Alger Capital Appreciation Institutional Fund Expense Example - Class I R Shares [Member] - Alger Capital Appreciation Institutional Fund |
Oct. 31, 2025
USD ($)
|
|---|---|
| Class I | |
| Prospectus [Line Items] | |
| Expense Example, with Redemption, 1 Year | $ 127 |
| Expense Example, with Redemption, 3 Years | 397 |
| Expense Example, with Redemption, 5 Years | 686 |
| Expense Example, with Redemption, 10 Years | 1,511 |
| Class R | |
| Prospectus [Line Items] | |
| Expense Example, with Redemption, 1 Year | 173 |
| Expense Example, with Redemption, 3 Years | 536 |
| Expense Example, with Redemption, 5 Years | 923 |
| Expense Example, with Redemption, 10 Years | $ 2,009 |