v3.26.3
Investment Objectives and Goals
Mar. 31, 2026
Franklin US Equity Bitcoin DRIP Index ETF  
Prospectus [Line Items]  
Risk/Return [Heading] FRANKLIN US EQUITY BITCOIN DRIP INDEX ETF
Objective [Heading] Investment Goal
Objective, Primary [Text Block]

To seek to provide investment results that closely correspond, before fees and expenses, to the performance of the VettaFi US Large-Cap 500 Bitcoin DRIP Index (the Underlying Index).

Franklin US Innovation Bitcoin DRIP Index ETF  
Prospectus [Line Items]  
Risk/Return [Heading] FRANKLIN US INNOVATION BITCOIN DRIP INDEX ETF
Objective [Heading] Investment Goal
Objective, Primary [Text Block]

To seek to provide investment results that closely correspond, before fees and expenses, to the performance of the VettaFi US Innovation 100 Bitcoin DRIP Index (the Underlying Index).