S000000586 [Member] Expense Example - BARON FIFTH AVENUE GROWTH FUND |
Sep. 30, 2025
USD ($)
|
|---|---|
| BARON FIFTH AVENUE GROWTH FUND | |
| Prospectus [Line Items] | |
| Expense Example, with Redemption, 1 Year | $ 102 |
| Expense Example, with Redemption, 3 Years | 318 |
| Expense Example, with Redemption, 5 Years | 552 |
| Expense Example, with Redemption, 10 Years | 1,225 |
| Institutional Shares | |
| Prospectus [Line Items] | |
| Expense Example, with Redemption, 1 Year | 77 |
| Expense Example, with Redemption, 3 Years | 240 |
| Expense Example, with Redemption, 5 Years | 417 |
| Expense Example, with Redemption, 10 Years | 930 |
| R6 Shares | |
| Prospectus [Line Items] | |
| Expense Example, with Redemption, 1 Year | 77 |
| Expense Example, with Redemption, 3 Years | 240 |
| Expense Example, with Redemption, 5 Years | 417 |
| Expense Example, with Redemption, 10 Years | $ 930 |