Shareholder Report, Average Annual Return (Details) 374408_Franklin Small Cap Enhanced ETF_Single Class_TSR Annual {Single Class} |
4 Months Ended | 12 Months Ended |
|---|---|---|
Mar. 31, 2026 |
Mar. 31, 2026 |
|
| Franklin Small Cap Enhanced ETF | ||
| Average Annual Return [Line Items] | ||
| Line Graph and Table Measure Name | Franklin Small Cap Enhanced ETF (NAV) | |
| Average Annual Return, Percent | (0.90%) | |
| Russell 1000 Index [Member] | ||
| Average Annual Return [Line Items] | ||
| Line Graph and Table Measure Name | Russell 1000 Index | |
| Average Annual Return, Percent | 32.71% | |
| Russell 2000 Index [Member] | ||
| Average Annual Return [Line Items] | ||
| Line Graph and Table Measure Name | Russell 2000 Index | |
| Average Annual Return, Percent | (0.77%) |