S000065838 [Member] Annual Total Returns |
12 Months Ended | |||||
|---|---|---|---|---|---|---|
Dec. 31, 2025 |
Dec. 31, 2024 |
Dec. 31, 2023 |
Dec. 31, 2022 |
Dec. 31, 2021 |
Dec. 31, 2020 |
|
| Northern Trust Developed Markets ex-US Quality Low Volatility ETF | FlexShares Developed Markets ex-US Quality Low Volatility Index Fund | ||||||
| Prospectus [Line Items] | ||||||
| Annual Return [Percent] | 23.56% | 5.28% | 12.21% | (12.49%) | 9.13% | 3.04% |