Statements of Assets and Liabilities (Unaudited) (Parentheticals) - USD ($) $ / shares in Thousands	Sep. 30, 2025	Dec. 31, 2024
Investment in gold bullion, cost	$ 31,460,481,938	$ 21,152,229,978
Shares, par value (in dollars per share)	$ 0	$ 0
Shares, issued (in shares)	820,650,000	668,650,000