GMO Benchmark-Free Fund Annual Total Returns |
12 Months Ended | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|
Dec. 31, 2024 |
Dec. 31, 2023 |
Dec. 31, 2022 |
Dec. 31, 2021 |
Dec. 31, 2020 |
Dec. 31, 2019 |
Dec. 31, 2018 |
Dec. 31, 2017 |
Dec. 31, 2016 |
Dec. 31, 2015 |
|
| GMO Benchmark-Free Fund | Class III | ||||||||||
| Prospectus [Line Items] | ||||||||||
| Annual Return [Percent] | 4.63% | 15.21% | (3.32%) | 4.37% | (3.36%) | 13.78% | (7.16%) | 17.06% | 5.41% | (3.19%) |