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S000039569 [Member] Investment Objectives and Goals - AMG TimesSquare International Small Cap Fund
Dec. 31, 2025
Prospectus [Line Items]  
Risk/Return [Heading] AMG TimesSquare International Small Cap Fund
Objective [Heading] Investment Objective
Objective, Primary [Text Block]
The AMG TimesSquare International Small Cap Fund's (the “Fund”) investment objective is to seek long-term capital appreciation.