v3.25.2
Investment Objectives and Goals - Franklin Short Duration U.S. Government ETF
Mar. 31, 2025
Prospectus [Line Items]  
Risk/Return [Heading] FRANKLIN SHORT DURATION U.S. GOVERNMENT ETF
Objective [Heading] Investment Goal
Objective, Primary [Text Block]

A high level of current income as is consistent with prudent investing, while seeking preservation of capital.