v3.26.3
Expense Example, No Redemption
Nov. 04, 2026
USD ($)
GMO Emerging Country Debt Fund | GMO Emerging Country Debt Fund | Class III  
Prospectus [Line Items]  
Expense Example, No Redemption, 1 Year $ 113
Expense Example, No Redemption, 3 Years 248
Expense Example, No Redemption, 5 Years 394
Expense Example, No Redemption, 10 Years 820
GMO Emerging Country Debt Fund | GMO Emerging Country Debt Fund | Class IV  
Prospectus [Line Items]  
Expense Example, No Redemption, 1 Year 108
Expense Example, No Redemption, 3 Years 232
Expense Example, No Redemption, 5 Years 367
Expense Example, No Redemption, 10 Years 760
GMO Emerging Country Debt Fund | GMO Emerging Country Debt Fund | Class VI  
Prospectus [Line Items]  
Expense Example, No Redemption, 1 Year 104
Expense Example, No Redemption, 3 Years 219
Expense Example, No Redemption, 5 Years 345
Expense Example, No Redemption, 10 Years 712
GMO Emerging Country Debt Shares Fund | GMO Emerging Country Debt Shares Fund | Class R6  
Prospectus [Line Items]  
Expense Example, No Redemption, 1 Year 118
Expense Example, No Redemption, 3 Years 531
GMO Emerging Country Debt Shares Fund | GMO Emerging Country Debt Shares Fund | Class I  
Prospectus [Line Items]  
Expense Example, No Redemption, 1 Year 131
Expense Example, No Redemption, 3 Years $ 571