v3.25.4
First Trust Dorsey Wright International Focus 5 ETF Expense Example, No Redemption - First Trust Dorsey Wright International Focus 5 ETF - First Trust Dorsey Wright International Focus 5 ETF
Sep. 30, 2025
USD ($)
Prospectus [Line Items]  
Expense Example, No Redemption, 1 Year $ 116
Expense Example, No Redemption, 3 Years 362
Expense Example, No Redemption, 5 Years 628
Expense Example, No Redemption, 10 Years $ 1,386