Shareholder Report, Line Graph (Details) 1014045_Franklin Systematic Style Premia ETF_Single Class_TSR Annual {Single Class} - USD ($) |
12 Months Ended | |||||||
|---|---|---|---|---|---|---|---|---|
Mar. 31, 2025 |
Mar. 31, 2024 |
Mar. 31, 2023 |
Mar. 31, 2022 |
Mar. 31, 2021 |
Mar. 31, 2020 |
Dec. 18, 2019 |
Mar. 31, 2026 |
|
| Franklin Systematic Style Premia ETF | ||||||||
| Account Value [Line Items] | ||||||||
| Line Graph and Table Measure Name | Franklin Systematic Style Premia ETF (NAV) | |||||||
| Accumulated Value | $ 11,251 | $ 10,833 | $ 9,604 | $ 9,313 | $ 8,460 | $ 9,266 | $ 10,000 | $ 12,796 |
| Russell 3000 Index [Member] | ||||||||
| Account Value [Line Items] | ||||||||
| Line Graph and Table Measure Name | Russell 3000 Index | |||||||
| Accumulated Value | 18,236 | 17,008 | 13,154 | 14,389 | 12,856 | 7,910 | 10,000 | $ 21,534 |
| Bloomberg U.S. Aggregate Index [Member] | ||||||||
| Account Value [Line Items] | ||||||||
| Line Graph and Table Measure Name | Bloomberg U.S. Aggregate Index | |||||||
| Accumulated Value | 10,112 | 9,641 | 9,481 | 9,957 | 10,388 | 10,315 | 10,000 | $ 10,552 |
| ICE BofA U.S. 3-Month Treasury Bill Index [Member] | ||||||||
| Account Value [Line Items] | ||||||||
| Line Graph and Table Measure Name | ICE BofA U.S. 3-Month Treasury Bill Index | |||||||
| Accumulated Value | $ 11,410 | $ 10,869 | $ 10,328 | $ 10,076 | $ 10,069 | $ 10,057 | $ 10,000 | $ 11,866 |