S000076879 [Member] Investment Objectives and Goals - AB Tax-Aware Short Duration Municipal ETF |
Nov. 30, 2025 |
|---|---|
| Prospectus [Line Items] | |
| Risk/Return [Heading] | FIXED-INCOME—MUNICIPAL AB Tax-Aware Short Duration Municipal ETF |
| Objective [Heading] | INVESTMENT OBJECTIVE |
| Objective, Primary [Text Block] |
The Fund seeks to provide relative stability of principal and a moderate rate of after-tax return and income.
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