Shareholder Report, Line Graph (Details) 1014047_Franklin Disruptive Commerce 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 |
Feb. 25, 2020 |
Mar. 31, 2026 |
|
| Franklin Disruptive Commerce ETF | ||||||||
| Account Value [Line Items] | ||||||||
| Line Graph and Table Measure Name | Franklin Disruptive Commerce ETF (NAV) | |||||||
| Accumulated Value | $ 13,818 | $ 13,014 | $ 9,693 | $ 12,482 | $ 19,684 | $ 8,528 | $ 10,000 | $ 12,983 |
| Russell 3000 Index [Member] | ||||||||
| Account Value [Line Items] | ||||||||
| Line Graph and Table Measure Name | Russell 3000 Index | |||||||
| Accumulated Value | $ 19,883 | $ 18,545 | $ 14,343 | $ 15,689 | $ 14,018 | $ 8,625 | $ 10,000 | $ 23,479 |