GMO Benchmark-Free Fund Annual Fund Operating Expenses - GMO Benchmark-Free Fund |
Feb. 28, 2025 |
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| Prospectus [Line Items] | ||||||||||||
| Fee Waiver or Reimbursement over Assets, Date of Termination | <span style="color:#000000;font-family:Times New Roman;font-size:8pt;font-style:italic;">June 30, 2026</span> | |||||||||||
| Class III | ||||||||||||
| Prospectus [Line Items] | ||||||||||||
| Management Fees (as a percentage of Assets) | 0.00% | [1] | ||||||||||
| Component1 Other Expenses | 0.41% | |||||||||||
| Component3 Other Expenses | 0.11% | |||||||||||
| Other Expenses (as a percentage of Assets): | 0.52% | [2],[3] | ||||||||||
| Acquired Fund Fees and Expenses | 0.11% | [4] | ||||||||||
| Expenses (as a percentage of Assets) | 0.63% | |||||||||||
| Fee Waiver or Reimbursement | (0.07%) | [5] | ||||||||||
| Net Expenses (as a percentage of Assets) | 0.56% | |||||||||||
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