v3.25.2
First Trust Indxx Medical Devices ETF Annual Fund Operating Expenses - First Trust Indxx Medical Devices ETF - First Trust Indxx Medical Devices ETF
Mar. 31, 2025
Prospectus [Line Items]  
Management Fees (as a percentage of Assets) 0.70%
Distribution and Service (12b-1) Fees 0.00%
Other Expenses (as a percentage of Assets): 0.00%
Expenses (as a percentage of Assets) 0.70%