S000039569 [Member] Investment Objectives and Goals - AMG TimesSquare International Small Cap Fund |
Dec. 31, 2025 |
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| 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.
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