Shareholder Report, Average Annual Return (Details) LMF3300_Western Asset High Yield Fund_Class IS_TSR Annual {Class IS} |
12 Months Ended | 60 Months Ended | 120 Months Ended |
|---|---|---|---|
May 31, 2026 |
May 31, 2026 |
May 31, 2026 |
|
| Class IS | |||
| Average Annual Return [Line Items] | |||
| Line Graph and Table Measure Name | Class IS | ||
| Average Annual Return, Percent | 8.66% | 3.94% | 5.68% |
| Bloomberg U.S. Aggregate Index [Member] | |||
| Average Annual Return [Line Items] | |||
| Line Graph and Table Measure Name | Bloomberg U.S. Aggregate Index | ||
| Average Annual Return, Percent | 5.13% | 0.17% | 1.70% |
| Bloomberg U.S. Corporate High Yield - 2% Issuer Cap Index [Member] | |||
| Average Annual Return [Line Items] | |||
| Line Graph and Table Measure Name | Bloomberg U.S. Corporate High Yield - 2% Issuer Cap Index | ||
| Average Annual Return, Percent | 7.57% | 4.39% | 5.87% |