Shareholder Report, Line Graph (Details) 74200007900_Franklin Louisiana Tax-Free Income 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 | $ 11,148 | $ 10,772 | $ 10,210 | $ 11,031 | $ 11,034 | $ 11,008 | $ 10,104 | $ 9,767 | $ 9,667 | $ 9,625 | $ 11,498 |
| 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 |