First Trust Small Cap BuyWrite Income ETF Expense Example, No Redemption - First Trust Small Cap BuyWrite Income ETF - First Trust Small Cap BuyWrite Income ETF |
Dec. 31, 2025
USD ($)
|
|---|---|
| Prospectus [Line Items] | |
| Expense Example, No Redemption, 1 Year | $ 88 |
| Expense Example, No Redemption, 3 Years | 274 |
| Expense Example, No Redemption, 5 Years | 477 |
| Expense Example, No Redemption, 10 Years | $ 1,061 |