S000065839 [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 Emerging Markets Quality Low Volatility ETF | FlexShares Emerging Markets Quality Low Volatility Index Fund | ||||||
| Prospectus [Line Items] | ||||||
| Annual Return [Percent] | 21.72% | 10.76% | 8.34% | (12.93%) | 1.28% | 4.32% |