GMO Benchmark-Free Fund Annual Fund Operating Expenses - GMO Benchmark-Free Fund |
Feb. 28, 2026 |
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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, 2027</span> | |||||||||
| Class III | ||||||||||
| Prospectus [Line Items] | ||||||||||
| Management Fees (as a percentage of Assets) | 0.00% | [1] | ||||||||
| Component1 Other Expenses | 0.25% | |||||||||
| Component3 Other Expenses | 0.09% | |||||||||
| Other Expenses (as a percentage of Assets): | 0.34% | [2] | ||||||||
| Acquired Fund Fees and Expenses | 0.42% | [3] | ||||||||
| Expenses (as a percentage of Assets) | 0.76% | |||||||||
| Fee Waiver or Reimbursement | (0.06%) | [4] | ||||||||
| Net Expenses (as a percentage of Assets) | 0.70% | |||||||||
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