v3.26.1
Investment in Gold - Schedule of Changes in Ounces of Gold and the Respective Fair Value (Details) - Gold [Member]
 12 Months Ended
Jan. 31, 2026
USD ($)
oz
Jan. 31, 2025
USD ($)
oz
Jan. 31, 2024
USD ($)
oz
Schedule of Changes in Ounces of Gold and the Respective Fair Value [Line Items]      
Beginning balance, Ounces | oz 469,450 383,204 341,282
Beginning balance, Fair Value | $ $ 1,314,597,403 $ 780,184,353 $ 656,592,807
Gold bullion contributed, Ounces | oz 140,180 89,807 56,653
Gold bullion contributed, Fair Value | $ $ 522,477,839 $ 227,982,044 $ 112,428,811
Gold bullion distributed, Ounces | oz (9,558) (3,561) (14,731)
Gold bullion distributed, Fair Value | $ $ (31,484,544) $ (9,295,825) $ (28,535,230)
Realized gain (loss) from gold distributed from in-kind, Ounces | oz
Realized gain (loss) from gold distributed from in-kind, Fair Value | $ $ 12,284,110 $ 2,788,531 $ 3,399,475
Change in unrealized appreciation (depreciation), Ounces | oz
Change in unrealized appreciation (depreciation), Fair Value | $ $ 1,085,411,124 $ 312,938,300 $ 36,298,490
Ending balance, Ounces | oz 600,072 469,450 383,204
Ending balance, Fair value | $ $ 2,903,285,932 $ 1,314,597,403 $ 780,184,353