S000065837 [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 US Quality Low Volatility ETF | FlexShares US Quality Low Volatility Index Fund | ||||||
| Prospectus [Line Items] | ||||||
| Annual Return [Percent] | 12.13% | 18.13% | 13.71% | (9.87%) | 26.07% | 9.45% |