v3.26.1
Shareholder Report, Average Annual Return (Details) 1014022_Franklin FTSE Asia Ex Japan ETF_Single Class_TSR Annual {Single Class}
12 Months Ended 60 Months Ended 98 Months Ended
Mar. 31, 2026
Mar. 31, 2026
Mar. 31, 2026
Franklin FTSE Asia Ex Japan ETF      
Average Annual Return [Line Items]      
Line Graph and Table Measure Name Franklin FTSE Asia Ex Japan ETF (NAV)    
Average Annual Return, Percent 28.30% 3.09% 5.11%
FTSE Asia Pacific ex Japan Australia and New Zealand Index-NR [Member]      
Average Annual Return [Line Items]      
Line Graph and Table Measure Name FTSE Asia Pacific ex Japan Australia and New Zealand Index-NR    
Average Annual Return, Percent 28.19% 3.50% 5.42%
FTSE Asia ex Japan Capped Index-NR [Member]      
Average Annual Return [Line Items]      
Line Graph and Table Measure Name FTSE Asia ex Japan Capped Index-NR    
Average Annual Return, Percent 28.19% 3.50% 5.46%