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First Trust Limited Duration Investment Grade Corporation ETF Annual Total Returns
12 Months Ended
Dec. 31, 2025
Dec. 31, 2024
Dec. 31, 2023
Dec. 31, 2022
First Trust Limited Duration Investment Grade Corporation ETF | FT Limited Duration Investment Grade Corporation ETF        
Prospectus [Line Items]        
Annual Return [Percent] 6.65% 4.27% 6.10% (4.38%)