First Trust Municipal High Income ETF Expense Example, No Redemption - First Trust Municipal High Income ETF - First Trust Municipal High Income ETF |
Jul. 31, 2025
USD ($)
|
|---|---|
| Prospectus [Line Items] | |
| Expense Example, No Redemption, 1 Year | $ 72 |
| Expense Example, No Redemption, 3 Years | 224 |
| Expense Example, No Redemption, 5 Years | 390 |
| Expense Example, No Redemption, 10 Years | $ 871 |