Schedules of Investments (Unaudited) (Details)	Jun. 30, 2019 USD ($) oz	Mar. 31, 2019 USD ($) oz	Dec. 31, 2018 USD ($) oz	Jun. 30, 2018 USD ($) oz	Mar. 31, 2018 USD ($) oz	Dec. 31, 2017 USD ($) oz
Gold bullion (Ounce) | oz	9,474,090	9,695,079	9,009,541	8,637,702	8,725,190	7,828,465
Investment in gold bullion, cost	$ 11,930,367,963	$ 12,152,880,181	$ 11,255,129,376	$ 10,806,316,895	$ 10,859,308,652	$ 9,663,574,842
Gold bullion fair value	13,348,992,576		11,547,078,166
Less Liabilities	(2,559,780)		(2,340,020)
Net Assets	$ 13,346,432,796	$ 12,556,331,670	$ 11,544,738,146	$ 10,798,666,536	$ 11,548,425,460	$ 10,147,507,137