Financial Highlights - Schedule of Financial Highlights (Details) - $ / shares		3 Months Ended		6 Months Ended
		Jul. 31, 2025	Jul. 31, 2024	Jul. 31, 2025	Jul. 31, 2024
Financial Highlights [Abstract]
Net asset value per share, beginning of period		$ 31.76	$ 22.14	$ 27.01	$ 19.69
Total return, at net asset value	[1]	(0.16%)	6.87%	17.40%	20.16%
Ratio to average net assets(c)
Net investment loss	[2]	(0.25%)	(0.25%)	(0.25%)	(0.25%)
Net expenses	[2]	0.25%	0.25%	0.25%	0.25%
Net investment loss	[3]	$ (0.02)	$ (0.01)	$ (0.04)	$ (0.03)
Net realized and unrealized gain (loss) on investment in gold bullion		(0.03)	1.53	4.74	4
Net change in net assets from operations		(0.05)	1.52	4.7	3.97
Net asset value per share, end of period		$ 31.71	$ 23.66	$ 31.71	$ 23.66

[1] Not annualized

[2] Annualized

[3] Calculated using average shares outstanding