Statements of Changes in Net Assets (Unaudited) - USD ($)	3 Months Ended				6 Months Ended
	Jun. 30, 2020	Mar. 31, 2020	Jun. 30, 2019	Mar. 31, 2019	Jun. 30, 2020	Jun. 30, 2019
Net Assets, Beginning of Period	$ 20,223,180,272	$ 17,628,525,082	$ 12,556,331,670	$ 11,544,738,146	$ 17,628,525,082	$ 11,544,738,146
Operations:
Net investment loss	(14,632,446)	(11,818,169)	(7,621,405)	(7,619,352)	(26,450,615)	(15,240,757)
Net realized gain	58,420,248	151,646,482	22,410,307	5,847,432	210,066,730	28,257,739
Net change in unrealized appreciation/depreciation	2,078,877,217	831,013,860	1,012,499,328	114,176,495	2,909,891,077	1,126,675,823
Net increase in net assets resulting from operations	2,122,665,019	970,842,173	1,027,288,230	112,404,575	3,093,507,192	1,139,692,805
Capital Share Transactions:
Contributions for Shares issued	3,865,881,490	2,615,209,304	739,781,522	1,064,902,289
Distributions for Shares redeemed	(299,101,991)	(991,396,287)	(976,968,626)	(165,713,340)
Net increase (decrease) in net assets from capital share transactions	3,566,779,499	1,623,813,017	(237,187,104)	899,188,949
Increase in net assets	5,689,444,518	2,594,655,190	790,101,126	1,011,593,524
Net Assets, End of Period	$ 25,912,624,790	$ 20,223,180,272	$ 13,346,432,796	$ 12,556,331,670	$ 25,912,624,790	$ 13,346,432,796
Shares issued and redeemed
Shares issued (in shares)					409,250,000	142,600,000
Shares redeemed (in shares)					(85,000,000)	(92,900,000)
Net increase in Shares issued and outstanding (in shares)					324,250,000	49,700,000