Schedules of Investments - Investments (Details)	Dec. 31, 2019 USD ($) oz	Dec. 31, 2018 USD ($) oz	Dec. 31, 2017 USD ($) oz	Dec. 31, 2016 USD ($) oz
Gold bullion (Ounce) | oz	11,577,252	9,009,541	7,828,465	6,308,062
Investment in gold bullion, cost	$ 15,094,673,874	$ 11,255,129,376	$ 9,663,574,842	$ 7,706,923,343
Gold bullion fair value	17,632,155,037	11,547,078,166
Less Liabilities	(3,629,955)	(2,340,020)
Net Assets	$ 17,628,525,082	$ 11,544,738,146	$ 10,147,507,137	$ 7,310,131,020