S000001251 [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 |
|
| CALIFORNIA TAX-EXEMPT FUND | CALIFORNIA TAX-EXEMPT FUND | ||||||||||
| Prospectus [Line Items] | ||||||||||
| Annual Return [Percent] | 3.95% | 1.64% | 6.27% | (10.40%) | 0.98% | 5.01% | 7.41% | 1.00% | 5.05% | (0.18%) |