Significant Accounting Policies - Schedule of Investments at Fair Value (Details) - USD ($)	Jul. 31, 2025	Jan. 31, 2025
Level 1 [Member]
Schedule of Investments at Fair Value [Line Items]
Investment at fair value	$ 1,763,218,236	$ 1,314,597,403
Level 2 [Member]
Schedule of Investments at Fair Value [Line Items]
Investment at fair value
Level 3 [Member]
Schedule of Investments at Fair Value [Line Items]
Investment at fair value
Investment in Gold [Member] | Level 1 [Member]
Schedule of Investments at Fair Value [Line Items]
Investment at fair value	1,763,218,236	1,314,597,403
Investment in Gold [Member] | Level 2 [Member]
Schedule of Investments at Fair Value [Line Items]
Investment at fair value
Investment in Gold [Member] | Level 3 [Member]
Schedule of Investments at Fair Value [Line Items]
Investment at fair value