v3.26.1
S000054499 [Member] Investment Objectives and Goals - Northern Trust STOXX Global ESG Select ETF
Oct. 31, 2025
Prospectus [Line Items]  
Risk/Return [Heading] Northern Trust STOXX® Global ESG Select ETF (formerly, FlexShares® STOXX® Global ESG Select 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 STOXX® Global ESG Select KPIs IndexSM (the “Underlying Index”).