v3.25.4
First Trust Intermediate Government Opportunities ETF Investment Objectives and Goals - First Trust Intermediate Government Opportunities ETF
Oct. 31, 2025
Prospectus [Line Items]  
Risk/Return [Heading] <span style="font-family:Arial;font-size:12.60pt;font-weight:bold;">First Trust Intermediate Government Opportunities ETF (MGOV)</span>
Objective [Heading] <span style="color:#000000;font-family:Arial;font-size:9.90pt;font-weight:bold;">Investment Objective</span>
Objective, Primary [Text Block] The First Trust Intermediate Government Opportunities ETF seeks to maximize long-term total return.