S000093946 [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 |
Dec. 31, 2016 |
|
| AB New York Intermediate Municipal ETF | Advisor Class | ||||||||||
| Prospectus [Line Items] | ||||||||||
| Annual Return [Percent] | 3.85% | 2.14% | 5.26% | (5.65%) | 1.74% | 2.99% | 5.59% | 0.87% | 3.14% | (0.02%) |