v3.25.2
S000010351 [Member] Expense Example - AB National Portfolio
May 31, 2025
USD ($)
Class A  
Prospectus [Line Items]  
Expense Example, with Redemption, 1 Year $ 374
Expense Example, with Redemption, 3 Years 539
Expense Example, with Redemption, 5 Years 718
Expense Example, with Redemption, 10 Years 1,236
Class C  
Prospectus [Line Items]  
Expense Example, with Redemption, 1 Year 253 [1]
Expense Example, with Redemption, 3 Years 481
Expense Example, with Redemption, 5 Years 832
Expense Example, with Redemption, 10 Years 1,620
Advisor Class  
Prospectus [Line Items]  
Expense Example, with Redemption, 1 Year 51
Expense Example, with Redemption, 3 Years 167
Expense Example, with Redemption, 5 Years 294
Expense Example, with Redemption, 10 Years $ 664
[1]
If you did not redeem your shares at the end of the period, your expenses would be decreased by approximately $100.