S000035596 [Member] Investment Objectives and Goals - Northern Trust Ultra-Short Fixed Income ETF |
Oct. 31, 2025 |
|---|---|
| Prospectus [Line Items] | |
| Risk/Return [Heading] | Fund Summaries Northern Trust Ultra-Short Fixed Income ETF (formerly, FlexShares® Ultra-Short Income Fund) |
| Objective [Heading] | Investment Objective |
| Objective, Primary [Text Block] | The Fund seeks maximum current income consistent with the preservation of capital and liquidity.
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