Class C2 [Member] Annual Total Returns |
12 Months Ended | ||||
|---|---|---|---|---|---|
Dec. 31, 2025 |
Dec. 31, 2024 |
Dec. 31, 2023 |
Dec. 31, 2022 |
Dec. 31, 2021 |
|
| Class C2 | Western Asset Short Duration Municipal Income Fund | Class C2 | |||||
| Prospectus [Line Items] | |||||
| Annual Return [Percent] | 3.83% | 1.48% | 3.11% | (3.80%) | (0.31%) |