GMO Emerging Markets ex-China Fund Annual Total Returns	12 Months Ended
GMO Emerging Markets ex-China Fund Annual Total Returns	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
GMO Emerging Markets ex-China Fund \| Class III
Prospectus [Line Items]
Annual Return [Percent]	0.21%	27.06%	(32.43%)