Statement of Changes in Shareholders' Equity (Unaudited) - USD ($)	Total	General Shares [Member]	Shares [Member]
Balance - Value at Dec. 31, 2020	$ 1,341,324,637	$ 586	$ 1,341,324,051
Balance - Shares at Dec. 31, 2020		40	91,500,000
Purchases of Shares - Value	510,665,514		$ 510,665,514
Purchases of Shares - Shares			31,200,000
Redemption of Shares - Value	(131,273,880)		$ (131,273,880)
Redemption of Shares - Shares			(8,200,000)
Net Increase (Decrease) due to Share Transactions, value	379,391,634		$ 379,391,634
Net Increase (Decrease) due to Share Transactions, shares			23,000,000
Net Income (Loss)
Net Investment Income (Loss)	(3,169,930)	$ (1)	$ (3,169,929)
Net Realized Gain (Loss) on United States Treasury Obligations, Affiliated Investments and Commodity Futures Contracts	68,206,899	29	68,206,870
Net Change in Unrealized Gain (Loss) on United States Treasury Obligations, Affiliated Investments and Commodity Futures Contracts	110,093,057	48	110,093,009
Net Income (Loss)	175,130,026	76	175,129,950
Net Change in Shareholders' Equity, value	554,521,660	76	$ 554,521,584
Net Change in Shareholders' Equity, shares			23,000,000
Balance - Value at Mar. 31, 2021	1,895,846,297	$ 662	$ 1,895,845,635
Balance - Shares at Mar. 31, 2021		40	114,500,000
Balance - Value at Dec. 31, 2021	2,629,545,115	$ 829	$ 2,629,544,286
Balance - Shares at Dec. 31, 2021		40	126,900,000
Purchases of Shares - Value	1,103,998,603		$ 1,103,998,603
Purchases of Shares - Shares			47,000,000
Redemption of Shares - Value	(395,832,902)		$ (395,832,902)
Redemption of Shares - Shares			(16,500,000)
Net Increase (Decrease) due to Share Transactions, value	708,165,701		$ 708,165,701
Net Increase (Decrease) due to Share Transactions, shares			30,500,000
Net Income (Loss)
Net Investment Income (Loss)	(6,403,999)	$ (2)	$ (6,403,997)
Net Realized Gain (Loss) on United States Treasury Obligations, Affiliated Investments and Commodity Futures Contracts	121,185,479	34	121,185,445
Net Change in Unrealized Gain (Loss) on United States Treasury Obligations, Affiliated Investments and Commodity Futures Contracts	649,390,197	181	649,390,016
Net Income (Loss)	764,171,677	213	764,171,464
Net Change in Shareholders' Equity, value	1,472,337,378	213	$ 1,472,337,165
Net Change in Shareholders' Equity, shares			30,500,000
Balance - Value at Mar. 31, 2022	$ 4,101,882,493	$ 1,042	$ 4,101,881,451
Balance - Shares at Mar. 31, 2022		40	157,400,000