Annual Total Returns - Z |
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 |
Dec. 31, 2015 |
|---|---|---|---|---|---|---|---|---|---|---|
| BNY Mellon AMT-Free Municipal Bond Fund | ||||||||||
| Prospectus [Line Items] | ||||||||||
| Annual Return [Percent] | 2.33% | 6.49% | (9.41%) | 1.60% | 4.87% | 7.87% | 0.74% | 5.61% | (0.10%) | 3.92% |
| BNY Mellon High Yield Municipal Bond Fund | ||||||||||
| Prospectus [Line Items] | ||||||||||
| Annual Return [Percent] | 4.34% | 7.25% | (16.79%) | 6.13% | 2.83% | 10.11% | 1.64% | 13.10% | 0.52% | 5.24% |