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 |
|
| AMERICAN HIGH-INCOME MUNICIPAL BOND FUND (Class A, Class C, Class F-1, Class F-2, Class F-3) | Class F-2 | ||||||||||
| Prospectus [Line Items] | ||||||||||
| Annual Return [Percent] | 4.56% | 6.49% | 8.17% | (11.64%) | 5.75% | 4.62% | 9.12% | 1.79% | 8.69% | 1.74% |
| AMERICAN HIGH-INCOME MUNICIPAL BOND FUND (Class R6) | Class R-6 | ||||||||||
| Prospectus [Line Items] | ||||||||||
| Annual Return [Percent] | 4.66% | 6.60% | 8.28% | (11.55%) | 5.86% | 4.73% | 9.24% | 1.89% | 8.83% | 1.85% |