Alger Capital Appreciation Fund Expense Example - Class A C Shares [Member] - Alger Capital Appreciation Fund |
Oct. 31, 2025
USD ($)
|
|---|---|
| Class A | |
| Prospectus [Line Items] | |
| Expense Example, with Redemption, 1 Year | $ 649 |
| Expense Example, with Redemption, 3 Years | 910 |
| Expense Example, with Redemption, 5 Years | 1,190 |
| Expense Example, with Redemption, 10 Years | 1,989 |
| Class C | |
| Prospectus [Line Items] | |
| Expense Example, with Redemption, 1 Year | 308 |
| Expense Example, with Redemption, 3 Years | 643 |
| Expense Example, with Redemption, 5 Years | 1,103 |
| Expense Example, with Redemption, 10 Years | $ 2,379 |