Shareholder Report, Average Annual Return (Details) 1014045_Franklin Systematic Style Premia ETF_Single Class_TSR Annual {Single Class} |
12 Months Ended | 60 Months Ended | 75 Months Ended |
|---|---|---|---|
Mar. 31, 2026 |
Mar. 31, 2026 |
Mar. 31, 2026 |
|
| Franklin Systematic Style Premia ETF | |||
| Average Annual Return [Line Items] | |||
| Line Graph and Table Measure Name | Franklin Systematic Style Premia ETF (NAV) | ||
| Average Annual Return, Percent | 13.73% | 8.63% | 4.00% |
| Russell 3000 Index [Member] | |||
| Average Annual Return [Line Items] | |||
| Line Graph and Table Measure Name | Russell 3000 Index | ||
| Average Annual Return, Percent | 18.09% | 10.87% | 13.20% |
| 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% | 0.31% | 0.90% |
| ICE BofA U.S. 3-Month Treasury Bill Index [Member] | |||
| Average Annual Return [Line Items] | |||
| Line Graph and Table Measure Name | ICE BofA U.S. 3-Month Treasury Bill Index | ||
| Average Annual Return, Percent | 4.00% | 3.34% | 2.77% |