First Trust Alternative Absolute Return Strategy ETF Expense Example, No Redemption - First Trust Alternative Absolute Return Strategy ETF - First Trust Alternative Absolute Return Strategy ETF |
Dec. 31, 2025
USD ($)
|
|---|---|
| Prospectus [Line Items] | |
| Expense Example, No Redemption, 1 Year | $ 100 |
| Expense Example, No Redemption, 3 Years | 312 |
| Expense Example, No Redemption, 5 Years | 542 |
| Expense Example, No Redemption, 10 Years | $ 1,201 |