v3.25.4
Investment Objectives and Goals - AB Concentrated International Growth Portfolio
Jun. 30, 2025
Prospectus [Line Items]  
Risk/Return [Heading] SUMMARY INFORMATIONAB International Growth Portfolio(formerly, AB Concentrated International Growth Portfolio)
Objective [Heading] INVESTMENT OBJECTIVE
Objective, Primary [Text Block]
The Fund’s investment objective is to seek long-term growth of capital.