v3.26.1
Expense Example - AB Income Fund
Oct. 31, 2025
USD ($)
Class A  
Prospectus [Line Items]  
Expense Example, with Redemption, 1 Year $ 503
Expense Example, with Redemption, 3 Years 678
Expense Example, with Redemption, 5 Years 867
Expense Example, with Redemption, 10 Years 1,415
Class C  
Prospectus [Line Items]  
Expense Example, with Redemption, 1 Year 257 [1]
Expense Example, with Redemption, 3 Years 497
Expense Example, with Redemption, 5 Years 861
Expense Example, with Redemption, 10 Years 1,684
Advisor Class  
Prospectus [Line Items]  
Expense Example, with Redemption, 1 Year 55
Expense Example, with Redemption, 3 Years 184
Expense Example, with Redemption, 5 Years 324
Expense Example, with Redemption, 10 Years 733
Class Z  
Prospectus [Line Items]  
Expense Example, with Redemption, 1 Year 55
Expense Example, with Redemption, 3 Years 173
Expense Example, with Redemption, 5 Years 302
Expense Example, with Redemption, 10 Years $ 677
[1]
If you did not redeem your shares at the end of the period, your expenses would be decreased by approximately $100.