S000033316 [Member] Investment Objectives and Goals - Northern Trust iBoxx 3-Year Target Duration TIPS ETF |
Oct. 31, 2025 |
|---|---|
| Prospectus [Line Items] | |
| Risk/Return [Heading] | Northern Trust iBoxx® 3-Year Target Duration TIPS ETF (formerly, FlexShares® iBoxx® 3-Year Target Duration TIPS Index Fund) |
| Objective [Heading] | Investment Objective |
| Objective, Primary [Text Block] | The Fund seeks to provide investment results that, before fees and expenses, correspond generally to the price and yield performance of the iBoxx 3-Year Target Duration TIPS Index (the “Underlying Index”).
|