Schedules of Investments (Unaudited) (Details)	Mar. 31, 2019 USD ($) oz	Dec. 31, 2018 USD ($) oz	Mar. 31, 2018 USD ($) oz	Dec. 31, 2017 USD ($) oz
Gold bullion (Ounce) | oz	9,695,079	9,009,541	8,725,190	7,828,465
Investment in gold bullion, cost	$ 12,152,880,181	$ 11,255,129,376	$ 10,859,308,652	$ 9,663,574,842
Gold bullion fair value	12,559,005,466	11,547,078,166
Less Liabilities	(2,673,796)	(2,340,020)
Net Assets	$ 12,556,331,670	$ 11,544,738,146		$ 10,147,507,137