S000062452 [Member] Expense Example - AB All China Equity Portfolio |
Jun. 30, 2026
USD ($)
|
|---|---|
| Advisor Class | |
| Prospectus [Line Items] | |
| Expense Example, with Redemption, 1 Year | $ 127 |
| Expense Example, with Redemption, 3 Years | 528 |
| Expense Example, with Redemption, 5 Years | 953 |
| Expense Example, with Redemption, 10 Years | 2,140 |
| Class A | |
| Prospectus [Line Items] | |
| Expense Example, with Redemption, 1 Year | 571 |
| Expense Example, with Redemption, 3 Years | 1,004 |
| Expense Example, with Redemption, 5 Years | 1,461 |
| Expense Example, with Redemption, 10 Years | $ 2,726 |