v3.26.1
GMO U.S. Opportunistic Value Fund Expense Example - GMO U.S. Opportunistic Value Fund
Feb. 28, 2026
USD ($)
Class III  
Prospectus [Line Items]  
Expense Example, with Redemption, 1 Year $ 50
Expense Example, with Redemption, 3 Years 168
Expense Example, with Redemption, 5 Years 297
Expense Example, with Redemption, 10 Years 672
Class V  
Prospectus [Line Items]  
Expense Example, with Redemption, 1 Year 44
Expense Example, with Redemption, 3 Years 149
Expense Example, with Redemption, 5 Years 264
Expense Example, with Redemption, 10 Years 599
Class VI  
Prospectus [Line Items]  
Expense Example, with Redemption, 1 Year 41
Expense Example, with Redemption, 3 Years 139
Expense Example, with Redemption, 5 Years 247
Expense Example, with Redemption, 10 Years 562
Class R6  
Prospectus [Line Items]  
Expense Example, with Redemption, 1 Year 51
Expense Example, with Redemption, 3 Years 171
Expense Example, with Redemption, 5 Years 302
Expense Example, with Redemption, 10 Years 684
Class I  
Prospectus [Line Items]  
Expense Example, with Redemption, 1 Year 62
Expense Example, with Redemption, 3 Years 208
Expense Example, with Redemption, 5 Years 367
Expense Example, with Redemption, 10 Years $ 829