Shareholder Report, Average Annual Return (Details) LMF3600_Western Asset Intermediate Bond 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 | 4.33% | 0.71% | 2.23% |
| Bloomberg U.S. Aggregate Index | |||
| 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 Intermediate U.S. Government/Credit Index | |||
| Average Annual Return [Line Items] | |||
| Line Graph and Table Measure Name | Bloomberg Intermediate U.S. Government/Credit Index | ||
| Average Annual Return, Percent | 4.13% | 1.22% | 2.06% |