v3.26.3
S000033729 [Member] Investment Objectives and Goals - AB Emerging Markets Multi-Asset Portfolio
Jun. 30, 2026
Prospectus [Line Items]  
Risk/Return [Heading] AB Emerging Markets Multi-Asset Portfolio
Objective [Heading] INVESTMENT OBJECTIVE
Objective, Primary [Text Block]
The Fund’s investment objective is to maximize total return. Total return is the sum of capital appreciation and income.