AB Fixed Income Taxable Portfolios [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 Fixed Income Taxable Portfolios | AB Core Bond Portfolio | AB Core Bond Class Z | ||||||||||
| Prospectus [Line Items] | ||||||||||
| Annual Return [Percent] | 7.30% | 1.26% | 5.58% | (13.73%) | (1.15%) | 6.97% | 8.57% | (0.26%) | 3.92% | 4.24% |