Roman;font-size:8pt;font-style:italic;"&gt;June 30, 2026&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:8pt;font-style:italic;"&gt;June 30, 2026&lt;/span&gt;</oef:FeeWaiverOrReimbursementOverAssetsDateOfTermination>
    <oef:ExpenseExampleHeading
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      id="abbc4b9c-7895-44d0-909f-cd6fa02faef0">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-weight:bold;"&gt;Example&lt;/span&gt;</oef:ExpenseExampleHeading>
    <oef:ExpenseExampleNarrativeTextBlock
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      id="x_5adfef9d-4dce-4c73-a9f0-37669ac0cae8">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;margin-left:3.76%;"&gt;This example is intended to help you compare the cost of investing in the Fund with the cost of investing in other funds. The &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;example assumes that you invest $10,000 in the Fund for the time periods indicated, regardless of whether or not you redeem your shares at the end of such periods. The example also assumes that your investment has a 5% return each year and that the Fund&#x2019;s operating expenses remain the same as those shown in the table. The one year amounts shown reflect the expense reimbursement and waiver noted in the expense table. Although your actual costs may be higher or lower, based on these assumptions your costs would be:&lt;/span&gt;</oef:ExpenseExampleNarrativeTextBlock>
    <oef:ExpenseExampleYear01
      contextRef="S000077554_C000238041"
      decimals="INF"
      id="x_69e14686-01e2-410c-9cd6-489c56d696a2"
      unitRef="USD">78</oef:ExpenseExampleYear01>
    <oef:ExpenseExampleYear03
      contextRef="S000077554_C000238041"
      decimals="INF"
      id="a1b7ba8a-09a1-41b4-ac57-d35dbf984ae8"
      unitRef="USD">260</oef:ExpenseExampleYear03>
    <oef:ExpenseExampleYear05
      contextRef="S000077554_C000238041"
      decimals="INF"
      id="x_6a4cd3e8-7c05-43be-a6a6-031057c7eb43"
      unitRef="USD">458</oef:ExpenseExampleYear05>
    <oef:ExpenseExampleYear10
      contextRef="S000077554_C000238041"
      decimals="INF"
      id="x_53205bcd-247f-4b63-95ad-f629fa6de514"
      unitRef="USD">1030</oef:ExpenseExampleYear10>
    <oef:ExpenseExampleYear01
      contextRef="S000077554_C000238038"
      decimals="INF"
      id="x_5e0cf037-ac36-4f83-a356-31379ddb92fc"
      unitRef="USD">73</oef:ExpenseExampleYear01>
    <oef:ExpenseExampleYear03
      contextRef="S000077554_C000238038"
      decimals="INF"
      id="x_7f1855ba-f546-45b1-abe8-484b01d2d850"
      unitRef="USD">244</oef:ExpenseExampleYear03>
    <oef:ExpenseExampleYear05
      contextRef="S000077554_C000238038"
      decimals="INF"
      id="b4a0fcfd-b5c6-4f86-afd0-f980d311e43c"
      unitRef="USD">431</oef:ExpenseExampleYear05>
    <oef:ExpenseExampleYear10
      contextRef="S000077554_C000238038"
      decimals="INF"
      id="x_9b11bd5f-86c4-4e9e-87ce-e168de4b2019"
      unitRef="USD">970</oef:ExpenseExampleYear10>
    <oef:ExpenseExampleYear01
      contextRef="S000077554_C000238040"
      decimals="INF"
      id="ef7b0ef5-43f0-4c6f-b3c8-d182389d0243"
      unitRef="USD">72</oef:ExpenseExampleYear01>
    <oef:ExpenseExampleYear03
      contextRef="S000077554_C000238040"
      decimals="INF"
      id="x_6e93191f-ced0-4f98-9cb2-fc4db80a76d8"
      unitRef="USD">241</oef:ExpenseExampleYear03>
    <oef:ExpenseExampleYear05
      contextRef="S000077554_C000238040"
      decimals="INF"
      id="b9dc2680-cb46-43c5-b806-047a965bd288"
      unitRef="USD">425</oef:ExpenseExampleYear05>
    <oef:ExpenseExampleYear10
      contextRef="S000077554_C000238040"
      decimals="INF"
      id="x_279112fd-e3ef-4829-beb4-0ddace99170b"
      unitRef="USD">959</oef:ExpenseExampleYear10>
    <oef:ExpenseExampleYear01
      contextRef="S000077554_C000238042"
      decimals="INF"
      id="e2fddbaf-6737-4ad0-9c4c-aaca2f3c1a88"
      unitRef="USD">68</oef:ExpenseExampleYear01>
    <oef:ExpenseExampleYear03
      contextRef="S000077554_C000238042"
      decimals="INF"
      id="f9356333-a2d8-43de-86bb-6d40fb361121"
      unitRef="USD">232</oef:ExpenseExampleYear03>
    <oef:ExpenseExampleYear05
      contextRef="S000077554_C000238042"
      decimals="INF"
      id="f5952350-a113-4a8c-a46c-7a1f9c098f83"
      unitRef="USD">409</oef:ExpenseExampleYear05>
    <oef:ExpenseExampleYear10
      contextRef="S000077554_C000238042"
      decimals="INF"
      id="c20216e9-b0e5-4096-8b06-adacf7ecacb3"
      unitRef="USD">923</oef:ExpenseExampleYear10>
    <oef:ExpenseExampleYear01
      contextRef="S000077554_C000238037"
      decimals="INF"
      id="x_8157a959-f052-416e-8ca3-3eb8bcc93782"
      unitRef="USD">78</oef:ExpenseExampleYear01>
    <oef:ExpenseExampleYear03
      contextRef="S000077554_C000238037"
      decimals="INF"
      id="a7580bb2-ffc1-407c-9539-ed10255b97a6"
      unitRef="USD">260</oef:ExpenseExampleYear03>
    <oef:ExpenseExampleYear05
      contextRef="S000077554_C000238037"
      decimals="INF"
      id="x_4c01dcb4-2699-4842-bab2-7f29c45c89aa"
      unitRef="USD">458</oef:ExpenseExampleYear05>
    <oef:ExpenseExampleYear10
      contextRef="S000077554_C000238037"
      decimals="INF"
      id="x_70576230-02e5-45f9-9a0b-ae6c32b279c2"
      unitRef="USD">1030</oef:ExpenseExampleYear10>
    <oef:ExpenseExampleYear01
      contextRef="S000077554_C000238039"
      decimals="INF"
      id="df3b5795-3e80-40db-9b6d-531b40b6a871"
      unitRef="USD">88</oef:ExpenseExampleYear01>
    <oef:ExpenseExampleYear03
      contextRef="S000077554_C000238039"
      decimals="INF"
      id="b0b4edbe-c091-4a43-9cd3-d8a1424eb176"
      unitRef="USD">292</oef:ExpenseExampleYear03>
    <oef:ExpenseExampleYear05
      contextRef="S000077554_C000238039"
      decimals="INF"
      id="x_61263bfd-18e0-49e5-8b6f-8987ec079eab"
      unitRef="USD">512</oef:ExpenseExampleYear05>
    <oef:ExpenseExampleYear10
      contextRef="S000077554_C000238039"
      decimals="INF"
      id="x_00aa42a9-80f8-4614-91e6-d1b84a475944"
      unitRef="USD">1147</oef:ExpenseExampleYear10>
    <oef:PortfolioTurnoverHeading
      contextRef="S000077554"
      id="aeaba698-59e9-4ee4-b9ea-1f4b6ffd0a10">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-weight:bold;"&gt;Portfolio turnover&lt;/span&gt;</oef:PortfolioTurnoverHeading>
    <oef:PortfolioTurnoverTextBlock
      contextRef="S000077554"
      id="x_8de46ef1-a155-41a5-bef8-9b26987c81ff">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;margin-left:3.76%;"&gt;The Fund pays transaction costs, such as commissions, when it buys and sells securities. A higher portfolio turnover rate may &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;result in higher transaction costs and, for holders of Fund shares subject to U.S. taxes, higher income taxes. These transaction costs, which are not reflected in Annual Fund operating expenses or in the Example, affect the Fund&#x2019;s performance.&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; During its fiscal year &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;ended February 28, 2025, the Fund&#x2019;s portfolio turnover rate (excluding short-term investments) was &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;77&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;% of the average value of its portfolio securities.&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; That portfolio turnover rate includes investments in U.S. Treasury Fund, which the Fund uses as a short-term &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;margin-left:0%;"&gt;investment vehicle for cash management. The Fund&#x2019;s portfolio turnover rate during its fiscal year ended February 28, 2025, excluding &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;transactions in U.S. Treasury Fund and other short-term investments, was 51% of the average value of its portfolio securities.&lt;/span&gt;</oef:PortfolioTurnoverTextBlock>
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      decimals="4"
      id="x_56d0b6ef-683f-4905-8ee9-bdd9ee56565b"
      unitRef="pure">0.77</oef:PortfolioTurnoverRate>
    <oef:StrategyHeading
      contextRef="S000077554"
      id="x_1b221f0a-852d-4ad8-92fc-f29ddea7f476">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-weight:bold;"&gt;Principal investment strategies&lt;/span&gt;</oef:StrategyHeading>
    <oef:StrategyNarrativeTextBlock
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      id="x_1c48073e-4743-42de-b16b-d1303c249d5d">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;margin-left:3.76%;"&gt;GMO seeks to achieve the Fund&#x2019;s investment objective by investing the Fund&#x2019;s assets primarily in equities of U.S. small-cap &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;companies that GMO believes to be of high quality. GMO believes a high quality company generally to be a company that has an established business that will deliver a high level of return on past investments and that will use cash flows to make investments with the potential for a high return on capital or to return cash to shareholders through dividends or share buybacks.&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;margin-left:3.76%;"&gt;In selecting securities for the Fund, GMO uses a combination of investment methods, typically considering both systematic factors, &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;based on profitability, profit stability, leverage, and other publicly available financial information, and judgmental factors, based on GMO&#x2019;s assessment of future profitability, capital allocation, growth opportunities, and sustainability against competitive forces. GMO also may rely on valuation methodologies, such as discounted cash flow analysis and multiples of price to earnings, revenues, book values or other fundamental metrics. The Fund also is permitted to invest directly and indirectly (e.g., through underlying funds or derivatives) in equities of companies tied economically to any country in the world, including emerging countries. &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;margin-left:3.76%;"&gt;At times, the Fund may have substantial exposure to a single asset class, industry, sector and companies with similar market &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;capitalizations. The Fund may invest in securities of companies of any market capitalization. The factors GMO considers and investment methods GMO uses can change over time. GMO does not manage the Fund to, or control the Fund&#x2019;s risk relative to, any securities index or securities benchmark.&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;margin-left:3.76%;"&gt;As an alternative to investing directly in equities, the Fund may invest in exchange-traded and over-the-counter (OTC) derivatives &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;and exchange-traded funds (ETFs). The Fund also may invest in derivatives and ETFs in an attempt to obtain or adjust elements of its long or short investment exposure. Derivatives used may include futures, options, forward currency contracts, and swap contracts. In addition, the Fund may lend its portfolio securities.&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;margin-left:3.76%;"&gt;Under normal circumstances, the Fund invests directly and indirectly at least 80% of its assets in equities of small-cap companies &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;(see &#x201c;Name Policies&#x201d;). The term &#x201c;small-cap companies&#x201d; means companies whose market capitalization at the time of investment is less than that of the companies in the bottom decile of market capitalization of the MSCI US IMI Index or that are included in the S&amp;amp;P SmallCap 600 Index. As of May 31, 2025, the market capitalization of companies comprising the bottom decile of the MSCI US IMI Index by market capitalization ranged from approximately $65.7 million to $14.0 billion. As of May 31, 2025, the market capitalization for the companies comprising the S&amp;amp;P SmallCap 600 Index ranged from approximately $185.1&#160;million to $8.2 billion.&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;margin-left:3.76%;"&gt;The Fund also may invest in U.S. Treasury Fund, in money market funds unaffiliated with GMO, and directly in the types of &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;investments typically held by money market funds.&lt;/span&gt;</oef:StrategyNarrativeTextBlock>
    <oef:RiskTextBlock
      contextRef="S000077554_RiskLoseMoneyMember"
      id="x_502ce174-ec2e-444b-aa0b-31c4f730694b">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;Many factors can affect this value, and you may lose money by investing in the Fund.&lt;/span&gt;</oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="S000077554_RiskNotInsuredDepositoryInstitutionMember"
      id="x_05e47889-3492-4ed5-a028-3ac9253b7a04">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;An investment in the Fund is not a bank deposit and is not insured or guaranteed by the FDIC or &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;any government agency.&lt;/span&gt;</oef:RiskTextBlock>
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      contextRef="S000077554_MarketRiskEquitiesRiskMember"
      id="b24885dc-e16d-4b7e-aec2-325e5566c326">&lt;span style="color:#000000;font-family:Times New Roman;font-size:8pt;"&gt;&#x25cf;&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-style:italic;"&gt;Market Risk &#x2013; Equities &#x2013; &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;The market price of an equity in the Fund&#x2019;s portfolio may decline due to factors affecting the issuer or its industry or the economy and equity markets generally. If the Fund purchases an equity for less than its fundamental fair (or intrinsic) value as assessed by GMO, the Fund runs the risk that the market price of the equity will not appreciate or will decline (for example, if GMO&#x2019;s assessment proves to be incorrect or the market fails to recognize the equity&#x2019;s intrinsic value). The Fund also may purchase equities that typically trade at higher multiples of current earnings than other securities, and the market prices of these equities often are more sensitive to changes in future earnings expectations and interest rates than the market prices of equities trading at lower multiples. Declines in stock market prices generally are likely to reduce the net asset value of the Fund&#x2019;s shares.&lt;/span&gt;</oef:RiskTextBlock>
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      contextRef="S000077554_ManagementandOperationalRiskMember"
      id="x_287db73c-fcbb-4189-b95e-634fd74733f6">&lt;span style="color:#000000;font-family:Times New Roman;font-size:8pt;"&gt;&#x25cf;&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-style:italic;"&gt;Management and Operational Risk&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; &#x2013; The Fund runs the risk that GMO&#x2019;s investment techniques will fail to produce intended results.&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;GMO uses quantitative models as part of its investment process. GMO&#x2019;s models may not accurately predict future market movements. In addition, GMO&#x2019;s models rely on assumptions and data that are subject to limitations (e.g., inaccuracies, staleness) that could adversely affect their predictive value.&lt;/span&gt;</oef:RiskTextBlock>
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      contextRef="S000077554_SmallerCompanyRiskMember"
      id="x_6987e2af-2d00-4a35-90c2-f9c6205ea5a7">&lt;span style="color:#000000;font-family:Times New Roman;font-size:8pt;"&gt;&#x25cf;&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-style:italic;"&gt;Smaller Company Risk&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; &#x2013; Small-cap companies may have limited product lines, markets, or financial resources, lack the competitive strength of larger companies, have less experienced managers or depend on a few key employees. The securities of small-cap companies often are less widely held and trade less frequently and in lesser quantities, and their market prices often fluctuate more, than the securities of companies with larger market capitalizations.&lt;/span&gt;</oef:RiskTextBlock>
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      contextRef="S000077554_FocusedInvestmentRiskMember"
      id="x_23b44423-bd91-413d-a3eb-87af33845fe7">&lt;span style="color:#000000;font-family:Times New Roman;font-size:8pt;"&gt;&#x25cf;&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-style:italic;"&gt;Focused Investment Risk&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; &#x2013; Investments in countries, regions, asset classes, sectors, industries, currencies, or issuers that are subject to the same or similar risk factors and investments whose market prices are closely correlated are subject to higher overall risk than investments that are more diversified or whose market prices are not as closely correlated.&lt;/span&gt;</oef:RiskTextBlock>
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      contextRef="S000077554_IlliquidityRiskMember"
      id="x_6a635b7b-4e3f-40e4-8f53-c2ec596840fc">&lt;span style="color:#000000;font-family:Times New Roman;font-size:8pt;"&gt;&#x25cf;&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-style:italic;"&gt;Illiquidity Risk&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; &#x2013; Low trading volume, lack of a market maker, large position size, or legal restrictions increase the risk that the Fund or an underlying fund is limited or prevented from selling particular securities or closing derivative positions at desirable prices at a particular time or at all.&lt;/span&gt;</oef:RiskTextBlock>
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      contextRef="S000077554_DerivativesandShortSalesRiskMember"
      id="de03066e-c4fa-40eb-a448-a5231e8a2182">&lt;span style="color:#000000;font-family:Times New Roman;font-size:8pt;"&gt;&#x25cf;&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-style:italic;"&gt;Derivatives and Short Sales Risk&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; &#x2013; The use of derivatives involves the risk that their value may not change as expected relative to changes in the value of the underlying assets, pools of assets, rates, currencies or indices. Derivatives also present other risks, including market risk, illiquidity risk, currency risk, credit risk, leveraging risk, commodities risk and counterparty risk. The market price of an option is affected by many factors, including changes in the market prices or dividend rates of underlying securities (or in the case of indices, the securities in such indices); the time remaining before expiration; changes in interest rates or exchange rates; and changes in the actual or perceived volatility of the relevant index or underlying securities. The Fund typically creates short investment exposure by selling securities short or by taking a derivative position in which the value of the derivative moves in the opposite direction from the price of an underlying asset, pool of assets, rate, currency or index. Specifically, the net asset value of the Fund&#x2019;s shares will be adversely affected if the securities or other assets that are the subject of the Fund&#x2019;s short exposures appreciate in value. The risk of loss associated with derivatives that provide short investment exposure and short sales of securities is theoretically unlimited.&lt;/span&gt;</oef:RiskTextBlock>
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      contextRef="S000077554_CounterpartyRiskMember"
      id="fee83c21-bcd4-4d17-91b0-74dab88abe1a">&lt;span style="color:#000000;font-family:Times New Roman;font-size:8pt;"&gt;&#x25cf;&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-style:italic;"&gt;Counterparty Risk&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; &#x2013; The Fund runs the risk that the counterparty to a derivatives contract or a clearing member used by the Fund to hold a cleared derivatives contract is unable or unwilling to make timely settlement payments, return the Fund&#x2019;s collateral or otherwise honor its obligations.&lt;/span&gt;</oef:RiskTextBlock>
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      contextRef="S000077554_LeveragingRiskMember"
      id="x_7ee5868f-0a2b-4180-837d-f08329fda48d">&lt;span style="color:#000000;font-family:Times New Roman;font-size:8pt;"&gt;&#x25cf;&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-style:italic;"&gt;Leveraging Risk&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; &#x2013; The use of derivatives, short sales and securities lending can create leverage. Leverage increases the Fund&#x2019;s losses when the value of its investments (including derivatives) declines. In addition, the Fund&#x2019;s portfolio will be leveraged if it exercises its right to delay payment on a redemption and the value of the Fund&#x2019;s assets declines between the time a redemption request is treated as being received by the Fund and the time the Fund liquidates assets to fund that redemption.&lt;/span&gt;</oef:RiskTextBlock>
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      contextRef="S000077554_MarketDisruptionandGeopoliticalRiskMember"
      id="x_92981b6a-23d4-4e7f-999b-e1a2ac8423aa">&lt;span style="color:#000000;font-family:Times New Roman;font-size:8pt;"&gt;&#x25cf;&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-style:italic;"&gt;Market Disruption and Geopolitical Risk&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; &#x2013; Geopolitical and other events (e.g., wars, pandemics, sanctions, terrorism, diplomatic tensions, dramatic changes in regulatory and/or foreign policy, cyberattacks, and rapid technological developments such as artificial intelligence) often disrupt securities markets and adversely affect the general economy or particular economies and markets. Those events, as well as other changes in non-U.S. and U.S. economic and political conditions, could exacerbate other risks or otherwise reduce the value of the Fund&#x2019;s investments.&lt;/span&gt;</oef:RiskTextBlock>
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      contextRef="S000077554_LargeTransactionsRiskMember"
      id="ae43c1a8-b13f-4186-943d-29a683101bd0">&lt;span style="color:#000000;font-family:Times New Roman;font-size:8pt;"&gt;&#x25cf;&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-style:italic;"&gt;Large Transactions Risk&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; &#x2013; To the extent that a large number of shares of the Fund is held by a single shareholder (e.g., an institutional investor or another GMO Fund) or a group of shareholders with a common investment strategy (e.g., GMO asset allocation accounts), the Fund is subject to the risk that a redemption by (or caused by) that shareholder or group will require the Fund to sell investments at disadvantageous prices, disrupt the Fund&#x2019;s operations, lead to temporary overexposure to the Fund&#x2019;s intended investment program or force the Fund&#x2019;s liquidation. The Fund also may be subject to these effects when a number of shareholders collectively redeem or sell a large amount of Fund shares.&lt;/span&gt;</oef:RiskTextBlock>
    <oef:BarChartAndPerformanceTableHeading
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      id="x_97010405-d61b-4b8c-abda-f1e374ccc808">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-weight:bold;"&gt;Performance&lt;/span&gt;</oef:BarChartAndPerformanceTableHeading>
    <oef:PerformanceNarrativeTextBlock
      contextRef="S000077554"
      id="x_9e1103b2-af91-4ae7-8291-1d749264b92d">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;margin-left:3.76%;"&gt;The bar chart and table below provide some indication of the risks of investing in the Fund by showing changes in the Fund&#x2019;s &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;annual total returns from year to year for the periods indicated and by comparing the Fund&#x2019;s average annual total returns for different calendar periods with those of the S&amp;amp;P SmallCap 600 Index and a broad-based securities market index intended solely to represent, in satisfaction of regulatory requirements, the overall domestic equity market.&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; Share classes not shown would have substantially similar &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;annual returns to those below because all share classes invest in the same portfolio of securities. Annual returns vary among share classes to the extent that they bear different expenses. Share classes that bear higher expenses than the share classes shown below would have lower returns. &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;After-tax returns are calculated using the historical highest individual federal marginal income tax rates and do not &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;reflect the impact of state and local taxes.&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; Actual after-tax returns depend on your tax situation and may differ from those shown. After-tax&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; returns shown are not relevant if you are tax-exempt or if you hold your Fund shares through tax-advantaged arrangements (such as a 401(k) plan or individual retirement account). &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;After-tax returns are shown for Class VI shares only; after-tax returns for other classes &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;will vary.&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;&#160; Updated performance information for the Fund is available at &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;www.gmo.com&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;. &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;Past performance (before and after taxes) is not an indication of future performance.&lt;/span&gt;</oef:PerformanceNarrativeTextBlock>
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      contextRef="S000077554"
      id="x_2e7dd4c9-ddc2-4ea6-8e51-b5c6175bd4be">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;margin-left:3.76%;"&gt;The bar chart and table below provide some indication of the risks of investing in the Fund by showing changes in the Fund&#x2019;s &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;annual total returns from year to year for the periods indicated and by comparing the Fund&#x2019;s average annual total returns for different calendar periods with those of the S&amp;amp;P SmallCap 600 Index and a broad-based securities market index intended solely to represent, in satisfaction of regulatory requirements, the overall domestic equity market.&lt;/span&gt;</oef:PerformanceInformationIllustratesVariabilityOfReturns>
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      id="x_52a3ef36-369e-4321-b5ea-7c1730bf7340">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;After-tax returns are calculated using the historical highest individual federal marginal income tax rates and do not &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;reflect the impact of state and local taxes.&lt;/span&gt;</oef:PerformanceTableUsesHighestFederalRate>
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      id="x_461548e3-604c-4f2e-a031-a1f8bc49ddc0">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; Actual after-tax returns depend on your tax situation and may differ from those shown. After-tax&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; returns shown are not relevant if you are tax-exempt or if you hold your Fund shares through tax-advantaged arrangements (such as a 401(k) plan or individual retirement account). &lt;/span&gt;</oef:PerformanceTableNotRelevantToTaxDeferred>
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      id="x_478d5f65-0d4b-40a3-8f45-b14f8fcaf2d4">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;After-tax returns are shown for Class VI shares only; after-tax returns for other classes &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;will vary.&lt;/span&gt;</oef:PerformanceTableOneClassOfAfterTaxShown>
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      id="x_0987af85-395f-4b37-97fd-c75f4fa43ea2">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;www.gmo.com&lt;/span&gt;</oef:PerformanceAvailabilityWebSiteAddress>
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      id="x_82297dd4-58d5-4686-a8db-81fe592ecdb5">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;Past performance (before and after taxes) is not an indication of future performance.&lt;/span&gt;</oef:PerformancePastDoesNotIndicateFuture>
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      id="e876b6f6-6297-49c2-949d-0296cec5665a">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-weight:bold;"&gt;Annual Total Returns/Class VI Shares&lt;/span&gt; &lt;br/&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;Years Ending December 31&lt;/span&gt;</oef:BarChartHeading>
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      id="x_57d70a2b-ef27-45d8-a62c-07d66545dee0">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;Highest Quarter:&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;13.07%&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;-sec-ix-hidden:e3f4e8e4-c96c-4594-8e45-c877fd9063dd"&gt;4Q 2022&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;Lowest Quarter:&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;-4.35%&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;-sec-ix-hidden:x_9eb8878e-1037-4afd-a1c3-50d75e4bc6e6"&gt;3Q 2022&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;Year-to-Date:&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;-9.80%&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;As of&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;3/31/2025&lt;/span&gt;</oef:BarChartClosingTextBlock>
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      id="x_650bd9ee-b5c0-4db5-83f9-f09ca7aad610">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;Highest Quarter:&lt;/span&gt;</oef:HighestQuarterlyReturnLabel>
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      id="f15d4eb7-0e27-4308-8786-28ac6adda5f5"
      unitRef="pure">0.1307</oef:BarChartHighestQuarterlyReturn>
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      id="a6586143-3ee0-4fb7-82f2-27f7ccd38e95">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;Lowest Quarter:&lt;/span&gt;</oef:LowestQuarterlyReturnLabel>
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      id="x_2e48e6a6-734a-4479-b5f4-9951b2e90a3e"
      unitRef="pure">-0.0435</oef:BarChartLowestQuarterlyReturn>
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      id="b5b700dc-1570-4107-857b-4a1fa7918012">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;Year-to-Date:&lt;/span&gt;</oef:YearToDateReturnLabel>
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      id="x_4e4db7b2-e0b4-4da1-95bc-cbdd63f29ecb"
      unitRef="pure">-0.0980</oef:BarChartYearToDateReturn>
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      id="x_64598925-81ca-4d5a-a2dd-7f5d7c4d4bf4">2025-03-31</oef:BarChartYearToDateReturnDate>
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      id="x_56fb7d4d-f160-4630-a7c3-ca8d8d751aca">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-weight:bold;"&gt;Average Annual Total Returns&lt;/span&gt; &lt;br/&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;Periods Ending December 31, 2024&lt;/span&gt;</oef:PerformanceTableHeading>
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      id="x_668a8d44-b36b-442c-95b5-fa8e7d01c04c">2022-11-15</oef:PerfInceptionDate>
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      contextRef="C000238042"
      id="eb506332-42b6-47cd-b92e-4632e710de9c">2022-09-20</oef:PerfInceptionDate>
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      unitRef="pure">0.1164</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000238042_SandPComposite1500IndexMember_01Jan2024_31Dec2024"
      decimals="4"
      id="x_35f99871-3690-4b58-9bd9-7afd5793e576"
      unitRef="pure">0.2395</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000238042_SandPComposite1500IndexMember_20Sep2022_31Dec2024"
      decimals="4"
      id="x_989f0459-2ed2-45f5-b8c5-e70ca761caf7"
      unitRef="pure">0.2152</oef:AvgAnnlRtrPct>
    <oef:PerfInceptionDate
      contextRef="C000238039"
      id="x_10e599f1-58db-4819-a1ce-40a4bce7594c">2022-11-15</oef:PerfInceptionDate>
    <oef:AvgAnnlRtrPct
      contextRef="C000238039_01Jan2024_31Dec2024"
      decimals="4"
      id="x_5bc43a32-fd31-4c25-9fe3-0e40e2a870ff"
      unitRef="pure">0.0926</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000238039_15Nov2022_31Dec2024"
      decimals="4"
      id="x_93d94694-bd34-41cd-9325-06d331d8e42a"
      unitRef="pure">0.1573</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000238039_SandPSmallCap600IndexMember_01Jan2024_31Dec2024"
      decimals="4"
      id="x_21dc9e0d-7804-4615-a52a-20802dbaea0b"
      unitRef="pure">0.0870</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000238039_SandPSmallCap600IndexMember_15Nov2022_31Dec2024"
      decimals="4"
      id="x_246214a4-dd4e-47fb-b2b2-29bc0c77417d"
      unitRef="pure">0.0834</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000238039_SandPComposite1500IndexMember_01Jan2024_31Dec2024"
      decimals="4"
      id="ce374b90-3482-4002-bfd2-299c63d7fe01"
      unitRef="pure">0.2395</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000238039_SandPComposite1500IndexMember_15Nov2022_31Dec2024"
      decimals="4"
      id="x_8b87d52a-d27f-4ac8-867d-770895f94997"
      unitRef="pure">0.2092</oef:AvgAnnlRtrPct>
    <oef:ObjectiveHeading
      contextRef="S000004081"
      id="x_5d6105c3-cb0b-4503-80d6-0d6933edfaa5">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-weight:bold;"&gt;Investment objective&lt;/span&gt;</oef:ObjectiveHeading>
    <oef:ObjectivePrimaryTextBlock
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      id="x_5b2112b2-a351-4276-8f7a-1cb37980cecf">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;High total return.&lt;/span&gt;</oef:ObjectivePrimaryTextBlock>
    <oef:ExpenseHeading
      contextRef="S000004081"
      id="x_81896399-e609-4998-bde0-934b182440f7">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-weight:bold;"&gt;Fees and expenses&lt;/span&gt;</oef:ExpenseHeading>
    <oef:ExpenseNarrativeTextBlock
      contextRef="S000004081"
      id="x_33093f6e-7b1c-4a16-9183-c44f666f3609">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;margin-left:3.76%;"&gt;The table below describes the fees and expenses that you may bear for each class of shares if you buy, hold, and sell shares of the &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;Fund. You may pay other fees, such as brokerage commissions and other fees to financial intermediaries, which are not reflected in the table and example below.&lt;/span&gt;</oef:ExpenseNarrativeTextBlock>
    <oef:OperatingExpensesCaption
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      id="x_86294f57-2f93-4982-87ed-b0b6854f20e6">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-weight:bold;"&gt;Annual Fund operating expenses &lt;/span&gt; &lt;br/&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;(expenses that you bear each year as a percentage of the value of your investment)&lt;/span&gt;</oef:OperatingExpensesCaption>
    <oef:ManagementFeesOverAssets
      contextRef="S000004081_C000011423"
      decimals="4"
      id="d75c0def-9da7-4db0-98e4-0b7945313d36"
      unitRef="pure">0.0046</oef:ManagementFeesOverAssets>
    <oef:ManagementFeesOverAssets
      contextRef="S000004081_C000011424"
      decimals="4"
      id="bc94b85c-83d8-468a-8b88-7c40a2ffea74"
      unitRef="pure">0.0041</oef:ManagementFeesOverAssets>
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      contextRef="S000004081_C000011425"
      decimals="5"
      id="e3681344-088b-4f81-abe6-2bd8f62cb05d"
      unitRef="pure">0.00395</oef:ManagementFeesOverAssets>
    <oef:ManagementFeesOverAssets
      contextRef="S000004081_C000011426"
      decimals="5"
      id="x_57e191cb-1ee6-478d-ad67-d0e185a1830f"
      unitRef="pure">0.00365</oef:ManagementFeesOverAssets>
    <oef:ManagementFeesOverAssets
      contextRef="S000004081_C000213354"
      decimals="4"
      id="x_18392df6-b760-4bb6-8533-067088831cad"
      unitRef="pure">0.0046</oef:ManagementFeesOverAssets>
    <oef:ManagementFeesOverAssets
      contextRef="S000004081_C000213355"
      decimals="4"
      id="dd5da285-6d28-46f0-ae62-7594e4097404"
      unitRef="pure">0.0046</oef:ManagementFeesOverAssets>
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      contextRef="S000004081_C000011423"
      decimals="4"
      id="x_9d3e8f88-fdf8-438b-ac4a-a91823d88418"
      unitRef="pure">0.0013</oef:OtherExpensesOverAssets>
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      contextRef="S000004081_C000011424"
      decimals="4"
      id="d39c1f05-7540-45a7-a209-bfe4a6fbf8a4"
      unitRef="pure">0.0013</oef:OtherExpensesOverAssets>
    <oef:OtherExpensesOverAssets
      contextRef="S000004081_C000011425"
      decimals="4"
      id="x_4913f3f3-b953-46bd-a171-17ae50bcab6c"
      unitRef="pure">0.0013</oef:OtherExpensesOverAssets>
    <oef:OtherExpensesOverAssets
      contextRef="S000004081_C000011426"
      decimals="4"
      id="x_7428910d-478a-4fb0-92c0-9ef0db3ae16e"
      unitRef="pure">0.0013</oef:OtherExpensesOverAssets>
    <oef:OtherExpensesOverAssets
      contextRef="S000004081_C000213354"
      decimals="4"
      id="x_474b9a41-3ca7-4f9f-b93f-71501ea4f32d"
      unitRef="pure">0.0013</oef:OtherExpensesOverAssets>
    <oef:OtherExpensesOverAssets
      contextRef="S000004081_C000213355"
      decimals="4"
      id="x_707a0128-0786-46d9-8e20-e06cf9a7e33a"
      unitRef="pure">0.0025</oef:OtherExpensesOverAssets>
    <oef:ExpensesOverAssets
      contextRef="S000004081_C000011423"
      decimals="4"
      id="a4cd6616-37fa-48a9-b713-23484a5c157c"
      unitRef="pure">0.0059</oef:ExpensesOverAssets>
    <oef:ExpensesOverAssets
      contextRef="S000004081_C000011424"
      decimals="4"
      id="x_37498c25-77e8-455c-9a1d-33c6a020c7e4"
      unitRef="pure">0.0054</oef:ExpensesOverAssets>
    <oef:ExpensesOverAssets
      contextRef="S000004081_C000011425"
      decimals="4"
      id="x_4b6ba253-1e79-4b20-a361-2b2b5a53e320"
      unitRef="pure">0.0053</oef:ExpensesOverAssets>
    <oef:ExpensesOverAssets
      contextRef="S000004081_C000011426"
      decimals="4"
      id="x_7cd7a2f9-5eb9-4c52-a301-3dd145bf00b5"
      unitRef="pure">0.0050</oef:ExpensesOverAssets>
    <oef:ExpensesOverAssets
      contextRef="S000004081_C000213354"
      decimals="4"
      id="x_086d1b2c-cc58-4597-bd5c-df844934cbf7"
      unitRef="pure">0.0059</oef:ExpensesOverAssets>
    <oef:ExpensesOverAssets
      contextRef="S000004081_C000213355"
      decimals="4"
      id="x_6898a986-b27d-4a01-8167-7ff130b53cc1"
      unitRef="pure">0.0071</oef:ExpensesOverAssets>
    <oef:FeeWaiverOrReimbursementOverAssets
      contextRef="S000004081_C000011423"
      decimals="4"
      id="x_96d0db85-442f-4cde-a48c-eacb4dfa9a81"
      unitRef="pure">-0.0010</oef:FeeWaiverOrReimbursementOverAssets>
    <oef:FeeWaiverOrReimbursementOverAssets
      contextRef="S000004081_C000011424"
      decimals="4"
      id="x_53bf6c8f-cdad-4c2a-9470-50fe32e4c034"
      unitRef="pure">-0.0010</oef:FeeWaiverOrReimbursementOverAssets>
    <oef:FeeWaiverOrReimbursementOverAssets
      contextRef="S000004081_C000011425"
      decimals="4"
      id="bb8222e1-53d4-4a13-b5aa-359c1083139a"
      unitRef="pure">-0.0010</oef:FeeWaiverOrReimbursementOverAssets>
    <oef:FeeWaiverOrReimbursementOverAssets
      contextRef="S000004081_C000011426"
      decimals="4"
      id="x_31829d45-3ea9-48e4-945e-d7c50cf6857c"
      unitRef="pure">-0.0010</oef:FeeWaiverOrReimbursementOverAssets>
    <oef:FeeWaiverOrReimbursementOverAssets
      contextRef="S000004081_C000213354"
      decimals="4"
      id="bcf0eec8-1955-4b8a-9cd5-7122a3103576"
      unitRef="pure">-0.0010</oef:FeeWaiverOrReimbursementOverAssets>
    <oef:FeeWaiverOrReimbursementOverAssets
      contextRef="S000004081_C000213355"
      decimals="4"
      id="d868040b-6ef0-430f-a21b-ad6b7bfd7665"
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    <oef:NetExpensesOverAssets
      contextRef="S000004081_C000011423"
      decimals="4"
      id="fd777cbd-c23c-44a3-83fb-adf5b539c912"
      unitRef="pure">0.0049</oef:NetExpensesOverAssets>
    <oef:NetExpensesOverAssets
      contextRef="S000004081_C000011424"
      decimals="4"
      id="c8a9bdd1-9eed-4d6e-946c-4d9faaca6980"
      unitRef="pure">0.0044</oef:NetExpensesOverAssets>
    <oef:NetExpensesOverAssets
      contextRef="S000004081_C000011425"
      decimals="4"
      id="ada3fc49-6da8-4bf8-8f38-8956f021283f"
      unitRef="pure">0.0043</oef:NetExpensesOverAssets>
    <oef:NetExpensesOverAssets
      contextRef="S000004081_C000011426"
      decimals="4"
      id="x_1612a2d3-550f-458e-bd40-446d813045f2"
      unitRef="pure">0.0040</oef:NetExpensesOverAssets>
    <oef:NetExpensesOverAssets
      contextRef="S000004081_C000213354"
      decimals="4"
      id="b21e8225-e004-4283-bd14-95866cba02a4"
      unitRef="pure">0.0049</oef:NetExpensesOverAssets>
    <oef:NetExpensesOverAssets
      contextRef="S000004081_C000213355"
      decimals="4"
      id="b9e9d0c3-c662-4a45-92a7-02ac01c7aa46"
      unitRef="pure">0.0061</oef:NetExpensesOverAssets>
    <oef:FeeWaiverOrReimbursementOverAssetsDateOfTermination
      contextRef="S000004081"
      id="x_4f70d9dc-0eb6-4cba-a129-49547f285c3c">&lt;span style="color:#000000;font-family:Times New Roman;font-size:8pt;font-style:italic;"&gt;June 30, 2026&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:8pt;font-style:italic;"&gt;June 30, 2026&lt;/span&gt;</oef:FeeWaiverOrReimbursementOverAssetsDateOfTermination>
    <oef:ExpenseExampleHeading
      contextRef="S000004081"
      id="ad24c36f-6874-411f-9bd0-d91f8800ffac">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-weight:bold;"&gt;Example&lt;/span&gt;</oef:ExpenseExampleHeading>
    <oef:ExpenseExampleNarrativeTextBlock
      contextRef="S000004081"
      id="ec402aab-0586-4968-84d5-478cc660945d">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;margin-left:3.76%;"&gt;This example is intended to help you compare the cost of investing in the Fund with the cost of investing in other funds. The &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;example assumes that you invest $10,000 in the Fund for the time periods indicated, regardless of whether or not you redeem your shares at the end of such periods. The example also assumes that your investment has a 5% return each year and that the Fund&#x2019;s operating expenses remain the same as those shown in the table. The one year amounts shown reflect the expense reimbursement and waiver noted in the expense table. Although your actual costs may be higher or lower, based on these assumptions your costs would be:&lt;/span&gt;</oef:ExpenseExampleNarrativeTextBlock>
    <oef:ExpenseExampleYear01
      contextRef="S000004081_C000011423"
      decimals="INF"
      id="x_313ed20a-5cde-4c69-83b0-e52c295b6e7d"
      unitRef="USD">50</oef:ExpenseExampleYear01>
    <oef:ExpenseExampleYear03
      contextRef="S000004081_C000011423"
      decimals="INF"
      id="x_791fc87b-63ab-43fc-b52d-45eb8c05c55e"
      unitRef="USD">179</oef:ExpenseExampleYear03>
    <oef:ExpenseExampleYear05
      contextRef="S000004081_C000011423"
      decimals="INF"
      id="e67646b2-a112-43b9-b77b-82b3aaf6bf05"
      unitRef="USD">319</oef:ExpenseExampleYear05>
    <oef:ExpenseExampleYear10
      contextRef="S000004081_C000011423"
      decimals="INF"
      id="x_8daef2f2-2206-4644-ad21-cba9eada5814"
      unitRef="USD">728</oef:ExpenseExampleYear10>
    <oef:ExpenseExampleYear01
      contextRef="S000004081_C000011424"
      decimals="INF"
      id="x_9a3cdce9-c464-435f-a28c-e2942ec9440d"
      unitRef="USD">45</oef:ExpenseExampleYear01>
    <oef:ExpenseExampleYear03
      contextRef="S000004081_C000011424"
      decimals="INF"
      id="x_9c4fd133-2fc2-44e3-baee-3154813b0ecd"
      unitRef="USD">163</oef:ExpenseExampleYear03>
    <oef:ExpenseExampleYear05
      contextRef="S000004081_C000011424"
      decimals="INF"
      id="x_3a18b075-7b8e-40bc-821c-44800f10beb3"
      unitRef="USD">292</oef:ExpenseExampleYear05>
    <oef:ExpenseExampleYear10
      contextRef="S000004081_C000011424"
      decimals="INF"
      id="fb6a141a-4777-4cd9-818d-3438c3b7c8d1"
      unitRef="USD">667</oef:ExpenseExampleYear10>
    <oef:ExpenseExampleYear01
      contextRef="S000004081_C000011425"
      decimals="INF"
      id="d0a9ff2e-5ac1-4f96-81d9-a430957753dd"
      unitRef="USD">44</oef:ExpenseExampleYear01>
    <oef:ExpenseExampleYear03
      contextRef="S000004081_C000011425"
      decimals="INF"
      id="b7b99aed-a971-419f-8d44-acc4d45d8b1f"
      unitRef="USD">160</oef:ExpenseExampleYear03>
    <oef:ExpenseExampleYear05
      contextRef="S000004081_C000011425"
      decimals="INF"
      id="aa944bb7-3fc0-4e5e-bc62-59a3916ecb29"
      unitRef="USD">286</oef:ExpenseExampleYear05>
    <oef:ExpenseExampleYear10
      contextRef="S000004081_C000011425"
      decimals="INF"
      id="x_8a69c5bd-b51e-4a74-a4de-e0675745d941"
      unitRef="USD">655</oef:ExpenseExampleYear10>
    <oef:ExpenseExampleYear01
      contextRef="S000004081_C000011426"
      decimals="INF"
      id="ad0040f4-411b-48f2-b45a-4fdaa54afd97"
      unitRef="USD">41</oef:ExpenseExampleYear01>
    <oef:ExpenseExampleYear03
      contextRef="S000004081_C000011426"
      decimals="INF"
      id="bab9c264-cf80-4856-8753-34442c3b66fa"
      unitRef="USD">150</oef:ExpenseExampleYear03>
    <oef:ExpenseExampleYear05
      contextRef="S000004081_C000011426"
      decimals="INF"
      id="x_96619847-5de4-4fdd-a3d2-43e13b55d87a"
      unitRef="USD">270</oef:ExpenseExampleYear05>
    <oef:ExpenseExampleYear10
      contextRef="S000004081_C000011426"
      decimals="INF"
      id="x_40edfd75-7241-46cb-b8d7-30f3636e7e80"
      unitRef="USD">619</oef:ExpenseExampleYear10>
    <oef:ExpenseExampleYear01
      contextRef="S000004081_C000213354"
      decimals="INF"
      id="ee57c96c-9dee-4921-a5a8-e743833264be"
      unitRef="USD">50</oef:ExpenseExampleYear01>
    <oef:ExpenseExampleYear03
      contextRef="S000004081_C000213354"
      decimals="INF"
      id="x_9b0d6417-98fb-459d-9fc7-6f513c6dea94"
      unitRef="USD">179</oef:ExpenseExampleYear03>
    <oef:ExpenseExampleYear05
      contextRef="S000004081_C000213354"
      decimals="INF"
      id="x_4f9b107f-ab4c-4fd4-8f5a-f150c2374b69"
      unitRef="USD">319</oef:ExpenseExampleYear05>
    <oef:ExpenseExampleYear10
      contextRef="S000004081_C000213354"
      decimals="INF"
      id="x_155860b8-1324-4912-980c-b5740270d94f"
      unitRef="USD">728</oef:ExpenseExampleYear10>
    <oef:ExpenseExampleYear01
      contextRef="S000004081_C000213355"
      decimals="INF"
      id="x_819d5553-c345-4fe6-91de-7a27fa86b809"
      unitRef="USD">62</oef:ExpenseExampleYear01>
    <oef:ExpenseExampleYear03
      contextRef="S000004081_C000213355"
      decimals="INF"
      id="x_12eb5552-8974-4e41-bdc3-8bf0e76ab5ea"
      unitRef="USD">217</oef:ExpenseExampleYear03>
    <oef:ExpenseExampleYear05
      contextRef="S000004081_C000213355"
      decimals="INF"
      id="x_816850e0-7533-44ec-9d43-374d14db26f8"
      unitRef="USD">385</oef:ExpenseExampleYear05>
    <oef:ExpenseExampleYear10
      contextRef="S000004081_C000213355"
      decimals="INF"
      id="f04e03ab-16e7-446d-b4c2-64a09db64f81"
      unitRef="USD">873</oef:ExpenseExampleYear10>
    <oef:PortfolioTurnoverHeading
      contextRef="S000004081"
      id="af9cbd2e-84b6-4652-8cd8-eb1ffe56679e">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-weight:bold;"&gt;Portfolio turnover&lt;/span&gt;</oef:PortfolioTurnoverHeading>
    <oef:PortfolioTurnoverTextBlock
      contextRef="S000004081"
      id="x_13589c42-c326-4891-8167-584a1309511b">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;margin-left:3.76%;"&gt;The Fund pays transaction costs, such as commissions, when it buys and sells securities. A higher portfolio turnover rate may &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;result in higher transaction costs and, for holders of Fund shares subject to U.S. taxes, higher income taxes. These transaction costs, which are not reflected in Annual Fund operating expenses or in the Example, affect the Fund&#x2019;s performance.&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; During its fiscal year &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;ended February 28, 2025, the Fund&#x2019;s portfolio turnover rate (excluding short-term investments) was &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;97&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;% of the average value of its portfolio securities.&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; That portfolio turnover rate includes investments in U.S. Treasury Fund, which the Fund uses as a short-term &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;investment vehicle for cash management. The Fund&#x2019;s portfolio turnover rate during its fiscal year ended February 28, 2025, excluding transactions in U.S. Treasury Fund and other short-term investments, was 89% of the average value of its portfolio securities.&lt;/span&gt;</oef:PortfolioTurnoverTextBlock>
    <oef:PortfolioTurnoverRate
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      decimals="4"
      id="x_921da0b9-c60c-4102-aef7-968699a498af"
      unitRef="pure">0.97</oef:PortfolioTurnoverRate>
    <oef:StrategyHeading
      contextRef="S000004081"
      id="e26175da-6808-4f9b-a0f9-e38334ff642f">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-weight:bold;"&gt;Principal investment strategies&lt;/span&gt;</oef:StrategyHeading>
    <oef:StrategyNarrativeTextBlock
      contextRef="S000004081"
      id="x_6e86b17d-773b-4a5b-9012-628f3cfc8127">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;margin-left:3.76%;"&gt;GMO seeks to achieve the Fund&#x2019;s investment objective by investing the Fund&#x2019;s assets primarily in securities traded in U.S. equity &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;markets. GMO selects the securities the Fund buys and sells based on its evaluation of companies&#x2019; published financial information, securities&#x2019; prices, equity and other markets, the overall global economy, and governmental policies. &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;margin-left:3.76%;"&gt;In selecting securities for the Fund, GMO uses a combination of proprietary quantitative investment methods to identify U.S. &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;equities GMO believes have positive return potential relative to other U.S. equities. Some of these methods evaluate individual companies or groups of companies based on the ratio of their security price to historical financial information and forecasted financial information, such as return on invested capital, profitability, cash flow and earnings, and a comparison of these ratios to current and historical averages. Other methods focus on patterns of information, such as price movement or volatility of an asset class, security, or market, and macroeconomic factors. In constructing the Fund&#x2019;s portfolio, GMO also considers position size, sector and industry exposure, market capitalization, liquidity, and transaction costs. At times, the Fund may have substantial exposure to a single asset class, industry, sector and companies with similar market capitalizations. The Fund may invest in securities of companies of any market capitalization. GMO also may consider ESG (environmental, social and governance) criteria. For example, GMO generally avoids investing the Fund&#x2019;s assets in companies engaged in the manufacture, supply, or distribution of cluster munitions, as well as companies primarily involved in the mining and production of thermal coal. The factors GMO considers and investment methods GMO uses can change over time.&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;margin-left:3.76%;"&gt;As an alternative to investing directly in equities, the Fund may invest in exchange-traded and over-the-counter (OTC) derivatives &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;and exchange-traded funds (ETFs). The Fund also may invest in derivatives and ETFs in an attempt to obtain or adjust elements of its long or short investment exposure. Derivatives used may include futures, options, and swap contracts. In addition, the Fund may lend its portfolio securities.&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;margin-left:3.76%;"&gt;Under normal circumstances, the Fund invests directly and indirectly (e.g., through underlying funds or derivatives) at least 80% of &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;its assets in equities tied economically to the United States (see &#x201c;Name Policies&#x201d;).&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;margin-left:3.76%;"&gt;The Fund also may invest in U.S. Treasury Fund, in money market funds unaffiliated with GMO, and directly in the types of &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;investments typically held by money market funds.&lt;/span&gt;</oef:StrategyNarrativeTextBlock>
    <oef:RiskTextBlock
      contextRef="S000004081_RiskLoseMoneyMember"
      id="x_3d45a8c0-861f-4ec2-ad7e-52931b17968f">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;Many factors can affect this value, and you may lose money by investing in the Fund.&lt;/span&gt;</oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="S000004081_RiskNotInsuredDepositoryInstitutionMember"
      id="x_6aca650c-0834-4416-8eb5-9f08aebb395d">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;An investment in the Fund is not a bank deposit and is not insured or guaranteed by the FDIC or &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;any government agency.&lt;/span&gt;</oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="S000004081_MarketRiskEquitiesRiskMember"
      id="x_8875c105-bbe8-446a-a150-ff81c0adcded">&lt;span style="color:#000000;font-family:Times New Roman;font-size:8pt;"&gt;&#x25cf;&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-style:italic;"&gt;Market Risk &#x2013; Equities &#x2013; &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;The market price of an equity in the Fund&#x2019;s portfolio may decline due to factors affecting the issuer or its industry or the economy and equity markets generally. If the Fund purchases an equity for less than its fundamental fair (or intrinsic) value as assessed by GMO, the Fund runs the risk that the market price of the equity will not appreciate or will decline (for example, if GMO&#x2019;s assessment proves to be incorrect or the market fails to recognize the equity&#x2019;s intrinsic value). The Fund also may purchase equities that typically trade at higher multiples of current earnings than other securities, and the market prices of these equities often are more sensitive to changes in future earnings expectations and interest rates than the market prices of equities trading at lower multiples. Declines in stock market prices generally are likely to reduce the net asset value of the Fund&#x2019;s shares.&lt;/span&gt;</oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="S000004081_ManagementandOperationalRiskMember"
      id="ea3d0550-26a4-448a-9e01-fc261bafd1c9">&lt;span style="color:#000000;font-family:Times New Roman;font-size:8pt;"&gt;&#x25cf;&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-style:italic;"&gt;Management and Operational Risk&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; &#x2013; The Fund runs the risk that GMO&#x2019;s investment techniques will fail to produce intended results.&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;GMO uses quantitative models as part of its investment process. GMO&#x2019;s models may not accurately predict future market movements. In addition, GMO&#x2019;s models rely on assumptions and data that are subject to limitations (e.g., inaccuracies, staleness) that could adversely affect their predictive value.&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; The Fund also runs the risk that GMO&#x2019;s assessment of an investment, including a &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;security&#x2019;s fundamental fair (or intrinsic) value, is wrong or that deficiencies in GMO&#x2019;s or another service provider&#x2019;s internal systems or controls will cause losses for the Fund or impair Fund operations.&lt;/span&gt;</oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="S000004081_MarketDisruptionandGeopoliticalRiskMember"
      id="e452ce36-54d5-4ed4-8c54-65353335e044">&lt;span style="color:#000000;font-family:Times New Roman;font-size:8pt;"&gt;&#x25cf;&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-style:italic;"&gt;Market Disruption and Geopolitical Risk&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; &#x2013; Geopolitical and other events (e.g., wars, pandemics, sanctions, terrorism, diplomatic tensions, dramatic changes in regulatory and/or foreign policy, cyberattacks, and rapid technological developments such as artificial intelligence) often disrupt securities markets and adversely affect the general economy or particular economies and markets. Those events, as well as other changes in non-U.S. and U.S. economic and political conditions, could exacerbate other risks or otherwise reduce the value of the Fund&#x2019;s investments.&lt;/span&gt;</oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="S000004081_FocusedInvestmentRiskMember"
      id="x_8e982fb1-5fdc-4905-8685-0e675303d4d1">&lt;span style="color:#000000;font-family:Times New Roman;font-size:8pt;"&gt;&#x25cf;&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-style:italic;"&gt;Focused Investment Risk&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; &#x2013; Investments in countries, regions, asset classes, sectors, industries, currencies, or issuers that are subject to the same or similar risk factors and investments whose market prices are closely correlated are subject to higher overall risk than investments that are more diversified or whose market prices are not as closely correlated.&lt;/span&gt;</oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="S000004081_SmallerCompanyRiskMember"
      id="x_8622ab4f-20f3-4b56-ab07-038b23fd6f79">&lt;span style="color:#000000;font-family:Times New Roman;font-size:8pt;"&gt;&#x25cf;&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-style:italic;"&gt;Smaller Company Risk&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; &#x2013; Smaller companies may have limited product lines, markets, or financial resources, lack the competitive strength of larger companies, have less experienced managers or depend on a few key employees. The securities of companies with smaller market capitalizations often are less widely held and trade less frequently and in lesser quantities, and their market prices often fluctuate more, than the securities of companies with larger market capitalizations.&lt;/span&gt;</oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="S000004081_IlliquidityRiskMember"
      id="f6932de9-5867-444b-9aa9-15d897784160">&lt;span style="color:#000000;font-family:Times New Roman;font-size:8pt;"&gt;&#x25cf;&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-style:italic;"&gt;Illiquidity Risk&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; &#x2013; Low trading volume, lack of a market maker, large position size, or legal restrictions increase the risk that the Fund or an underlying fund is limited or prevented from selling particular securities or closing derivative positions at desirable prices at a particular time or at all.&lt;/span&gt;</oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="S000004081_DerivativesandShortSalesRiskMember"
      id="f88721f0-7f1a-4baf-9557-204ce400c6bb">&lt;span style="color:#000000;font-family:Times New Roman;font-size:8pt;"&gt;&#x25cf;&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-style:italic;"&gt;Derivatives and Short Sales Risk&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; &#x2013; The use of derivatives involves the risk that their value may not change as expected relative to changes in the value of the underlying assets, pools of assets, rates, currencies or indices. Derivatives also present other risks, including market risk, illiquidity risk, currency risk, credit risk, leveraging risk, commodities risk and counterparty risk. The market price of an option is affected by many factors, including changes in the market prices or dividend rates of underlying securities (or in the case of indices, the securities in such indices); the time remaining before expiration; changes in interest rates or exchange rates; and changes in the actual or perceived volatility of the relevant index or underlying securities. The Fund typically creates short investment exposure by selling securities short or by taking a derivative position in which the value of the derivative moves in the opposite direction from the price of an underlying asset, pool of assets, rate, currency or index. Specifically, the net asset value of the Fund&#x2019;s shares will be adversely affected if the securities or other assets that are the subject of the Fund&#x2019;s short exposures appreciate in value. The risk of loss associated with derivatives that provide short investment exposure and short sales of securities is theoretically unlimited.&lt;/span&gt;</oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="S000004081_CounterpartyRiskMember"
      id="x_8b870a82-3d53-4fac-8ebd-15d1ba8f3720">&lt;span style="color:#000000;font-family:Times New Roman;font-size:8pt;"&gt;&#x25cf;&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-style:italic;"&gt;Counterparty Risk&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; &#x2013; The Fund runs the risk that the counterparty to a derivatives contract or a clearing member used by the Fund to hold a cleared derivatives contract is unable or unwilling to make timely settlement payments, return the Fund&#x2019;s collateral or otherwise honor its obligations.&lt;/span&gt;</oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="S000004081_LeveragingRiskMember"
      id="x_9b057946-5ff4-4173-b65c-21cb9d1bee54">&lt;span style="color:#000000;font-family:Times New Roman;font-size:8pt;"&gt;&#x25cf;&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-style:italic;"&gt;Leveraging Risk&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; &#x2013; The use of derivatives, short sales and securities lending can create leverage. Leverage increases the Fund&#x2019;s losses when the value of its investments (including derivatives) declines. In addition, the Fund&#x2019;s portfolio will be leveraged if it exercises its right to delay payment on a redemption and the value of the Fund&#x2019;s assets declines between the time a redemption request is treated as being received by the Fund and the time the Fund liquidates assets to fund that redemption.&lt;/span&gt;</oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="S000004081_LargeTransactionsRiskMember"
      id="df51558a-b06e-4077-95e2-625994748946">&lt;span style="color:#000000;font-family:Times New Roman;font-size:8pt;"&gt;&#x25cf;&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-style:italic;"&gt;Large Transactions Risk&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; &#x2013; To the extent that a large number of shares of the Fund is held by a single shareholder (e.g., an institutional investor or another GMO Fund) or a group of shareholders with a common investment strategy (e.g., GMO asset allocation accounts), the Fund is subject to the risk that a redemption by (or caused by) that shareholder or group will require the Fund to sell investments at disadvantageous prices, disrupt the Fund&#x2019;s operations, lead to temporary overexposure to the Fund&#x2019;s intended investment program or force the Fund&#x2019;s liquidation. The Fund also may be subject to these effects when a number of shareholders collectively redeem or sell a large amount of Fund shares.&lt;/span&gt;</oef:RiskTextBlock>
    <oef:BarChartAndPerformanceTableHeading
      contextRef="S000004081"
      id="x_3d9f4a62-5b68-4f64-b692-c43129eefe2a">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-weight:bold;"&gt;Performance&lt;/span&gt;</oef:BarChartAndPerformanceTableHeading>
    <oef:PerformanceNarrativeTextBlock
      contextRef="S000004081"
      id="x_1a935613-664c-4172-bfbd-7bef6ff46159">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;margin-left:3.76%;"&gt;The bar chart and table below provide some indication of the risks of investing in the Fund by showing changes in the Fund&#x2019;s &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;annual total returns from year to year for the periods indicated and by comparing the Fund&#x2019;s average annual total returns for different calendar periods with those of a broad-based securities market index.&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; Share classes not shown would have substantially similar annual &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;returns to those below because all share classes invest in the same portfolio of securities. Annual returns vary among share classes to the extent that they bear different expenses. Share classes that bear higher expenses than the share classes shown below would have lower returns. &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;After-tax returns are calculated using the historical highest individual federal marginal income tax rates and do not reflect the &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;impact of state and local taxes.&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; Actual after-tax returns depend on your tax situation and may differ from those shown. After-tax returns &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;shown are not relevant if you are tax-exempt or if you hold your Fund shares through tax-advantaged arrangements (such as a 401(k) plan or individual retirement account). &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;After-tax returns are shown for Class III shares only; after-tax returns for other classes &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;will vary.&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; Updated performance information for the Fund is available at &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;www.gmo.com&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;. &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;Past performance (before and after taxes) is not an indication of future performance.&lt;/span&gt;</oef:PerformanceNarrativeTextBlock>
    <oef:PerformanceInformationIllustratesVariabilityOfReturns
      contextRef="S000004081"
      id="f1369abe-b0bc-4eee-958b-191f12d90c54">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;margin-left:3.76%;"&gt;The bar chart and table below provide some indication of the risks of investing in the Fund by showing changes in the Fund&#x2019;s &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;annual total returns from year to year for the periods indicated and by comparing the Fund&#x2019;s average annual total returns for different calendar periods with those of a broad-based securities market index.&lt;/span&gt;</oef:PerformanceInformationIllustratesVariabilityOfReturns>
    <oef:PerformanceTableUsesHighestFederalRate
      contextRef="S000004081"
      id="x_932e51ef-6a7a-4ccd-9066-bf7d88302976">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;After-tax returns are calculated using the historical highest individual federal marginal income tax rates and do not reflect the &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;impact of state and local taxes.&lt;/span&gt;</oef:PerformanceTableUsesHighestFederalRate>
    <oef:PerformanceTableNotRelevantToTaxDeferred
      contextRef="S000004081"
      id="a082d8c8-31a1-4edd-adcc-821631c917db">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; Actual after-tax returns depend on your tax situation and may differ from those shown. After-tax returns &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;shown are not relevant if you are tax-exempt or if you hold your Fund shares through tax-advantaged arrangements (such as a 401(k) plan or individual retirement account). &lt;/span&gt;</oef:PerformanceTableNotRelevantToTaxDeferred>
    <oef:PerformanceTableOneClassOfAfterTaxShown
      contextRef="S000004081"
      id="e0298725-3da5-494d-a03d-088ea3d1aafa">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;After-tax returns are shown for Class III shares only; after-tax returns for other classes &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;will vary.&lt;/span&gt;</oef:PerformanceTableOneClassOfAfterTaxShown>
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      contextRef="S000004081"
      id="x_980e315f-d6b7-4ad5-afec-3dfc14ef955a">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;www.gmo.com&lt;/span&gt;</oef:PerformanceAvailabilityWebSiteAddress>
    <oef:PerformancePastDoesNotIndicateFuture
      contextRef="S000004081"
      id="x_51fa63c5-a2b6-4d4f-b4d5-ec3fbfa6a965">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;Past performance (before and after taxes) is not an indication of future performance.&lt;/span&gt;</oef:PerformancePastDoesNotIndicateFuture>
    <oef:BarChartHeading
      contextRef="S000004081"
      id="x_6e82ee6f-0b16-4b7c-991b-11a41b4240c2">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-weight:bold;"&gt;Annual Total Returns/Class III Shares&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:6.5pt;font-weight:bold;position:relative;top:-2.75pt;"&gt;1&lt;/span&gt; &lt;br/&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;Years Ending December 31&lt;/span&gt;</oef:BarChartHeading>
    <oef:BarChartClosingTextBlock
      contextRef="S000004081"
      id="cf37442d-8165-4364-8ab7-60cbf81b75ec">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;Highest Quarter:&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;19.81%&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;-sec-ix-hidden:b2e4fd13-9f6d-468e-a51b-94c0bd6b6b50"&gt;2Q 2020&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;Lowest Quarter:&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;-21.15%&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;-sec-ix-hidden:x_03c0c860-ae06-44ae-a518-14db02830ca4"&gt;1Q 2020&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;Year-to-Date:&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;-5.68%&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;As of&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;3/31/2025&lt;/span&gt;</oef:BarChartClosingTextBlock>
    <oef:HighestQuarterlyReturnLabel
      contextRef="S000004081_C000011423"
      id="x_238707e9-0677-4f9a-b147-246c61a43d2e">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;Highest Quarter:&lt;/span&gt;</oef:HighestQuarterlyReturnLabel>
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      contextRef="S000004081_C000011423"
      decimals="4"
      id="x_4e4ea19c-ca06-43a7-b8a1-7ad8f587b298"
      unitRef="pure">0.1981</oef:BarChartHighestQuarterlyReturn>
    <oef:LowestQuarterlyReturnLabel
      contextRef="S000004081_C000011423"
      id="cd3af3a9-6eb8-4a82-bdba-e39276e08e1d">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;Lowest Quarter:&lt;/span&gt;</oef:LowestQuarterlyReturnLabel>
    <oef:BarChartLowestQuarterlyReturn
      contextRef="S000004081_C000011423"
      decimals="4"
      id="x_6b964579-aa48-481a-a3ca-9c3a8e8a742e"
      unitRef="pure">-0.2115</oef:BarChartLowestQuarterlyReturn>
    <oef:YearToDateReturnLabel
      contextRef="S000004081_C000011423"
      id="e4573434-ccd2-4287-a244-e35bb34b1bf3">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;Year-to-Date:&lt;/span&gt;</oef:YearToDateReturnLabel>
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      contextRef="S000004081_C000011423"
      decimals="4"
      id="af15f097-b513-434d-b586-e730161009d1"
      unitRef="pure">-0.0568</oef:BarChartYearToDateReturn>
    <oef:BarChartYearToDateReturnDate
      contextRef="S000004081_C000011423"
      id="ad07faeb-15e7-49a9-a5e5-f8aec13adb60">2025-03-31</oef:BarChartYearToDateReturnDate>
    <oef:PerformanceTableHeading
      contextRef="S000004081"
      id="d09f9152-dd86-4f87-be39-4eb5800db115">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-weight:bold;"&gt;Average Annual Total Returns&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:6.5pt;font-weight:bold;position:relative;top:-2.75pt;"&gt;1&lt;/span&gt; &lt;br/&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;Periods Ending December 31, 2024&lt;/span&gt;</oef:PerformanceTableHeading>
    <oef:PerfInceptionDate
      contextRef="C000011423"
      id="x_10f17351-91cf-4ec8-9953-89127448cbcf">1985-09-18</oef:PerfInceptionDate>
    <oef:AvgAnnlRtrPct
      contextRef="C000011423_01Jan2024_31Dec2024"
      decimals="4"
      id="x_8d9e6882-2b55-4742-a7d4-f2e49fe93fd4"
      unitRef="pure">0.2092</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000011423_01Jan2020_31Dec2024"
      decimals="4"
      id="x_3faf8268-cfb1-4d00-a91e-5e8fbee7350b"
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    <oef:PerfInceptionDate
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      id="x_97152c2b-5e64-404c-b38e-dc422f4e6215">2003-06-30</oef:PerfInceptionDate>
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      id="c20b7840-ff67-48af-af46-01fa4465f496"
      unitRef="pure">0.1187</oef:AvgAnnlRtrPct>
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    <oef:ObjectiveHeading
      contextRef="S000079720"
      id="x_8a98c1be-e556-43e0-aea9-95659ab5e530">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-weight:bold;"&gt;Investment objective&lt;/span&gt;</oef:ObjectiveHeading>
    <oef:ObjectivePrimaryTextBlock
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      id="ea2fd99e-783c-428b-b0e9-67bb2bebb5d0">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;Total return.&lt;/span&gt;</oef:ObjectivePrimaryTextBlock>
    <oef:ExpenseHeading
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      id="a50fa293-09cf-4ea3-b8fb-ff3cb7d4e409">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-weight:bold;"&gt;Fees and expenses&lt;/span&gt;</oef:ExpenseHeading>
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      contextRef="S000079720"
      id="b5374249-a287-4af2-a4a4-0635d79b6d8f">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;margin-left:3.76%;"&gt;The table below describes the fees and expenses that you may bear for each class of shares if you buy, hold, and sell shares of the &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;Fund. You may pay other fees, such as brokerage commissions and other fees to financial intermediaries, which are not reflected in the table and example below.&lt;/span&gt;</oef:ExpenseNarrativeTextBlock>
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      id="aae6845d-5dd5-468b-9083-837a2dc528b0">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-weight:bold;"&gt;Annual Fund operating expenses &lt;/span&gt; &lt;br/&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;(expenses that you bear each year as a percentage of the value of your investment)&lt;/span&gt;</oef:OperatingExpensesCaption>
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      decimals="4"
      id="x_85604c6c-29d0-40d5-ae8d-4ce276f5c714"
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      id="x_09323422-7708-4b42-9d86-2ecf6569c0b9"
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      id="x_14a116a0-e522-4568-aa9b-9f2a1333cfc9"
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      contextRef="S000079720_C000241011"
      decimals="5"
      id="aead53fc-d173-49a5-98a9-41d2878790fd"
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      contextRef="S000079720_C000241009"
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      id="b26cfcb8-62b6-4c35-a1d4-85cb30525227"
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      contextRef="S000079720_C000241012"
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      id="x_21c9a667-86c8-47ff-aa07-92689dcc61d2"
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      id="x_6259338b-457b-4032-a69f-ee44e00cc69b"
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      id="x_10279dee-ac1d-40fb-a14e-0d0b531435c7"
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    <oef:ExpensesOverAssets
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      id="x_882e35fb-536a-4a20-8f79-62930a4ca60d"
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    <oef:ExpensesOverAssets
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      id="c27b6702-c4ed-497c-b630-d38f4dfc929d"
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    <oef:ExpensesOverAssets
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      id="x_906450a2-936e-4a9b-a84a-21b3029594e9"
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    <oef:ExpensesOverAssets
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      id="x_2f9e3fe6-ea3c-4d0f-b901-0be6c531c460"
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    <oef:FeeWaiverOrReimbursementOverAssets
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      id="x_249aef13-023f-4a1d-b84e-4758cb3290b4"
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    <oef:NetExpensesOverAssets
      contextRef="S000079720_C000241007"
      decimals="4"
      id="beb60b74-38e4-46bb-9813-38f3462bfef9"
      unitRef="pure">0.0049</oef:NetExpensesOverAssets>
    <oef:NetExpensesOverAssets
      contextRef="S000079720_C000241008"
      decimals="4"
      id="x_6713439b-8f8c-465d-88d0-5e03ef7d8682"
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    <oef:NetExpensesOverAssets
      contextRef="S000079720_C000241010"
      decimals="4"
      id="x_2dc70dde-2ebf-433c-bc9a-705cfca55dfc"
      unitRef="pure">0.0042</oef:NetExpensesOverAssets>
    <oef:NetExpensesOverAssets
      contextRef="S000079720_C000241011"
      decimals="4"
      id="x_41832970-bb3a-4989-a128-6b0e14580c05"
      unitRef="pure">0.0039</oef:NetExpensesOverAssets>
    <oef:NetExpensesOverAssets
      contextRef="S000079720_C000241009"
      decimals="4"
      id="x_3ba05107-942d-42db-9486-53a1e7600926"
      unitRef="pure">0.0049</oef:NetExpensesOverAssets>
    <oef:NetExpensesOverAssets
      contextRef="S000079720_C000241012"
      decimals="4"
      id="x_431f2d1e-bb1e-412e-a1b9-4d5fb6db7629"
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    <oef:FeeWaiverOrReimbursementOverAssetsDateOfTermination
      contextRef="S000079720"
      id="x_555a1b8b-130f-4edc-b88f-ce858b23fa34">&lt;span style="color:#000000;font-family:Times New Roman;font-size:8pt;font-style:italic;"&gt;June 30, 2026&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:8pt;font-style:italic;"&gt;June 30, 2026&lt;/span&gt;</oef:FeeWaiverOrReimbursementOverAssetsDateOfTermination>
    <oef:ExpenseExampleHeading
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      id="bcc6403f-ef49-4234-98f4-3a8299155d2b">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-weight:bold;"&gt;Example&lt;/span&gt;</oef:ExpenseExampleHeading>
    <oef:ExpenseExampleNarrativeTextBlock
      contextRef="S000079720"
      id="x_6b17338b-f831-4b86-8bef-1dc93decf45a">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;margin-left:3.76%;"&gt;This example is intended to help you compare the cost of investing in the Fund with the cost of investing in other funds. The &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;example assumes that you invest $10,000 in the Fund for the time periods indicated, regardless of whether or not you redeem your shares at the end of such periods. The example also assumes that your investment has a 5% return each year and that the Fund&#x2019;s operating expenses remain the same as those shown in the table. The one year amounts shown reflect the expense reimbursement and waiver noted in the expense table. Although your actual costs may be higher or lower, based on these assumptions your costs would be:&lt;/span&gt;</oef:ExpenseExampleNarrativeTextBlock>
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      id="x_8bbd4ec0-4797-4e50-b819-311e3f29fa5a"
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      contextRef="S000079720_C000241007"
      decimals="INF"
      id="x_00c210b2-c1d4-4dbb-ad63-2477b5ee8913"
      unitRef="USD">166</oef:ExpenseExampleYear03>
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      decimals="INF"
      id="x_2ed289f4-aa81-4b9d-a1c6-dcac6cb11c01"
      unitRef="USD">292</oef:ExpenseExampleYear05>
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      decimals="INF"
      id="x_0a582350-0690-4622-9471-3b727f32b22a"
      unitRef="USD">661</oef:ExpenseExampleYear10>
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      contextRef="S000079720_C000241008"
      decimals="INF"
      id="x_852c4531-58a7-477b-b636-c4e2e2506e61"
      unitRef="USD">45</oef:ExpenseExampleYear01>
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      contextRef="S000079720_C000241008"
      decimals="INF"
      id="x_1257d401-aa82-4895-82a2-b91ad695f782"
      unitRef="USD">150</oef:ExpenseExampleYear03>
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      contextRef="S000079720_C000241008"
      decimals="INF"
      id="x_0713a9e4-40a6-4e33-aa8a-ae71bfbb343d"
      unitRef="USD">265</oef:ExpenseExampleYear05>
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      decimals="INF"
      id="x_434a4cb6-8a6e-41c3-a5f8-4b16f5bf9160"
      unitRef="USD">600</oef:ExpenseExampleYear10>
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      contextRef="S000079720_C000241010"
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      id="d236313a-7a57-4c76-8006-f0dd840f7a4b"
      unitRef="USD">43</oef:ExpenseExampleYear01>
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      id="dcc2e3e0-0392-45a0-b634-11e4c1c3b386"
      unitRef="USD">144</oef:ExpenseExampleYear03>
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      contextRef="S000079720_C000241010"
      decimals="INF"
      id="da2756fb-add2-4813-a2f2-f12f0c8d0156"
      unitRef="USD">254</oef:ExpenseExampleYear05>
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      contextRef="S000079720_C000241010"
      decimals="INF"
      id="x_07b635e5-c523-407a-b9cf-0f4885b59bb8"
      unitRef="USD">575</oef:ExpenseExampleYear10>
    <oef:ExpenseExampleYear01
      contextRef="S000079720_C000241011"
      decimals="INF"
      id="f5456075-124d-4b3d-b4cf-cc45b85a4f87"
      unitRef="USD">40</oef:ExpenseExampleYear01>
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      contextRef="S000079720_C000241011"
      decimals="INF"
      id="x_6232f3ab-f051-4eb2-af83-86798af99b02"
      unitRef="USD">134</oef:ExpenseExampleYear03>
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      contextRef="S000079720_C000241011"
      decimals="INF"
      id="x_3327cf53-b631-4914-bd28-0b96fd88d249"
      unitRef="USD">237</oef:ExpenseExampleYear05>
    <oef:ExpenseExampleYear10
      contextRef="S000079720_C000241011"
      decimals="INF"
      id="x_05ea4f74-01f1-4850-baba-a0f37a4d6f86"
      unitRef="USD">538</oef:ExpenseExampleYear10>
    <oef:ExpenseExampleYear01
      contextRef="S000079720_C000241009"
      decimals="INF"
      id="x_24d9b13a-7b16-4e38-b350-b8bce2618bba"
      unitRef="USD">50</oef:ExpenseExampleYear01>
    <oef:ExpenseExampleYear03
      contextRef="S000079720_C000241009"
      decimals="INF"
      id="a290fef2-eb91-4d1d-bff8-b10083d395f3"
      unitRef="USD">166</oef:ExpenseExampleYear03>
    <oef:ExpenseExampleYear05
      contextRef="S000079720_C000241009"
      decimals="INF"
      id="x_7b782afe-2cbb-43c2-b9f2-01c9c65f1692"
      unitRef="USD">292</oef:ExpenseExampleYear05>
    <oef:ExpenseExampleYear10
      contextRef="S000079720_C000241009"
      decimals="INF"
      id="x_10627dc2-5fee-4972-b278-8695ed43d612"
      unitRef="USD">661</oef:ExpenseExampleYear10>
    <oef:ExpenseExampleYear01
      contextRef="S000079720_C000241012"
      decimals="INF"
      id="b6ffc6c2-105e-4710-902c-0c0eafcbac9c"
      unitRef="USD">62</oef:ExpenseExampleYear01>
    <oef:ExpenseExampleYear03
      contextRef="S000079720_C000241012"
      decimals="INF"
      id="x_11e56ce2-45c1-4a52-a185-860516d45b07"
      unitRef="USD">204</oef:ExpenseExampleYear03>
    <oef:ExpenseExampleYear05
      contextRef="S000079720_C000241012"
      decimals="INF"
      id="a8d2c47c-c80e-4f42-97d3-9d61503f0f0e"
      unitRef="USD">358</oef:ExpenseExampleYear05>
    <oef:ExpenseExampleYear10
      contextRef="S000079720_C000241012"
      decimals="INF"
      id="x_2c2383e7-c1ef-4120-af02-b6bfe175e23e"
      unitRef="USD">807</oef:ExpenseExampleYear10>
    <oef:PortfolioTurnoverHeading
      contextRef="S000079720"
      id="b5981aff-7e14-4fe0-a632-f68b098c74f6">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-weight:bold;"&gt;Portfolio turnover&lt;/span&gt;</oef:PortfolioTurnoverHeading>
    <oef:PortfolioTurnoverTextBlock
      contextRef="S000079720"
      id="x_23796250-2836-49c2-8f47-8c9eb5ee34c9">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;margin-left:3.76%;"&gt;The Fund pays transaction costs, such as commissions, when it buys and sells securities. A higher portfolio turnover rate may &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;result in higher transaction costs and, for holders of Fund shares subject to U.S. taxes, higher income taxes. These transaction costs, which are not reflected in Annual Fund operating expenses or in the Example, affect the Fund&#x2019;s performance.&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; During its fiscal year &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;ended February 28, 2025, the Fund&#x2019;s portfolio turnover rate (excluding short-term investments) was &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;72&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;% of the average value of its portfolio securities.&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; That portfolio turnover rate includes investments in U.S. Treasury Fund, which the Fund uses as a short-term &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;investment vehicle for cash management. The Fund&#x2019;s portfolio turnover rate during its fiscal year ended February 28, 2025, excluding transactions in U.S. Treasury Fund and other short-term investments, was 65% of the average value of its portfolio securities.&lt;/span&gt;</oef:PortfolioTurnoverTextBlock>
    <oef:PortfolioTurnoverRate
      contextRef="S000079720"
      decimals="4"
      id="b2962f72-34e1-4012-bd88-fab95c93f33d"
      unitRef="pure">0.72</oef:PortfolioTurnoverRate>
    <oef:StrategyHeading
      contextRef="S000079720"
      id="a01facdf-5dae-4daf-a259-8518d041e7da">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-weight:bold;"&gt;Principal investment strategies&lt;/span&gt;</oef:StrategyHeading>
    <oef:StrategyNarrativeTextBlock
      contextRef="S000079720"
      id="bc7f92aa-3f02-4339-9175-904467ff89a1">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;margin-left:3.76%;"&gt;GMO seeks to achieve the Fund&#x2019;s investment objective by investing the Fund&#x2019;s assets primarily in securities traded in U.S. equity &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;markets. GMO selects the securities the Fund buys and sells based on its evaluation of companies&#x2019; published financial information, securities&#x2019; prices, equity and other markets, the overall global economy, and governmental policies. The Fund seeks to capitalize opportunistically on what GMO believes to be market dislocations within the U.S. equity markets.&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;margin-left:3.76%;"&gt;In selecting securities for the Fund, GMO uses a combination of proprietary quantitative investment methods to identify U.S. &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;equities GMO believes have positive return potential relative to other U.S. equities. A key component of the process is GMO&#x2019;s proprietary methodology for assessing values of company tangible and intangible assets and generating equity return forecasts, which are then incorporated into relative valuation models. Some of these methods evaluate individual companies or groups of companies based on the ratio of their security price to historical financial information and forecasted financial information, such as return on invested capital, profitability, cash flow and earnings, and a comparison of these ratios to current and historical averages. Other methods focus on patterns of information, such as price movement or volatility of an asset class, security, or market, and macroeconomic factors. In constructing the Fund&#x2019;s portfolio, GMO also considers position size, sector and industry exposure, market capitalization, liquidity, and transaction costs. GMO also may consider ESG (environmental, social, and governance) criteria. For example, GMO generally avoids investing the Fund&#x2019;s assets in companies engaged in the manufacture, supply, or distribution of cluster munitions, as well as companies primarily involved in the mining and production of thermal coal. At times, the Fund expects to have substantial exposure to a single asset class, industry, sector and companies with similar market capitalizations. The Fund may invest in securities of companies of any market capitalization. The factors GMO considers and investment methods GMO uses can change over time.&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;margin-left:3.76%;"&gt;As an alternative to investing directly in equities, the Fund may invest in exchange-traded and over-the-counter (OTC) derivatives &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;and exchange-traded funds (ETFs). The Fund also may invest in derivatives and ETFs in an attempt to obtain or adjust elements of its long or short investment exposure. Derivatives used may include futures, options, and swap contracts. In addition, the Fund may lend its portfolio securities.&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;margin-left:3.76%;"&gt;Under normal circumstances, the Fund invests directly and indirectly (e.g., through underlying funds or derivatives) at least 80% of &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;its assets in companies tied economically to the United States (see &#x201c;Name Policies&#x201d;). &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;margin-left:3.76%;"&gt;The Fund also may invest in U.S. Treasury Fund, in money market funds unaffiliated with GMO, and directly in the types of &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;investments typically held by money market funds.&lt;/span&gt;</oef:StrategyNarrativeTextBlock>
    <oef:RiskTextBlock
      contextRef="S000079720_RiskLoseMoneyMember"
      id="fa9e8704-8bc6-4ebc-919b-24a4512fecbb">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;Many factors can affect this value, and you may lose money by investing in the Fund.&lt;/span&gt;</oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="S000079720_RiskNotInsuredDepositoryInstitutionMember"
      id="x_5bb8fc76-e620-41c2-9a86-d933f9ae5f79">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;An investment in the Fund is not a bank deposit and is not insured or guaranteed by the FDIC or &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;any government agency.&lt;/span&gt;</oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="S000079720_MarketRiskEquitiesRiskMember"
      id="db2c1758-2570-4885-a282-59f3bcb30c98">&lt;span style="color:#000000;font-family:Times New Roman;font-size:8pt;"&gt;&#x25cf;&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-style:italic;"&gt;Market Risk &#x2013; Equities &#x2013; &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;The market price of an equity in the Fund&#x2019;s portfolio may decline due to factors affecting the issuer or its industry or the economy and equity markets generally. If the Fund purchases an equity for less than its fundamental fair (or intrinsic) value as assessed by GMO, the Fund runs the risk that the market price of the equity will not appreciate or will decline (for example, if GMO&#x2019;s assessment proves to be incorrect or the market fails to recognize the equity&#x2019;s intrinsic value). The Fund also may purchase equities that typically trade at higher multiples of current earnings than other securities, and the market prices of these equities often are more sensitive to changes in future earnings expectations and interest rates than the market prices of equities trading at lower multiples. Declines in stock market prices generally are likely to reduce the net asset value of the Fund&#x2019;s shares.&lt;/span&gt;</oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="S000079720_ManagementandOperationalRiskMember"
      id="bfdf2463-68f5-40a0-b066-6e0d2e2f8d38">&lt;span style="color:#000000;font-family:Times New Roman;font-size:8pt;"&gt;&#x25cf;&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-style:italic;"&gt;Management and Operational Risk&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; &#x2013; The Fund runs the risk that GMO&#x2019;s investment techniques will fail to produce intended results.&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;GMO uses quantitative models as part of its investment process. GMO&#x2019;s models may not accurately predict future market movements. In addition, GMO&#x2019;s models rely on assumptions and data that are subject to limitations (e.g., inaccuracies, staleness) that could adversely affect their predictive value.&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; The Fund also runs the risk that GMO&#x2019;s assessment of an investment, including a &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;security&#x2019;s fundamental fair (or intrinsic) value, is wrong or that deficiencies in GMO&#x2019;s or another service provider&#x2019;s internal systems or controls will cause losses for the Fund or impair Fund operations.&lt;/span&gt;</oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="S000079720_MarketDisruptionandGeopoliticalRiskMember"
      id="f3b0ddeb-ce3b-417a-8d85-24f7cb983076">&lt;span style="color:#000000;font-family:Times New Roman;font-size:8pt;"&gt;&#x25cf;&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-style:italic;"&gt;Market Disruption and Geopolitical Risk&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; &#x2013; Geopolitical and other events (e.g., wars, pandemics, sanctions, terrorism, diplomatic tensions, dramatic changes in regulatory and/or foreign policy, cyberattacks, and rapid technological developments such as artificial intelligence) often disrupt securities markets and adversely affect the general economy or particular economies and markets. Those events, as well as other changes in non-U.S. and U.S. economic and political conditions, could exacerbate other risks or otherwise reduce the value of the Fund&#x2019;s investments.&lt;/span&gt;</oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="S000079720_FocusedInvestmentRiskMember"
      id="x_2a6b1f82-50c6-4fe2-b09d-782b085a4f17">&lt;span style="color:#000000;font-family:Times New Roman;font-size:8pt;"&gt;&#x25cf;&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-style:italic;"&gt;Focused Investment Risk&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; &#x2013; Investments in countries, regions, asset classes, sectors, industries, currencies, or issuers that are subject to the same or similar risk factors and investments whose market prices are closely correlated are subject to higher overall risk than investments that are more diversified or whose market prices are not as closely correlated.&lt;/span&gt;</oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="S000079720_SmallerCompanyRiskMember"
      id="b816f489-be40-49e0-a1c9-7a30bb8e9aa7">&lt;span style="color:#000000;font-family:Times New Roman;font-size:8pt;"&gt;&#x25cf;&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-style:italic;"&gt;Smaller Company Risk&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; &#x2013; Smaller companies may have limited product lines, markets, or financial resources, lack the competitive strength of larger companies, have less experienced managers or depend on a few key employees. The securities of companies with smaller market capitalizations often are less widely held and trade less frequently and in lesser quantities, and their market prices often fluctuate more, than the securities of companies with larger market capitalizations.&lt;/span&gt;</oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="S000079720_IlliquidityRiskMember"
      id="e741d828-7818-4fcd-8675-5720a6477c37">&lt;span style="color:#000000;font-family:Times New Roman;font-size:8pt;"&gt;&#x25cf;&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-style:italic;"&gt;Illiquidity Risk&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; &#x2013; Low trading volume, lack of a market maker, large position size, or legal restrictions increase the risk that the Fund or an underlying fund is limited or prevented from selling particular securities or closing derivative positions at desirable prices at a particular time or at all.&lt;/span&gt;</oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="S000079720_ValueInvestingRiskMember"
      id="x_049f2ca0-3af0-4066-95c4-89f6241358fb">&lt;span style="color:#000000;font-family:Times New Roman;font-size:8pt;"&gt;&#x25cf;&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-style:italic;"&gt;Value Investing Risk&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; &#x2013; Issuers whose securities GMO believes are undervalued may not realize their business potential, may never be recognized by the market as being undervalued and/or may be appropriately priced notwithstanding GMO&#x2019;s assessment. These and other factors may cause the price of value stocks to decline, resulting in losses to the Fund.&lt;/span&gt;</oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="S000079720_DerivativesandShortSalesRiskMember"
      id="fd5a02c6-a1de-4147-9a3b-26635c8d18b2">&lt;span style="color:#000000;font-family:Times New Roman;font-size:8pt;"&gt;&#x25cf;&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-style:italic;"&gt;Derivatives and Short Sales Risk&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; &#x2013; The use of derivatives involves the risk that their value may not change as expected relative to changes in the value of the underlying assets, pools of assets, rates, currencies or indices. Derivatives also present other risks, including market risk, illiquidity risk, currency risk, credit risk, leveraging risk, commodities risk and counterparty risk. The market price of an option is affected by many factors, including changes in the market prices or dividend rates of underlying securities (or in the case of indices, the securities in such indices); the time remaining before expiration; changes in interest rates or exchange rates; and changes in the actual or perceived volatility of the relevant index or underlying securities. The Fund typically creates short investment exposure by selling securities short or by taking a derivative position in which the value of the derivative moves in the opposite direction from the price of an underlying asset, pool of assets, rate, currency or index. Specifically, the net asset value of the Fund&#x2019;s shares will be adversely affected if the securities or other assets that are the subject of the Fund&#x2019;s short exposures appreciate in value. The risk of loss associated with derivatives that provide short investment exposure and short sales of securities is theoretically unlimited.&lt;/span&gt;</oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="S000079720_CounterpartyRiskMember"
      id="x_2541461b-54a4-43ff-8b26-719b438ff301">&lt;span style="color:#000000;font-family:Times New Roman;font-size:8pt;"&gt;&#x25cf;&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-style:italic;"&gt;Counterparty Risk&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; &#x2013; The Fund runs the risk that the counterparty to a derivatives contract or a clearing member used by the Fund to hold a cleared derivatives contract is unable or unwilling to make timely settlement payments, return the Fund&#x2019;s collateral or otherwise honor its obligations.&lt;/span&gt;</oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="S000079720_LeveragingRiskMember"
      id="x_910013d4-51d3-41a0-9dc3-421aea327f29">&lt;span style="color:#000000;font-family:Times New Roman;font-size:8pt;"&gt;&#x25cf;&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-style:italic;"&gt;Leveraging Risk&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; &#x2013; The use of derivatives, short sales and securities lending can create leverage. Leverage increases the Fund&#x2019;s losses when the value of its investments (including derivatives) declines. In addition, the Fund&#x2019;s portfolio will be leveraged if it exercises its right to delay payment on a redemption and the value of the Fund&#x2019;s assets declines between the time a redemption request is treated as being received by the Fund and the time the Fund liquidates assets to fund that redemption.&lt;/span&gt;</oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="S000079720_LargeTransactionsRiskMember"
      id="b32ea80c-6e9e-4afd-a88f-6e2857824233">&lt;span style="color:#000000;font-family:Times New Roman;font-size:8pt;"&gt;&#x25cf;&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-style:italic;"&gt;Large Transactions Risk&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; &#x2013; To the extent that a large number of shares of the Fund is held by a single shareholder (e.g., an institutional investor or another GMO Fund) or a group of shareholders with a common investment strategy (e.g., GMO asset allocation accounts), the Fund is subject to the risk that a redemption by (or caused by) that shareholder or group will require the Fund to sell investments at disadvantageous prices, disrupt the Fund&#x2019;s operations, lead to temporary overexposure to the Fund&#x2019;s intended investment program or force the Fund&#x2019;s liquidation. The Fund also may be subject to these effects when a number of shareholders collectively redeem or sell a large amount of Fund shares.&lt;/span&gt;</oef:RiskTextBlock>
    <oef:BarChartAndPerformanceTableHeading
      contextRef="S000079720"
      id="c8cd623a-9bb5-4757-b94e-b71abc573326">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-weight:bold;"&gt;Performance&lt;/span&gt;</oef:BarChartAndPerformanceTableHeading>
    <oef:PerformanceNarrativeTextBlock
      contextRef="S000079720"
      id="x_6ba684fd-c9b6-4678-b14e-a208c6240798">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;margin-left:3.76%;"&gt;The bar chart and table below provide some indication of the risks of investing in the Fund by showing changes in the Fund&#x2019;s &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;annual total returns from year to year for the periods indicated and by comparing the Fund&#x2019;s average annual total returns for different calendar periods with those of the MSCI USA Value Index and a broad-based securities market index.&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; Share classes not shown would &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;have substantially similar annual returns to those below because all share classes invest in the same portfolio of securities. Annual returns vary among share classes to the extent that they bear different expenses. Share classes that bear higher expenses than the share classes shown below would have lower returns. &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;After-tax returns are calculated using the historical highest individual federal marginal &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;income tax rates and do not reflect the impact of state and local taxes.&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; Actual after-tax returns depend on your tax situation and may &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;differ from those shown. After-tax returns shown are not relevant if you are tax-exempt or if you hold your Fund shares through tax-advantaged arrangements (such as a 401(k) plan or individual retirement account). &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;After-tax returns are shown for Class VI shares only; &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;after-tax returns for other classes will vary.&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; Updated performance information for the Fund is available at &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;www.gmo.com&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;. &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;Past performance (before and after taxes) is not an indication of future performance.&lt;/span&gt;</oef:PerformanceNarrativeTextBlock>
    <oef:PerformanceInformationIllustratesVariabilityOfReturns
      contextRef="S000079720"
      id="x_4f686386-fd4f-497e-a51d-6f33750d6702">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;margin-left:3.76%;"&gt;The bar chart and table below provide some indication of the risks of investing in the Fund by showing changes in the Fund&#x2019;s &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;annual total returns from year to year for the periods indicated and by comparing the Fund&#x2019;s average annual total returns for different calendar periods with those of the MSCI USA Value Index and a broad-based securities market index.&lt;/span&gt;</oef:PerformanceInformationIllustratesVariabilityOfReturns>
    <oef:PerformanceTableUsesHighestFederalRate
      contextRef="S000079720"
      id="x_849a93b2-889a-4dd8-9363-a5143298ded3">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;After-tax returns are calculated using the historical highest individual federal marginal &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;income tax rates and do not reflect the impact of state and local taxes.&lt;/span&gt;</oef:PerformanceTableUsesHighestFederalRate>
    <oef:PerformanceTableNotRelevantToTaxDeferred
      contextRef="S000079720"
      id="x_25deb91c-137f-490d-a4b4-5c566378a68b">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; Actual after-tax returns depend on your tax situation and may &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;differ from those shown. After-tax returns shown are not relevant if you are tax-exempt or if you hold your Fund shares through tax-advantaged arrangements (such as a 401(k) plan or individual retirement account). &lt;/span&gt;</oef:PerformanceTableNotRelevantToTaxDeferred>
    <oef:PerformanceTableOneClassOfAfterTaxShown
      contextRef="S000079720"
      id="b65e197a-bb9c-4299-bbfa-a3b012eae4ce">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;After-tax returns are shown for Class VI shares only; &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;after-tax returns for other classes will vary.&lt;/span&gt;</oef:PerformanceTableOneClassOfAfterTaxShown>
    <oef:PerformanceAvailabilityWebSiteAddress
      contextRef="S000079720"
      id="x_0d61dc7a-6e34-41fc-88d6-77fc52592e28">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;www.gmo.com&lt;/span&gt;</oef:PerformanceAvailabilityWebSiteAddress>
    <oef:PerformancePastDoesNotIndicateFuture
      contextRef="S000079720"
      id="bac40e4f-78b2-45ab-800c-6ad229b6ced4">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;Past performance (before and after taxes) is not an indication of future performance.&lt;/span&gt;</oef:PerformancePastDoesNotIndicateFuture>
    <oef:BarChartHeading
      contextRef="S000079720"
      id="x_2c1525e8-eefa-4b04-9b01-e5f29f2b969f">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-weight:bold;"&gt;Annual Total Returns/Class VI Shares&lt;/span&gt; &lt;br/&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;Years Ending December 31&lt;/span&gt;</oef:BarChartHeading>
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    <oef:ObjectiveHeading
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      id="x_97269c5d-94ef-40eb-a69e-016989cc4302">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-weight:bold;"&gt;Fees and expenses&lt;/span&gt;</oef:ExpenseHeading>
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      id="x_712bc5f6-b4a2-4b67-8791-46adb4238d52">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;margin-left:3.76%;"&gt;The table below describes the fees and expenses that you may bear for each class of shares if you buy, hold, and sell shares of the &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;Fund. You may pay other fees, such as brokerage commissions and other fees to financial intermediaries, which are not reflected in the table and example below.&lt;/span&gt;</oef:ExpenseNarrativeTextBlock>
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      contextRef="S000065871"
      id="x_30e0600b-4df2-485f-9413-c045a02b919e">&lt;span style="color:#000000;font-family:Times New Roman;font-size:8pt;font-style:italic;"&gt;June 30, 2026&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:8pt;font-style:italic;"&gt;June 30, 2026&lt;/span&gt;</oef:FeeWaiverOrReimbursementOverAssetsDateOfTermination>
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      id="f5e44e4f-c1e7-44bb-92ec-a40967fe12d6">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-weight:bold;"&gt;Example&lt;/span&gt;</oef:ExpenseExampleHeading>
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      id="x_6b7010ee-59dc-447c-afe4-f8f3deeea35a">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;margin-left:3.76%;"&gt;This example is intended to help you compare the cost of investing in the Fund with the cost of investing in other funds. The &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;example assumes that you invest $10,000 in the Fund for the time periods indicated, regardless of whether or not you redeem your shares at the end of such periods. The example also assumes that your investment has a 5% return each year and that the Fund&#x2019;s operating expenses remain the same as those shown in the table. The one year amounts shown reflect the expense reimbursement and waiver noted in the expense table. Although your actual costs may be higher or lower, based on these assumptions your costs would be:&lt;/span&gt;</oef:ExpenseExampleNarrativeTextBlock>
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      decimals="INF"
      id="b272c633-ff56-471c-8f46-b2031b2c09b7"
      unitRef="USD">58</oef:ExpenseExampleYear01>
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      decimals="INF"
      id="cb14aa49-d683-45f0-89ae-fad0a72dcefc"
      unitRef="USD">226</oef:ExpenseExampleYear03>
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      contextRef="S000065871_C000212814"
      decimals="INF"
      id="x_1a59a3dc-c1b2-4718-9711-d1392cfad181"
      unitRef="USD">408</oef:ExpenseExampleYear05>
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      decimals="INF"
      id="x_30d69db3-6e14-43dd-8648-07818fb63994"
      unitRef="USD">935</oef:ExpenseExampleYear10>
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      contextRef="S000065871_C000212813"
      decimals="INF"
      id="x_5a456d02-601c-4420-8d06-46a006156280"
      unitRef="USD">53</oef:ExpenseExampleYear01>
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      contextRef="S000065871_C000212813"
      decimals="INF"
      id="x_8de2095c-3f4e-4068-9696-b5fa80ae731e"
      unitRef="USD">210</oef:ExpenseExampleYear03>
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      decimals="INF"
      id="x_28432474-24f7-4766-b543-d32836a73e00"
      unitRef="USD">381</oef:ExpenseExampleYear05>
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      contextRef="S000065871_C000212813"
      decimals="INF"
      id="ba06b385-76ed-428f-a2a8-cb9ead0d53d1"
      unitRef="USD">876</oef:ExpenseExampleYear10>
    <oef:ExpenseExampleYear01
      contextRef="S000065871_C000212811"
      decimals="INF"
      id="x_2c138b5b-a535-499e-8d10-fa3abee3b3df"
      unitRef="USD">52</oef:ExpenseExampleYear01>
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      contextRef="S000065871_C000212811"
      decimals="INF"
      id="x_133ce15f-2e4f-451d-aebe-3753a2a9ffc9"
      unitRef="USD">207</oef:ExpenseExampleYear03>
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      decimals="INF"
      id="x_65f55675-ac36-4ba0-aef4-c072ccc05dde"
      unitRef="USD">375</oef:ExpenseExampleYear05>
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      contextRef="S000065871_C000212811"
      decimals="INF"
      id="ba708e10-d113-47e1-8e4e-c408e9fcf721"
      unitRef="USD">864</oef:ExpenseExampleYear10>
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      contextRef="S000065871_C000212810"
      decimals="INF"
      id="e54abc61-0767-4902-b7a8-65add4dc2cca"
      unitRef="USD">49</oef:ExpenseExampleYear01>
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      contextRef="S000065871_C000212810"
      decimals="INF"
      id="x_7028be54-1bb5-407b-a55a-a17b945110b2"
      unitRef="USD">197</oef:ExpenseExampleYear03>
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      contextRef="S000065871_C000212810"
      decimals="INF"
      id="b4abb51a-9549-4641-ae60-f784f9fdf3e3"
      unitRef="USD">359</oef:ExpenseExampleYear05>
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      contextRef="S000065871_C000212810"
      decimals="INF"
      id="x_59fc5e41-b563-4623-a403-82c30f614d5e"
      unitRef="USD">828</oef:ExpenseExampleYear10>
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      contextRef="S000065871_C000212815"
      decimals="INF"
      id="b3358a6f-a4c8-49da-a909-c9b840100962"
      unitRef="USD">58</oef:ExpenseExampleYear01>
    <oef:ExpenseExampleYear03
      contextRef="S000065871_C000212815"
      decimals="INF"
      id="x_608c5840-3089-4512-995c-3a12fa76b5e3"
      unitRef="USD">226</oef:ExpenseExampleYear03>
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      contextRef="S000065871_C000212815"
      decimals="INF"
      id="e6842441-4a43-4fd2-8bd1-7bf201cbe46f"
      unitRef="USD">408</oef:ExpenseExampleYear05>
    <oef:ExpenseExampleYear10
      contextRef="S000065871_C000212815"
      decimals="INF"
      id="x_337c80e6-d589-479f-9506-02a417ca651a"
      unitRef="USD">935</oef:ExpenseExampleYear10>
    <oef:ExpenseExampleYear01
      contextRef="S000065871_C000212812"
      decimals="INF"
      id="x_948b3467-5550-4292-abca-fca91da8ef8f"
      unitRef="USD">70</oef:ExpenseExampleYear01>
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      contextRef="S000065871_C000212812"
      decimals="INF"
      id="x_546d6d7e-ab4c-4675-8454-6daca443dce8"
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      contextRef="S000065871_C000212812"
      decimals="INF"
      id="d30dbb93-edd3-4597-997c-1cc31a5d78ec"
      unitRef="USD">473</oef:ExpenseExampleYear05>
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      contextRef="S000065871_C000212812"
      decimals="INF"
      id="x_188048ac-87d7-4b05-ac74-9aac38421459"
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    <oef:PortfolioTurnoverHeading
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      id="f4cb7c54-14fe-4232-8a91-1311d530434b">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-weight:bold;"&gt;Portfolio turnover&lt;/span&gt;</oef:PortfolioTurnoverHeading>
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      id="b7da9b2e-1105-4af9-b83c-ce56f6bc5129">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;margin-left:3.76%;"&gt;The Fund pays transaction costs, such as commissions, when it buys and sells securities. A higher portfolio turnover rate may &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;result in higher transaction costs and, for holders of Fund shares subject to U.S. taxes, higher income taxes. These transaction costs, which are not reflected in Annual Fund operating expenses or in the Example, affect the Fund&#x2019;s performance.&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; During its fiscal year &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;ended February 28, 2025, the Fund&#x2019;s portfolio turnover rate (excluding short-term investments) was &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;90&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;% of the average value of its portfolio securities.&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; That portfolio turnover rate includes investments in U.S. Treasury Fund, which the Fund uses as a short-term &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;investment vehicle for cash management. The Fund&#x2019;s portfolio turnover rate during its fiscal year ended February 28, 2025, excluding transactions in U.S. Treasury Fund and other short-term investments, was 89% of the average value of its portfolio securities.&lt;/span&gt;</oef:PortfolioTurnoverTextBlock>
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    <oef:StrategyHeading
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      id="x_9c27f80b-23a3-4254-947b-ed25dfabdfed">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-weight:bold;"&gt;Principal investment strategies&lt;/span&gt;</oef:StrategyHeading>
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      id="x_356fa4c9-f755-42fc-9d48-bd7ae401a230">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;margin-left:3.76%;"&gt;GMO seeks to achieve the Fund&#x2019;s investment objective by investing the Fund&#x2019;s assets primarily in equities of U.S. small-cap &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;companies. GMO selects the securities the Fund buys and sells based on its evaluation of companies&#x2019; published financial information, securities&#x2019; prices, equity and other markets, the overall global economy, and governmental policies. &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;margin-left:3.76%;"&gt;In selecting securities for the Fund, GMO uses a combination of proprietary quantitative investment methods to identify U.S. &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;equities GMO believes have positive return potential relative to other U.S. equities. Some of these methods evaluate individual companies or groups of companies based on the ratio of their security price to historical financial information and forecasted financial information, such as return on invested capital, profitability, cash flow and earnings, and a comparison of these ratios to current and historical averages. Other methods focus on patterns of information, such as price movement or volatility of an asset class, security, or market, and macroeconomic factors. In constructing the Fund&#x2019;s portfolio, GMO also considers position size, sector and industry exposure, market capitalization, liquidity, and transaction costs. At times, the Fund may have substantial exposure to a single asset class, industry, sector and companies with similar market capitalizations. The Fund may invest in securities of companies of any market capitalization. GMO also may consider ESG (environmental, social and governance) criteria. For example, GMO generally avoids investing the Fund&#x2019;s assets in companies engaged in the manufacture, supply, or distribution of cluster munitions, as well as companies primarily involved in the mining and production of thermal coal. The factors GMO considers and investment methods GMO uses can change over time.&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;margin-left:3.76%;"&gt;As an alternative to investing directly in equities, the Fund may invest in exchange-traded and over-the-counter (OTC) derivatives &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;and exchange-traded funds (ETFs). The Fund also may invest in derivatives and ETFs in an attempt to obtain or adjust elements of its long or short investment exposure. Derivatives used may include futures, options, and swap contracts. In addition, the Fund may lend its portfolio securities.&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;margin-left:3.76%;"&gt;Under normal circumstances, the Fund invests directly and indirectly at least 80% of its assets in equities of small-cap companies &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;(see &#x201c;Name Policies&#x201d;). The term &#x201c;small-cap companies&#x201d; means companies whose market capitalization at the time of investment is less than that of the companies in the bottom decile of market capitalization of the MSCI US IMI Index or that are included in the S&amp;amp;P SmallCap 600 Index. As of May 31, 2025, the market capitalization of companies comprising the bottom decile of the MSCI US IMI Index by market capitalization ranged from approximately $65.7 million to $14.0 billion. As of May 31, 2025, the market capitalization for the companies comprising the S&amp;amp;P SmallCap 600 Index ranged from approximately $185.1&#160;million to $8.2 billion.&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;margin-left:3.76%;"&gt;Under normal circumstances, the Fund invests directly and indirectly (e.g., through underlying funds or derivatives) at least 80% of &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;its assets in companies tied economically to the United States (see &#x201c;Name Policies&#x201d;).&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;margin-left:3.76%;"&gt;The Fund also may invest in U.S. Treasury Fund, in money market funds unaffiliated with GMO, and directly in the types of &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;investments typically held by money market funds.&lt;/span&gt;</oef:StrategyNarrativeTextBlock>
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      contextRef="S000065871_RiskLoseMoneyMember"
      id="x_77c3d789-6ca2-4696-8bfc-a8fbd1e8b7ec">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;Many factors can affect this value, and you may lose money by investing in the Fund.&lt;/span&gt;</oef:RiskTextBlock>
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      contextRef="S000065871_RiskNotInsuredDepositoryInstitutionMember"
      id="b8eb37d9-5960-45f6-9675-958ce7ad2422">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;An investment in the Fund is not a bank deposit and is not insured or guaranteed by the FDIC or &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;any government agency.&lt;/span&gt;</oef:RiskTextBlock>
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      contextRef="S000065871_MarketRiskEquitiesRiskMember"
      id="x_780bdcaf-424a-4bc3-8514-6bdd269636b0">&lt;span style="color:#000000;font-family:Times New Roman;font-size:8pt;"&gt;&#x25cf;&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-style:italic;"&gt;Market Risk &#x2013; Equities &#x2013; &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;The market price of an equity in the Fund&#x2019;s portfolio may decline due to factors affecting the issuer or its industry or the economy and equity markets generally. If the Fund purchases an equity for less than its fundamental fair (or intrinsic) value as assessed by GMO, the Fund runs the risk that the market price of the equity will not appreciate or will decline (for example, if GMO&#x2019;s assessment proves to be incorrect or the market fails to recognize the equity&#x2019;s intrinsic value). The Fund also may purchase equities that typically trade at higher multiples of current earnings than other securities, and the market prices of these equities often are more sensitive to changes in future earnings expectations and interest rates than the market prices of equities trading at lower multiples. Declines in stock market prices generally are likely to reduce the net asset value of the Fund&#x2019;s shares.&lt;/span&gt;</oef:RiskTextBlock>
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      contextRef="S000065871_ManagementandOperationalRiskMember"
      id="x_995171a5-52a6-4d23-ab63-f7c77515ad7a">&lt;span style="color:#000000;font-family:Times New Roman;font-size:8pt;"&gt;&#x25cf;&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-style:italic;"&gt;Management and Operational Risk&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; &#x2013; The Fund runs the risk that GMO&#x2019;s investment techniques will fail to produce intended results.&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;GMO uses quantitative models as part of its investment process. GMO&#x2019;s models may not accurately predict future market movements. In addition, GMO&#x2019;s models rely on assumptions and data that are subject to limitations (e.g., inaccuracies, staleness) that could adversely affect their predictive value.&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; The Fund also runs the risk that GMO&#x2019;s assessment of an investment, including a &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;security&#x2019;s fundamental fair (or intrinsic) value, is wrong or that deficiencies in GMO&#x2019;s or another service provider&#x2019;s internal systems or controls will cause losses for the Fund or impair Fund operations.&lt;/span&gt;</oef:RiskTextBlock>
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      contextRef="S000065871_SmallerCompanyRiskMember"
      id="c82ea9eb-5ed5-4fa0-b1f2-0b32e8430694">&lt;span style="color:#000000;font-family:Times New Roman;font-size:8pt;"&gt;&#x25cf;&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-style:italic;"&gt;Smaller Company Risk&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; &#x2013; Small-cap companies may have limited product lines, markets, or financial resources, lack the competitive strength of larger companies, have less experienced managers or depend on a few key employees. The securities of small-cap companies often are less widely held and trade less frequently and in lesser quantities, and their market prices often fluctuate more, than the securities of companies with larger market capitalizations.&lt;/span&gt;</oef:RiskTextBlock>
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      id="x_684aa272-e64e-448b-a4ad-4545fcae75c5">&lt;span style="color:#000000;font-family:Times New Roman;font-size:8pt;"&gt;&#x25cf;&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-style:italic;"&gt;Market Disruption and Geopolitical Risk&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; &#x2013; Geopolitical and other events (e.g., wars, pandemics, sanctions, terrorism, diplomatic tensions, dramatic changes in regulatory and/or foreign policy, cyberattacks, and rapid technological developments such as artificial intelligence) often disrupt securities markets and adversely affect the general economy or particular economies and markets. Those events, as well as other changes in non-U.S. and U.S. economic and political conditions, could exacerbate other risks or otherwise reduce the value of the Fund&#x2019;s investments.&lt;/span&gt;</oef:RiskTextBlock>
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      contextRef="S000065871_FocusedInvestmentRiskMember"
      id="x_204e86b6-d14f-473c-8318-760e9191c8e5">&lt;span style="color:#000000;font-family:Times New Roman;font-size:8pt;"&gt;&#x25cf;&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-style:italic;"&gt;Focused Investment Risk&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; &#x2013; Investments in countries, regions, asset classes, sectors, industries, currencies, or issuers that are subject to the same or similar risk factors and investments whose market prices are closely correlated are subject to higher overall risk than investments that are more diversified or whose market prices are not as closely correlated.&lt;/span&gt;</oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="S000065871_IlliquidityRiskMember"
      id="f14185fe-bb1d-4bdb-92f1-83de78726654">&lt;span style="color:#000000;font-family:Times New Roman;font-size:8pt;"&gt;&#x25cf;&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-style:italic;"&gt;Illiquidity Risk&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; &#x2013; Low trading volume, lack of a market maker, large position size, or legal restrictions increase the risk that the Fund or an underlying fund is limited or prevented from selling particular securities or closing derivative positions at desirable prices at a particular time or at all.&lt;/span&gt;</oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="S000065871_ValueInvestingRiskMember"
      id="x_3d168d27-e0af-4e43-bce9-c2f9808c99cc">&lt;span style="color:#000000;font-family:Times New Roman;font-size:8pt;"&gt;&#x25cf;&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-style:italic;"&gt;Value Investing Risk&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; &#x2013; Issuers whose securities GMO believes are undervalued may not realize their business potential, may never be recognized by the market as being undervalued and/or may be appropriately priced notwithstanding GMO&#x2019;s assessment. These and other factors may cause the price of value stocks to decline, resulting in losses to the Fund.&lt;/span&gt;</oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="S000065871_DerivativesandShortSalesRiskMember"
      id="x_29ecc79e-813b-4e70-abee-26ab79bf27d9">&lt;span style="color:#000000;font-family:Times New Roman;font-size:8pt;"&gt;&#x25cf;&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-style:italic;"&gt;Derivatives and Short Sales Risk&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; &#x2013; The use of derivatives involves the risk that their value may not change as expected relative to changes in the value of the underlying assets, pools of assets, rates, currencies or indices. Derivatives also present other risks, including market risk, illiquidity risk, currency risk, credit risk, leveraging risk, commodities risk and counterparty risk. The market price of an option is affected by many factors, including changes in the market prices or dividend rates of underlying securities (or in the case of indices, the securities in such indices); the time remaining before expiration; changes in interest rates or exchange rates; and changes in the actual or perceived volatility of the relevant index or underlying securities. The Fund typically creates short investment exposure by selling securities short or by taking a derivative position in which the value of the derivative moves in the opposite direction from the price of an underlying asset, pool of assets, rate, currency or index. Specifically, the net asset value of the Fund&#x2019;s shares will be adversely affected if the securities or other assets that are the subject of the Fund&#x2019;s short exposures appreciate in value. The risk of loss associated with derivatives that provide short investment exposure and short sales of securities is theoretically unlimited.&lt;/span&gt;</oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="S000065871_CounterpartyRiskMember"
      id="x_4272c5e9-1cd0-4fea-8237-224a5096e4d3">&lt;span style="color:#000000;font-family:Times New Roman;font-size:8pt;"&gt;&#x25cf;&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-style:italic;"&gt;Counterparty Risk&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; &#x2013; The Fund runs the risk that the counterparty to a derivatives contract or a clearing member used by the Fund to hold a cleared derivatives contract is unable or unwilling to make timely settlement payments, return the Fund&#x2019;s collateral or otherwise honor its obligations.&lt;/span&gt;</oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="S000065871_LeveragingRiskMember"
      id="x_1709563c-3b3f-4ac2-9dce-ddfdb478cd62">&lt;span style="color:#000000;font-family:Times New Roman;font-size:8pt;"&gt;&#x25cf;&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-style:italic;"&gt;Leveraging Risk&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; &#x2013; The use of derivatives, short sales and securities lending can create leverage. Leverage increases the Fund&#x2019;s losses when the value of its investments (including derivatives) declines. In addition, the Fund&#x2019;s portfolio will be leveraged if it exercises its right to delay payment on a redemption and the value of the Fund&#x2019;s assets declines between the time a redemption request is treated as being received by the Fund and the time the Fund liquidates assets to fund that redemption.&lt;/span&gt;</oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="S000065871_LargeTransactionsRiskMember"
      id="x_72f7e66d-532e-4ce6-aaf8-00d0b26faa54">&lt;span style="color:#000000;font-family:Times New Roman;font-size:8pt;"&gt;&#x25cf;&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-style:italic;"&gt;Large Transactions Risk&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; &#x2013; To the extent that a large number of shares of the Fund is held by a single shareholder (e.g., an institutional investor or another GMO Fund) or a group of shareholders with a common investment strategy (e.g., GMO asset allocation accounts), the Fund is subject to the risk that a redemption by (or caused by) that shareholder or group will require the Fund to sell investments at disadvantageous prices, disrupt the Fund&#x2019;s operations, lead to temporary overexposure to the Fund&#x2019;s intended investment program or force the Fund&#x2019;s liquidation. The Fund also may be subject to these effects when a number of shareholders collectively redeem or sell a large amount of Fund shares.&lt;/span&gt;</oef:RiskTextBlock>
    <oef:BarChartAndPerformanceTableHeading
      contextRef="S000065871"
      id="x_5f679d45-cc98-4f44-b147-05658fc85706">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-weight:bold;"&gt;Performance&lt;/span&gt;</oef:BarChartAndPerformanceTableHeading>
    <oef:PerformanceNarrativeTextBlock
      contextRef="S000065871"
      id="d540d15e-a841-41e5-84cb-bc714a927721">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;margin-left:3.76%;"&gt;The bar chart and table below provide some indication of the risks of investing in the Fund by showing changes in the Fund&#x2019;s &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;annual total returns from year to year for the periods indicated and by comparing the Fund&#x2019;s average annual total returns for different calendar periods with those of a broad-based securities market index and an additional comparative index intended solely to represent, in satisfaction of regulatory requirements, the overall domestic equity market.&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; Share classes not shown would have substantially similar &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;annual returns to those below because all share classes invest in the same portfolio of securities. Annual returns vary among share classes to the extent that they bear different expenses. Share classes that bear higher expenses than the share classes shown below would have lower returns. &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;After-tax returns are calculated using the historical highest individual federal marginal income tax rates and do not &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;reflect the impact of state and local taxes.&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; Actual after-tax returns depend on your tax situation and may differ from those shown. After-tax&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; returns shown are not relevant if you are tax-exempt or if you hold your Fund shares through tax-advantaged arrangements (such as a 401(k) plan or individual retirement account). &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;After-tax returns are shown for Class VI shares only; after-tax returns for other classes &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;will vary.&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; Updated performance information for the Fund is available at &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;www.gmo.com&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;. &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;Past performance (before and after taxes) is not an indication of future performance.&lt;/span&gt;</oef:PerformanceNarrativeTextBlock>
    <oef:PerformanceInformationIllustratesVariabilityOfReturns
      contextRef="S000065871"
      id="x_15da6951-d4fa-4b6f-901c-3c801451c642">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;margin-left:3.76%;"&gt;The bar chart and table below provide some indication of the risks of investing in the Fund by showing changes in the Fund&#x2019;s &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;annual total returns from year to year for the periods indicated and by comparing the Fund&#x2019;s average annual total returns for different calendar periods with those of a broad-based securities market index and an additional comparative index intended solely to represent, in satisfaction of regulatory requirements, the overall domestic equity market.&lt;/span&gt;</oef:PerformanceInformationIllustratesVariabilityOfReturns>
    <oef:PerformanceTableUsesHighestFederalRate
      contextRef="S000065871"
      id="x_0f6564a8-adfc-420e-a7d3-52994cf4a34f">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;After-tax returns are calculated using the historical highest individual federal marginal income tax rates and do not &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;reflect the impact of state and local taxes.&lt;/span&gt;</oef:PerformanceTableUsesHighestFederalRate>
    <oef:PerformanceTableNotRelevantToTaxDeferred
      contextRef="S000065871"
      id="x_105e4c2f-de23-4669-9561-e8f8ce284975">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; Actual after-tax returns depend on your tax situation and may differ from those shown. After-tax&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; returns shown are not relevant if you are tax-exempt or if you hold your Fund shares through tax-advantaged arrangements (such as a 401(k) plan or individual retirement account). &lt;/span&gt;</oef:PerformanceTableNotRelevantToTaxDeferred>
    <oef:PerformanceTableOneClassOfAfterTaxShown
      contextRef="S000065871"
      id="x_0e98449e-4ba3-4da2-b943-4199ab7f9a0d">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;After-tax returns are shown for Class VI shares only; after-tax returns for other classes &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;will vary.&lt;/span&gt;</oef:PerformanceTableOneClassOfAfterTaxShown>
    <oef:PerformanceAvailabilityWebSiteAddress
      contextRef="S000065871"
      id="x_50b9187a-5bff-4a2c-854b-33338922c1db">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;www.gmo.com&lt;/span&gt;</oef:PerformanceAvailabilityWebSiteAddress>
    <oef:PerformancePastDoesNotIndicateFuture
      contextRef="S000065871"
      id="x_25b76a61-4037-4d20-b2cf-725c04fdf4ed">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;Past performance (before and after taxes) is not an indication of future performance.&lt;/span&gt;</oef:PerformancePastDoesNotIndicateFuture>
    <oef:BarChartHeading
      contextRef="S000065871"
      id="cf8cb75b-490d-4757-83d9-f00d1d8057e1">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-weight:bold;"&gt;Annual Total Returns/Class VI Shares&lt;/span&gt; &lt;br/&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;Years Ending December 31&lt;/span&gt;</oef:BarChartHeading>
    <oef:BarChartClosingTextBlock
      contextRef="S000065871"
      id="ef0dffdd-68aa-4d22-aabe-66f8239422be">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;Highest Quarter:&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;27.43%&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;-sec-ix-hidden:a5da3427-e547-444a-9687-94dc959538b8"&gt;4Q 2020&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;Lowest Quarter:&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;-38.07%&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;-sec-ix-hidden:x_2c536f47-06e4-421e-b12a-cc867f280c68"&gt;1Q 2020&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;Year-to-Date:&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;-7.48%&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;As of&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;3/31/2025&lt;/span&gt;</oef:BarChartClosingTextBlock>
    <oef:HighestQuarterlyReturnLabel
      contextRef="S000065871_C000212810"
      id="f227d2ef-68f3-42c6-907b-68ed5d16af17">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;Highest Quarter:&lt;/span&gt;</oef:HighestQuarterlyReturnLabel>
    <oef:BarChartHighestQuarterlyReturn
      contextRef="S000065871_C000212810"
      decimals="4"
      id="b4175e4f-40ad-451d-ab43-49a9cfc54ca6"
      unitRef="pure">0.2743</oef:BarChartHighestQuarterlyReturn>
    <oef:LowestQuarterlyReturnLabel
      contextRef="S000065871_C000212810"
      id="x_70ffe41d-8ea1-4a7b-a369-644aca8c1542">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;Lowest Quarter:&lt;/span&gt;</oef:LowestQuarterlyReturnLabel>
    <oef:BarChartLowestQuarterlyReturn
      contextRef="S000065871_C000212810"
      decimals="4"
      id="x_14aea188-aa95-4f31-b6f1-26c260bc5b4d"
      unitRef="pure">-0.3807</oef:BarChartLowestQuarterlyReturn>
    <oef:YearToDateReturnLabel
      contextRef="S000065871_C000212810"
      id="d9924086-4877-4ef6-b24e-3ff975ec7fdc">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;Year-to-Date:&lt;/span&gt;</oef:YearToDateReturnLabel>
    <oef:BarChartYearToDateReturn
      contextRef="S000065871_C000212810"
      decimals="4"
      id="x_660e030c-aa78-4eee-a529-588a2a0a5250"
      unitRef="pure">-0.0748</oef:BarChartYearToDateReturn>
    <oef:BarChartYearToDateReturnDate
      contextRef="S000065871_C000212810"
      id="acd804c4-c57a-4658-b092-26c9288cdfac">2025-03-31</oef:BarChartYearToDateReturnDate>
    <oef:PerformanceTableHeading
      contextRef="S000065871"
      id="x_51408516-8a65-4491-af2f-397d2b34274b">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-weight:bold;"&gt;Average Annual Total Returns&lt;/span&gt; &lt;br/&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;Periods Ending December 31, 2024&lt;/span&gt;</oef:PerformanceTableHeading>
    <oef:PerfInceptionDate
      contextRef="C000212810"
      id="x_5d58c2b8-1efb-49ac-b0b4-779622c9e7e8">2019-07-02</oef:PerfInceptionDate>
    <oef:AvgAnnlRtrPct
      contextRef="C000212810_01Jan2024_31Dec2024"
      decimals="4"
      id="c458d770-2f22-4cbf-b1e5-121edc3d8ab6"
      unitRef="pure">0.1116</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000212810_01Jan2020_31Dec2024"
      decimals="4"
      id="x_56872739-c288-412c-97fd-72683aacd4c3"
      unitRef="pure">0.1026</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000212810_02Jul2019_31Dec2024"
      decimals="4"
      id="x_7a0e7043-ad42-45e1-a656-852c91734bf6"
      unitRef="pure">0.1094</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000212810_AfterTaxesOnDistributionsMember_01Jan2024_31Dec2024"
      decimals="4"
      id="x_75d5240e-4717-4870-8a55-1ac1ed42780e"
      unitRef="pure">0.1075</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000212810_AfterTaxesOnDistributionsMember_01Jan2020_31Dec2024"
      decimals="4"
      id="x_8257cd7d-96a0-467c-b8aa-e3c9c92dd029"
      unitRef="pure">0.0686</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000212810_AfterTaxesOnDistributionsMember_02Jul2019_31Dec2024"
      decimals="4"
      id="e5e5e8ba-3450-4c75-93ba-53357fa402b2"
      unitRef="pure">0.0778</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000212810_AfterTaxesOnDistributionsAndSalesMember_01Jan2024_31Dec2024"
      decimals="4"
      id="x_63954886-3d1c-480f-ba5b-529cbb73968b"
      unitRef="pure">0.0694</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000212810_AfterTaxesOnDistributionsAndSalesMember_01Jan2020_31Dec2024"
      decimals="4"
      id="f54e1d9b-35d7-4f0a-98a0-eab42ac17286"
      unitRef="pure">0.0686</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000212810_AfterTaxesOnDistributionsAndSalesMember_02Jul2019_31Dec2024"
      decimals="4"
      id="x_12c8114e-4463-4051-ae8f-f6c2161c089f"
      unitRef="pure">0.0754</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000212810_SPSmallCap600ValueIndexMember_01Jan2024_31Dec2024"
      decimals="4"
      id="de07420c-eff3-410d-8b41-f231bc9c4d29"
      unitRef="pure">0.0756</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000212810_SPSmallCap600ValueIndexMember_01Jan2020_31Dec2024"
      decimals="4"
      id="ba95d1f8-6259-4f6c-957e-a24bf50d36cf"
      unitRef="pure">0.0809</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000212810_SPSmallCap600ValueIndexMember_02Jul2019_31Dec2024"
      decimals="4"
      id="x_0b7cf5d2-3589-4e82-aea5-05fe0816c542"
      unitRef="pure">0.0923</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000212810_SPComposite1500IndexMember_01Jan2024_31Dec2024"
      decimals="4"
      id="x_4ebe0d59-74c0-4cbe-ab81-6c3281394f02"
      unitRef="pure">0.2395</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000212810_SPComposite1500IndexMember_01Jan2020_31Dec2024"
      decimals="4"
      id="x_3887819a-b5f7-4495-9b93-082e1eb3a9b9"
      unitRef="pure">0.1413</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000212810_SPComposite1500IndexMember_02Jul2019_31Dec2024"
      decimals="4"
      id="x_8db25826-b728-472e-9519-1ad50fe6b8e7"
      unitRef="pure">0.1465</oef:AvgAnnlRtrPct>
    <oef:ObjectiveHeading
      contextRef="S000004922"
      id="ec554ede-31c9-4ff4-b6ee-35edbbd4570d">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-weight:bold;"&gt;Investment objective&lt;/span&gt;</oef:ObjectiveHeading>
    <oef:ObjectivePrimaryTextBlock
      contextRef="S000004922"
      id="x_7eab2325-3440-4c23-be76-f552747e94b3">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;Total return in excess of that of its benchmark, the J.P. Morgan EMBI Global Diversified.&lt;/span&gt;</oef:ObjectivePrimaryTextBlock>
    <oef:ExpenseHeading
      contextRef="S000004922"
      id="x_68cd96ac-625b-406d-a48f-086e41ef3a1f">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-weight:bold;"&gt;Fees and expenses&lt;/span&gt;</oef:ExpenseHeading>
    <oef:ExpenseNarrativeTextBlock
      contextRef="S000004922"
      id="x_657ec179-a767-47a1-8b5d-5638852248be">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;margin-left:3.76%;"&gt;The tables below describe the fees and expenses that you may bear for each class of shares if you buy, hold, and sell shares of the &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;Fund. You may pay other fees, such as brokerage commissions and other fees to financial intermediaries, which are not reflected in the tables and examples below.&lt;/span&gt;</oef:ExpenseNarrativeTextBlock>
    <oef:MaximumDeferredSalesChargeOverOfferingPrice
      contextRef="S000004922_C000013327"
      decimals="4"
      id="e86fd036-6b62-4e27-a4b9-fba508688b92"
      unitRef="pure">0.0075</oef:MaximumDeferredSalesChargeOverOfferingPrice>
    <oef:MaximumDeferredSalesChargeOverOfferingPrice
      contextRef="S000004922_C000013328"
      decimals="4"
      id="x_586ad37d-b771-4f7d-ad67-f5db26ada4ea"
      unitRef="pure">0.0075</oef:MaximumDeferredSalesChargeOverOfferingPrice>
    <oef:MaximumDeferredSalesChargeOverOfferingPrice
      contextRef="S000004922_C000013330"
      decimals="4"
      id="x_04a8323d-45ee-4e17-a527-fa80f1094570"
      unitRef="pure">0.0075</oef:MaximumDeferredSalesChargeOverOfferingPrice>
    <oef:RedemptionFeeOverRedemption
      contextRef="S000004922_C000013327"
      decimals="4"
      id="ef274342-183f-4ab2-9645-b6c5ed4d683f"
      unitRef="pure">-0.0075</oef:RedemptionFeeOverRedemption>
    <oef:RedemptionFeeOverRedemption
      contextRef="S000004922_C000013328"
      decimals="4"
      id="ebec0530-f0c5-4580-a41b-c8adb736626d"
      unitRef="pure">-0.0075</oef:RedemptionFeeOverRedemption>
    <oef:RedemptionFeeOverRedemption
      contextRef="S000004922_C000013330"
      decimals="4"
      id="x_8e549c54-0e54-4f8c-bb28-eb55345573a8"
      unitRef="pure">-0.0075</oef:RedemptionFeeOverRedemption>
    <oef:OperatingExpensesCaption
      contextRef="S000004922"
      id="x_32e7df9b-0510-434f-b6cf-8dd5058fedac">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-weight:bold;"&gt;Annual Fund operating expenses &lt;/span&gt; &lt;br/&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;(expenses that you bear each year as a percentage of the value of your investment)&lt;/span&gt;</oef:OperatingExpensesCaption>
    <oef:ManagementFeesOverAssets
      contextRef="S000004922_C000013327"
      decimals="4"
      id="x_7eb340c6-56ba-4319-966f-993137a0a374"
      unitRef="pure">0.0050</oef:ManagementFeesOverAssets>
    <oef:ManagementFeesOverAssets
      contextRef="S000004922_C000013328"
      decimals="4"
      id="ec1db70e-46eb-40ec-9ea9-6c67c0698c5d"
      unitRef="pure">0.0045</oef:ManagementFeesOverAssets>
    <oef:ManagementFeesOverAssets
      contextRef="S000004922_C000013330"
      decimals="5"
      id="e652c9e8-5c3a-41f7-907c-d3c6808a9d1a"
      unitRef="pure">0.00405</oef:ManagementFeesOverAssets>
    <oef:OtherExpensesOverAssets
      contextRef="S000004922_C000013327"
      decimals="4"
      id="d217cf8a-d380-4120-9bb2-e80d4876780b"
      unitRef="pure">0.0011</oef:OtherExpensesOverAssets>
    <oef:OtherExpensesOverAssets
      contextRef="S000004922_C000013328"
      decimals="4"
      id="x_05a58580-1035-4dec-8b4d-11f5d74fcf6e"
      unitRef="pure">0.0011</oef:OtherExpensesOverAssets>
    <oef:OtherExpensesOverAssets
      contextRef="S000004922_C000013330"
      decimals="4"
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    <oef:NetExpensesOverAssets
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      id="x_55f7cdf5-b939-4e60-b4e0-fd0be34d4d4c">&lt;span style="color:#000000;font-family:Times New Roman;font-size:8pt;font-style:italic;"&gt;June 30, 2026&lt;/span&gt;</oef:FeeWaiverOrReimbursementOverAssetsDateOfTermination>
    <oef:ExpenseExampleHeading
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      id="x_6f4c7da6-c3f9-4cdd-8075-cfc7109e30a7">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-weight:bold;"&gt;Example&lt;/span&gt;</oef:ExpenseExampleHeading>
    <oef:ExpenseExampleNarrativeTextBlock
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      id="x_1c6bc06a-c8e7-4e02-9257-302439a97c4f">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;margin-left:3.76%;"&gt;This example is intended to help you compare the cost of investing in the Fund with the cost of investing in other funds. The &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;example assumes that you invest $10,000 in the Fund for the time periods indicated. The example also assumes that your investment has a 5% return each year and that the Fund&#x2019;s operating expenses remain the same as those shown in the table. The one year amounts shown reflect the expense waiver noted in the expense table. Although your actual costs may be higher or lower, based on these assumptions your costs would be:&lt;/span&gt;</oef:ExpenseExampleNarrativeTextBlock>
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      id="x_6f2ad1fb-f69a-41e5-b498-304bfa17e934"
      unitRef="USD">215</oef:ExpenseExampleYear01>
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      decimals="INF"
      id="b93d2854-2993-4f11-8d4e-a430ed577b19"
      unitRef="USD">354</oef:ExpenseExampleYear03>
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      id="e77afe49-dcf1-4517-aa48-6a777f64063e"
      unitRef="USD">505</oef:ExpenseExampleYear05>
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      contextRef="S000004922_C000013327"
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      id="x_9c278694-66f9-4194-a188-2df8ee62a29b"
      unitRef="USD">946</oef:ExpenseExampleYear10>
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      decimals="INF"
      id="x_0a40003a-ed91-4862-9e31-f7998c126dc6"
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      id="x_7d0eb8f9-63fa-4440-b079-3c109cc7e2dd"
      unitRef="USD">269</oef:ExpenseExampleNoRedemptionYear03>
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      decimals="INF"
      id="a250be74-ed69-4b0f-92d9-9c38871eb3b2"
      unitRef="USD">413</oef:ExpenseExampleNoRedemptionYear05>
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      id="x_9036e7b5-5322-4199-806a-4f78d009f687"
      unitRef="USD">831</oef:ExpenseExampleNoRedemptionYear10>
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      decimals="INF"
      id="a79ae368-0e98-48cc-a558-45a83c924f0b"
      unitRef="USD">210</oef:ExpenseExampleYear01>
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      decimals="INF"
      id="debc8d29-7591-4602-ad73-24465803f40b"
      unitRef="USD">338</oef:ExpenseExampleYear03>
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      contextRef="S000004922_C000013328"
      decimals="INF"
      id="x_968d41f6-a1e6-4076-bc0f-9968d681ec71"
      unitRef="USD">478</oef:ExpenseExampleYear05>
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      decimals="INF"
      id="x_2133528d-a969-48c4-95a1-c614d36e389e"
      unitRef="USD">886</oef:ExpenseExampleYear10>
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      decimals="INF"
      id="efa9ecab-91dc-4e14-9a99-ef4d00e58235"
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      decimals="INF"
      id="c84fddd4-93c3-4485-9a8e-75a7a8e62e1b"
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      contextRef="S000004922_C000013328"
      decimals="INF"
      id="f175440f-87bd-430e-b73b-aa8208c924ac"
      unitRef="USD">385</oef:ExpenseExampleNoRedemptionYear05>
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      contextRef="S000004922_C000013328"
      decimals="INF"
      id="x_592be716-5627-43e4-9d82-d40fb16efd68"
      unitRef="USD">771</oef:ExpenseExampleNoRedemptionYear10>
    <oef:ExpenseExampleYear01
      contextRef="S000004922_C000013330"
      decimals="INF"
      id="x_6d1cfa45-3de2-4678-8d43-489f568a69aa"
      unitRef="USD">205</oef:ExpenseExampleYear01>
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      contextRef="S000004922_C000013330"
      decimals="INF"
      id="x_0d0f5da0-242b-4d6d-b125-0d53928cba37"
      unitRef="USD">322</oef:ExpenseExampleYear03>
    <oef:ExpenseExampleYear05
      contextRef="S000004922_C000013330"
      decimals="INF"
      id="x_9a39baaa-cc23-4f60-b4ab-27a2f19cd9a4"
      unitRef="USD">451</oef:ExpenseExampleYear05>
    <oef:ExpenseExampleYear10
      contextRef="S000004922_C000013330"
      decimals="INF"
      id="x_9e272f67-872b-456c-8583-ea3643709de6"
      unitRef="USD">826</oef:ExpenseExampleYear10>
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      contextRef="S000004922_C000013330"
      decimals="INF"
      id="x_630b1566-7d53-492f-a6d3-312afbdbcb93"
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    <oef:ExpenseExampleNoRedemptionYear03
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      decimals="INF"
      id="d581e18b-cd88-4ed6-8744-96be509b0800"
      unitRef="USD">237</oef:ExpenseExampleNoRedemptionYear03>
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      contextRef="S000004922_C000013330"
      decimals="INF"
      id="x_87ba5311-a569-4930-a91f-a93cb2c5513f"
      unitRef="USD">358</oef:ExpenseExampleNoRedemptionYear05>
    <oef:ExpenseExampleNoRedemptionYear10
      contextRef="S000004922_C000013330"
      decimals="INF"
      id="x_076bde77-92e6-4515-87e5-e0e2e31f28f9"
      unitRef="USD">711</oef:ExpenseExampleNoRedemptionYear10>
    <oef:PortfolioTurnoverHeading
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      id="x_1aac46e2-a7d3-4c29-ba5b-a53f99c072e5">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-weight:bold;"&gt;Portfolio turnover&lt;/span&gt;</oef:PortfolioTurnoverHeading>
    <oef:PortfolioTurnoverTextBlock
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      id="b8abe8a3-80c6-4b85-9a3c-8d3a245e0299">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;margin-left:3.76%;"&gt;The Fund pays transaction costs, such as commissions, when it buys and sells securities. A higher portfolio turnover rate may &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;result in higher transaction costs and, for holders of Fund shares subject to U.S. taxes, higher income taxes. These transaction costs, which are not reflected in Annual Fund operating expenses or in the Example, affect the Fund&#x2019;s performance.&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; During its fiscal year &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;ended February 28, 2025, the Fund&#x2019;s portfolio turnover rate (excluding short-term investments) was &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;35&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;% of the average value of its portfolio securities.&lt;/span&gt;</oef:PortfolioTurnoverTextBlock>
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      id="d5a6ec44-3f97-401a-beb8-9139a2c804e8"
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    <oef:StrategyHeading
      contextRef="S000004922"
      id="ef55ca7e-5e2b-4d74-9991-2e0d96ec07f7">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-weight:bold;"&gt;Principal investment strategies&lt;/span&gt;</oef:StrategyHeading>
    <oef:StrategyNarrativeTextBlock
      contextRef="S000004922"
      id="c532561f-e55b-486e-913e-3ecbbf729bf4">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;margin-left:3.76%;"&gt;The Fund invests primarily in debt of emerging country sovereign and quasi-sovereign issuers. &#x201c;Sovereign&#x201d; refers to a government &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;and &#x201c;quasi-sovereign&#x201d; refers to a governmental agency, political subdivision or other instrumentality or issuer that is majority owned, directly or indirectly, or whose obligations are guaranteed, by a government. Under normal circumstances, the Fund invests directly and &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;margin-left:0%;"&gt;indirectly (e.g., through other GMO Funds or derivatives) at least 80% of its assets in debt investments tied economically to emerging countries (see &#x201c;Name Policies&#x201d;). In general, the Fund considers &#x201c;emerging countries&#x201d; to be countries whose securities are included in the Fund&#x2019;s benchmark or countries that have similar economic and social structures or default histories to those of countries whose &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;securities are included in the Fund&#x2019;s benchmark. The Fund&#x2019;s performance is likely to be more volatile than that of its benchmark.&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;margin-left:3.76%;"&gt;When constructing the Fund&#x2019;s portfolio, GMO considers risk at both the Fund&#x2019;s portfolio and individual security levels and &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;generally takes into account, among other factors, interest rate duration, credit spread duration, liquidity, transaction costs and default scenarios as well as the idiosyncratic risk of each instrument. When making investment decisions, GMO typically relies more heavily on its assessment of the risk-reward characteristics of individual investments in a given country than on its outlook for that particular country. GMO uses fundamental analytical techniques as the basis for its analysis of both individual investments and country outlook. In performing its analysis with respect to country outlook, GMO typically considers a country&#x2019;s economic structure, fiscal sustainability, external liquidity, and certain ESG (environmental, social, and governance) criteria. The factors GMO considers and investment methods GMO uses can change over time.&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;margin-left:3.76%;"&gt;The Fund may invest in debt investments of all credit qualities, including securities that are in default, and may invest in corporate &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;bonds. (The debt investments in which the Fund invests include below investment grade debt investments, which are commonly referred to as &#x201c;high yield&#x201d; or &#x201c;junk bonds,&#x201d; although these terms are not generally used to refer to emerging country debt securities.) The Fund invests in both non-local currency denominated debt (&#x201c;hard currency debt&#x201d;) and, to a lesser extent, local currency denominated debt. The hard currency debt investments in which the Fund invests are usually denominated in U.S. dollars, Euros, Japanese yen, Swiss francs, or British pounds sterling. After hedging, U.S. dollars typically represent at least 75% of the Fund&#x2019;s currency exposures. The Fund typically invests in less liquid debt investments with the intention of holding them for an extended period of time.&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;margin-left:3.76%;"&gt;In seeking to achieve the Fund&#x2019;s investment objective, GMO typically invests a portion of the Fund&#x2019;s assets in over-the-counter &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;(OTC) and exchange-traded derivatives, including options, swap contracts (including interest rate swaps, total return swaps and credit default swaps), forward currency contracts (including forward contracts on currencies of developed markets), and reverse repurchase agreements. The Fund is not limited in its use of derivatives or in the total notional value of its derivative positions. The Fund may also engage in short sales. Leverage is not a principal component of the Fund&#x2019;s investment strategy. However, because of its derivative positions, the Fund may at times have gross investment exposure in excess of its net assets (i.e., the Fund may be leveraged) and, therefore, may be subject to a higher risk of loss during those times than if the Fund were not leveraged. The Fund&#x2019;s performance can depend substantially on the performance of assets or indices underlying its derivatives even though it does not own those assets or indices.&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;margin-left:3.76%;"&gt;The Fund also may invest in U.S. Treasury Fund, in money market funds unaffiliated with GMO, and directly in the types of &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;investments typically held by money market funds.&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;margin-left:3.76%;"&gt;GMO normally seeks to maintain an interest rate duration for the Fund that is similar to that of its benchmark (approximately 6.4 &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;years as of May 31, 2025). For an additional discussion of duration, see &#x201c;Additional Information About the Funds&#x2019; Investment Strategies, Risks, and Expenses &#x2014; Bond Funds &#x2014; Duration.&#x201d;&lt;/span&gt;</oef:StrategyNarrativeTextBlock>
    <oef:RiskTextBlock
      contextRef="S000004922_RiskLoseMoneyMember"
      id="d92d2c77-74ed-4aa0-b4f2-4f8c5a725b62">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;Many factors can affect this value, and you may lose money by investing in the Fund.&lt;/span&gt;</oef:RiskTextBlock>
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      contextRef="S000004922_RiskNotInsuredDepositoryInstitutionMember"
      id="f3772d14-9b68-4fd5-a7e0-4d36d129ac91">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;An investment in the Fund is not a bank deposit and is not insured or guaranteed by the FDIC or &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;any government agency.&lt;/span&gt;</oef:RiskTextBlock>
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      contextRef="S000004922_CreditRiskMember"
      id="x_191bc97b-63d4-4f5e-847b-558964c7b73a">&lt;span style="color:#000000;font-family:Times New Roman;font-size:8pt;"&gt;&#x25cf;&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-style:italic;"&gt;Credit Risk&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; &#x2013; The Fund runs the risk that the issuer or guarantor of a fixed income investment (including a sovereign or quasi-sovereign debt issuer) or the obligor of an obligation underlying an asset-backed security will be unable or unwilling to satisfy its obligation to pay principal and interest or otherwise to honor its obligations in a timely manner or at all. The market price of a fixed income investment will normally decline as a result of the failure of an issuer, guarantor, or obligor to meet its payment obligations or in anticipation of such a failure. Below investment grade investments (commonly referred to as high yield or &#x201c;junk&#x201d; bonds) have speculative characteristics and are subject to greater credit risk than other fixed income investments. Negative changes in economic conditions or other circumstances are more likely to impair the ability of issuers of below investment grade investments to make principal and interest payments than issuers of investment grade investments.&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; In addition, investments in emerging country sovereign &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;or quasi-sovereign debt are subject to a heightened risk that the issuer responsible for repayment of the debt may be unable or unwilling to pay interest and repay principal when due, and the Fund may lack recourse against the issuer in the event of a default. Investments in quasi-sovereign debt also are subject to the risk that the issuer will default independently of its sovereign.&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;Investments in distressed or defaulted or other low quality debt investments generally are considered speculative and are subject to substantial risks not normally associated with investments in higher quality securities, including adverse business, financial or economic conditions that lead to their issuers&#x2019; payment defaults and insolvency proceedings. In particular, distressed or defaulted obligations might be repaid, if at all, only after lengthy workout or bankruptcy proceedings during which the issuer might not make &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;margin-left:0.00%;"&gt;any interest or other payments, and the Fund may incur additional expenses in its effort to be repaid. If GMO&#x2019;s assessment of the eventual recovery value of a distressed or defaulted debt investment proves incorrect, the Fund may lose a substantial portion or all &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;of its original investment or may be required to accept cash or instruments worth less than its original investment.&lt;/span&gt;</oef:RiskTextBlock>
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      contextRef="S000004922_MarketRiskFixedIncomeRiskMember"
      id="x_1f3fab73-5154-451b-a974-b5ec6627e598">&lt;span style="color:#000000;font-family:Times New Roman;font-size:8pt;"&gt;&#x25cf;&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-style:italic;"&gt;Market Risk &#x2013; Fixed Income&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; &#x2013; The market price of a fixed income investment can decline due to market-related factors, including rising interest or inflation rates and widening credit spreads, or decreased liquidity due, for example, to market uncertainty about the value of a fixed income investment (or class of fixed income investments). In addition, the market prices of emerging country sovereign and quasi-sovereign debt investments can decline due to uncertainty about their credit quality and the reliability of their payment streams.&lt;/span&gt;</oef:RiskTextBlock>
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      contextRef="S000004922_MarketDisruptionandGeopoliticalRiskMember"
      id="d8733d1f-f71e-423a-a2c0-51b0e1eebec9">&lt;span style="color:#000000;font-family:Times New Roman;font-size:8pt;"&gt;&#x25cf;&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-style:italic;"&gt;Market Disruption and Geopolitical Risk&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; &#x2013; Geopolitical and other events (e.g., wars, pandemics, sanctions, terrorism, diplomatic tensions, dramatic changes in regulatory and/or foreign policy, cyberattacks, and rapid technological developments such as artificial intelligence) often disrupt securities markets and adversely affect the general economy or particular economies and markets. Those events, as well as other changes in non-U.S. and U.S. economic and political conditions, could exacerbate other risks or otherwise reduce the value of the Fund&#x2019;s investments.&lt;/span&gt;</oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="S000004922_FocusedInvestmentRiskMember"
      id="aab66031-4e5c-4443-802e-dfdc5a0bae6e">&lt;span style="color:#000000;font-family:Times New Roman;font-size:8pt;"&gt;&#x25cf;&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-style:italic;"&gt;Focused Investment Risk&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; &#x2013; Investments in countries, regions, asset classes, sectors, industries, currencies, or issuers that are subject to the same or similar risk factors and investments whose market prices are closely correlated are subject to higher overall risk than investments that are more diversified or whose market prices are not as closely correlated.&lt;/span&gt;</oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="S000004922_IlliquidityRiskMember"
      id="x_94330ee8-ee0a-438b-a266-005f2f3bf668">&lt;span style="color:#000000;font-family:Times New Roman;font-size:8pt;"&gt;&#x25cf;&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-style:italic;"&gt;Illiquidity Risk&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; &#x2013; Low trading volume, lack of a market maker, large position size, or legal restrictions increase the risk that the Fund or an underlying fund is limited or prevented from selling particular securities or closing derivative positions at desirable prices at a particular time or at all.&lt;/span&gt;</oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="S000004922_DerivativesandShortSalesRiskMember"
      id="f2ac2f59-3bc9-4283-ad59-6f3ead523902">&lt;span style="color:#000000;font-family:Times New Roman;font-size:8pt;"&gt;&#x25cf;&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-style:italic;"&gt;Derivatives and Short Sales Risk&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; &#x2013; The use of derivatives involves the risk that their value may not change as expected relative to changes in the value of the underlying assets, pools of assets, rates, currencies or indices. Derivatives also present other risks, including market risk, illiquidity risk, currency risk, credit risk, leveraging risk, commodities risk and counterparty risk. The market price of an option is affected by many factors, including changes in the market prices or dividend rates of underlying securities (or in the case of indices, the securities in such indices); the time remaining before expiration; changes in interest rates or exchange rates; and changes in the actual or perceived volatility of the relevant index or underlying securities. The Fund typically creates short investment exposure by selling securities short or by taking a derivative position in which the value of the derivative moves in the opposite direction from the price of an underlying asset, pool of assets, rate, currency or index. Specifically, the net asset value of the Fund&#x2019;s shares will be adversely affected if the securities or other assets that are the subject of the Fund&#x2019;s short exposures appreciate in value. The risk of loss associated with derivatives that provide short investment exposure and short sales of securities is theoretically unlimited.&lt;/span&gt;</oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="S000004922_CounterpartyRiskMember"
      id="c990d5d7-71ae-4540-b78d-6db34116ccf3">&lt;span style="color:#000000;font-family:Times New Roman;font-size:8pt;"&gt;&#x25cf;&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-style:italic;"&gt;Counterparty Risk&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; &#x2013; The Fund runs the risk that the counterparty to a derivatives contract or a clearing member used by the Fund to hold a cleared derivatives contract is unable or unwilling to make timely settlement payments, return the Fund&#x2019;s collateral or otherwise honor its obligations.&lt;/span&gt;</oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="S000004922_NonUSInvestmentRiskMember"
      id="x_0af0a7f1-a1f3-442c-a53b-1fe5cd5c4484">&lt;span style="color:#000000;font-family:Times New Roman;font-size:8pt;"&gt;&#x25cf;&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-style:italic;"&gt;Non-U.S. Investment Risk&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; &#x2013; The market prices of many non-U.S. securities fluctuate more than those of U.S. securities. Many non-U.S. securities markets are less stable, smaller, less liquid, and less regulated than U.S. securities markets, and the cost of trading in those markets often is higher than in U.S. securities markets. In addition, non-U.S. securities issuers often are not subject to as much regulation as U.S. issuers, and the reporting, recordkeeping, accounting, custody, and auditing standards to which those issuers are subject often are not as rigorous as U.S. standards. In addition, the Fund is subject to taxation by countries other than the United States, including potentially on a retroactive basis, on (i) capital gains it realizes or dividends, interest, or other amounts it realizes or accrues in respect of non-U.S. investments; (ii) transactions in those investments; and (iii) repatriation of proceeds generated from the sale or other disposition of those investments.&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; Also, the Fund needs a license to invest directly in securities &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;traded in many non-U.S. securities markets, and the Fund is subject to the risk that its license is terminated or suspended. In some non-U.S. securities markets, prevailing custody and trade settlement practices (e.g., the requirement to pay for securities prior to receipt) expose the Fund to credit and other risks. Further, adverse changes in investment regulations, capital requirements or exchange controls could adversely affect the value of the Fund&#x2019;s investments. The risks above (such as substantial price fluctuations and market instability, illiquidity and lack of regulation) and other risks (e.g., nationalization, expropriation or other confiscation of assets of non-U.S. issuers, difficulties enforcing legal judgments or contractual rights and geopolitical risks) tend to be higher for investments in the securities of issuers tied economically to emerging countries. The economies of emerging countries often depend predominantly on only a few industries or commodities and often are more volatile than the economies of developed countries.&lt;/span&gt;</oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="S000004922_LargeTransactionsRiskMember"
      id="c6643e45-7909-46c6-8eb2-ec7a9e82d59b">&lt;span style="color:#000000;font-family:Times New Roman;font-size:8pt;"&gt;&#x25cf;&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-style:italic;"&gt;Large Transactions Risk&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; &#x2013; To the extent that a large number of shares of the Fund is held by a single shareholder (e.g., an institutional investor or another GMO Fund) or a group of shareholders with a common investment strategy (e.g., GMO asset allocation accounts), the Fund is subject to the risk that a redemption by (or caused by) that shareholder or group will require the Fund to sell investments at disadvantageous prices, disrupt the Fund&#x2019;s operations, lead to temporary overexposure to the Fund&#x2019;s intended investment program or force the Fund&#x2019;s liquidation. The Fund also may be subject to these effects when a number of shareholders collectively redeem or sell a large amount of Fund shares.&lt;/span&gt;</oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="S000004922_CurrencyRiskMember"
      id="x_4f5413bc-7ba3-4906-92f1-006e7db48d84">&lt;span style="color:#000000;font-family:Times New Roman;font-size:8pt;"&gt;&#x25cf;&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-style:italic;"&gt;Currency Risk&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; &#x2013; Fluctuations in exchange rates can adversely affect the market value of the Fund&#x2019;s foreign currency holdings and investments denominated in foreign currencies.&lt;/span&gt;</oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="S000004922_ManagementandOperationalRiskMember"
      id="x_8ee6d6e7-5a7a-44fa-9c46-a9aae0b7b765">&lt;span style="color:#000000;font-family:Times New Roman;font-size:8pt;"&gt;&#x25cf;&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-style:italic;"&gt;Management and Operational Risk&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; &#x2013; The Fund runs the risk that GMO&#x2019;s investment techniques will fail to produce intended results.&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;The Fund also runs the risk that GMO&#x2019;s assessment of an investment, including a security&#x2019;s fundamental fair (or intrinsic) value, is wrong or that deficiencies in GMO&#x2019;s or another service provider&#x2019;s internal systems or controls will cause losses for the Fund or impair Fund operations.&lt;/span&gt;</oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="S000004922_LeveragingRiskMember"
      id="fb2ea900-a849-475c-aadd-5b8b8c308abd">&lt;span style="color:#000000;font-family:Times New Roman;font-size:8pt;"&gt;&#x25cf;&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-style:italic;"&gt;Leveraging Risk&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; &#x2013; The use of derivatives, short sales and securities lending can create leverage. Leverage increases the Fund&#x2019;s losses when the value of its investments (including derivatives) declines. In addition, the Fund&#x2019;s portfolio will be leveraged if it exercises its right to delay payment on a redemption and the value of the Fund&#x2019;s assets declines between the time a redemption request is treated as being received by the Fund and the time the Fund liquidates assets to fund that redemption.&lt;/span&gt;</oef:RiskTextBlock>
    <oef:BarChartAndPerformanceTableHeading
      contextRef="S000004922"
      id="b9963faa-bda0-4d82-a6de-a29e3e3676f1">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-weight:bold;"&gt;Performance&lt;/span&gt;</oef:BarChartAndPerformanceTableHeading>
    <oef:PerformanceNarrativeTextBlock
      contextRef="S000004922"
      id="x_067e0f6f-7896-4777-a05e-3a1d37f3d1e9">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;margin-left:3.76%;"&gt;The bar chart and table below provide some indication of the risks of investing in the Fund by showing changes in the Fund&#x2019;s &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;annual total returns from year to year for the periods indicated and by comparing the Fund&#x2019;s average annual total returns for different calendar periods with those of a composite index computed by GMO that tracks historical changes in the Fund&#x2019;s benchmark (a broad-based securities market index) over time. Purchase premiums and redemption fees are not reflected in the bar chart, but are reflected in the table; as a result, the returns in the table are lower than the returns in the bar chart. Returns in the table reflect current purchase premiums and redemption fees.&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; Share classes not shown would have substantially similar annual returns to those below because all &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;share classes invest in the same portfolio of securities. Annual returns vary among share classes to the extent that they bear different expenses. Share classes that bear higher expenses than the share classes shown below would have lower returns. &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;After-tax returns are &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;calculated using the historical highest individual federal marginal income tax rates and do not reflect the impact of state and local taxes.&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;Actual after-tax returns depend on your tax situation and may differ from those shown. After-tax returns shown are not relevant if you are tax-exempt or if you hold your Fund shares through tax-advantaged arrangements (such as a 401(k) plan or individual retirement account). &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;After-tax returns are shown for Class III shares only; after-tax returns for other classes will vary.&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; Updated performance information for the Fund is available at &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;www.gmo.com&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;. &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;Past performance (before and after taxes) is not an indication of future &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;performance.&lt;/span&gt;</oef:PerformanceNarrativeTextBlock>
    <oef:PerformanceInformationIllustratesVariabilityOfReturns
      contextRef="S000004922"
      id="f86aafbf-6c8e-407f-99c9-b849e58b1afa">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;margin-left:3.76%;"&gt;The bar chart and table below provide some indication of the risks of investing in the Fund by showing changes in the Fund&#x2019;s &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;annual total returns from year to year for the periods indicated and by comparing the Fund&#x2019;s average annual total returns for different calendar periods with those of a composite index computed by GMO that tracks historical changes in the Fund&#x2019;s benchmark (a broad-based securities market index) over time. Purchase premiums and redemption fees are not reflected in the bar chart, but are reflected in the table; as a result, the returns in the table are lower than the returns in the bar chart. Returns in the table reflect current purchase premiums and redemption fees.&lt;/span&gt;</oef:PerformanceInformationIllustratesVariabilityOfReturns>
    <oef:PerformanceTableUsesHighestFederalRate
      contextRef="S000004922"
      id="a98bc015-d5b0-46fd-ac8b-f25c95713845">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;After-tax returns are &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;calculated using the historical highest individual federal marginal income tax rates and do not reflect the impact of state and local taxes.&lt;/span&gt;</oef:PerformanceTableUsesHighestFederalRate>
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      contextRef="S000004922"
      id="x_72c87280-2c7a-4540-b5d4-9c94be85f35d">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;Actual after-tax returns depend on your tax situation and may differ from those shown. After-tax returns shown are not relevant if you are tax-exempt or if you hold your Fund shares through tax-advantaged arrangements (such as a 401(k) plan or individual retirement account). &lt;/span&gt;</oef:PerformanceTableNotRelevantToTaxDeferred>
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      contextRef="S000004922"
      id="f2706387-a4f3-432c-8f88-4655c48af71b">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;After-tax returns are shown for Class III shares only; after-tax returns for other classes will vary.&lt;/span&gt;</oef:PerformanceTableOneClassOfAfterTaxShown>
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      id="aa347829-e9ec-4fcc-b7db-528ae7c48ffa">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;www.gmo.com&lt;/span&gt;</oef:PerformanceAvailabilityWebSiteAddress>
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      id="edd18b78-c921-46fb-9489-31cfd5b858e6">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;Past performance (before and after taxes) is not an indication of future &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;performance.&lt;/span&gt;</oef:PerformancePastDoesNotIndicateFuture>
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      id="efa0ff0b-d983-4218-9cdb-e8cfae0e4512">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-weight:bold;"&gt;Annual Total Returns/Class III Shares&lt;/span&gt; &lt;br/&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;Years Ending December 31&lt;/span&gt;</oef:BarChartHeading>
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      id="x_6d2f92dd-019d-41ee-9faf-7643a999fd82">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;Highest Quarter:&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;12.54%&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;-sec-ix-hidden:x_1c07fdb9-778a-4403-afe7-8c19d51bc759"&gt;2Q 2020&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;Lowest Quarter:&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;-14.48%&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;-sec-ix-hidden:x_4d0ef2de-9500-424a-9ea8-a2812f0706f8"&gt;1Q 2020&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;Year-to-Date:&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;3.57%&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;As of&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;3/31/2025&lt;/span&gt;</oef:BarChartClosingTextBlock>
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      id="d5460c62-8272-465d-b203-522d0ae5986e">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;Highest Quarter:&lt;/span&gt;</oef:HighestQuarterlyReturnLabel>
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      contextRef="S000004922_C000013327"
      decimals="4"
      id="x_26f47e7c-f12b-43c1-ad6d-0412a00324de"
      unitRef="pure">0.1254</oef:BarChartHighestQuarterlyReturn>
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      id="b8d3c726-dcd1-418e-8799-66163ac15ce4">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;Lowest Quarter:&lt;/span&gt;</oef:LowestQuarterlyReturnLabel>
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      id="fd0c2d62-b643-4ae1-be05-9a190031f62a"
      unitRef="pure">-0.1448</oef:BarChartLowestQuarterlyReturn>
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      contextRef="S000004922_C000013327"
      id="x_25a5b107-31c7-4ad8-bb0a-62befa07d85b">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;Year-to-Date:&lt;/span&gt;</oef:YearToDateReturnLabel>
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      decimals="4"
      id="x_6ac03f87-c603-4fdd-b0f2-c09c92715b5a"
      unitRef="pure">0.0357</oef:BarChartYearToDateReturn>
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      contextRef="S000004922_C000013327"
      id="x_7106e4ed-3796-4ea3-8f96-cf04152bc0f9">2025-03-31</oef:BarChartYearToDateReturnDate>
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      contextRef="S000004922"
      id="e507dc4b-e7bf-48de-8d31-8cb00852b70f">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-weight:bold;"&gt;Average Annual Total Returns&lt;/span&gt; &lt;br/&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;Periods Ending December 31, 2024&lt;/span&gt;</oef:PerformanceTableHeading>
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      contextRef="C000013327"
      id="x_4375c9dc-2982-431f-8beb-3663c35ed2e8">1994-04-19</oef:PerfInceptionDate>
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      decimals="4"
      id="a2f01aa4-f390-4901-bf58-724edc0da7f4"
      unitRef="pure">0.1167</oef:AvgAnnlRtrPct>
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      id="d5c0c811-ecf1-49fb-9f59-ab1f69796823"
      unitRef="pure">0.0307</oef:AvgAnnlRtrPct>
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      decimals="4"
      id="x_251a346d-a9b1-45bf-a75f-be1721ada7bc"
      unitRef="pure">0.0483</oef:AvgAnnlRtrPct>
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      contextRef="C000013327_19Apr1994_31Dec2024"
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      id="x_7dd0f37e-89da-40aa-a684-0e00f0ca056a"
      unitRef="pure">0.1193</oef:AvgAnnlRtrPct>
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      unitRef="pure">0.0874</oef:AvgAnnlRtrPct>
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      unitRef="pure">-0.0079</oef:AvgAnnlRtrPct>
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      unitRef="pure">0.0737</oef:AvgAnnlRtrPct>
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      unitRef="pure">0.0300</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000013327_JPMorganEMBIGlobalDiversifiedMember_19Apr1994_31Dec2024"
      decimals="4"
      id="f981ce6d-d4cd-4753-9f99-11c33d27133c"
      unitRef="pure">0.0821</oef:AvgAnnlRtrPct>
    <oef:PerfInceptionDate
      contextRef="C000013328"
      id="x_51fe8eb2-7b87-4b56-ada7-6319196d8272">1998-01-09</oef:PerfInceptionDate>
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      contextRef="C000013328_01Jan2024_31Dec2024"
      decimals="4"
      id="x_0e9ea08d-85e8-4635-9fda-52bc1ec4cb52"
      unitRef="pure">0.1179</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000013328_01Jan2020_31Dec2024"
      decimals="4"
      id="x_47c8a78e-7a04-4447-bd75-355d023036be"
      unitRef="pure">0.0314</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000013328_01Jan2015_31Dec2024"
      decimals="4"
      id="d5bce143-9b49-4102-b998-6db7994fde01"
      unitRef="pure">0.0488</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000013328_09Jan1998_31Dec2024"
      decimals="4"
      id="x_27a842c8-c445-4a5c-9fd9-e151bebd7f54"
      unitRef="pure">0.0934</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000013328_JPMorganEMBIGlobalDiversifiedMember_01Jan2024_31Dec2024"
      decimals="4"
      id="x_7d6c7bc5-c694-4989-ba63-0f0e3f0ffafe"
      unitRef="pure">0.0654</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000013328_JPMorganEMBIGlobalDiversifiedMember_01Jan2020_31Dec2024"
      decimals="4"
      id="b6fda52e-18af-45db-a85e-56e330a8a2c8"
      unitRef="pure">0.0019</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000013328_JPMorganEMBIGlobalDiversifiedMember_01Jan2015_31Dec2024"
      decimals="4"
      id="a64721d1-975f-40ab-8406-b573105b80d4"
      unitRef="pure">0.0300</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000013328_JPMorganEMBIGlobalDiversifiedMember_09Jan1998_31Dec2024"
      decimals="4"
      id="x_17851b6d-4ce9-4a50-ab18-c495077c111e"
      unitRef="pure">0.0670</oef:AvgAnnlRtrPct>
    <oef:PerfInceptionDate
      contextRef="C000013330"
      id="x_485932e5-9b83-4de8-8af5-b5d31176c4de">2021-07-29</oef:PerfInceptionDate>
    <oef:AvgAnnlRtrPct
      contextRef="C000013330_01Jan2024_31Dec2024"
      decimals="4"
      id="db881086-4c9b-4ab0-8cad-44a69b04408c"
      unitRef="pure">0.1177</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000013330_29Jul2021_31Dec2024"
      decimals="4"
      id="x_81dab2ae-2c46-49ac-afb3-e285bb0f80e5"
      unitRef="pure">0.0226</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000013330_JPMorganEMBIGlobalDiversifiedMember_01Jan2024_31Dec2024"
      decimals="4"
      id="e8c69bf9-0bbd-4980-ab3c-b25a66e464e9"
      unitRef="pure">0.0654</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000013330_JPMorganEMBIGlobalDiversifiedMember_29Jul2021_31Dec2024"
      decimals="4"
      id="x_6918b9e8-a7dd-4744-a537-0ee43de12109"
      unitRef="pure">-0.0123</oef:AvgAnnlRtrPct>
    <oef:ObjectiveHeading
      contextRef="S000068930"
      id="x_5589e862-b5bd-43bc-b285-31ee52bab06f">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-weight:bold;"&gt;Investment objective&lt;/span&gt;</oef:ObjectiveHeading>
    <oef:ObjectivePrimaryTextBlock
      contextRef="S000068930"
      id="x_5423b595-70e2-41a2-85d5-88704373443f">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;Total return in excess of that of its benchmark, the J.P. Morgan EMBI Global Diversified.&lt;/span&gt;</oef:ObjectivePrimaryTextBlock>
    <oef:ExpenseHeading
      contextRef="S000068930"
      id="ca9f3f43-15b2-4d8e-98c5-92bef76481f6">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-weight:bold;"&gt;Fees and expenses&lt;/span&gt;</oef:ExpenseHeading>
    <oef:ExpenseNarrativeTextBlock
      contextRef="S000068930"
      id="x_63f8f4c4-7c3f-422d-9bcf-a9b8c5a2d920">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;margin-left:3.76%;"&gt;The tables below describe the fees and expenses that you may bear for each class of shares if you buy, hold, and sell shares of the &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;Fund. You may pay other fees, such as brokerage commissions and other fees to financial intermediaries, which are not reflected in the tables and examples below.&lt;/span&gt;</oef:ExpenseNarrativeTextBlock>
    <oef:ShareholderFeesCaption
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      id="x_24aa8691-6f10-4434-b25e-d69e934d0a73">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-weight:bold;"&gt;Shareholder fees&lt;/span&gt;</oef:ShareholderFeesCaption>
    <oef:MaximumDeferredSalesChargeOverOfferingPrice
      contextRef="S000068930_C000220256"
      decimals="4"
      id="x_5f320c70-b307-4fd5-a7d8-9a92affb2cc2"
      unitRef="pure">0.0000</oef:MaximumDeferredSalesChargeOverOfferingPrice>
    <oef:MaximumDeferredSalesChargeOverOfferingPrice
      contextRef="S000068930_C000220257"
      decimals="4"
      id="x_8aa3394a-c1a8-41a6-8172-66284b538f60"
      unitRef="pure">0.0075</oef:MaximumDeferredSalesChargeOverOfferingPrice>
    <oef:RedemptionFeeOverRedemption
      contextRef="S000068930_C000220256"
      decimals="4"
      id="x_1f4e9fc5-75df-4996-a919-8984b9cdd202"
      unitRef="pure">0.0000</oef:RedemptionFeeOverRedemption>
    <oef:RedemptionFeeOverRedemption
      contextRef="S000068930_C000220257"
      decimals="4"
      id="x_9e3afcc9-061e-4747-9093-33819fe35155"
      unitRef="pure">-0.0075</oef:RedemptionFeeOverRedemption>
    <oef:OperatingExpensesCaption
      contextRef="S000068930"
      id="b2486d2b-215f-4ebf-a214-8b9af611c14f">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-weight:bold;"&gt;Annual Fund operating expenses&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:6.5pt;font-weight:bold;position:relative;top:-2.75pt;"&gt;2&lt;/span&gt; &lt;br/&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;(expenses that you bear each year as a percentage of the value of your investment)&lt;/span&gt;</oef:OperatingExpensesCaption>
    <oef:ManagementFeesOverAssets
      contextRef="S000068930_C000220256"
      decimals="4"
      id="x_8c88f4bd-739f-4669-ba49-04511863e473"
      unitRef="pure">0.0050</oef:ManagementFeesOverAssets>
    <oef:ManagementFeesOverAssets
      contextRef="S000068930_C000220257"
      decimals="4"
      id="x_64b319ce-cda6-4c44-b613-207ebaa7fb3d"
      unitRef="pure">0.0050</oef:ManagementFeesOverAssets>
    <oef:OtherExpensesOverAssets
      contextRef="S000068930_C000220256"
      decimals="4"
      id="x_6153ffcf-ffd0-4ce4-a0c2-ae1031609f0f"
      unitRef="pure">0.0041</oef:OtherExpensesOverAssets>
    <oef:OtherExpensesOverAssets
      contextRef="S000068930_C000220257"
      decimals="4"
      id="x_1d497c7b-2c6c-4388-b4c4-b2ae3547d155"
      unitRef="pure">0.0053</oef:OtherExpensesOverAssets>
    <oef:AcquiredFundFeesAndExpensesOverAssets
      contextRef="S000068930_C000220256"
      decimals="4"
      id="x_038c543e-e02b-42fb-b483-4f25021264ce"
      unitRef="pure">0.0061</oef:AcquiredFundFeesAndExpensesOverAssets>
    <oef:AcquiredFundFeesAndExpensesOverAssets
      contextRef="S000068930_C000220257"
      decimals="4"
      id="a6644357-26ca-4a0a-b6ee-7f783bd33f63"
      unitRef="pure">0.0061</oef:AcquiredFundFeesAndExpensesOverAssets>
    <oef:ExpensesOverAssets
      contextRef="S000068930_C000220256"
      decimals="4"
      id="x_89c4c48a-4606-489f-b90d-296e922e6275"
      unitRef="pure">0.0152</oef:ExpensesOverAssets>
    <oef:ExpensesOverAssets
      contextRef="S000068930_C000220257"
      decimals="4"
      id="x_4c7fa9da-51df-4018-ac6a-69f7b01391e2"
      unitRef="pure">0.0164</oef:ExpensesOverAssets>
    <oef:FeeWaiverOrReimbursementOverAssets
      contextRef="S000068930_C000220256"
      decimals="4"
      id="e8d3528d-1644-4e46-9a72-0537b58e4761"
      unitRef="pure">-0.0089</oef:FeeWaiverOrReimbursementOverAssets>
    <oef:FeeWaiverOrReimbursementOverAssets
      contextRef="S000068930_C000220257"
      decimals="4"
      id="x_844be33d-1362-49d4-ba6f-99baf12dc8ca"
      unitRef="pure">-0.0089</oef:FeeWaiverOrReimbursementOverAssets>
    <oef:NetExpensesOverAssets
      contextRef="S000068930_C000220256"
      decimals="4"
      id="f0db516d-3e57-410a-84af-156b94be9480"
      unitRef="pure">0.0063</oef:NetExpensesOverAssets>
    <oef:NetExpensesOverAssets
      contextRef="S000068930_C000220257"
      decimals="4"
      id="c14e160d-a596-40e7-b22b-ad494751d014"
      unitRef="pure">0.0075</oef:NetExpensesOverAssets>
    <oef:OtherExpensesNewFundBasedOnEstimates
      contextRef="S000068930"
      id="x_047a059e-44a1-4e2c-ae6b-3dd7d25c507f">&lt;span style="color:#000000;font-family:Times New Roman;font-size:8pt;font-style:italic;"&gt;The amounts represent an annualized estimate of the Fund&#x2019;s operating expenses for its initial fiscal year.&lt;/span&gt;</oef:OtherExpensesNewFundBasedOnEstimates>
    <oef:AcquiredFundFeesAndExpensesBasedOnEstimates
      contextRef="S000068930"
      id="b48c2cb6-5ddd-45ec-a79d-93bda0825000">&lt;span style="color:#000000;font-family:Times New Roman;font-size:8pt;font-style:italic;"&gt;The amounts represent an annualized estimate of the Fund&#x2019;s operating expenses for its initial fiscal year.&lt;/span&gt;</oef:AcquiredFundFeesAndExpensesBasedOnEstimates>
    <oef:FeeWaiverOrReimbursementOverAssetsDateOfTermination
      contextRef="S000068930"
      id="x_2ddb3cf8-1a8d-4cf5-bbc8-cd7b3a1a83e3">&lt;span style="color:#000000;font-family:Times New Roman;font-size:8pt;font-style:italic;"&gt;June 30, 2026&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:8pt;font-style:italic;"&gt;June 30, 2026&lt;/span&gt;</oef:FeeWaiverOrReimbursementOverAssetsDateOfTermination>
    <oef:ExpenseExampleHeading
      contextRef="S000068930"
      id="c605c703-37b9-43bf-be59-34d26eee1762">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-weight:bold;"&gt;Example&lt;/span&gt;</oef:ExpenseExampleHeading>
    <oef:ExpenseExampleNarrativeTextBlock
      contextRef="S000068930"
      id="d19d9c81-3270-471d-930e-895cf50eb85e">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;margin-left:3.76%;"&gt;This example is intended to help you compare the cost of investing in the Fund with the cost of investing in other funds. The &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;example assumes that you invest $10,000 in the Fund for the time periods indicated. The example also assumes that your investment has a 5% return each year and that the Fund&#x2019;s operating expenses remain the same as those shown in the table. The one year amounts shown reflect the expense reimbursement and waiver noted in the expense table. Although your actual costs may be higher or lower, based on these assumptions your costs would be:&lt;/span&gt;</oef:ExpenseExampleNarrativeTextBlock>
    <oef:ExpenseExampleByYearCaption
      contextRef="S000068930"
      id="x_1696b216-5ec6-4969-98c6-73737a2550cb">&lt;span style="color:#000000;font-family:Times New Roman;font-size:8pt;font-weight:bold;"&gt;If you sell your shares&lt;/span&gt;</oef:ExpenseExampleByYearCaption>
    <oef:ExpenseExampleNoRedemptionByYearCaption
      contextRef="S000068930"
      id="a7072ff9-035a-486a-9537-14197f6fe6b6">&lt;span style="color:#000000;font-family:Times New Roman;font-size:8pt;font-weight:bold;"&gt;If you do not sell your shares&lt;/span&gt;</oef:ExpenseExampleNoRedemptionByYearCaption>
    <oef:ExpenseExampleYear01
      contextRef="S000068930_C000220256"
      decimals="INF"
      id="x_6ef4b041-8c7c-4f0f-9bca-37370f515234"
      unitRef="USD">217</oef:ExpenseExampleYear01>
    <oef:ExpenseExampleYear03
      contextRef="S000068930_C000220256"
      decimals="INF"
      id="x_327d1887-e44d-43fc-9127-9e107367f4f7"
      unitRef="USD">548</oef:ExpenseExampleYear03>
    <oef:ExpenseExampleNoRedemptionYear01
      contextRef="S000068930_C000220256"
      decimals="INF"
      id="d6b4fec3-f93e-4682-bdee-bfd5b48e61c7"
      unitRef="USD">139</oef:ExpenseExampleNoRedemptionYear01>
    <oef:ExpenseExampleNoRedemptionYear03
      contextRef="S000068930_C000220256"
      decimals="INF"
      id="b84aa1db-5c07-45a2-a385-f712973e61ef"
      unitRef="USD">465</oef:ExpenseExampleNoRedemptionYear03>
    <oef:ExpenseExampleYear01
      contextRef="S000068930_C000220257"
      decimals="INF"
      id="x_0a78514f-39b2-4373-afbf-eaa351329d1a"
      unitRef="USD">229</oef:ExpenseExampleYear01>
    <oef:ExpenseExampleYear03
      contextRef="S000068930_C000220257"
      decimals="INF"
      id="fb5dc397-e50a-430d-92bb-4e5b57dee197"
      unitRef="USD">585</oef:ExpenseExampleYear03>
    <oef:ExpenseExampleNoRedemptionYear01
      contextRef="S000068930_C000220257"
      decimals="INF"
      id="x_8f22187b-7681-467b-bb71-d6a5fb27634f"
      unitRef="USD">151</oef:ExpenseExampleNoRedemptionYear01>
    <oef:ExpenseExampleNoRedemptionYear03
      contextRef="S000068930_C000220257"
      decimals="INF"
      id="c8db2d52-4959-44f6-b7f8-cdcfdd206efe"
      unitRef="USD">502</oef:ExpenseExampleNoRedemptionYear03>
    <oef:PortfolioTurnoverHeading
      contextRef="S000068930"
      id="facca591-b2fa-4f78-b656-49accba1d12b">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-weight:bold;"&gt;Portfolio turnover&lt;/span&gt;</oef:PortfolioTurnoverHeading>
    <oef:PortfolioTurnoverTextBlock
      contextRef="S000068930"
      id="x_2a5544fd-2857-4fe0-a71c-e6266f8787c4">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;margin-left:3.76%;"&gt;The Fund pays transaction costs, such as commissions, when it buys and sells securities. A higher portfolio turnover rate may &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;result in higher transaction costs and, for holders of Fund shares subject to U.S. taxes, higher income taxes. These transaction costs, which are not reflected in Annual Fund operating expenses or in the Example, affect the Fund&#x2019;s performance.&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; Because the Fund had not &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;commenced operations as of the fiscal year ended February 28, 2025, the Fund has no reportable portfolio turnover rate.&lt;/span&gt;</oef:PortfolioTurnoverTextBlock>
    <oef:StrategyHeading
      contextRef="S000068930"
      id="x_39292e5e-964e-467f-94a4-ecc328d2fe99">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-weight:bold;"&gt;Principal investment strategies&lt;/span&gt;</oef:StrategyHeading>
    <oef:StrategyNarrativeTextBlock
      contextRef="S000068930"
      id="c21cc04a-ab93-447e-84da-ca0117705f7a">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;margin-left:3.76%;"&gt;The Fund invests substantially all of its assets in Class III shares of Emerging Country Debt Fund (&#x201c;ECDF&#x201d;). ECDF invests in &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;securities and other instruments. The Fund&#x2019;s investment objective and principal investment strategies are substantially similar to those of ECDF. Except as otherwise indicated, references to the Fund may also refer to ECDF, and references to actions undertaken or investments held by the Fund may also refer to those by ECDF. GMO serves as investment adviser to both the Fund and ECDF.&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;margin-left:3.76%;"&gt;The Fund invests primarily in debt of emerging country sovereign and quasi-sovereign issuers. &#x201c;Sovereign&#x201d; refers to a government &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;and &#x201c;quasi-sovereign&#x201d; refers to a governmental agency, political subdivision or other instrumentality or issuer that is majority owned, directly or indirectly, or whose obligations are guaranteed, by a government. Under normal circumstances, the Fund invests directly and indirectly (e.g., through other GMO Funds or derivatives) at least 80% of its assets in debt investments tied economically to emerging countries (see &#x201c;Name Policies&#x201d;). In general, the Fund considers &#x201c;emerging countries&#x201d; to be countries whose securities are included in the Fund&#x2019;s benchmark or countries that have similar economic and social structures or default histories to those of countries whose securities are included in the Fund&#x2019;s benchmark. The Fund&#x2019;s performance is likely to be more volatile than that of its benchmark.&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;margin-left:3.76%;"&gt;When constructing the Fund&#x2019;s portfolio, GMO considers risk at both the Fund&#x2019;s portfolio and individual security levels and &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;generally takes into account, among other factors, interest rate duration, credit spread duration, liquidity, transaction costs and default scenarios as well as the idiosyncratic risk of each instrument. When making investment decisions, GMO typically relies more heavily on its assessment of the risk-reward characteristics of individual investments in a given country than on its outlook for that particular country. GMO uses fundamental analytical techniques as the basis for its analysis of both individual investments and country outlook. In performing its analysis with respect to country outlook, GMO typically considers a country&#x2019;s economic structure, fiscal sustainability, external liquidity, and certain ESG (environmental, social, and governance) criteria. The factors GMO considers and investment methods GMO uses can change over time.&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;margin-left:3.76%;"&gt;The Fund may invest in debt investments of all credit qualities, including securities that are in default, and may invest in corporate &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;bonds. (The debt investments in which the Fund invests include below investment grade debt investments, which are commonly referred to as &#x201c;high yield&#x201d; or &#x201c;junk bonds,&#x201d; although these terms are not generally used to refer to emerging country debt securities.) The Fund invests in both non-local currency denominated debt (&#x201c;hard currency debt&#x201d;) and, to a lesser extent, local currency denominated debt. The hard currency debt investments in which the Fund invests are usually denominated in U.S. dollars, Euros, Japanese yen, Swiss francs, or British pounds sterling. After hedging, U.S. dollars typically represent at least 75% of the Fund&#x2019;s currency exposures. The Fund typically invests in less liquid debt investments with the intention of holding them for an extended period of time.&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;margin-left:3.76%;"&gt;In seeking to achieve the Fund&#x2019;s investment objective, GMO typically invests a portion of the Fund&#x2019;s assets in over-the-counter &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;(OTC) and exchange-traded derivatives, including options, swap contracts (including interest rate swaps, total return swaps and credit default swaps), forward currency contracts (including forward contracts on currencies of developed markets), and reverse repurchase agreements. The Fund is not limited in its use of derivatives or in the total notional value of its derivative positions. Leverage is not a principal component of the Fund&#x2019;s investment strategy. However, because of its derivative positions, the Fund may at times have gross investment exposure in excess of its net assets (i.e., the Fund may be leveraged) and, therefore, may be subject to a higher risk of loss during those times than if the Fund were not leveraged. The Fund&#x2019;s performance can depend substantially on the performance of assets or indices underlying its derivatives even though it does not own those assets or indices.&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;margin-left:3.76%;"&gt;The Fund also may invest in U.S. Treasury Fund, in money market funds unaffiliated with GMO, and directly in the types of &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;investments typically held by money market funds.&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;margin-left:3.76%;"&gt;GMO normally seeks to maintain an interest rate duration for the Fund that is similar to that of its benchmark (approximately 6.4 &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;years as of May 31, 2025). For an additional discussion of duration, see &#x201c;Additional Information About the Funds&#x2019; Investment Strategies, Risks, and Expenses &#x2014; Bond Funds &#x2014; Duration.&#x201d;&lt;/span&gt;</oef:StrategyNarrativeTextBlock>
    <oef:RiskTextBlock
      contextRef="S000068930_RiskLoseMoneyMember"
      id="x_1e276c15-9792-4748-9b2e-c7c1680d1fb5">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;Many factors can affect this value, and you may lose money by investing in the Fund.&lt;/span&gt;</oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="S000068930_RiskNotInsuredDepositoryInstitutionMember"
      id="x_2b5c3bd8-0851-445e-91fd-941415fefe32">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;An investment in the Fund is not a bank deposit and is not insured or guaranteed by the FDIC or &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;any government agency.&lt;/span&gt;</oef:RiskTextBlock>
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      contextRef="S000068930_CreditRiskMember"
      id="f4852846-4885-4c95-8c05-4cce479f2cac">&lt;span style="color:#000000;font-family:Times New Roman;font-size:8pt;"&gt;&#x25cf;&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-style:italic;"&gt;Credit Risk&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; &#x2013; The Fund runs the risk that the issuer or guarantor of a fixed income investment (including a sovereign or quasi-sovereign debt issuer) or the obligor of an obligation underlying an asset-backed security will be unable or unwilling to satisfy its obligation to pay principal and interest or otherwise to honor its obligations in a timely manner or at all. The market price of a fixed income investment will normally decline as a result of the failure of an issuer, guarantor, or obligor to meet its payment obligations or in anticipation of such a failure. Below investment grade investments (commonly referred to as high yield or &#x201c;junk&#x201d; bonds) have speculative characteristics and are subject to greater credit risk than other fixed income investments. Negative changes in economic conditions or other circumstances are more likely to impair the ability of issuers of below investment grade investments to make principal and interest payments than issuers of investment grade investments.&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; In addition, investments in emerging country sovereign &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;or quasi-sovereign debt are subject to a heightened risk that the issuer responsible for repayment of the debt may be unable or unwilling to pay interest and repay principal when due, and the Fund may lack recourse against the issuer in the event of a default. Investments in quasi-sovereign debt also are subject to the risk that the issuer will default independently of its sovereign.&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;Investments in distressed or defaulted or other low quality debt investments generally are considered speculative and are subject to substantial risks not normally associated with investments in higher quality securities, including adverse business, financial or economic conditions that lead to their issuers&#x2019; payment defaults and insolvency proceedings. In particular, distressed or defaulted obligations might be repaid, if at all, only after lengthy workout or bankruptcy proceedings during which the issuer might not make any interest or other payments, and the Fund may incur additional expenses in its effort to be repaid. If GMO&#x2019;s assessment of the eventual recovery value of a distressed or defaulted debt investment proves incorrect, the Fund may lose a substantial portion or all of its original investment or may be required to accept cash or instruments worth less than its original investment.&lt;/span&gt;</oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="S000068930_MarketRiskFixedIncomeRiskMember"
      id="bfb3d0f9-d760-48be-a448-33ee1fb3e066">&lt;span style="color:#000000;font-family:Times New Roman;font-size:8pt;"&gt;&#x25cf;&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-style:italic;"&gt;Market Risk &#x2013; Fixed Income&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; &#x2013; The market price of a fixed income investment can decline due to market-related factors, including rising interest or inflation rates and widening credit spreads, or decreased liquidity due, for example, to market uncertainty about the value of a fixed income investment (or class of fixed income investments). In addition, the market prices of emerging country sovereign and quasi-sovereign debt investments can decline due to uncertainty about their credit quality and the reliability of their payment streams.&lt;/span&gt;</oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="S000068930_MarketDisruptionandGeopoliticalRiskMember"
      id="d9f4879b-aaf3-4fcf-ad69-f95ab8f2686a">&lt;span style="color:#000000;font-family:Times New Roman;font-size:8pt;"&gt;&#x25cf;&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-style:italic;"&gt;Market Disruption and Geopolitical Risk&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; &#x2013; Geopolitical and other events (e.g., wars, pandemics, sanctions, terrorism, diplomatic tensions, dramatic changes in regulatory and/or foreign policy, cyberattacks, and rapid technological developments such as artificial intelligence) often disrupt securities markets and adversely affect the general economy or particular economies and markets. Those events, as well as other changes in non-U.S. and U.S. economic and political conditions, could exacerbate other risks or otherwise reduce the value of the Fund&#x2019;s investments.&lt;/span&gt;</oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="S000068930_FocusedInvestmentRiskMember"
      id="cd354f12-abd2-4c76-942d-db500bd7b6ea">&lt;span style="color:#000000;font-family:Times New Roman;font-size:8pt;"&gt;&#x25cf;&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-style:italic;"&gt;Focused Investment Risk&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; &#x2013; Investments in countries, regions, asset classes, sectors, industries, currencies, or issuers that are subject to the same or similar risk factors and investments whose market prices are closely correlated are subject to higher overall risk than investments that are more diversified or whose market prices are not as closely correlated.&lt;/span&gt;</oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="S000068930_IlliquidityRiskMember"
      id="f9b97898-8f82-4cf1-a13f-6826703c07ac">&lt;span style="color:#000000;font-family:Times New Roman;font-size:8pt;"&gt;&#x25cf;&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-style:italic;"&gt;Illiquidity Risk&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; &#x2013; Low trading volume, lack of a market maker, large position size, or legal restrictions increase the risk that the Fund or an underlying fund is limited or prevented from selling particular securities or closing derivative positions at desirable prices at a particular time or at all.&lt;/span&gt;</oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="S000068930_DerivativesandShortSalesRiskMember"
      id="x_37f20b60-7fd4-4949-bd1e-611667054f5e">&lt;span style="color:#000000;font-family:Times New Roman;font-size:8pt;"&gt;&#x25cf;&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-style:italic;"&gt;Derivatives and Short Sales Risk&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; &#x2013; The use of derivatives involves the risk that their value may not change as expected relative to changes in the value of the underlying assets, pools of assets, rates, currencies or indices. Derivatives also present other risks, including market risk, illiquidity risk, currency risk, credit risk, leveraging risk, commodities risk and counterparty risk. The market price of an option is affected by many factors, including changes in the market prices or dividend rates of underlying securities (or in the case of indices, the securities in such indices); the time remaining before expiration; changes in interest rates or exchange rates; and changes in the actual or perceived volatility of the relevant index or underlying securities. The Fund typically creates short investment exposure by selling securities short or by taking a derivative position in which the value of the derivative moves in the opposite direction from the price of an underlying asset, pool of assets, rate, currency or index. Specifically, the net asset value of the Fund&#x2019;s shares will be adversely affected if the securities or other assets that are the subject of the Fund&#x2019;s short exposures appreciate in value. The risk of loss associated with derivatives that provide short investment exposure and short sales of securities is theoretically unlimited.&lt;/span&gt;</oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="S000068930_CounterpartyRiskMember"
      id="x_2348a653-23e8-46af-9f61-c6b33490ed0c">&lt;span style="color:#000000;font-family:Times New Roman;font-size:8pt;"&gt;&#x25cf;&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-style:italic;"&gt;Counterparty Risk&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; &#x2013; The Fund runs the risk that the counterparty to a derivatives contract or a clearing member used by the Fund to hold a cleared derivatives contract is unable or unwilling to make timely settlement payments, return the Fund&#x2019;s collateral or otherwise honor its obligations.&lt;/span&gt;</oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="S000068930_NonUSInvestmentRiskMember"
      id="a66d8136-9422-42cc-9b7d-a1e20ad3aa77">&lt;span style="color:#000000;font-family:Times New Roman;font-size:8pt;"&gt;&#x25cf;&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-style:italic;"&gt;Non-U.S. Investment Risk&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; &#x2013; The market prices of many non-U.S. securities fluctuate more than those of U.S. securities. Many non-U.S. securities markets are less stable, smaller, less liquid, and less regulated than U.S. securities markets, and the cost of trading in those markets often is higher than in U.S. securities markets. In addition, non-U.S. securities issuers often are not subject to as much regulation as U.S. issuers, and the reporting, recordkeeping, accounting, custody, and auditing standards to which those issuers are subject often are not as rigorous as U.S. standards. In addition, the Fund is subject to taxation by countries other than the United States, including potentially on a retroactive basis, on (i) capital gains it realizes or dividends, interest, or other amounts it realizes or accrues in respect of non-U.S. investments; (ii) transactions in those investments; and (iii) repatriation of proceeds &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;margin-left:0.00%;"&gt;generated from the sale or other disposition of those investments.&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; Also, the Fund needs a license to invest directly in securities &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;margin-left:0.00%;"&gt;traded in many non-U.S. securities markets, and the Fund is subject to the risk that its license is terminated or suspended. In some non-U.S. securities markets, prevailing custody and trade settlement practices (e.g., the requirement to pay for securities prior to receipt) expose the Fund to credit and other risks. Further, adverse changes in investment regulations, capital requirements or exchange controls could adversely affect the value of the Fund&#x2019;s investments. The risks above (such as substantial price fluctuations and market instability, illiquidity and lack of regulation) and other risks (e.g., nationalization, expropriation or other confiscation of assets of non-U.S. issuers, difficulties enforcing legal judgments or contractual rights and geopolitical risks) tend to be higher for investments in the securities of issuers tied economically to emerging countries. The economies of emerging countries often depend &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;predominantly on only a few industries or commodities and often are more volatile than the economies of developed countries.&lt;/span&gt;</oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="S000068930_LargeTransactionsRiskMember"
      id="f6dba2db-5023-4b56-a704-7f5d91cfb636">&lt;span style="color:#000000;font-family:Times New Roman;font-size:8pt;"&gt;&#x25cf;&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-style:italic;"&gt;Large Transactions Risk&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; &#x2013; To the extent that a large number of shares of the Fund is held by a single shareholder (e.g., an institutional investor or another GMO Fund) or a group of shareholders with a common investment strategy (e.g., GMO asset allocation accounts), the Fund is subject to the risk that a redemption by (or caused by) that shareholder or group will require the Fund to sell investments at disadvantageous prices, disrupt the Fund&#x2019;s operations, lead to temporary overexposure to the Fund&#x2019;s intended investment program or force the Fund&#x2019;s liquidation. The Fund also may be subject to these effects when a number of shareholders collectively redeem or sell a large amount of Fund shares.&lt;/span&gt;</oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="S000068930_CurrencyRiskMember"
      id="a87200c9-7ce8-4ae5-93a8-3313b5ca9f5e">&lt;span style="color:#000000;font-family:Times New Roman;font-size:8pt;"&gt;&#x25cf;&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-style:italic;"&gt;Currency Risk&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; &#x2013; Fluctuations in exchange rates can adversely affect the market value of the Fund&#x2019;s foreign currency holdings and investments denominated in foreign currencies.&lt;/span&gt;</oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="S000068930_ManagementandOperationalRiskMember"
      id="e0ac6715-27a1-48b8-b907-2f73e9d1e198">&lt;span style="color:#000000;font-family:Times New Roman;font-size:8pt;"&gt;&#x25cf;&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-style:italic;"&gt;Management and Operational Risk&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; &#x2013; The Fund runs the risk that GMO&#x2019;s investment techniques will fail to produce intended results.&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;The Fund also runs the risk that GMO&#x2019;s assessment of an investment, including a security&#x2019;s fundamental fair (or intrinsic) value, is wrong or that deficiencies in GMO&#x2019;s or another service provider&#x2019;s internal systems or controls will cause losses for the Fund or impair Fund operations.&lt;/span&gt;</oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="S000068930_FundofFundsRiskMember"
      id="x_1ec06908-9633-45b5-ad01-4a6c7f7e598d">&lt;span style="color:#000000;font-family:Times New Roman;font-size:8pt;"&gt;&#x25cf;&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-style:italic;"&gt;Fund of Funds Risk&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; &#x2013; The Fund is indirectly exposed to all of the risks of an investment in the underlying funds in which it invests, including the risk that those underlying funds will not perform as expected.&lt;/span&gt;</oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="S000068930_LeveragingRiskMember"
      id="x_26969d19-4713-45db-bc56-e80159c3c76c">&lt;span style="color:#000000;font-family:Times New Roman;font-size:8pt;"&gt;&#x25cf;&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-style:italic;"&gt;Leveraging Risk&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; &#x2013; The use of derivatives, short sales and securities lending can create leverage. Leverage increases the Fund&#x2019;s losses when the value of its investments (including derivatives) declines. In addition, the Fund&#x2019;s portfolio will be leveraged if it exercises its right to delay payment on a redemption and the value of the Fund&#x2019;s assets declines between the time a redemption request is treated as being received by the Fund and the time the Fund liquidates assets to fund that redemption.&lt;/span&gt;</oef:RiskTextBlock>
    <oef:BarChartAndPerformanceTableHeading
      contextRef="S000068930"
      id="x_87706b20-d280-40e9-83d6-bf845f77c010">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-weight:bold;"&gt;Performance&lt;/span&gt;</oef:BarChartAndPerformanceTableHeading>
    <oef:PerformanceNarrativeTextBlock
      contextRef="S000068930"
      id="b8d2cb47-6417-462a-99c6-6cb5fea9b732">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;margin-left:3.76%;"&gt;The bar chart and table below provide some indication of the risks of investing in the Fund by showing changes in the Fund&#x2019;s &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;annual total returns from year to year for the periods indicated and by comparing the Fund&#x2019;s average annual total returns for different calendar periods with those of a composite index computed by GMO that tracks historical changes in ECDF&#x2019;s benchmark (a broad-based securities market index) over time.&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; As of the date of this Prospectus, the Fund had not commenced operations. &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-weight:bold;"&gt;Returns shown are those of ECDF (Class III shares), adjusted to reflect the gross expenses (on a percentage basis) that are expected to be borne by shareholders of each class of shares of the Fund, as reflected in the Annual Fund operating expenses table.&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; The impact of ECDF&#x2019;s purchase premiums and redemption fees are not reflected in the bar chart, but are reflected in the table; as a result, the returns in the table are lower than the returns in the bar chart. Returns in the table reflect the impact of ECDF&#x2019;s current purchase premiums and redemption fees. &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;After-tax returns are calculated using the historical highest individual federal marginal income tax rates and do not &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;reflect the impact of state and local taxes.&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; Actual after-tax returns depend on your tax situation and may differ from those shown. After-tax&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; returns shown are not relevant if you are tax-exempt or if you hold your Fund shares through tax-advantaged arrangements (such as a 401(k) plan or individual retirement account). &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;After-tax returns are shown for Class I shares only; after-tax returns for other classes &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;will vary.&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; Updated performance information for the Fund and ECDF is or will be (as applicable) available at &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;www.gmo.com&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;. &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;Past performance (before and after taxes) is not an indication of future performance.&lt;/span&gt;</oef:PerformanceNarrativeTextBlock>
    <oef:PerformanceInformationIllustratesVariabilityOfReturns
      contextRef="S000068930"
      id="e0d6f681-652d-4258-b5c2-1e24129936f7">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;margin-left:3.76%;"&gt;The bar chart and table below provide some indication of the risks of investing in the Fund by showing changes in the Fund&#x2019;s &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;annual total returns from year to year for the periods indicated and by comparing the Fund&#x2019;s average annual total returns for different calendar periods with those of a composite index computed by GMO that tracks historical changes in ECDF&#x2019;s benchmark (a broad-based securities market index) over time.&lt;/span&gt;</oef:PerformanceInformationIllustratesVariabilityOfReturns>
    <oef:PerformanceTableUsesHighestFederalRate
      contextRef="S000068930"
      id="x_2980cca0-53ed-4c64-9ff6-6d2bdf1b42dd">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;After-tax returns are calculated using the historical highest individual federal marginal income tax rates and do not &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;reflect the impact of state and local taxes.&lt;/span&gt;</oef:PerformanceTableUsesHighestFederalRate>
    <oef:PerformanceTableNotRelevantToTaxDeferred
      contextRef="S000068930"
      id="x_87752dcf-3e2c-4c57-b864-f32f00e75944">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; Actual after-tax returns depend on your tax situation and may differ from those shown. After-tax&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; returns shown are not relevant if you are tax-exempt or if you hold your Fund shares through tax-advantaged arrangements (such as a 401(k) plan or individual retirement account). &lt;/span&gt;</oef:PerformanceTableNotRelevantToTaxDeferred>
    <oef:PerformanceTableOneClassOfAfterTaxShown
      contextRef="S000068930"
      id="x_84e4c7ad-890c-4a53-b42d-e44189e8e418">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;After-tax returns are shown for Class I shares only; after-tax returns for other classes &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;will vary.&lt;/span&gt;</oef:PerformanceTableOneClassOfAfterTaxShown>
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      id="x_3250793b-0eaf-4fef-840d-9bffa0a00874">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;www.gmo.com&lt;/span&gt;</oef:PerformanceAvailabilityWebSiteAddress>
    <oef:PerformancePastDoesNotIndicateFuture
      contextRef="S000068930"
      id="x_1c7409d7-ee82-405f-b418-4d2431ed8250">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;Past performance (before and after taxes) is not an indication of future performance.&lt;/span&gt;</oef:PerformancePastDoesNotIndicateFuture>
    <oef:BarChartHeading
      contextRef="S000068930"
      id="f51640d1-a6ba-4e04-98b9-3ec7237d4c5b">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-weight:bold;"&gt;Annual Total Returns/Class I Shares&lt;/span&gt; &lt;br/&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;Years Ending December 31&lt;/span&gt;</oef:BarChartHeading>
    <oef:BarChartClosingTextBlock
      contextRef="S000068930"
      id="c4c83816-39a8-47e0-8abf-028009ea2395">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;Highest Quarter:&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;12.51%&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;-sec-ix-hidden:ed9d1bfd-2cda-4381-a1b8-bd8455c3c911"&gt;2Q 2020&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;Lowest Quarter:&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;-14.50%&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;-sec-ix-hidden:x_60acb891-15bb-4b82-9058-ce62d09d52e3"&gt;1Q 2020&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;Year-to-Date:&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;3.54%&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;As of&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;3/31/2025&lt;/span&gt;</oef:BarChartClosingTextBlock>
    <oef:HighestQuarterlyReturnLabel
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      id="f4c0d4a8-fef6-476b-805f-40ec277dfda1">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;Highest Quarter:&lt;/span&gt;</oef:HighestQuarterlyReturnLabel>
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      contextRef="S000068930_C000220257"
      decimals="4"
      id="x_8f3746c2-c0de-499f-937b-0696b03cd514"
      unitRef="pure">0.1251</oef:BarChartHighestQuarterlyReturn>
    <oef:LowestQuarterlyReturnLabel
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      id="a47e4f68-4076-43f1-9a46-3c870c298dee">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;Lowest Quarter:&lt;/span&gt;</oef:LowestQuarterlyReturnLabel>
    <oef:BarChartLowestQuarterlyReturn
      contextRef="S000068930_C000220257"
      decimals="4"
      id="edcce82d-767f-4dfd-b030-918248e4c1f9"
      unitRef="pure">-0.1450</oef:BarChartLowestQuarterlyReturn>
    <oef:YearToDateReturnLabel
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      id="x_60f9316a-e9d7-4c3e-bcca-4e0201fb672e">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;Year-to-Date:&lt;/span&gt;</oef:YearToDateReturnLabel>
    <oef:BarChartYearToDateReturn
      contextRef="S000068930_C000220257"
      decimals="4"
      id="a24b9ec1-5977-45b0-af23-d373bf9c0768"
      unitRef="pure">0.0354</oef:BarChartYearToDateReturn>
    <oef:BarChartYearToDateReturnDate
      contextRef="S000068930_C000220257"
      id="aa57246e-a365-4e46-a4a2-37268788c52f">2025-03-31</oef:BarChartYearToDateReturnDate>
    <oef:PerformanceTableHeading
      contextRef="S000068930"
      id="efc6eee2-e94b-447c-bdab-0177e3846ed2">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-weight:bold;"&gt;Average Annual Total Returns&lt;/span&gt; &lt;br/&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;Periods Ending December 31, 2024&lt;/span&gt;</oef:PerformanceTableHeading>
    <oef:PerfInceptionDate
      contextRef="C000220257"
      id="x_56fc2aa0-9a82-47f4-a682-f374bff0343a">1994-04-19</oef:PerfInceptionDate>
    <oef:AvgAnnlRtrPct
      contextRef="C000220257_01Jan2024_31Dec2024"
      decimals="4"
      id="x_774b7f24-781d-4c5d-90e5-0bc49f7d4916"
      unitRef="pure">0.1154</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000220257_01Jan2020_31Dec2024"
      decimals="4"
      id="x_0716a633-8630-4edf-9f83-7fe4bca12416"
      unitRef="pure">0.0296</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000220257_01Jan2015_31Dec2024"
      decimals="4"
      id="x_299192d9-2753-48ed-ae7a-5c8637a68e49"
      unitRef="pure">0.0472</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000220257_01Jan1995_31Dec2004"
      decimals="4"
      id="x_1dd100e9-39b5-40db-bff7-2a9c60a11b9f"
      unitRef="pure">0.1182</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000220257_AfterTaxesOnDistributionsMember_01Jan2024_31Dec2024"
      decimals="4"
      id="x_5c2ac12b-2401-4b63-a360-b30c77219002"
      unitRef="pure">0.0861</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000220257_AfterTaxesOnDistributionsMember_01Jan2020_31Dec2024"
      decimals="4"
      id="x_0b59c775-17c0-4883-a8a0-a69c48b4793a"
      unitRef="pure">-0.0094</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000220257_AfterTaxesOnDistributionsMember_01Jan2015_31Dec2024"
      decimals="4"
      id="x_19f55480-af8c-4a49-8eda-cdd6102d0333"
      unitRef="pure">0.0115</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000220257_AfterTaxesOnDistributionsMember_01Jan1995_31Dec2004"
      decimals="4"
      id="x_123368fe-1548-4783-915c-e0ee12af87dc"
      unitRef="pure">0.0691</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000220257_AfterTaxesOnDistributionsAndSalesMember_01Jan2024_31Dec2024"
      decimals="4"
      id="x_94b36b55-5908-47c4-893b-f7c22dab74ff"
      unitRef="pure">0.0686</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000220257_AfterTaxesOnDistributionsAndSalesMember_01Jan2020_31Dec2024"
      decimals="4"
      id="x_181e2ada-9dab-401b-9a03-3cd81cd59918"
      unitRef="pure">0.0056</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000220257_AfterTaxesOnDistributionsAndSalesMember_01Jan2015_31Dec2024"
      decimals="4"
      id="x_7ae2f758-9087-4775-bf96-5e58f8c85fe7"
      unitRef="pure">0.0202</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000220257_AfterTaxesOnDistributionsAndSalesMember_01Jan1995_31Dec2004"
      decimals="4"
      id="x_03080a04-d544-40aa-9b3b-7874b82e262f"
      unitRef="pure">0.0725</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000220257_JPMorganEMBIGlobalDiversifiedMember_01Jan2024_31Dec2024"
      decimals="4"
      id="x_6114a4c4-ec59-4d7b-b514-6b204d2fec93"
      unitRef="pure">0.0654</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000220257_JPMorganEMBIGlobalDiversifiedMember_01Jan2020_31Dec2024"
      decimals="4"
      id="x_7da697d2-3abc-4a8e-9bb7-162a4e7e81e4"
      unitRef="pure">0.0019</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000220257_JPMorganEMBIGlobalDiversifiedMember_01Jan2015_31Dec2024"
      decimals="4"
      id="x_599a2af7-9123-4937-9d2b-fbc6693372a1"
      unitRef="pure">0.0300</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000220257_JPMorganEMBIGlobalDiversifiedMember_01Jan1995_31Dec2004"
      decimals="4"
      id="x_415f1cd5-e410-4b9d-9cd3-1b2d2fed504d"
      unitRef="pure">0.0821</oef:AvgAnnlRtrPct>
    <oef:PerfInceptionDate
      contextRef="C000220256"
      id="d90c1bc0-880e-4a69-b8af-f43f5933640a">1994-04-19</oef:PerfInceptionDate>
    <oef:AvgAnnlRtrPct
      contextRef="C000220256_01Jan2024_31Dec2024"
      decimals="4"
      id="x_324f60c7-c1db-4bd1-9fc7-c3e982e28be7"
      unitRef="pure">0.1165</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000220256_01Jan2020_31Dec2024"
      decimals="4"
      id="e9a36065-e7c0-42ae-9b16-591941ac8eb7"
      unitRef="pure">0.0306</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000220256_01Jan2015_31Dec2024"
      decimals="4"
      id="a0273e19-fd70-485a-9776-c3bc80ab3817"
      unitRef="pure">0.0482</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000220256_01Jan1995_31Dec2004"
      decimals="4"
      id="x_405633e0-90e4-45af-8812-db3ae25b4c0a"
      unitRef="pure">0.1193</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000220256_JPMorganEMBIGlobalDiversifiedMember_01Jan2024_31Dec2024"
      decimals="4"
      id="d50a052c-6454-4564-94c9-3bace538c19a"
      unitRef="pure">0.0654</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000220256_JPMorganEMBIGlobalDiversifiedMember_01Jan2020_31Dec2024"
      decimals="4"
      id="x_3cf7dd24-f91c-4028-b60e-21159294acf7"
      unitRef="pure">0.0019</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000220256_JPMorganEMBIGlobalDiversifiedMember_01Jan2015_31Dec2024"
      decimals="4"
      id="x_893a7e34-f924-4c45-8828-6c0e3fc84e9f"
      unitRef="pure">0.0300</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000220256_JPMorganEMBIGlobalDiversifiedMember_01Jan1995_31Dec2004"
      decimals="4"
      id="f64f0612-e97a-4556-a153-e8f6d2b110dc"
      unitRef="pure">0.0821</oef:AvgAnnlRtrPct>
    <oef:ObjectiveHeading
      contextRef="S000103783"
      id="d68dafd7-a031-48ec-beee-a62e3ee24328">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-weight:bold;"&gt;Investment objective&lt;/span&gt;</oef:ObjectiveHeading>
    <oef:ObjectivePrimaryTextBlock
      contextRef="S000103783"
      id="x_6e459490-507d-4c15-9cc8-ea6dc0ccd963">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;Positive total return.&lt;/span&gt;</oef:ObjectivePrimaryTextBlock>
    <oef:ExpenseHeading
      contextRef="S000103783"
      id="x_7014f4e2-ce2f-4a55-85dc-3df541c2931d">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-weight:bold;"&gt;Fees and expenses&lt;/span&gt;</oef:ExpenseHeading>
    <oef:ExpenseNarrativeTextBlock
      contextRef="S000103783"
      id="ed3cd85f-0c30-4a9a-aedc-015cd4beb780">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;margin-left:3.76%;"&gt;The table below describes the fees and expenses that you may bear for each class of shares if you buy, hold, and sell shares of the &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;Fund. You may pay other fees, such as brokerage commissions and other fees to financial intermediaries, which are not reflected in the table and example below.&lt;/span&gt;</oef:ExpenseNarrativeTextBlock>
    <oef:OperatingExpensesCaption
      contextRef="S000103783"
      id="x_853a9e34-91ea-4b4f-8bd7-11be12de19a9">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-weight:bold;"&gt;Annual Fund operating expenses&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:6.5pt;font-weight:bold;position:relative;top:-2.75pt;"&gt;1&lt;/span&gt; &lt;br/&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;(expenses that you bear each year as a percentage of the value of your investment)&lt;/span&gt;</oef:OperatingExpensesCaption>
    <oef:ManagementFeesOverAssets
      contextRef="S000103783_C000274378"
      decimals="4"
      id="ca20063e-dbed-468c-8093-191f90d4bd4b"
      unitRef="pure">0.0060</oef:ManagementFeesOverAssets>
    <oef:ManagementFeesOverAssets
      contextRef="S000103783_C000274381"
      decimals="4"
      id="dd29fa19-c759-4d4b-a4fa-72c54df304a1"
      unitRef="pure">0.0055</oef:ManagementFeesOverAssets>
    <oef:ManagementFeesOverAssets
      contextRef="S000103783_C000274380"
      decimals="5"
      id="x_9d148d6d-6dce-48c8-b01b-aa6c80a56023"
      unitRef="pure">0.00535</oef:ManagementFeesOverAssets>
    <oef:ManagementFeesOverAssets
      contextRef="S000103783_C000274379"
      decimals="5"
      id="e09fc031-10c5-4f57-92e6-6a22cb3ce97f"
      unitRef="pure">0.00505</oef:ManagementFeesOverAssets>
    <oef:ManagementFeesOverAssets
      contextRef="S000103783_C000274377"
      decimals="4"
      id="c785a50f-3843-427e-82c9-a1d5bfd411c6"
      unitRef="pure">0.0060</oef:ManagementFeesOverAssets>
    <oef:ManagementFeesOverAssets
      contextRef="S000103783_C000274376"
      decimals="4"
      id="x_70076466-cc79-43bd-9d98-7d4b1eaa7b28"
      unitRef="pure">0.0060</oef:ManagementFeesOverAssets>
    <oef:OtherExpensesOverAssets
      contextRef="S000103783_C000274378"
      decimals="4"
      id="x_274eb470-1248-4c2e-b16d-d0ff409c5011"
      unitRef="pure">0.0058</oef:OtherExpensesOverAssets>
    <oef:OtherExpensesOverAssets
      contextRef="S000103783_C000274381"
      decimals="4"
      id="e46b1715-ab02-47c0-8b4e-c1b069b88d4d"
      unitRef="pure">0.0058</oef:OtherExpensesOverAssets>
    <oef:OtherExpensesOverAssets
      contextRef="S000103783_C000274380"
      decimals="4"
      id="x_158fd8c2-1431-4d22-813b-eb57ec88fd63"
      unitRef="pure">0.0058</oef:OtherExpensesOverAssets>
    <oef:OtherExpensesOverAssets
      contextRef="S000103783_C000274379"
      decimals="4"
      id="x_76c810ff-5a16-4413-ab0a-89a02dbced4b"
      unitRef="pure">0.0058</oef:OtherExpensesOverAssets>
    <oef:OtherExpensesOverAssets
      contextRef="S000103783_C000274377"
      decimals="4"
      id="x_53032e12-69a8-4d1c-87a1-bbd381fc8e61"
      unitRef="pure">0.0058</oef:OtherExpensesOverAssets>
    <oef:OtherExpensesOverAssets
      contextRef="S000103783_C000274376"
      decimals="4"
      id="x_5c34db8b-bfaf-4b45-8029-2aeb78d3acf1"
      unitRef="pure">0.0073</oef:OtherExpensesOverAssets>
    <oef:ExpensesOverAssets
      contextRef="S000103783_C000274378"
      decimals="4"
      id="x_08663912-a4d8-41ec-b649-a48843b01ecb"
      unitRef="pure">0.0118</oef:ExpensesOverAssets>
    <oef:ExpensesOverAssets
      contextRef="S000103783_C000274381"
      decimals="4"
      id="x_24da41fc-9ac8-4964-818f-ff3daa9a5940"
      unitRef="pure">0.0113</oef:ExpensesOverAssets>
    <oef:ExpensesOverAssets
      contextRef="S000103783_C000274380"
      decimals="4"
      id="f7647f11-94d5-4a1c-8e44-d3790d5f96fd"
      unitRef="pure">0.0112</oef:ExpensesOverAssets>
    <oef:ExpensesOverAssets
      contextRef="S000103783_C000274379"
      decimals="4"
      id="c1b970f0-8277-4521-a0db-4b00b9e3078e"
      unitRef="pure">0.0109</oef:ExpensesOverAssets>
    <oef:ExpensesOverAssets
      contextRef="S000103783_C000274377"
      decimals="4"
      id="x_2609906b-6ab5-4d73-8019-8449e62c075a"
      unitRef="pure">0.0118</oef:ExpensesOverAssets>
    <oef:ExpensesOverAssets
      contextRef="S000103783_C000274376"
      decimals="4"
      id="x_57f9db74-566b-4d2c-bb1f-3a843772311f"
      unitRef="pure">0.0133</oef:ExpensesOverAssets>
    <oef:FeeWaiverOrReimbursementOverAssets
      contextRef="S000103783_C000274378"
      decimals="4"
      id="f9d3419b-7374-42e0-9f95-30c10a3907ca"
      unitRef="pure">-0.0048</oef:FeeWaiverOrReimbursementOverAssets>
    <oef:FeeWaiverOrReimbursementOverAssets
      contextRef="S000103783_C000274381"
      decimals="4"
      id="x_83592b2a-369d-4c4e-8975-8d39c2e43bb5"
      unitRef="pure">-0.0048</oef:FeeWaiverOrReimbursementOverAssets>
    <oef:FeeWaiverOrReimbursementOverAssets
      contextRef="S000103783_C000274380"
      decimals="4"
      id="e73464ad-c6d5-46e4-843b-ff0865387a29"
      unitRef="pure">-0.0048</oef:FeeWaiverOrReimbursementOverAssets>
    <oef:FeeWaiverOrReimbursementOverAssets
      contextRef="S000103783_C000274379"
      decimals="4"
      id="x_503848f5-4cfa-4c12-8704-411fb06e6beb"
      unitRef="pure">-0.0048</oef:FeeWaiverOrReimbursementOverAssets>
    <oef:FeeWaiverOrReimbursementOverAssets
      contextRef="S000103783_C000274377"
      decimals="4"
      id="x_4336ad48-772b-47e6-a64c-8b39f1481aa5"
      unitRef="pure">-0.0048</oef:FeeWaiverOrReimbursementOverAssets>
    <oef:FeeWaiverOrReimbursementOverAssets
      contextRef="S000103783_C000274376"
      decimals="4"
      id="x_80e442dc-ef3d-4077-8d68-376e87beea9a"
      unitRef="pure">-0.0048</oef:FeeWaiverOrReimbursementOverAssets>
    <oef:NetExpensesOverAssets
      contextRef="S000103783_C000274378"
      decimals="4"
      id="x_9294548a-e761-4743-bf66-b7474390c103"
      unitRef="pure">0.0070</oef:NetExpensesOverAssets>
    <oef:NetExpensesOverAssets
      contextRef="S000103783_C000274381"
      decimals="4"
      id="b6ee5d75-84c5-4c0b-8564-0daaa3569cce"
      unitRef="pure">0.0065</oef:NetExpensesOverAssets>
    <oef:NetExpensesOverAssets
      contextRef="S000103783_C000274380"
      decimals="4"
      id="x_28854c7c-0328-4e19-a3f8-a825d08229dc"
      unitRef="pure">0.0064</oef:NetExpensesOverAssets>
    <oef:NetExpensesOverAssets
      contextRef="S000103783_C000274379"
      decimals="4"
      id="ec6fa45a-c135-4ca8-aaf9-2de779a38993"
      unitRef="pure">0.0061</oef:NetExpensesOverAssets>
    <oef:NetExpensesOverAssets
      contextRef="S000103783_C000274377"
      decimals="4"
      id="x_525dfbca-2a69-4a82-b8d0-ed5f568a5a67"
      unitRef="pure">0.0070</oef:NetExpensesOverAssets>
    <oef:NetExpensesOverAssets
      contextRef="S000103783_C000274376"
      decimals="4"
      id="x_72c8f1d9-91ba-46aa-b286-539d599c2b8e"
      unitRef="pure">0.0085</oef:NetExpensesOverAssets>
    <oef:OtherExpensesNewFundBasedOnEstimates
      contextRef="S000103783"
      id="x_4de95f40-e658-45c7-afb2-2be56f8874cd">&lt;span style="color:#000000;font-family:Times New Roman;font-size:8pt;font-style:italic;"&gt;The amounts represent an annualized estimate of the Fund&#x2019;s operating expenses for its initial fiscal year.&lt;/span&gt;</oef:OtherExpensesNewFundBasedOnEstimates>
    <oef:AcquiredFundFeesAndExpensesBasedOnEstimates
      contextRef="S000103783"
      id="e431ab85-6a9f-419c-87e3-b37a0193eb81">&lt;span style="color:#000000;font-family:Times New Roman;font-size:8pt;font-style:italic;"&gt;The amounts represent an annualized estimate of the Fund&#x2019;s operating expenses for its initial fiscal year.&lt;/span&gt;</oef:AcquiredFundFeesAndExpensesBasedOnEstimates>
    <oef:FeeWaiverOrReimbursementOverAssetsDateOfTermination
      contextRef="S000103783"
      id="a727ac13-740a-4ccc-a1d5-19f4ffb5a14f">&lt;span style="color:#000000;font-family:Times New Roman;font-size:8pt;font-style:italic;"&gt;April 30, 2027&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:8pt;font-style:italic;"&gt;April 30, 2027&lt;/span&gt;</oef:FeeWaiverOrReimbursementOverAssetsDateOfTermination>
    <oef:ExpenseExampleHeading
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      id="x_0edf8abb-a73f-42cb-b657-2df503ccbfe4">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-weight:bold;"&gt;Example&lt;/span&gt;</oef:ExpenseExampleHeading>
    <oef:ExpenseExampleNarrativeTextBlock
      contextRef="S000103783"
      id="x_5b662c24-4d62-4044-832c-04496d38cbf8">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;margin-left:3.76%;"&gt;This example is intended to help you compare the cost of investing in the Fund with the cost of investing in other funds. The &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;example assumes that you invest $10,000 in the Fund for the time periods indicated. The example also assumes that your investment has a 5% return each year and that the Fund&#x2019;s operating expenses remain the same as those shown in the table. The one year amounts shown reflect the expense waiver noted in the expense table. Although your actual costs may be higher or lower, based on these assumptions your costs would be:&lt;/span&gt;</oef:ExpenseExampleNarrativeTextBlock>
    <oef:ExpenseExampleYear01
      contextRef="S000103783_C000274378"
      decimals="INF"
      id="x_1d145a5b-94c4-4151-a1f7-bb9495fe8b02"
      unitRef="USD">72</oef:ExpenseExampleYear01>
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      contextRef="S000103783_C000274378"
      decimals="INF"
      id="x_1a5a5b54-372e-4b94-80f2-f6412c906a4c"
      unitRef="USD">327</oef:ExpenseExampleYear03>
    <oef:ExpenseExampleYear01
      contextRef="S000103783_C000274381"
      decimals="INF"
      id="x_3acdc168-c78e-48dd-b8f2-20216754d33f"
      unitRef="USD">66</oef:ExpenseExampleYear01>
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      contextRef="S000103783_C000274381"
      decimals="INF"
      id="c58263ab-7593-4c5f-9ef8-3246b459fec1"
      unitRef="USD">311</oef:ExpenseExampleYear03>
    <oef:ExpenseExampleYear01
      contextRef="S000103783_C000274380"
      decimals="INF"
      id="x_1b41bcf9-abf7-46a2-997b-d37804401635"
      unitRef="USD">65</oef:ExpenseExampleYear01>
    <oef:ExpenseExampleYear03
      contextRef="S000103783_C000274380"
      decimals="INF"
      id="b58eaa9f-1656-4293-9129-1be1aefa93c9"
      unitRef="USD">308</oef:ExpenseExampleYear03>
    <oef:ExpenseExampleYear01
      contextRef="S000103783_C000274379"
      decimals="INF"
      id="f90f0c37-7cd9-44f4-b2b2-450e9de1bc64"
      unitRef="USD">62</oef:ExpenseExampleYear01>
    <oef:ExpenseExampleYear03
      contextRef="S000103783_C000274379"
      decimals="INF"
      id="x_5787d455-2c6b-4440-9870-2138f8082b1c"
      unitRef="USD">299</oef:ExpenseExampleYear03>
    <oef:ExpenseExampleYear01
      contextRef="S000103783_C000274377"
      decimals="INF"
      id="x_9247421a-82bd-4b1c-bf53-bb3cd624d6b8"
      unitRef="USD">72</oef:ExpenseExampleYear01>
    <oef:ExpenseExampleYear03
      contextRef="S000103783_C000274377"
      decimals="INF"
      id="cb8c2a9d-f587-48b5-aabd-404d1a44e84c"
      unitRef="USD">327</oef:ExpenseExampleYear03>
    <oef:ExpenseExampleYear01
      contextRef="S000103783_C000274376"
      decimals="INF"
      id="b4a0dd75-9a90-4862-9a9e-c1ad673e6fec"
      unitRef="USD">87</oef:ExpenseExampleYear01>
    <oef:ExpenseExampleYear03
      contextRef="S000103783_C000274376"
      decimals="INF"
      id="x_913ed26c-45a5-4d87-8f0a-9872983de60c"
      unitRef="USD">374</oef:ExpenseExampleYear03>
    <oef:PortfolioTurnoverHeading
      contextRef="S000103783"
      id="x_427ca5e4-b1fe-4633-abb1-1c03c18ff770">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-weight:bold;"&gt;Portfolio turnover&lt;/span&gt;</oef:PortfolioTurnoverHeading>
    <oef:PortfolioTurnoverTextBlock
      contextRef="S000103783"
      id="x_84a5afd8-836d-46dd-9b2b-ad017ccfa1c0">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;margin-left:3.76%;"&gt;The Fund pays transaction costs, such as commissions, when it buys and sells securities. A higher portfolio turnover rate may &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;result in higher transaction costs and, for holders of Fund shares subject to U.S. taxes, higher income taxes. These transaction costs, &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;margin-left:0%;"&gt;which are not reflected in Annual Fund operating expenses or in the Example, affect the Fund&#x2019;s performance.&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; Because the Fund had not commenced operations as of the fiscal year ended February 28, 2025, the Fund has no reportable portfolio turnover rate.&lt;/span&gt;</oef:PortfolioTurnoverTextBlock>
    <oef:StrategyHeading
      contextRef="S000103783"
      id="d9ae4f8c-d642-447f-b2a2-8c894bfecbd8">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-weight:bold;"&gt;Principal investment strategies&lt;/span&gt;</oef:StrategyHeading>
    <oef:StrategyNarrativeTextBlock
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      id="x_1825a1c7-d303-4249-b06b-8bb67c35a443">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;margin-left:3.76%;"&gt;The Fund seeks annualized returns of 3% (net of fees) above the Secured Overnight Financing Rate (SOFR) over a complete &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;market cycle by investing primarily in debt of emerging markets sovereign and corporate issuers and in emerging markets credit, currency, and interest rate derivatives. &#x201c;Sovereign&#x201d; refers to a government, and &#x201c;quasi-sovereign&#x201d; refers to a governmental agency, political subdivision or other instrumentality or corporate issuer that is majority owned, directly or indirectly, or whose obligations are guaranteed, by or derived from a government. The Fund can invest in both local currency denominated debt (&#x201c;local debt&#x201d;) and non-local currency denominated debt (&#x201c;hard currency debt&#x201d;) and may have significant exposure to both at any given time. &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;margin-left:3.76%;"&gt;In constructing the Fund&#x2019;s portfolio, GMO uses fundamental analytical techniques to select country credit, corporate credit, &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;currency, interest-rate, and individual bond and derivative instruments. For country credit selection, GMO considers a country&#x2019;s economic structure, fiscal sustainability, external liquidity, and certain ESG (environmental, social, and governance) criteria. For corporate credit selection, GMO focuses on quasi-sovereign credits and considers the stand-alone credit quality of the issuer, its relationship to the local government, and any idiosyncratic risks of the bond and issuer. In selecting individual bonds, GMO considers the bond-specific characteristics, such as the coupon rate, seniority and yield. With respect to local currency investments, GMO considers the nature of the currency (i.e., floating-rate or pegged), a country&#x2019;s economic cycle, market sentiment (for floating rate currencies) and valuation-based factors (for pegged currencies). With respect to local currency interest rates, GMO considers real yields and its assessment of fundamental fair values. &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;margin-left:3.76%;"&gt;GMO considers risk at both the Fund&#x2019;s portfolio and individual security level and generally takes into account, among other &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;factors, U.S. dollar and local currency interest rate duration, credit spread duration, currency exposure, liquidity, transaction costs and sovereign and corporate default scenarios. The factors GMO considers and investment methods GMO uses can change over time. &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;margin-left:3.76%;"&gt;The Fund may invest in debt investments of all credit qualities, including securities that are in default. (The debt investments in &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;which the Fund invests include below investment grade debt investments, which are commonly referred to as &#x201c;high yield&#x201d; or &#x201c;junk bonds,&#x201d; although these terms are not generally used to refer to emerging market debt securities.) The hard currency debt investments in which the Fund invests are usually denominated in U.S. dollars, Euros, Japanese yen, Swiss francs, or British pounds sterling. The Fund may invest in less liquid debt investments with the intention of holding them for an extended period of time. &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;margin-left:3.76%;"&gt;Under normal circumstances, the Fund invests directly and indirectly (e.g., through other GMO Funds or derivatives) at least 80% &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;of its assets in debt investments tied economically to emerging markets (see &#x201c;Name Policies&#x201d;). In general, the Fund considers &#x201c;emerging markets&#x201d; to include countries included in the Bloomberg EM USD Aggregate Index or countries that have similar economic and social structures or default histories to those of countries in the Bloomberg EM USD Aggregate Index. GMO does not manage the Fund to, or control the Fund&#x2019;s risk relative to, any securities index or securities benchmark. &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;margin-left:3.76%;"&gt;In seeking to achieve the Fund&#x2019;s investment objective, GMO typically invests a portion of the Fund&#x2019;s assets in over-the-counter &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;(OTC) and exchange-traded derivatives, including options, swap contracts (including interest rate swaps, total return swaps and credit default swaps), forward currency contracts (including forward contracts on currencies of developed markets), and reverse repurchase agreements. The Fund is not limited in its use of derivatives or in the total notional value of its derivative positions. The Fund may also engage in short sales. Leverage is not a principal component of the Fund&#x2019;s investment strategy. However, because of its derivative positions, the Fund may at times have gross investment exposure in excess of its net assets (i.e., the Fund may be leveraged) and, therefore, may be subject to a higher risk of loss during those times than if the Fund were not leveraged. The Fund&#x2019;s performance can depend substantially on the performance of assets or indices underlying its derivatives even though it does not own those assets or indices. &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;margin-left:3.76%;"&gt;The Fund also may invest in U.S. Treasury Fund, in money market funds unaffiliated with GMO, and directly in the types of &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;investments typically held by money market funds. GMO does not seek to maintain a specified interest rate duration for the Fund. For an additional discussion of duration, see &#x201c;Additional Information About the Funds&#x2019; Investment Strategies, Risks, and Expenses &#x2014; Bond Funds &#x2014; Duration.&#x201d;&lt;/span&gt;</oef:StrategyNarrativeTextBlock>
    <oef:RiskTextBlock
      contextRef="S000103783_RiskLoseMoneyMember"
      id="b5d68b1c-aaaa-4d48-8174-a0458538d5d5">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;Many factors can affect this value, and you may lose money by investing in the Fund.&lt;/span&gt;</oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="S000103783_RiskNotInsuredDepositoryInstitutionMember"
      id="x_4fdeea49-f56b-45b4-b057-8b74a9aae95a">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;An investment in the Fund is not a bank deposit and is not insured or guaranteed by the FDIC or &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;any government agency.&lt;/span&gt;</oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="S000103783_CreditRiskMember"
      id="x_5bc3e503-eaa4-461d-bfbc-6070aab4e9eb">&lt;span style="color:#000000;font-family:Times New Roman;font-size:8pt;"&gt;&#x25cf;&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-style:italic;"&gt;Credit Risk&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; &#x2013; The Fund runs the risk that the issuer or guarantor of a fixed income investment (including a sovereign or quasi-sovereign debt issuer) or the obligor of an obligation underlying an asset-backed security will be unable or unwilling to satisfy its obligation to pay principal and interest or otherwise to honor its obligations in a timely manner or at all. The market price of a fixed income investment will normally decline as a result of the failure of an issuer, guarantor, or obligor to meet its payment obligations or in anticipation of such a failure. Below investment grade investments (commonly referred to as high yield or &#x201c;junk&#x201d; bonds) have speculative characteristics and are subject to greater credit risk than other fixed income investments. Negative changes in economic conditions or other circumstances are more likely to impair the ability of issuers of below investment grade investments to make principal and interest payments than issuers of investment grade investments.&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; In addition, investments in emerging markets &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;sovereign or quasi-sovereign debt are subject to a heightened risk that the issuer responsible for repayment of the debt may be unable or unwilling to pay interest and repay principal when due, and the Fund may lack recourse against the issuer in the event of a default. Investments in quasi-sovereign debt also are subject to the risk that the issuer will default independently of its sovereign.&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;Investments in distressed or defaulted or other low quality debt investments generally are considered speculative and are subject to substantial risks not normally associated with investments in higher quality securities, including adverse business, financial or economic conditions that lead to their issuers&#x2019; payment defaults and insolvency proceedings. In particular, distressed or defaulted obligations might be repaid, if at all, only after lengthy workout or bankruptcy proceedings during which the issuer might not make any interest or other payments, and the Fund may incur additional expenses in its effort to be repaid. If GMO&#x2019;s assessment of the eventual recovery value of a distressed or defaulted debt investment proves incorrect, the Fund may lose a substantial portion or all of its original investment or may be required to accept cash or instruments worth less than its original investment.&lt;/span&gt;</oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="S000103783_CurrencyRiskMember"
      id="x_3b200fc5-356d-4b6d-956f-5b98eca2c6a3">&lt;span style="color:#000000;font-family:Times New Roman;font-size:8pt;"&gt;&#x25cf;&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-style:italic;"&gt;Currency Risk&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; &#x2013; Fluctuations in exchange rates can adversely affect the market value of the Fund&#x2019;s foreign currency holdings and investments denominated in foreign currencies.&lt;/span&gt;</oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="S000103783_MarketRiskFixedIncomeRiskMember"
      id="x_7445d9f6-bd97-42e3-a9b0-256000e10b62">&lt;span style="color:#000000;font-family:Times New Roman;font-size:8pt;"&gt;&#x25cf;&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-style:italic;"&gt;Market Risk &#x2013; Fixed Income&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; &#x2013; The market price of a fixed income investment can decline due to market-related factors, including rising interest or inflation rates and widening credit spreads, or decreased liquidity due, for example, to market uncertainty about the value of a fixed income investment (or class of fixed income investments). In addition, the market prices of emerging markets sovereign and quasi-sovereign debt investments can decline due to uncertainty about their credit quality and the reliability of their payment streams.&lt;/span&gt;</oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="S000103783_MarketDisruptionandGeopoliticalRiskMember"
      id="b9ab8f61-3cbb-48b4-a154-02580e2e8478">&lt;span style="color:#000000;font-family:Times New Roman;font-size:8pt;"&gt;&#x25cf;&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-style:italic;"&gt;Market Disruption and Geopolitical Risk&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; &#x2013; Geopolitical and other events (e.g., wars, pandemics, sanctions, terrorism, diplomatic tensions, dramatic changes in regulatory and/or foreign policy, cyberattacks, and rapid technological developments such as artificial intelligence) often disrupt securities markets and adversely affect the general economy or particular economies and markets. Those events, as well as other changes in non-U.S. and U.S. economic and political conditions, could exacerbate other risks or otherwise reduce the value of the Fund&#x2019;s investments.&lt;/span&gt;</oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="S000103783_FocusedInvestmentRiskMember"
      id="ac6aff9d-ced8-4758-bc7a-c33808032091">&lt;span style="color:#000000;font-family:Times New Roman;font-size:8pt;"&gt;&#x25cf;&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-style:italic;"&gt;Focused Investment Risk&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; &#x2013; Investments in countries, regions, asset classes, sectors, industries, currencies, or issuers that are subject to the same or similar risk factors and investments whose market prices are closely correlated are subject to higher overall risk than investments that are more diversified or whose market prices are not as closely correlated.&lt;/span&gt;</oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="S000103783_IlliquidityRiskMember"
      id="x_6ddb9ba1-1611-4e78-8435-fd8dd0308910">&lt;span style="color:#000000;font-family:Times New Roman;font-size:8pt;"&gt;&#x25cf;&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-style:italic;"&gt;Illiquidity Risk&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; &#x2013; Low trading volume, lack of a market maker, large position size, or legal restrictions increase the risk that the Fund or an underlying fund is limited or prevented from selling particular securities or closing derivative positions at desirable prices at a particular time or at all.&lt;/span&gt;</oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="S000103783_DerivativesandShortSalesRiskMember"
      id="x_5118fe95-f514-4536-b534-50c3b4406aca">&lt;span style="color:#000000;font-family:Times New Roman;font-size:8pt;"&gt;&#x25cf;&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-style:italic;"&gt;Derivatives and Short Sales Risk&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; &#x2013; The use of derivatives involves the risk that their value may not change as expected relative to changes in the value of the underlying assets, pools of assets, rates, currencies or indices. Derivatives also present other risks, including market risk, illiquidity risk, currency risk, credit risk, leveraging risk, commodities risk and counterparty risk. The market price of an option is affected by many factors, including changes in the market prices or dividend rates of underlying securities (or in the case of indices, the securities in such indices); the time remaining before expiration; changes in interest rates or exchange rates; and changes in the actual or perceived volatility of the relevant index or underlying securities. The Fund typically creates short investment exposure by selling securities short or by taking a derivative position in which the value of the derivative moves in the opposite direction from the price of an underlying asset, pool of assets, rate, currency or index. Specifically, the net asset value of the Fund&#x2019;s shares will be adversely affected if the securities or other assets that are the subject of the Fund&#x2019;s short exposures appreciate in value. The risk of loss associated with derivatives that provide short investment exposure and short sales of securities is theoretically unlimited.&lt;/span&gt;</oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="S000103783_CounterpartyRiskMember"
      id="x_1748c613-01fd-46fd-9b55-43d6e9793fe4">&lt;span style="color:#000000;font-family:Times New Roman;font-size:8pt;"&gt;&#x25cf;&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-style:italic;"&gt;Counterparty Risk&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; &#x2013; The Fund runs the risk that the counterparty to a derivatives contract or a clearing member used by the Fund to hold a cleared derivatives contract is unable or unwilling to make timely settlement payments, return the Fund&#x2019;s collateral or otherwise honor its obligations.&lt;/span&gt;</oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="S000103783_NonUSInvestmentRiskMember"
      id="ff97e023-dba1-48bf-be12-5a7cdf841873">&lt;span style="color:#000000;font-family:Times New Roman;font-size:8pt;"&gt;&#x25cf;&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-style:italic;"&gt;Non-U.S. Investment Risk&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; &#x2013; The market prices of many non-U.S. securities fluctuate more than those of U.S. securities. Many non-U.S. securities markets are less stable, smaller, less liquid, and less regulated than U.S. securities markets, and the cost of trading in those markets often is higher than in U.S. securities markets. In addition, non-U.S. securities issuers often are not subject to as much regulation as U.S. issuers, and the reporting, recordkeeping, accounting, custody, and auditing standards to which those issuers are subject often are not as rigorous as U.S. standards. In addition, the Fund is subject to taxation by countries other than the &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;margin-left:0.00%;"&gt;United States, including potentially on a retroactive basis, on (i) capital gains it realizes or dividends, interest, or other amounts it realizes or accrues in respect of non-U.S. investments; (ii) transactions in those investments; and (iii) repatriation of proceeds generated from the sale or other disposition of those investments.&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; Also, the Fund needs a license to invest directly in securities &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;margin-left:0.00%;"&gt;traded in many non-U.S. securities markets, and the Fund is subject to the risk that its license is terminated or suspended. In some non-U.S. securities markets, prevailing custody and trade settlement practices (e.g., the requirement to pay for securities prior to receipt) expose the Fund to credit and other risks. Further, adverse changes in investment regulations, capital requirements or exchange controls could adversely affect the value of the Fund&#x2019;s investments. The risks above (such as substantial price fluctuations and market instability, illiquidity and lack of regulation) and other risks (e.g., nationalization, expropriation or other confiscation of assets of non-U.S. issuers, difficulties enforcing legal judgments or contractual rights and geopolitical risks) tend to be higher for investments in the securities of issuers tied economically to emerging countries. The economies of emerging countries often depend &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;predominantly on only a few industries or commodities and often are more volatile than the economies of developed countries.&lt;/span&gt;</oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="S000103783_LargeTransactionsRiskMember"
      id="x_2bb19cc9-e829-4fab-b660-7e1698435b21">&lt;span style="color:#000000;font-family:Times New Roman;font-size:8pt;"&gt;&#x25cf;&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-style:italic;"&gt;Large Transactions Risk&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; &#x2013; To the extent that a large number of shares of the Fund is held by a single shareholder (e.g., an institutional investor or another GMO Fund) or a group of shareholders with a common investment strategy (e.g., GMO asset allocation accounts), the Fund is subject to the risk that a redemption by (or caused by) that shareholder or group will require the Fund to sell investments at disadvantageous prices, disrupt the Fund&#x2019;s operations, lead to temporary overexposure to the Fund&#x2019;s intended investment program or force the Fund&#x2019;s liquidation. The Fund also may be subject to these effects when a number of shareholders collectively redeem or sell a large amount of Fund shares.&lt;/span&gt;</oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="S000103783_ManagementandOperationalRiskMember"
      id="x_147067e1-7975-4074-a574-c9c610a554a5">&lt;span style="color:#000000;font-family:Times New Roman;font-size:8pt;"&gt;&#x25cf;&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-style:italic;"&gt;Management and Operational Risk&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; &#x2013; The Fund runs the risk that GMO&#x2019;s investment techniques will fail to produce intended results.&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;The Fund also runs the risk that GMO&#x2019;s assessment of an investment, including a security&#x2019;s fundamental fair (or intrinsic) value, is wrong or that deficiencies in GMO&#x2019;s or another service provider&#x2019;s internal systems or controls will cause losses for the Fund or impair Fund operations.&lt;/span&gt;</oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="S000103783_LeveragingRiskMember"
      id="x_009f4833-41d6-46fe-8ef3-898acb97af15">&lt;span style="color:#000000;font-family:Times New Roman;font-size:8pt;"&gt;&#x25cf;&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-style:italic;"&gt;Leveraging Risk&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; &#x2013; The use of derivatives, short sales and securities lending can create leverage. Leverage increases the Fund&#x2019;s losses when the value of its investments (including derivatives) declines. In addition, the Fund&#x2019;s portfolio will be leveraged if it exercises its right to delay payment on a redemption and the value of the Fund&#x2019;s assets declines between the time a redemption request is treated as being received by the Fund and the time the Fund liquidates assets to fund that redemption.&lt;/span&gt;</oef:RiskTextBlock>
    <oef:BarChartAndPerformanceTableHeading
      contextRef="S000103783"
      id="x_7fabdc44-eece-473c-a7fb-6565c2c91621">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-weight:bold;"&gt;Performance&lt;/span&gt;</oef:BarChartAndPerformanceTableHeading>
    <oef:PerformanceNarrativeTextBlock
      contextRef="S000103783"
      id="ed6351df-46f2-4345-9716-d3ca3be3e26a">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;margin-left:3.76%;"&gt;Because the Fund had not yet completed a full calendar year of operations as of the date of this Prospectus, performance &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;information for the Fund is not included.&lt;/span&gt;</oef:PerformanceNarrativeTextBlock>
    <oef:PerformanceOneYearOrLess
      contextRef="S000103783"
      id="dfecffdc-0fc2-4822-ac2c-67ed95a0978e">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;margin-left:3.76%;"&gt;Because the Fund had not yet completed a full calendar year of operations as of the date of this Prospectus, performance &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;information for the Fund is not included.&lt;/span&gt;</oef:PerformanceOneYearOrLess>
    <oef:ObjectiveHeading
      contextRef="S000061716"
      id="x_28cf67d1-e644-4149-8af8-f27e48c50bcd">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-weight:bold;"&gt;Investment objective&lt;/span&gt;</oef:ObjectiveHeading>
    <oef:ObjectivePrimaryTextBlock
      contextRef="S000061716"
      id="c69e0ddd-3d73-42bb-a786-75aab8825ea5">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;Total return in excess of that of its benchmark, the Markit iBoxx USD Liquid High Yield Index.&lt;/span&gt;</oef:ObjectivePrimaryTextBlock>
    <oef:ExpenseHeading
      contextRef="S000061716"
      id="bcf54cdf-4ad4-4ce2-9fc8-c35107f72043">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-weight:bold;"&gt;Fees and expenses&lt;/span&gt;</oef:ExpenseHeading>
    <oef:ExpenseNarrativeTextBlock
      contextRef="S000061716"
      id="x_2ffd809f-5eab-41fd-bd60-b6c0e3cf278d">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;margin-left:3.76%;"&gt;The table below describes the fees and expenses that you may bear for each class of shares if you buy, hold, and sell shares of the &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;Fund. You may pay other fees, such as brokerage commissions and other fees to financial intermediaries, which are not reflected in the table and example below.&lt;/span&gt;</oef:ExpenseNarrativeTextBlock>
    <oef:OperatingExpensesCaption
      contextRef="S000061716"
      id="cc81452c-09df-4cab-bff0-3c9c894e39b1">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-weight:bold;"&gt;Annual Fund operating expenses &lt;/span&gt; &lt;br/&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;(expenses that you bear each year as a percentage of the value of your investment)&lt;/span&gt;</oef:OperatingExpensesCaption>
    <oef:ManagementFeesOverAssets
      contextRef="S000061716_C000199930"
      decimals="5"
      id="x_72c427fc-cd14-41c8-94ac-4a26c1182e94"
      unitRef="pure">0.00405</oef:ManagementFeesOverAssets>
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      contextRef="S000061716_C000213401"
      decimals="4"
      id="x_1549869e-8c2b-4eae-a67e-969ce0ccb5dc"
      unitRef="pure">0.0050</oef:ManagementFeesOverAssets>
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      contextRef="S000061716_C000213400"
      decimals="4"
      id="x_9c9922ea-f7cc-4b1e-bb51-be46fdce961a"
      unitRef="pure">0.0050</oef:ManagementFeesOverAssets>
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      contextRef="S000061716_C000199930"
      decimals="4"
      id="x_3d8bd64d-f218-4b8d-a36f-402589b18533"
      unitRef="pure">0.0015</oef:OtherExpensesOverAssets>
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      contextRef="S000061716_C000213401"
      decimals="4"
      id="x_4e11867e-2f74-4088-ad40-9cb7c85e24fd"
      unitRef="pure">0.0015</oef:OtherExpensesOverAssets>
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      contextRef="S000061716_C000213400"
      decimals="4"
      id="d020c1eb-5ddd-41b6-9a85-81485b0eec40"
      unitRef="pure">0.0153</oef:OtherExpensesOverAssets>
    <oef:ExpensesOverAssets
      contextRef="S000061716_C000199930"
      decimals="4"
      id="x_00554486-e2bf-4b36-9a42-9c41f30b10df"
      unitRef="pure">0.0056</oef:ExpensesOverAssets>
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      contextRef="S000061716_C000213401"
      decimals="4"
      id="x_923b2b03-848c-4aad-a077-b98de2f4a4ce"
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      contextRef="S000061716_C000213400"
      decimals="4"
      id="x_2936e9b5-73cc-428e-841b-f4ff5f23c765"
      unitRef="pure">0.0203</oef:ExpensesOverAssets>
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      decimals="4"
      id="x_27dd49b9-c2f1-41f3-a91a-1db9b4a6e4fe"
      unitRef="pure">-0.0020</oef:FeeWaiverOrReimbursementOverAssets>
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      contextRef="S000061716_C000213401"
      decimals="4"
      id="x_174178e9-98a9-4462-ad35-3a604098fedd"
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      contextRef="S000061716_C000213400"
      decimals="4"
      id="x_3c6eafdf-2fb5-4b14-8882-66b6c7c98209"
      unitRef="pure">-0.0157</oef:FeeWaiverOrReimbursementOverAssets>
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      decimals="4"
      id="x_8663a561-8ee4-4420-8c62-e2335c6b96c6"
      unitRef="pure">0.0036</oef:NetExpensesOverAssets>
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      decimals="4"
      id="x_86bdac37-ce9c-4fe0-8810-29a1ceb4397f"
      unitRef="pure">0.0036</oef:NetExpensesOverAssets>
    <oef:NetExpensesOverAssets
      contextRef="S000061716_C000213400"
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      id="x_4e7262a1-2493-41b3-b12c-6c668d071188"
      unitRef="pure">0.0046</oef:NetExpensesOverAssets>
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      contextRef="S000061716"
      id="x_47e56fa3-a1d1-44c7-a49c-539ef18b62da">&lt;span style="color:#000000;font-family:Times New Roman;font-size:8pt;font-style:italic;"&gt;June 30, 2026&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:8pt;font-style:italic;"&gt;June 30, 2026&lt;/span&gt;</oef:FeeWaiverOrReimbursementOverAssetsDateOfTermination>
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      id="cdcfaf78-ded0-456d-9f0f-3157ce725171">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-weight:bold;"&gt;Example&lt;/span&gt;</oef:ExpenseExampleHeading>
    <oef:ExpenseExampleNarrativeTextBlock
      contextRef="S000061716"
      id="x_33b9c20a-a7a0-4db9-9228-3af77a399a1b">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;margin-left:3.76%;"&gt;This example is intended to help you compare the cost of investing in the Fund with the cost of investing in other funds. The &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;example assumes that you invest $10,000 in the Fund for the time periods indicated, regardless of whether or not you redeem your shares at the end of such periods. The example also assumes that your investment has a 5% return each year and that the Fund&#x2019;s operating expenses remain the same as those shown in the table. The one year amounts shown reflect the expense reimbursement and waiver noted in the expense table. Although your actual costs may be higher or lower, based on these assumptions your costs would be:&lt;/span&gt;</oef:ExpenseExampleNarrativeTextBlock>
    <oef:ExpenseExampleYear01
      contextRef="S000061716_C000199930"
      decimals="INF"
      id="x_0d6cd511-e1ba-428a-8dc9-b49e97b67d52"
      unitRef="USD">37</oef:ExpenseExampleYear01>
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      contextRef="S000061716_C000199930"
      decimals="INF"
      id="x_0d61e1bd-abc2-415f-9c8b-f7d1eb2efa5f"
      unitRef="USD">159</oef:ExpenseExampleYear03>
    <oef:ExpenseExampleYear05
      contextRef="S000061716_C000199930"
      decimals="INF"
      id="x_6f445d06-2736-4833-93bd-1af1f0a72e2d"
      unitRef="USD">293</oef:ExpenseExampleYear05>
    <oef:ExpenseExampleYear10
      contextRef="S000061716_C000199930"
      decimals="INF"
      id="b4f5ff3c-a9f4-4ddd-a9ac-a93940364ce8"
      unitRef="USD">682</oef:ExpenseExampleYear10>
    <oef:ExpenseExampleYear01
      contextRef="S000061716_C000213401"
      decimals="INF"
      id="becf7338-072e-4713-afbe-f36e93f2cd9a"
      unitRef="USD">37</oef:ExpenseExampleYear01>
    <oef:ExpenseExampleYear03
      contextRef="S000061716_C000213401"
      decimals="INF"
      id="f5841949-b206-4baa-9674-48c49dbf8b1d"
      unitRef="USD">179</oef:ExpenseExampleYear03>
    <oef:ExpenseExampleYear05
      contextRef="S000061716_C000213401"
      decimals="INF"
      id="x_8808aa0a-9cfa-472c-a96c-b12096e96a51"
      unitRef="USD">333</oef:ExpenseExampleYear05>
    <oef:ExpenseExampleYear10
      contextRef="S000061716_C000213401"
      decimals="INF"
      id="c19d447d-4425-497b-9ba9-3b8b18ca2b91"
      unitRef="USD">783</oef:ExpenseExampleYear10>
    <oef:ExpenseExampleYear01
      contextRef="S000061716_C000213400"
      decimals="INF"
      id="x_8a01c794-754b-46c1-8729-5629813b786f"
      unitRef="USD">47</oef:ExpenseExampleYear01>
    <oef:ExpenseExampleYear03
      contextRef="S000061716_C000213400"
      decimals="INF"
      id="e640a653-c3c5-4ecc-8a51-5e24f819cf50"
      unitRef="USD">484</oef:ExpenseExampleYear03>
    <oef:ExpenseExampleYear05
      contextRef="S000061716_C000213400"
      decimals="INF"
      id="x_0dac6bcd-7f5d-415b-8f83-21b9e31d30c8"
      unitRef="USD">948</oef:ExpenseExampleYear05>
    <oef:ExpenseExampleYear10
      contextRef="S000061716_C000213400"
      decimals="INF"
      id="x_6a6fc5d6-53bf-4012-8fba-736da9e57458"
      unitRef="USD">2232</oef:ExpenseExampleYear10>
    <oef:PortfolioTurnoverHeading
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      id="x_8e4d2189-978a-4125-89cd-97089662f1d9">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-weight:bold;"&gt;Portfolio turnover&lt;/span&gt;</oef:PortfolioTurnoverHeading>
    <oef:PortfolioTurnoverTextBlock
      contextRef="S000061716"
      id="x_85b3b134-00f8-4ff0-a9f6-43c20b3f08b1">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;margin-left:3.76%;"&gt;The Fund pays transaction costs, such as commissions, when it buys and sells securities. A higher portfolio turnover rate may &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;result in higher transaction costs and, for holders of Fund shares subject to U.S. taxes, higher income taxes. These transaction costs, which are not reflected in Annual Fund operating expenses or in the Example, affect the Fund&#x2019;s performance.&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; During its fiscal year &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;ended February 28, 2025, the Fund&#x2019;s portfolio turnover rate (excluding short-term investments) was &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;115&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;% of the average value of its portfolio securities.&lt;/span&gt;</oef:PortfolioTurnoverTextBlock>
    <oef:PortfolioTurnoverRate
      contextRef="S000061716"
      decimals="4"
      id="ee784a81-578a-4122-a0ba-2fc2f6ea9a02"
      unitRef="pure">1.15</oef:PortfolioTurnoverRate>
    <oef:StrategyHeading
      contextRef="S000061716"
      id="x_762f9434-7723-4a77-be01-86eb34b9a175">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-weight:bold;"&gt;Principal investment strategies&lt;/span&gt;</oef:StrategyHeading>
    <oef:StrategyNarrativeTextBlock
      contextRef="S000061716"
      id="a3b804d1-052e-4489-b16e-7ed9b1d9f40b">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;margin-left:3.76%;"&gt;The Fund&#x2019;s investment objective is total return (net of fees) in excess of the Markit iBoxx USD Liquid High Yield Index. GMO &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;seeks to achieve the Fund&#x2019;s investment objective by applying a systematic approach to portfolio construction. GMO&#x2019;s research-based &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;margin-left:0%;"&gt;investment process is designed to take advantage of structural inefficiencies GMO has identified within the high yield bond market by dynamically allocating Fund assets across high yield bond market sectors. GMO uses quantitative models, index sampling techniques &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;and diversification, liquidity and cost management considerations to make investment decisions for the Fund.&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;margin-left:3.76%;"&gt;The Fund invests in U.S. high yield bonds, commonly referred to as &#x201c;junk bonds,&#x201d; and other instruments providing high yield &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;bond exposure, including fallen angel bonds (bonds originally issued as investment grade that have since been downgraded to below investment grade), short-dated bonds (bonds with short terms to maturity), exchange-traded funds (&#x201c;ETFs&#x201d;), and swaps on high yield bond indices (such as the credit default swap index (CDX) and the Fund&#x2019;s benchmark) and ETFs. The Fund may sell (write) put options and take short positions on the CDX and other high yield bond indices. The Fund also may invest in non-U.S. high yield bonds and other instruments providing non-U.S. high yield bond exposure. In addition, the Fund may lend its portfolio securities.&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;margin-left:3.76%;"&gt;In addition to the bonds and derivative instruments indicated above, the Fund may invest in a wide variety of exchange-traded and &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;over-the-counter (OTC) derivatives for investment exposure or hedging purposes, including, without limitation, reverse repurchase agreements, repurchase agreements, options, futures, swap contracts, swaptions, and foreign currency contracts. The Fund is not limited in its use of derivatives or in the total notional value of its derivative positions. Leverage is not a principal component of the Fund&#x2019;s investment strategy. However, because of its derivative positions, the Fund may at times have gross investment exposure in excess of its net assets (i.e., the Fund may be leveraged) and, therefore, may be subject to higher risk of loss during those times than if the Fund were not leveraged. The Fund&#x2019;s performance can depend substantially on the performance of assets or indices underlying its derivatives even though it does not own those assets or indices.&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;margin-left:3.76%;"&gt;Under normal circumstances, the Fund invests directly and indirectly (e.g., through derivatives and ETFs) at least 80% of its assets &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;in high yield bonds (see &#x201c;Name Policies&#x201d;). The term &#x201c;bond&#x201d; includes (i) obligations of an issuer to make payments on future dates of principal, interest (whether fixed or variable) or both and (ii) synthetic debt instruments created by GMO by investing in derivatives. &#x201c;High yield bonds&#x201d; generally include those bonds rated BB+ and lower by S&amp;amp;P Global Ratings or Ba1 and lower by Moody&#x2019;s Investors Service, Inc. They also may include unrated bonds that GMO determines are of similar quality to bonds with those ratings.&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;margin-left:3.76%;"&gt;The Fund also may invest in U.S. Treasury Fund, in money market funds unaffiliated with GMO, directly in the types of &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;investments typically held by money market funds, and in fixed income securities issued by non-U.S. developed countries and their agencies and instrumentalities.&lt;/span&gt;</oef:StrategyNarrativeTextBlock>
    <oef:RiskTextBlock
      contextRef="S000061716_RiskLoseMoneyMember"
      id="x_9a56ad72-b5fa-4adf-9c1b-fbcea73f1be2">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;Many factors can affect this value, and you may lose money by investing in the Fund.&lt;/span&gt;</oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="S000061716_RiskNotInsuredDepositoryInstitutionMember"
      id="x_4721afdc-a6ab-4899-b01d-433d72beb33e">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;An investment in the Fund is not a bank deposit and is not insured or guaranteed by the FDIC or &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;any government agency.&lt;/span&gt;</oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="S000061716_ManagementandOperationalRiskMember"
      id="x_28df8b52-0070-49ed-9166-dc35005ccfdf">&lt;span style="color:#000000;font-family:Times New Roman;font-size:8pt;"&gt;&#x25cf;&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-style:italic;"&gt;Management and Operational Risk&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; &#x2013; The Fund runs the risk that GMO&#x2019;s investment techniques will fail to produce intended results.&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;GMO uses quantitative models as part of its investment process. GMO&#x2019;s models may not accurately predict future market movements. In addition, GMO&#x2019;s models rely on assumptions and data that are subject to limitations (e.g., inaccuracies, staleness) that could adversely affect their predictive value.&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; The Fund also runs the risk that GMO&#x2019;s assessment of an investment, including a &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;security&#x2019;s fundamental fair (or intrinsic) value, is wrong or that deficiencies in GMO&#x2019;s or another service provider&#x2019;s internal systems or controls will cause losses for the Fund or impair Fund operations.&lt;/span&gt;</oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="S000061716_MarketRiskFixedIncomeRiskMember"
      id="x_59a88398-8cbc-445c-8fc6-226b70b635eb">&lt;span style="color:#000000;font-family:Times New Roman;font-size:8pt;"&gt;&#x25cf;&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-style:italic;"&gt;Market Risk &#x2013; Fixed Income&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; &#x2013; The market price of a fixed income investment can decline due to market-related factors, including rising interest or inflation rates and widening credit spreads, or decreased liquidity due, for example, to market uncertainty about the value of a fixed income investment (or class of fixed income investments).&lt;/span&gt;</oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="S000061716_CreditRiskMember"
      id="e40bfcbe-994e-4e3b-abdb-6b2f706b8ae2">&lt;span style="color:#000000;font-family:Times New Roman;font-size:8pt;"&gt;&#x25cf;&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-style:italic;"&gt;Credit Risk&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; &#x2013; The Fund runs the risk that the issuer or guarantor of a fixed income investment (including a sovereign or quasi-sovereign debt issuer) or the obligor of an obligation underlying an asset-backed security will be unable or unwilling to satisfy its obligation to pay principal and interest or otherwise to honor its obligations in a timely manner or at all. The market price of a fixed income investment will normally decline as a result of the failure of an issuer, guarantor, or obligor to meet its payment obligations or in anticipation of such a failure. Below investment grade investments (commonly referred to as high yield or &#x201c;junk&#x201d; bonds) have speculative characteristics and are subject to greater credit risk than other fixed income investments. Negative changes in economic conditions or other circumstances are more likely to impair the ability of issuers of below investment grade investments to make principal and interest payments than issuers of investment grade investments.&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; Investments in distressed or defaulted or other low &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;quality debt investments generally are considered speculative and are subject to substantial risks not normally associated with investments in higher quality securities, including adverse business, financial or economic conditions that lead to their issuers&#x2019; &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;margin-left:0.00%;"&gt;payment defaults and insolvency proceedings. In particular, distressed or defaulted obligations might be repaid, if at all, only after lengthy workout or bankruptcy proceedings during which the issuer might not make any interest or other payments, and the Fund may incur additional expenses in its effort to be repaid. If GMO&#x2019;s assessment of the eventual recovery value of a distressed or defaulted debt investment proves incorrect, the Fund may lose a substantial portion or all of its original investment or may be &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;required to accept cash or instruments worth less than its original investment.&lt;/span&gt;</oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="S000061716_DerivativesandShortSalesRiskMember"
      id="x_697ee678-bf76-4c6e-b2cc-5029bc21f712">&lt;span style="color:#000000;font-family:Times New Roman;font-size:8pt;"&gt;&#x25cf;&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-style:italic;"&gt;Derivatives and Short Sales Risk&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; &#x2013; The use of derivatives involves the risk that their value may not change as expected relative to changes in the value of the underlying assets, pools of assets, rates, currencies or indices. Derivatives also present other risks, including market risk, illiquidity risk, currency risk, credit risk, leveraging risk, commodities risk and counterparty risk. The market price of an option is affected by many factors, including changes in the market prices or dividend rates of underlying securities (or in the case of indices, the securities in such indices); the time remaining before expiration; changes in interest rates or exchange rates; and changes in the actual or perceived volatility of the relevant index or underlying securities. The Fund typically creates short investment exposure by selling securities short or by taking a derivative position in which the value of the derivative moves in the opposite direction from the price of an underlying asset, pool of assets, rate, currency or index. Specifically, the net asset value of the Fund&#x2019;s shares will be adversely affected if the securities or other assets that are the subject of the Fund&#x2019;s short exposures appreciate in value. The risk of loss associated with derivatives that provide short investment exposure and short sales of securities is theoretically unlimited.&lt;/span&gt;</oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="S000061716_IlliquidityRiskMember"
      id="x_2b97e66c-630a-4fa2-89ac-927ad3b01f91">&lt;span style="color:#000000;font-family:Times New Roman;font-size:8pt;"&gt;&#x25cf;&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-style:italic;"&gt;Illiquidity Risk&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; &#x2013; Low trading volume, lack of a market maker, large position size, or legal restrictions increase the risk that the Fund or an underlying fund is limited or prevented from selling particular securities or closing derivative positions at desirable prices at a particular time or at all.&lt;/span&gt;</oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="S000061716_FocusedInvestmentRiskMember"
      id="x_763fd966-67de-428b-ab96-3f93b253d120">&lt;span style="color:#000000;font-family:Times New Roman;font-size:8pt;"&gt;&#x25cf;&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-style:italic;"&gt;Focused Investment Risk&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; &#x2013; Investments in countries, regions, asset classes, sectors, industries, currencies, or issuers that are subject to the same or similar risk factors and investments whose market prices are closely correlated are subject to higher overall risk than investments that are more diversified or whose market prices are not as closely correlated.&lt;/span&gt;</oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="S000061716_CounterpartyRiskMember"
      id="a0dcec25-cbcd-4d9c-929b-43a8bb0fbb33">&lt;span style="color:#000000;font-family:Times New Roman;font-size:8pt;"&gt;&#x25cf;&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-style:italic;"&gt;Counterparty Risk&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; &#x2013; The Fund runs the risk that the counterparty to a derivatives contract or a clearing member used by the Fund to hold a cleared derivatives contract is unable or unwilling to make timely settlement payments, return the Fund&#x2019;s collateral or otherwise honor its obligations.&lt;/span&gt;</oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="S000061716_FundofFundsRiskMember"
      id="fa670514-9aeb-4645-a5e1-2ab8700f66ca">&lt;span style="color:#000000;font-family:Times New Roman;font-size:8pt;"&gt;&#x25cf;&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-style:italic;"&gt;Fund of Funds Risk&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; &#x2013; The Fund is indirectly exposed to all of the risks of an investment in the underlying funds in which it invests, including the risk that those underlying funds will not perform as expected.&lt;/span&gt;</oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="S000061716_CurrencyRiskMember"
      id="x_704b3277-d433-40f3-a796-45ef2ef9c26f">&lt;span style="color:#000000;font-family:Times New Roman;font-size:8pt;"&gt;&#x25cf;&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-style:italic;"&gt;Currency Risk&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; &#x2013; Fluctuations in exchange rates can adversely affect the market value of the Fund&#x2019;s foreign currency holdings and investments denominated in foreign currencies.&lt;/span&gt;</oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="S000061716_MarketDisruptionandGeopoliticalRiskMember"
      id="x_575ac573-94ba-449a-95df-4943299e6d33">&lt;span style="color:#000000;font-family:Times New Roman;font-size:8pt;"&gt;&#x25cf;&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-style:italic;"&gt;Market Disruption and Geopolitical Risk&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; &#x2013; Geopolitical and other events (e.g., wars, pandemics, sanctions, terrorism, diplomatic tensions, dramatic changes in regulatory and/or foreign policy, cyberattacks, and rapid technological developments such as artificial intelligence) often disrupt securities markets and adversely affect the general economy or particular economies and markets. Those events, as well as other changes in non-U.S. and U.S. economic and political conditions, could exacerbate other risks or otherwise reduce the value of the Fund&#x2019;s investments.&lt;/span&gt;</oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="S000061716_NonUSInvestmentRiskMember"
      id="x_0bfbf80a-e5e6-4d6e-bd8d-fb9cde982fd8">&lt;span style="color:#000000;font-family:Times New Roman;font-size:8pt;"&gt;&#x25cf;&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-style:italic;"&gt;Non-U.S. Investment Risk&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; &#x2013; The market prices of many non-U.S. securities fluctuate more than those of U.S. securities. Many non-U.S. securities markets are less stable, smaller, less liquid, and less regulated than U.S. securities markets, and the cost of trading in those markets often is higher than in U.S. securities markets. In addition, non-U.S. securities issuers often are not subject to as much regulation as U.S. issuers, and the reporting, recordkeeping, accounting, custody, and auditing standards to which those issuers are subject often are not as rigorous as U.S. standards. In addition, the Fund is subject to taxation by countries other than the United States, including potentially on a retroactive basis, on (i) capital gains it realizes or dividends, interest, or other amounts it realizes or accrues in respect of non-U.S. investments; (ii) transactions in those investments; and (iii) repatriation of proceeds generated from the sale or other disposition of those investments.&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; Also, the Fund needs a license to invest directly in securities &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;traded in many non-U.S. securities markets, and the Fund is subject to the risk that its license is terminated or suspended. In some non-U.S. securities markets, prevailing custody and trade settlement practices (e.g., the requirement to pay for securities prior to receipt) expose the Fund to credit and other risks. Further, adverse changes in investment regulations, capital requirements or exchange controls could adversely affect the value of the Fund&#x2019;s investments. The risks above (such as substantial price fluctuations and market instability, illiquidity and lack of regulation) and other risks (e.g., nationalization, expropriation or other confiscation of assets of non-U.S. issuers, difficulties enforcing legal judgments or contractual rights and geopolitical risks) tend to be higher for investments in the securities of issuers tied economically to emerging countries. The economies of emerging countries often depend predominantly on only a few industries or commodities and often are more volatile than the economies of developed countries.&lt;/span&gt;</oef:RiskTextBlock>
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      contextRef="S000061716_LargeTransactionsRiskMember"
      id="x_1989b5b7-aa11-41d0-b214-d33de430a529">&lt;span style="color:#000000;font-family:Times New Roman;font-size:8pt;"&gt;&#x25cf;&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-style:italic;"&gt;Large Transactions Risk&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; &#x2013; To the extent that a large number of shares of the Fund is held by a single shareholder (e.g., an institutional investor or another GMO Fund) or a group of shareholders with a common investment strategy (e.g., GMO asset allocation accounts), the Fund is subject to the risk that a redemption by (or caused by) that shareholder or group will require the &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;margin-left:0.00%;"&gt;Fund to sell investments at disadvantageous prices, disrupt the Fund&#x2019;s operations, lead to temporary overexposure to the Fund&#x2019;s intended investment program or force the Fund&#x2019;s liquidation. The Fund also may be subject to these effects when a number of &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;shareholders collectively redeem or sell a large amount of Fund shares.&lt;/span&gt;</oef:RiskTextBlock>
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      contextRef="S000061716_LeveragingRiskMember"
      id="x_9c2a0060-a5e4-430b-9c6a-5dd47dfab7f3">&lt;span style="color:#000000;font-family:Times New Roman;font-size:8pt;"&gt;&#x25cf;&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-style:italic;"&gt;Leveraging Risk&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; &#x2013; The use of derivatives, short sales and securities lending can create leverage. Leverage increases the Fund&#x2019;s losses when the value of its investments (including derivatives) declines. In addition, the Fund&#x2019;s portfolio will be leveraged if it exercises its right to delay payment on a redemption and the value of the Fund&#x2019;s assets declines between the time a redemption request is treated as being received by the Fund and the time the Fund liquidates assets to fund that redemption.&lt;/span&gt;</oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="S000061716_FuturesContractsRiskMember"
      id="ba253af8-d621-4753-9213-e953f809acc1">&lt;span style="color:#000000;font-family:Times New Roman;font-size:8pt;"&gt;&#x25cf;&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-style:italic;"&gt;Futures Contracts Risk&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; &#x2013; The loss to the Fund resulting from its use of futures contracts is potentially unlimited. Futures markets are highly volatile, and the use of futures contracts increases the volatility of the Fund&#x2019;s net asset value. A liquid market may not exist for any particular futures contract at any particular time, and the Fund may be unable when it wishes to terminate its exposure under that contract. When the Fund uses futures contracts for hedging purposes, it runs the risk that changes in the prices of the contracts will not correlate perfectly with changes in the securities, index, or other asset underlying the contracts or movements in the prices of the Fund&#x2019;s investments that are subject to the hedge. In addition, the Fund may be unable to recover or may be delayed in recovering margin or other amounts deposited with a futures commission merchant or futures clearinghouse. Foreign futures contracts are often less liquid and more volatile than U.S. futures contracts.&lt;/span&gt;</oef:RiskTextBlock>
    <oef:BarChartAndPerformanceTableHeading
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      id="b1164b2e-a83e-4c49-85d2-55483a5d8767">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-weight:bold;"&gt;Performance&lt;/span&gt;</oef:BarChartAndPerformanceTableHeading>
    <oef:PerformanceNarrativeTextBlock
      contextRef="S000061716"
      id="x_0546981f-7ba6-425c-a637-18abf6da54a3">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;margin-left:3.76%;"&gt;The bar chart and table below provide some indication of the risks of investing in the Fund by showing changes in the Fund&#x2019;s &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;annual total returns from year to year for the periods indicated and by comparing the Fund&#x2019;s average annual total returns for different calendar periods with those of the Fund's benchmark and a broad-based securities market index intended solely to represent, in satisfaction of regulatory requirements, the overall domestic fixed income market.&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; Share classes not shown would have substantially &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;similar annual returns to those below because all share classes invest in the same portfolio of securities. Annual returns vary among share classes to the extent that they bear different expenses. Share classes that bear higher expenses than the share classes shown below would have lower returns. &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;After-tax returns are calculated using the historical highest individual federal marginal income tax rates and &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;do not reflect the impact of state and local taxes.&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; Actual after-tax returns depend on your tax situation and may differ from those shown. &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;After-tax returns shown are not relevant if you are tax-exempt or if you hold your Fund shares through tax-advantaged arrangements (such as a 401(k) plan or individual retirement account). &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;After-tax returns are shown for Class VI shares only; after-tax returns for other &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;classes will vary.&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; Updated performance information for the Fund is available at &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;www.gmo.com&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;. &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;Past performance (before and after taxes) is not an indication of future performance.&lt;/span&gt;</oef:PerformanceNarrativeTextBlock>
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      contextRef="S000061716"
      id="x_3cf85cc7-cb88-4ee6-8f85-c98ea167450a">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;margin-left:3.76%;"&gt;The bar chart and table below provide some indication of the risks of investing in the Fund by showing changes in the Fund&#x2019;s &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;annual total returns from year to year for the periods indicated and by comparing the Fund&#x2019;s average annual total returns for different calendar periods with those of the Fund's benchmark and a broad-based securities market index intended solely to represent, in satisfaction of regulatory requirements, the overall domestic fixed income market.&lt;/span&gt;</oef:PerformanceInformationIllustratesVariabilityOfReturns>
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      id="eb8d31e0-fe58-4a6d-b9d1-6cca079248df">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;After-tax returns are calculated using the historical highest individual federal marginal income tax rates and &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;do not reflect the impact of state and local taxes.&lt;/span&gt;</oef:PerformanceTableUsesHighestFederalRate>
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      id="x_61dde650-edf5-49ab-ad6a-b0d15de5c91b">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; Actual after-tax returns depend on your tax situation and may differ from those shown. &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;After-tax returns shown are not relevant if you are tax-exempt or if you hold your Fund shares through tax-advantaged arrangements (such as a 401(k) plan or individual retirement account). &lt;/span&gt;</oef:PerformanceTableNotRelevantToTaxDeferred>
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      id="x_157f258c-d7e9-42df-a871-0d46b5da76b1">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;After-tax returns are shown for Class VI shares only; after-tax returns for other &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;classes will vary.&lt;/span&gt;</oef:PerformanceTableOneClassOfAfterTaxShown>
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      id="x_324df232-bd30-421f-b2ad-9b3a21106312">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;www.gmo.com&lt;/span&gt;</oef:PerformanceAvailabilityWebSiteAddress>
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      id="a0971b87-eb8c-4378-9db1-7f01ba0469f7">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;Past performance (before and after taxes) is not an indication of future performance.&lt;/span&gt;</oef:PerformancePastDoesNotIndicateFuture>
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      id="x_4fdc4aa5-9730-480e-abf3-c60e99aa4431">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-weight:bold;"&gt;Annual Total Returns/Class VI Shares&lt;/span&gt; &lt;br/&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;Years Ending December 31&lt;/span&gt;</oef:BarChartHeading>
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      id="b7e88030-5cfa-491a-ad0a-1282e461547f">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;Highest Quarter:&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;7.50%&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;-sec-ix-hidden:fe374389-04f8-433b-817c-fc59c21994f8"&gt;4Q 2023&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;Lowest Quarter:&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;-11.21%&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;-sec-ix-hidden:x_9dfd632e-5d2f-40a1-aecb-017dbb1af482"&gt;1Q 2020&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;Year-to-Date:&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;1.26%&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;As of&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;3/31/2025&lt;/span&gt;</oef:BarChartClosingTextBlock>
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      id="x_4193bc44-5321-470a-b95f-5ac8e8d2c48a">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;Highest Quarter:&lt;/span&gt;</oef:HighestQuarterlyReturnLabel>
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      id="x_0c2f090c-1c3a-4ec8-a710-ad0963c5359e">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;Lowest Quarter:&lt;/span&gt;</oef:LowestQuarterlyReturnLabel>
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      unitRef="pure">-0.1121</oef:BarChartLowestQuarterlyReturn>
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      id="cba5103b-0eb8-4396-88c8-b1ba2edc926b">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;Year-to-Date:&lt;/span&gt;</oef:YearToDateReturnLabel>
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      decimals="4"
      id="x_6a5cc6fa-dd0b-41f2-9801-bc580f77c7ec"
      unitRef="pure">0.0126</oef:BarChartYearToDateReturn>
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      contextRef="S000061716_C000199930"
      id="e6ff1a9b-1b81-480d-95a1-562bbd2b395b">2025-03-31</oef:BarChartYearToDateReturnDate>
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      id="x_5008731b-3bdf-43b0-b0a5-b6298310789f">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-weight:bold;"&gt;Average Annual Total Returns&lt;/span&gt; &lt;br/&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;Periods Ending December 31, 2024&lt;/span&gt;</oef:PerformanceTableHeading>
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      id="x_7e2f0dc5-d753-4cb5-a203-b10fe3093692">2018-06-25</oef:PerfInceptionDate>
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      unitRef="pure">0.0938</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000213400_BloombergUSAggregateIndexMember_01Jan2024_31Dec2024"
      decimals="4"
      id="x_1f33a21a-0bfe-4bf1-b7a9-0bb06198b918"
      unitRef="pure">0.0125</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000213400_BloombergUSAggregateIndexMember_13Apr2023_31Dec2024"
      decimals="4"
      id="x_546b7fb3-d70f-4cc7-be19-120e04e4d5b7"
      unitRef="pure">0.0190</oef:AvgAnnlRtrPct>
    <oef:ObjectiveHeading
      contextRef="S000089451"
      id="f1fc6543-9e49-45bd-9bf5-323a6e931594">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-weight:bold;"&gt;Investment objective&lt;/span&gt;</oef:ObjectiveHeading>
    <oef:ObjectivePrimaryTextBlock
      contextRef="S000089451"
      id="d662fe66-8efc-48fd-9a41-08fccf3392ea">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;Total return and capital preservation.&lt;/span&gt;</oef:ObjectivePrimaryTextBlock>
    <oef:ExpenseHeading
      contextRef="S000089451"
      id="x_40f816c7-25b9-489d-b91f-59ad48030f6d">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-weight:bold;"&gt;Fees and expenses&lt;/span&gt;</oef:ExpenseHeading>
    <oef:ExpenseNarrativeTextBlock
      contextRef="S000089451"
      id="ecff53f2-5731-4849-a726-cc39f958f26e">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;margin-left:3.76%;"&gt;The table below describes the fees and expenses that you may bear for each class of shares if you buy, hold, and sell shares of the &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;Fund. You may pay other fees, such as brokerage commissions and other fees to financial intermediaries, which are not reflected in the table and example below.&lt;/span&gt;</oef:ExpenseNarrativeTextBlock>
    <oef:OperatingExpensesCaption
      contextRef="S000089451"
      id="x_150be147-3253-4856-9034-b95e8127bd94">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-weight:bold;"&gt;Annual Fund operating expenses&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:6.5pt;font-weight:bold;position:relative;top:-2.75pt;"&gt;1&lt;/span&gt; &lt;br/&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;(expenses that you bear each year as a percentage of the value of your investment)&lt;/span&gt;</oef:OperatingExpensesCaption>
    <oef:ManagementFeesOverAssets
      contextRef="S000089451_C000256006"
      decimals="4"
      id="x_548bf698-06aa-41a8-ab64-2511bdd71b66"
      unitRef="pure">0.0055</oef:ManagementFeesOverAssets>
    <oef:ManagementFeesOverAssets
      contextRef="S000089451_C000256008"
      decimals="4"
      id="d9c8e077-04b2-4397-aef7-96e5ef521c1f"
      unitRef="pure">0.0050</oef:ManagementFeesOverAssets>
    <oef:ManagementFeesOverAssets
      contextRef="S000089451_C000256007"
      decimals="4"
      id="fbc9fef5-f577-472d-8eaa-26d659e3c0aa"
      unitRef="pure">0.0045</oef:ManagementFeesOverAssets>
    <oef:ManagementFeesOverAssets
      contextRef="S000089451_C000256004"
      decimals="4"
      id="x_1c81f4ec-de07-42df-b7d2-f4ce95ae75fb"
      unitRef="pure">0.0055</oef:ManagementFeesOverAssets>
    <oef:ManagementFeesOverAssets
      contextRef="S000089451_C000256005"
      decimals="4"
      id="x_7f20c3b7-b749-4c8b-9df2-63834c637e35"
      unitRef="pure">0.0055</oef:ManagementFeesOverAssets>
    <oef:OtherExpensesOverAssets
      contextRef="S000089451_C000256006"
      decimals="4"
      id="e585536b-9d4d-4ef7-b754-1f450a781752"
      unitRef="pure">0.0010</oef:OtherExpensesOverAssets>
    <oef:OtherExpensesOverAssets
      contextRef="S000089451_C000256008"
      decimals="4"
      id="x_801f72a2-beec-4efd-a8c8-e4b4c377f8b5"
      unitRef="pure">0.0010</oef:OtherExpensesOverAssets>
    <oef:OtherExpensesOverAssets
      contextRef="S000089451_C000256007"
      decimals="4"
      id="x_2d1cd4de-78c4-4d67-97fa-90ea561fefe6"
      unitRef="pure">0.0010</oef:OtherExpensesOverAssets>
    <oef:OtherExpensesOverAssets
      contextRef="S000089451_C000256004"
      decimals="4"
      id="x_0b188a20-09e4-4bf6-abdc-e0027c32dc01"
      unitRef="pure">0.0010</oef:OtherExpensesOverAssets>
    <oef:OtherExpensesOverAssets
      contextRef="S000089451_C000256005"
      decimals="4"
      id="df61a29f-08b6-4d28-bebd-8102083e8441"
      unitRef="pure">0.0022</oef:OtherExpensesOverAssets>
    <oef:AcquiredFundFeesAndExpensesOverAssets
      contextRef="S000089451_C000256006"
      decimals="4"
      id="x_4a0f85b0-a910-4d3e-8150-ec34f958ace8"
      unitRef="pure">0.0036</oef:AcquiredFundFeesAndExpensesOverAssets>
    <oef:AcquiredFundFeesAndExpensesOverAssets
      contextRef="S000089451_C000256008"
      decimals="4"
      id="x_781e0d26-f755-4c0c-994d-9cb9de6bfcf4"
      unitRef="pure">0.0036</oef:AcquiredFundFeesAndExpensesOverAssets>
    <oef:AcquiredFundFeesAndExpensesOverAssets
      contextRef="S000089451_C000256007"
      decimals="4"
      id="d396b008-7994-4db5-8444-4840bc769d29"
      unitRef="pure">0.0036</oef:AcquiredFundFeesAndExpensesOverAssets>
    <oef:AcquiredFundFeesAndExpensesOverAssets
      contextRef="S000089451_C000256004"
      decimals="4"
      id="x_371385c6-505a-4063-888f-9ef4e655530e"
      unitRef="pure">0.0036</oef:AcquiredFundFeesAndExpensesOverAssets>
    <oef:AcquiredFundFeesAndExpensesOverAssets
      contextRef="S000089451_C000256005"
      decimals="4"
      id="x_8430a5f8-d38d-4b8f-bc9e-3ab28787fe81"
      unitRef="pure">0.0036</oef:AcquiredFundFeesAndExpensesOverAssets>
    <oef:ExpensesOverAssets
      contextRef="S000089451_C000256006"
      decimals="4"
      id="x_1301adc4-6b53-4ed9-ac39-ea1c5f7a6e92"
      unitRef="pure">0.0101</oef:ExpensesOverAssets>
    <oef:ExpensesOverAssets
      contextRef="S000089451_C000256008"
      decimals="4"
      id="c312b1ee-8299-41c8-aa20-75877f27800a"
      unitRef="pure">0.0096</oef:ExpensesOverAssets>
    <oef:ExpensesOverAssets
      contextRef="S000089451_C000256007"
      decimals="4"
      id="x_1c2faea1-7ae7-428e-8aa6-dfc9446e30ae"
      unitRef="pure">0.0091</oef:ExpensesOverAssets>
    <oef:ExpensesOverAssets
      contextRef="S000089451_C000256004"
      decimals="4"
      id="x_75342857-b96d-42c4-9647-64ce4c7cd1f8"
      unitRef="pure">0.0101</oef:ExpensesOverAssets>
    <oef:ExpensesOverAssets
      contextRef="S000089451_C000256005"
      decimals="4"
      id="a53e144f-ef5f-44c7-a4a5-4295a4ce2e25"
      unitRef="pure">0.0113</oef:ExpensesOverAssets>
    <oef:FeeWaiverOrReimbursementOverAssets
      contextRef="S000089451_C000256006"
      decimals="4"
      id="ab2e0de0-2b4e-43f7-9a4f-2fc425fa0c6e"
      unitRef="pure">-0.0041</oef:FeeWaiverOrReimbursementOverAssets>
    <oef:FeeWaiverOrReimbursementOverAssets
      contextRef="S000089451_C000256008"
      decimals="4"
      id="d3f2b499-cecd-4e64-8692-964ef771f2a5"
      unitRef="pure">-0.0041</oef:FeeWaiverOrReimbursementOverAssets>
    <oef:FeeWaiverOrReimbursementOverAssets
      contextRef="S000089451_C000256007"
      decimals="4"
      id="x_158e4891-efae-4a36-9c44-18655dbbf9ed"
      unitRef="pure">-0.0041</oef:FeeWaiverOrReimbursementOverAssets>
    <oef:FeeWaiverOrReimbursementOverAssets
      contextRef="S000089451_C000256004"
      decimals="4"
      id="x_39f7513a-45b4-472d-9ebd-13fc73f243ee"
      unitRef="pure">-0.0041</oef:FeeWaiverOrReimbursementOverAssets>
    <oef:FeeWaiverOrReimbursementOverAssets
      contextRef="S000089451_C000256005"
      decimals="4"
      id="x_5670239f-cddc-460d-9f6f-fe0a6e8a7b02"
      unitRef="pure">-0.0045</oef:FeeWaiverOrReimbursementOverAssets>
    <oef:NetExpensesOverAssets
      contextRef="S000089451_C000256006"
      decimals="4"
      id="x_861a8576-faee-4301-b306-17638a7d3ec3"
      unitRef="pure">0.0060</oef:NetExpensesOverAssets>
    <oef:NetExpensesOverAssets
      contextRef="S000089451_C000256008"
      decimals="4"
      id="eb16ee12-3bde-490b-87b5-7efd6b530aa9"
      unitRef="pure">0.0055</oef:NetExpensesOverAssets>
    <oef:NetExpensesOverAssets
      contextRef="S000089451_C000256007"
      decimals="4"
      id="ca5ccacf-5574-477a-9e96-a575fbc1d75e"
      unitRef="pure">0.0050</oef:NetExpensesOverAssets>
    <oef:NetExpensesOverAssets
      contextRef="S000089451_C000256004"
      decimals="4"
      id="x_653602d4-a334-4133-87b2-b94c9dc3e0d9"
      unitRef="pure">0.0060</oef:NetExpensesOverAssets>
    <oef:NetExpensesOverAssets
      contextRef="S000089451_C000256005"
      decimals="4"
      id="x_7fc7c034-4140-494e-a0fd-98f5eed9de26"
      unitRef="pure">0.0068</oef:NetExpensesOverAssets>
    <oef:OtherExpensesNewFundBasedOnEstimates
      contextRef="S000089451"
      id="x_33d70f68-e7b0-4122-a64f-b6674019919f">&lt;span style="color:#000000;font-family:Times New Roman;font-size:8pt;font-style:italic;"&gt;The amounts represent an annualized estimate of the Fund&#x2019;s operating expenses for its initial fiscal year.&lt;/span&gt;</oef:OtherExpensesNewFundBasedOnEstimates>
    <oef:AcquiredFundFeesAndExpensesBasedOnEstimates
      contextRef="S000089451"
      id="d040a5af-c35c-41f2-81ee-c6f52fd4bede">&lt;span style="color:#000000;font-family:Times New Roman;font-size:8pt;font-style:italic;"&gt;The amounts represent an annualized estimate of the Fund&#x2019;s operating expenses for its initial fiscal year.&lt;/span&gt;</oef:AcquiredFundFeesAndExpensesBasedOnEstimates>
    <oef:FeeWaiverOrReimbursementOverAssetsDateOfTermination
      contextRef="S000089451"
      id="x_6c02b1dc-55a6-4ed6-8bd1-e3ea881a9132">&lt;span style="color:#000000;font-family:Times New Roman;font-size:8pt;font-style:italic;"&gt;June 30, 2026&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:8pt;font-style:italic;"&gt;June 30, 2026&lt;/span&gt;</oef:FeeWaiverOrReimbursementOverAssetsDateOfTermination>
    <oef:ExpenseExampleHeading
      contextRef="S000089451"
      id="x_29df24ab-61b5-4be7-8c74-02f4ea979344">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-weight:bold;"&gt;Example&lt;/span&gt;</oef:ExpenseExampleHeading>
    <oef:ExpenseExampleNarrativeTextBlock
      contextRef="S000089451"
      id="x_1f077f29-7222-48fa-9627-b70e08c7938d">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;margin-left:3.76%;"&gt;This example is intended to help you compare the cost of investing in the Fund with the cost of investing in other funds. The &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;example assumes that you invest $10,000 in the Fund for the time periods indicated, regardless of whether or not you redeem your shares at the end of such periods. The example also assumes that your investment has a 5% return each year and that the Fund&#x2019;s operating expenses remain the same as those shown in the table. The one year amounts shown reflect the applicable expense reimbursements and waivers noted in the expense table. Although your actual costs may be higher or lower, based on these assumptions your costs would be:&lt;/span&gt;</oef:ExpenseExampleNarrativeTextBlock>
    <oef:ExpenseExampleYear01
      contextRef="S000089451_C000256006"
      decimals="INF"
      id="a4ce46a0-8453-4406-8df8-27604d0e1357"
      unitRef="USD">61</oef:ExpenseExampleYear01>
    <oef:ExpenseExampleYear03
      contextRef="S000089451_C000256006"
      decimals="INF"
      id="x_9bdc99d1-3af4-4696-9a67-d33ee74b395e"
      unitRef="USD">281</oef:ExpenseExampleYear03>
    <oef:ExpenseExampleYear01
      contextRef="S000089451_C000256008"
      decimals="INF"
      id="x_1a173a2a-4ed3-4162-ad2e-8d58fd458675"
      unitRef="USD">56</oef:ExpenseExampleYear01>
    <oef:ExpenseExampleYear03
      contextRef="S000089451_C000256008"
      decimals="INF"
      id="ff38e705-9a04-4120-967c-87344902c93b"
      unitRef="USD">265</oef:ExpenseExampleYear03>
    <oef:ExpenseExampleYear01
      contextRef="S000089451_C000256007"
      decimals="INF"
      id="x_405728be-b488-40de-a256-a8020d4d8125"
      unitRef="USD">51</oef:ExpenseExampleYear01>
    <oef:ExpenseExampleYear03
      contextRef="S000089451_C000256007"
      decimals="INF"
      id="x_5679f26d-6e09-437d-b51f-613893abfebf"
      unitRef="USD">249</oef:ExpenseExampleYear03>
    <oef:ExpenseExampleYear01
      contextRef="S000089451_C000256004"
      decimals="INF"
      id="c18c4a76-cd14-4d87-9f4a-231525ce2905"
      unitRef="USD">61</oef:ExpenseExampleYear01>
    <oef:ExpenseExampleYear03
      contextRef="S000089451_C000256004"
      decimals="INF"
      id="x_29d04308-7d65-4500-ba60-8a04d1bd3854"
      unitRef="USD">281</oef:ExpenseExampleYear03>
    <oef:ExpenseExampleYear01
      contextRef="S000089451_C000256005"
      decimals="INF"
      id="x_868a64d5-69cf-42a5-a001-03dbd7b604b9"
      unitRef="USD">69</oef:ExpenseExampleYear01>
    <oef:ExpenseExampleYear03
      contextRef="S000089451_C000256005"
      decimals="INF"
      id="x_01c009f1-b1ee-44f7-aed7-181769dd1402"
      unitRef="USD">314</oef:ExpenseExampleYear03>
    <oef:PortfolioTurnoverHeading
      contextRef="S000089451"
      id="c2431eca-c284-4305-8e14-c26fd9328a59">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-weight:bold;"&gt;Portfolio turnover&lt;/span&gt;</oef:PortfolioTurnoverHeading>
    <oef:PortfolioTurnoverTextBlock
      contextRef="S000089451"
      id="x_63771656-0b40-4d5f-8044-283d9b95da3e">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;margin-left:3.76%;"&gt;The Fund pays transaction costs, such as commissions, when it buys and sells securities. A higher portfolio turnover rate may &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;result in higher transaction costs and, for holders of Fund shares subject to U.S. taxes, higher income taxes. These transaction costs, &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;margin-left:0%;"&gt;which are not reflected in Annual Fund operating expenses or in the Example, affect the Fund&#x2019;s performance.&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; Because the Fund had not commenced operations as of the fiscal year ended February 28, 2025, the Fund has no reportable portfolio turnover rate.&lt;/span&gt;</oef:PortfolioTurnoverTextBlock>
    <oef:StrategyHeading
      contextRef="S000089451"
      id="x_0ea1d44e-8902-496e-9327-4291bb58b7c5">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-weight:bold;"&gt;Principal investment strategies&lt;/span&gt;</oef:StrategyHeading>
    <oef:StrategyNarrativeTextBlock
      contextRef="S000089451"
      id="x_6116ed4a-f8b2-467f-b941-6acfca4ac463">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;margin-left:3.76%;"&gt;GMO seeks to achieve the Fund&#x2019;s investment objective by investing the Fund&#x2019;s assets in the sectors within the fixed income &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;market that GMO believes offer the most attractive risk-adjusted returns.&#160; GMO utilizes an investment process that incorporates a top-down and bottom-up research-driven framework that relies on both fundamental and quantitative techniques designed to take advantage of relative value opportunities within the fixed income markets.&#160; The Fund is a fund of funds and invests primarily in other funds managed by GMO whether now existing or created in the future (&#x201c;underlying GMO Funds&#x201d;), including GMO MAC Implementation Fund, GMO Emerging Country Debt Fund, GMO Emerging Markets Debt Total Return Fund, GMO High Yield Fund, GMO Opportunistic Income Fund, GMO Systematic Investment Grade Credit ETF and GMO Ultra-Short Income ETF.&#160;&#160;&#160;&#160;&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;margin-left:3.76%;"&gt;In deciding how to allocate Fund assets across fixed income sectors, GMO uses various techniques to evaluate the relative &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;attractiveness of particular markets utilizing a variety of inputs.&#160; GMO uses its quantitative forecasts of fixed income asset class returns as well as its proprietary risk modeling for corporate defaults, credit risk and interest rates as part of its top-down investment process. GMO also may consider the relative attractiveness of yield curve and duration positions across sectors of the fixed income market. In addition, GMO seeks to identify opportunities arising from unusual market conditions (such as markets with heightened volatility, significant market declines, or widespread asset price dislocations) not otherwise identified by its quantitative models and uses various portfolio construction techniques to manage risk.&#160; The models and techniques used by GMO take into account value criteria, quality factors (including ESG (environmental, social, and governance) criteria in some cases), momentum, and liquidity.&#160; The Fund may invest in any sector of the bond market and is not required to maintain a minimum or maximum allocation of investments in any one sector.&#160; The Fund may invest in bonds of any maturity, duration, and credit quality.&#160; GMO changes the Fund&#x2019;s holdings of particular asset classes in response to changes in GMO&#x2019;s investment outlook and its assessment of market valuations and may use redemptions or purchases of Fund shares to rebalance the Fund&#x2019;s investments.&#160; The factors GMO considers and investment methods GMO uses can change over time.&#160;&#160;&#160;&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;margin-left:3.76%;"&gt;In pursuing its investment program, the Fund may invest in bonds denominated in various currencies, including non-U.S. and U.S. &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;government bonds, agency bonds, leveraged loans and corporate bonds, asset-backed securities, emerging country sovereign and quasi-sovereign debt securities, investment grade bonds, below investment grade bonds (commonly referred to as &#x201c;high yield&#x201d; or &#x201c;junk bonds,&#x201d;), and inflation-indexed bonds.&#160;&#160;&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;margin-left:3.76%;"&gt;The Fund also may invest in exchange-traded funds (ETFs) and exchange-traded and over-the-counter (OTC) derivatives, including &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;futures contracts, currency options, forward currency contracts, repurchase agreements and reverse repurchase agreements, swap contracts (such as credit default swaps, swaps on securities and securities indices, total return swaps, interest rate swaps, currency swaps, cross currency basis swaps, commodity swaps, inflation swaps, municipal swaps, and other types of swaps), interest rate options, and other types of derivatives. In addition, the Fund may lend its portfolio securities. The Fund is not limited in its use of derivatives or in the total notional value of its derivative exposure. Leverage is not a principal component of the Fund&#x2019;s investment strategy. However, because of its derivative positions, the Fund may at times have gross investment exposure in excess of its net assets (i.e., the Fund may be leveraged) and, therefore, may be subject to higher risk of loss during those times than if the Fund were not leveraged.&#160;The Fund&#x2019;s performance can depend substantially on the performance of assets or indices underlying its derivatives even though it does not own those assets or indices.&#160;&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;margin-left:3.76%;"&gt;GMO does not seek to maintain a specified interest rate duration for the Fund, and the Fund&#x2019;s interest rate duration will change &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;depending on the Fund&#x2019;s investments and GMO&#x2019;s assessment of different sectors of the bond market.&#160;The Fund&#x2019;s interest rate duration may be positive or negative.&#160;The Fund may invest in securities of companies of any market capitalization.&#160;&#160;&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;margin-left:3.76%;"&gt;Under normal circumstances, the Fund invests directly or indirectly (e.g., through underlying GMO Funds) at least 80% of its &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;assets in credit-related investments (see &#x201c;Name Policies&#x201d;). The term &#x201c;credit-related investments&#x201d; includes (i) obligations of an issuer to make payments on future dates of principal, interest (whether fixed or variable) or both and (ii) synthetic debt instruments created by GMO by investing in derivatives (e.g., a futures contract, swap contract, currency forward, or option).&#160;&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;margin-left:3.76%;"&gt;In seeking to achieve the Fund&#x2019;s investment objective, GMO may invest a significant portion of the Fund&#x2019;s net assets in cash and &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;cash equivalents.&#160; The Fund may also invest in GMO U.S. Treasury Fund, in money market funds unaffiliated with GMO, and directly in the types of investments typically held by money market funds.&lt;/span&gt;</oef:StrategyNarrativeTextBlock>
    <oef:RiskTextBlock
      contextRef="S000089451_RiskLoseMoneyMember"
      id="a116033e-ff24-4094-958d-922abce3692a">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;Many factors can affect this value, and you may lose money by investing in the Fund.&lt;/span&gt;</oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="S000089451_RiskNotInsuredDepositoryInstitutionMember"
      id="x_4e5a0ef3-0d33-426d-827d-4d52d6e8be21">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;An investment in the Fund is not a bank deposit and is not insured or guaranteed by the FDIC or &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;any government agency.&lt;/span&gt;</oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="S000089451_NonDiversifiedFundsRiskMember"
      id="x_1c8d5e60-1a36-4953-bafe-3cf73615c165">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;Some of the underlying funds are non-diversified investment &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;companies under the Investment Company Act of 1940, as amended, and therefore a decline in the market price of a particular security held by those funds may affect their performance more than if they were diversified investment companies.&lt;/span&gt;</oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="S000089451_CreditRiskMember"
      id="x_5f212148-dc3a-4447-80c9-44676737c52c">&lt;span style="color:#000000;font-family:Times New Roman;font-size:8pt;"&gt;&#x25cf;&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-style:italic;"&gt;Credit Risk&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; &#x2013; The Fund runs the risk that the issuer or guarantor of a fixed income investment (including a sovereign or quasi-sovereign debt issuer) or the obligor of an obligation underlying an asset-backed security will be unable or unwilling to satisfy its obligation to pay principal and interest or otherwise to honor its obligations in a timely manner or at all. The market price of a fixed income investment will normally decline as a result of the failure of an issuer, guarantor, or obligor to meet its payment obligations or in anticipation of such a failure. Below investment grade investments (commonly referred to as high yield or &#x201c;junk&#x201d; bonds) have speculative characteristics and are subject to greater credit risk than other fixed income investments. Negative changes in economic conditions or other circumstances are more likely to impair the ability of issuers of below investment grade investments to make principal and interest payments than issuers of investment grade investments.&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; In addition, investments in emerging country sovereign &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;or quasi-sovereign debt are subject to a heightened risk that the issuer responsible for repayment of the debt may be unable or unwilling to pay interest and repay principal when due, and the Fund may lack recourse against the issuer in the event of a default. Investments in quasi-sovereign debt also are subject to the risk that the issuer will default independently of its sovereign.&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;Investments in distressed or defaulted or other low quality debt investments generally are considered speculative and are subject to substantial risks not normally associated with investments in higher quality securities, including adverse business, financial or economic conditions that lead to their issuers&#x2019; payment defaults and insolvency proceedings. In particular, distressed or defaulted obligations might be repaid, if at all, only after lengthy workout or bankruptcy proceedings during which the issuer might not make any interest or other payments, and the Fund may incur additional expenses in its effort to be repaid. If GMO&#x2019;s assessment of the eventual recovery value of a distressed or defaulted debt investment proves incorrect, the Fund may lose a substantial portion or all of its original investment or may be required to accept cash or instruments worth less than its original investment.&lt;/span&gt;</oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="S000089451_MarketRiskFixedIncomeRiskMember"
      id="x_7b42c9c8-3e15-4ec4-924d-24805a44ae59">&lt;span style="color:#000000;font-family:Times New Roman;font-size:8pt;"&gt;&#x25cf;&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-style:italic;"&gt;Market Risk &#x2013; Fixed Income&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; &#x2013; The market price of a fixed income investment can decline due to market-related factors, including rising interest or inflation rates and widening credit spreads, or decreased liquidity due, for example, to market uncertainty about the value of a fixed income investment (or class of fixed income investments). In addition, the market prices of emerging country &lt;/span&gt; &lt;br/&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;sovereign and quasi-sovereign debt investments can decline due to uncertainty about their credit quality and the reliability of their &lt;/span&gt; &lt;br/&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;payment streams.&lt;/span&gt;</oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="S000089451_MarketRiskAssetBackedSecuritiesRiskMember"
      id="x_7c034b55-c83d-4adb-880c-444a00d2e932">&lt;span style="color:#000000;font-family:Times New Roman;font-size:8pt;"&gt;&#x25cf;&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-style:italic;"&gt;Market Risk &#x2013; Asset-Backed Securities&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; &#x2013; The market price of asset-backed securities, like that of other fixed income investments, can decline for a variety of reasons, including increases in interest rates. In addition, the market price can decrease due to a reduction in or decrease in the reliability of their payment streams. Payment streams associated with asset-backed securities held by the Fund depend on many factors (e.g., the cash flow generated by the assets backing the securities, deal structure, and creditworthiness of any credit-support provider), and a problem in any of these factors can lead to a reduction in the payment stream GMO expected the Fund to receive when the Fund purchased the asset-backed security. The liquidity of asset-backed securities (particularly below investment grade asset-backed securities) may change over time. During periods of deteriorating economic conditions, such as recessions, or periods of rising unemployment, delinquencies and losses generally increase, sometimes dramatically, for asset-backed securities whose underlying assets consist of loans, sales contracts, receivables and other obligations.&lt;/span&gt;</oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="S000089451_IlliquidityRiskMember"
      id="x_20620b92-9563-4f0e-90d6-9e44904ca97c">&lt;span style="color:#000000;font-family:Times New Roman;font-size:8pt;"&gt;&#x25cf;&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-style:italic;"&gt;Illiquidity Risk&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; &#x2013; Low trading volume, lack of a market maker, large position size, or legal restrictions increase the risk that the Fund or an underlying fund is limited or prevented from selling particular securities or closing derivative positions at desirable prices at a particular time or at all.&lt;/span&gt;</oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="S000089451_DerivativesandShortSalesRiskMember"
      id="x_28226177-44c8-4ff0-8fb0-4112017ce089">&lt;span style="color:#000000;font-family:Times New Roman;font-size:8pt;"&gt;&#x25cf;&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-style:italic;"&gt;Derivatives and Short Sales Risk&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; &#x2013; The use of derivatives involves the risk that their value may not change as expected relative to changes in the value of the underlying assets, pools of assets, rates, currencies or indices. Derivatives also present other risks, including market risk, illiquidity risk, currency risk, credit risk, leveraging risk, commodities risk and counterparty risk. The market price of an option is affected by many factors, including changes in the market prices or dividend rates of underlying securities (or in the case of indices, the securities in such indices); the time remaining before expiration; changes in interest rates or exchange rates; and changes in the actual or perceived volatility of the relevant index or underlying securities. The Fund typically creates short investment exposure by selling securities short or by taking a derivative position in which the value of the derivative moves in the opposite direction from the price of an underlying asset, pool of assets, rate, currency or index. Specifically, the net asset value of the Fund&#x2019;s shares will be adversely affected if the securities or other assets that are the subject of the Fund&#x2019;s short exposures appreciate in value. The risk of loss associated with derivatives that provide short investment exposure and short sales of securities is theoretically unlimited.&lt;/span&gt;</oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="S000089451_CounterpartyRiskMember"
      id="x_1b90fa8b-6ce9-4107-9974-9f39d5d320c4">&lt;span style="color:#000000;font-family:Times New Roman;font-size:8pt;"&gt;&#x25cf;&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-style:italic;"&gt;Counterparty Risk&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; &#x2013; The Fund runs the risk that the counterparty to a derivatives contract or a clearing member used by the Fund to hold a cleared derivatives contract is unable or unwilling to make timely settlement payments, return the Fund&#x2019;s collateral or otherwise honor its obligations.&lt;/span&gt;</oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="S000089451_NonUSInvestmentRiskMember"
      id="e44a2c64-6dac-485a-b249-5ac13bfd5e16">&lt;span style="color:#000000;font-family:Times New Roman;font-size:8pt;"&gt;&#x25cf;&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-style:italic;"&gt;Non-U.S. Investment Risk&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; &#x2013; The market prices of many non-U.S. securities fluctuate more than those of U.S. securities. Many non-U.S. securities markets are less stable, smaller, less liquid, and less regulated than U.S. securities markets, and the cost of trading in those markets often is higher than in U.S. securities markets. In addition, non-U.S. securities issuers often are not subject to as much &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;margin-left:0.00%;"&gt;regulation as U.S. issuers, and the reporting, recordkeeping, accounting, custody, and auditing standards to which those issuers are subject often are not as rigorous as U.S. standards. In addition, the Fund is subject to taxation by countries other than the United States, including potentially on a retroactive basis, on (i) capital gains it realizes or dividends, interest, or other amounts it realizes or accrues in respect of non-U.S. investments; (ii) transactions in those investments; and (iii) repatriation of proceeds generated from the sale or other disposition of those investments.&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; Also, the Fund needs a license to invest directly in securities &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;margin-left:0.00%;"&gt;traded in many non-U.S. securities markets, and the Fund is subject to the risk that its license is terminated or suspended. In some non-U.S. securities markets, prevailing custody and trade settlement practices (e.g., the requirement to pay for securities prior to receipt) expose the Fund to credit and other risks. Further, adverse changes in investment regulations, capital requirements or exchange controls could adversely affect the value of the Fund&#x2019;s investments. The risks above (such as substantial price fluctuations and market instability, illiquidity and lack of regulation) and other risks (e.g., nationalization, expropriation or other confiscation of assets of non-U.S. issuers, difficulties enforcing legal judgments or contractual rights and geopolitical risks) tend to be higher for investments in the securities of issuers tied economically to emerging countries. The economies of emerging countries often depend &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;predominantly on only a few industries or commodities and often are more volatile than the economies of developed countries.&lt;/span&gt;</oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="S000089451_MarketDisruptionandGeopoliticalRiskMember"
      id="a17c7007-3e65-402b-932a-1809baf070c2">&lt;span style="color:#000000;font-family:Times New Roman;font-size:8pt;"&gt;&#x25cf;&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-style:italic;"&gt;Market Disruption and Geopolitical Risk&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; &#x2013; Geopolitical and other events (e.g., wars, pandemics, sanctions, terrorism, diplomatic tensions, dramatic changes in regulatory and/or foreign policy, cyberattacks, and rapid technological developments such as artificial intelligence) often disrupt securities markets and adversely affect the general economy or particular economies and markets. Those events, as well as other changes in non-U.S. and U.S. economic and political conditions, could exacerbate other risks or otherwise reduce the value of the Fund&#x2019;s investments.&lt;/span&gt;</oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="S000089451_LargeTransactionsRiskMember"
      id="x_341d9c52-69f6-4dca-a4d6-16f666f09384">&lt;span style="color:#000000;font-family:Times New Roman;font-size:8pt;"&gt;&#x25cf;&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-style:italic;"&gt;Large Transactions Risk&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; &#x2013; To the extent that a large number of shares of the Fund is held by a single shareholder (e.g., an institutional investor or another GMO Fund) or a group of shareholders with a common investment strategy (e.g., GMO asset allocation accounts), the Fund is subject to the risk that a redemption by (or caused by) that shareholder or group will require the Fund to sell investments at disadvantageous prices, disrupt the Fund&#x2019;s operations, lead to temporary overexposure to the Fund&#x2019;s intended investment program or force the Fund&#x2019;s liquidation. The Fund also may be subject to these effects when a number of shareholders collectively redeem or sell a large amount of Fund shares.&lt;/span&gt;</oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="S000089451_CurrencyRiskMember"
      id="x_828321e2-793a-454a-8d98-565eb29ae4c9">&lt;span style="color:#000000;font-family:Times New Roman;font-size:8pt;"&gt;&#x25cf;&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-style:italic;"&gt;Currency Risk&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; &#x2013; Fluctuations in exchange rates can adversely affect the market value of the Fund&#x2019;s foreign currency holdings and investments denominated in foreign currencies.&lt;/span&gt;</oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="S000089451_FocusedInvestmentRiskMember"
      id="x_272ea9df-5d45-44ff-adc2-c929969ecd61">&lt;span style="color:#000000;font-family:Times New Roman;font-size:8pt;"&gt;&#x25cf;&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-style:italic;"&gt;Focused Investment Risk&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; &#x2013; Investments in countries, regions, asset classes, sectors, industries, currencies, or issuers that are subject to the same or similar risk factors and investments whose market prices are closely correlated are subject to higher overall risk than investments that are more diversified or whose market prices are not as closely correlated.&lt;/span&gt;</oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="S000089451_ManagementandOperationalRiskMember"
      id="ee8b3813-74c1-4fb7-968c-f09ce2c70258">&lt;span style="color:#000000;font-family:Times New Roman;font-size:8pt;"&gt;&#x25cf;&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-style:italic;"&gt;Management and Operational Risk&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; &#x2013; The Fund runs the risk that GMO&#x2019;s investment techniques will fail to produce intended results.&#160;The Fund also runs the risk that GMO&#x2019;s assessment of an investment, including a security&#x2019;s fundamental fair (or intrinsic) value, is wrong or that deficiencies in GMO&#x2019;s or another service provider&#x2019;s internal systems or controls will cause losses for the Fund or impair Fund operations.&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; GMO uses quantitative models as part of its investment process. GMO&#x2019;s models may not accurately &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;predict future market movements. In addition, GMO&#x2019;s models rely on assumptions and data that are subject to limitations (e.g., inaccuracies, staleness) that could adversely affect their predictive value.&lt;/span&gt;</oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="S000089451_LeveragingRiskMember"
      id="x_2804de56-5270-4ca5-991a-8ae2297912d3">&lt;span style="color:#000000;font-family:Times New Roman;font-size:8pt;"&gt;&#x25cf;&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-style:italic;"&gt;Leveraging Risk&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; &#x2013; The use of derivatives, short sales and securities lending can create leverage. Leverage increases the Fund&#x2019;s losses when the value of its investments (including derivatives) declines. In addition, the Fund&#x2019;s portfolio will be leveraged if it exercises its right to delay payment on a redemption and the value of the Fund&#x2019;s assets declines between the time a redemption request is treated as being received by the Fund and the time the Fund liquidates assets to fund that redemption.&lt;/span&gt;</oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="S000089451_FundofFundsRiskMember"
      id="x_04b00c5a-f32f-491b-9513-a5e5ce79a4a8">&lt;span style="color:#000000;font-family:Times New Roman;font-size:8pt;"&gt;&#x25cf;&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-style:italic;"&gt;Fund of Funds Risk&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; &#x2013; The Fund is indirectly exposed to all of the risks of an investment in the underlying funds in which it invests, including the risk that those underlying funds will not perform as expected.&lt;/span&gt;</oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="S000089451_FuturesContractsRiskMember"
      id="x_3ebbf71f-0f43-4339-b9ff-dcb4030e8980">&lt;span style="color:#000000;font-family:Times New Roman;font-size:8pt;"&gt;&#x25cf;&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-style:italic;"&gt;Futures Contracts Risk&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; &#x2013; The loss to the Fund resulting from its use of futures contracts is potentially unlimited. Futures markets are highly volatile, and the use of futures contracts increases the volatility of the Fund&#x2019;s net asset value. A liquid market may not exist for any particular futures contract at any particular time, and the Fund may be unable when it wishes to terminate its exposure under that contract. When the Fund uses futures contracts for hedging purposes, it runs the risk that changes in the prices of the contracts will not correlate perfectly with changes in the securities, index, or other asset underlying the contracts or movements in the prices of the Fund&#x2019;s investments that are subject to the hedge. In addition, the Fund may be unable to recover or may be delayed in recovering margin or other amounts deposited with a futures commission merchant or futures clearinghouse. Foreign futures contracts are often less liquid and more volatile than U.S. futures contracts.&lt;/span&gt;</oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="S000089451_SmallerCompanyRiskMember"
      id="c61f044d-f502-4c56-b266-effa461afebd">&lt;span style="color:#000000;font-family:Times New Roman;font-size:8pt;"&gt;&#x25cf;&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-style:italic;"&gt;Smaller Company Risk&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; &#x2013; Smaller companies may have limited product lines, markets, or financial resources, lack the competitive strength of larger companies, have less experienced managers or depend on a few key employees. The securities of companies with smaller market capitalizations often are less widely held and trade less frequently and in lesser quantities, and their market prices often fluctuate more, than the securities of companies with larger market capitalizations.&lt;/span&gt;</oef:RiskTextBlock>
    <oef:BarChartAndPerformanceTableHeading
      contextRef="S000089451"
      id="f69dd359-a9f5-4611-9dc0-2f0164337851">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-weight:bold;"&gt;Performance&lt;/span&gt;</oef:BarChartAndPerformanceTableHeading>
    <oef:PerformanceNarrativeTextBlock
      contextRef="S000089451"
      id="x_55381d87-8011-4d3a-b246-3fa932e79189">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;margin-left:3.76%;"&gt;Because the Fund had not yet completed a full calendar year of operations as of the date of this Prospectus, performance &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;information for the Fund is not included.&lt;/span&gt;</oef:PerformanceNarrativeTextBlock>
    <oef:PerformanceOneYearOrLess
      contextRef="S000089451"
      id="c821fcea-2cb7-4770-88cc-6f0d37f1d2ee">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;margin-left:3.76%;"&gt;Because the Fund had not yet completed a full calendar year of operations as of the date of this Prospectus, performance &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;information for the Fund is not included.&lt;/span&gt;</oef:PerformanceOneYearOrLess>
    <oef:ObjectiveHeading
      contextRef="S000007516"
      id="edbb193c-730c-417c-9c55-02a7b8048de8">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-weight:bold;"&gt;Investment objective&lt;/span&gt;</oef:ObjectiveHeading>
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      contextRef="S000007516"
      id="x_3aab2c13-941b-4979-bb0a-276caf842d25">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;Capital appreciation and current income.&lt;/span&gt;</oef:ObjectivePrimaryTextBlock>
    <oef:ExpenseHeading
      contextRef="S000007516"
      id="x_793e3b59-f5cd-4bed-9692-acad6ce5f97a">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-weight:bold;"&gt;Fees and expenses&lt;/span&gt;</oef:ExpenseHeading>
    <oef:ExpenseNarrativeTextBlock
      contextRef="S000007516"
      id="e4601c9f-aeef-4533-89ea-95fb5fc42463">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;margin-left:3.76%;"&gt;The table below describes the fees and expenses that you may bear for each class of shares if you buy, hold, and sell shares of the &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;Fund. You may pay other fees, such as brokerage commissions and other fees to financial intermediaries, which are not reflected in the table and example below.&lt;/span&gt;</oef:ExpenseNarrativeTextBlock>
    <oef:OperatingExpensesCaption
      contextRef="S000007516"
      id="db2a34fc-fe61-4524-b1cb-e20ed3f5289b">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-weight:bold;"&gt;Annual Fund operating expenses &lt;/span&gt; &lt;br/&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;(expenses that you bear each year as a percentage of the value of your investment)&lt;/span&gt;</oef:OperatingExpensesCaption>
    <oef:ManagementFeesOverAssets
      contextRef="S000007516_C000137450"
      decimals="4"
      id="c929ebca-6a14-47d2-af41-6805e6137b59"
      unitRef="pure">0.0055</oef:ManagementFeesOverAssets>
    <oef:ManagementFeesOverAssets
      contextRef="S000007516_C000020548"
      decimals="5"
      id="x_75d1427b-4991-44ca-b7db-caaf891a2f23"
      unitRef="pure">0.00455</oef:ManagementFeesOverAssets>
    <oef:ManagementFeesOverAssets
      contextRef="S000007516_C000213385"
      decimals="4"
      id="x_2acaf850-d290-4f0b-b712-63d6e1b09e6a"
      unitRef="pure">0.0055</oef:ManagementFeesOverAssets>
    <oef:ManagementFeesOverAssets
      contextRef="S000007516_C000213384"
      decimals="4"
      id="x_3fc0cf46-6730-43d6-a019-e4a483f3a47c"
      unitRef="pure">0.0055</oef:ManagementFeesOverAssets>
    <oef:OtherExpensesOverAssets
      contextRef="S000007516_C000137450"
      decimals="4"
      id="fa21cbce-e07c-41fa-aebe-b1ad7bbcbc44"
      unitRef="pure">0.0006</oef:OtherExpensesOverAssets>
    <oef:OtherExpensesOverAssets
      contextRef="S000007516_C000020548"
      decimals="4"
      id="x_7e07ac55-2443-495c-83c4-5aeb6786dc82"
      unitRef="pure">0.0006</oef:OtherExpensesOverAssets>
    <oef:OtherExpensesOverAssets
      contextRef="S000007516_C000213385"
      decimals="4"
      id="x_45fde303-9920-429b-a83e-77424aaf93b3"
      unitRef="pure">0.0006</oef:OtherExpensesOverAssets>
    <oef:OtherExpensesOverAssets
      contextRef="S000007516_C000213384"
      decimals="4"
      id="x_062e2bd3-5861-46c1-aa83-7baf913eb4e1"
      unitRef="pure">0.0018</oef:OtherExpensesOverAssets>
    <oef:ExpensesOverAssets
      contextRef="S000007516_C000137450"
      decimals="4"
      id="x_93d5ceb3-4ed0-4fdb-9d57-101ee0e4ceff"
      unitRef="pure">0.0061</oef:ExpensesOverAssets>
    <oef:ExpensesOverAssets
      contextRef="S000007516_C000020548"
      decimals="4"
      id="x_5b6bc491-046e-49e2-ac43-09d4c2d319dc"
      unitRef="pure">0.0052</oef:ExpensesOverAssets>
    <oef:ExpensesOverAssets
      contextRef="S000007516_C000213385"
      decimals="4"
      id="x_413711a5-467f-44f4-a8b8-128a5a005c2d"
      unitRef="pure">0.0061</oef:ExpensesOverAssets>
    <oef:ExpensesOverAssets
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      id="x_4b2c205a-730e-42e7-b763-953b82fff3e0"
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      decimals="4"
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      unitRef="pure">0.0058</oef:NetExpensesOverAssets>
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      decimals="4"
      id="x_3382eea0-68eb-4fba-bf22-948b93d343cc"
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      id="add73c37-814d-4f5e-b9cf-0f75967d322c"
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      contextRef="S000007516"
      id="f03a3816-72bd-4297-a8b9-de9a8f9ec8f3">&lt;span style="color:#000000;font-family:Times New Roman;font-size:8pt;font-style:italic;"&gt;June 30, 2026&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:8pt;font-style:italic;"&gt;June 30, 2026&lt;/span&gt;</oef:FeeWaiverOrReimbursementOverAssetsDateOfTermination>
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      id="x_4a2497fb-11ef-46c4-aded-9e3e737ce67c">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-weight:bold;"&gt;Example&lt;/span&gt;</oef:ExpenseExampleHeading>
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      id="ea2be618-76b2-4dec-baf8-48841b3719ba">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;margin-left:3.76%;"&gt;This example is intended to help you compare the cost of investing in the Fund with the cost of investing in other funds. The &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;example assumes that you invest $10,000 in the Fund for the time periods indicated, regardless of whether or not you redeem your shares at the end of such periods. The example also assumes that your investment has a 5% return each year and that the Fund&#x2019;s operating expenses remain the same as those shown in the table. The one year amounts shown reflect the expense reimbursement and waiver noted in the expense table. Although your actual costs may be higher or lower, based on these assumptions your costs would be:&lt;/span&gt;</oef:ExpenseExampleNarrativeTextBlock>
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      contextRef="S000007516_C000137450"
      decimals="INF"
      id="df382b98-817a-4d8f-b3a9-eddd5bc37952"
      unitRef="USD">59</oef:ExpenseExampleYear01>
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      contextRef="S000007516_C000137450"
      decimals="INF"
      id="x_3f7cbadf-c27d-4e62-801a-e4cd0d157b9d"
      unitRef="USD">192</oef:ExpenseExampleYear03>
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      contextRef="S000007516_C000137450"
      decimals="INF"
      id="f72a44b0-c52a-4544-a351-1c5bfc3935cc"
      unitRef="USD">337</oef:ExpenseExampleYear05>
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      contextRef="S000007516_C000137450"
      decimals="INF"
      id="x_72ada3df-071f-4abe-b11f-2a6f06feb27b"
      unitRef="USD">759</oef:ExpenseExampleYear10>
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      contextRef="S000007516_C000020548"
      decimals="INF"
      id="d973349d-6524-44a8-adac-ec53b0cdfac9"
      unitRef="USD">50</oef:ExpenseExampleYear01>
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      contextRef="S000007516_C000020548"
      decimals="INF"
      id="b246d03e-c82d-4aa7-83a7-89493424ae46"
      unitRef="USD">164</oef:ExpenseExampleYear03>
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      contextRef="S000007516_C000020548"
      decimals="INF"
      id="e7edfa65-44d3-4fc7-92bc-ceb5d29f262a"
      unitRef="USD">288</oef:ExpenseExampleYear05>
    <oef:ExpenseExampleYear10
      contextRef="S000007516_C000020548"
      decimals="INF"
      id="x_0647694a-4a24-479d-8ebb-0ac158c8cef1"
      unitRef="USD">650</oef:ExpenseExampleYear10>
    <oef:ExpenseExampleYear01
      contextRef="S000007516_C000213385"
      decimals="INF"
      id="f685649d-3967-4dd1-9dba-c1816730629c"
      unitRef="USD">59</oef:ExpenseExampleYear01>
    <oef:ExpenseExampleYear03
      contextRef="S000007516_C000213385"
      decimals="INF"
      id="x_4570358c-9711-491a-b5be-b2f7febddf1d"
      unitRef="USD">192</oef:ExpenseExampleYear03>
    <oef:ExpenseExampleYear05
      contextRef="S000007516_C000213385"
      decimals="INF"
      id="x_3af5da5f-e919-4b2c-bf57-702bd85a4e0b"
      unitRef="USD">337</oef:ExpenseExampleYear05>
    <oef:ExpenseExampleYear10
      contextRef="S000007516_C000213385"
      decimals="INF"
      id="x_6743d741-bafa-4b70-a0de-2fcab9d74a01"
      unitRef="USD">759</oef:ExpenseExampleYear10>
    <oef:ExpenseExampleYear01
      contextRef="S000007516_C000213384"
      decimals="INF"
      id="x_428521c7-9cf6-4db9-bc09-c31b484a6d29"
      unitRef="USD">72</oef:ExpenseExampleYear01>
    <oef:ExpenseExampleYear03
      contextRef="S000007516_C000213384"
      decimals="INF"
      id="x_94d2c80e-5556-45be-8393-d824f82118a5"
      unitRef="USD">230</oef:ExpenseExampleYear03>
    <oef:ExpenseExampleYear05
      contextRef="S000007516_C000213384"
      decimals="INF"
      id="x_90b75e80-4c59-42d6-ab55-7bd407c9530c"
      unitRef="USD">403</oef:ExpenseExampleYear05>
    <oef:ExpenseExampleYear10
      contextRef="S000007516_C000213384"
      decimals="INF"
      id="ed80124b-d58b-4c50-ad0c-d482af92b74b"
      unitRef="USD">904</oef:ExpenseExampleYear10>
    <oef:PortfolioTurnoverHeading
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      id="b8f7ee0c-3d02-4e08-a03c-a5ad7e02b986">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-weight:bold;"&gt;Portfolio turnover&lt;/span&gt;</oef:PortfolioTurnoverHeading>
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      id="x_3d853081-afe9-4ac7-a09c-dd8983c5ef43">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;margin-left:3.76%;"&gt;The Fund pays transaction costs, such as commissions, when it buys and sells securities. A higher portfolio turnover rate may &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;result in higher transaction costs and, for holders of Fund shares subject to U.S. taxes, higher income taxes. These transaction costs, which are not reflected in Annual Fund operating expenses or in the Example, affect the Fund&#x2019;s performance.&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; During its fiscal year &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;ended February 28, 2025, the Fund&#x2019;s portfolio turnover rate (excluding short-term investments) was &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;275&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;% of the average value of its portfolio securities.&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; That portfolio turnover rate includes investments in U.S. Treasury Fund, which the Fund uses as a short-term &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;investment vehicle for cash management. The Fund&#x2019;s portfolio turnover rate during its fiscal year ended February 28, 2025, excluding transactions in U.S. Treasury Fund and other short-term investments, was 277% of the average value of its portfolio securities.&lt;/span&gt;</oef:PortfolioTurnoverTextBlock>
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      id="x_69e7b86e-83e3-46e0-af90-6b005dff0d61"
      unitRef="pure">2.75</oef:PortfolioTurnoverRate>
    <oef:StrategyHeading
      contextRef="S000007516"
      id="x_50b237d2-cc0d-4c8e-8259-6f35c8fe6fad">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-weight:bold;"&gt;Principal investment strategies&lt;/span&gt;</oef:StrategyHeading>
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      id="bf93c622-18af-49cc-a5c9-01029f6c46b5">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;margin-left:3.76%;"&gt;The Fund invests primarily in securitized credit securities. Securitized credit securities include, but are not limited to, commercial &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;and residential (non-agency and agency) mortgage-backed securities, small balance commercial mortgages, collateralized loan obligations, collateralized debt obligations, and securities backed by pools of receivables in various industries. The interest rates for these securities may be fixed or variable. The Fund also may invest in other fixed-income instruments, including, without limitation, &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;margin-left:0%;"&gt;bonds and other similar instruments issued or guaranteed by the U.S. government and its agencies and instrumentalities, by non-U.S. &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;governments and their agencies and instrumentalities and by private sector entities.&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;margin-left:3.76%;"&gt;The Fund also may invest in the following: interest-only, principal-only, or inverse floating rate debt; mortgage dollar rolls; &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;securities on a when-issued, delayed delivery or forward commitment basis through the &#x201c;to-be-announced&#x201d; market; mortgage loans; securities of any maturity or duration with fixed, floating, or variable rates; equity and debt securities issued by real estate investment trusts; debt securities issued by business development companies; corporate debt securities of any quality and maturity, including high-yield securities (commonly referred to as &#x201c;junk bonds&#x201d;); and securities that are not rated by any rating agency.&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;margin-left:3.76%;"&gt;GMO utilizes both a top-down and bottom-up security selection approach. GMO allocates Fund assets among various asset classes &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;within the structured fixed income market based on its views regarding the best value relative to what is currently available in the market. In managing the Fund&#x2019;s portfolio, GMO typically analyzes a variety of factors including, among others, maturity, yield and ratings information, opportunities for price appreciation, collateral quality, credit support, structure, and market conditions. GMO attempts to diversify risks that arise from position sizes, sectors and geographies, ratings, duration, deal structure and collateral values and seeks to further limit risk of principal loss by causing the Fund to invest in securities or other instruments that it considers undervalued. To a lesser extent, GMO may use quantitative models to capitalize on price momentum across fixed income sectors. GMO does not manage the Fund to, or control the Fund&#x2019;s risk relative to, any securities index or securities benchmark.&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;margin-left:3.76%;"&gt;From time to time, the Fund may have some direct or indirect exposure to equities. The Fund may invest in securities of &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;companies of any market capitalization, as well as in securities of any maturity, duration, or credit quality.&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;margin-left:3.76%;"&gt;The Fund also may invest in exchange-traded funds (ETFs) and exchange-traded and over-the-counter (OTC) derivatives, including &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;swap contracts (such as credit default swaps, swaps on securities and securities indices, total return swaps and interest rate swaps), futures contracts, forward currency contracts, currency and interest rate options, swaptions (including credit default swaptions), reverse repurchase agreements, and repurchase agreements. In addition, the Fund may lend its portfolio securities. The Fund is not limited in its use of derivatives or in the total notional value of its derivative positions. Leverage is not a principal component of the Fund&#x2019;s investment strategy. However, because of its derivative positions, the Fund may at times have gross investment exposure in excess of its net assets (i.e., the Fund may be leveraged) and, therefore, may be subject to higher risk of loss during those times than if the Fund were not leveraged. The Fund&#x2019;s performance can depend substantially on the performance of assets or indices underlying its derivatives even though it does not own those assets or indices.&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;margin-left:3.76%;"&gt;In seeking to achieve the Fund&#x2019;s investment objective, GMO may invest a significant portion of the Fund&#x2019;s net assets in cash and &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;cash equivalents.&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;margin-left:3.76%;"&gt;The Fund also may invest in U.S. Treasury Fund, in money market funds unaffiliated with GMO, and directly in the types of &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;investments typically held by money market funds. The Fund may, but is not required to, hedge part or all of its net foreign currency exposure into U.S. dollars.&lt;/span&gt;</oef:StrategyNarrativeTextBlock>
    <oef:RiskTextBlock
      contextRef="S000007516_RiskLoseMoneyMember"
      id="b56d32cb-948c-424d-8828-026dff2e1a35">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;Many factors can affect this value, and you may lose money by investing in the Fund.&lt;/span&gt;</oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="S000007516_RiskNotInsuredDepositoryInstitutionMember"
      id="bfe4ac7d-9495-46c6-aa39-29d33dca96e4">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;An investment in the Fund is not a bank deposit and is not insured or guaranteed by the FDIC or &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;any government agency.&lt;/span&gt;</oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="S000007516_CreditRiskMember"
      id="x_5817fa4c-eba5-47cc-ba2d-0e69592558b8">&lt;span style="color:#000000;font-family:Times New Roman;font-size:8pt;"&gt;&#x25cf;&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-style:italic;"&gt;Credit Risk&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; &#x2013; The Fund runs the risk that the issuer or guarantor of a fixed income investment (including a sovereign or quasi-sovereign debt issuer) or the obligor of an obligation underlying an asset-backed security will be unable or unwilling to satisfy its obligation to pay principal and interest or otherwise to honor its obligations in a timely manner or at all. The market price of a fixed income investment will normally decline as a result of the failure of an issuer, guarantor, or obligor to meet its payment obligations or in anticipation of such a failure. Below investment grade investments (commonly referred to as high yield or &#x201c;junk&#x201d; bonds) have speculative characteristics and are subject to greater credit risk than other fixed income investments. Negative changes in economic conditions or other circumstances are more likely to impair the ability of issuers of below investment grade investments to make principal and interest payments than issuers of investment grade investments.&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; In addition, investments in emerging country sovereign &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;or quasi-sovereign debt are subject to a heightened risk that the issuer responsible for repayment of the debt may be unable or unwilling to pay interest and repay principal when due, and the Fund may lack recourse against the issuer in the event of a default. Investments in quasi-sovereign debt also are subject to the risk that the issuer will default independently of its sovereign.&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;Investments in distressed or defaulted or other low quality debt investments generally are considered speculative and are subject to substantial risks not normally associated with investments in higher quality securities, including adverse business, financial or economic conditions that lead to their issuers&#x2019; payment defaults and insolvency proceedings. In particular, distressed or defaulted obligations might be repaid, if at all, only after lengthy workout or bankruptcy proceedings during which the issuer might not make any interest or other payments, and the Fund may incur additional expenses in its effort to be repaid. If GMO&#x2019;s assessment of the eventual recovery value of a distressed or defaulted debt investment proves incorrect, the Fund may lose a substantial portion or all of its original investment or may be required to accept cash or instruments worth less than its original investment.&lt;/span&gt;</oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="S000007516_MarketRiskAssetBackedSecuritiesRiskMember"
      id="d8738e11-40fc-48dc-b784-901dac847d84">&lt;span style="color:#000000;font-family:Times New Roman;font-size:8pt;"&gt;&#x25cf;&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-style:italic;"&gt;Market Risk &#x2013; Asset-Backed Securities&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; &#x2013; The market price of asset-backed securities, like that of other fixed income investments, can decline for a variety of reasons, including increases in interest rates. In addition, the market price can decrease due to a reduction in or decrease in the reliability of their payment streams. Payment streams associated with asset-backed securities held by the Fund depend on many factors (e.g., the cash flow generated by the assets backing the securities, deal structure, and creditworthiness of any credit-support provider), and a problem in any of these factors can lead to a reduction in the payment stream GMO expected the Fund to receive when the Fund purchased the asset-backed security. The liquidity of asset-backed securities (particularly below investment grade asset-backed securities) may change over time. During periods of deteriorating economic conditions, such as recessions, or periods of rising unemployment, delinquencies and losses generally increase, sometimes dramatically, for asset-backed securities whose underlying assets consist of loans, sales contracts, receivables and other obligations.&lt;/span&gt;</oef:RiskTextBlock>
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      contextRef="S000007516_IlliquidityRiskMember"
      id="x_09783c5f-cb9c-47f8-a6a4-64533025cb0c">&lt;span style="color:#000000;font-family:Times New Roman;font-size:8pt;"&gt;&#x25cf;&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-style:italic;"&gt;Illiquidity Risk&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; &#x2013; Low trading volume, lack of a market maker, large position size, or legal restrictions increase the risk that the Fund or an underlying fund is limited or prevented from selling particular securities or closing derivative positions at desirable prices at a particular time or at all.&lt;/span&gt;</oef:RiskTextBlock>
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      contextRef="S000007516_FocusedInvestmentRiskMember"
      id="x_344e3a1a-4a0f-42c0-834b-19e36bc80b5e">&lt;span style="color:#000000;font-family:Times New Roman;font-size:8pt;"&gt;&#x25cf;&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-style:italic;"&gt;Focused Investment Risk&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; &#x2013; Investments in countries, regions, asset classes, sectors, industries, currencies, or issuers that are subject to the same or similar risk factors and investments whose market prices are closely correlated, such as the Fund&#x2019;s investments in non-U.S. government bonds and asset-backed securities secured by different types of consumer debt (e.g., credit-card receivables, automobile loans, and home equity loans), are subject to higher overall risk than investments that are more diversified or whose market prices are not as closely correlated.&lt;/span&gt;</oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="S000007516_MarketRiskFixedIncomeRiskMember"
      id="c9ad6b44-18d1-49d7-a145-1147c8a08b80">&lt;span style="color:#000000;font-family:Times New Roman;font-size:8pt;"&gt;&#x25cf;&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-style:italic;"&gt;Market Risk &#x2013; Fixed Income&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; &#x2013; The market price of a fixed income investment can decline due to market-related factors, including rising interest or inflation rates and widening credit spreads, or decreased liquidity due, for example, to market uncertainty about the value of a fixed income investment (or class of fixed income investments).&lt;/span&gt;</oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="S000007516_DerivativesandShortSalesRiskMember"
      id="f2e96997-32d8-4669-a863-1fae5be50df2">&lt;span style="color:#000000;font-family:Times New Roman;font-size:8pt;"&gt;&#x25cf;&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-style:italic;"&gt;Derivatives and Short Sales Risk&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; &#x2013; The use of derivatives involves the risk that their value may not change as expected relative to changes in the value of the underlying assets, pools of assets, rates, currencies or indices. Derivatives also present other risks, including market risk, illiquidity risk, currency risk, credit risk, leveraging risk, commodities risk and counterparty risk. The market price of an option is affected by many factors, including changes in the market prices or dividend rates of underlying securities (or in the case of indices, the securities in such indices); the time remaining before expiration; changes in interest rates or exchange rates; and changes in the actual or perceived volatility of the relevant index or underlying securities. The Fund typically creates short investment exposure by selling securities short or by taking a derivative position in which the value of the derivative moves in the opposite direction from the price of an underlying asset, pool of assets, rate, currency or index. Specifically, the net asset value of the Fund&#x2019;s shares will be adversely affected if the securities or other assets that are the subject of the Fund&#x2019;s short exposures appreciate in value. The risk of loss associated with derivatives that provide short investment exposure and short sales of securities is theoretically unlimited.&lt;/span&gt;</oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="S000007516_FuturesContractsRiskMember"
      id="x_9654d291-4c8a-4fcd-8424-3390da7524e9">&lt;span style="color:#000000;font-family:Times New Roman;font-size:8pt;"&gt;&#x25cf;&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-style:italic;"&gt;Futures Contracts Risk&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; &#x2013; The loss to the Fund resulting from its use of futures contracts is potentially unlimited. Futures markets are highly volatile, and the use of futures contracts increases the volatility of the Fund&#x2019;s net asset value. A liquid market may not exist for any particular futures contract at any particular time, and the Fund may be unable when it wishes to terminate its exposure under that contract. When the Fund uses futures contracts for hedging purposes, it runs the risk that changes in the prices of the contracts will not correlate perfectly with changes in the securities, index, or other asset underlying the contracts or movements in the prices of the Fund&#x2019;s investments that are subject to the hedge. In addition, the Fund may be unable to recover or may be delayed in recovering margin or other amounts deposited with a futures commission merchant or futures clearinghouse. Foreign futures contracts are often less liquid and more volatile than U.S. futures contracts.&lt;/span&gt;</oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="S000007516_LeveragingRiskMember"
      id="x_12e80088-ff21-465e-ac41-ca0ea35c6b1f">&lt;span style="color:#000000;font-family:Times New Roman;font-size:8pt;"&gt;&#x25cf;&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-style:italic;"&gt;Leveraging Risk&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; &#x2013; The use of derivatives, short sales and securities lending can create leverage. Leverage increases the Fund&#x2019;s losses when the value of its investments (including derivatives) declines. In addition, the Fund&#x2019;s portfolio will be leveraged if it exercises its right to delay payment on a redemption and the value of the Fund&#x2019;s assets declines between the time a redemption request is treated as being received by the Fund and the time the Fund liquidates assets to fund that redemption.&lt;/span&gt;</oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="S000007516_CounterpartyRiskMember"
      id="x_59a5bef4-8952-468a-9350-c12086a950a1">&lt;span style="color:#000000;font-family:Times New Roman;font-size:8pt;"&gt;&#x25cf;&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-style:italic;"&gt;Counterparty Risk&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; &#x2013; The Fund runs the risk that the counterparty to a derivatives contract or a clearing member used by the Fund to hold a cleared derivatives contract is unable or unwilling to make timely settlement payments, return the Fund&#x2019;s collateral or otherwise honor its obligations.&lt;/span&gt;</oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="S000007516_ManagementandOperationalRiskMember"
      id="c4024d92-90a7-4eef-8e21-d3af715e24cd">&lt;span style="color:#000000;font-family:Times New Roman;font-size:8pt;"&gt;&#x25cf;&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-style:italic;"&gt;Management and Operational Risk&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; &#x2013; The Fund runs the risk that GMO&#x2019;s investment techniques will fail to produce intended results.&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;The Fund also runs the risk that GMO&#x2019;s assessment of an investment, including a security&#x2019;s fundamental fair (or intrinsic) value, is wrong or that deficiencies in GMO&#x2019;s or another service provider&#x2019;s internal systems or controls will cause losses for the Fund or impair Fund operations.&lt;/span&gt;</oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="S000007516_LargeTransactionsRiskMember"
      id="x_4af033fb-9898-4b22-9f7f-358e2de36f70">&lt;span style="color:#000000;font-family:Times New Roman;font-size:8pt;"&gt;&#x25cf;&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-style:italic;"&gt;Large Transactions Risk&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; &#x2013; To the extent that a large number of shares of the Fund is held by a single shareholder (e.g., an institutional investor or another GMO Fund) or a group of shareholders with a common investment strategy (e.g., GMO asset allocation accounts), the Fund is subject to the risk that a redemption by (or caused by) that shareholder or group will require the &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;margin-left:0.00%;"&gt;Fund to sell investments at disadvantageous prices, disrupt the Fund&#x2019;s operations, lead to temporary overexposure to the Fund&#x2019;s intended investment program or force the Fund&#x2019;s liquidation. The Fund also may be subject to these effects when a number of &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;shareholders collectively redeem or sell a large amount of Fund shares.&lt;/span&gt;</oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="S000007516_MarketDisruptionandGeopoliticalRiskMember"
      id="edf966bc-9aab-4de8-a7f9-c339a99c666a">&lt;span style="color:#000000;font-family:Times New Roman;font-size:8pt;"&gt;&#x25cf;&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-style:italic;"&gt;Market Disruption and Geopolitical Risk&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; &#x2013; Geopolitical and other events (e.g., wars, pandemics, sanctions, terrorism, diplomatic tensions, dramatic changes in regulatory and/or foreign policy, cyberattacks, and rapid technological developments such as artificial intelligence) often disrupt securities markets and adversely affect the general economy or particular economies and markets. Those events, as well as other changes in non-U.S. and U.S. economic and political conditions, could exacerbate other risks or otherwise reduce the value of the Fund&#x2019;s investments.&lt;/span&gt;</oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="S000007516_SmallerCompanyRiskMember"
      id="df01a3bf-9c48-44fc-a059-be2cb8a63667">&lt;span style="color:#000000;font-family:Times New Roman;font-size:8pt;"&gt;&#x25cf;&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-style:italic;"&gt;Smaller Company Risk&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; &#x2013; Smaller companies may have limited product lines, markets, or financial resources, lack the competitive strength of larger companies, have less experienced managers or depend on a few key employees. The securities of companies with smaller market capitalizations often are less widely held and trade less frequently and in lesser quantities, and their market prices often fluctuate more, than the securities of companies with larger market capitalizations.&lt;/span&gt;</oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="S000007516_NonUSInvestmentRiskMember"
      id="x_6caa1bfa-78a3-40ae-b4ef-f8e51f181678">&lt;span style="color:#000000;font-family:Times New Roman;font-size:8pt;"&gt;&#x25cf;&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-style:italic;"&gt;Non-U.S. Investment Risk&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; &#x2013; The market prices of many non-U.S. securities fluctuate more than those of U.S. securities. Many non-U.S. securities markets are less stable, smaller, less liquid, and less regulated than U.S. securities markets, and the cost of trading in those markets often is higher than in U.S. securities markets. In addition, non-U.S. securities issuers often are not subject to as much regulation as U.S. issuers, and the reporting, recordkeeping, accounting, custody, and auditing standards to which those issuers are subject often are not as rigorous as U.S. standards. In addition, the Fund is subject to taxation by countries other than the United States, including potentially on a retroactive basis, on (i) capital gains it realizes or dividends, interest, or other amounts it realizes or accrues in respect of non-U.S. investments; (ii) transactions in those investments; and (iii) repatriation of proceeds generated from the sale or other disposition of those investments.&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; Also, the Fund needs a license to invest directly in securities &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;traded in many non-U.S. securities markets, and the Fund is subject to the risk that its license is terminated or suspended. In some non-U.S. securities markets, prevailing custody and trade settlement practices (e.g., the requirement to pay for securities prior to receipt) expose the Fund to credit and other risks. Further, adverse changes in investment regulations, capital requirements or exchange controls could adversely affect the value of the Fund&#x2019;s investments. The risks above (such as substantial price fluctuations and market instability, illiquidity and lack of regulation) and other risks (e.g., nationalization, expropriation or other confiscation of assets of non-U.S. issuers, difficulties enforcing legal judgments or contractual rights and geopolitical risks) tend to be higher for investments in the securities of issuers tied economically to emerging countries. The economies of emerging countries often depend predominantly on only a few industries or commodities and often are more volatile than the economies of developed countries.&lt;/span&gt;</oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="S000007516_CurrencyRiskMember"
      id="a9e4fd3c-87fb-4b90-be06-085ccf061b20">&lt;span style="color:#000000;font-family:Times New Roman;font-size:8pt;"&gt;&#x25cf;&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-style:italic;"&gt;Currency Risk&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; &#x2013; Fluctuations in exchange rates can adversely affect the market value of the Fund&#x2019;s foreign currency holdings and investments denominated in foreign currencies.&lt;/span&gt;</oef:RiskTextBlock>
    <oef:BarChartAndPerformanceTableHeading
      contextRef="S000007516"
      id="ea655ec1-f347-42c5-ad3d-bb5f5c8da942">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-weight:bold;"&gt;Performance&lt;/span&gt;</oef:BarChartAndPerformanceTableHeading>
    <oef:PerformanceNarrativeTextBlock
      contextRef="S000007516"
      id="x_11e43b63-2110-4a06-b276-a39ef0190655">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;margin-left:3.76%;"&gt;The bar chart and table below provide some indication of the risks of investing in the Fund by showing changes in the Fund&#x2019;s &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;annual total returns from year to year for the periods indicated and by comparing the Fund&#x2019;s average annual total returns for different calendar periods with those of the Bloomberg U.S. Securitized Index and an additional comparative index intended solely to represent, in satisfaction of regulatory requirements, the overall fixed income market.&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; Share classes not shown would have substantially similar &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;annual returns to those below because all share classes invest in the same portfolio of securities. Annual returns vary among share classes to the extent that they bear different expenses. Share classes that bear higher expenses than the share classes shown below would have lower returns. &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;After-tax returns are calculated using the historical highest individual federal marginal income tax rates and do not &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;reflect the impact of state and local taxes.&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; Actual after-tax returns depend on your tax situation and may differ from those shown. After-tax&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; returns shown are not relevant if you are tax-exempt or if you hold your Fund shares through tax-advantaged arrangements (such as a 401(k) plan or individual retirement account). &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;After-tax returns are shown for Class VI shares only; after-tax returns for other classes &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;will vary.&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; Updated performance information for the Fund is available at &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;www.gmo.com&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;. &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;Past performance (before and after taxes) is not an indication of future performance.&lt;/span&gt;</oef:PerformanceNarrativeTextBlock>
    <oef:PerformanceInformationIllustratesVariabilityOfReturns
      contextRef="S000007516"
      id="x_592d37ce-d5e2-4e54-ba4b-17b660a4198e">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;margin-left:3.76%;"&gt;The bar chart and table below provide some indication of the risks of investing in the Fund by showing changes in the Fund&#x2019;s &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;annual total returns from year to year for the periods indicated and by comparing the Fund&#x2019;s average annual total returns for different calendar periods with those of the Bloomberg U.S. Securitized Index and an additional comparative index intended solely to represent, in satisfaction of regulatory requirements, the overall fixed income market.&lt;/span&gt;</oef:PerformanceInformationIllustratesVariabilityOfReturns>
    <oef:PerformanceTableUsesHighestFederalRate
      contextRef="S000007516"
      id="x_336c2a9f-1c74-49e5-b774-a9be108b8258">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;After-tax returns are calculated using the historical highest individual federal marginal income tax rates and do not &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;reflect the impact of state and local taxes.&lt;/span&gt;</oef:PerformanceTableUsesHighestFederalRate>
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      contextRef="S000007516"
      id="be4b8f16-b4bd-4159-b42e-f72794675190">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; Actual after-tax returns depend on your tax situation and may differ from those shown. After-tax&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; returns shown are not relevant if you are tax-exempt or if you hold your Fund shares through tax-advantaged arrangements (such as a 401(k) plan or individual retirement account). &lt;/span&gt;</oef:PerformanceTableNotRelevantToTaxDeferred>
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      contextRef="S000007516"
      id="x_64bc154f-d6d6-40d1-a065-6313bd4bb1fd">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;After-tax returns are shown for Class VI shares only; after-tax returns for other classes &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;will vary.&lt;/span&gt;</oef:PerformanceTableOneClassOfAfterTaxShown>
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      id="x_50d0f0eb-55e2-4325-809e-d881d947ca7b">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;www.gmo.com&lt;/span&gt;</oef:PerformanceAvailabilityWebSiteAddress>
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      contextRef="S000007516"
      id="x_443cea50-1d01-45f5-9e8b-b63950441da2">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;Past performance (before and after taxes) is not an indication of future performance.&lt;/span&gt;</oef:PerformancePastDoesNotIndicateFuture>
    <oef:BarChartHeading
      contextRef="S000007516"
      id="x_1b36caa0-51ee-4660-9fad-b6d02d5b817c">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-weight:bold;"&gt;Annual Total Returns/Class VI Shares&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:6.5pt;font-weight:bold;position:relative;top:-2.75pt;"&gt;1&lt;/span&gt; &lt;br/&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;Years Ending December 31&lt;/span&gt;</oef:BarChartHeading>
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      id="dcdd3be5-b6fc-4310-bdde-86391e3dcba2">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;Highest Quarter:&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;4.55%&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;-sec-ix-hidden:x_7c6dc6da-d200-4073-b53e-6bad0380c2cf"&gt;2Q 2020&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;Lowest Quarter:&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;-4.05%&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;-sec-ix-hidden:x_742986a1-dfcc-4be3-beb8-0a883722e36a"&gt;1Q 2020&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;Year-to-Date:&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;2.11%&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;As of&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;3/31/2025&lt;/span&gt;</oef:BarChartClosingTextBlock>
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      id="d0a2444c-5b04-4ddb-bd78-c21a5d6b51ee">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;Highest Quarter:&lt;/span&gt;</oef:HighestQuarterlyReturnLabel>
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      contextRef="S000007516_C000020548"
      decimals="4"
      id="x_6eab08cf-4eb2-43cc-8fae-456cfcbfa07a"
      unitRef="pure">0.0455</oef:BarChartHighestQuarterlyReturn>
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      id="x_6a1f2832-7418-4d0f-b979-ba445df91335">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;Lowest Quarter:&lt;/span&gt;</oef:LowestQuarterlyReturnLabel>
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      decimals="4"
      id="x_9fc88b95-7551-4ae5-831a-a25b9de1d64c"
      unitRef="pure">-0.0405</oef:BarChartLowestQuarterlyReturn>
    <oef:YearToDateReturnLabel
      contextRef="S000007516_C000020548"
      id="x_77b2730d-82fb-4df8-a327-89c303b27aac">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;Year-to-Date:&lt;/span&gt;</oef:YearToDateReturnLabel>
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      contextRef="S000007516_C000020548"
      decimals="4"
      id="f5084909-7f89-44a8-b0f4-891fb6e63adb"
      unitRef="pure">0.0211</oef:BarChartYearToDateReturn>
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      contextRef="S000007516_C000020548"
      id="x_42966b88-9f6a-465f-8572-42369d1b5f61">2025-03-31</oef:BarChartYearToDateReturnDate>
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      id="x_09d8262c-acea-4bbb-98d0-8df5da28d2ab">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-weight:bold;"&gt;Average Annual Total Returns&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:6.5pt;font-weight:bold;position:relative;top:-2.75pt;"&gt;1,2&lt;/span&gt; &lt;br/&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;Periods Ending December 31, 2024&lt;/span&gt;</oef:PerformanceTableHeading>
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      id="ab2e5058-b5e1-4c42-948e-a304b06898d5">2022-02-01</oef:PerfInceptionDate>
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      decimals="4"
      id="bdcf9129-be4d-482d-b65f-6a84f7b5886f"
      unitRef="pure">0.0597</oef:AvgAnnlRtrPct>
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      decimals="4"
      id="x_4cce50a5-7b3e-4ec3-b43a-82f662ed327f"
      unitRef="pure">0.0361</oef:AvgAnnlRtrPct>
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      decimals="4"
      id="f91659da-c31b-478f-a030-cea27ac13e24"
      unitRef="pure">0.0146</oef:AvgAnnlRtrPct>
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      contextRef="C000137450_BloombergUSSecuritizedIndexMember_01Feb2022_31Dec2024"
      decimals="4"
      id="fd6dad93-d5bf-48b2-8cf7-bba8a19c3d1d"
      unitRef="pure">-0.0150</oef:AvgAnnlRtrPct>
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      contextRef="C000137450_BloombergUSAggregateIndexMember_01Jan2024_31Dec2024"
      decimals="4"
      id="x_5bf736ec-53da-4eee-b4ad-b20efff303d8"
      unitRef="pure">0.0125</oef:AvgAnnlRtrPct>
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      decimals="4"
      id="eef27a20-bf7e-4ab1-a346-539527890741"
      unitRef="pure">-0.0173</oef:AvgAnnlRtrPct>
    <oef:PerfInceptionDate
      contextRef="C000020548"
      id="d065fdfa-57fc-4048-bb52-ab739851a8c9">2011-10-03</oef:PerfInceptionDate>
    <oef:AvgAnnlRtrPct
      contextRef="C000020548_01Jan2024_31Dec2024"
      decimals="4"
      id="e012a1d1-d5a4-480a-bf71-092f1be79ab6"
      unitRef="pure">0.0611</oef:AvgAnnlRtrPct>
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      contextRef="C000020548_01Jan2020_31Dec2024"
      decimals="4"
      id="b70ce7dd-1f8c-4f8f-a5ec-6a622ae8d852"
      unitRef="pure">0.0340</oef:AvgAnnlRtrPct>
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      contextRef="C000020548_01Jan2015_31Dec2024"
      decimals="4"
      id="x_83cff12e-16a4-4e3a-b82c-729a327d5c95"
      unitRef="pure">0.0380</oef:AvgAnnlRtrPct>
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      contextRef="C000020548_03Oct2011_31Dec2024"
      decimals="4"
      id="a78d2185-0c46-4ff7-947a-09fed68ca137"
      unitRef="pure">0.0450</oef:AvgAnnlRtrPct>
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      contextRef="C000020548_AfterTaxesOnDistributionsMember_01Jan2024_31Dec2024"
      decimals="4"
      id="x_355dba40-2231-4191-b1e9-9b920972a32d"
      unitRef="pure">0.0386</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000020548_AfterTaxesOnDistributionsMember_01Jan2020_31Dec2024"
      decimals="4"
      id="x_6f0ca410-0527-4005-8aa0-3151fda7d4e0"
      unitRef="pure">0.0154</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000020548_AfterTaxesOnDistributionsMember_01Jan2015_31Dec2024"
      decimals="4"
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      id="x_14b1bb56-fd32-438f-b388-7ca7e1f76e60">&lt;span style="color:#000000;font-family:Times New Roman;font-size:8pt;font-style:italic;"&gt;June 30, 2026&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:8pt;font-style:italic;"&gt;June 30, 2026&lt;/span&gt;</oef:FeeWaiverOrReimbursementOverAssetsDateOfTermination>
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      id="d35dfb33-be45-4336-8b9c-169bdeff769b">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-weight:bold;"&gt;Example&lt;/span&gt;</oef:ExpenseExampleHeading>
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      id="x_95c064d9-bf81-446e-84f6-f2dfbd63c7d9">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;margin-left:3.76%;"&gt;This example is intended to help you compare the cost of investing in the Fund with the cost of investing in other funds. The &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;example assumes that you invest $10,000 in the Fund for the time periods indicated, regardless of whether or not you redeem your shares at the end of such periods. The example also assumes that your investment has a 5% return each year and that the Fund&#x2019;s operating expenses remain the same as those shown in the table. The one year amounts shown reflect the expense reimbursement and waiver noted in the expense table. Although your actual costs may be higher or lower, based on these assumptions your costs would be:&lt;/span&gt;</oef:ExpenseExampleNarrativeTextBlock>
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      id="x_846e7e47-00f6-4cd2-9e94-4cf9d9f1f2b6"
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      id="x_7927b5b0-fbca-4584-9adf-96adfdf2d089"
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      id="x_545c0abc-1fb5-434d-a5e1-97eb928c2059"
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      id="x_53802a56-4a4d-4eaa-b417-5d3a4317f7b0"
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      contextRef="S000065268_C000213405"
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      decimals="INF"
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      contextRef="S000065268_C000213406"
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      id="c54b257d-ba09-48a3-8aaf-7d97e47be40b">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-weight:bold;"&gt;Portfolio turnover&lt;/span&gt;</oef:PortfolioTurnoverHeading>
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      id="x_36d9a15c-a973-4e10-87b6-4ec60a6d4fa0">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;margin-left:3.76%;"&gt;The Fund pays transaction costs, such as commissions, when it buys and sells securities. A higher portfolio turnover rate may &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;result in higher transaction costs and, for holders of Fund shares subject to U.S. taxes, higher income taxes. These transaction costs, which are not reflected in Annual Fund operating expenses or in the Example, affect the Fund&#x2019;s performance.&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; During its fiscal year &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;ended February 28, 2025, the Fund&#x2019;s portfolio turnover rate (including the accounts of the Fund&#x2019;s wholly-owned subsidiary, GMO Alternative Allocation SPC Ltd., and&#160;excluding short-term investments) was &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;1119&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;% of the average value of its portfolio securities.&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; That &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;portfolio turnover rate includes investments in U.S. Treasury Fund, which the Fund uses as a short-term investment vehicle for cash management. The Fund&#x2019;s portfolio turnover rate during its fiscal year ended February 28, 2025 (including the accounts of GMO Alternative Allocation SPC Ltd., and&#160;excluding transactions in U.S. Treasury Fund and other short-term investments) was 1129% of the average value of its portfolio securities.&lt;/span&gt;</oef:PortfolioTurnoverTextBlock>
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      id="fae70794-56b7-4632-ba42-ab7833f3a60c">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-weight:bold;"&gt;Principal investment strategies&lt;/span&gt;</oef:StrategyHeading>
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      id="x_7c8a577d-cc9c-4523-a1ee-e738effc3ae9">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;margin-left:3.76%;"&gt;The Fund seeks annualized returns of 4% (net of fees) above cash (FTSE 3-Month Treasury Bill Index) over a complete market &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;cycle by obtaining long and/or short exposures to a variety of investment styles (&#x201c;Styles&#x201d;) across the following asset groups: stocks, equity indices, bonds, interest rates, currencies and commodities (&#x201c;Asset Groups&#x201d;). The Fund&#x2019;s long and short exposures to Styles and Asset Groups depend on GMO&#x2019;s evaluation of investment opportunities. The Fund will pursue exposure to Styles and Asset Groups through a variety of underlying strategies. The Styles typically employed by the Fund are:&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-weight:bold;margin-left:3.76%;"&gt;Value:&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; Value strategies seek to identify opportunities to buy assets that appear inexpensive and sell assets that appear expensive based on fundamental measures related to price, seeking to capture the tendency for relatively inexpensive assets to outperform relatively expensive assets. The Fund will seek to buy assets that GMO believes are relatively inexpensive and sell those that GMO believes are relatively expensive. Examples of value strategies include using price-to-earnings and price-to-book ratios for selecting stocks.&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-weight:bold;margin-left:3.76%;"&gt;Quality:&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; Quality strategies favor investments that exhibit relatively higher quality characteristics. GMO believes a high quality company generally to be a company that has an established business that will deliver a high level of return on past investments and that will use cash flows to make investments with the potential for a high return on capital or to return cash to shareholders through dividends or share buybacks. An example of a quality strategy is seeking long exposure to high quality companies and/or short exposure to low quality companies that GMO believes to be of low quality.&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-weight:bold;margin-left:3.76%;"&gt;Carry:&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; &#x201c;Carry&#x201d; is typically defined as the return of an asset assuming that market conditions or valuations stay the same. Carry strategies favor investments with higher yields over those with lower yields, seeking to capture the tendency for higher-yielding assets to provide higher returns than lower-yielding assets. An example of carry measures includes selecting currencies and bonds based on interest rates.&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-weight:bold;margin-left:3.76%;"&gt;Momentum:&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; Momentum strategies favor investments that have performed relatively well over those that have underperformed over the medium-term (i.e., one year or less), seeking to capture the tendency that an asset&#x2019;s recent relative performance will continue in the near future. Examples of momentum measures include simple price momentum for selecting stocks and price- and yield-based momentum for selecting bonds.&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-weight:bold;margin-left:3.76%;"&gt;Volatility: &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;Volatility is a statistical measurement of the dispersion of returns of an asset, as measured by the annualized standard deviation of its returns. Historically, the average implied volatility of index options has exceeded the realized volatility of the underlying index. This difference represents the volatility premium, or market participants&#x2019; willingness to pay for protection against losses when volatility suddenly increases. An example of a volatility strategy is selling or writing put options (hedged or unhedged) on various equity and credit indices.&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-weight:bold;margin-left:3.76%;"&gt;Trend:&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; Trend strategies seek to capture the historical tendency of an asset&#x2019;s recent (relative or absolute) performance to continue into the future. The Fund may have both long and short positions in different assets depending on their respective price and/or economic trends. An example of a trend measure is using short-term prices (e.g., prices over a one- to three-month period) to select an equity index.&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-weight:bold;margin-left:3.76%;"&gt;Event-Driven: &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;Event-driven strategies seek to benefit from movements in equity prices in connection with material corporate events, such as merger and acquisition transactions, corporate restructurings, and other transaction types and regulatory events.&#160; Where GMO believes a material corporate event is likely to occur (or not occur), the Fund may take long and/or short positions in equities of companies that are the subjects of such corporate events.&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;margin-left:3.76%;"&gt;The Fund&#x2019;s Styles may change over time and the allocation of Fund exposures to and among the Styles and Asset Groups will also &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;change over time. GMO does not expect the Fund&#x2019;s performance to be highly correlated with that of traditional equity market indices. GMO does not manage the Fund to, or control the Fund&#x2019;s risk relative to, any securities index or securities benchmark, and GMO does not expect the Fund&#x2019;s performance to be highly correlated with that of traditional equity or fixed income market indices. The Fund typically has gross investment exposure in excess of its net assets (i.e., the Fund typically is leveraged) and therefore is subject to higher risk of loss than if the Fund were not leveraged. GMO does not seek to achieve a particular volatility level or range for the Fund but expects the Fund&#x2019;s typical volatility to be between 4% and 12%. The Fund at times may have substantial exposure to a single Style, asset class, sector, country, region, issuer, or currency and companies with similar market capitalizations. The Fund is not restricted in its exposure to any particular Style, Asset Group or market and may invest in securities of companies of any market capitalization.&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;margin-left:3.76%;"&gt;In seeking to achieve its investment objective, the Fund may invest in exchange-traded and over-the-counter (OTC) derivatives, &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;which may include options, futures, forward currency contracts, and swap contracts. The Fund may lend its portfolio securities.&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;margin-left:3.76%;"&gt;The Fund gains exposure to commodities and some other asset classes by investing through a wholly-owned subsidiary advised by &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;GMO, which does not receive any management or other fees for its services to the subsidiary. The subsidiary invests primarily in commodity-related derivatives (such as over-the-counter swaps on commodity indices) and fixed income investments but also may invest in any other investment in which the Fund is permitted to invest directly. References in this Prospectus to actions taken by the Fund refer to actions taken by the subsidiary as well as the Fund. The Fund does not invest directly in commodities and commodity-related derivatives (such as swaps on commodity indices).&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;margin-left:3.76%;"&gt;The Fund also may invest in money market funds unaffiliated with GMO and directly in the types of investments typically held by &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;money market funds.&lt;/span&gt;</oef:StrategyNarrativeTextBlock>
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      id="x_4e37d055-f995-4e5b-93e4-4472e7031783">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;Many factors can affect this value, and you may lose money by investing in the Fund.&lt;/span&gt;</oef:RiskTextBlock>
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      id="x_51de1075-9aea-4282-afe7-d42b2ba363f2">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;An investment in the Fund is not a bank deposit and is not insured or guaranteed by the FDIC or &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;any government agency.&lt;/span&gt;</oef:RiskTextBlock>
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      id="x_597df175-920e-4b01-ac9e-78a399282277">&lt;span style="color:#000000;font-family:Times New Roman;font-size:8pt;"&gt;&#x25cf;&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-style:italic;"&gt;Management and Operational Risk&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; &#x2013; The Fund runs the risk that GMO&#x2019;s investment techniques will fail to produce intended results, including the annualized returns and volatility the Fund is seeking to achieve. Even if the Fund achieves those returns or that volatility over a market cycle, it may experience shorter periods of significantly lower returns or higher volatility, or both.&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; GMO &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;uses quantitative models as part of its investment process. GMO&#x2019;s models may not accurately predict future market movements. In addition, GMO&#x2019;s models rely on assumptions and data that are subject to limitations (e.g., inaccuracies, staleness) that could adversely affect their predictive value.&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; The Fund also runs the risk that GMO&#x2019;s assessment of an investment, including a security&#x2019;s &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;fundamental fair (or intrinsic) value, is wrong or that deficiencies in GMO&#x2019;s or another service provider&#x2019;s internal systems or controls will cause losses for the Fund or impair Fund operations.&lt;/span&gt;</oef:RiskTextBlock>
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      contextRef="S000065268_LeveragingRiskMember"
      id="x_96d0ef22-ccc2-4dcc-a851-4e5bd422fdef">&lt;span style="color:#000000;font-family:Times New Roman;font-size:8pt;"&gt;&#x25cf;&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-style:italic;"&gt;Leveraging Risk&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; &#x2013; The use of derivatives, short sales and securities lending can create leverage. Leverage increases the Fund&#x2019;s losses when the value of its investments (including derivatives) declines. In addition, the Fund&#x2019;s portfolio will be leveraged if it exercises its right to delay payment on a redemption and the value of the Fund&#x2019;s assets declines between the time a redemption request is treated as being received by the Fund and the time the Fund liquidates assets to fund that redemption.&lt;/span&gt;</oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="S000065268_DerivativesandShortSalesRiskMember"
      id="fca83287-fb83-4ec8-99b9-5a66980c7d64">&lt;span style="color:#000000;font-family:Times New Roman;font-size:8pt;"&gt;&#x25cf;&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-style:italic;"&gt;Derivatives and Short Sales Risk&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; &#x2013; The use of derivatives involves the risk that their value may not change as expected relative to changes in the value of the underlying assets, pools of assets, rates, currencies or indices. Derivatives also present other risks, including market risk, illiquidity risk, currency risk, credit risk, leveraging risk, commodities risk and counterparty risk. The market price of an option is affected by many factors, including changes in the market prices or dividend rates of underlying securities (or in the case of indices, the securities in such indices); the time remaining before expiration; changes in interest rates or exchange rates; and changes in the actual or perceived volatility of the relevant index or underlying securities. The Fund typically creates short &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;margin-left:0.00%;"&gt;investment exposure by selling securities short or by taking a derivative position in which the value of the derivative moves in the opposite direction from the price of an underlying asset, pool of assets, rate, currency or index. Specifically, the net asset value of the Fund&#x2019;s shares will be adversely affected if the securities or other assets that are the subject of the Fund&#x2019;s short exposures appreciate in value. The risk of loss associated with derivatives that provide short investment exposure and short sales of securities &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;is theoretically unlimited.&lt;/span&gt;</oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="S000065268_MarketRiskEquitiesRiskMember"
      id="x_796ee185-5631-437c-8fb0-6e50bf65d3f6">&lt;span style="color:#000000;font-family:Times New Roman;font-size:8pt;"&gt;&#x25cf;&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-style:italic;"&gt;Market Risk &#x2013; Equities &#x2013; &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;The market price of an equity in the Fund&#x2019;s portfolio may decline due to factors affecting the issuer or its industry or the economy and equity markets generally. If the Fund purchases an equity for less than its fundamental fair (or intrinsic) value as assessed by GMO, the Fund runs the risk that the market price of the equity will not appreciate or will decline (for example, if GMO&#x2019;s assessment proves to be incorrect or the market fails to recognize the equity&#x2019;s intrinsic value). The Fund also may purchase equities that typically trade at higher multiples of current earnings than other securities, and the market prices of these equities often are more sensitive to changes in future earnings expectations and interest rates than the market prices of equities trading at lower multiples. Declines in stock market prices generally are likely to reduce the net asset value of the Fund&#x2019;s shares.&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;When the Fund writes put options on a stock index, the value of those options will decline when the value of that index declines. The value of an index depends on the value of the equity securities in the index. Also, the Fund&#x2019;s investment strategy of writing put options on stock indices can be expected to cause that strategy to underperform relative to those indices when the value of those indices rises sharply.&lt;/span&gt;</oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="S000065268_MarketRiskFixedIncomeRiskMember"
      id="efa53d4c-1b0c-4650-9912-c3a2e8ccee8a">&lt;span style="color:#000000;font-family:Times New Roman;font-size:8pt;"&gt;&#x25cf;&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-style:italic;"&gt;Market Risk &#x2013; Fixed Income&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; &#x2013; The market price of a fixed income investment can decline due to market-related factors, including rising interest or inflation rates and widening credit spreads, or decreased liquidity due, for example, to market uncertainty about the value of a fixed income investment (or class of fixed income investments).&lt;/span&gt;</oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="S000065268_CreditRiskMember"
      id="ce513808-9a79-4bf6-a154-333c756a2672">&lt;span style="color:#000000;font-family:Times New Roman;font-size:8pt;"&gt;&#x25cf;&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-style:italic;"&gt;Credit Risk&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; &#x2013; The Fund runs the risk that the issuer or guarantor of a fixed income investment (including a sovereign or quasi-sovereign debt issuer) or the obligor of an obligation underlying an asset-backed security will be unable or unwilling to satisfy its obligation to pay principal and interest or otherwise to honor its obligations in a timely manner or at all. The market price of a fixed income investment will normally decline as a result of the failure of an issuer, guarantor, or obligor to meet its payment obligations or in anticipation of such a failure. Below investment grade investments (commonly referred to as high yield or &#x201c;junk&#x201d; bonds) have speculative characteristics and are subject to greater credit risk than other fixed income investments. Negative changes in economic conditions or other circumstances are more likely to impair the ability of issuers of below investment grade investments to make principal and interest payments than issuers of investment grade investments.&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; Investments in distressed or defaulted or other low &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;quality debt investments generally are considered speculative and are subject to substantial risks not normally associated with investments in higher quality securities, including adverse business, financial or economic conditions that lead to their issuers&#x2019; payment defaults and insolvency proceedings. In particular, distressed or defaulted obligations might be repaid, if at all, only after lengthy workout or bankruptcy proceedings during which the issuer might not make any interest or other payments, and the Fund may incur additional expenses in its effort to be repaid. If GMO&#x2019;s assessment of the eventual recovery value of a distressed or defaulted debt investment proves incorrect, the Fund may lose a substantial portion or all of its original investment or may be required to accept cash or instruments worth less than its original investment.&lt;/span&gt;</oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="S000065268_CounterpartyRiskMember"
      id="x_7edd4922-9776-40f7-8cad-a30840477928">&lt;span style="color:#000000;font-family:Times New Roman;font-size:8pt;"&gt;&#x25cf;&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-style:italic;"&gt;Counterparty Risk&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; &#x2013; The Fund runs the risk that the counterparty to a derivatives contract or a clearing member used by the Fund to hold a cleared derivatives contract is unable or unwilling to make timely settlement payments, return the Fund&#x2019;s collateral or otherwise honor its obligations.&lt;/span&gt;</oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="S000065268_FuturesContractsRiskMember"
      id="x_8ad04254-c9a7-4084-b4e1-da63f9a1125f">&lt;span style="color:#000000;font-family:Times New Roman;font-size:8pt;"&gt;&#x25cf;&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-style:italic;"&gt;Futures Contracts Risk&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; &#x2013; The loss to the Fund resulting from its use of futures contracts is potentially unlimited. Futures markets are highly volatile, and the use of futures contracts increases the volatility of the Fund&#x2019;s net asset value. A liquid market may not exist for any particular futures contract at any particular time, and the Fund may be unable when it wishes to terminate its exposure under that contract. When the Fund uses futures contracts for hedging purposes, it runs the risk that changes in the prices of the contracts will not correlate perfectly with changes in the securities, index, or other asset underlying the contracts or movements in the prices of the Fund&#x2019;s investments that are subject to the hedge. In addition, the Fund may be unable to recover or may be delayed in recovering margin or other amounts deposited with a futures commission merchant or futures clearinghouse. Foreign futures contracts are often less liquid and more volatile than U.S. futures contracts.&lt;/span&gt;</oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="S000065268_NonUSInvestmentRiskMember"
      id="df83f0c7-7dd4-476d-a494-3e42d820f86f">&lt;span style="color:#000000;font-family:Times New Roman;font-size:8pt;"&gt;&#x25cf;&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-style:italic;"&gt;Non-U.S. Investment Risk&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; &#x2013; The market prices of many non-U.S. securities fluctuate more than those of U.S. securities. Many non-U.S. securities markets are less stable, smaller, less liquid, and less regulated than U.S. securities markets, and the cost of trading in those markets often is higher than in U.S. securities markets. In addition, non-U.S. securities issuers often are not subject to as much regulation as U.S. issuers, and the reporting, recordkeeping, accounting, custody, and auditing standards to which those issuers are subject often are not as rigorous as U.S. standards. In addition, the Fund is subject to taxation by countries other than the United States, including potentially on a retroactive basis, on (i) capital gains it realizes or dividends, interest, or other amounts it realizes or accrues in respect of non-U.S. investments; (ii) transactions in those investments; and (iii) repatriation of proceeds generated from the sale or other disposition of those investments.&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; Also, the Fund needs a license to invest directly in securities &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;traded in many non-U.S. securities markets, and the Fund is subject to the risk that its license is terminated or suspended. In some non-U.S. securities markets, prevailing custody and trade settlement practices (e.g., the requirement to pay for securities prior to receipt) expose the Fund to credit and other risks. Further, adverse changes in investment regulations, capital requirements or exchange controls could adversely affect the value of the Fund&#x2019;s investments. The risks above (such as substantial price fluctuations &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;margin-left:0.00%;"&gt;and market instability, illiquidity and lack of regulation) and other risks (e.g., nationalization, expropriation or other confiscation of assets of non-U.S. issuers, difficulties enforcing legal judgments or contractual rights and geopolitical risks) tend to be higher for investments in the securities of issuers tied economically to emerging countries. The economies of emerging countries often depend &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;predominantly on only a few industries or commodities and often are more volatile than the economies of developed countries.&lt;/span&gt;</oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="S000065268_EventDrivenRiskMember"
      id="x_66da5d02-1f59-4485-9ed4-b27f47b0bb41">&lt;span style="color:#000000;font-family:Times New Roman;font-size:8pt;"&gt;&#x25cf;&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-style:italic;"&gt;Event-Driven Risk&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; &#x2013; If the Fund purchases securities in anticipation of a proposed merger, acquisition, exchange offer, tender offer, or other similar transaction and that transaction later appears likely to be delayed or unlikely to be consummated or, in fact, is not consummated or is delayed, the market price of the securities purchased by the Fund may decline sharply, resulting in losses to the Fund. The risk/reward payout of event-driven strategies (such as merger arbitrage) typically is asymmetric, with the losses in failed transactions often far exceeding the gains in successful transactions. Event-driven strategies are subject to the risk of overall market movements, and the Fund may experience losses even if a transaction is consummated.&lt;/span&gt;</oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="S000065268_FundofFundsRiskMember"
      id="x_86fbe1d7-4169-4611-964d-b6d6ae50347f">&lt;span style="color:#000000;font-family:Times New Roman;font-size:8pt;"&gt;&#x25cf;&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-style:italic;"&gt;Fund of Funds Risk&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; &#x2013; The Fund is indirectly exposed to all of the risks of an investment in its wholly-owned subsidiary and the underlying funds in which it invests, including the risk that its wholly-owned subsidiary and those underlying funds will not perform as expected.&lt;/span&gt;</oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="S000065268_CurrencyRiskMember"
      id="b55f1e17-8541-4058-9d96-4a9d78cfc47c">&lt;span style="color:#000000;font-family:Times New Roman;font-size:8pt;"&gt;&#x25cf;&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-style:italic;"&gt;Currency Risk&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; &#x2013; Fluctuations in exchange rates can adversely affect the market value of the Fund&#x2019;s foreign currency holdings and investments denominated in foreign currencies.&lt;/span&gt;</oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="S000065268_CommoditiesRiskMember"
      id="x_27d5d841-5b03-4d92-af24-ac068e5df0d2">&lt;span style="color:#000000;font-family:Times New Roman;font-size:8pt;"&gt;&#x25cf;&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-style:italic;"&gt;Commodities Risk&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; &#x2013; Commodity prices can be extremely volatile, and exposure to commodities can cause the net asset value of the Fund&#x2019;s shares to decline or fluctuate significantly.&lt;/span&gt;</oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="S000065268_MarketDisruptionandGeopoliticalRiskMember"
      id="x_9af31294-7fec-44c1-a80d-88bb15273e48">&lt;span style="color:#000000;font-family:Times New Roman;font-size:8pt;"&gt;&#x25cf;&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-style:italic;"&gt;Market Disruption and Geopolitical Risk&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; &#x2013; Geopolitical and other events (e.g., wars, pandemics, sanctions, terrorism, diplomatic tensions, dramatic changes in regulatory and/or foreign policy, cyberattacks, and rapid technological developments such as artificial intelligence) often disrupt securities markets and adversely affect the general economy or particular economies and markets. Those events, as well as other changes in non-U.S. and U.S. economic and political conditions, could exacerbate other risks or otherwise reduce the value of the Fund&#x2019;s investments.&lt;/span&gt;</oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="S000065268_FocusedInvestmentRiskMember"
      id="x_8f63f1e4-fcf1-49e1-8876-27fd58e2dad6">&lt;span style="color:#000000;font-family:Times New Roman;font-size:8pt;"&gt;&#x25cf;&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-style:italic;"&gt;Focused Investment Risk&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; &#x2013; Investments in countries, regions, asset classes, sectors, industries, currencies, or issuers that are subject to the same or similar risk factors and investments whose market prices are closely correlated are subject to higher overall risk than investments that are more diversified or whose market prices are not as closely correlated.&lt;/span&gt;</oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="S000065268_IlliquidityRiskMember"
      id="bc321dad-20c8-4b52-98a2-ece91bbc0caa">&lt;span style="color:#000000;font-family:Times New Roman;font-size:8pt;"&gt;&#x25cf;&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-style:italic;"&gt;Illiquidity Risk&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; &#x2013; Low trading volume, lack of a market maker, large position size, or legal restrictions increase the risk that the Fund or an underlying fund is limited or prevented from selling particular securities or closing derivative positions at desirable prices at a particular time or at all.&lt;/span&gt;</oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="S000065268_LargeTransactionsRiskMember"
      id="d6c3c8a4-930d-4427-9b4f-1bdb0b6a07d6">&lt;span style="color:#000000;font-family:Times New Roman;font-size:8pt;"&gt;&#x25cf;&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-style:italic;"&gt;Large Transactions Risk&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; &#x2013; To the extent that a large number of shares of the Fund is held by a single shareholder (e.g., an institutional investor or another GMO Fund) or a group of shareholders with a common investment strategy (e.g., GMO asset allocation accounts), the Fund is subject to the risk that a redemption by (or caused by) that shareholder or group will require the Fund to sell investments at disadvantageous prices, disrupt the Fund&#x2019;s operations, lead to temporary overexposure to the Fund&#x2019;s intended investment program or force the Fund&#x2019;s liquidation. The Fund also may be subject to these effects when a number of shareholders collectively redeem or sell a large amount of Fund shares.&lt;/span&gt;</oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="S000065268_SmallerCompanyRiskMember"
      id="x_1c446657-c535-409f-a015-0480edb603d8">&lt;span style="color:#000000;font-family:Times New Roman;font-size:8pt;"&gt;&#x25cf;&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-style:italic;"&gt;Smaller Company Risk&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; &#x2013; Smaller companies may have limited product lines, markets, or financial resources, lack the competitive strength of larger companies, have less experienced managers or depend on a few key employees. The securities of companies with smaller market capitalizations often are less widely held and trade less frequently and in lesser quantities, and their market prices often fluctuate more, than the securities of companies with larger market capitalizations.&lt;/span&gt;</oef:RiskTextBlock>
    <oef:BarChartAndPerformanceTableHeading
      contextRef="S000065268"
      id="x_679533f5-6f73-44f4-9eff-ce5d2b19c23b">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-weight:bold;"&gt;Performance&lt;/span&gt;</oef:BarChartAndPerformanceTableHeading>
    <oef:PerformanceNarrativeTextBlock
      contextRef="S000065268"
      id="ec2d150b-0dd3-48f2-92fc-f3048e57e357">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;margin-left:3.76%;"&gt;The bar chart and table below provide some indication of the risks of investing in the Fund by showing changes in the Fund&#x2019;s &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;annual total returns from year to year for the periods indicated and by comparing the Fund&#x2019;s average annual total returns for different calendar periods with those of the FTSE 3-Month Treasury Bill Index and a broad-based securities market index.&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; Share classes not &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;shown would have substantially similar annual returns to those below because all share classes invest in the same portfolio of securities. Annual returns vary among share classes to the extent that they bear different expenses. Share classes that bear higher expenses than the share classes shown below would have lower returns. &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;After-tax returns are calculated using the historical highest individual federal &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;marginal income tax rates and do not reflect the impact of state and local taxes.&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; Actual after-tax returns depend on your tax situation &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;and may differ from those shown. After-tax returns shown are not relevant if you are tax-exempt or if you hold your Fund shares through tax-advantaged arrangements (such as a 401(k) plan or individual retirement account). &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;After-tax returns are shown for Class VI &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;shares only; after-tax returns for other classes will vary.&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; Updated performance information for the Fund is available at &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;www.gmo.com&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;. &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;Past performance (before and after taxes) is not an indication of future performance.&lt;/span&gt;</oef:PerformanceNarrativeTextBlock>
    <oef:PerformanceInformationIllustratesVariabilityOfReturns
      contextRef="S000065268"
      id="x_8d3bcf42-6f08-4211-a755-f6ae8aca8a09">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;margin-left:3.76%;"&gt;The bar chart and table below provide some indication of the risks of investing in the Fund by showing changes in the Fund&#x2019;s &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;annual total returns from year to year for the periods indicated and by comparing the Fund&#x2019;s average annual total returns for different calendar periods with those of the FTSE 3-Month Treasury Bill Index and a broad-based securities market index.&lt;/span&gt;</oef:PerformanceInformationIllustratesVariabilityOfReturns>
    <oef:PerformanceTableUsesHighestFederalRate
      contextRef="S000065268"
      id="x_00a7c5cb-2783-437b-a129-dce6f50205e6">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;After-tax returns are calculated using the historical highest individual federal &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;marginal income tax rates and do not reflect the impact of state and local taxes.&lt;/span&gt;</oef:PerformanceTableUsesHighestFederalRate>
    <oef:PerformanceTableNotRelevantToTaxDeferred
      contextRef="S000065268"
      id="x_614ad812-852f-4362-a360-34880e9663b0">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; Actual after-tax returns depend on your tax situation &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;and may differ from those shown. After-tax returns shown are not relevant if you are tax-exempt or if you hold your Fund shares through tax-advantaged arrangements (such as a 401(k) plan or individual retirement account). &lt;/span&gt;</oef:PerformanceTableNotRelevantToTaxDeferred>
    <oef:PerformanceTableOneClassOfAfterTaxShown
      contextRef="S000065268"
      id="x_23069c35-293d-4795-8e15-80416d0bb947">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;After-tax returns are shown for Class VI &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;shares only; after-tax returns for other classes will vary.&lt;/span&gt;</oef:PerformanceTableOneClassOfAfterTaxShown>
    <oef:PerformanceAvailabilityWebSiteAddress
      contextRef="S000065268"
      id="cf8897de-3a8d-426b-98d9-d2856f041d1b">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;www.gmo.com&lt;/span&gt;</oef:PerformanceAvailabilityWebSiteAddress>
    <oef:PerformancePastDoesNotIndicateFuture
      contextRef="S000065268"
      id="x_80bfedfa-1ba2-4674-84dc-9df8bbef14fc">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;Past performance (before and after taxes) is not an indication of future performance.&lt;/span&gt;</oef:PerformancePastDoesNotIndicateFuture>
    <oef:BarChartHeading
      contextRef="S000065268"
      id="x_0e8adb5f-b6ba-428d-af5d-a862be2c2d85">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-weight:bold;"&gt;Annual Total Returns/Class VI Shares&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:6.5pt;font-weight:bold;position:relative;top:-2.75pt;"&gt;1&lt;/span&gt; &lt;br/&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;Years Ending December 31&lt;/span&gt;</oef:BarChartHeading>
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      id="eae095a2-4989-4085-94ef-62129f4b38f0">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;Highest Quarter:&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;4.76%&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;-sec-ix-hidden:x_6ba1b628-4211-4baa-982e-7926e99718d0"&gt;4Q 2022&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;Lowest Quarter:&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;-6.99%&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;-sec-ix-hidden:x_2b85b927-4782-4f9c-860d-bb397c08d529"&gt;1Q 2020&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;Year-to-Date:&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;5.13%&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;As of&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;3/31/2025&lt;/span&gt;</oef:BarChartClosingTextBlock>
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      id="f448d6ff-23b2-4d4d-9154-7b5ab243e200">2025-03-31</oef:BarChartYearToDateReturnDate>
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      id="x_8a2429f9-5292-406b-9bc9-219a5bbff37c">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-weight:bold;"&gt;Average Annual Total Returns&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:6.5pt;font-weight:bold;position:relative;top:-2.75pt;"&gt;1&lt;/span&gt; &lt;br/&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;Periods Ending December 31, 2024&lt;/span&gt;</oef:PerformanceTableHeading>
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      contextRef="C000211299"
      id="a80d6691-9391-4d94-872d-0bffe5122ddb">2019-05-01</oef:PerfInceptionDate>
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      id="x_9d919cc5-3c32-486f-9840-60a3e9fc38bd"
      unitRef="pure">0.0249</oef:AvgAnnlRtrPct>
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      id="x_5a3b669c-1ba3-48c4-8145-a575679714b6"
      unitRef="pure">0.0125</oef:AvgAnnlRtrPct>
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      id="b3fd6ba0-36cf-4a36-befe-4286d87248e0"
      unitRef="pure">-0.0033</oef:AvgAnnlRtrPct>
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    <oef:PerfInceptionDate
      contextRef="C000213405"
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      id="x_8f548393-2ce1-4c53-9d47-5e181661035d"
      unitRef="pure">-0.0270</oef:AvgAnnlRtrPct>
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      contextRef="C000213405_31Jul2020_31Dec2024"
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      id="x_80df56cb-08b1-45f1-9a47-1eabc0cf3991"
      unitRef="pure">0.0111</oef:AvgAnnlRtrPct>
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      decimals="4"
      id="x_13f111bb-47c6-4a64-a198-55b9494e6812"
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      contextRef="C000213405_FTSE3MonthTreasuryBillIndexMember_31Jul2020_31Dec2024"
      decimals="4"
      id="x_93fe076d-1daf-493c-be9f-518ab10c6b97"
      unitRef="pure">0.0276</oef:AvgAnnlRtrPct>
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      decimals="4"
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      contextRef="C000213405_BloombergUSAggregateIndexMember_31Jul2020_31Dec2024"
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    <oef:PerfInceptionDate
      contextRef="C000213406"
      id="x_7a589cdc-59a4-4342-abfa-425840d048fe">2019-09-04</oef:PerfInceptionDate>
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      decimals="4"
      id="x_4872e659-0c1d-4f19-9a11-8c57849bfc5c"
      unitRef="pure">-0.0282</oef:AvgAnnlRtrPct>
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      contextRef="C000213406_01Jan2020_31Dec2024"
      decimals="4"
      id="ee468bb7-a5bd-4ead-a0a2-a1602622c895"
      unitRef="pure">0.0000</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000213406_04Sep2019_31Dec2024"
      decimals="4"
      id="x_2edb8586-1cba-4903-a91d-7fb10080e547"
      unitRef="pure">0.0033</oef:AvgAnnlRtrPct>
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      contextRef="C000213406_FTSE3MonthTreasuryBillIndexMember_01Jan2024_31Dec2024"
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      id="x_5214a11b-5d16-43bb-9242-4e26fe44311c"
      unitRef="pure">0.0545</oef:AvgAnnlRtrPct>
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      unitRef="pure">0.0254</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000213406_FTSE3MonthTreasuryBillIndexMember_04Sep2019_31Dec2024"
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      id="x_834c2e01-6dad-4c0e-a7da-5e571edb2d63"
      unitRef="pure">0.0250</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
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      unitRef="pure">0.0125</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
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      unitRef="pure">-0.0033</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
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    <oef:ObjectiveHeading
      contextRef="S000025199"
      id="x_42577fdd-7f08-41e6-b2ed-6d9294263119">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-weight:bold;"&gt;Investment objective&lt;/span&gt;</oef:ObjectiveHeading>
    <oef:ObjectivePrimaryTextBlock
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      id="x_3408da07-96c1-4814-b6a7-31ef00fdd54a">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;Total return in excess of that of its benchmark, the FTSE 3-Month Treasury Bill Index.&lt;/span&gt;</oef:ObjectivePrimaryTextBlock>
    <oef:ExpenseHeading
      contextRef="S000025199"
      id="x_557a61dc-9e61-4025-b07a-ca0cd45a1089">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-weight:bold;"&gt;Fees and expenses&lt;/span&gt;</oef:ExpenseHeading>
    <oef:ExpenseNarrativeTextBlock
      contextRef="S000025199"
      id="x_95394d5b-c3d2-4ad6-81e3-3c9b52e7df70">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;margin-left:3.76%;"&gt;The table below describes the fees and expenses that you may bear for each class of shares if you buy, hold, and sell shares of the &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;Fund. You may pay other fees, such as brokerage commissions and other fees to financial intermediaries, which are not reflected in the table and example below.&lt;/span&gt;</oef:ExpenseNarrativeTextBlock>
    <oef:OperatingExpensesCaption
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      id="x_07643e4b-7bdc-48be-8873-9a85f1c7109b">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-weight:bold;"&gt;Annual Fund operating expenses &lt;/span&gt; &lt;br/&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;(expenses that you bear each year as a percentage of the value of your investment)&lt;/span&gt;</oef:OperatingExpensesCaption>
    <oef:ManagementFeesOverAssets
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      decimals="4"
      id="x_492620d3-a5a6-4180-a3b5-d50731a3dfc8"
      unitRef="pure">0.0040</oef:ManagementFeesOverAssets>
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      contextRef="S000025199_C000075103"
      decimals="5"
      id="efd85f8f-c5b8-456c-be02-639fec36cb89"
      unitRef="pure">0.00305</oef:ManagementFeesOverAssets>
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      contextRef="S000025199_C000075099"
      decimals="4"
      id="x_19d55675-c07e-4645-bbae-93bf94ee0b74"
      unitRef="pure">0.0039</oef:OtherExpensesOverAssets>
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      contextRef="S000025199_C000075103"
      decimals="4"
      id="x_4f79f90d-a6e7-4a63-a429-c6fa9292be75"
      unitRef="pure">0.0039</oef:OtherExpensesOverAssets>
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      contextRef="S000025199_C000075099"
      decimals="4"
      id="e1b72794-722d-4c25-b637-01963b96a273"
      unitRef="pure">0.0001</oef:AcquiredFundFeesAndExpensesOverAssets>
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      contextRef="S000025199_C000075103"
      decimals="4"
      id="x_55b45db7-c153-4d12-bd63-85d4e5caddac"
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      contextRef="S000025199_C000075099"
      decimals="4"
      id="x_2b7e45ac-d48d-4324-bd0c-25595ef63ed2"
      unitRef="pure">0.0080</oef:ExpensesOverAssets>
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      contextRef="S000025199_C000075103"
      decimals="4"
      id="x_34011e3f-1822-45b4-86bc-cb53818bfe09"
      unitRef="pure">0.0071</oef:ExpensesOverAssets>
    <oef:FeeWaiverOrReimbursementOverAssets
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      decimals="4"
      id="f4f63116-4934-4fb4-824d-0e1a6e603b1c"
      unitRef="pure">-0.0032</oef:FeeWaiverOrReimbursementOverAssets>
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      contextRef="S000025199_C000075103"
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      unitRef="pure">-0.0032</oef:FeeWaiverOrReimbursementOverAssets>
    <oef:NetExpensesOverAssets
      contextRef="S000025199_C000075099"
      decimals="4"
      id="e71813d9-cea2-438e-88a3-90265d489960"
      unitRef="pure">0.0048</oef:NetExpensesOverAssets>
    <oef:NetExpensesOverAssets
      contextRef="S000025199_C000075103"
      decimals="4"
      id="x_66fca2c7-2911-4fa4-8757-8f35fd940a1b"
      unitRef="pure">0.0039</oef:NetExpensesOverAssets>
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      contextRef="S000025199"
      id="cafa8e59-75d4-4f04-a486-fb3d6f1f8a0a">&lt;span style="color:#000000;font-family:Times New Roman;font-size:8pt;font-style:italic;"&gt;June 30, 2026&lt;/span&gt;</oef:FeeWaiverOrReimbursementOverAssetsDateOfTermination>
    <oef:ExpenseExampleHeading
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      id="x_1cda26b0-0e7b-42b0-9d75-8120f37fa8dc">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-weight:bold;"&gt;Example&lt;/span&gt;</oef:ExpenseExampleHeading>
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      id="x_95a21026-9210-4c76-b89b-c270202f0c7c">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;margin-left:3.76%;"&gt;This example is intended to help you compare the cost of investing in the Fund with the cost of investing in other funds. The &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;example assumes that you invest $10,000 in the Fund for the time periods indicated, regardless of whether or not you redeem your shares at the end of such periods. The example also assumes that your investment has a 5% return each year and that the Fund&#x2019;s operating expenses remain the same as those shown in the table. The one year amounts shown reflect the expense reimbursement and waiver noted in the expense table. Although your actual costs may be higher or lower, based on these assumptions your costs would be:&lt;/span&gt;</oef:ExpenseExampleNarrativeTextBlock>
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      decimals="INF"
      id="x_4a1edac3-22cf-4d58-a0c3-c2a8e743db6d"
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      contextRef="S000025199_C000075099"
      decimals="INF"
      id="x_777e8990-57ce-4884-9839-a878dfe28a7c"
      unitRef="USD">223</oef:ExpenseExampleYear03>
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      contextRef="S000025199_C000075099"
      decimals="INF"
      id="x_26b676e5-d196-4fea-930c-229489c7e3d2"
      unitRef="USD">413</oef:ExpenseExampleYear05>
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      decimals="INF"
      id="c4c10bee-3d08-4318-9c66-f94a53f5be09"
      unitRef="USD">960</oef:ExpenseExampleYear10>
    <oef:ExpenseExampleYear01
      contextRef="S000025199_C000075103"
      decimals="INF"
      id="x_8321c443-1be4-431f-8d1b-99c0594d3bb9"
      unitRef="USD">40</oef:ExpenseExampleYear01>
    <oef:ExpenseExampleYear03
      contextRef="S000025199_C000075103"
      decimals="INF"
      id="x_7fcc609e-c8b2-459e-95c3-6414b2478487"
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      contextRef="S000025199_C000075103"
      decimals="INF"
      id="x_56db4173-9446-47fd-88b9-c865d6716be5"
      unitRef="USD">363</oef:ExpenseExampleYear05>
    <oef:ExpenseExampleYear10
      contextRef="S000025199_C000075103"
      decimals="INF"
      id="b8562cd8-07c4-40a2-8e1f-1f83b6f9e0d9"
      unitRef="USD">852</oef:ExpenseExampleYear10>
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      id="x_5e100549-420e-4a98-b55f-38fe1da53afa">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-weight:bold;"&gt;Portfolio turnover&lt;/span&gt;</oef:PortfolioTurnoverHeading>
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      contextRef="S000025199"
      id="x_3598c916-bac7-41da-8207-f641be422310">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;margin-left:3.76%;"&gt;The Fund pays transaction costs, such as commissions, when it buys and sells securities. A higher portfolio turnover rate may &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;result in higher transaction costs and, for holders of Fund shares subject to U.S. taxes, higher income taxes. These transaction costs, which are not reflected in Annual Fund operating expenses or in the Example, affect the Fund&#x2019;s performance.&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; During its fiscal year &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;ended February 28, 2025, the Fund&#x2019;s portfolio turnover rate (excluding short-term investments) was &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;84&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;% of the average value of its portfolio securities.&lt;/span&gt;</oef:PortfolioTurnoverTextBlock>
    <oef:PortfolioTurnoverRate
      contextRef="S000025199"
      decimals="4"
      id="x_30623f82-eac9-4022-b43c-d6b28ef8e88e"
      unitRef="pure">0.84</oef:PortfolioTurnoverRate>
    <oef:StrategyHeading
      contextRef="S000025199"
      id="d77f7d37-d99b-461a-a88d-460c9f298f8c">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-weight:bold;"&gt;Principal investment strategies&lt;/span&gt;</oef:StrategyHeading>
    <oef:StrategyNarrativeTextBlock
      contextRef="S000025199"
      id="fd0896cb-5f99-4336-a499-29a0bdea0ba8">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;margin-left:3.76%;"&gt;The investment strategies GMO pursues for the Fund are intended to complement the strategies it is pursuing for GMO Global &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;Asset Allocation Fund and other funds and accounts it manages. Accordingly, the Fund is not intended to serve as a standalone investment.&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;margin-left:3.76%;"&gt;The Fund invests in a portfolio of fixed income instruments of varying maturities, which may be represented by bonds, forward &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;contracts or derivatives such as options, futures contracts, or swap agreements. GMO uses a variety of fundamental and quantitative processes to manage the Fund. GMO evaluates the relative attractiveness of particular markets and instruments using various fixed income risk premium measures, which typically include, among others, term structure, foreign exchange, volatility, credit, and liquidity.&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;margin-left:3.76%;"&gt;Under normal circumstances, the Fund invests directly and indirectly (e.g., through other GMO Funds or derivatives) at least 80% &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;of its assets in bonds (see &#x201c;Name Policies&#x201d;). The term &#x201c;bond&#x201d; includes (i) obligations of an issuer to make payments on future dates of &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;margin-left:0%;"&gt;principal, interest (whether fixed or variable) or both and (ii) synthetic debt instruments created by GMO by investing in derivatives (e.g., a futures contract, swap contract, forward currency contract, or option). The Fund may invest in bonds of any maturity, duration, &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;and credit quality.&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;margin-left:3.76%;"&gt;The Fund may invest in any sector of the bond market and is not required to maintain a minimum or maximum allocation of &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;investments in any one sector. The sectors, types of bonds and other investments to which the Fund may obtain exposure include, but are not limited to:&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:8pt;"&gt;&#x25cf;&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;inflation-indexed bonds issued by the U.S. government (including Inflation-Protected Securities) and non-U.S. governments and their respective agencies or instrumentalities (whether or not guaranteed or insured by those governments) and inflation-indexed bonds issued by corporations;&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:8pt;"&gt;&#x25cf;&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;investment grade bonds denominated in various currencies, including bonds issued by the U.S. and non-U.S. governments and their respective agencies or instrumentalities (whether or not guaranteed or insured by those governments), corporations and municipalities (taxable and tax-exempt);&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:8pt;"&gt;&#x25cf;&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;below investment grade bonds (commonly referred to as &#x201c;high yield&#x201d; or &#x201c;junk bonds&#x201d;);&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:8pt;"&gt;&#x25cf;&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;emerging country sovereign and quasi-sovereign debt;&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:8pt;"&gt;&#x25cf;&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;asset-backed securities, including mortgage related and mortgage-backed securities;&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:8pt;"&gt;&#x25cf;&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;exchange-traded funds (ETFs) as an alternative to direct investments in bonds;&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:8pt;"&gt;&#x25cf;&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;other pooled investment vehicles, including vehicles managed by GMO and vehicles unaffiliated with GMO; and&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:8pt;"&gt;&#x25cf;&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;commodities.&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;margin-left:3.76%;"&gt;From time to time, the Fund may have some direct or indirect exposure to equities. The Fund may invest in securities of &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;companies of any market capitalization.&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;margin-left:3.76%;"&gt;The Fund also may invest in exchange-traded and over-the-counter (OTC) derivatives, including futures contracts, currency &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;options, forward currency contracts, repurchase agreements and reverse repurchase agreements, swap contracts (such as credit default swaps, swaps on securities and securities indices, total return swaps, interest rate swaps, currency swaps, cross currency basis swaps, commodity swaps, inflation swaps, municipal swaps, and other types of swaps), interest rate options, and other types of derivatives. In addition, the Fund may lend its portfolio securities. The Fund is not limited in its use of derivatives or in the total notional value of its derivative positions. The Fund may at times have gross investment exposure in excess of its net assets (i.e., the Fund may be leveraged) and, therefore, may be subject to higher risk of loss during those times than if the Fund were not leveraged. The Fund&#x2019;s performance can depend substantially on the performance of assets or indices underlying its derivatives even though it does not own those assets or indices.&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;margin-left:3.76%;"&gt;The Fund may gain exposure to the investments described above by investing in shares of other GMO Funds, including &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;U.S. Treasury Fund, in money market funds unaffiliated with GMO, and directly in the types of investments typically held by money market funds.&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;The Fund may invest up to 100% of its assets in below investment grade bonds.&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;margin-left:3.76%;"&gt;GMO does not seek to maintain a specified interest rate duration for the Fund, and the Fund&#x2019;s interest rate duration will change &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;depending on the Fund&#x2019;s investments and GMO&#x2019;s assessment of different sectors of the bond market. The Fund&#x2019;s interest rate duration may be positive or negative. The Fund&#x2019;s performance may differ significantly from that of its benchmark.&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;margin-left:3.76%;"&gt;In seeking to achieve the Fund&#x2019;s investment objective, GMO may invest a significant portion of the Fund&#x2019;s net assets in cash and &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;cash equivalents.&lt;/span&gt;</oef:StrategyNarrativeTextBlock>
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      contextRef="S000025199_RiskLoseMoneyMember"
      id="x_23a47226-3048-4aa3-9800-3cadf465da64">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;Many factors can affect this value, and you may lose money by investing in the Fund.&lt;/span&gt;</oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="S000025199_RiskNotInsuredDepositoryInstitutionMember"
      id="b58bf382-89b2-411e-9f8d-e0bb8b360308">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;An investment in the Fund is not a bank deposit and is not insured or guaranteed by the FDIC or &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;any government agency.&lt;/span&gt;</oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="S000025199_MarketRiskFixedIncomeRiskMember"
      id="x_0cc6ca35-f1ce-4b98-9d56-7fda3e754dc9">&lt;span style="color:#000000;font-family:Times New Roman;font-size:8pt;"&gt;&#x25cf;&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-style:italic;"&gt;Market Risk &#x2013; Fixed Income&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; &#x2013; The market price of a fixed income investment can decline due to market-related factors, including rising interest or inflation rates and widening credit spreads, or decreased liquidity due, for example, to market uncertainty about the value of a fixed income investment (or class of fixed income investments).&lt;/span&gt;</oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="S000025199_CreditRiskMember"
      id="x_11ee449f-37a6-4885-ad59-7aa4a326355a">&lt;span style="color:#000000;font-family:Times New Roman;font-size:8pt;"&gt;&#x25cf;&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-style:italic;"&gt;Credit Risk&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; &#x2013; The Fund runs the risk that the issuer or guarantor of a fixed income investment (including a sovereign or quasi-sovereign debt issuer) or the obligor of an obligation underlying an asset-backed security will be unable or unwilling to satisfy its obligation to pay principal and interest or otherwise to honor its obligations in a timely manner or at all. The market price of a fixed income investment will normally decline as a result of the failure of an issuer, guarantor, or obligor to meet its payment obligations or in anticipation of such a failure. Below investment grade investments (commonly referred to as high yield or &#x201c;junk&#x201d; bonds) have speculative characteristics and are subject to greater credit risk than other fixed income investments. Negative changes in economic conditions or other circumstances are more likely to impair the ability of issuers of below investment grade investments to make principal and interest payments than issuers of investment grade investments.&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; Investments in distressed or defaulted or other low &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;quality debt investments generally are considered speculative and are subject to substantial risks not normally associated with investments in higher quality securities, including adverse business, financial or economic conditions that lead to their issuers&#x2019; payment defaults and insolvency proceedings. In particular, distressed or defaulted obligations might be repaid, if at all, only after lengthy workout or bankruptcy proceedings during which the issuer might not make any interest or other payments, and the Fund may incur additional expenses in its effort to be repaid. If GMO&#x2019;s assessment of the eventual recovery value of a distressed or defaulted debt investment proves incorrect, the Fund may lose a substantial portion or all of its original investment or may be required to accept cash or instruments worth less than its original investment.&lt;/span&gt;</oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="S000025199_IlliquidityRiskMember"
      id="x_680cf899-5b0b-470b-ab0c-778da39eb536">&lt;span style="color:#000000;font-family:Times New Roman;font-size:8pt;"&gt;&#x25cf;&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-style:italic;"&gt;Illiquidity Risk&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; &#x2013; Low trading volume, lack of a market maker, large position size, or legal restrictions increase the risk that the Fund or an underlying fund is limited or prevented from selling particular securities or closing derivative positions at desirable prices at a particular time or at all.&lt;/span&gt;</oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="S000025199_LeveragingRiskMember"
      id="ac96ec82-210c-403a-9dc7-731b09a425ec">&lt;span style="color:#000000;font-family:Times New Roman;font-size:8pt;"&gt;&#x25cf;&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-style:italic;"&gt;Leveraging Risk&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; &#x2013; The use of derivatives, short sales and securities lending can create leverage. Leverage increases the Fund&#x2019;s losses when the value of its investments (including derivatives) declines. In addition, the Fund&#x2019;s portfolio will be leveraged if it exercises its right to delay payment on a redemption and the value of the Fund&#x2019;s assets declines between the time a redemption request is treated as being received by the Fund and the time the Fund liquidates assets to fund that redemption.&lt;/span&gt;</oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="S000025199_DerivativesandShortSalesRiskMember"
      id="b47213ef-749a-4026-8b4b-2fa51f4fddcc">&lt;span style="color:#000000;font-family:Times New Roman;font-size:8pt;"&gt;&#x25cf;&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-style:italic;"&gt;Derivatives and Short Sales Risk&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; &#x2013; The use of derivatives involves the risk that their value may not change as expected relative to changes in the value of the underlying assets, pools of assets, rates, currencies or indices. Derivatives also present other risks, including market risk, illiquidity risk, currency risk, credit risk, leveraging risk, commodities risk and counterparty risk. The market price of an option is affected by many factors, including changes in the market prices or dividend rates of underlying securities (or in the case of indices, the securities in such indices); the time remaining before expiration; changes in interest rates or exchange rates; and changes in the actual or perceived volatility of the relevant index or underlying securities. The Fund typically creates short investment exposure by selling securities short or by taking a derivative position in which the value of the derivative moves in the opposite direction from the price of an underlying asset, pool of assets, rate, currency or index. Specifically, the net asset value of the Fund&#x2019;s shares will be adversely affected if the securities or other assets that are the subject of the Fund&#x2019;s short exposures appreciate in value. The risk of loss associated with derivatives that provide short investment exposure and short sales of securities is theoretically unlimited.&lt;/span&gt;</oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="S000025199_CounterpartyRiskMember"
      id="b33bb4d7-1115-4b54-bf39-63bce7cec034">&lt;span style="color:#000000;font-family:Times New Roman;font-size:8pt;"&gt;&#x25cf;&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-style:italic;"&gt;Counterparty Risk&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; &#x2013; The Fund runs the risk that the counterparty to a derivatives contract or a clearing member used by the Fund to hold a cleared derivatives contract is unable or unwilling to make timely settlement payments, return the Fund&#x2019;s collateral or otherwise honor its obligations.&lt;/span&gt;</oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="S000025199_MarketRiskAssetBackedSecuritiesRiskMember"
      id="x_97b9c909-cd48-421a-82a2-5708e526b89d">&lt;span style="color:#000000;font-family:Times New Roman;font-size:8pt;"&gt;&#x25cf;&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-style:italic;"&gt;Market Risk &#x2013; Asset-Backed Securities&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; &#x2013; The market price of asset-backed securities, like that of other fixed income investments, can decline for a variety of reasons, including increases in interest rates. In addition, the market price can decrease due to a reduction in or decrease in the reliability of their payment streams. Payment streams associated with asset-backed securities held by the Fund depend on many factors (e.g., the cash flow generated by the assets backing the securities, deal structure, and creditworthiness of any credit-support provider), and a problem in any of these factors can lead to a reduction in the payment stream GMO expected the Fund to receive when the Fund purchased the asset-backed security. The liquidity of asset-backed securities (particularly below investment grade asset-backed securities) may change over time. During periods of deteriorating economic conditions, such as recessions, or periods of rising unemployment, delinquencies and losses generally increase, sometimes dramatically, for asset-backed securities whose underlying assets consist of loans, sales contracts, receivables and other obligations.&lt;/span&gt;</oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="S000025199_NonUSInvestmentRiskMember"
      id="x_2cb62f83-96db-4a03-aa0b-4873064d86cd">&lt;span style="color:#000000;font-family:Times New Roman;font-size:8pt;"&gt;&#x25cf;&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-style:italic;"&gt;Non-U.S. Investment Risk&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; &#x2013; The market prices of many non-U.S. securities fluctuate more than those of U.S. securities. Many non-U.S. securities markets are less stable, smaller, less liquid, and less regulated than U.S. securities markets, and the cost of trading in those markets often is higher than in U.S. securities markets. In addition, non-U.S. securities issuers often are not subject to as much regulation as U.S. issuers, and the reporting, recordkeeping, accounting, custody, and auditing standards to which those issuers are subject often are not as rigorous as U.S. standards. In addition, the Fund is subject to taxation by countries other than the United States, including potentially on a retroactive basis, on (i) capital gains it realizes or dividends, interest, or other amounts it realizes or accrues in respect of non-U.S. investments; (ii) transactions in those investments; and (iii) repatriation of proceeds generated from the sale or other disposition of those investments.&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; Also, the Fund needs a license to invest directly in securities &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;traded in many non-U.S. securities markets, and the Fund is subject to the risk that its license is terminated or suspended. In some non-U.S. securities markets, prevailing custody and trade settlement practices (e.g., the requirement to pay for securities prior to receipt) expose the Fund to credit and other risks. Further, adverse changes in investment regulations, capital requirements or &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;margin-left:0.00%;"&gt;exchange controls could adversely affect the value of the Fund&#x2019;s investments. The risks above (such as substantial price fluctuations and market instability, illiquidity and lack of regulation) and other risks (e.g., nationalization, expropriation or other confiscation of assets of non-U.S. issuers, difficulties enforcing legal judgments or contractual rights and geopolitical risks) tend to be higher for investments in the securities of issuers tied economically to emerging countries. The economies of emerging countries often depend &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;predominantly on only a few industries or commodities and often are more volatile than the economies of developed countries.&lt;/span&gt;</oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="S000025199_CurrencyRiskMember"
      id="x_2ccfafba-7990-4caa-ad03-42668a8088fa">&lt;span style="color:#000000;font-family:Times New Roman;font-size:8pt;"&gt;&#x25cf;&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-style:italic;"&gt;Currency Risk&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; &#x2013; Fluctuations in exchange rates can adversely affect the market value of the Fund&#x2019;s foreign currency holdings and investments denominated in foreign currencies.&lt;/span&gt;</oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="S000025199_CommoditiesRiskMember"
      id="c47d5ebb-b77a-4c6d-8b42-7c3a77700d66">&lt;span style="color:#000000;font-family:Times New Roman;font-size:8pt;"&gt;&#x25cf;&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-style:italic;"&gt;Commodities Risk&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; &#x2013; Commodity prices can be extremely volatile, and exposure to commodities can cause the net asset value of the Fund&#x2019;s shares to decline or fluctuate significantly.&lt;/span&gt;</oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="S000025199_MarketDisruptionandGeopoliticalRiskMember"
      id="x_41278a2b-b02e-445a-95b9-21a9d7493d24">&lt;span style="color:#000000;font-family:Times New Roman;font-size:8pt;"&gt;&#x25cf;&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-style:italic;"&gt;Market Disruption and Geopolitical Risk&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; &#x2013; Geopolitical and other events (e.g., wars, pandemics, sanctions, terrorism, diplomatic tensions, dramatic changes in regulatory and/or foreign policy, cyberattacks, and rapid technological developments such as artificial intelligence) often disrupt securities markets and adversely affect the general economy or particular economies and markets. Those events, as well as other changes in non-U.S. and U.S. economic and political conditions, could exacerbate other risks or otherwise reduce the value of the Fund&#x2019;s investments.&lt;/span&gt;</oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="S000025199_FocusedInvestmentRiskMember"
      id="x_31dddc3c-28be-4c1b-afb9-0b8f46d6ec9e">&lt;span style="color:#000000;font-family:Times New Roman;font-size:8pt;"&gt;&#x25cf;&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-style:italic;"&gt;Focused Investment Risk&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; &#x2013; Investments in countries, regions, asset classes, sectors, industries, currencies, or issuers that are subject to the same or similar risk factors and investments whose market prices are closely correlated are subject to higher overall risk than investments that are more diversified or whose market prices are not as closely correlated.&lt;/span&gt;</oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="S000025199_ManagementandOperationalRiskMember"
      id="x_9bf1e720-bc40-4484-8a7d-6c0d9735e709">&lt;span style="color:#000000;font-family:Times New Roman;font-size:8pt;"&gt;&#x25cf;&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-style:italic;"&gt;Management and Operational Risk&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; &#x2013; The Fund runs the risk that GMO&#x2019;s investment techniques will fail to produce intended results.&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;GMO uses quantitative models as part of its investment process. GMO&#x2019;s models may not accurately predict future market movements. In addition, GMO&#x2019;s models rely on assumptions and data that are subject to limitations (e.g., inaccuracies, staleness) that could adversely affect their predictive value.&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; The Fund also runs the risk that GMO&#x2019;s assessment of an investment, including a &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;security&#x2019;s fundamental fair (or intrinsic) value, is wrong or that deficiencies in GMO&#x2019;s or another service provider&#x2019;s internal systems or controls will cause losses for the Fund or impair Fund operations.&lt;/span&gt;</oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="S000025199_FundofFundsRiskMember"
      id="x_5b940081-ae1d-4588-8d48-20b8227c3d54">&lt;span style="color:#000000;font-family:Times New Roman;font-size:8pt;"&gt;&#x25cf;&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-style:italic;"&gt;Fund of Funds Risk&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; &#x2013; The Fund is indirectly exposed to all of the risks of an investment in the underlying funds in which it invests, including the risk that those underlying funds will not perform as expected.&lt;/span&gt;</oef:RiskTextBlock>
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      contextRef="S000025199_MarketRiskEquitiesRiskMember"
      id="c9763baf-23e1-4f40-93b8-b78de2e9f5f7">&lt;span style="color:#000000;font-family:Times New Roman;font-size:8pt;"&gt;&#x25cf;&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-style:italic;"&gt;Market Risk &#x2013; Equities &#x2013; &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;The market price of an equity in the Fund&#x2019;s portfolio may decline due to factors affecting the issuer or its industry or the economy and equity markets generally. If the Fund purchases an equity for less than its fundamental fair (or intrinsic) value as assessed by GMO, the Fund runs the risk that the market price of the equity will not appreciate or will decline (for example, if GMO&#x2019;s assessment proves to be incorrect or the market fails to recognize the equity&#x2019;s intrinsic value). The Fund also may purchase equities that typically trade at higher multiples of current earnings than other securities, and the market prices of these equities often are more sensitive to changes in future earnings expectations and interest rates than the market prices of equities trading at lower multiples. Declines in stock market prices generally are likely to reduce the net asset value of the Fund&#x2019;s shares.&lt;/span&gt;</oef:RiskTextBlock>
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      contextRef="S000025199_SmallerCompanyRiskMember"
      id="ca83a2cb-427b-4476-b915-6354aed6642f">&lt;span style="color:#000000;font-family:Times New Roman;font-size:8pt;"&gt;&#x25cf;&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-style:italic;"&gt;Smaller Company Risk&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; &#x2013; Smaller companies may have limited product lines, markets, or financial resources, lack the competitive strength of larger companies, have less experienced managers or depend on a few key employees. The securities of companies with smaller market capitalizations often are less widely held and trade less frequently and in lesser quantities, and their market prices often fluctuate more, than the securities of companies with larger market capitalizations.&lt;/span&gt;</oef:RiskTextBlock>
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      contextRef="S000025199_LargeTransactionsRiskMember"
      id="dd088565-868d-46ec-ac05-ad204e2fe93c">&lt;span style="color:#000000;font-family:Times New Roman;font-size:8pt;"&gt;&#x25cf;&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-style:italic;"&gt;Large Transactions Risk&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; &#x2013; To the extent that a large number of shares of the Fund is held by a single shareholder (e.g., an institutional investor or another GMO Fund) or a group of shareholders with a common investment strategy (e.g., GMO asset allocation accounts), the Fund is subject to the risk that a redemption by (or caused by) that shareholder or group will require the Fund to sell investments at disadvantageous prices, disrupt the Fund&#x2019;s operations, lead to temporary overexposure to the Fund&#x2019;s intended investment program or force the Fund&#x2019;s liquidation. The Fund also may be subject to these effects when a number of shareholders collectively redeem or sell a large amount of Fund shares.&lt;/span&gt;</oef:RiskTextBlock>
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      id="x_9169f372-9c20-4432-adc1-9a375c533fec">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-weight:bold;"&gt;Performance&lt;/span&gt;</oef:BarChartAndPerformanceTableHeading>
    <oef:PerformanceNarrativeTextBlock
      contextRef="S000025199"
      id="x_3d79acf4-88b8-4545-923c-56a4feb06745">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;margin-left:3.76%;"&gt;The bar chart and table below provide some indication of the risks of investing in the Fund by showing changes in the Fund&#x2019;s &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;annual total returns from year to year for the periods indicated and by comparing the Fund&#x2019;s average annual total returns for different calendar periods with those of the Fund's benchmark and a broad-based securities market index.&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; After-tax returns are calculated using &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;the historical highest individual federal marginal income tax rates and do not reflect the impact of state and local taxes.&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; Actual after-tax &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;returns depend on your tax situation and may differ from those shown. After-tax returns shown are not relevant if you are tax-exempt or if you hold your Fund shares through tax-advantaged arrangements (such as a 401(k) plan or individual retirement account). &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;After-tax &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;returns are shown for Class VI shares only; after-tax returns for other classes will vary.&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;&#160;&#160;Updated performance information for the Fund &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;is available at &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;www.gmo.com&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;. &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;Past performance (before and after taxes) is not an indication of future performance.&lt;/span&gt;</oef:PerformanceNarrativeTextBlock>
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      contextRef="S000025199"
      id="f335de4e-1101-4ea2-bc9a-f4ddc5a7f0d4">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;margin-left:3.76%;"&gt;The bar chart and table below provide some indication of the risks of investing in the Fund by showing changes in the Fund&#x2019;s &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;annual total returns from year to year for the periods indicated and by comparing the Fund&#x2019;s average annual total returns for different calendar periods with those of the Fund's benchmark and a broad-based securities market index.&lt;/span&gt;</oef:PerformanceInformationIllustratesVariabilityOfReturns>
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      contextRef="S000025199"
      id="x_18d81790-3c58-4185-a0d0-d91298a59e01">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; After-tax returns are calculated using &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;the historical highest individual federal marginal income tax rates and do not reflect the impact of state and local taxes.&lt;/span&gt;</oef:PerformanceTableUsesHighestFederalRate>
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      id="x_3c793643-421b-4792-a849-b7583e117b96">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; Actual after-tax &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;returns depend on your tax situation and may differ from those shown. After-tax returns shown are not relevant if you are tax-exempt or if you hold your Fund shares through tax-advantaged arrangements (such as a 401(k) plan or individual retirement account). &lt;/span&gt;</oef:PerformanceTableNotRelevantToTaxDeferred>
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      id="x_7474d445-c4c5-4ecf-9767-c1c9168a9d2a">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;After-tax &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;returns are shown for Class VI shares only; after-tax returns for other classes will vary.&lt;/span&gt;</oef:PerformanceTableOneClassOfAfterTaxShown>
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      contextRef="S000025199"
      id="e9764da0-33af-48b2-be9c-0bef03bf9315">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;www.gmo.com&lt;/span&gt;</oef:PerformanceAvailabilityWebSiteAddress>
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      contextRef="S000025199"
      id="x_05caf21a-d379-46af-be83-a27c5c04a274">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;Past performance (before and after taxes) is not an indication of future performance.&lt;/span&gt;</oef:PerformancePastDoesNotIndicateFuture>
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      id="f10d532b-eef5-483f-9499-fa5eb1a124d8">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-weight:bold;"&gt;Annual Total Returns/Class VI Shares&lt;/span&gt; &lt;br/&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;Years Ending December 31&lt;/span&gt;</oef:BarChartHeading>
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      id="x_1ae21407-cfe1-4d2d-8ed1-8c5a3fcc2e8f">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;Highest Quarter:&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;16.28%&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;-sec-ix-hidden:x_1220393e-6d5f-46fe-ad89-e95d99cebfae"&gt;4Q 2023&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;Lowest Quarter:&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;-12.94%&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;-sec-ix-hidden:c15688cc-5b7d-4789-9fc4-20b34891dcf2"&gt;4Q 2024&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;Year-to-Date:&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;6.58%&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;As of&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;3/31/2025&lt;/span&gt;</oef:BarChartClosingTextBlock>
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      id="eb6c46c3-d12f-4be7-9a6e-c75d3873502d">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;Highest Quarter:&lt;/span&gt;</oef:HighestQuarterlyReturnLabel>
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      unitRef="pure">0.1628</oef:BarChartHighestQuarterlyReturn>
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      id="b93e2b63-4302-4353-ae02-eb629fc92eda">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;Lowest Quarter:&lt;/span&gt;</oef:LowestQuarterlyReturnLabel>
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      decimals="4"
      id="acdf4a04-b0e0-45a1-9bed-496d59c58d66"
      unitRef="pure">-0.1294</oef:BarChartLowestQuarterlyReturn>
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      id="a52b4353-e69d-4ba9-81b5-668227fc47d8">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;Year-to-Date:&lt;/span&gt;</oef:YearToDateReturnLabel>
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      contextRef="S000025199_C000075103"
      decimals="4"
      id="a01b452b-588b-403b-8f4d-5007496206d1"
      unitRef="pure">0.0658</oef:BarChartYearToDateReturn>
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      contextRef="S000025199_C000075103"
      id="a79f3f68-9920-4d1c-9a11-d188c72a2ab7">2025-03-31</oef:BarChartYearToDateReturnDate>
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      id="x_1cc9f5ed-e111-4f65-97e3-709dd249d128">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-weight:bold;"&gt;Average Annual Total Returns&lt;/span&gt; &lt;br/&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;Periods Ending December 31, 2024&lt;/span&gt;</oef:PerformanceTableHeading>
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      id="x_901d77f8-3d9e-4ae5-827f-a16e869a0910">2009-03-18</oef:PerfInceptionDate>
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      decimals="4"
      id="e67d2de4-c124-42af-9d39-6db6eeafa1e7"
      unitRef="pure">-0.1173</oef:AvgAnnlRtrPct>
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      decimals="4"
      id="x_4e046600-72c8-40a4-bdf9-fef6c0c79576"
      unitRef="pure">-0.0169</oef:AvgAnnlRtrPct>
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      decimals="4"
      id="x_92987473-7c9f-4512-bffc-ae726e7482b2"
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      id="x_2134b8f0-a3c1-4837-a262-3b7f7e44e6d4"
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      unitRef="pure">-0.1348</oef:AvgAnnlRtrPct>
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      decimals="4"
      id="a9422c8a-2271-4f29-8b6d-8a8cbf0128dd"
      unitRef="pure">-0.0278</oef:AvgAnnlRtrPct>
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    <oef:AvgAnnlRtrPct
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    <oef:AvgAnnlRtrPct
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      decimals="4"
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    <oef:AvgAnnlRtrPct
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    <oef:ObjectiveHeading
      contextRef="S000033464"
      id="x_484bd2b6-0f04-47be-839b-4abe47c815d8">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-weight:bold;"&gt;Investment objective&lt;/span&gt;</oef:ObjectiveHeading>
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      id="e62da06a-dd33-4dd3-b342-195de8ebba98">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;Positive total return.&lt;/span&gt;</oef:ObjectivePrimaryTextBlock>
    <oef:ExpenseHeading
      contextRef="S000033464"
      id="e5660ebb-76c8-499b-856c-9e454bff5695">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-weight:bold;"&gt;Fees and expenses&lt;/span&gt;</oef:ExpenseHeading>
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      contextRef="S000033464"
      id="d36c1baf-e7ca-44f6-9dd6-8e51d7f7bf3c">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;margin-left:3.76%;"&gt;The table below describes the fees and expenses that you may bear if you buy, hold, and sell shares of the Fund. You may pay &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;other fees, such as brokerage commissions and other fees to financial intermediaries, which are not reflected in the table and example below.&lt;/span&gt;</oef:ExpenseNarrativeTextBlock>
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      id="x_3c829047-bd47-43dd-8e62-61fce81b104d">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-weight:bold;"&gt;Annual Fund operating expenses &lt;/span&gt; &lt;br/&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;(expenses that you bear each year as a percentage of the value of your investment)&lt;/span&gt;</oef:OperatingExpensesCaption>
    <oef:ManagementFeesOverAssets
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      decimals="4"
      id="x_9dc40289-11cb-4fda-9be5-dcb14d93229e"
      unitRef="pure">0.0000</oef:ManagementFeesOverAssets>
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      contextRef="S000033464_C000102896"
      decimals="4"
      id="cd0589a8-d9a5-40a4-8490-5d330b60791c"
      unitRef="pure">0.0052</oef:OtherExpensesOverAssets>
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      decimals="4"
      id="a504b3bf-1ea6-4130-9416-335678ccff99"
      unitRef="pure">0.0041</oef:Component1OtherExpensesOverAssets>
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      contextRef="S000033464_C000102896"
      decimals="4"
      id="x_60ebeb72-97a5-4ba8-b50a-04387ca09149"
      unitRef="pure">0.0011</oef:Component3OtherExpensesOverAssets>
    <oef:AcquiredFundFeesAndExpensesOverAssets
      contextRef="S000033464_C000102896"
      decimals="4"
      id="x_342a27c0-ee98-448a-b20c-821eead397b4"
      unitRef="pure">0.0011</oef:AcquiredFundFeesAndExpensesOverAssets>
    <oef:ExpensesOverAssets
      contextRef="S000033464_C000102896"
      decimals="4"
      id="x_0080fcfc-579b-4526-9ae2-1e452f245c5b"
      unitRef="pure">0.0063</oef:ExpensesOverAssets>
    <oef:FeeWaiverOrReimbursementOverAssets
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      decimals="4"
      id="cf3375b4-c1cf-487b-ba37-56f2ccec3171"
      unitRef="pure">-0.0007</oef:FeeWaiverOrReimbursementOverAssets>
    <oef:NetExpensesOverAssets
      contextRef="S000033464_C000102896"
      decimals="4"
      id="x_97874225-e47a-4a75-b8bb-b6fc7617f9f4"
      unitRef="pure">0.0056</oef:NetExpensesOverAssets>
    <oef:FeeWaiverOrReimbursementOverAssetsDateOfTermination
      contextRef="S000033464"
      id="x_46c9acb6-e51c-4909-9036-1b0f07e4c427">&lt;span style="color:#000000;font-family:Times New Roman;font-size:8pt;font-style:italic;"&gt;June 30, 2026&lt;/span&gt;</oef:FeeWaiverOrReimbursementOverAssetsDateOfTermination>
    <oef:ExpenseExampleHeading
      contextRef="S000033464"
      id="x_693173d3-138b-43bc-9a05-e35f486bdb03">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-weight:bold;"&gt;Example&lt;/span&gt;</oef:ExpenseExampleHeading>
    <oef:ExpenseExampleNarrativeTextBlock
      contextRef="S000033464"
      id="x_0fd26b34-6c12-4cb6-8752-405a25df08d1">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;margin-left:3.76%;"&gt;This example is intended to help you compare the cost of investing in the Fund with the cost of investing in other mutual funds. &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;The example assumes that you invest $10,000 in the Fund for the time periods indicated, regardless of whether or not you redeem your shares at the end of such periods. The example also assumes that your investment has a 5% return each year and that the Fund&#x2019;s operating expenses remain the same as those shown in the table. The one year amount shown reflects the expense reimbursement noted in the expense table. Although your actual costs may be higher or lower, based on these assumptions your costs would be:&lt;/span&gt;</oef:ExpenseExampleNarrativeTextBlock>
    <oef:ExpenseExampleYear01
      contextRef="S000033464_C000102896"
      decimals="INF"
      id="x_99471cc6-b040-4478-9db8-6e65915da29a"
      unitRef="USD">57</oef:ExpenseExampleYear01>
    <oef:ExpenseExampleYear03
      contextRef="S000033464_C000102896"
      decimals="INF"
      id="x_7c78885d-65aa-4151-a099-9415d5dc8cf2"
      unitRef="USD">195</oef:ExpenseExampleYear03>
    <oef:ExpenseExampleYear05
      contextRef="S000033464_C000102896"
      decimals="INF"
      id="x_9753a1fb-5157-4794-b671-d132b4a51011"
      unitRef="USD">344</oef:ExpenseExampleYear05>
    <oef:ExpenseExampleYear10
      contextRef="S000033464_C000102896"
      decimals="INF"
      id="ab5d6348-f393-4f76-8bb2-3454270a9c2c"
      unitRef="USD">780</oef:ExpenseExampleYear10>
    <oef:PortfolioTurnoverHeading
      contextRef="S000033464"
      id="f878c596-d45e-4116-a5ef-c52f3075521b">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-weight:bold;"&gt;Portfolio turnover&lt;/span&gt;</oef:PortfolioTurnoverHeading>
    <oef:PortfolioTurnoverTextBlock
      contextRef="S000033464"
      id="x_2761210d-081e-474a-a4f0-7734b68b31db">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;margin-left:3.76%;"&gt;The Fund pays transaction costs, such as commissions, when it buys and sells securities. A higher portfolio turnover rate may &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;result in higher transaction costs and, for holders of Fund shares subject to U.S. taxes, higher income taxes. These transaction costs, which are not reflected in Annual Fund operating expenses or in the Example, affect the Fund&#x2019;s performance.&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; During its fiscal year &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;ended February 28, 2025, the Fund&#x2019;s portfolio turnover rate (excluding short-term investments) was &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;126&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;% of the average value of its portfolio securities.&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; That portfolio turnover rate includes investments in U.S. Treasury Fund, which the Fund uses as a short-term &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;investment vehicle for cash management. The Fund&#x2019;s portfolio turnover rate during its fiscal year ended February 28, 2025, excluding transactions in U.S. Treasury Fund and other short-term investments, was 111% of the average value of its portfolio securities.&lt;/span&gt;</oef:PortfolioTurnoverTextBlock>
    <oef:PortfolioTurnoverRate
      contextRef="S000033464"
      decimals="4"
      id="dbeee0ef-caeb-4531-b183-a622d48a92e5"
      unitRef="pure">1.26</oef:PortfolioTurnoverRate>
    <oef:StrategyHeading
      contextRef="S000033464"
      id="x_1ff41eb0-1d87-47c1-84dc-5fa0701e8089">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-weight:bold;"&gt;Principal investment strategies&lt;/span&gt;</oef:StrategyHeading>
    <oef:StrategyNarrativeTextBlock
      contextRef="S000033464"
      id="af6c205b-5387-498a-bd5e-7f4f38bf3a5f">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;margin-left:3.76%;"&gt;The investment strategies GMO pursues for the Fund are intended to complement the strategies it is pursuing for the other &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;accounts it manages. Accordingly, the Fund is not intended to serve as a standalone investment.&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;margin-left:3.76%;"&gt;The Fund invests its assets in direct investments, shares of other series of GMO Trust whether now existing or created in the &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;future, including the Equity Funds, the Fixed Income Funds, the Implementation Funds, and the Alternative Funds, and shares of GMO-managed exchange-traded funds (collectively, the &#x201c;underlying GMO Funds&#x201d;) (see &#x201c;Additional Information About the Funds&#x2019; Investment Strategies, Risks, and Expenses &#x2014; Asset Allocation Funds&#x201d;). &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;margin-left:3.76%;"&gt;GMO seeks to achieve the Fund&#x2019;s investment objective by investing the Fund&#x2019;s assets in asset classes GMO believes offer the most &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;attractive risk-adjusted returns. GMO uses its quantitative multi-year forecasts of returns among asset classes, together with its assessment of the relative risks of asset classes, to determine the asset classes in which the Fund invests and how much the Fund invests in each asset class. An important component of those forecasts is GMO&#x2019;s expectation that valuations ultimately revert to their fundamental fair (or intrinsic) value over a complete market cycle. GMO changes the Fund&#x2019;s asset class exposures in response to changes in GMO&#x2019;s investment outlook and its assessment of market valuations and may use redemptions or purchases of Fund shares to rebalance the Fund&#x2019;s investments. The factors GMO considers and investment methods GMO uses can change over time.&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;margin-left:3.76%;"&gt;GMO does not manage the Fund to, or control the Fund&#x2019;s risk relative to, any securities index or securities benchmark. The Fund &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;is permitted to invest in any asset class (e.g., U.S., non-U.S., and emerging market equity; U.S., non-U.S., and emerging market debt (including asset-backed securities and municipal bonds); and commodities), strategy (e.g., long/short and event-driven strategies), sector, country, or region, and at times may have substantial exposure to a single asset class, sector, country, region, issuer, or currency and companies with similar market capitalizations. In addition, the Fund is not restricted in its exposure to any particular market and may invest in securities of companies of any market capitalization and, in the case of debt instruments, of any credit quality (including below investment grade securities, commonly referred to as &#x201c;high yield&#x201d; or &#x201c;junk bonds&#x201d;), maturity and duration. GMO&#x2019;s ability to shift investments among asset classes is not subject to any limits.&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;margin-left:3.76%;"&gt;The Fund typically has substantial exposure to derivatives and short-sales. Leverage is not a principal component of the Fund&#x2019;s &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;investment strategy. However, because of its derivative exposure, the Fund may at times have gross investment exposure in excess of its net assets (i.e., the Fund may be leveraged) and, therefore, may be subject to higher risk of loss during those times than if the Fund were not leveraged.&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;margin-left:3.76%;"&gt;In seeking to achieve the Fund&#x2019;s investment objective, GMO may invest a significant portion of the Fund&#x2019;s net assets in cash and &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;cash equivalents. In addition, the Fund may lend its portfolio securities.&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;margin-left:3.76%;"&gt;The Fund also may invest in U.S. Treasury Fund, in money market funds unaffiliated with GMO, and directly in the types of &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;investments typically held by money market funds.&lt;/span&gt;</oef:StrategyNarrativeTextBlock>
    <oef:RiskTextBlock
      contextRef="S000033464_RiskLoseMoneyMember"
      id="x_5c3eb25f-bb2b-4cd8-96f4-90e87b32f721">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;Many factors can affect this value, and you may lose money by investing in the Fund.&lt;/span&gt;</oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="S000033464_RiskNotInsuredDepositoryInstitutionMember"
      id="x_7d116ff5-6d6c-4b9d-a9a6-532e45d06798">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;An investment in the Fund is not a bank deposit and is not insured or guaranteed by the FDIC or &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;any government agency.&lt;/span&gt;</oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="S000033464_ManagementandOperationalRiskMember"
      id="x_749afe1e-fedf-4fff-a9e7-3d880b388bfd">&lt;span style="color:#000000;font-family:Times New Roman;font-size:8pt;"&gt;&#x25cf;&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-style:italic;"&gt;Management and Operational Risk&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; &#x2013; The Fund runs the risk that GMO&#x2019;s investment techniques will fail to produce intended results.&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;GMO uses quantitative models as part of its investment process. GMO&#x2019;s models may not accurately predict future market movements. In addition, GMO&#x2019;s models rely on assumptions and data that are subject to limitations (e.g., inaccuracies, staleness) that could adversely affect their predictive value.&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; The Fund also runs the risk that GMO&#x2019;s assessment of an investment, including a &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;security&#x2019;s fundamental fair (or intrinsic) value, is wrong or that deficiencies in GMO&#x2019;s or another service provider&#x2019;s internal systems or controls will cause losses for the Fund or impair Fund operations.&lt;/span&gt;</oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="S000033464_MarketRiskEquitiesRiskMember"
      id="df7a220c-5c37-4e7d-963a-0ef0f3490d7f">&lt;span style="color:#000000;font-family:Times New Roman;font-size:8pt;"&gt;&#x25cf;&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-style:italic;"&gt;Market Risk &#x2013; Equities &#x2013; &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;The market price of an equity in the Fund&#x2019;s portfolio may decline due to factors affecting the issuer or its industry or the economy and equity markets generally. If the Fund purchases an equity for less than its fundamental fair (or intrinsic) value as assessed by GMO, the Fund runs the risk that the market price of the equity will not appreciate or will decline (for example, if GMO&#x2019;s assessment proves to be incorrect or the market fails to recognize the equity&#x2019;s intrinsic value). The Fund also may purchase equities that typically trade at higher multiples of current earnings than other securities, and the market prices of these equities often are more sensitive to changes in future earnings expectations and interest rates than the market prices of equities trading at lower multiples. Declines in stock market prices generally are likely to reduce the net asset value of the Fund&#x2019;s shares.&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;When the Fund writes put options on a stock index, the value of those options will decline when the value of that index declines. The value of an index depends on the value of the equity securities in the index. Also, the Fund&#x2019;s investment strategy of writing put options on stock indices can be expected to cause that strategy to underperform relative to those indices when the value of those indices rises sharply.&lt;/span&gt;</oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="S000033464_NonUSInvestmentRiskMember"
      id="b3a6b8dd-422a-4f14-aa76-0f995fa0c206">&lt;span style="color:#000000;font-family:Times New Roman;font-size:8pt;"&gt;&#x25cf;&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-style:italic;"&gt;Non-U.S. Investment Risk&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; &#x2013; The market prices of many non-U.S. securities fluctuate more than those of U.S. securities. Many non-U.S. securities markets are less stable, smaller, less liquid, and less regulated than U.S. securities markets, and the cost of trading in those markets often is higher than in U.S. securities markets. In addition, non-U.S. securities issuers often are not subject to as much regulation as U.S. issuers, and the reporting, recordkeeping, accounting, custody, and auditing standards to which those issuers are subject often are not as rigorous as U.S. standards. In addition, the Fund is subject to taxation by countries other than the United States, including potentially on a retroactive basis, on (i) capital gains it realizes or dividends, interest, or other amounts it realizes or accrues in respect of non-U.S. investments; (ii) transactions in those investments; and (iii) repatriation of proceeds generated from the sale or other disposition of those investments.&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; Also, the Fund needs a license to invest directly in securities &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;traded in many non-U.S. securities markets, and the Fund is subject to the risk that its license is terminated or suspended. In some non-U.S. securities markets, prevailing custody and trade settlement practices (e.g., the requirement to pay for securities prior to receipt) expose the Fund to credit and other risks. Further, adverse changes in investment regulations, capital requirements or exchange controls could adversely affect the value of the Fund&#x2019;s investments. The risks above (such as substantial price fluctuations and market instability, illiquidity and lack of regulation) and other risks (e.g., nationalization, expropriation or other confiscation of assets of non-U.S. issuers, difficulties enforcing legal judgments or contractual rights and geopolitical risks) tend to be higher for investments in the securities of issuers tied economically to emerging countries. The economies of emerging countries often depend predominantly on only a few industries or commodities and often are more volatile than the economies of developed countries.&lt;/span&gt;</oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="S000033464_MarketRiskFixedIncomeRiskMember"
      id="x_02ad3006-671a-429b-9078-864e667d901e">&lt;span style="color:#000000;font-family:Times New Roman;font-size:8pt;"&gt;&#x25cf;&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-style:italic;"&gt;Market Risk &#x2013; Fixed Income&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; &#x2013; The market price of a fixed income investment can decline due to market-related factors, including rising interest or inflation rates and widening credit spreads, or decreased liquidity due, for example, to market uncertainty about the value of a fixed income investment (or class of fixed income investments).&lt;/span&gt;</oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="S000033464_DerivativesandShortSalesRiskMember"
      id="e590b244-3176-4f4c-a08b-87aa4033488b">&lt;span style="color:#000000;font-family:Times New Roman;font-size:8pt;"&gt;&#x25cf;&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-style:italic;"&gt;Derivatives and Short Sales Risk&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; &#x2013; The use of derivatives involves the risk that their value may not change as expected relative to changes in the value of the underlying assets, pools of assets, rates, currencies or indices. Derivatives also present other risks, including market risk, illiquidity risk, currency risk, credit risk, leveraging risk, commodities risk and counterparty risk. The market price of an option is affected by many factors, including changes in the market prices or dividend rates of underlying securities (or in the case of indices, the securities in such indices); the time remaining before expiration; changes in interest rates or exchange rates; and changes in the actual or perceived volatility of the relevant index or underlying securities. The Fund typically creates short investment exposure by selling securities short or by taking a derivative position in which the value of the derivative moves in the opposite direction from the price of an underlying asset, pool of assets, rate, currency or index. Specifically, the net asset value of the Fund&#x2019;s shares will be adversely affected if the securities or other assets that are the subject of the Fund&#x2019;s short exposures appreciate in value. The risk of loss associated with derivatives that provide short investment exposure and short sales of securities is theoretically unlimited.&lt;/span&gt;</oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="S000033464_FuturesContractsRiskMember"
      id="aded8720-a78b-4fa2-b0c5-659efdefc8ff">&lt;span style="color:#000000;font-family:Times New Roman;font-size:8pt;"&gt;&#x25cf;&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-style:italic;"&gt;Futures Contracts Risk&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; &#x2013; The loss to the Fund resulting from its use of futures contracts is potentially unlimited. Futures markets are highly volatile, and the use of futures contracts increases the volatility of the Fund&#x2019;s net asset value. A liquid market may not exist for any particular futures contract at any particular time, and the Fund may be unable when it wishes to terminate its exposure under that contract. When the Fund uses futures contracts for hedging purposes, it runs the risk that changes in the prices of the contracts will not correlate perfectly with changes in the securities, index, or other asset underlying the contracts or movements in the prices of the Fund&#x2019;s investments that are subject to the hedge. In addition, the Fund may be unable to recover or may be delayed in recovering margin or other amounts deposited with a futures commission merchant or futures clearinghouse. Foreign futures contracts are often less liquid and more volatile than U.S. futures contracts.&lt;/span&gt;</oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="S000033464_CreditRiskMember"
      id="c1b117b3-1301-49c6-bb22-fd36e707f1c7">&lt;span style="color:#000000;font-family:Times New Roman;font-size:8pt;"&gt;&#x25cf;&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-style:italic;"&gt;Credit Risk&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; &#x2013; The Fund runs the risk that the issuer or guarantor of a fixed income investment (including a sovereign or quasi-sovereign debt issuer) or the obligor of an obligation underlying an asset-backed security will be unable or unwilling to satisfy its obligation to pay principal and interest or otherwise to honor its obligations in a timely manner or at all. The market price of a fixed income investment will normally decline as a result of the failure of an issuer, guarantor, or obligor to meet its payment obligations or in anticipation of such a failure. Below investment grade investments (commonly referred to as high yield or &#x201c;junk&#x201d; bonds) have speculative characteristics and are subject to greater credit risk than other fixed income investments. Negative changes in economic conditions or other circumstances are more likely to impair the ability of issuers of below investment grade investments to make principal and interest payments than issuers of investment grade investments.&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; In addition, investments in emerging country sovereign &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;or quasi-sovereign debt are subject to a heightened risk that the issuer responsible for repayment of the debt may be unable or unwilling to pay interest and repay principal when due, and the Fund may lack recourse against the issuer in the event of a default. Investments in quasi-sovereign debt also are subject to the risk that the issuer will default independently of its sovereign.&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;Investments in distressed or defaulted or other low quality debt investments generally are considered speculative and are subject to substantial risks not normally associated with investments in higher quality securities, including adverse business, financial or economic conditions that lead to their issuers&#x2019; payment defaults and insolvency proceedings. In particular, distressed or defaulted obligations might be repaid, if at all, only after lengthy workout or bankruptcy proceedings during which the issuer might not make any interest or other payments, and the Fund may incur additional expenses in its effort to be repaid. If GMO&#x2019;s assessment of the eventual recovery value of a distressed or defaulted debt investment proves incorrect, the Fund may lose a substantial portion or all of its original investment or may be required to accept cash or instruments worth less than its original investment.&lt;/span&gt;</oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="S000033464_CurrencyRiskMember"
      id="x_06a2220d-5542-41f7-81f0-877064243190">&lt;span style="color:#000000;font-family:Times New Roman;font-size:8pt;"&gt;&#x25cf;&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-style:italic;"&gt;Currency Risk&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; &#x2013; Fluctuations in exchange rates can adversely affect the market value of the Fund&#x2019;s foreign currency holdings and investments denominated in foreign currencies.&lt;/span&gt;</oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="S000033464_FundofFundsRiskMember"
      id="a0ff016d-5fd3-4b47-80d9-f07a924bc02d">&lt;span style="color:#000000;font-family:Times New Roman;font-size:8pt;"&gt;&#x25cf;&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-style:italic;"&gt;Fund of Funds Risk&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; &#x2013; The Fund is indirectly exposed to all of the risks of an investment in the underlying funds in which it invests, including the risk that those underlying funds will not perform as expected. The fees and expenses associated with an investment in the Fund are less predictable than those associated with an investment in funds that charge a fixed management fee.&lt;/span&gt;</oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="S000033464_CommoditiesRiskMember"
      id="x_79e0e6d2-1ec7-41b7-8663-caaed9ea6815">&lt;span style="color:#000000;font-family:Times New Roman;font-size:8pt;"&gt;&#x25cf;&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-style:italic;"&gt;Commodities Risk&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; &#x2013; Commodity prices can be extremely volatile, and exposure to commodities can cause the net asset value of the Fund&#x2019;s shares to decline or fluctuate significantly.&lt;/span&gt;</oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="S000033464_IlliquidityRiskMember"
      id="x_406d77fb-bd33-4700-984e-67e2367dd3df">&lt;span style="color:#000000;font-family:Times New Roman;font-size:8pt;"&gt;&#x25cf;&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-style:italic;"&gt;Illiquidity Risk&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; &#x2013; Low trading volume, lack of a market maker, large position size, or legal restrictions increase the risk that the Fund or an underlying fund is limited or prevented from selling particular securities or closing derivative positions at desirable prices at a particular time or at all.&lt;/span&gt;</oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="S000033464_LeveragingRiskMember"
      id="x_386ccfc4-c857-4d87-b34f-0f717094a543">&lt;span style="color:#000000;font-family:Times New Roman;font-size:8pt;"&gt;&#x25cf;&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-style:italic;"&gt;Leveraging Risk&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; &#x2013; The use of derivatives, short sales and securities lending can create leverage. Leverage increases the Fund&#x2019;s losses when the value of its investments (including derivatives) declines. In addition, the Fund&#x2019;s portfolio will be leveraged if it exercises its right to delay payment on a redemption and the value of the Fund&#x2019;s assets declines between the time a redemption request is treated as being received by the Fund and the time the Fund liquidates assets to fund that redemption.&lt;/span&gt;</oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="S000033464_CounterpartyRiskMember"
      id="x_019f9176-38a2-4b22-abe2-7656ce7c950a">&lt;span style="color:#000000;font-family:Times New Roman;font-size:8pt;"&gt;&#x25cf;&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-style:italic;"&gt;Counterparty Risk&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; &#x2013; The Fund runs the risk that the counterparty to a derivatives contract or a clearing member used by the Fund to hold a cleared derivatives contract is unable or unwilling to make timely settlement payments, return the Fund&#x2019;s collateral or otherwise honor its obligations.&lt;/span&gt;</oef:RiskTextBlock>
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      id="d71d5e14-62b9-4647-a1cd-d623529745fe">&lt;span style="color:#000000;font-family:Times New Roman;font-size:8pt;"&gt;&#x25cf;&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-style:italic;"&gt;Smaller Company Risk&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; &#x2013; Smaller companies may have limited product lines, markets, or financial resources, lack the competitive strength of larger companies, have less experienced managers or depend on a few key employees. The securities of companies with smaller market capitalizations often are less widely held and trade less frequently and in lesser quantities, and their market prices often fluctuate more, than the securities of companies with larger market capitalizations.&lt;/span&gt;</oef:RiskTextBlock>
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      contextRef="S000033464_MarketDisruptionandGeopoliticalRiskMember"
      id="x_456b0168-df73-4e77-8719-ce2561859417">&lt;span style="color:#000000;font-family:Times New Roman;font-size:8pt;"&gt;&#x25cf;&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-style:italic;"&gt;Market Disruption and Geopolitical Risk&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; &#x2013; Geopolitical and other events (e.g., wars, pandemics, sanctions, terrorism, diplomatic tensions, dramatic changes in regulatory and/or foreign policy, cyberattacks, and rapid technological developments such as artificial intelligence) often disrupt securities markets and adversely affect the general economy or particular economies and markets. Those events, as well as other changes in non-U.S. and U.S. economic and political conditions, could exacerbate other risks or otherwise reduce the value of the Fund&#x2019;s investments.&lt;/span&gt;</oef:RiskTextBlock>
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      contextRef="S000033464_MarketRiskAssetBackedSecuritiesRiskMember"
      id="x_58c65d6f-cad6-4355-96a3-49134daf6391">&lt;span style="color:#000000;font-family:Times New Roman;font-size:8pt;"&gt;&#x25cf;&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-style:italic;"&gt;Market Risk &#x2013; Asset-Backed Securities&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; &#x2013; The market price of asset-backed securities, like that of other fixed income investments, can decline for a variety of reasons, including increases in interest rates. In addition, the market price can decrease due to a reduction in or decrease in the reliability of their payment streams. Payment streams associated with asset-backed securities held by the Fund depend on many factors (e.g., the cash flow generated by the assets backing the securities, deal structure, and creditworthiness of any credit-support provider), and a problem in any of these factors can lead to a reduction in the payment stream GMO expected the Fund to receive when the Fund purchased the asset-backed security. The liquidity of asset-backed securities (particularly below investment grade asset-backed securities) may change over time. During periods of deteriorating economic conditions, such as recessions, or periods of rising unemployment, delinquencies and losses generally increase, sometimes dramatically, for asset-backed securities whose underlying assets consist of loans, sales contracts, receivables and other obligations.&lt;/span&gt;</oef:RiskTextBlock>
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      id="x_8179bb0d-4505-4f0b-a580-3ba765ee57ea">&lt;span style="color:#000000;font-family:Times New Roman;font-size:8pt;"&gt;&#x25cf;&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-style:italic;"&gt;Focused Investment Risk&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; &#x2013; Investments in countries, regions, asset classes, sectors, industries, currencies, or issuers that are subject to the same or similar risk factors and investments whose market prices are closely correlated are subject to higher overall risk than investments that are more diversified or whose market prices are not as closely correlated.&lt;/span&gt;</oef:RiskTextBlock>
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      contextRef="S000033464_LargeTransactionsRiskMember"
      id="x_5d33caec-2791-4e4f-8047-a7f1ab349a12">&lt;span style="color:#000000;font-family:Times New Roman;font-size:8pt;"&gt;&#x25cf;&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-style:italic;"&gt;Large Transactions Risk&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; &#x2013; To the extent that a large number of shares of the Fund is held by a single shareholder (e.g., an institutional investor or another GMO Fund) or a group of shareholders with a common investment strategy (e.g., GMO asset allocation accounts), the Fund is subject to the risk that a redemption by (or caused by) that shareholder or group will require the Fund to sell investments at disadvantageous prices, disrupt the Fund&#x2019;s operations, lead to temporary overexposure to the Fund&#x2019;s intended investment program or force the Fund&#x2019;s liquidation. The Fund also may be subject to these effects when a number of shareholders collectively redeem or sell a large amount of Fund shares.&lt;/span&gt;</oef:RiskTextBlock>
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      id="x_83853d28-31b9-454c-bb5e-1becdff0795d">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-weight:bold;"&gt;Performance&lt;/span&gt;</oef:BarChartAndPerformanceTableHeading>
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      id="x_23d1895a-a4fa-495f-b499-ace6a9bd43e5">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;margin-left:3.76%;"&gt;The bar chart and table below provide some indication of the risks of investing in the Fund by showing changes in the Fund&#x2019;s &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;annual total returns from year to year for the periods indicated and by comparing the Fund&#x2019;s average annual total returns for different calendar periods with those of the Consumer Price Index, the Bloomberg U.S. Treasury Inflation Notes: 1-10 Year Index, and two broad-based securities market indices.&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; After-tax returns are calculated using the historical highest individual federal marginal income tax &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;rates and do not reflect the impact of state and local taxes.&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; Actual after-tax returns depend on your tax situation and may differ from &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;those shown. After-tax returns shown are not relevant if you are tax-exempt or if you hold your Fund shares through tax-advantaged arrangements (such as a 401(k) plan or individual retirement account).&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; Past performance (before and after taxes) is not an indication of &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;future performance.&lt;/span&gt;</oef:PerformanceNarrativeTextBlock>
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      id="x_05ef57d9-9e52-4a79-a298-2314aa8968a8">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;margin-left:3.76%;"&gt;The bar chart and table below provide some indication of the risks of investing in the Fund by showing changes in the Fund&#x2019;s &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;annual total returns from year to year for the periods indicated and by comparing the Fund&#x2019;s average annual total returns for different calendar periods with those of the Consumer Price Index, the Bloomberg U.S. Treasury Inflation Notes: 1-10 Year Index, and two broad-based securities market indices.&lt;/span&gt;</oef:PerformanceInformationIllustratesVariabilityOfReturns>
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      id="b48ec159-863a-4f40-89dd-01b211a3c406">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; After-tax returns are calculated using the historical highest individual federal marginal income tax &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;rates and do not reflect the impact of state and local taxes.&lt;/span&gt;</oef:PerformanceTableUsesHighestFederalRate>
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      id="x_50163bcf-37da-4217-afeb-f5bd88d5507a">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; Actual after-tax returns depend on your tax situation and may differ from &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;those shown. After-tax returns shown are not relevant if you are tax-exempt or if you hold your Fund shares through tax-advantaged arrangements (such as a 401(k) plan or individual retirement account).&lt;/span&gt;</oef:PerformanceTableNotRelevantToTaxDeferred>
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      id="x_3eb41a5c-b769-4bd5-a10c-648ac2aeea4f">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; Past performance (before and after taxes) is not an indication of &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;future performance.&lt;/span&gt;</oef:PerformancePastDoesNotIndicateFuture>
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      id="x_22aab9ec-cf54-43e2-9693-f87e4be2029b">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-weight:bold;"&gt;Annual Total Returns/Class III Shares&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:6.5pt;font-weight:bold;position:relative;top:-2.75pt;"&gt;1&lt;/span&gt; &lt;br/&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;Years Ending December 31&lt;/span&gt;</oef:BarChartHeading>
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      id="x_11735f7a-fdba-4053-9777-1f73308d0d94">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;Highest Quarter:&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;9.40%&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;-sec-ix-hidden:a66aab50-f7b1-4dc8-adf5-ecd3f9d00036"&gt;2Q 2020&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;Lowest Quarter:&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;-18.29%&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;-sec-ix-hidden:f6439556-a1d8-4278-b027-073e9849ebbe"&gt;1Q 2020&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;Year-to-Date:&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;5.44%&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;As of&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;3/31/2025&lt;/span&gt;</oef:BarChartClosingTextBlock>
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      id="x_42ccc398-359e-456b-a952-4699bbbf3734">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;Highest Quarter:&lt;/span&gt;</oef:HighestQuarterlyReturnLabel>
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      id="x_4feceae8-a46d-4c4c-ad40-e1673f1ac837">2025-03-31</oef:BarChartYearToDateReturnDate>
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      id="a79ae177-c293-49b2-8720-65e4d1bafefc">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-weight:bold;"&gt;Average Annual Total Returns&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:6.5pt;font-weight:bold;position:relative;top:-2.75pt;"&gt;1&lt;/span&gt; &lt;br/&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;Periods Ending December 31, 2024&lt;/span&gt;</oef:PerformanceTableHeading>
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      id="x_500379a7-8cfc-4e70-82a0-ce51a4594075">2011-06-15</oef:PerfInceptionDate>
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      id="x_092b4ae4-ef86-49fb-8463-a29c672072e0">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-weight:bold;"&gt;Investment objective&lt;/span&gt;</oef:ObjectiveHeading>
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      id="d27a17b2-22d1-4dd3-a2d5-95bebb00e45f">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-weight:bold;"&gt;Fees and expenses&lt;/span&gt;</oef:ExpenseHeading>
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      contextRef="S000036091"
      id="f796230d-b3a5-4980-9d37-7b3a90da1cd4">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;margin-left:3.76%;"&gt;The table below describes the fees and expenses that you may bear if you buy, hold, and sell shares of the Fund. You may pay &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;other fees, such as brokerage commissions and other fees to financial intermediaries, which are not reflected in the table and example below.&lt;/span&gt;</oef:ExpenseNarrativeTextBlock>
    <oef:OperatingExpensesCaption
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      id="x_8df04a2a-038f-451d-a6c9-02ff251f06b7">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-weight:bold;"&gt;Annual Fund operating expenses &lt;/span&gt; &lt;br/&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;(expenses that you bear each year as a percentage of the value of your investment)&lt;/span&gt;</oef:OperatingExpensesCaption>
    <oef:ManagementFeesOverAssets
      contextRef="S000036091_C000110451"
      decimals="4"
      id="x_680133c7-28c8-4076-8277-3eddd2ea1269"
      unitRef="pure">0.0000</oef:ManagementFeesOverAssets>
    <oef:OtherExpensesOverAssets
      contextRef="S000036091_C000110451"
      decimals="4"
      id="fd44504b-2b96-426a-9bb9-9a2689afdb2e"
      unitRef="pure">0.0047</oef:OtherExpensesOverAssets>
    <oef:Component1OtherExpensesOverAssets
      contextRef="S000036091_C000110451"
      decimals="4"
      id="x_6b4ebf2f-5d69-40ec-8a36-8c6131eddcee"
      unitRef="pure">0.0038</oef:Component1OtherExpensesOverAssets>
    <oef:Component3OtherExpensesOverAssets
      contextRef="S000036091_C000110451"
      decimals="4"
      id="x_752498c1-947c-479d-8e3a-06a4a1e8c1aa"
      unitRef="pure">0.0009</oef:Component3OtherExpensesOverAssets>
    <oef:ExpensesOverAssets
      contextRef="S000036091_C000110451"
      decimals="4"
      id="b22fe8b4-a502-4ebe-9057-925ead63b371"
      unitRef="pure">0.0047</oef:ExpensesOverAssets>
    <oef:FeeWaiverOrReimbursementOverAssets
      contextRef="S000036091_C000110451"
      decimals="4"
      id="fdfeba38-543f-45a6-bd22-7502b430dda0"
      unitRef="pure">-0.0006</oef:FeeWaiverOrReimbursementOverAssets>
    <oef:NetExpensesOverAssets
      contextRef="S000036091_C000110451"
      decimals="4"
      id="x_5a792e8c-2461-4447-9555-a7d132902237"
      unitRef="pure">0.0041</oef:NetExpensesOverAssets>
    <oef:FeeWaiverOrReimbursementOverAssetsDateOfTermination
      contextRef="S000036091"
      id="x_71020a92-4338-4200-a4d9-737a4de2aa40">&lt;span style="color:#000000;font-family:Times New Roman;font-size:8pt;font-style:italic;"&gt;June 30, 2026&lt;/span&gt;</oef:FeeWaiverOrReimbursementOverAssetsDateOfTermination>
    <oef:ExpenseExampleHeading
      contextRef="S000036091"
      id="x_12cc57b9-948a-492a-8056-3d450b035283">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-weight:bold;"&gt;Example&lt;/span&gt;</oef:ExpenseExampleHeading>
    <oef:ExpenseExampleNarrativeTextBlock
      contextRef="S000036091"
      id="x_80283835-8b72-467d-b2c5-e3e1909381a8">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;margin-left:3.76%;"&gt;This example is intended to help you compare the cost of investing in the Fund with the cost of investing in other funds. The &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;example assumes that you invest $10,000 in the Fund for the time periods indicated, regardless of whether or not you redeem your shares at the end of such periods. The example also assumes that your investment has a 5% return each year and that the Fund&#x2019;s operating expenses remain the same as those shown in the table. The one year amounts shown reflect the expense reimbursement noted in the expense table. Although your actual costs may be higher or lower, based on these assumptions your costs would be:&lt;/span&gt;</oef:ExpenseExampleNarrativeTextBlock>
    <oef:ExpenseExampleYear01
      contextRef="S000036091_C000110451"
      decimals="INF"
      id="e39c2749-9eca-451e-abcc-df56327db982"
      unitRef="USD">42</oef:ExpenseExampleYear01>
    <oef:ExpenseExampleYear03
      contextRef="S000036091_C000110451"
      decimals="INF"
      id="x_96294b70-b484-47c1-a11b-b661f6ff6101"
      unitRef="USD">145</oef:ExpenseExampleYear03>
    <oef:ExpenseExampleYear05
      contextRef="S000036091_C000110451"
      decimals="INF"
      id="ddd83726-9965-4902-8744-6fbb4504c0fc"
      unitRef="USD">257</oef:ExpenseExampleYear05>
    <oef:ExpenseExampleYear10
      contextRef="S000036091_C000110451"
      decimals="INF"
      id="x_70b3a9bb-2cf2-43a6-93b6-c5afb79edfe5"
      unitRef="USD">586</oef:ExpenseExampleYear10>
    <oef:PortfolioTurnoverHeading
      contextRef="S000036091"
      id="x_7af8771b-5555-46a4-b06b-528587023bb1">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-weight:bold;"&gt;Portfolio turnover&lt;/span&gt;</oef:PortfolioTurnoverHeading>
    <oef:PortfolioTurnoverTextBlock
      contextRef="S000036091"
      id="f188f429-7a53-436f-8db5-92751308a225">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;margin-left:3.76%;"&gt;The Fund pays transaction costs, such as commissions, when it buys and sells securities. A higher portfolio turnover rate may &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;result in higher transaction costs and, for holders of Fund shares subject to U.S. taxes, higher income taxes. These transaction costs, which are not reflected in Annual Fund operating expenses or in the Example, affect the Fund&#x2019;s performance.&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; During its fiscal year &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;ended February 28, 2025, the Fund&#x2019;s portfolio turnover rate (excluding short-term investments) was &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;133&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;% of the average value of its portfolio securities.&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; That portfolio turnover rate includes investments in U.S. Treasury Fund, which the Fund uses as a short-term &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;investment vehicle for cash management. The Fund&#x2019;s portfolio turnover rate during its fiscal year ended February 28, 2025 (excluding transactions in U.S. Treasury Fund and other short-term investments) was 129% of the average value of its portfolio securities.&lt;/span&gt;</oef:PortfolioTurnoverTextBlock>
    <oef:PortfolioTurnoverRate
      contextRef="S000036091"
      decimals="4"
      id="x_821194e5-25fe-49ed-845f-c7b520dbee67"
      unitRef="pure">1.33</oef:PortfolioTurnoverRate>
    <oef:StrategyHeading
      contextRef="S000036091"
      id="bc0e9a4d-12bd-46f2-9938-c6c00200c493">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-weight:bold;"&gt;Principal investment strategies&lt;/span&gt;</oef:StrategyHeading>
    <oef:StrategyNarrativeTextBlock
      contextRef="S000036091"
      id="x_623be089-6e41-4a99-86ac-addc861ad0a6">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;margin-left:3.76%;"&gt;The investment strategies GMO pursues for the Fund are intended to complement the strategies it is pursuing for GMO &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;Benchmark-Free Allocation Fund and other accounts it manages. Accordingly, the Fund is not intended to serve as a standalone investment.&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;margin-left:3.76%;"&gt;GMO seeks to achieve the Fund&#x2019;s investment objective by investing the Fund&#x2019;s assets in asset classes GMO believes offer the most &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;attractive risk-adjusted returns. GMO uses its quantitative multi-year forecasts of returns among asset classes, together with its assessment of the relative risks of asset classes, to determine the asset classes in which the Fund invests and how much the Fund invests in each asset class. An important component of those forecasts is GMO&#x2019;s expectation that valuations ultimately revert to their fundamental fair (or intrinsic) value over a complete market cycle. GMO changes the Fund&#x2019;s asset class exposures in response to &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;margin-left:0%;"&gt;changes in GMO&#x2019;s investment outlook and its assessment of market valuations and may use redemptions or purchases of Fund shares to &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;rebalance the Fund&#x2019;s investments. The factors GMO considers and investment methods GMO uses can change over time.&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;margin-left:3.76%;"&gt;GMO does not manage the Fund to, or control the Fund&#x2019;s risk relative to, any securities index or securities benchmark. The Fund &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;is permitted to invest in any asset class (e.g., U.S., non-U.S., and emerging market equity; U.S., non-U.S., and emerging market debt (including asset-backed securities and municipal bonds); real estate; and commodities), strategy (e.g., long/short and event-driven strategies), sector, country, or region, and at times may have substantial exposure to a single asset class, sector, country, region, issuer, or currency and companies with similar market capitalizations. In addition, the Fund is not restricted in its exposure to any particular market and may invest in securities of companies of any market capitalization and, in the case of debt instruments, of any credit quality (including below investment grade securities, commonly referred to as &#x201c;high yield&#x201d; or &#x201c;junk bonds&#x201d;), maturity and duration. The Fund also may make extensive use of short sales. GMO&#x2019;s ability to shift investments among asset classes is not subject to any limits.&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;margin-left:3.76%;"&gt;As an alternative to investing directly in securities, the Fund may invest in exchange-traded and over-the-counter (OTC) &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;derivatives (e.g., selling put options on securities) and exchange-traded funds (ETFs). The Fund also may invest in derivatives and ETFs in an attempt to obtain or adjust elements of its long or short investment exposure. Derivatives used may include options, futures, swap contracts, and reverse repurchase agreements. The Fund&#x2019;s foreign currency exposure may differ from the currency exposure of its securities. The Fund may lend its portfolio securities.&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;margin-left:3.76%;"&gt;The Fund is not limited in its use of derivatives or in the total notional value of its derivative positions. Leverage is not a principal &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;component of the Fund&#x2019;s investment strategy. However, because of its derivative positions, the Fund may at times have gross investment exposure in excess of its net assets (i.e., the Fund may be leveraged) and, therefore, may be subject to higher risk of loss during those times than if the Fund were not leveraged. &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;margin-left:3.76%;"&gt;In seeking to achieve the Fund&#x2019;s investment objective, GMO may invest a significant portion of the Fund&#x2019;s net assets in cash and &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;cash equivalents.&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;margin-left:3.76%;"&gt;The Fund also may invest in U.S. Treasury Fund, in money market funds unaffiliated with GMO, and directly in the types of &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;investments typically held by money market funds.&lt;/span&gt;</oef:StrategyNarrativeTextBlock>
    <oef:RiskTextBlock
      contextRef="S000036091_RiskLoseMoneyMember"
      id="x_84932a11-af34-4fc5-8879-d779c562a6d9">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;Many factors can affect this value, and you may lose money by investing in the Fund.&lt;/span&gt;</oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="S000036091_RiskNotInsuredDepositoryInstitutionMember"
      id="c996624f-0d9a-4419-9edb-f9497e0e96a9">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;An investment in the Fund is not a bank deposit and is not insured or guaranteed by the FDIC or &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;any government agency.&lt;/span&gt;</oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="S000036091_MarketRiskEquitiesRiskMember"
      id="fc2aa2ab-3b8c-49ad-aa44-41031f26d783">&lt;span style="color:#000000;font-family:Times New Roman;font-size:8pt;"&gt;&#x25cf;&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-style:italic;"&gt;Market Risk &#x2013; Equities &#x2013; &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;The market price of an equity in the Fund&#x2019;s portfolio may decline due to factors affecting the issuer or its industry or the economy and equity markets generally. If the Fund purchases an equity for less than its fundamental fair (or intrinsic) value as assessed by GMO, the Fund runs the risk that the market price of the equity will not appreciate or will decline (for example, if GMO&#x2019;s assessment proves to be incorrect or the market fails to recognize the equity&#x2019;s intrinsic value). The Fund also may purchase equities that typically trade at higher multiples of current earnings than other securities, and the market prices of these equities often are more sensitive to changes in future earnings expectations and interest rates than the market prices of equities trading at lower multiples. Declines in stock market prices generally are likely to reduce the net asset value of the Fund&#x2019;s shares.&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;When the Fund writes put options on a stock index, the value of those options will decline when the value of that index declines. The value of an index depends on the value of the equity securities in the index. Also, the Fund&#x2019;s investment strategy of writing put options on stock indices can be expected to cause that strategy to underperform relative to those indices when the value of those indices rises sharply.&lt;/span&gt;</oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="S000036091_MarketRiskFixedIncomeRiskMember"
      id="e3a5bdd0-f251-4365-874a-1976a4319d29">&lt;span style="color:#000000;font-family:Times New Roman;font-size:8pt;"&gt;&#x25cf;&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-style:italic;"&gt;Market Risk &#x2013; Fixed Income&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; &#x2013; The market price of a fixed income investment can decline due to market-related factors, including rising interest or inflation rates and widening credit spreads, or decreased liquidity due, for example, to market uncertainty about the value of a fixed income investment (or class of fixed income investments).&lt;/span&gt;</oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="S000036091_NonUSInvestmentRiskMember"
      id="x_520b7cf9-1ecf-40e1-92c1-cc2f8e2ec64e">&lt;span style="color:#000000;font-family:Times New Roman;font-size:8pt;"&gt;&#x25cf;&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-style:italic;"&gt;Non-U.S. Investment Risk&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; &#x2013; The market prices of many non-U.S. securities fluctuate more than those of U.S. securities. Many non-U.S. securities markets are less stable, smaller, less liquid, and less regulated than U.S. securities markets, and the cost of trading in those markets often is higher than in U.S. securities markets. In addition, non-U.S. securities issuers often are not subject to as much regulation as U.S. issuers, and the reporting, recordkeeping, accounting, custody, and auditing standards to which those issuers are subject often are not as rigorous as U.S. standards. In addition, the Fund is subject to taxation by countries other than the United States, including potentially on a retroactive basis, on (i) capital gains it realizes or dividends, interest, or other amounts it realizes or accrues in respect of non-U.S. investments; (ii) transactions in those investments; and (iii) repatriation of proceeds generated from the sale or other disposition of those investments.&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; Also, the Fund needs a license to invest directly in securities &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;traded in many non-U.S. securities markets, and the Fund is subject to the risk that its license is terminated or suspended. In some non-U.S. securities markets, prevailing custody and trade settlement practices (e.g., the requirement to pay for securities prior to receipt) expose the Fund to credit and other risks. Further, adverse changes in investment regulations, capital requirements or exchange controls could adversely affect the value of the Fund&#x2019;s investments. The risks above (such as substantial price fluctuations &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;margin-left:0.00%;"&gt;and market instability, illiquidity and lack of regulation) and other risks (e.g., nationalization, expropriation or other confiscation of assets of non-U.S. issuers, difficulties enforcing legal judgments or contractual rights and geopolitical risks) tend to be higher for investments in the securities of issuers tied economically to emerging countries. The economies of emerging countries often depend &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;predominantly on only a few industries or commodities and often are more volatile than the economies of developed countries.&lt;/span&gt;</oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="S000036091_ManagementandOperationalRiskMember"
      id="x_727aea31-1805-4016-b741-e8f989cfeda2">&lt;span style="color:#000000;font-family:Times New Roman;font-size:8pt;"&gt;&#x25cf;&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-style:italic;"&gt;Management and Operational Risk&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; &#x2013; The Fund runs the risk that GMO&#x2019;s investment techniques will fail to produce intended results.&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;GMO uses quantitative models as part of its investment process. GMO&#x2019;s models may not accurately predict future market movements. In addition, GMO&#x2019;s models rely on assumptions and data that are subject to limitations (e.g., inaccuracies, staleness) that could adversely affect their predictive value.&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; The Fund also runs the risk that GMO&#x2019;s assessment of an investment, including a &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;security&#x2019;s fundamental fair (or intrinsic) value, is wrong or that deficiencies in GMO&#x2019;s or another service provider&#x2019;s internal systems or controls will cause losses for the Fund or impair Fund operations.&lt;/span&gt;</oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="S000036091_DerivativesandShortSalesRiskMember"
      id="x_84a081a3-3c6d-40fc-b379-73953cbfb3d9">&lt;span style="color:#000000;font-family:Times New Roman;font-size:8pt;"&gt;&#x25cf;&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-style:italic;"&gt;Derivatives and Short Sales Risk&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; &#x2013; The use of derivatives involves the risk that their value may not change as expected relative to changes in the value of the underlying assets, pools of assets, rates, currencies or indices. Derivatives also present other risks, including market risk, illiquidity risk, currency risk, credit risk, leveraging risk, commodities risk and counterparty risk. The market price of an option is affected by many factors, including changes in the market prices or dividend rates of underlying securities (or in the case of indices, the securities in such indices); the time remaining before expiration; changes in interest rates or exchange rates; and changes in the actual or perceived volatility of the relevant index or underlying securities. The Fund typically creates short investment exposure by selling securities short or by taking a derivative position in which the value of the derivative moves in the opposite direction from the price of an underlying asset, pool of assets, rate, currency or index. Specifically, the net asset value of the Fund&#x2019;s shares will be adversely affected if the securities or other assets that are the subject of the Fund&#x2019;s short exposures appreciate in value. The risk of loss associated with derivatives that provide short investment exposure and short sales of securities is theoretically unlimited.&lt;/span&gt;</oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="S000036091_IlliquidityRiskMember"
      id="c7301f9e-246d-415a-b5b4-656e968ba56e">&lt;span style="color:#000000;font-family:Times New Roman;font-size:8pt;"&gt;&#x25cf;&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-style:italic;"&gt;Illiquidity Risk&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; &#x2013; Low trading volume, lack of a market maker, large position size, or legal restrictions increase the risk that the Fund or an underlying fund is limited or prevented from selling particular securities or closing derivative positions at desirable prices at a particular time or at all.&lt;/span&gt;</oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="S000036091_CurrencyRiskMember"
      id="x_837a4924-43e8-4d1e-b470-a100b17cd411">&lt;span style="color:#000000;font-family:Times New Roman;font-size:8pt;"&gt;&#x25cf;&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-style:italic;"&gt;Currency Risk&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; &#x2013; Fluctuations in exchange rates can adversely affect the market value of the Fund&#x2019;s foreign currency holdings and investments denominated in foreign currencies.&lt;/span&gt;</oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="S000036091_CreditRiskMember"
      id="d93cc7e7-0e45-4a0b-b3af-8eb765b720e2">&lt;span style="color:#000000;font-family:Times New Roman;font-size:8pt;"&gt;&#x25cf;&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-style:italic;"&gt;Credit Risk&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; &#x2013; The Fund runs the risk that the issuer or guarantor of a fixed income investment (including a sovereign or quasi-sovereign debt issuer) or the obligor of an obligation underlying an asset-backed security will be unable or unwilling to satisfy its obligation to pay principal and interest or otherwise to honor its obligations in a timely manner or at all. The market price of a fixed income investment will normally decline as a result of the failure of an issuer, guarantor, or obligor to meet its payment obligations or in anticipation of such a failure. Below investment grade investments (commonly referred to as high yield or &#x201c;junk&#x201d; bonds) have speculative characteristics and are subject to greater credit risk than other fixed income investments. Negative changes in economic conditions or other circumstances are more likely to impair the ability of issuers of below investment grade investments to make principal and interest payments than issuers of investment grade investments.&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; In addition, investments in emerging country sovereign &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;or quasi-sovereign debt are subject to a heightened risk that the issuer responsible for repayment of the debt may be unable or unwilling to pay interest and repay principal when due, and the Fund may lack recourse against the issuer in the event of a default. Investments in quasi-sovereign debt also are subject to the risk that the issuer will default independently of its sovereign.&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;Investments in distressed or defaulted or other low quality debt investments generally are considered speculative and are subject to substantial risks not normally associated with investments in higher quality securities, including adverse business, financial or economic conditions that lead to their issuers&#x2019; payment defaults and insolvency proceedings. In particular, distressed or defaulted obligations might be repaid, if at all, only after lengthy workout or bankruptcy proceedings during which the issuer might not make any interest or other payments, and the Fund may incur additional expenses in its effort to be repaid. If GMO&#x2019;s assessment of the eventual recovery value of a distressed or defaulted debt investment proves incorrect, the Fund may lose a substantial portion or all of its original investment or may be required to accept cash or instruments worth less than its original investment.&lt;/span&gt;</oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="S000036091_MarketRiskAssetBackedSecuritiesRiskMember"
      id="x_30b7e7ce-68b3-4fd1-95be-ffb6ef311fac">&lt;span style="color:#000000;font-family:Times New Roman;font-size:8pt;"&gt;&#x25cf;&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-style:italic;"&gt;Market Risk &#x2013; Asset-Backed Securities&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; &#x2013; The market price of asset-backed securities, like that of other fixed income investments, can decline for a variety of reasons, including increases in interest rates. In addition, the market price can decrease due to a reduction in or decrease in the reliability of their payment streams. Payment streams associated with asset-backed securities held by the Fund depend on many factors (e.g., the cash flow generated by the assets backing the securities, deal structure, and creditworthiness of any credit-support provider), and a problem in any of these factors can lead to a reduction in the payment stream GMO expected the Fund to receive when the Fund purchased the asset-backed security. The liquidity of asset-backed securities (particularly below investment grade asset-backed securities) may change over time. During periods of deteriorating economic conditions, such as recessions, or periods of rising unemployment, delinquencies and losses generally increase, sometimes dramatically, for asset-backed securities whose underlying assets consist of loans, sales contracts, receivables and other obligations.&lt;/span&gt;</oef:RiskTextBlock>
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      id="c78d9ebc-07ef-4b3e-b362-948be703de34">&lt;span style="color:#000000;font-family:Times New Roman;font-size:8pt;"&gt;&#x25cf;&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-style:italic;"&gt;Counterparty Risk&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; &#x2013; The Fund runs the risk that the counterparty to a derivatives contract or a clearing member used by the Fund to hold a cleared derivatives contract is unable or unwilling to make timely settlement payments, return the Fund&#x2019;s collateral or otherwise honor its obligations.&lt;/span&gt;</oef:RiskTextBlock>
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      id="x_7e1800c8-6835-4e29-9376-37b7320b22d6">&lt;span style="color:#000000;font-family:Times New Roman;font-size:8pt;"&gt;&#x25cf;&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-style:italic;"&gt;Focused Investment Risk&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; &#x2013; Investments in countries, regions, asset classes, sectors, industries, currencies, or issuers that are subject to the same or similar risk factors and investments whose market prices are closely correlated are subject to higher overall risk than investments that are more diversified or whose market prices are not as closely correlated.&lt;/span&gt;</oef:RiskTextBlock>
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      id="x_1dc33370-87c2-4df7-956a-b23bc894ec10">&lt;span style="color:#000000;font-family:Times New Roman;font-size:8pt;"&gt;&#x25cf;&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-style:italic;"&gt;Leveraging Risk&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; &#x2013; The use of derivatives, short sales and securities lending can create leverage. Leverage increases the Fund&#x2019;s losses when the value of its investments (including derivatives) declines. In addition, the Fund&#x2019;s portfolio will be leveraged if it exercises its right to delay payment on a redemption and the value of the Fund&#x2019;s assets declines between the time a redemption request is treated as being received by the Fund and the time the Fund liquidates assets to fund that redemption.&lt;/span&gt;</oef:RiskTextBlock>
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      contextRef="S000036091_SmallerCompanyRiskMember"
      id="d94637d0-d6df-47ea-91b4-876b4d0ee99f">&lt;span style="color:#000000;font-family:Times New Roman;font-size:8pt;"&gt;&#x25cf;&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-style:italic;"&gt;Smaller Company Risk&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; &#x2013; Smaller companies may have limited product lines, markets, or financial resources, lack the competitive strength of larger companies, have less experienced managers or depend on a few key employees. The securities of companies with smaller market capitalizations often are less widely held and trade less frequently and in lesser quantities, and their market prices often fluctuate more, than the securities of companies with larger market capitalizations.&lt;/span&gt;</oef:RiskTextBlock>
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      contextRef="S000036091_MarketDisruptionandGeopoliticalRiskMember"
      id="x_754cdb49-4350-4efb-89aa-02a8d2497672">&lt;span style="color:#000000;font-family:Times New Roman;font-size:8pt;"&gt;&#x25cf;&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-style:italic;"&gt;Market Disruption and Geopolitical Risk&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; &#x2013; Geopolitical and other events (e.g., wars, pandemics, sanctions, terrorism, diplomatic tensions, dramatic changes in regulatory and/or foreign policy, cyberattacks, and rapid technological developments such as artificial intelligence) often disrupt securities markets and adversely affect the general economy or particular economies and markets. Those events, as well as other changes in non-U.S. and U.S. economic and political conditions, could exacerbate other risks or otherwise reduce the value of the Fund&#x2019;s investments.&lt;/span&gt;</oef:RiskTextBlock>
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      contextRef="S000036091_EventDrivenRiskMember"
      id="x_752abf6b-c504-43b2-b193-0462191fb582">&lt;span style="color:#000000;font-family:Times New Roman;font-size:8pt;"&gt;&#x25cf;&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-style:italic;"&gt;Event-Driven Risk&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; &#x2013; If the Fund purchases securities in anticipation of a proposed merger, acquisition, exchange offer, tender offer, or other similar transaction and that transaction later appears likely to be delayed or unlikely to be consummated or, in fact, is not consummated or is delayed, the market price of the securities purchased by the Fund may decline sharply, resulting in losses to the Fund. The risk/reward payout of event-driven strategies (such as merger arbitrage) typically is asymmetric, with the losses in failed transactions often far exceeding the gains in successful transactions. Event-driven strategies are subject to the risk of overall market movements, and the Fund may experience losses even if a transaction is consummated.&lt;/span&gt;</oef:RiskTextBlock>
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      contextRef="S000036091_CommoditiesRiskMember"
      id="x_6b3e6523-69f5-46ad-b2c7-ac4a3e357da7">&lt;span style="color:#000000;font-family:Times New Roman;font-size:8pt;"&gt;&#x25cf;&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-style:italic;"&gt;Commodities Risk&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; &#x2013; Commodity prices can be extremely volatile, and exposure to commodities can cause the net asset value of the Fund&#x2019;s shares to decline or fluctuate significantly.&lt;/span&gt;</oef:RiskTextBlock>
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      contextRef="S000036091_LargeTransactionsRiskMember"
      id="f30268c8-e2a4-49a4-bd8f-5dbef720e4b2">&lt;span style="color:#000000;font-family:Times New Roman;font-size:8pt;"&gt;&#x25cf;&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-style:italic;"&gt;Large Transactions Risk&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; &#x2013; To the extent that a large number of shares of the Fund is held by a single shareholder (e.g., an institutional investor or another GMO Fund) or a group of shareholders with a common investment strategy (e.g., GMO asset allocation accounts), the Fund is subject to the risk that a redemption by (or caused by) that shareholder or group will require the Fund to sell investments at disadvantageous prices, disrupt the Fund&#x2019;s operations, lead to temporary overexposure to the Fund&#x2019;s intended investment program or force the Fund&#x2019;s liquidation. The Fund also may be subject to these effects when a number of shareholders collectively redeem or sell a large amount of Fund shares.&lt;/span&gt;</oef:RiskTextBlock>
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      contextRef="S000036091_FundofFundsRiskMember"
      id="x_40582637-de8b-48fa-ab3b-aa30889a3b63">&lt;span style="color:#000000;font-family:Times New Roman;font-size:8pt;"&gt;&#x25cf;&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-style:italic;"&gt;Fund of Funds Risk&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; &#x2013; The Fund is indirectly exposed to all of the risks of an investment in the underlying funds in which it invests, including the risk that those underlying funds will not perform as expected. The fees and expenses associated with an investment in the Fund are less predictable than those associated with an investment in funds that charge a fixed management fee.&lt;/span&gt;</oef:RiskTextBlock>
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      id="cf681190-276c-4e5c-954c-960d009e481b">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-weight:bold;"&gt;Performance&lt;/span&gt;</oef:BarChartAndPerformanceTableHeading>
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      id="d13d3ba9-bd3f-4ae6-9cbf-0d277e62b681">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;margin-left:3.76%;"&gt;The bar chart and table below provide some indication of the risks of investing in the Fund by showing changes in the Fund&#x2019;s &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;annual total returns from year to year for the periods indicated and by comparing the Fund&#x2019;s average annual total returns for different calendar periods with those of the Consumer Price Index, the Bloomberg U.S. Treasury Inflation Notes: 1-10 Year Index, and two broad-based securities market indices.&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; After-tax returns are calculated using the historical highest individual federal marginal income tax &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;rates and do not reflect the impact of state and local taxes.&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; Actual after-tax returns depend on your tax situation and may differ from &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;those shown. After-tax returns shown are not relevant if you are tax-exempt or if you hold your Fund shares through tax-advantaged arrangements (such as a 401(k) plan or individual retirement account).&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; Past performance (before and after taxes) is not an indication of &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;future performance.&lt;/span&gt;</oef:PerformanceNarrativeTextBlock>
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      id="x_1e086d32-497b-4011-b966-46ae9ac89a45">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;margin-left:3.76%;"&gt;The bar chart and table below provide some indication of the risks of investing in the Fund by showing changes in the Fund&#x2019;s &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;annual total returns from year to year for the periods indicated and by comparing the Fund&#x2019;s average annual total returns for different calendar periods with those of the Consumer Price Index, the Bloomberg U.S. Treasury Inflation Notes: 1-10 Year Index, and two broad-based securities market indices.&lt;/span&gt;</oef:PerformanceInformationIllustratesVariabilityOfReturns>
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      id="x_7b23da42-98c3-4201-9f2f-45411354e1d7">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; After-tax returns are calculated using the historical highest individual federal marginal income tax &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;rates and do not reflect the impact of state and local taxes.&lt;/span&gt;</oef:PerformanceTableUsesHighestFederalRate>
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      id="x_8367f6d3-cd44-4360-863c-7ce4c92642e9">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; Actual after-tax returns depend on your tax situation and may differ from &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;those shown. After-tax returns shown are not relevant if you are tax-exempt or if you hold your Fund shares through tax-advantaged arrangements (such as a 401(k) plan or individual retirement account).&lt;/span&gt;</oef:PerformanceTableNotRelevantToTaxDeferred>
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      id="x_17f062b1-a658-486c-a2c8-eb5c4b345173">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; Past performance (before and after taxes) is not an indication of &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;future performance.&lt;/span&gt;</oef:PerformancePastDoesNotIndicateFuture>
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      id="x_92071b18-e543-47f5-9a0d-d3c38f96bdcb">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-weight:bold;"&gt;Annual Total Returns&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:6.5pt;font-weight:bold;position:relative;top:-2.75pt;"&gt;1&lt;/span&gt; &lt;br/&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;Years Ending December 31&lt;/span&gt;</oef:BarChartHeading>
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      id="c511f1b8-4c1c-4793-bb26-fb36ff12070e">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;Highest Quarter:&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;8.44%&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;-sec-ix-hidden:x_2ded10c9-0d44-45ff-b19a-d822fc7934eb"&gt;4Q 2022&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;Lowest Quarter:&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;-18.10%&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;-sec-ix-hidden:x_865fcbaa-6d86-4799-ab4a-8e53d7b62220"&gt;1Q 2020&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;Year-to-Date:&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;5.02%&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;As of&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;3/31/2025&lt;/span&gt;</oef:BarChartClosingTextBlock>
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      id="x_97b928c3-ede1-406d-a8af-9223fa5bf969">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;Highest Quarter:&lt;/span&gt;</oef:HighestQuarterlyReturnLabel>
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      id="fff866e1-ae35-4f15-b8fd-71a399329add">2025-03-31</oef:BarChartYearToDateReturnDate>
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      id="x_2483e3a2-bdf1-4a35-adab-5a3e352cd30b">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-weight:bold;"&gt;Average Annual Total Returns&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:6.5pt;font-weight:bold;position:relative;top:-2.75pt;"&gt;1&lt;/span&gt; &lt;br/&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;Periods Ending December 31, 2024&lt;/span&gt;</oef:PerformanceTableHeading>
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      id="x_1e63f5c0-47d9-470d-8886-f1596cdea505">2012-03-01</oef:PerfInceptionDate>
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      unitRef="pure">0.0125</oef:AvgAnnlRtrPct>
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      id="d659269f-0e5b-4b80-aeda-921d5def03d0"
      unitRef="pure">-0.0033</oef:AvgAnnlRtrPct>
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      contextRef="C000110451_BloombergUSAggregateIndexMember_01Jan2015_31Dec2024"
      decimals="4"
      id="x_49841353-8305-4d8f-936d-2295b54a971d"
      unitRef="pure">0.0135</oef:AvgAnnlRtrPct>
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      contextRef="C000110451_BloombergUSAggregateIndexMember_01Mar2012_31Dec2024"
      decimals="4"
      id="x_2ef15a66-dda0-4862-bad0-97a107c51a13"
      unitRef="pure">0.0162</oef:AvgAnnlRtrPct>
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      contextRef="C000110451_MSCIWorldIndexMember_01Jan2024_31Dec2024"
      decimals="4"
      id="x_5f980f45-bb86-4a3e-b488-440e899f3674"
      unitRef="pure">0.1867</oef:AvgAnnlRtrPct>
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      contextRef="C000110451_MSCIWorldIndexMember_01Jan2020_31Dec2024"
      decimals="4"
      id="de2799f4-a37a-4843-aca6-013c9ddad099"
      unitRef="pure">0.1116</oef:AvgAnnlRtrPct>
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      contextRef="C000110451_MSCIWorldIndexMember_01Jan2015_31Dec2024"
      decimals="4"
      id="x_670137d8-ba50-4c0e-8b93-b069a44d3dda"
      unitRef="pure">0.0995</oef:AvgAnnlRtrPct>
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      contextRef="C000110451_MSCIWorldIndexMember_01Mar2012_31Dec2024"
      decimals="4"
      id="x_566f8288-c7ce-4c74-b254-d636fea2f1e9"
      unitRef="pure">0.1048</oef:AvgAnnlRtrPct>
    <oef:ObjectiveHeading
      contextRef="S000089452"
      id="cb6dc6fc-4a34-49c3-86c5-d98abee565e2">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-weight:bold;"&gt;Investment objective&lt;/span&gt;</oef:ObjectiveHeading>
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      id="x_288cb924-89ad-418c-af39-a07b025fa124">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;Total return and capital preservation.&lt;/span&gt;</oef:ObjectivePrimaryTextBlock>
    <oef:ExpenseHeading
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      id="x_858c5c0c-e431-4957-9266-cdd25e8c05cc">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-weight:bold;"&gt;Fees and expenses&lt;/span&gt;</oef:ExpenseHeading>
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      id="c1576b81-2d37-411f-8139-f214840cdc67">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;margin-left:3.76%;"&gt;The table below describes the fees and expenses that you may bear for each class of shares if you buy, hold, and sell shares of the &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;Fund. You may pay other fees, such as brokerage commissions and other fees to financial intermediaries, which are not reflected in the table and example below.&lt;/span&gt;</oef:ExpenseNarrativeTextBlock>
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      id="x_331561a7-323a-4fa2-ae50-846445d86de8">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-weight:bold;"&gt;Annual Fund operating expenses&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:6.5pt;font-weight:bold;position:relative;top:-2.75pt;"&gt;1&lt;/span&gt; &lt;br/&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;(expenses that you bear each year as a percentage of the value of your investment)&lt;/span&gt;</oef:OperatingExpensesCaption>
    <oef:ManagementFeesOverAssets
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      id="c154fbe8-c6f6-4dcb-8390-0eb33bb8b023"
      unitRef="pure">0.0000</oef:ManagementFeesOverAssets>
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      decimals="4"
      id="x_560fc8d2-08ac-4e85-b914-7d3e0992089d"
      unitRef="pure">0.0073</oef:OtherExpensesOverAssets>
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      contextRef="S000089452_C000256009"
      decimals="4"
      id="x_3459abe0-1606-4e75-93d7-28d3cd792404"
      unitRef="pure">0.0073</oef:ExpensesOverAssets>
    <oef:FeeWaiverOrReimbursementOverAssets
      contextRef="S000089452_C000256009"
      decimals="4"
      id="x_300a6e10-b303-4f87-8ba6-ce9318ab63fb"
      unitRef="pure">-0.0071</oef:FeeWaiverOrReimbursementOverAssets>
    <oef:NetExpensesOverAssets
      contextRef="S000089452_C000256009"
      decimals="4"
      id="a2d7a99a-f95f-450c-a1f2-8527d42626af"
      unitRef="pure">0.0002</oef:NetExpensesOverAssets>
    <oef:OtherExpensesNewFundBasedOnEstimates
      contextRef="S000089452"
      id="bf86e17b-d4bd-4a0a-a8f8-0f0e377f6a72">&lt;span style="color:#000000;font-family:Times New Roman;font-size:8pt;font-style:italic;"&gt;The amounts represent an annualized estimate of the Fund&#x2019;s operating expenses for its initial fiscal year.&lt;/span&gt;</oef:OtherExpensesNewFundBasedOnEstimates>
    <oef:FeeWaiverOrReimbursementOverAssetsDateOfTermination
      contextRef="S000089452"
      id="x_3dc61b27-a7ca-42d0-84a8-ee0a9512e108">&lt;span style="color:#000000;font-family:Times New Roman;font-size:8pt;font-style:italic;"&gt;June 30, 2026 &lt;/span&gt;</oef:FeeWaiverOrReimbursementOverAssetsDateOfTermination>
    <oef:ExpenseExampleHeading
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      id="b4ba029c-7fda-43b2-946f-34f27748094f">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-weight:bold;"&gt;Example&lt;/span&gt;</oef:ExpenseExampleHeading>
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      id="a4607d8b-2f72-42c4-963a-065965afcf04">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;margin-left:3.76%;"&gt;This example is intended to help you compare the cost of investing in the Fund with the cost of investing in other funds. The &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;example assumes that you invest $10,000 in the Fund for the time periods indicated, regardless of whether or not you redeem your shares at the end of such periods. The example also assumes that your investment has a 5% return each year and that the Fund&#x2019;s operating expenses remain the same as those shown in the table. The one year amounts shown reflect the expense reimbursement noted in the expense table. Although your actual costs may be higher or lower, based on these assumptions your costs would be:&lt;/span&gt;</oef:ExpenseExampleNarrativeTextBlock>
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      contextRef="S000089452_C000256009"
      decimals="INF"
      id="x_91da3077-cf4b-4ed1-bfb5-d3eb5324b0ee"
      unitRef="USD">2</oef:ExpenseExampleYear01>
    <oef:ExpenseExampleYear03
      contextRef="S000089452_C000256009"
      decimals="INF"
      id="x_6b7a2bfe-f393-4269-955a-0f84581bd4a1"
      unitRef="USD">162</oef:ExpenseExampleYear03>
    <oef:PortfolioTurnoverHeading
      contextRef="S000089452"
      id="x_15070f54-42f9-4e08-a899-97e6e63ee4a4">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-weight:bold;"&gt;Portfolio turnover&lt;/span&gt;</oef:PortfolioTurnoverHeading>
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      contextRef="S000089452"
      id="eadbd53a-b120-434b-a125-c82bdf0bafd8">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;margin-left:3.76%;"&gt;The Fund pays transaction costs, such as commissions, when it buys and sells securities. A higher portfolio turnover rate may &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;result in higher transaction costs and, for holders of Fund shares subject to U.S. taxes, higher income taxes. These transaction costs, which are not reflected in Annual Fund operating expenses or in the Example, affect the Fund&#x2019;s performance.&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; Because the Fund had not &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;commenced operations as of the fiscal year ended February 28, 2025, the Fund has no reportable portfolio turnover rate.&lt;/span&gt;</oef:PortfolioTurnoverTextBlock>
    <oef:StrategyHeading
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      id="c46e25da-af43-49ec-817c-17f1b04be6ea">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-weight:bold;"&gt;Principal investment strategies&lt;/span&gt;</oef:StrategyHeading>
    <oef:StrategyNarrativeTextBlock
      contextRef="S000089452"
      id="e31daf09-aa9e-458b-bc30-3d2903e64d40">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;margin-left:3.76%;"&gt;The investment strategies GMO pursues for the Fund are intended to complement the strategies it is pursuing for GMO Multi-Asset&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; Credit Fund and other funds and accounts it manages. Accordingly, the Fund is not intended to serve as a standalone investment.&#160;&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;margin-left:3.76%;"&gt;The Fund invests in a portfolio of fixed income instruments of varying maturities, which may be represented by bonds, forward &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;contracts or derivatives such as options, futures contracts, or swap agreements. GMO uses a variety of fundamental and quantitative processes to manage the Fund. GMO evaluates the relative attractiveness of particular fixed income markets and instruments using various fixed income risk premium measures.&#160; The Fund may invest in bonds of any maturity, duration, and credit quality.&#160;&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;margin-left:3.76%;"&gt;The Fund may invest in any sector of the bond market and is not required to maintain a minimum or maximum allocation of &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;investments in any one sector. The sectors, types of bonds and other investments to which the Fund may obtain exposure include, but are not limited to:&#160;&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:8pt;"&gt;&#x25cf;&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;inflation-indexed bonds issued by the U.S. government (including Inflation-Protected Securities) and non-U.S. governments and their respective agencies or instrumentalities (whether or not guaranteed or insured by those governments) and inflation-indexed bonds issued by corporations;&#160;&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:8pt;"&gt;&#x25cf;&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;investment grade bonds denominated in various currencies, including bonds issued by the U.S. and non-U.S. governments and their respective agencies or instrumentalities (whether or not guaranteed or insured by those governments), corporations and municipalities (taxable and tax-exempt);&#160;&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:8pt;"&gt;&#x25cf;&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;leveraged loans;&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:8pt;"&gt;&#x25cf;&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;below investment grade bonds (commonly referred to as &#x201c;high yield&#x201d; or &#x201c;junk bonds&#x201d;);&#160;&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:8pt;"&gt;&#x25cf;&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;emerging country sovereign and quasi-sovereign debt; and&#160;&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:8pt;"&gt;&#x25cf;&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;asset-backed securities, including mortgage related and mortgage-backed securities.&#160;&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;margin-left:3.76%;"&gt;The Fund also may invest in exchange-traded funds (ETFs) and exchange-traded and over-the-counter (OTC) derivatives, including &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;futures contracts, currency options, forward currency contracts, repurchase agreements and reverse repurchase agreements, swap contracts (such as credit default swaps, swaps on securities and securities indices, total return swaps, interest rate swaps, currency swaps, cross currency basis swaps, commodity swaps, inflation swaps, municipal swaps, and other types of swaps), interest rate options, and other types of derivatives. In addition, the Fund may lend its portfolio securities. The Fund is not limited in its use of derivatives or in the total notional value of its derivative positions. Leverage is not a primary component of the investment strategy.&#160; However, because of its derivative positions, the Fund may at times have gross investment exposure in excess of its net assets (i.e., the Fund may be leveraged) and, therefore, may be subject to higher risk of loss during those times than if the Fund were not leveraged. The Fund&#x2019;s performance can depend substantially on the performance of assets or indices underlying its derivatives even though it does not own those assets or indices.&#160;&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;margin-left:3.76%;"&gt;GMO does not seek to maintain a specified interest rate duration for the Fund, and the Fund&#x2019;s interest rate duration will change &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;depending on the Fund&#x2019;s investments and GMO&#x2019;s assessment of different sectors of the bond market. The Fund&#x2019;s interest rate duration may be positive or negative. The Fund may invest in securities of companies of any market capitalization.&#160;&#160;&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;margin-left:3.76%;"&gt;In seeking to achieve the Fund&#x2019;s investment objective, GMO may invest a significant portion of the Fund&#x2019;s net assets in cash and &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;cash equivalents.&#160; The Fund may also invest in GMO U.S. Treasury Fund, in money market funds unaffiliated with GMO, and directly in the types of investments typically held by money market funds.&#160;&#160;&#160;&lt;/span&gt;</oef:StrategyNarrativeTextBlock>
    <oef:RiskTextBlock
      contextRef="S000089452_RiskLoseMoneyMember"
      id="x_52228acb-f5a8-408e-9210-64077890d0aa">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;Many factors can affect this value, and you may lose money by investing in the Fund.&lt;/span&gt;</oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="S000089452_RiskNotInsuredDepositoryInstitutionMember"
      id="x_93cc6f5b-6fad-458d-af39-3304b032ba76">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;An investment in the Fund is not a bank deposit and is not insured or guaranteed by the FDIC or &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;any government agency.&lt;/span&gt;</oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="S000089452_CreditRiskMember"
      id="x_47862032-5fb6-4f4c-8904-69a5776b874a">&lt;span style="color:#000000;font-family:Times New Roman;font-size:8pt;"&gt;&#x25cf;&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-style:italic;"&gt;Credit Risk&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; &#x2013; The Fund runs the risk that the issuer or guarantor of a fixed income investment (including a sovereign or quasi-sovereign debt issuer) or the obligor of an obligation underlying an asset-backed security will be unable or unwilling to satisfy its obligation to pay principal and interest or otherwise to honor its obligations in a timely manner or at all. The market price of a fixed income investment will normally decline as a result of the failure of an issuer, guarantor, or obligor to meet its payment obligations or in anticipation of such a failure. Below investment grade investments (commonly referred to as high yield or &#x201c;junk&#x201d; bonds) have speculative characteristics and are subject to greater credit risk than other fixed income investments. Negative changes in economic conditions or other circumstances are more likely to impair the ability of issuers of below investment grade investments to make principal and interest payments than issuers of investment grade investments.&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; In addition, investments in emerging country sovereign &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;or quasi-sovereign debt are subject to a heightened risk that the issuer responsible for repayment of the debt may be unable or unwilling to pay interest and repay principal when due, and the Fund may lack recourse against the issuer in the event of a default. Investments in quasi-sovereign debt also are subject to the risk that the issuer will default independently of its sovereign.&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;Investments in distressed or defaulted or other low quality debt investments generally are considered speculative and are subject to substantial risks not normally associated with investments in higher quality securities, including adverse business, financial or economic conditions that lead to their issuers&#x2019; payment defaults and insolvency proceedings. In particular, distressed or defaulted obligations might be repaid, if at all, only after lengthy workout or bankruptcy proceedings during which the issuer might not make any interest or other payments, and the Fund may incur additional expenses in its effort to be repaid. If GMO&#x2019;s assessment of the eventual recovery value of a distressed or defaulted debt investment proves incorrect, the Fund may lose a substantial portion or all of its original investment or may be required to accept cash or instruments worth less than its original investment.&lt;/span&gt;</oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="S000089452_MarketRiskFixedIncomeRiskMember"
      id="x_23435f69-0fcb-49f6-8d0e-3316c3b6b038">&lt;span style="color:#000000;font-family:Times New Roman;font-size:8pt;"&gt;&#x25cf;&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-style:italic;"&gt;Market Risk &#x2013; Fixed Income&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; &#x2013; The market price of a fixed income investment can decline due to market-related factors, including rising interest or inflation rates and widening credit spreads, or decreased liquidity due, for example, to market uncertainty about the value of a fixed income investment (or class of fixed income investments). In addition, the market prices of emerging country &lt;/span&gt; &lt;br/&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;sovereign and quasi-sovereign debt investments can decline due to uncertainty about their credit quality and the reliability of their &lt;/span&gt; &lt;br/&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;payment streams.&lt;/span&gt;</oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="S000089452_DerivativesandShortSalesRiskMember"
      id="x_3da9626e-3576-4ea8-8c2f-4ccc12c22023">&lt;span style="color:#000000;font-family:Times New Roman;font-size:8pt;"&gt;&#x25cf;&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-style:italic;"&gt;Derivatives and Short Sales Risk&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; &#x2013; The use of derivatives involves the risk that their value may not change as expected relative to changes in the value of the underlying assets, pools of assets, rates, currencies or indices. Derivatives also present other risks, including market risk, illiquidity risk, currency risk, credit risk, leveraging risk, commodities risk and counterparty risk. The market &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;margin-left:0.00%;"&gt;price of an option is affected by many factors, including changes in the market prices or dividend rates of underlying securities (or in the case of indices, the securities in such indices); the time remaining before expiration; changes in interest rates or exchange rates; and changes in the actual or perceived volatility of the relevant index or underlying securities. The Fund typically creates short investment exposure by selling securities short or by taking a derivative position in which the value of the derivative moves in the opposite direction from the price of an underlying asset, pool of assets, rate, currency or index. Specifically, the net asset value of the Fund&#x2019;s shares will be adversely affected if the securities or other assets that are the subject of the Fund&#x2019;s short exposures appreciate in value. The risk of loss associated with derivatives that provide short investment exposure and short sales of securities &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;is theoretically unlimited.&lt;/span&gt;</oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="S000089452_FuturesContractsRiskMember"
      id="add810a4-f4d6-479d-a628-ed1519aeca87">&lt;span style="color:#000000;font-family:Times New Roman;font-size:8pt;"&gt;&#x25cf;&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-style:italic;"&gt;Futures Contracts Risk&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; &#x2013; The loss to the Fund resulting from its use of futures contracts is potentially unlimited. Futures markets are highly volatile, and the use of futures contracts increases the volatility of the Fund&#x2019;s net asset value. A liquid market may not exist for any particular futures contract at any particular time, and the Fund may be unable when it wishes to terminate its exposure under that contract. When the Fund uses futures contracts for hedging purposes, it runs the risk that changes in the prices of the contracts will not correlate perfectly with changes in the securities, index, or other asset underlying the contracts or movements in the prices of the Fund&#x2019;s investments that are subject to the hedge. In addition, the Fund may be unable to recover or may be delayed in recovering margin or other amounts deposited with a futures commission merchant or futures clearinghouse. Foreign futures contracts are often less liquid and more volatile than U.S. futures contracts.&lt;/span&gt;</oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="S000089452_CounterpartyRiskMember"
      id="x_4f350eca-7b59-4293-8dde-c7a1b495c788">&lt;span style="color:#000000;font-family:Times New Roman;font-size:8pt;"&gt;&#x25cf;&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-style:italic;"&gt;Counterparty Risk&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; &#x2013; The Fund runs the risk that the counterparty to a derivatives contract or a clearing member used by the Fund to hold a cleared derivatives contract is unable or unwilling to make timely settlement payments, return the Fund&#x2019;s collateral or otherwise honor its obligations.&lt;/span&gt;</oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="S000089452_LeveragingRiskMember"
      id="x_88760233-982e-4abf-b1f3-8b2be341f6b1">&lt;span style="color:#000000;font-family:Times New Roman;font-size:8pt;"&gt;&#x25cf;&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-style:italic;"&gt;Leveraging Risk&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; &#x2013; The use of derivatives, short sales and securities lending can create leverage. Leverage increases the Fund&#x2019;s losses when the value of its investments (including derivatives) declines. In addition, the Fund&#x2019;s portfolio will be leveraged if it exercises its right to delay payment on a redemption and the value of the Fund&#x2019;s assets declines between the time a redemption request is treated as being received by the Fund and the time the Fund liquidates assets to fund that redemption.&lt;/span&gt;</oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="S000089452_MarketRiskAssetBackedSecuritiesRiskMember"
      id="x_1b26c6c4-acef-45c3-ae5f-0a87b95c8399">&lt;span style="color:#000000;font-family:Times New Roman;font-size:8pt;"&gt;&#x25cf;&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-style:italic;"&gt;Market Risk &#x2013; Asset-Backed Securities&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; &#x2013; The market price of asset-backed securities, like that of other fixed income investments, can decline for a variety of reasons, including increases in interest rates. In addition, the market price can decrease due to a reduction in or decrease in the reliability of their payment streams. Payment streams associated with asset-backed securities held by the Fund depend on many factors (e.g., the cash flow generated by the assets backing the securities, deal structure, and creditworthiness of any credit-support provider), and a problem in any of these factors can lead to a reduction in the payment stream GMO expected the Fund to receive when the Fund purchased the asset-backed security. The liquidity of asset-backed securities (particularly below investment grade asset-backed securities) may change over time. During periods of deteriorating economic conditions, such as recessions, or periods of rising unemployment, delinquencies and losses generally increase, sometimes dramatically, for asset-backed securities whose underlying assets consist of loans, sales contracts, receivables and other obligations.&lt;/span&gt;</oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="S000089452_IlliquidityRiskMember"
      id="x_2e31a28e-772c-4d6f-9979-8669df07759a">&lt;span style="color:#000000;font-family:Times New Roman;font-size:8pt;"&gt;&#x25cf;&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-style:italic;"&gt;Illiquidity Risk&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; &#x2013; Low trading volume, lack of a market maker, large position size, or legal restrictions increase the risk that the Fund or an underlying fund is limited or prevented from selling particular securities or closing derivative positions at desirable prices at a particular time or at all.&lt;/span&gt;</oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="S000089452_NonUSInvestmentRiskMember"
      id="a526e823-967b-456f-bfc6-5f59b3ee8524">&lt;span style="color:#000000;font-family:Times New Roman;font-size:8pt;"&gt;&#x25cf;&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-style:italic;"&gt;Non-U.S. Investment Risk&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; &#x2013; The market prices of many non-U.S. securities fluctuate more than those of U.S. securities. Many non-U.S. securities markets are less stable, smaller, less liquid, and less regulated than U.S. securities markets, and the cost of trading in those markets often is higher than in U.S. securities markets. In addition, non-U.S. securities issuers often are not subject to as much regulation as U.S. issuers, and the reporting, recordkeeping, accounting, custody, and auditing standards to which those issuers are subject often are not as rigorous as U.S. standards. In addition, the Fund is subject to taxation by countries other than the United States, including potentially on a retroactive basis, on (i) capital gains it realizes or dividends, interest, or other amounts it realizes or accrues in respect of non-U.S. investments; (ii) transactions in those investments; and (iii) repatriation of proceeds generated from the sale or other disposition of those investments.&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; Also, the Fund needs a license to invest directly in securities &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;traded in many non-U.S. securities markets, and the Fund is subject to the risk that its license is terminated or suspended. In some non-U.S. securities markets, prevailing custody and trade settlement practices (e.g., the requirement to pay for securities prior to receipt) expose the Fund to credit and other risks. Further, adverse changes in investment regulations, capital requirements or exchange controls could adversely affect the value of the Fund&#x2019;s investments. The risks above (such as substantial price fluctuations and market instability, illiquidity and lack of regulation) and other risks (e.g., nationalization, expropriation or other confiscation of assets of non-U.S. issuers, difficulties enforcing legal judgments or contractual rights and geopolitical risks) tend to be higher for investments in the securities of issuers tied economically to emerging countries. The economies of emerging countries often depend predominantly on only a few industries or commodities and often are more volatile than the economies of developed countries.&lt;/span&gt;</oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="S000089452_MarketDisruptionandGeopoliticalRiskMember"
      id="x_9808455d-8f50-45fc-b175-891021188bd2">&lt;span style="color:#000000;font-family:Times New Roman;font-size:8pt;"&gt;&#x25cf;&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-style:italic;"&gt;Market Disruption and Geopolitical Risk&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; &#x2013; Geopolitical and other events (e.g., wars, pandemics, sanctions, terrorism, diplomatic tensions, dramatic changes in regulatory and/or foreign policy, cyberattacks, and rapid technological developments such as artificial &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;margin-left:0.00%;"&gt;intelligence) often disrupt securities markets and adversely affect the general economy or particular economies and markets. Those events, as well as other changes in non-U.S. and U.S. economic and political conditions, could exacerbate other risks or otherwise &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;reduce the value of the Fund&#x2019;s investments.&lt;/span&gt;</oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="S000089452_LargeTransactionsRiskMember"
      id="x_7cfe2441-5f2b-45ce-bf19-fe72e885b2e3">&lt;span style="color:#000000;font-family:Times New Roman;font-size:8pt;"&gt;&#x25cf;&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-style:italic;"&gt;Large Transactions Risk&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; &#x2013; To the extent that a large number of shares of the Fund is held by a single shareholder (e.g., an institutional investor or another GMO Fund) or a group of shareholders with a common investment strategy (e.g., GMO asset allocation accounts), the Fund is subject to the risk that a redemption by (or caused by) that shareholder or group will require the Fund to sell investments at disadvantageous prices, disrupt the Fund&#x2019;s operations, lead to temporary overexposure to the Fund&#x2019;s intended investment program or force the Fund&#x2019;s liquidation. The Fund also may be subject to these effects when a number of shareholders collectively redeem or sell a large amount of Fund shares.&lt;/span&gt;</oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="S000089452_CurrencyRiskMember"
      id="fb337032-b406-4678-a566-847afbd013bf">&lt;span style="color:#000000;font-family:Times New Roman;font-size:8pt;"&gt;&#x25cf;&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-style:italic;"&gt;Currency Risk&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; &#x2013; Fluctuations in exchange rates can adversely affect the market value of the Fund&#x2019;s foreign currency holdings and investments denominated in foreign currencies.&lt;/span&gt;</oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="S000089452_FocusedInvestmentRiskMember"
      id="fa5e04bf-7396-4993-925a-da1a5f15280d">&lt;span style="color:#000000;font-family:Times New Roman;font-size:8pt;"&gt;&#x25cf;&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-style:italic;"&gt;Focused Investment Risk&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; &#x2013; Investments in countries, regions, asset classes, sectors, industries, currencies, or issuers that are subject to the same or similar risk factors and investments whose market prices are closely correlated are subject to higher overall risk than investments that are more diversified or whose market prices are not as closely correlated.&lt;/span&gt;</oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="S000089452_ManagementandOperationalRiskMember"
      id="bfded120-0bdb-47a5-808d-465ca50785d8">&lt;span style="color:#000000;font-family:Times New Roman;font-size:8pt;"&gt;&#x25cf;&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-style:italic;"&gt;Management and Operational Risk&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; &#x2013; The Fund runs the risk that GMO&#x2019;s investment techniques will fail to produce intended results.&#160;The Fund also runs the risk that GMO&#x2019;s assessment of an investment, including a security&#x2019;s fundamental fair (or intrinsic) value, is wrong or that deficiencies in GMO&#x2019;s or another service provider&#x2019;s internal systems or controls will cause losses for the Fund or impair Fund operations.&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; GMO uses quantitative models as part of its investment process. GMO&#x2019;s models may not accurately &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;predict future market movements. In addition, GMO&#x2019;s models rely on assumptions and data that are subject to limitations (e.g., inaccuracies, staleness) that could adversely affect their predictive value.&lt;/span&gt;</oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="S000089452_SmallerCompanyRiskMember"
      id="x_31955f21-28e5-4a69-963c-afe834e2008b">&lt;span style="color:#000000;font-family:Times New Roman;font-size:8pt;"&gt;&#x25cf;&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-style:italic;"&gt;Smaller Company Risk&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; &#x2013; Smaller companies may have limited product lines, markets, or financial resources, lack the competitive strength of larger companies, have less experienced managers or depend on a few key employees. The securities of companies with smaller market capitalizations often are less widely held and trade less frequently and in lesser quantities, and their market prices often fluctuate more, than the securities of companies with larger market capitalizations.&lt;/span&gt;</oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="S000089452_FundofFundsRiskMember"
      id="fa6c19bb-f157-436d-ba00-bc269e4a9376">&lt;span style="color:#000000;font-family:Times New Roman;font-size:8pt;"&gt;&#x25cf;&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-style:italic;"&gt;Fund of Funds Risk&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; &#x2013; The Fund is indirectly exposed to all of the risks of an investment in the underlying funds in which it invests, including the risk that those underlying funds will not perform as expected.&lt;/span&gt;</oef:RiskTextBlock>
    <oef:BarChartAndPerformanceTableHeading
      contextRef="S000089452"
      id="x_31b0d15d-2aa5-4a8f-a6bc-a23bdf3a10d0">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-weight:bold;"&gt;Performance&lt;/span&gt;</oef:BarChartAndPerformanceTableHeading>
    <oef:PerformanceNarrativeTextBlock
      contextRef="S000089452"
      id="x_92843067-fe07-412f-a413-f23bce28c5b5">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;margin-left:3.76%;"&gt;Because the Fund had not yet completed a full calendar year of operations as of the date of this Prospectus, performance &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;information for the Fund is not included.&lt;/span&gt;</oef:PerformanceNarrativeTextBlock>
    <oef:PerformanceOneYearOrLess
      contextRef="S000089452"
      id="b381ad79-9c96-4e7b-9ab9-1932555953c6">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;margin-left:3.76%;"&gt;Because the Fund had not yet completed a full calendar year of operations as of the date of this Prospectus, performance &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;information for the Fund is not included.&lt;/span&gt;</oef:PerformanceOneYearOrLess>
    <oef:ObjectiveHeading
      contextRef="S000005489"
      id="x_0eb9a638-8b8b-44f0-8286-9fc688529783">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-weight:bold;"&gt;Investment objective&lt;/span&gt;</oef:ObjectiveHeading>
    <oef:ObjectivePrimaryTextBlock
      contextRef="S000005489"
      id="x_62eb5a9d-ab4a-44b5-b404-f8717afcbdb5">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;margin-left:3.76%;"&gt;Total return greater than that of its benchmark, the GMO Strategic Opportunities Allocation Index, an internally maintained &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;composite index computed by GMO, consisting of 75% MSCI World Index (MSCI Standard Index Series) and 25% Bloomberg U.S. Aggregate Index.&lt;/span&gt;</oef:ObjectivePrimaryTextBlock>
    <oef:ExpenseHeading
      contextRef="S000005489"
      id="f5e8ac47-f9c2-4394-aa69-32001b99d56d">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-weight:bold;"&gt;Fees and expenses&lt;/span&gt;</oef:ExpenseHeading>
    <oef:ExpenseNarrativeTextBlock
      contextRef="S000005489"
      id="ee3360c9-3055-479b-973a-d99995c1227f">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;margin-left:3.76%;"&gt;The table below describes the fees and expenses that you may bear if you buy, hold, and sell shares of the Fund. You may pay &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;other fees, such as brokerage commissions and other fees to financial intermediaries, which are not reflected in the table and example below.&lt;/span&gt;</oef:ExpenseNarrativeTextBlock>
    <oef:OperatingExpensesCaption
      contextRef="S000005489"
      id="x_929f4849-95c5-4f16-88e1-b125bf22ac83">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-weight:bold;"&gt;Annual Fund operating expenses &lt;/span&gt; &lt;br/&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;(expenses that you bear each year as a percentage of the value of your investment)&lt;/span&gt;</oef:OperatingExpensesCaption>
    <oef:ManagementFeesOverAssets
      contextRef="S000005489_C000014937"
      decimals="4"
      id="a97c2406-0502-4f5c-8dfc-52557d64698b"
      unitRef="pure">0.0000</oef:ManagementFeesOverAssets>
    <oef:OtherExpensesOverAssets
      contextRef="S000005489_C000014937"
      decimals="4"
      id="x_0353d976-7a88-40f7-ade2-6791eaeebdc4"
      unitRef="pure">0.0045</oef:OtherExpensesOverAssets>
    <oef:Component1OtherExpensesOverAssets
      contextRef="S000005489_C000014937"
      decimals="4"
      id="x_2c86aa20-d448-495d-a7d3-61696b7ca350"
      unitRef="pure">0.0035</oef:Component1OtherExpensesOverAssets>
    <oef:Component3OtherExpensesOverAssets
      contextRef="S000005489_C000014937"
      decimals="4"
      id="x_755bd4e5-55af-4545-85db-de7c08fd5557"
      unitRef="pure">0.0010</oef:Component3OtherExpensesOverAssets>
    <oef:AcquiredFundFeesAndExpensesOverAssets
      contextRef="S000005489_C000014937"
      decimals="4"
      id="faa69192-78b8-45cc-b90f-d5f80d2ce2c2"
      unitRef="pure">0.0049</oef:AcquiredFundFeesAndExpensesOverAssets>
    <oef:ExpensesOverAssets
      contextRef="S000005489_C000014937"
      decimals="4"
      id="x_4156e9f8-1f58-4951-bea7-172a975587e7"
      unitRef="pure">0.0094</oef:ExpensesOverAssets>
    <oef:FeeWaiverOrReimbursementOverAssets
      contextRef="S000005489_C000014937"
      decimals="4"
      id="x_05b1f354-30c2-4d75-aede-e7cd0e964471"
      unitRef="pure">-0.0010</oef:FeeWaiverOrReimbursementOverAssets>
    <oef:NetExpensesOverAssets
      contextRef="S000005489_C000014937"
      decimals="4"
      id="x_34d2d42a-6d4e-4cd9-af5c-31ceeec59117"
      unitRef="pure">0.0084</oef:NetExpensesOverAssets>
    <oef:FeeWaiverOrReimbursementOverAssetsDateOfTermination
      contextRef="S000005489"
      id="x_5ec5fad3-3184-4b4b-9259-7d1413b6caea">&lt;span style="color:#000000;font-family:Times New Roman;font-size:8pt;font-style:italic;"&gt;June 30, 2026&lt;/span&gt;</oef:FeeWaiverOrReimbursementOverAssetsDateOfTermination>
    <oef:ExpenseExampleHeading
      contextRef="S000005489"
      id="x_4ccb5ae8-c259-4003-ba71-3174baf62686">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-weight:bold;"&gt;Example&lt;/span&gt;</oef:ExpenseExampleHeading>
    <oef:ExpenseExampleNarrativeTextBlock
      contextRef="S000005489"
      id="x_926e6583-40f5-47ab-bb19-b7393d29937a">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;margin-left:3.76%;"&gt;This example is intended to help you compare the cost of investing in the Fund with the cost of investing in other mutual funds. &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;The example assumes that you invest $10,000 in the Fund for the time periods indicated, regardless of whether or not you redeem your shares at the end of such periods. The example also assumes that your investment has a 5% return each year and that the Fund&#x2019;s operating expenses remain the same as those shown in the table. The one year amount shown reflects the expense reimbursement noted in the expense table. Although your actual costs may be higher or lower, based on these assumptions your costs would be:&lt;/span&gt;</oef:ExpenseExampleNarrativeTextBlock>
    <oef:ExpenseExampleYear01
      contextRef="S000005489_C000014937"
      decimals="INF"
      id="x_6f72fbab-7afa-4f1b-8d51-87db2c8435a5"
      unitRef="USD">86</oef:ExpenseExampleYear01>
    <oef:ExpenseExampleYear03
      contextRef="S000005489_C000014937"
      decimals="INF"
      id="x_3af08733-c80e-4535-96a6-306fdedc682d"
      unitRef="USD">290</oef:ExpenseExampleYear03>
    <oef:ExpenseExampleYear05
      contextRef="S000005489_C000014937"
      decimals="INF"
      id="x_6ce54df4-ed22-4cba-9cb6-24b24add9ae5"
      unitRef="USD">510</oef:ExpenseExampleYear05>
    <oef:ExpenseExampleYear10
      contextRef="S000005489_C000014937"
      decimals="INF"
      id="eb925517-acd7-4417-ae7c-1b91b2810dc1"
      unitRef="USD">1146</oef:ExpenseExampleYear10>
    <oef:PortfolioTurnoverHeading
      contextRef="S000005489"
      id="ce1afe31-b753-481e-bad7-4efaf28046b9">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-weight:bold;"&gt;Portfolio turnover&lt;/span&gt;</oef:PortfolioTurnoverHeading>
    <oef:PortfolioTurnoverTextBlock
      contextRef="S000005489"
      id="b21f325a-9a99-47ea-82f0-2b5cfac71b6b">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;margin-left:3.76%;"&gt;The Fund pays transaction costs, such as commissions, when it buys and sells securities. A higher portfolio turnover rate may &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;result in higher transaction costs and, for holders of Fund shares subject to U.S. taxes, higher income taxes. These transaction costs, which are not reflected in Annual Fund operating expenses or in the Example, affect the Fund&#x2019;s performance.&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; During its fiscal year &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;ended February 28, 2025, the Fund&#x2019;s portfolio turnover rate (excluding short-term investments) was &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;83&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;% of the average value of its portfolio securities.&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; That portfolio turnover rate includes investments in U.S. Treasury Fund, which the Fund uses as a short-term &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;investment vehicle for cash management. The Fund&#x2019;s portfolio turnover rate during its fiscal year ended February 28, 2025, excluding transactions in U.S. Treasury Fund and other short-term investments, was 78% of the average value of its portfolio securities.&lt;/span&gt;</oef:PortfolioTurnoverTextBlock>
    <oef:PortfolioTurnoverRate
      contextRef="S000005489"
      decimals="4"
      id="x_2ea601a1-89b4-472f-9fa2-72fa521cca13"
      unitRef="pure">0.83</oef:PortfolioTurnoverRate>
    <oef:StrategyHeading
      contextRef="S000005489"
      id="c1b5326d-f6fe-4277-9ae9-f71dde10d27c">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-weight:bold;"&gt;Principal investment strategies&lt;/span&gt;</oef:StrategyHeading>
    <oef:StrategyNarrativeTextBlock
      contextRef="S000005489"
      id="x_0e1db5f8-c7cd-4eec-835c-943cf3cdcd77">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;margin-left:3.76%;"&gt;The investment strategies GMO pursues for the Fund are intended to complement the strategies it is pursuing for other accounts it &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;manages. Accordingly, the Fund is not intended to serve as a standalone investment.&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;margin-left:3.76%;"&gt;The Fund invests in direct investments, shares of other series of GMO Trust whether now existing or created in the future, &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;including the Equity Funds, the Fixed Income Funds, the Implementation Funds and the Alternative Funds, and shares of GMO-managed exchange-traded funds (collectively, the &#x201c;underlying GMO Funds&#x201d;) (see &#x201c;Additional Information About the Funds&#x2019; Investment Strategies, Risks, and Expenses &#x2014; Asset Allocation Funds&#x201d;). &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;margin-left:3.76%;"&gt;GMO uses its quantitative multi-year forecasts of returns among asset classes, together with its assessment of the relative risks of &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;asset classes, to determine the asset classes in which the Fund invests and how much the Fund invests in each asset class. An important component of those forecasts is GMO&#x2019;s expectation that valuations ultimately revert to their fundamental fair (or intrinsic) value over a complete market cycle. GMO changes the Fund&#x2019;s asset class exposures in response to changes in GMO&#x2019;s investment outlook and its assessment of market valuations and may use redemptions or purchases of Fund shares to rebalance the Fund&#x2019;s investments. The factors GMO considers and investment methods GMO uses can change over time.&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;margin-left:3.76%;"&gt;The Fund is permitted to invest in any asset class (e.g., U.S., non-U.S., and emerging market equity; U.S., non-U.S., and emerging &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;market debt (including asset-backed securities and municipal bonds); and commodities), strategy (e.g., long/short and event-driven strategies), sector, country, or region and at times may have substantial exposure to a single asset class, sector, country, region, issuer, or currency and companies with similar market capitalizations. In addition, the Fund is not restricted in its exposure to any particular market and may invest in securities of companies of any market capitalization and, in the case of debt instruments, of any credit quality (including below investment grade securities, commonly referred to as &#x201c;high yield&#x201d; or &#x201c;junk bonds&#x201d;), maturity and duration. &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;margin-left:3.76%;"&gt;The Fund typically has substantial exposure to derivatives and short-sales. Leverage is not a principal component of the Fund&#x2019;s &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;investment strategy. However, because of its derivative exposure, the Fund may at times have gross investment exposure in excess of its net assets (i.e., the Fund may be leveraged) and, therefore, may be subject to higher risk of loss during those times than if the Fund were not leveraged.&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;margin-left:3.76%;"&gt;In seeking to achieve the Fund&#x2019;s investment objective, GMO may invest a significant portion of the Fund&#x2019;s net assets in cash and &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;cash equivalents. In addition, the Fund may lend its portfolio securities.&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;margin-left:3.76%;"&gt;The Fund also may invest in money market funds unaffiliated with GMO and directly in the types of investments typically held by &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;money market funds.&lt;/span&gt;</oef:StrategyNarrativeTextBlock>
    <oef:RiskTextBlock
      contextRef="S000005489_RiskLoseMoneyMember"
      id="eadaa4f6-4cc4-4699-bdf0-22ff552092a7">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;Many factors can affect this value, and you may lose money by investing in the Fund.&lt;/span&gt;</oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="S000005489_RiskNotInsuredDepositoryInstitutionMember"
      id="eea4708f-abc5-475c-9f46-ee43dbbb911e">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;An investment in the Fund is not a bank deposit and is not insured or guaranteed by the FDIC or &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;any government agency.&lt;/span&gt;</oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="S000005489_ManagementandOperationalRiskMember"
      id="x_0c45391d-04db-4e6b-bb35-473c8754ef42">&lt;span style="color:#000000;font-family:Times New Roman;font-size:8pt;"&gt;&#x25cf;&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-style:italic;"&gt;Management and Operational Risk&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; &#x2013; The Fund runs the risk that GMO&#x2019;s investment techniques will fail to produce intended results.&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;GMO uses quantitative models as part of its investment process. GMO&#x2019;s models may not accurately predict future market movements. In addition, GMO&#x2019;s models rely on assumptions and data that are subject to limitations (e.g., inaccuracies, staleness) that could adversely affect their predictive value.&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; The Fund also runs the risk that GMO&#x2019;s assessment of an investment, including a &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;security&#x2019;s fundamental fair (or intrinsic) value, is wrong or that deficiencies in GMO&#x2019;s or another service provider&#x2019;s internal systems or controls will cause losses for the Fund or impair Fund operations.&lt;/span&gt;</oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="S000005489_MarketRiskEquitiesRiskMember"
      id="x_915e7619-2148-4692-83cd-39a10c98868c">&lt;span style="color:#000000;font-family:Times New Roman;font-size:8pt;"&gt;&#x25cf;&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-style:italic;"&gt;Market Risk &#x2013; Equities &#x2013; &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;The market price of an equity in the Fund&#x2019;s portfolio may decline due to factors affecting the issuer or its industry or the economy and equity markets generally. If the Fund purchases an equity for less than its fundamental fair (or intrinsic) value as assessed by GMO, the Fund runs the risk that the market price of the equity will not appreciate or will decline (for example, if GMO&#x2019;s assessment proves to be incorrect or the market fails to recognize the equity&#x2019;s intrinsic value). The Fund also may purchase equities that typically trade at higher multiples of current earnings than other securities, and the market prices of these equities often are more sensitive to changes in future earnings expectations and interest rates than the market prices of equities trading at lower multiples. Declines in stock market prices generally are likely to reduce the net asset value of the Fund&#x2019;s shares.&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;When the Fund writes put options on a stock index, the value of those options will decline when the value of that index declines. The value of an index depends on the value of the equity securities in the index. Also, the Fund&#x2019;s investment strategy of writing put options on stock indices can be expected to cause that strategy to underperform relative to those indices when the value of those indices rises sharply.&lt;/span&gt;</oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="S000005489_NonUSInvestmentRiskMember"
      id="x_8270a77e-df2c-4fd2-af0d-388b36b02af9">&lt;span style="color:#000000;font-family:Times New Roman;font-size:8pt;"&gt;&#x25cf;&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-style:italic;"&gt;Non-U.S. Investment Risk&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; &#x2013; The market prices of many non-U.S. securities fluctuate more than those of U.S. securities. Many non-U.S. securities markets are less stable, smaller, less liquid, and less regulated than U.S. securities markets, and the cost of trading in those markets often is higher than in U.S. securities markets. In addition, non-U.S. securities issuers often are not subject to as much &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;margin-left:0.00%;"&gt;regulation as U.S. issuers, and the reporting, recordkeeping, accounting, custody, and auditing standards to which those issuers are subject often are not as rigorous as U.S. standards. In addition, the Fund is subject to taxation by countries other than the United States, including potentially on a retroactive basis, on (i) capital gains it realizes or dividends, interest, or other amounts it realizes or accrues in respect of non-U.S. investments; (ii) transactions in those investments; and (iii) repatriation of proceeds generated from the sale or other disposition of those investments.&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; Also, the Fund needs a license to invest directly in securities &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;margin-left:0.00%;"&gt;traded in many non-U.S. securities markets, and the Fund is subject to the risk that its license is terminated or suspended. In some non-U.S. securities markets, prevailing custody and trade settlement practices (e.g., the requirement to pay for securities prior to receipt) expose the Fund to credit and other risks. Further, adverse changes in investment regulations, capital requirements or exchange controls could adversely affect the value of the Fund&#x2019;s investments. The risks above (such as substantial price fluctuations and market instability, illiquidity and lack of regulation) and other risks (e.g., nationalization, expropriation or other confiscation of assets of non-U.S. issuers, difficulties enforcing legal judgments or contractual rights and geopolitical risks) tend to be higher for investments in the securities of issuers tied economically to emerging countries. The economies of emerging countries often depend &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;predominantly on only a few industries or commodities and often are more volatile than the economies of developed countries.&lt;/span&gt;</oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="S000005489_MarketRiskFixedIncomeRiskMember"
      id="x_415193c0-d210-480d-a085-ff029ce2989a">&lt;span style="color:#000000;font-family:Times New Roman;font-size:8pt;"&gt;&#x25cf;&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-style:italic;"&gt;Market Risk &#x2013; Fixed Income&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; &#x2013; The market price of a fixed income investment can decline due to market-related factors, including rising interest or inflation rates and widening credit spreads, or decreased liquidity due, for example, to market uncertainty about the value of a fixed income investment (or class of fixed income investments).&lt;/span&gt;</oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="S000005489_DerivativesandShortSalesRiskMember"
      id="b7fe794d-3be9-48b0-8d5a-f242b688b42a">&lt;span style="color:#000000;font-family:Times New Roman;font-size:8pt;"&gt;&#x25cf;&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-style:italic;"&gt;Derivatives and Short Sales Risk&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; &#x2013; The use of derivatives involves the risk that their value may not change as expected relative to changes in the value of the underlying assets, pools of assets, rates, currencies or indices. Derivatives also present other risks, including market risk, illiquidity risk, currency risk, credit risk, leveraging risk, commodities risk and counterparty risk. The market price of an option is affected by many factors, including changes in the market prices or dividend rates of underlying securities (or in the case of indices, the securities in such indices); the time remaining before expiration; changes in interest rates or exchange rates; and changes in the actual or perceived volatility of the relevant index or underlying securities. The Fund typically creates short investment exposure by selling securities short or by taking a derivative position in which the value of the derivative moves in the opposite direction from the price of an underlying asset, pool of assets, rate, currency or index. Specifically, the net asset value of the Fund&#x2019;s shares will be adversely affected if the securities or other assets that are the subject of the Fund&#x2019;s short exposures appreciate in value. The risk of loss associated with derivatives that provide short investment exposure and short sales of securities is theoretically unlimited.&lt;/span&gt;</oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="S000005489_FuturesContractsRiskMember"
      id="bf93493f-aa7f-4268-885a-2e077f6d5e44">&lt;span style="color:#000000;font-family:Times New Roman;font-size:8pt;"&gt;&#x25cf;&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-style:italic;"&gt;Futures Contracts Risk&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; &#x2013; The loss to the Fund resulting from its use of futures contracts is potentially unlimited. Futures markets are highly volatile, and the use of futures contracts increases the volatility of the Fund&#x2019;s net asset value. A liquid market may not exist for any particular futures contract at any particular time, and the Fund may be unable when it wishes to terminate its exposure under that contract. When the Fund uses futures contracts for hedging purposes, it runs the risk that changes in the prices of the contracts will not correlate perfectly with changes in the securities, index, or other asset underlying the contracts or movements in the prices of the Fund&#x2019;s investments that are subject to the hedge. In addition, the Fund may be unable to recover or may be delayed in recovering margin or other amounts deposited with a futures commission merchant or futures clearinghouse. Foreign futures contracts are often less liquid and more volatile than U.S. futures contracts.&lt;/span&gt;</oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="S000005489_CreditRiskMember"
      id="x_4c6fd241-a109-44ac-9e86-0f2bae90e25b">&lt;span style="color:#000000;font-family:Times New Roman;font-size:8pt;"&gt;&#x25cf;&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-style:italic;"&gt;Credit Risk&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; &#x2013; The Fund runs the risk that the issuer or guarantor of a fixed income investment (including a sovereign or quasi-sovereign debt issuer) or the obligor of an obligation underlying an asset-backed security will be unable or unwilling to satisfy its obligation to pay principal and interest or otherwise to honor its obligations in a timely manner or at all. The market price of a fixed income investment will normally decline as a result of the failure of an issuer, guarantor, or obligor to meet its payment obligations or in anticipation of such a failure. Below investment grade investments (commonly referred to as high yield or &#x201c;junk&#x201d; bonds) have speculative characteristics and are subject to greater credit risk than other fixed income investments. Negative changes in economic conditions or other circumstances are more likely to impair the ability of issuers of below investment grade investments to make principal and interest payments than issuers of investment grade investments.&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; In addition, investments in emerging country sovereign &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;or quasi-sovereign debt are subject to a heightened risk that the issuer responsible for repayment of the debt may be unable or unwilling to pay interest and repay principal when due, and the Fund may lack recourse against the issuer in the event of a default. Investments in quasi-sovereign debt also are subject to the risk that the issuer will default independently of its sovereign.&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;Investments in distressed or defaulted or other low quality debt investments generally are considered speculative and are subject to substantial risks not normally associated with investments in higher quality securities, including adverse business, financial or economic conditions that lead to their issuers&#x2019; payment defaults and insolvency proceedings. In particular, distressed or defaulted obligations might be repaid, if at all, only after lengthy workout or bankruptcy proceedings during which the issuer might not make any interest or other payments, and the Fund may incur additional expenses in its effort to be repaid. If GMO&#x2019;s assessment of the eventual recovery value of a distressed or defaulted debt investment proves incorrect, the Fund may lose a substantial portion or all of its original investment or may be required to accept cash or instruments worth less than its original investment.&lt;/span&gt;</oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="S000005489_CurrencyRiskMember"
      id="x_70968d01-78cd-4581-8ec3-a415ae3d247a">&lt;span style="color:#000000;font-family:Times New Roman;font-size:8pt;"&gt;&#x25cf;&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-style:italic;"&gt;Currency Risk&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; &#x2013; Fluctuations in exchange rates can adversely affect the market value of the Fund&#x2019;s foreign currency holdings and investments denominated in foreign currencies.&lt;/span&gt;</oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="S000005489_FundofFundsRiskMember"
      id="fa1dffde-4f4b-44fd-a000-62eff305ec6f">&lt;span style="color:#000000;font-family:Times New Roman;font-size:8pt;"&gt;&#x25cf;&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-style:italic;"&gt;Fund of Funds Risk&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; &#x2013; The Fund is indirectly exposed to all of the risks of an investment in the underlying funds in which it invests, including the risk that those underlying funds will not perform as expected. The fees and expenses associated with an investment in the Fund are less predictable than those associated with an investment in funds that charge a fixed management fee.&lt;/span&gt;</oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="S000005489_CommoditiesRiskMember"
      id="x_3794d6fc-d4af-4a75-812a-840bc08c8dc1">&lt;span style="color:#000000;font-family:Times New Roman;font-size:8pt;"&gt;&#x25cf;&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-style:italic;"&gt;Commodities Risk&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; &#x2013; Commodity prices can be extremely volatile, and exposure to commodities can cause the net asset value of the Fund&#x2019;s shares to decline or fluctuate significantly.&lt;/span&gt;</oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="S000005489_EventDrivenRiskMember"
      id="x_344bbf1e-8e73-4f03-a84e-4cd941287eb9">&lt;span style="color:#000000;font-family:Times New Roman;font-size:8pt;"&gt;&#x25cf;&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-style:italic;"&gt;Event-Driven Risk&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; &#x2013; If the Fund purchases securities in anticipation of a proposed merger, acquisition, exchange offer, tender offer, or other similar transaction and that transaction later appears likely to be delayed or unlikely to be consummated or, in fact, is not consummated or is delayed, the market price of the securities purchased by the Fund may decline sharply, resulting in losses to the Fund. The risk/reward payout of event-driven strategies (such as merger arbitrage) typically is asymmetric, with the losses in failed transactions often far exceeding the gains in successful transactions. Event-driven strategies are subject to the risk of overall market movements, and the Fund may experience losses even if a transaction is consummated.&lt;/span&gt;</oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="S000005489_IlliquidityRiskMember"
      id="x_48e36611-788c-4a52-a523-f13c85cf8257">&lt;span style="color:#000000;font-family:Times New Roman;font-size:8pt;"&gt;&#x25cf;&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-style:italic;"&gt;Illiquidity Risk&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; &#x2013; Low trading volume, lack of a market maker, large position size, or legal restrictions increase the risk that the Fund or an underlying fund is limited or prevented from selling particular securities or closing derivative positions at desirable prices at a particular time or at all.&lt;/span&gt;</oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="S000005489_LeveragingRiskMember"
      id="x_4e93397b-7a74-45e6-afc0-9b165c9f4098">&lt;span style="color:#000000;font-family:Times New Roman;font-size:8pt;"&gt;&#x25cf;&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-style:italic;"&gt;Leveraging Risk&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; &#x2013; The use of derivatives, short sales and securities lending can create leverage. Leverage increases the Fund&#x2019;s losses when the value of its investments (including derivatives) declines. In addition, the Fund&#x2019;s portfolio will be leveraged if it exercises its right to delay payment on a redemption and the value of the Fund&#x2019;s assets declines between the time a redemption request is treated as being received by the Fund and the time the Fund liquidates assets to fund that redemption.&lt;/span&gt;</oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="S000005489_CounterpartyRiskMember"
      id="x_30bad876-4b73-4c67-86c7-a94e5a57f9b0">&lt;span style="color:#000000;font-family:Times New Roman;font-size:8pt;"&gt;&#x25cf;&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-style:italic;"&gt;Counterparty Risk&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; &#x2013; The Fund runs the risk that the counterparty to a derivatives contract or a clearing member used by the Fund to hold a cleared derivatives contract is unable or unwilling to make timely settlement payments, return the Fund&#x2019;s collateral or otherwise honor its obligations.&lt;/span&gt;</oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="S000005489_SmallerCompanyRiskMember"
      id="x_41ea777d-dc10-4b53-9ff0-39372ffffa84">&lt;span style="color:#000000;font-family:Times New Roman;font-size:8pt;"&gt;&#x25cf;&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-style:italic;"&gt;Smaller Company Risk&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; &#x2013; Smaller companies may have limited product lines, markets, or financial resources, lack the competitive strength of larger companies, have less experienced managers or depend on a few key employees. The securities of companies with smaller market capitalizations often are less widely held and trade less frequently and in lesser quantities, and their market prices often fluctuate more, than the securities of companies with larger market capitalizations.&lt;/span&gt;</oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="S000005489_MarketDisruptionandGeopoliticalRiskMember"
      id="x_13b6bf53-2479-47bf-95d3-2dbe5921f82c">&lt;span style="color:#000000;font-family:Times New Roman;font-size:8pt;"&gt;&#x25cf;&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-style:italic;"&gt;Market Disruption and Geopolitical Risk&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; &#x2013; Geopolitical and other events (e.g., wars, pandemics, sanctions, terrorism, diplomatic tensions, dramatic changes in regulatory and/or foreign policy, cyberattacks, and rapid technological developments such as artificial intelligence) often disrupt securities markets and adversely affect the general economy or particular economies and markets. Those events, as well as other changes in non-U.S. and U.S. economic and political conditions, could exacerbate other risks or otherwise reduce the value of the Fund&#x2019;s investments.&lt;/span&gt;</oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="S000005489_MarketRiskAssetBackedSecuritiesRiskMember"
      id="x_91ba2836-8b6f-44b1-a111-3c3ce25a11a0">&lt;span style="color:#000000;font-family:Times New Roman;font-size:8pt;"&gt;&#x25cf;&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-style:italic;"&gt;Market Risk &#x2013; Asset-Backed Securities&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; &#x2013; The market price of asset-backed securities, like that of other fixed income investments, can decline for a variety of reasons, including increases in interest rates. In addition, the market price can decrease due to a reduction in or decrease in the reliability of their payment streams. Payment streams associated with asset-backed securities held by the Fund depend on many factors (e.g., the cash flow generated by the assets backing the securities, deal structure, and creditworthiness of any credit-support provider), and a problem in any of these factors can lead to a reduction in the payment stream GMO expected the Fund to receive when the Fund purchased the asset-backed security. The liquidity of asset-backed securities (particularly below investment grade asset-backed securities) may change over time. During periods of deteriorating economic conditions, such as recessions, or periods of rising unemployment, delinquencies and losses generally increase, sometimes dramatically, for asset-backed securities whose underlying assets consist of loans, sales contracts, receivables and other obligations.&lt;/span&gt;</oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="S000005489_FocusedInvestmentRiskMember"
      id="x_97f73a5f-d604-4143-93d3-27b422b2c100">&lt;span style="color:#000000;font-family:Times New Roman;font-size:8pt;"&gt;&#x25cf;&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-style:italic;"&gt;Focused Investment Risk&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; &#x2013; Investments in countries, regions, asset classes, sectors, industries, currencies, or issuers that are subject to the same or similar risk factors and investments whose market prices are closely correlated are subject to higher overall risk than investments that are more diversified or whose market prices are not as closely correlated.&lt;/span&gt;</oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="S000005489_LargeTransactionsRiskMember"
      id="x_020bfb6e-b763-4d41-b6c9-53fce34c6136">&lt;span style="color:#000000;font-family:Times New Roman;font-size:8pt;"&gt;&#x25cf;&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-style:italic;"&gt;Large Transactions Risk&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; &#x2013; To the extent that a large number of shares of the Fund is held by a single shareholder (e.g., an institutional investor or another GMO Fund) or a group of shareholders with a common investment strategy (e.g., GMO asset allocation accounts), the Fund is subject to the risk that a redemption by (or caused by) that shareholder or group will require the Fund to sell investments at disadvantageous prices, disrupt the Fund&#x2019;s operations, lead to temporary overexposure to the Fund&#x2019;s intended investment program or force the Fund&#x2019;s liquidation. The Fund also may be subject to these effects when a number of shareholders collectively redeem or sell a large amount of Fund shares.&lt;/span&gt;</oef:RiskTextBlock>
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      contextRef="S000005489_ValueInvestingRiskMember"
      id="x_765885d0-9029-443b-bc57-3242a977a829">&lt;span style="color:#000000;font-family:Times New Roman;font-size:8pt;"&gt;&#x25cf;&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-style:italic;"&gt;Value Investing Risk&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; &#x2013; Issuers whose securities GMO believes are undervalued may not realize their business potential, may never be recognized by the market as being undervalued and/or may be appropriately priced notwithstanding GMO&#x2019;s assessment. These and other factors may cause the price of value stocks to decline, resulting in losses to the Fund.&lt;/span&gt;</oef:RiskTextBlock>
    <oef:BarChartAndPerformanceTableHeading
      contextRef="S000005489"
      id="fc6ae634-da3e-4aa9-b9b2-d3e0a8b24c5f">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-weight:bold;"&gt;Performance&lt;/span&gt;</oef:BarChartAndPerformanceTableHeading>
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      contextRef="S000005489"
      id="x_095723b9-80c4-49e5-a5a8-e21b5dd4e1e8">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;margin-left:3.76%;"&gt;The bar chart and table below provide some indication of the risks of investing in the Fund by showing changes in the Fund&#x2019;s &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;annual total returns from year to year for the periods indicated and by comparing the Fund&#x2019;s average annual total returns for different calendar periods with those of the Fund&#x2019;s benchmark (a composite index computed by GMO) and two broad-based securities market indices.&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; After-tax returns are calculated using the historical highest individual federal marginal income tax rates and do not reflect the &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;impact of state and local taxes.&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; Actual after-tax returns depend on your tax situation and may differ from those shown. After-tax returns &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;shown are not relevant if you are tax-exempt or if you hold your Fund shares through tax-advantaged arrangements (such as a 401(k) plan or individual retirement account).&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; Past performance (before and after taxes) is not an indication of future performance.&lt;/span&gt;</oef:PerformanceNarrativeTextBlock>
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      contextRef="S000005489"
      id="a1ae32b5-6869-45f3-bf49-b65eaea854d3">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;margin-left:3.76%;"&gt;The bar chart and table below provide some indication of the risks of investing in the Fund by showing changes in the Fund&#x2019;s &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;annual total returns from year to year for the periods indicated and by comparing the Fund&#x2019;s average annual total returns for different calendar periods with those of the Fund&#x2019;s benchmark (a composite index computed by GMO) and two broad-based securities market indices.&lt;/span&gt;</oef:PerformanceInformationIllustratesVariabilityOfReturns>
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      id="e21ef9b2-7267-4df9-985b-82929c3a8997">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; After-tax returns are calculated using the historical highest individual federal marginal income tax rates and do not reflect the &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;impact of state and local taxes.&lt;/span&gt;</oef:PerformanceTableUsesHighestFederalRate>
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      id="x_0b777722-b869-44f2-8b75-b2d1962d4324">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; Actual after-tax returns depend on your tax situation and may differ from those shown. After-tax returns &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;shown are not relevant if you are tax-exempt or if you hold your Fund shares through tax-advantaged arrangements (such as a 401(k) plan or individual retirement account).&lt;/span&gt;</oef:PerformanceTableNotRelevantToTaxDeferred>
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      id="x_05a984b4-67c0-405d-8fb9-7aa04b537fd9">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; Past performance (before and after taxes) is not an indication of future performance.&lt;/span&gt;</oef:PerformancePastDoesNotIndicateFuture>
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      id="c666231c-5bf3-4632-9c11-00d36258a32f">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-weight:bold;"&gt;Annual Total Returns/Class III Shares&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:6.5pt;font-weight:bold;position:relative;top:-2.75pt;"&gt;1&lt;/span&gt; &lt;br/&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;Years Ending December 31&lt;/span&gt;</oef:BarChartHeading>
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      id="x_254f22ca-c6bd-4034-9597-9fa368cfe932">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;Highest Quarter:&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;13.34%&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;-sec-ix-hidden:a73d5323-c45c-412a-8b6f-2767977d4c38"&gt;2Q 2020&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;Lowest Quarter:&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;-20.14%&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;-sec-ix-hidden:x_5d25f364-743e-4938-85a0-a6cd244290cd"&gt;1Q 2020&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;Year-to-Date:&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;3.46%&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;As of&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;3/31/2025&lt;/span&gt;</oef:BarChartClosingTextBlock>
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      id="x_63d98a74-6025-4903-a0dc-0cdd35dd3ed7">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;Highest Quarter:&lt;/span&gt;</oef:HighestQuarterlyReturnLabel>
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      contextRef="S000005489_C000014937"
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      unitRef="pure">0.1334</oef:BarChartHighestQuarterlyReturn>
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      id="f4c84f2a-3df3-4044-abfc-fdb9d5ca0d76">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;Lowest Quarter:&lt;/span&gt;</oef:LowestQuarterlyReturnLabel>
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      id="e41a2b0b-251f-4848-b501-a79244f9c205"
      unitRef="pure">-0.2014</oef:BarChartLowestQuarterlyReturn>
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      id="x_6b153bc4-afa8-483d-84b2-86700ebdd415">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;Year-to-Date:&lt;/span&gt;</oef:YearToDateReturnLabel>
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      contextRef="S000005489_C000014937"
      decimals="4"
      id="x_526c0e1a-2c31-4587-9b00-16cffbd3f078"
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      contextRef="S000005489_C000014937"
      id="b4952e1c-6d93-470e-98d3-d6f991527910">2025-03-31</oef:BarChartYearToDateReturnDate>
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      contextRef="S000005489"
      id="ead7383d-1c82-4751-979a-46ff3ffff9df">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-weight:bold;"&gt;Average Annual Total Returns&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:6.5pt;font-weight:bold;position:relative;top:-2.75pt;"&gt;1&lt;/span&gt; &lt;br/&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;Periods Ending December 31, 2024&lt;/span&gt;</oef:PerformanceTableHeading>
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      contextRef="C000014937"
      id="x_0d4bce48-ee91-4970-afd3-973f84b73dcd">2005-05-31</oef:PerfInceptionDate>
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      decimals="4"
      id="d7a39948-d825-423f-b2a3-124a48b38acf"
      unitRef="pure">0.0550</oef:AvgAnnlRtrPct>
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      decimals="4"
      id="bb44d642-29f5-4986-8462-28ef049829a4"
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      decimals="4"
      id="x_9d8a82f4-f703-41e0-9101-2ec84fd85635"
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      id="x_73b14d18-f3e5-4c54-b9c9-2b5bce0f9cc4"
      unitRef="pure">0.0655</oef:AvgAnnlRtrPct>
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      decimals="4"
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      unitRef="pure">0.0480</oef:AvgAnnlRtrPct>
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    <oef:ObjectiveHeading
      contextRef="S000025186"
      id="b0e73f8b-675a-46b1-a851-102fbb7e28c8">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-weight:bold;"&gt;Investment objective&lt;/span&gt;</oef:ObjectiveHeading>
    <oef:ObjectivePrimaryTextBlock
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      id="x_9a74d0ff-df82-4ad2-b06b-4db6cf3da21f">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;Liquidity and safety of principal with current income as a secondary objective.&lt;/span&gt;</oef:ObjectivePrimaryTextBlock>
    <oef:ExpenseHeading
      contextRef="S000025186"
      id="fcb61e18-4487-4727-a992-10aacb93a6c9">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-weight:bold;"&gt;Fees and expenses&lt;/span&gt;</oef:ExpenseHeading>
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      contextRef="S000025186"
      id="ca95be4b-f9c2-465e-99cb-ceed66638162">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;margin-left:3.76%;"&gt;The table below describes the fees and expenses that you may bear if you buy, hold, and sell shares of the Fund. You may pay &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;other fees, such as brokerage commissions and other fees to financial intermediaries, which are not reflected in the table and example below.&lt;/span&gt;</oef:ExpenseNarrativeTextBlock>
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      id="cb10e1a0-9b5b-4478-9379-75057ec16539">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-weight:bold;"&gt;Annual Fund operating expenses &lt;/span&gt; &lt;br/&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;(expenses that you bear each year as a percentage of the value of your investment)&lt;/span&gt;</oef:OperatingExpensesCaption>
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      decimals="4"
      id="ad0fff5a-7cb8-4e9c-b5e9-339e86d4e3ff"
      unitRef="pure">0.0008</oef:ManagementFeesOverAssets>
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      decimals="4"
      id="x_6c53bff4-85b5-45c3-832f-733cb45c1752"
      unitRef="pure">0.0008</oef:ManagementFeesOverAssets>
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      contextRef="S000025186_C000251143"
      decimals="4"
      id="x_45636dc4-dc49-4496-940b-2e0a82fb8a23"
      unitRef="pure">0.0008</oef:ManagementFeesOverAssets>
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      decimals="4"
      id="x_75b7e104-533e-4c3c-bf47-fc2cf7ab3293"
      unitRef="pure">0.0005</oef:OtherExpensesOverAssets>
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      contextRef="S000025186_C000251142"
      decimals="4"
      id="b0908b45-ad39-482c-80d5-d097ea413c72"
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      contextRef="S000025186_C000251143"
      decimals="4"
      id="x_3dc3dada-24ac-411a-8289-b1160737cb46"
      unitRef="pure">0.0017</oef:OtherExpensesOverAssets>
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      decimals="4"
      id="x_2c0832dd-4b5c-44a9-b58c-4ff730326508"
      unitRef="pure">0.0013</oef:ExpensesOverAssets>
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      decimals="4"
      id="d21f1f35-1f6f-4cc9-a4f9-535cbbb938ca"
      unitRef="pure">0.0013</oef:ExpensesOverAssets>
    <oef:ExpensesOverAssets
      contextRef="S000025186_C000251143"
      decimals="4"
      id="caba45d1-5390-4038-a454-338fcbb907bc"
      unitRef="pure">0.0025</oef:ExpensesOverAssets>
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      id="x_121ff569-b827-4042-9850-c95d575f9efd"
      unitRef="pure">-0.0004</oef:FeeWaiverOrReimbursementOverAssets>
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      contextRef="S000025186_C000251143"
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      id="x_1fe771c5-bbf7-494e-9433-ab4a119a361f"
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    <oef:NetExpensesOverAssets
      contextRef="S000025186_C000075084"
      decimals="4"
      id="x_68613e26-9228-4d6f-89ec-dd032a58daab"
      unitRef="pure">0.0009</oef:NetExpensesOverAssets>
    <oef:NetExpensesOverAssets
      contextRef="S000025186_C000251142"
      decimals="4"
      id="x_609bc79a-518e-4bc7-9ec7-6a2301b25dec"
      unitRef="pure">0.0009</oef:NetExpensesOverAssets>
    <oef:NetExpensesOverAssets
      contextRef="S000025186_C000251143"
      decimals="4"
      id="x_7a623215-4781-4a57-a9d8-9b5ca90ff051"
      unitRef="pure">0.0021</oef:NetExpensesOverAssets>
    <oef:FeeWaiverOrReimbursementOverAssetsDateOfTermination
      contextRef="S000025186"
      id="x_86b2e0a5-c027-4f70-8d63-9a4e0e4665ef">&lt;span style="color:#000000;font-family:Times New Roman;font-size:8pt;font-style:italic;"&gt;June 30, 2026&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:8pt;font-style:italic;"&gt;June 30, 2026&lt;/span&gt;</oef:FeeWaiverOrReimbursementOverAssetsDateOfTermination>
    <oef:ExpenseExampleHeading
      contextRef="S000025186"
      id="d8a02033-b40e-4db0-8613-e1fd42211883">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-weight:bold;"&gt;Example&lt;/span&gt;</oef:ExpenseExampleHeading>
    <oef:ExpenseExampleNarrativeTextBlock
      contextRef="S000025186"
      id="x_3ac4ec50-6fd5-41d0-8aaa-d28f80ab9f9b">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;margin-left:3.76%;"&gt;This example is intended to help you compare the cost of investing in the Fund with the cost of investing in other mutual funds. &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;The example assumes that you invest $10,000 in the Fund for the time periods indicated, regardless of whether or not you redeem your shares at the end of such periods. The example also assumes that your investment has a 5% return each year and that the Fund&#x2019;s operating expenses remain the same as those shown in the table. The one year amount shown reflects the expense reimbursement and waiver noted in the expense table. Although your actual costs may be higher or lower, based on these assumptions your costs would be:&lt;/span&gt;</oef:ExpenseExampleNarrativeTextBlock>
    <oef:ExpenseExampleYear01
      contextRef="S000025186_C000075084"
      decimals="INF"
      id="f4daaf6b-124b-4831-9a52-4c8b69f5dd70"
      unitRef="USD">9</oef:ExpenseExampleYear01>
    <oef:ExpenseExampleYear03
      contextRef="S000025186_C000075084"
      decimals="INF"
      id="b92a5d50-ca5c-4950-a6f8-e3e9ed3e8595"
      unitRef="USD">38</oef:ExpenseExampleYear03>
    <oef:ExpenseExampleYear05
      contextRef="S000025186_C000075084"
      decimals="INF"
      id="b1f4a4c3-5daa-4787-a14e-7e6b30a4f1a5"
      unitRef="USD">69</oef:ExpenseExampleYear05>
    <oef:ExpenseExampleYear10
      contextRef="S000025186_C000075084"
      decimals="INF"
      id="x_53750966-7665-4a9d-a389-11e9a22551ae"
      unitRef="USD">162</oef:ExpenseExampleYear10>
    <oef:ExpenseExampleYear01
      contextRef="S000025186_C000251142"
      decimals="INF"
      id="x_4140a501-0db9-429b-ba33-2342cd6b89e8"
      unitRef="USD">9</oef:ExpenseExampleYear01>
    <oef:ExpenseExampleYear03
      contextRef="S000025186_C000251142"
      decimals="INF"
      id="dd788896-e8df-4aeb-b7d4-f868e82be9b1"
      unitRef="USD">38</oef:ExpenseExampleYear03>
    <oef:ExpenseExampleYear05
      contextRef="S000025186_C000251142"
      decimals="INF"
      id="x_332be43a-3eb2-4fae-b895-de28fe790fe3"
      unitRef="USD">69</oef:ExpenseExampleYear05>
    <oef:ExpenseExampleYear10
      contextRef="S000025186_C000251142"
      decimals="INF"
      id="x_149dc65a-378c-4ddf-bd79-229dcabd4ccd"
      unitRef="USD">162</oef:ExpenseExampleYear10>
    <oef:ExpenseExampleYear01
      contextRef="S000025186_C000251143"
      decimals="INF"
      id="eefe45d3-d64e-4064-a53d-48cf5079b935"
      unitRef="USD">22</oef:ExpenseExampleYear01>
    <oef:ExpenseExampleYear03
      contextRef="S000025186_C000251143"
      decimals="INF"
      id="x_9c5e1b8c-a109-4d03-81de-c3982129487e"
      unitRef="USD">76</oef:ExpenseExampleYear03>
    <oef:ExpenseExampleYear05
      contextRef="S000025186_C000251143"
      decimals="INF"
      id="x_3cd6b554-4e0c-49be-a18f-122b4935dc78"
      unitRef="USD">137</oef:ExpenseExampleYear05>
    <oef:ExpenseExampleYear10
      contextRef="S000025186_C000251143"
      decimals="INF"
      id="b43af9ba-afcf-4eab-b984-23c1857472bb"
      unitRef="USD">314</oef:ExpenseExampleYear10>
    <oef:PortfolioTurnoverHeading
      contextRef="S000025186"
      id="x_97e77e73-eac1-4587-b5ab-c4abaa61f1d1">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-weight:bold;"&gt;Portfolio turnover&lt;/span&gt;</oef:PortfolioTurnoverHeading>
    <oef:PortfolioTurnoverTextBlock
      contextRef="S000025186"
      id="x_6b281df9-7fd1-46d1-903a-99af6889cdf8">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;margin-left:3.76%;"&gt;The Fund pays transaction costs, such as commissions, when it buys and sells securities. A higher portfolio turnover rate may &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;result in higher transaction costs and, for holders of Fund shares subject to U.S. taxes, higher income taxes. These transaction costs, which are not reflected in Annual Fund operating expenses or in the Example, affect the Fund&#x2019;s performance.&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; During its fiscal year &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;ended February 28, 2025, the Fund&#x2019;s portfolio turnover rate (excluding short-term investments) was &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;0&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;% of the average value of its portfolio securities.&lt;/span&gt;</oef:PortfolioTurnoverTextBlock>
    <oef:PortfolioTurnoverRate
      contextRef="S000025186"
      decimals="4"
      id="x_313cc97d-2996-4ec5-9049-b9e1d09985e9"
      unitRef="pure">0</oef:PortfolioTurnoverRate>
    <oef:StrategyHeading
      contextRef="S000025186"
      id="d30743cb-8c84-460b-b11d-457572b9b7a1">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-weight:bold;"&gt;Principal investment strategies&lt;/span&gt;</oef:StrategyHeading>
    <oef:StrategyNarrativeTextBlock
      contextRef="S000025186"
      id="b46be0bd-74ce-4894-bca9-c96fe35e184d">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;margin-left:3.76%;"&gt;Under normal circumstances, the Fund invests at least 80% of its assets in Direct U.S. Treasury Obligations and repurchase &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;agreements collateralized by these Obligations (see &#x201c;Name Policies&#x201d;). &#x201c;Direct U.S. Treasury Obligations&#x201d; include U.S. Treasury bills, bonds and notes and other securities issued by the U.S. Treasury, as well as Separately Traded Registered Interest and Principal Securities (STRIPS) and other zero-coupon securities. GMO normally seeks to maintain an estimated interest rate duration of one year or less for the Fund&#x2019;s portfolio. For an additional discussion of duration, see &#x201c;Additional Information About the Funds&#x2019; Investment Strategies, Risks, and Expenses &#x2014; Bond Funds &#x2014; Duration.&#x201d;&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;margin-left:3.76%;"&gt;The Fund ordinarily enters into repurchase agreements and reverse repurchase agreements. Under the repurchase agreements &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;entered into by the Fund, the Fund purchases a security backed by the full faith and credit of the U.S. government from a seller who simultaneously commits to repurchase, on an agreed date, the security from the Fund at the original purchase price plus an agreed upon amount representing interest. Under reverse repurchase agreements, the Fund sells a security backed by the full faith and credit of the &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;margin-left:0%;"&gt;U.S. government to a buyer and simultaneously commits to repurchase, on an agreed date, the security from the buyer at the original &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;purchase price plus an agreed upon amount representing interest. &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;margin-left:3.76%;"&gt;In selecting securities for the Fund&#x2019;s portfolio, GMO focuses primarily on the relative attractiveness of different obligations (such &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;as bonds, notes or bills), which can vary depending on the general level of interest rates as well as supply and demand imbalances and other market conditions. The factors GMO considers and investment methods GMO uses can change over time.&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;margin-left:3.76%;"&gt;In addition to Direct U.S. Treasury Obligations, the Fund may invest to a lesser extent in money market funds unaffiliated with &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;GMO and in other fixed income securities that are backed (explicitly or implicitly) by the full faith and credit of the U.S. government or the governments of other developed countries, including but not limited to U.S. and non-U.S. agency securities and securities issued by the Federal Home Loan Bank and the World Bank.&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;margin-left:3.76%;"&gt;The Fund is not a money market fund and is not subject to the maturity, quality, diversification, disclosure, reporting, and other &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;requirements applicable to money market funds under Rule 2a-7 under the Investment Company Act of 1940.&lt;/span&gt;</oef:StrategyNarrativeTextBlock>
    <oef:RiskTextBlock
      contextRef="S000025186_RiskLoseMoneyMember"
      id="x_44201fe9-6a3d-45d2-b9d9-5b8728726257">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;Many factors can affect this value, and you may lose money by investing in the Fund.&lt;/span&gt;</oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="S000025186_RiskNotInsuredDepositoryInstitutionMember"
      id="d8b442b1-e61c-4775-9d99-68205a164ac9">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;An investment in the Fund is not a bank deposit and is not insured or guaranteed by the FDIC or &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;any government agency.&lt;/span&gt;</oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="S000025186_MarketRiskFixedIncomeRiskMember"
      id="x_1a96df46-092a-4777-aec7-caffe041a777">&lt;span style="color:#000000;font-family:Times New Roman;font-size:8pt;"&gt;&#x25cf;&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-style:italic;"&gt;Market Risk &#x2013; Fixed Income&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; &#x2013; The market price of a fixed income investment can decline due to market-related factors, including rising interest or inflation rates and widening credit spreads, or decreased liquidity due, for example, to market uncertainty about the value of a fixed income investment (or class of fixed income investments).&lt;/span&gt;</oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="S000025186_CreditRiskMember"
      id="x_2d09bc6c-15c0-4f04-9150-d18cd267599b">&lt;span style="color:#000000;font-family:Times New Roman;font-size:8pt;"&gt;&#x25cf;&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-style:italic;"&gt;Credit Risk&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; &#x2013; Securities issued by the U.S. Treasury historically have presented minimal credit risk. However, events in 2011 led to a downgrade in the long-term credit rating of U.S. bonds by several major rating agencies and introduced greater uncertainty about the repayment by the United States of its obligations. A further credit rating downgrade could decrease, and a U.S. credit default would decrease, the value of the Fund&#x2019;s investments and increase the volatility of the Fund&#x2019;s portfolio.&lt;/span&gt;</oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="S000025186_LargeTransactionsRiskMember"
      id="da2053fb-eaa7-4c70-a643-94163345db80">&lt;span style="color:#000000;font-family:Times New Roman;font-size:8pt;"&gt;&#x25cf;&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-style:italic;"&gt;Large Transactions Risk&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; &#x2013; To the extent that a large number of shares of the Fund is held by a single shareholder (e.g., an institutional investor or another GMO Fund) or a group of shareholders with a common investment strategy (e.g., GMO asset allocation accounts), the Fund is subject to the risk that a redemption by (or caused by) that shareholder or group will require the Fund to sell investments at disadvantageous prices, disrupt the Fund&#x2019;s operations, lead to temporary overexposure to the Fund&#x2019;s intended investment program or force the Fund&#x2019;s liquidation. The Fund also may be subject to these effects when a number of shareholders collectively redeem or sell a large amount of Fund shares.&lt;/span&gt;</oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="S000025186_ManagementandOperationalRiskMember"
      id="x_21a2d85e-9c80-43ea-936a-bd1f80d7556e">&lt;span style="color:#000000;font-family:Times New Roman;font-size:8pt;"&gt;&#x25cf;&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-style:italic;"&gt;Management and Operational Risk&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; &#x2013; The Fund runs the risk that GMO&#x2019;s investment techniques will fail to produce intended results.&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;The Fund also runs the risk that GMO&#x2019;s assessment of an investment, including a security&#x2019;s fundamental fair (or intrinsic) value, is wrong or that deficiencies in GMO&#x2019;s or another service provider&#x2019;s internal systems or controls will cause losses for the Fund or impair Fund operations.&lt;/span&gt;</oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="S000025186_MarketDisruptionandGeopoliticalRiskMember"
      id="x_16f503a7-71fa-4b2a-af8a-e7c3469ee9bd">&lt;span style="color:#000000;font-family:Times New Roman;font-size:8pt;"&gt;&#x25cf;&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-style:italic;"&gt;Market Disruption and Geopolitical Risk&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; &#x2013; Geopolitical and other events (e.g., wars, pandemics, sanctions, terrorism, diplomatic tensions, dramatic changes in regulatory and/or foreign policy, cyberattacks, and rapid technological developments such as artificial intelligence) often disrupt securities markets and adversely affect the general economy or particular economies and markets. Those events, as well as other changes in non-U.S. and U.S. economic and political conditions, could exacerbate other risks or otherwise reduce the value of the Fund&#x2019;s investments.&lt;/span&gt;</oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="S000025186_CounterpartyRiskMember"
      id="x_7c655c10-d661-4bab-adf3-68eefb6c9bad">&lt;span style="color:#000000;font-family:Times New Roman;font-size:8pt;"&gt;&#x25cf;&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-style:italic;"&gt;Counterparty Risk&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; &#x2013; The Fund runs the risk that the counterparty to a derivatives contract or a clearing member used by the Fund to hold a cleared derivatives contract is unable or unwilling to make timely settlement payments, return the Fund&#x2019;s collateral or otherwise honor its obligations.&lt;/span&gt;</oef:RiskTextBlock>
    <oef:BarChartAndPerformanceTableHeading
      contextRef="S000025186"
      id="x_375d71fd-9fee-479a-9b69-1adb13e50dcf">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-weight:bold;"&gt;Performance&lt;/span&gt;</oef:BarChartAndPerformanceTableHeading>
    <oef:PerformanceNarrativeTextBlock
      contextRef="S000025186"
      id="a562de5c-c704-4a80-8e0f-b8ebb10d1cde">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;margin-left:3.76%;"&gt;The bar chart and table below provide some indication of the risks of investing in the Fund by showing changes in the Fund&#x2019;s &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;annual total returns from year to year for the periods indicated and by comparing the Fund&#x2019;s average annual total returns for different calendar periods with those of the Fund's benchmark and a broad-based securities market index intended solely to represent, in satisfaction of regulatory requirements, the overall domestic fixed income market.&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; Share classes not shown would have substantially &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;similar annual returns to those below because all share classes invest in the same portfolio of securities. Annual returns vary among share classes to the extent that they bear different expenses. Share classes that bear higher expenses than the share classes shown below would have lower returns. &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;After-tax returns are calculated using the historical highest individual federal marginal income tax rates and &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;do not reflect the impact of state and local taxes.&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; Actual after-tax returns depend on your tax situation and may differ from those shown. &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;After-tax returns shown are not relevant if you are tax-exempt or if you hold your Fund shares through tax-advantaged arrangements (such as a 401(k) plan or individual retirement account).&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; Updated performance information for the Fund is available at &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;www.gmo.com&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;. &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;Past performance (before and after taxes) is not an indication of future performance.&lt;/span&gt;</oef:PerformanceNarrativeTextBlock>
    <oef:PerformanceInformationIllustratesVariabilityOfReturns
      contextRef="S000025186"
      id="f86bf9a7-58b7-40da-9f1d-8a0a15c8574c">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;margin-left:3.76%;"&gt;The bar chart and table below provide some indication of the risks of investing in the Fund by showing changes in the Fund&#x2019;s &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;annual total returns from year to year for the periods indicated and by comparing the Fund&#x2019;s average annual total returns for different calendar periods with those of the Fund's benchmark and a broad-based securities market index intended solely to represent, in satisfaction of regulatory requirements, the overall domestic fixed income market.&lt;/span&gt;</oef:PerformanceInformationIllustratesVariabilityOfReturns>
    <oef:PerformanceTableUsesHighestFederalRate
      contextRef="S000025186"
      id="x_43f34595-3029-4f01-ba01-0a7c998566a4">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;After-tax returns are calculated using the historical highest individual federal marginal income tax rates and &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;do not reflect the impact of state and local taxes.&lt;/span&gt;</oef:PerformanceTableUsesHighestFederalRate>
    <oef:PerformanceTableNotRelevantToTaxDeferred
      contextRef="S000025186"
      id="x_55fb8928-b118-4b0c-93cb-1519d5125a95">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt; Actual after-tax returns depend on your tax situation and may differ from those shown. &lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;After-tax returns shown are not relevant if you are tax-exempt or if you hold your Fund shares through tax-advantaged arrangements (such as a 401(k) plan or individual retirement account).&lt;/span&gt;</oef:PerformanceTableNotRelevantToTaxDeferred>
    <oef:PerformanceAvailabilityWebSiteAddress
      contextRef="S000025186"
      id="c35efe2f-4d45-4c6b-82cd-bb576b08b617">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;www.gmo.com&lt;/span&gt;</oef:PerformanceAvailabilityWebSiteAddress>
    <oef:PerformancePastDoesNotIndicateFuture
      contextRef="S000025186"
      id="x_4ceb4b6b-b6e9-4bb6-afb3-31f977272220">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;Past performance (before and after taxes) is not an indication of future performance.&lt;/span&gt;</oef:PerformancePastDoesNotIndicateFuture>
    <oef:BarChartHeading
      contextRef="S000025186"
      id="x_65436790-8e63-4fca-a545-cf7acd18b4ab">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-weight:bold;"&gt;Annual Total Returns/Class VI Shares&lt;/span&gt; &lt;br/&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;Years Ending December 31&lt;/span&gt;</oef:BarChartHeading>
    <oef:BarChartClosingTextBlock
      contextRef="S000025186"
      id="dfa196f0-61ae-4b70-a69f-477f7b8e599e">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;Highest Quarter:&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;1.49%&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;-sec-ix-hidden:dc5ad4dd-ea9f-404c-9fa1-c759b6adb481"&gt;2Q 2023&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;Lowest Quarter:&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;-0.31%&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;-sec-ix-hidden:ce50d8a9-ec77-4b54-a56d-500edb5b86cb"&gt;1Q 2022&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;Year-to-Date:&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;1.24%&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;As of&lt;/span&gt;&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;3/31/2025&lt;/span&gt;</oef:BarChartClosingTextBlock>
    <oef:HighestQuarterlyReturnLabel
      contextRef="S000025186_C000075084"
      id="faad0d4d-71aa-457f-9180-b157d3c0c179">&lt;span style="color:#000000;font-family:Times New Roman;font-size:10pt;"&gt;Highest Quarter:&lt;/span&gt;</oef:HighestQuarterlyReturnLabel>
    <oef:BarChartHighestQuarterlyReturn
      contextRef="S000025186_C000075084"
      decimals="4"
      id="ac76b07e-dd62-4db7-aed7-5d4adf9618d6"
      unitRef="pure">0.0149</oef:BarChartHighestQuarterlyReturn>
    <oef:LowestQuarterlyReturnLabel
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