v3.26.1
S000056045 [Member] Expense Example - AMG Yacktman Global Fund
Dec. 31, 2025
USD ($)
Class N  
Prospectus [Line Items]  
Expense Example, with Redemption, 1 Year $ 115
Expense Example, with Redemption, 3 Years 385
Expense Example, with Redemption, 5 Years 675
Expense Example, with Redemption, 10 Years 1,501
Class I  
Prospectus [Line Items]  
Expense Example, with Redemption, 1 Year 95
Expense Example, with Redemption, 3 Years 322
Expense Example, with Redemption, 5 Years 568
Expense Example, with Redemption, 10 Years $ 1,272