AB International Bond Portfolio Average Annual Total Returns |
12 Months Ended | 60 Months Ended | 80 Months Ended | 120 Months Ended | |
|---|---|---|---|---|---|
Dec. 31, 2025 |
Dec. 31, 2025 |
Dec. 31, 2025 |
Dec. 31, 2025 |
Dec. 31, 2025 |
|
| Bloomberg Global Aggregate ex-U.S. (USD Hedged) Index (reflects no deduction for mutual fund fees or expenses)[Member] | |||||
| Prospectus [Line Items] | |||||
| Average Annual Return, Percent | 2.80% | 0.79% | 1.83% | 2.58% | |
| AB Custom Benchmark (reflects no deduction for mutual fund fees or expenses)[Member] | |||||
| Prospectus [Line Items] | |||||
| Average Annual Return, Percent | 7.28% | 1.24% | 2.47% | ||
| Class A | |||||
| Prospectus [Line Items] | |||||
| Average Annual Return, Percent | 7.99% | 0.70% | 1.94% | ||
| Performance Inception Date | Apr. 29, 2019 | ||||
| Class B | |||||
| Prospectus [Line Items] | |||||
| Average Annual Return, Percent | 7.77% | 0.45% | 1.71% | ||
| Performance Inception Date | Apr. 29, 2019 |