Shareholder Report, Line Graph (Details) LMF3600_Western Asset Intermediate Bond Fund_Class IS_TSR Annual {Class IS} - 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 IS | |||||||||||
| Account Value [Line Items] | |||||||||||
| Line Graph and Table Measure Name | Class IS | ||||||||||
| Accumulated Value | $ 1,194,989 | $ 1,119,463 | $ 1,090,257 | $ 1,103,704 | $ 1,203,337 | $ 1,169,859 | $ 1,094,080 | $ 1,034,531 | $ 1,030,064 | $ 1,000,000 | $ 1,246,757 |
| Bloomberg U.S. Aggregate Index | |||||||||||
| Account Value [Line Items] | |||||||||||
| Line Graph and Table Measure Name | Bloomberg U.S. Aggregate Index | ||||||||||
| Accumulated Value | 1,125,849 | 1,067,571 | 1,053,813 | 1,076,889 | 1,173,363 | 1,178,133 | 1,076,751 | 1,011,981 | 1,015,786 | 1,000,000 | $ 1,183,642 |
| Bloomberg Intermediate U.S. Government/Credit Index | |||||||||||
| Account Value [Line Items] | |||||||||||
| Line Graph and Table Measure Name | Bloomberg Intermediate U.S. Government/Credit Index | ||||||||||
| Accumulated Value | $ 1,177,151 | $ 1,105,778 | $ 1,077,071 | $ 1,082,809 | $ 1,153,907 | $ 1,145,567 | $ 1,064,655 | $ 1,006,966 | $ 1,013,992 | $ 1,000,000 | $ 1,225,738 |