Statements of Changes in Net Assets - USD ($)	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Net Assets, Beginning of Year	$ 26,154,892,134	$ 28,723,023,637	$ 31,918,269,136
Operations:
Net investment loss	(67,766,849)	(71,451,301)	(72,773,331)
Net realized gain	935,795,342	583,770,788	578,252,839
Net change in unrealized appreciation/depreciation	2,383,885,667	(1,051,283,081)	(1,904,612,983)
Net increase (decrease) in net assets resulting from operations	3,251,914,160	(538,963,594)	(1,399,133,475)
Capital Share Transactions:
Contributions for Shares issued	1,988,659,596	2,989,014,129	1,853,104,516
Distributions for Shares redeemed	(4,970,554,906)	(5,018,182,038)	(3,649,216,540)
Net increase (decrease) in net assets from capital share transactions	(2,981,895,310)	(2,029,167,909)	(1,796,112,024)
Increase (decrease) in net assets	270,018,850	(2,568,131,503)	(3,195,245,499)
Net Assets, End of Year	$ 26,424,910,984	$ 26,154,892,134	$ 28,723,023,637
Shares issued and redeemed
Shares issued (in shares)	53,400,000	83,500,000	53,075,000	[1]
Shares redeemed (in shares)	(137,050,000)	(152,550,000)	(108,550,000)	[1]
Net decrease in Shares issued and outstanding (in shares)	(83,650,000)	(69,050,000)	(55,475,000)

[1] Share transactions reflect a one-for-two reverse stock split effective at market open on May 24, 2021.