GMO Emerging Country Debt Fund Average Annual Total Returns |
12 Months Ended | 53 Months Ended | 60 Months Ended | 120 Months Ended | 336 Months Ended | 380 Months Ended | |||
|---|---|---|---|---|---|---|---|---|---|
Feb. 28, 2026 |
Dec. 31, 2025 |
Dec. 31, 2025 |
Dec. 31, 2025 |
Dec. 31, 2025 |
Dec. 31, 2025 |
Dec. 31, 2025 |
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| Class III | |||||||||
| Prospectus [Line Items] | |||||||||
| Average Annual Return, Percent | 20.51% | 5.83% | 6.96% | 12.24% | |||||
| Performance Inception Date | Apr. 19, 1994 | ||||||||
| Class III | After Taxes on Distributions | |||||||||
| Prospectus [Line Items] | |||||||||
| Average Annual Return, Percent | 17.50% | 2.08% | 3.47% | 7.44% | |||||
| Class III | After Taxes on Distributions and Sales | |||||||||
| Prospectus [Line Items] | |||||||||
| Average Annual Return, Percent | 12.10% | 2.66% | 3.73% | 7.58% | |||||
| Class III | J.P. Morgan EMBI Global Diversified + (Composite index) (Fund benchmark)[Member] | |||||||||
| Prospectus [Line Items] | |||||||||
| Average Annual Return, Percent | [1] | 14.30% | 1.78% | 4.26% | 8.40% | ||||
| Class IV | |||||||||
| Prospectus [Line Items] | |||||||||
| Average Annual Return, Percent | 20.57% | 5.89% | 7.03% | 9.78% | |||||
| Performance Inception Date | Jan. 09, 1998 | ||||||||
| Class IV | J.P. Morgan EMBI Global Diversified + (Composite index) (Fund benchmark)[Member] | |||||||||
| Prospectus [Line Items] | |||||||||
| Average Annual Return, Percent | [1] | 14.30% | 1.78% | 4.26% | 6.97% | ||||
| Class VI | |||||||||
| Prospectus [Line Items] | |||||||||
| Average Annual Return, Percent | 20.62% | 6.51% | |||||||
| Performance Inception Date | Jul. 29, 2021 | ||||||||
| Class VI | J.P. Morgan EMBI Global Diversified + (Composite index) (Fund benchmark)[Member] | |||||||||
| Prospectus [Line Items] | |||||||||
| Average Annual Return, Percent | 14.30% | 2.09% | |||||||
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