v3.25.2
First Trust SMID Capital Strength ETF Annual Fund Operating Expenses - First Trust SMID Capital Strength ETF - First Trust SMID Capital Strength ETF
Mar. 31, 2025
Prospectus [Line Items]  
Management Fees (as a percentage of Assets) 0.60%
Distribution and Service (12b-1) Fees 0.00%
Other Expenses (as a percentage of Assets): 0.00%
Acquired Fund Fees and Expenses 0.60%