v3.26.1
Annual Total Returns
12 Months Ended
Dec. 31, 2025
Dec. 31, 2024
Dec. 31, 2023
Dec. 31, 2022
Dec. 31, 2021
First Trust Equity Market Neutral ETF | First Trust Equity Market Neutral ETF          
Prospectus [Line Items]          
Annual Return [Percent] 6.91% 0.42% 2.56% 3.46% 0.56%