Class A C F I I And Class I S [Member] Investment Objectives and Goals - Class A, C, FI, I and Class IS - Western Asset Short Duration Municipal Income Fund |
Feb. 28, 2025 |
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| Prospectus [Line Items] | |
| Risk/Return [Heading] | WESTERN ASSET SHORT DURATION MUNICIPAL INCOME FUND |
| Objective [Heading] | Investment objective |
| Objective, Primary [Text Block] | The fund seeks to generate high current income exempt from regular federal income tax while preserving capital.
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