S000009868 [Member] Expense Example - AMG GW&K ESG Bond Fund |
Dec. 31, 2025
USD ($)
|
|---|---|
| Class N | |
| Prospectus [Line Items] | |
| Expense Example, with Redemption, 1 Year | $ 69 |
| Expense Example, with Redemption, 3 Years | 226 |
| Expense Example, with Redemption, 5 Years | 397 |
| Expense Example, with Redemption, 10 Years | 891 |
| Class I | |
| Prospectus [Line Items] | |
| Expense Example, with Redemption, 1 Year | 49 |
| Expense Example, with Redemption, 3 Years | 163 |
| Expense Example, with Redemption, 5 Years | 287 |
| Expense Example, with Redemption, 10 Years | $ 649 |