v3.26.1
Shareholder Report, Average Annual Return (Details) LMF6800_Western Asset Total Return Unconstrained Fund_Class R_TSR Annual {Class R}
12 Months Ended 60 Months Ended 120 Months Ended
May 31, 2026
May 31, 2026
May 31, 2026
Class R      
Average Annual Return [Line Items]      
Line Graph and Table Measure Name Class R    
Average Annual Return, Percent 3.61% (0.18%) 1.75%
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%
ICE BofA 3-Month U.S. Treasury Bill Index      
Average Annual Return [Line Items]      
Line Graph and Table Measure Name ICE BofA 3-Month U.S. Treasury Bill Index    
Average Annual Return, Percent 3.88% 3.46% 2.32%