Annual Total Returns |
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 |
|---|---|---|---|---|---|---|---|---|---|---|
| BNY Mellon Opportunistic Municipal Securities Fund | A | ||||||||||
| Prospectus [Line Items] | ||||||||||
| Annual Return [Percent] | 2.88% | 2.24% | 6.69% | (9.87%) | 1.89% | 5.01% | 8.02% | 0.53% | 5.74% | (0.59%) |