Investment Objectives and Goals - First Trust RBA Deglobalization ETF	Aug. 07, 2025
Prospectus [Line Items]
Risk/Return [Heading]	<span style="color:#000000;font-family:Arial;font-size:12.60pt;font-weight:bold;">First Trust RBA Deglobalization ETF (DGLO)</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 RBA Deglobalization ETF (the “Fund”) seeks investment results that correspond generally to the price and yield (before the Fund’s fees and expenses) of an index called the Richard Bernstein Advisors U.S. Deglobalization Index (the “Index”).