Alger Responsible Investing Fund Expense Example - Class A C Shares [Member] - Alger Responsible Investing Fund |
Oct. 31, 2025
USD ($)
|
|---|---|
| Class A | |
| Prospectus [Line Items] | |
| Expense Example, with Redemption, 1 Year | $ 631 |
| Expense Example, with Redemption, 3 Years | 877 |
| Expense Example, with Redemption, 5 Years | 1,152 |
| Expense Example, with Redemption, 10 Years | 1,936 |
| Class C | |
| Prospectus [Line Items] | |
| Expense Example, with Redemption, 1 Year | 306 |
| Expense Example, with Redemption, 3 Years | 637 |
| Expense Example, with Redemption, 5 Years | 1,093 |
| Expense Example, with Redemption, 10 Years | $ 2,358 |