v3.26.1
S000016644 [Member] Expense Example, No Redemption - Western Asset California Municipals Fund
Feb. 28, 2026
USD ($)
Class C  
Prospectus [Line Items]  
Expense Example, No Redemption, 1 Year $ 151
Expense Example, No Redemption, 3 Years 468
Expense Example, No Redemption, 5 Years 808
Expense Example, No Redemption, 10 Years 1,622
Class I  
Prospectus [Line Items]  
Expense Example, No Redemption, 1 Year 72
Expense Example, No Redemption, 3 Years 246
Expense Example, No Redemption, 5 Years 434
Expense Example, No Redemption, 10 Years 980
Class A  
Prospectus [Line Items]  
Expense Example, No Redemption, 1 Year 467
Expense Example, No Redemption, 3 Years 663
Expense Example, No Redemption, 5 Years 875
Expense Example, No Redemption, 10 Years 1,486
Class FI  
Prospectus [Line Items]  
Expense Example, No Redemption, 1 Year 102
Expense Example, No Redemption, 3 Years 353
Expense Example, No Redemption, 5 Years 624
Expense Example, No Redemption, 10 Years 1,395
Class IS  
Prospectus [Line Items]  
Expense Example, No Redemption, 1 Year 68
Expense Example, No Redemption, 3 Years 223
Expense Example, No Redemption, 5 Years 391
Expense Example, No Redemption, 10 Years $ 879