Shareholder Report, Average Annual Return (Details) 1014041_Franklin Senior Loan ETF_Single Class_TSR Annual {Single Class} |
12 Months Ended | 60 Months Ended | 94 Months Ended |
|---|---|---|---|
Mar. 31, 2026 |
Mar. 31, 2026 |
Mar. 31, 2026 |
|
| Franklin Senior Loan ETF | |||
| Average Annual Return [Line Items] | |||
| Line Graph and Table Measure Name | Franklin Senior Loan ETF (NAV) | ||
| Average Annual Return, Percent | 2.95% | 5.15% | 4.54% |
| 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% | 1.98% |
| Morningstar LSTA U.S. Leveraged Loan 100 Index [Member] | |||
| Average Annual Return [Line Items] | |||
| Line Graph and Table Measure Name | Morningstar LSTA U.S. Leveraged Loan 100 Index | ||
| Average Annual Return, Percent | 5.94% | 5.91% | 5.27% |