v3.26.1
GMO Benchmark-Free Allocation Fund Expense Example - GMO Benchmark-Free Allocation Fund
Feb. 28, 2026
USD ($)
Class III  
Prospectus [Line Items]  
Expense Example, with Redemption, 1 Year $ 137
Expense Example, with Redemption, 3 Years 459
Expense Example, with Redemption, 5 Years 804
Expense Example, with Redemption, 10 Years 1,778
Class IV  
Prospectus [Line Items]  
Expense Example, with Redemption, 1 Year 132
Expense Example, with Redemption, 3 Years 444
Expense Example, with Redemption, 5 Years 778
Expense Example, with Redemption, 10 Years 1,722
Class R6  
Prospectus [Line Items]  
Expense Example, with Redemption, 1 Year 137
Expense Example, with Redemption, 3 Years 459
Expense Example, with Redemption, 5 Years 804
Expense Example, with Redemption, 10 Years 1,778
Class I  
Prospectus [Line Items]  
Expense Example, with Redemption, 1 Year 149
Expense Example, with Redemption, 3 Years 493
Expense Example, with Redemption, 5 Years 862
Expense Example, with Redemption, 10 Years $ 1,898