Shareholder Report, Line Graph (Details) 74200012400_Franklin California High Yield Municipal Fund_Class A1_TSR Annual {Class A1} - USD ($) |
12 Months Ended | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
Feb. 28, 2025 |
Feb. 29, 2024 |
Feb. 28, 2023 |
Feb. 28, 2022 |
Feb. 28, 2021 |
Feb. 29, 2020 |
Feb. 28, 2019 |
Feb. 28, 2018 |
Feb. 28, 2017 |
Feb. 29, 2016 |
Feb. 28, 2026 |
|
| Class A1 | |||||||||||
| Account Value [Line Items] | |||||||||||
| Line Graph and Table Measure Name | Class A1 (with sales charge) | ||||||||||
| Accumulated Value | $ 12,084 | $ 11,526 | $ 10,872 | $ 11,924 | $ 11,840 | $ 11,845 | $ 10,522 | $ 10,085 | $ 9,738 | $ 9,625 | $ 12,556 |
| Bloomberg Municipal Bond Index [Member] | |||||||||||
| Account Value [Line Items] | |||||||||||
| Line Graph and Table Measure Name | Bloomberg Municipal Bond Index | ||||||||||
| Accumulated Value | 12,112 | 11,764 | 11,159 | 11,759 | 11,837 | 11,713 | 10,700 | 10,276 | 10,025 | 10,000 | $ 12,713 |
| Bloomberg Municipal Bond California Exempt Index [Member] | |||||||||||
| Account Value [Line Items] | |||||||||||
| Line Graph and Table Measure Name | Bloomberg Municipal Bond California Exempt Index | ||||||||||
| Accumulated Value | $ 12,042 | $ 11,738 | $ 11,124 | $ 11,676 | $ 11,763 | $ 11,693 | $ 10,654 | $ 10,259 | $ 9,997 | $ 10,000 | $ 12,642 |