| Label | Element | Value | ||
|---|---|---|---|---|
| GMO Emerging Country Debt Shares Fund | GMO Emerging Country Debt Shares Fund | ||||
| Prospectus [Line Items] | oef_ProspectusLineItems | |||
| Risk/Return [Heading] | oef_RiskReturnHeading | GMO Emerging Country Debt Shares Fund | ||
| Shareholder Fees Caption [Optional Text] | oef_ShareholderFeesCaption | Shareholder fees | ||
| Expense Example [Heading] | oef_ExpenseExampleHeading | Example | ||
| Expense Example Narrative [Text Block] | oef_ExpenseExampleNarrativeTextBlock | This example is intended to help you compare the cost of investing in the Fund with the cost of investing in other funds. The example assumes that you invest $10,000 in the Fund for the time periods indicated. The example also assumes that your investment has a 5% return each year and that the Fund’s operating expenses remain the same as those shown in the table. The one year amounts shown reflect the expense reimbursement and waiver noted in the expense table. Although your actual costs may be higher or lower, based on these assumptions your costs would be: |
||
| GMO Emerging Country Debt Shares Fund | GMO Emerging Country Debt Shares Fund | Class R6 | ||||
| Prospectus [Line Items] | oef_ProspectusLineItems | |||
| Maximum Deferred Sales Charge (as a percentage of Offering Price) | oef_MaximumDeferredSalesChargeOverOfferingPrice | 0.00% | ||
| Redemption Fee (as a percentage of Amount Redeemed) | oef_RedemptionFeeOverRedemption | 0.00% | ||
| Expense Example, with Redemption, 1 Year | oef_ExpenseExampleYear01 | $ 170 | ||
| Expense Example, with Redemption, 3 Years | oef_ExpenseExampleYear03 | 586 | ||
| Expense Example, No Redemption, 1 Year | oef_ExpenseExampleNoRedemptionYear01 | 118 | ||
| Expense Example, No Redemption, 3 Years | oef_ExpenseExampleNoRedemptionYear03 | $ 531 | ||
| GMO Emerging Country Debt Shares Fund | GMO Emerging Country Debt Shares Fund | Class I | ||||
| Prospectus [Line Items] | oef_ProspectusLineItems | |||
| Maximum Deferred Sales Charge (as a percentage of Offering Price) | oef_MaximumDeferredSalesChargeOverOfferingPrice | 0.50% | [1] | |
| Redemption Fee (as a percentage of Amount Redeemed) | oef_RedemptionFeeOverRedemption | (0.50%) | [1] | |
| Expense Example, with Redemption, 1 Year | oef_ExpenseExampleYear01 | $ 183 | ||
| Expense Example, with Redemption, 3 Years | oef_ExpenseExampleYear03 | 626 | ||
| Expense Example, No Redemption, 1 Year | oef_ExpenseExampleNoRedemptionYear01 | 131 | ||
| Expense Example, No Redemption, 3 Years | oef_ExpenseExampleNoRedemptionYear03 | $ 571 | ||
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