S000024707 [Member] Annual Total Returns |
12 Months Ended | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|
Dec. 31, 2025 |
Dec. 31, 2024 |
Dec. 31, 2023 |
Dec. 31, 2022 |
Dec. 31, 2021 |
Dec. 31, 2020 |
Dec. 31, 2019 |
Dec. 31, 2018 |
Dec. 31, 2017 |
Dec. 31, 2016 |
|
| Baron International Growth Fund | Retail Shares | ||||||||||
| Prospectus [Line Items] | ||||||||||
| Annual Return [Percent] | 20.81% | 4.11% | 7.33% | (27.47%) | 9.64% | 30.52% | 29.06% | (17.90%) | 36.94% | 1.14% |