S000054499 [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 |
Dec. 31, 2019 |
Dec. 31, 2018 |
Dec. 31, 2017 |
|
| Northern Trust STOXX Global ESG Select ETF | FlexShares STOXX Global ESG Select Index Fund | |||||||||
| Prospectus [Line Items] | |||||||||
| Annual Return [Percent] | 23.58% | 14.81% | 25.43% | (18.34%) | 23.54% | 17.53% | 29.27% | (8.49%) | 23.85% |