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S000073359 [Member] Investment Objectives and Goals - Northern Trust ESG & Climate Developed Markets ex-US Core ETF
Oct. 31, 2025
Prospectus [Line Items]  
Risk/Return [Heading] Northern Trust ESG & Climate Developed Markets ex-US Core ETF (formerly, FlexShares® ESG & Climate Developed Markets ex-US Core Index Fund)
Objective [Heading] Investment Objective
Objective, Primary [Text Block]
The Fund seeks investment results that correspond generally to the price and yield performance, before fees and expenses, of the Northern Trust ESG & Climate Developed Markets ex-US Core IndexSM (the “Underlying Index”).