Shareholder Report, Line Graph (Details) LMF2900_Western Asset Income Fund_Class C1_TSR Annual {Class C1} - USD ($) |
12 Months Ended | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
Jul. 31, 2025 |
Jul. 31, 2024 |
Jul. 31, 2023 |
Jul. 31, 2022 |
Jul. 31, 2021 |
Jul. 31, 2020 |
Jul. 31, 2019 |
Jul. 31, 2018 |
Jul. 31, 2017 |
Jul. 31, 2016 |
Jul. 31, 2026 |
|
| Class C1 | |||||||||||
| Account Value [Line Items] | |||||||||||
| Line Graph and Table Measure Name | Class C1 (with sales charge) | ||||||||||
| Accumulated Value | $ 12,848 | $ 12,092 | $ 11,226 | $ 11,046 | $ 12,296 | $ 11,393 | $ 11,419 | $ 10,729 | $ 10,721 | $ 10,000 | $ 13,378 |
| Bloomberg U.S. Aggregate Index [Member] | |||||||||||
| Account Value [Line Items] | |||||||||||
| Line Graph and Table Measure Name | Bloomberg U.S. Aggregate Index | ||||||||||
| Accumulated Value | 11,130 | 10,766 | 10,243 | 10,600 | 11,664 | 11,746 | 10,666 | 9,869 | 9,949 | 10,000 | $ 11,431 |
| Bloomberg U.S. Universal Index [Member] | |||||||||||
| Account Value [Line Items] | |||||||||||
| Line Graph and Table Measure Name | Bloomberg U.S. Universal Index | ||||||||||
| Accumulated Value | $ 11,535 | $ 11,091 | $ 10,492 | $ 10,749 | $ 11,886 | $ 11,842 | $ 10,819 | $ 10,002 | $ 10,059 | $ 10,000 | $ 11,884 |