S000093510 [Member] Performance Management - NT 1-5 Year Tax-Exempt Ladder ETF |
Aug. 05, 2025 |
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| Prospectus [Line Items] | |
| Bar Chart and Performance Table [Heading] | FUND PERFORMANCE |
| Performance Narrative [Text Block] | The Fund is new and therefore does not have a performance history for a full calendar year. Performance information for the Fund will be provided once it has annual returns for a full calendar year. The Fund’s past performance, before and after taxes, is not necessarily an indication of how the Fund will perform in the future. Updated performance information for the Fund is available and may be obtained on the Fund’s website at flexshares.com or by calling 1‑855‑353‑9383.
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| Performance Past Does Not Indicate Future [Text] | The Fund’s past performance, before and after taxes, is not necessarily an indication of how the Fund will perform in the future. |
| Performance One Year or Less [Text] | The Fund is new and therefore does not have a performance history for a full calendar year. |
| Performance Availability Website Address [Text] | flexshares.com |
| Performance Availability Phone [Text] | 1‑855‑353‑9383 |