020100 - Document - Risk/Return Summary {Unlabeled} - GMO Benchmark-Free Allocation Fund - GMO Benchmark-Free Allocation Fund link:presentationLink link:definitionLink link:calculationLink 020101 - Disclosure - Risk/Return Detail Data {Elements} - GMO Benchmark-Free Allocation Fund - GMO Benchmark-Free Allocation Fund link:presentationLink link:definitionLink link:calculationLink 020102 - Document - Risk/Return Summary {Unlabeled} - GMO Global Asset Allocation Fund - GMO Global Asset Allocation Fund link:presentationLink link:definitionLink link:calculationLink 020103 - Disclosure - Risk/Return Detail Data {Elements} - GMO Global Asset Allocation Fund - GMO Global Asset Allocation Fund link:presentationLink link:definitionLink link:calculationLink 020104 - Document - Risk/Return Summary {Unlabeled} - GMO Emerging Markets Fund - GMO Emerging Markets Fund link:presentationLink link:definitionLink link:calculationLink 020105 - Disclosure - Risk/Return Detail Data {Elements} - GMO Emerging Markets Fund - 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Disclosure - Risk/Return Detail Data {Elements} - GMO Global Equity Allocation Fund - GMO Global Equity Allocation Fund link:presentationLink link:definitionLink link:calculationLink 020112 - Document - Risk/Return Summary {Unlabeled} - GMO International Developed Equity Allocation Fund - GMO International Developed Equity Allocation Fund link:presentationLink link:definitionLink link:calculationLink 020113 - Disclosure - Risk/Return Detail Data {Elements} - GMO International Developed Equity Allocation Fund - GMO International Developed Equity Allocation Fund link:presentationLink link:definitionLink link:calculationLink 020114 - Document - Risk/Return Summary {Unlabeled} - GMO International Equity Allocation Fund - GMO International Equity Allocation Fund link:presentationLink link:definitionLink link:calculationLink 020115 - Disclosure - Risk/Return Detail Data {Elements} - GMO International Equity Allocation Fund - GMO International Equity Allocation Fund link:presentationLink link:definitionLink link:calculationLink 020116 - Document - Risk/Return Summary {Unlabeled} - GMO International Equity Fund - GMO International Equity Fund link:presentationLink link:definitionLink link:calculationLink 020117 - Disclosure - Risk/Return Detail Data {Elements} - GMO International Equity Fund - GMO International Equity Fund link:presentationLink link:definitionLink link:calculationLink 020118 - Document - Risk/Return Summary {Unlabeled} - GMO Quality Fund - GMO Quality Fund link:presentationLink link:definitionLink link:calculationLink 020119 - Disclosure - Risk/Return Detail Data {Elements} - GMO Quality Fund - GMO Quality Fund link:presentationLink link:definitionLink link:calculationLink 020120 - Document - Risk/Return Summary {Unlabeled} - GMO U.S. Equity Fund - GMO U.S. Equity Fund link:presentationLink link:definitionLink link:calculationLink 020121 - Disclosure - Risk/Return Detail Data {Elements} - GMO U.S. Equity Fund - GMO U.S. Equity Fund link:presentationLink link:definitionLink link:calculationLink 020122 - 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