Shareholder Report, Line Graph (Details) 74200012800_Franklin New York Tax-Free Income Fund_Class A_TSR Annual {Class A} - 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 A | |||||||||||
| Account Value [Line Items] | |||||||||||
| Line Graph and Table Measure Name | Class A (with sales charge) | ||||||||||
| Accumulated Value | $ 10,843 | $ 10,550 | $ 9,926 | $ 10,763 | $ 10,845 | $ 10,918 | $ 9,950 | $ 9,711 | $ 9,683 | $ 9,625 | $ 11,237 |
| 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 New York Municipal Bond Index [Member] | |||||||||||
| Account Value [Line Items] | |||||||||||
| Line Graph and Table Measure Name | Bloomberg New York Municipal Bond Index | ||||||||||
| Accumulated Value | $ 11,981 | $ 11,651 | $ 11,006 | $ 11,609 | $ 11,653 | $ 11,595 | $ 10,646 | $ 10,247 | $ 10,021 | $ 10,000 | $ 12,538 |