AB Fixed Income Taxable Portfolios [Member] Shareholder Fees - AB Fixed Income Taxable Portfolios - AB Core Bond Portfolio - AB Core Bond Class Z |
Sep. 30, 2025 |
|---|---|
| Prospectus [Line Items] | |
| Maximum Sales Charge Imposed on Purchases (as a percentage of Offering Price) | 0.00% |
| Maximum Deferred Sales Charge (as a percentage) | 0.00% |