v3.26.1
Fixed Income SHares Series LD Investment Risks - Fixed Income SHares Series LD
Dec. 31, 2025
Small Portfolio Risk [Member]  
Prospectus [Line Items]  
Risk [Text Block] Small Portfolio Risk:  the risk that a smaller portfolio may not achieve investment or trading efficiencies or may be limited in ability to participate in certain investment opportunities due to its size. Additionally, a smaller portfolio may be more adversely affected by large purchases or redemptions by investors
Interest Rate Risk [Member]  
Prospectus [Line Items]  
Risk [Text Block] Interest Rate Risk:  the risk that fixed income securities will fluctuate in value due to changes in interest rates; a portfolio with a longer average portfolio duration will be more sensitive to changes in interest rates than a portfolio with a shorter average portfolio duration. Factors such as government and central bank policy, inflation, the economy, and the market for bonds can impact interest rates and yields
Credit Risk [Member]  
Prospectus [Line Items]  
Risk [Text Block] Credit Risk:  the risk that the Portfolio could experience losses if the issuer or guarantor of a fixed income security, the counterparty to a derivative contract or a repurchase agreement, a borrower of portfolio securities, or the issuer or guarantor of collateral, is unable or unwilling, or is perceived (whether by market participants, rating agencies, pricing services or otherwise) as unable or unwilling, to meet its financial obligations
Market Risk [Member]  
Prospectus [Line Items]  
Risk [Text Block] Market Risk:  the risk that the value of securities owned by the Portfolio may fluctuate, sometimes rapidly or unpredictably, due to a variety of factors affecting securities markets generally or particular industries or sectors
Foreign Non US Investment Risk [Member]  
Prospectus [Line Items]  
Risk [Text Block] Foreign (Non-U.S.) Investment Risk:  the risk that investing in foreign (non-U.S.) securities may result in the Portfolio experiencing more rapid and extreme changes in value than a portfolio that invests exclusively in securities of U.S. companies, due to smaller or less developed markets, differing financial reporting, accounting, corporate governance and auditing standards, increased risk of delayed settlement of portfolio transactions or loss of certificates of portfolio securities, and the risk of unfavorable U.S. or foreign government actions, including nationalization, expropriation or confiscatory taxation, currency blockage, political changes, diplomatic developments, trade restrictions (including tariffs) or the imposition of sanctions and other similar measures. Foreign securities may also be less liquid and more difficult to value than securities of U.S. issuers
Mortgage Related and Other Asset Backed Securities Risk [Member]  
Prospectus [Line Items]  
Risk [Text Block] Mortgage-Related and Other Asset-Backed Securities Risk:  the risks of investing in mortgage-related and other asset-backed securities, including interest rate risk, extension risk, prepayment risk and credit risk. The Portfolio may invest in any tranche of mortgage-related and other asset-backed securities, including junior and/or equity tranches (to the extent consistent with the Portfolio's guidelines), which generally carry higher levels of the foregoing risks
Emerging Markets Risk [Member]  
Prospectus [Line Items]  
Risk [Text Block] Emerging Markets Risk:  the risk of investing in emerging market securities, primarily increased foreign (non-U.S.) investment risk
Focused Investment Risk [Member]  
Prospectus [Line Items]  
Risk [Text Block] Focused Investment Risk:  the risk that, to the extent that the Portfolio focuses its investments in a particular sector, it may be susceptible to loss due to adverse developments affecting that sector. Furthermore, the Portfolio may invest a substantial portion of its assets in companies in related sectors that may share common characteristics, are often subject to similar business risks and regulatory burdens, and whose securities may react similarly to market developments, which will subject the Portfolio to greater risk. The Portfolio also will be subject to focused investment risk to the extent that it invests a substantial portion of its assets in a particular issuer, market, asset class, country or geographic region
Derivatives Risk [Member]  
Prospectus [Line Items]  
Risk [Text Block] Derivatives Risk:  the risk of investing in derivative instruments (such as forwards, futures, options, swaps and structured securities) and other similar investments, including leverage, liquidity, interest rate, market, counterparty (including credit), operational, legal and management risks, and valuation complexity. Changes in the value of a derivative or other similar investment may not correlate perfectly with, and may be more sensitive to market events than, the underlying asset, rate or index, and the Portfolio could lose more than the initial amount invested. Derivatives used for hedging or risk management may not operate as intended or may expose the Portfolio to additional risks. Changes in the value of a derivative or other similar instrument may also create margin delivery or settlement payment obligations for the Portfolio. The Portfolio’s use of derivatives or other similar investments may result in losses to the Portfolio, a reduction in the Portfolio’s returns and/or increased volatility. Non-centrally-cleared over-the-counter (“OTC”) derivatives or other similar investments are also subject to the risk that a counterparty to the transaction will not fulfill its contractual obligations to the other party, as many of the protections afforded to centrally-cleared derivative transactions might not be available for non-centrally cleared OTC derivatives or other similar investments. The primary credit risk on derivatives or other similar investments that are exchange-traded or traded through a central clearing counterparty resides with the Portfolio's clearing broker or the clearinghouse. Changes in regulations relating to a registered fund’s use of derivatives and related instruments could potentially limit or impact the Portfolio’s ability to invest in derivatives, limit the Portfolio’s ability to employ certain strategies that use derivatives or other similar investments and/or adversely affect the value of derivatives or other similar investments and the Portfolio’s performance
Liquidity Risk [Member]  
Prospectus [Line Items]  
Risk [Text Block] Liquidity Risk:  the risk that a particular investment may be difficult to purchase or sell and that the Portfolio may be unable to sell investments at an advantageous time or price or achieve its desired level of exposure to a certain sector. Liquidity risk may result from the lack of an active market, reduced number and capacity of traditional market participants to make a market in fixed income securities, and may be magnified in changing interest rate environments or other circumstances where investor redemptions from fixed income funds may be higher than normal, causing increased supply in the market due to selling activity. The liquidity of the Portfolio’s shares may be constrained by the liquidity of the Portfolio’s portfolio holdings
Management Risk [Member]  
Prospectus [Line Items]  
Risk [Text Block] Management Risk:  the risk that the investment techniques and risk analyses applied by PIMCO will not produce the desired results and that actual or potential conflicts of interest, legislative, regulatory or tax restrictions, policies or developments may affect the investment techniques available to PIMCO in connection with managing the Portfolio and may cause PIMCO to restrict or prohibit participation in certain investments. There is no guarantee that the investment objective of the Portfolio will be achieved
High Yield Risk [Member]  
Prospectus [Line Items]  
Risk [Text Block] High Yield Risk:  the risk that high yield securities and unrated securities of similar credit quality (commonly known as “junk bonds”) are subject to greater levels of market, credit, call and liquidity risks. High yield securities are considered primarily speculative by rating agencies with respect to the issuer’s continuing ability to make principal and interest payments, and their values may be more volatile than higher-rated securities of similar maturity
Currency Risk [Member]  
Prospectus [Line Items]  
Risk [Text Block] Currency Risk:  the risk that foreign (non-U.S.) currencies may fluctuate in value relative to the U.S. dollar, which can affect the value of the Portfolio’s investments in foreign (non-U.S.) currencies or in securities that trade in, and receive revenues in, or in derivatives that provide exposure to, foreign (non-U.S.) currencies
Leveraging Risk [Member]  
Prospectus [Line Items]  
Risk [Text Block] Leveraging Risk:  the risk that certain transactions of the Portfolio, such as reverse repurchase agreements, loans of portfolio securities, and the use of when-issued, delayed delivery or forward commitment transactions, and derivative instruments, may give rise to leverage, magnifying gains and losses and causing the Portfolio to be more volatile than if it had not been leveraged. This means that leverage entails a heightened risk of loss. The use of leverage may also increase the Portfolio’s sensitivity to interest rate changes and other market risks
Municipal Securities Risk [Member]  
Prospectus [Line Items]  
Risk [Text Block] Municipal Securities Risk:  the risk that investing in municipal securities subjects the Portfolio to certain risks, including variations in the quality of municipal securities, both within a particular classification and between classifications. The rates of return on municipal securities can depend on a variety of factors, including general money market conditions, the financial condition of the issuer, general conditions of the municipal bond market, the size of a particular offering, the maturity of the obligation and the rating of the issue
Issuer Risk [Member]  
Prospectus [Line Items]  
Risk [Text Block] Issuer Risk:  the risk that the value of a security may decline for reasons related to the issuer, such as management performance, changes in financial condition or credit rating, financial leverage, reputation or reduced demand for the issuer’s goods or services
Turnover Risk [Member]  
Prospectus [Line Items]  
Risk [Text Block] Turnover Risk:  the risk that high levels of portfolio turnover may increase transaction costs and taxes and may lower investment performance
Inflation Deflation Risk [Member]  
Prospectus [Line Items]  
Risk [Text Block] Inflation/Deflation Risk:  the risk that the value of assets or income from a Portfolio's investments will be worth less in the future as inflation decreases the value of payments at future dates. As inflation increases, the real value of a Portfolio's investments could decline. Inflation rates may change frequently and significantly as a result of various factors, including unexpected shifts in the domestic or global economy or changes in fiscal or monetary policies (or the expectation of such changes). Deflation risk is the risk that prices throughout the economy decline over time. Deflation may have an adverse effect on the creditworthiness of issuers and may make issuer default more likely, which may result in a decline in the value of a Portfolio's investments
Collateralized Loan Obligations Risk [Member]  
Prospectus [Line Items]  
Risk [Text Block] Collateralized Loan Obligations Risk:  the risk that investing in collateralized loan obligations (“CLOs”) and other similarly structured investments exposes the Portfolio to heightened credit risk, interest rate risk, liquidity risk, market risk and prepayment and extension risk, as well as the risk of default on the underlying asset. In addition, investments in CLOs carry additional risks, including, but not limited to: (i) the possibility that distributions from collateral securities will not be adequate to make interest or other payments; (ii) the quality of the collateral may decline in value or default; (iii) risks related to the capability of the servicer of the securitized assets; (iv) the risk that the Portfolio may invest in tranches of CLOs that are subordinate to other tranches; (v) the structure and complexity of the transaction and the legal documents may not be fully understood at the time of investment and could lead to disputes with the issuer or among investors regarding the characterization of proceeds or unexpected investment results; and (vi) the CLO's manager may perform poorly
Risk Lose Money [Member]  
Prospectus [Line Items]  
Risk [Text Block] It is possible to experience losses on an investment in the Portfolio.
Risk Not Insured Depository Institution [Member]  
Prospectus [Line Items]  
Risk [Text Block] An investment in the Portfolio is not a bank deposit and is not insured or guaranteed by the Federal Deposit Insurance Corporation or any other government agency.