v3.26.1
Expense Example - AB Emerging Markets Multi-Asset Portfolio
Mar. 31, 2026
USD ($)
Class A  
Prospectus [Line Items]  
Expense Example, with Redemption, 1 Year $ 547
Expense Example, with Redemption, 3 Years 880
Expense Example, with Redemption, 5 Years 1,235
Expense Example, with Redemption, 10 Years 2,235
Class C  
Prospectus [Line Items]  
Expense Example, with Redemption, 1 Year 303 [1]
Expense Example, with Redemption, 3 Years 708
Expense Example, with Redemption, 5 Years 1,240
Expense Example, with Redemption, 10 Years 2,505
Advisor Class  
Prospectus [Line Items]  
Expense Example, with Redemption, 1 Year 102
Expense Example, with Redemption, 3 Years 397
Expense Example, with Redemption, 5 Years 715
Expense Example, with Redemption, 10 Years 1,614
Class I  
Prospectus [Line Items]  
Expense Example, with Redemption, 1 Year 102
Expense Example, with Redemption, 3 Years 417
Expense Example, with Redemption, 5 Years 754
Expense Example, with Redemption, 10 Years $ 1,707
[1]
If you did not redeem your shares at the end of the period, your expenses would be decreased by approximately $100.