Alger Mid Cap Growth Institutional Fund Shareholder Fees - Class I R Shares [Member] - Alger Mid Cap Growth Institutional Fund |
Oct. 31, 2025
USD ($)
|
|---|---|
| Class I | |
| Prospectus [Line Items] | |
| Shareholder Fee, Other | $ 0 |
| Class R | |
| Prospectus [Line Items] | |
| Shareholder Fee, Other | $ 0 |