v3.26.1
Label Element Value
Franklin Senior Loan ETF | Senior Loans [Member]  
Holdings [Line Items] oef_HoldingsLineItems  
Percent of Total Investments oef_PctOfTotalInv 87.30%
Franklin Senior Loan ETF | Corporate Bonds & Notes [Member]  
Holdings [Line Items] oef_HoldingsLineItems  
Percent of Total Investments oef_PctOfTotalInv 4.20%
Franklin Senior Loan ETF | Investments in Underlying Funds [Member]  
Holdings [Line Items] oef_HoldingsLineItems  
Percent of Total Investments oef_PctOfTotalInv 2.70%
Franklin Senior Loan ETF | Asset-Backed Securities [Member]  
Holdings [Line Items] oef_HoldingsLineItems  
Percent of Total Investments oef_PctOfTotalInv 0.30%
Franklin Senior Loan ETF | Common Stocks [Member]  
Holdings [Line Items] oef_HoldingsLineItems  
Percent of Total Investments oef_PctOfTotalInv 0.00%
Franklin Senior Loan ETF | Short-Term Investments [Member]  
Holdings [Line Items] oef_HoldingsLineItems  
Percent of Total Investments oef_PctOfTotalInv 5.50%