v3.26.1
GMO Alternative Allocation Fund Expense Example - GMO Alternative Allocation Fund
Feb. 28, 2026
USD ($)
Class II  
Prospectus [Line Items]  
Expense Example, with Redemption, 1 Year $ 293
Expense Example, with Redemption, 3 Years 920
Expense Example, with Redemption, 5 Years 1,572
Expense Example, with Redemption, 10 Years 3,319
Class III  
Prospectus [Line Items]  
Expense Example, with Redemption, 1 Year 286
Expense Example, with Redemption, 3 Years 899
Expense Example, with Redemption, 5 Years 1,538
Expense Example, with Redemption, 10 Years 3,254
Class IV  
Prospectus [Line Items]  
Expense Example, with Redemption, 1 Year 282
Expense Example, with Redemption, 3 Years 887
Expense Example, with Redemption, 5 Years 1,518
Expense Example, with Redemption, 10 Years 3,216
Class V  
Prospectus [Line Items]  
Expense Example, with Redemption, 1 Year 280
Expense Example, with Redemption, 3 Years 881
Expense Example, with Redemption, 5 Years 1,509
Expense Example, with Redemption, 10 Years 3,197
Class VI  
Prospectus [Line Items]  
Expense Example, with Redemption, 1 Year 277
Expense Example, with Redemption, 3 Years 873
Expense Example, with Redemption, 5 Years 1,494
Expense Example, with Redemption, 10 Years 3,168
Class R6  
Prospectus [Line Items]  
Expense Example, with Redemption, 1 Year 293
Expense Example, with Redemption, 3 Years 920
Expense Example, with Redemption, 5 Years 1,572
Expense Example, with Redemption, 10 Years 3,319
Class I  
Prospectus [Line Items]  
Expense Example, with Redemption, 1 Year 305
Expense Example, with Redemption, 3 Years 959
Expense Example, with Redemption, 5 Years 1,638
Expense Example, with Redemption, 10 Years $ 3,448