v3.26.3
S000010352 [Member] Expense Example - AB New York Portfolio
May 31, 2026
USD ($)
Class A  
Prospectus [Line Items]  
Expense Example, with Redemption, 1 Year $ 374
Expense Example, with Redemption, 3 Years 551
Expense Example, with Redemption, 5 Years 743
Expense Example, with Redemption, 10 Years 1,298
Class C  
Prospectus [Line Items]  
Expense Example, with Redemption, 1 Year 253 [1]
Expense Example, with Redemption, 3 Years 491
Expense Example, with Redemption, 5 Years 853
Expense Example, with Redemption, 10 Years 1,673
Advisor Class  
Prospectus [Line Items]  
Expense Example, with Redemption, 1 Year 51
Expense Example, with Redemption, 3 Years 180
Expense Example, with Redemption, 5 Years 320
Expense Example, with Redemption, 10 Years $ 729
[1]
If you did not redeem your shares at the end of the period, your expenses would be decreased by approximately $100.