Shareholder Report, Line Graph (Details) LMF3300_Western Asset High Yield Fund_Class R_TSR Annual {Class R} - USD ($) |
12 Months Ended | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
May 31, 2025 |
May 31, 2024 |
May 31, 2023 |
May 31, 2022 |
May 31, 2021 |
May 31, 2020 |
May 31, 2019 |
May 31, 2018 |
May 31, 2017 |
May 31, 2016 |
May 31, 2026 |
|
| Class R | |||||||||||
| Account Value [Line Items] | |||||||||||
| Line Graph and Table Measure Name | Class R | ||||||||||
| Accumulated Value | $ 15,080 | $ 13,852 | $ 12,522 | $ 12,899 | $ 13,877 | $ 11,947 | $ 12,035 | $ 11,612 | $ 11,280 | $ 10,000 | $ 16,307 |
| Bloomberg U.S. Aggregate Index [Member] | |||||||||||
| Account Value [Line Items] | |||||||||||
| Line Graph and Table Measure Name | Bloomberg U.S. Aggregate Index | ||||||||||
| Accumulated Value | 11,258 | 10,676 | 10,538 | 10,769 | 11,734 | 11,781 | 10,768 | 10,120 | 10,158 | 10,000 | $ 11,836 |
| Bloomberg U.S. Corporate High Yield - 2% Issuer Cap Index [Member] | |||||||||||
| Account Value [Line Items] | |||||||||||
| Line Graph and Table Measure Name | Bloomberg U.S. Corporate High Yield - 2% Issuer Cap Index | ||||||||||
| Accumulated Value | $ 16,451 | $ 15,049 | $ 13,530 | $ 13,523 | $ 14,276 | $ 12,424 | $ 12,264 | $ 11,624 | $ 11,357 | $ 10,000 | $ 17,696 |