v3.26.1
Combined Statements of Cash Flows - USD ($)
 3 Months Ended
Jun. 30, 2026
Jun. 30, 2025
Cash Flows from Operating Activities:    
Proceeds from gold bullion sold to pay expenses $ 194,167 $ 76,561
Expenses – Sponsor’s fee paid (194,167) (76,561)
Net cash provided by (used in) operating activities 0 0
Increase (decrease) in cash 0 0
Cash, beginning of period 0 0
Cash, end of period 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 (60,252,403) 10,004,601
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 194,167 76,561
Net realized (gain) loss (63,678) (2,885,981)
Net change in unrealized (appreciation) depreciation 60,141,655 (7,202,893)
Change in operating assets and liabilities:    
Sponsor’s fees payable (19,741) 7,712
Net cash provided by (used in) operating activities 0 0
Supplemental disclosure of non-cash information:    
Gold bullion contributed for Shares issued 0 45,549,915
Gold bullion distributed for Shares redeemed 0 (14,608,036)
Franklin Responsibly Sourced Gold ETF [Member]    
Cash Flows from Operating Activities:    
Proceeds from gold bullion sold to pay expenses 194,167 76,561
Expenses – Sponsor’s fee paid (194,167) (76,561)
Net cash provided by (used in) operating activities 0 0
Increase (decrease) in cash 0 0
Cash, beginning of period 0 0
Cash, end of period 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 (60,252,403) 10,004,601
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 194,167 76,561
Net realized (gain) loss (63,678) (2,885,981)
Net change in unrealized (appreciation) depreciation 60,141,655 (7,202,893)
Change in operating assets and liabilities:    
Sponsor’s fees payable (19,741) 7,712
Net cash provided by (used in) operating activities 0 0
Supplemental disclosure of non-cash information:    
Gold bullion contributed for Shares issued 0 45,549,915
Gold bullion distributed for Shares redeemed $ 0 $ (14,608,036)