020100 - Document - Risk/Return Summary {Unlabeled} - GMO Horizons ETF link:presentationLink link:definitionLink link:calculationLink 020101 - Disclosure - Risk/Return Detail Data {Elements} - GMO Horizons ETF link:presentationLink link:definitionLink link:calculationLink 020102 - Document - Risk/Return Summary {Unlabeled} - GMO Dynamic Allocation ETF link:presentationLink link:definitionLink link:calculationLink 020103 - Disclosure - Risk/Return Detail Data {Elements} - GMO Dynamic Allocation ETF link:presentationLink link:definitionLink link:calculationLink 020104 - Document - Risk/Return Summary {Unlabeled} - GMO Domestic Resilience ETF link:presentationLink link:definitionLink link:calculationLink 020105 - Disclosure - Risk/Return Detail Data {Elements} - GMO Domestic Resilience ETF link:presentationLink link:definitionLink link:calculationLink 020106 - Document - Risk/Return Summary {Unlabeled} - GMO Ultra-Short Income ETF link:presentationLink link:definitionLink link:calculationLink 020107 - Disclosure - Risk/Return Detail Data {Elements} - GMO Ultra-Short Income ETF link:presentationLink link:definitionLink link:calculationLink