S000094554 [Member] Expense Example - Franklin Short-Term Municipal Income ETF - Franklin Short-Term Municipal Income ETF |
Oct. 01, 2025
USD ($)
|
|---|---|
| Prospectus [Line Items] | |
| Expense Example, with Redemption, 1 Year | $ 20 |
| Expense Example, with Redemption, 3 Years | $ 63 |