v3.26.1
Investment in Gold - Schedule of changes in ounces of gold and respective fair value (Details)
 3 Months Ended 12 Months Ended
Mar. 31, 2026
USD ($)
oz
Mar. 31, 2025
USD ($)
oz
Dec. 31, 2025
USD ($)
oz
Schedule Of Changes In Ounces Of Gold And Respective Fair Value [Abstract]      
Balance at beginning (in Ounces) | oz 590,283 340,786.6 340,786.6
Creations (in Ounces) | oz 28,872.2   266,584.1
Redemptions (in Ounces) | oz (6,905.3)   (16,301)
Net realized gain (loss) from gold bullion distributed for redemptions | oz  
Transfer of gold to pay expenses (in Ounces) | oz (258.1)   (786.7)
Net realized gain (loss) from gold sold to pay expenses (in Ounces) | oz  
Change in unrealized appreciation (depreciation) on investment in gold (in Ounces) | oz  
Balance at ending (in Ounces) | oz 611,991.8   590,283
Investment in gold, fair value, beginning balance | $ $ 2,542,909,779 $ 889,742,864 $ 889,742,864
Creations | $ 144,003,541   922,113,513
Redemptions | $ (30,840,672)   (52,634,108)
Net realized gain (loss) from gold bullion distributed for redemptions | $ 17,870,604   22,098,194
Transfer of gold to pay expenses | $ (1,233,046)   (2,702,382)
Net realized gain (loss) from gold sold to pay expenses | $ (51,699)   (54,763)
Change in unrealized appreciation (depreciation) on investment in gold | $ 147,614,080 $ 188,329,307 764,346,461
Investment in gold, fair value, ending balance | $ $ 2,820,272,587   $ 2,542,909,779