v3.25.4
S000028085 [Member] Shareholder Fees - AB All Market Real Return Portfolio
Oct. 31, 2025
Class Z  
Prospectus [Line Items]  
Maximum Sales Charge Imposed on Purchases (as a percentage of Offering Price) 0.00%
Maximum Deferred Sales Charge (as a percentage) 0.00%
Exchange Fee (as a percentage of Amount Redeemed) 0.00%
Class A  
Prospectus [Line Items]  
Maximum Sales Charge Imposed on Purchases (as a percentage of Offering Price) 4.25%
Maximum Deferred Sales Charge (as a percentage) 0.00% [1]
Exchange Fee (as a percentage of Amount Redeemed) 0.00%
Class C  
Prospectus [Line Items]  
Maximum Sales Charge Imposed on Purchases (as a percentage of Offering Price) 0.00%
Maximum Deferred Sales Charge (as a percentage) 1.00% [2]
Exchange Fee (as a percentage of Amount Redeemed) 0.00%
Advisor Class  
Prospectus [Line Items]  
Maximum Sales Charge Imposed on Purchases (as a percentage of Offering Price) 0.00%
Maximum Deferred Sales Charge (as a percentage) 0.00%
Exchange Fee (as a percentage of Amount Redeemed) 0.00%
Class 1  
Prospectus [Line Items]  
Maximum Sales Charge Imposed on Purchases (as a percentage of Offering Price) 0.00%
Maximum Deferred Sales Charge (as a percentage) 0.00%
Exchange Fee (as a percentage of Amount Redeemed) 0.00%
[1]
Purchases of Class A shares in amounts of $1,000,000 or more, or by certain group retirement plans, may be subject to a 1%, 1-year contingent deferred sales charge (“CDSC”), which may be subject to waiver in certain circumstances.
[2]
For Class C shares, the CDSC is 0% after the first year. Class C shares automatically convert to Class A shares after eight years.