S000093944 [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 California Intermediate Municipal ETF | Advisor Class | ||||||||||
| Prospectus [Line Items] | ||||||||||
| Annual Return [Percent] | 4.56% | 2.34% | 5.15% | (4.57%) | 0.83% | 3.49% | 5.35% | 1.15% | 3.11% | (0.29%) |