S000043008 [Member] Expense Example - Northern Trust Global Quality Real Estate ETF - FlexShares Global Quality Real Estate Index Fund	Oct. 31, 2025 USD ($)
Prospectus [Line Items]
Expense Example, with Redemption, 1 Year	$ 46
Expense Example, with Redemption, 3 Years	147
Expense Example, with Redemption, 5 Years	257
Expense Example, with Redemption, 10 Years	$ 578

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