Shareholder Report, Average Annual Return (Details) LMF3600_Western Asset Intermediate Bond Fund_Class A_TSR Annual {Class A} |
12 Months Ended | 60 Months Ended | 120 Months Ended |
|---|---|---|---|
May 31, 2026 |
May 31, 2026 |
May 31, 2026 |
|
| Class A | |||
| Average Annual Return [Line Items] | |||
| Line Graph and Table Measure Name | Class A (with sales charge) | ||
| Average Annual Return, Percent | 0.11% | (0.50%) | 1.39% |
| Without Sales Load [Member] | Class A | |||
| Average Annual Return [Line Items] | |||
| Line Graph and Table Measure Name | Class A | ||
| Average Annual Return, Percent | 4.01% | 0.38% | 1.83% |
| 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% |