v3.26.1
Shareholder Report, Average Annual Return (Details) 1014059_BrandywineGLOBAL - U.S. Fixed Income ETF_Single Class_TSR Annual {Single Class}
12 Months Ended 32 Months Ended
Mar. 31, 2026
Mar. 31, 2026
BrandywineGLOBAL - U.S. Fixed Income ETF    
Average Annual Return [Line Items]    
Line Graph and Table Measure Name BrandywineGLOBAL - U.S. Fixed Income ETF (NAV)  
Average Annual Return, Percent 4.87% 3.76%
Bloomberg U.S. Aggregate Index [Member]    
Average Annual Return [Line Items]    
Line Graph and Table Measure Name Bloomberg U.S. Aggregate Index  
Average Annual Return, Percent 4.35% 4.30%