v3.26.1
Combined Statements of Cash Flows - USD ($)
 12 Months Ended
Mar. 31, 2026
Mar. 31, 2025
Cash Flows from Operating Activities:    
Proceeds from gold bullion sold to pay expenses $ 491,723 $ 129,448
Expenses – Sponsor’s fee paid (491,723) (129,448)
Net cash provided by (used in) operating activities 0 0
Increase (decrease) in cash 0 0
Cash, beginning of year 0 0
Cash, end of year 0 0
Reconciliation of Net Increase (Decrease) in Net Assets Resulting from Operations to Net Cash Provided by (Used in) Operating Activities:    
Net increase (decrease) in net assets resulting from operations 132,107,674 34,588,017
Adjustments to reconcile net increase (decrease) in net assets resulting from operations to net cash provided by (used in) operating activities:    
Proceeds from gold bullion sold to pay expenses 491,723 129,448
Net realized gain (loss) (18,201,941) (4,270,206)
Net change in unrealized appreciation (depreciation) (114,446,198) (30,460,624)
Change in operating assets and liabilities:    
Sponsor’s fee payable 48,742 13,365
Net cash provided by (used in) operating activities 0 0
Supplemental disclosure of non-cash information:    
Gold bullion contributed for Shares issued 215,191,777 116,418,428
Gold bullion distributed for Shares redeemed (58,651,177) (26,173,315)
Franklin Responsibly Sourced Gold ETF [Member]    
Cash Flows from Operating Activities:    
Proceeds from gold bullion sold to pay expenses 491,723 129,448
Expenses – Sponsor’s fee paid (491,723) (129,448)
Net cash provided by (used in) operating activities 0 0
Increase (decrease) in cash 0 0
Cash, beginning of year 0 0
Cash, end of year 0 0
Reconciliation of Net Increase (Decrease) in Net Assets Resulting from Operations to Net Cash Provided by (Used in) Operating Activities:    
Net increase (decrease) in net assets resulting from operations 132,107,674 34,588,017
Adjustments to reconcile net increase (decrease) in net assets resulting from operations to net cash provided by (used in) operating activities:    
Proceeds from gold bullion sold to pay expenses 491,723 129,448
Net realized gain (loss) (18,201,941) (4,270,206)
Net change in unrealized appreciation (depreciation) (114,446,198) (30,460,624)
Change in operating assets and liabilities:    
Sponsor’s fee payable 48,742 13,365
Net cash provided by (used in) operating activities 0 0
Supplemental disclosure of non-cash information:    
Gold bullion contributed for Shares issued 215,191,777 116,418,428
Gold bullion distributed for Shares redeemed $ (58,651,177) $ (26,173,315)