v3.26.1
Combined Statements of Assets and Liabilities (Parentheticals) - USD ($)
12 Months Ended
Mar. 31, 2026
Mar. 31, 2025
Cost of investment in gold bullion $ 319,559,905 $ 145,309,087
Shares, no par value (in Dollars per share) $ 0 $ 0
Shares authorized, unlimited Unlimited Unlimited
Franklin Responsibly Sourced Gold ETF [Member]    
Cost of investment in gold bullion $ 319,559,905 $ 145,309,087
Shares, no par value (in Dollars per share) $ 0 $ 0
Shares authorized, unlimited Unlimited Unlimited