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	1,144,882,483		$ 1,144,882,483
Purchases of Shares - Shares			65,800,000
Redemption of Shares - Value	(463,375,985)		$ (463,375,985)
Redemption of Shares - Shares			(26,100,000)
Net Increase (Decrease) due to Share Transactions, value	681,506,498		$ 681,506,498
Net Increase (Decrease) due to Share Transactions, shares			39,700,000
Net Income (Loss)
Net Investment Income (Loss)	(8,011,702)	$ (3)	$ (8,011,699)
Net Realized Gain (Loss) on United States Treasury Obligations, Affiliated Investments and Commodity Futures Contracts	277,831,952	102	277,831,850
Net Change in Unrealized Gain (Loss) on United States Treasury Obligations, Affiliated Investments and Commodity Futures Contracts	230,846,860	84	230,846,776
Net Income (Loss)	500,667,110	183	500,666,927
Net Change in Shareholders' Equity, value	1,182,173,608	183	$ 1,182,173,425
Net Change in Shareholders' Equity, shares			39,700,000
Balance - Value at Jun. 30, 2021	2,523,498,245	$ 769	$ 2,523,497,476
Balance - Shares at Jun. 30, 2021		40	131,200,000
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
Purchases of Shares - Value	634,216,969		$ 634,216,969
Purchases of Shares - Shares			34,600,000
Redemption of Shares - Value	(332,102,105)		$ (332,102,105)
Redemption of Shares - Shares			(17,900,000)
Net Increase (Decrease) due to Share Transactions, value	302,114,864		$ 302,114,864
Net Increase (Decrease) due to Share Transactions, shares			16,700,000
Net Income (Loss)
Net Investment Income (Loss)	(4,841,772)	$ (2)	$ (4,841,770)
Net Realized Gain (Loss) on United States Treasury Obligations, Affiliated Investments and Commodity Futures Contracts	209,625,053	73	209,624,980
Net Change in Unrealized Gain (Loss) on United States Treasury Obligations, Affiliated Investments and Commodity Futures Contracts	120,753,803	36	120,753,767
Net Income (Loss)	325,537,084	107	325,536,977
Net Change in Shareholders' Equity, value	627,651,948	107	$ 627,651,841
Net Change in Shareholders' Equity, shares			16,700,000
Balance - Value at Jun. 30, 2021	2,523,498,245	$ 769	$ 2,523,497,476
Balance - Shares at Jun. 30, 2021		40	131,200,000
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	1,803,880,778		$ 1,803,880,778
Purchases of Shares - Shares			71,600,000
Redemption of Shares - Value	(1,079,370,826)		$ (1,079,370,826)
Redemption of Shares - Shares			(41,000,000)
Net Increase (Decrease) due to Share Transactions, value	724,509,952		$ 724,509,952
Net Increase (Decrease) due to Share Transactions, shares			30,600,000
Net Income (Loss)
Net Investment Income (Loss)	(7,624,703)	$ (2)	$ (7,624,701)
Net Realized Gain (Loss) on United States Treasury Obligations, Affiliated Investments and Commodity Futures Contracts	1,001,799,751	282	1,001,799,469
Net Change in Unrealized Gain (Loss) on United States Treasury Obligations, Affiliated Investments and Commodity Futures Contracts	(156,976,102)	(44)	(156,976,058)
Net Income (Loss)	837,198,946	236	837,198,710
Net Change in Shareholders' Equity, value	1,561,708,898	236	$ 1,561,708,662
Net Change in Shareholders' Equity, shares			30,600,000
Balance - Value at Jun. 30, 2022	4,191,254,013	$ 1,065	$ 4,191,252,948
Balance - Shares at Jun. 30, 2022		40	157,500,000
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
Purchases of Shares - Value	699,882,175		$ 699,882,175
Purchases of Shares - Shares			24,600,000
Redemption of Shares - Value	(683,537,924)		$ (683,537,924)
Redemption of Shares - Shares			(24,500,000)
Net Increase (Decrease) due to Share Transactions, value	16,344,251		$ 16,344,251
Net Increase (Decrease) due to Share Transactions, shares			100,000
Net Income (Loss)
Net Investment Income (Loss)	(1,220,704)	$ 0	$ (1,220,704)
Net Realized Gain (Loss) on United States Treasury Obligations, Affiliated Investments and Commodity Futures Contracts	880,614,272	248	880,614,024
Net Change in Unrealized Gain (Loss) on United States Treasury Obligations, Affiliated Investments and Commodity Futures Contracts	(806,366,299)	(225)	(806,366,074)
Net Income (Loss)	73,027,269	23	73,027,246
Net Change in Shareholders' Equity, value	89,371,520	23	$ 89,371,497
Net Change in Shareholders' Equity, shares			100,000
Balance - Value at Jun. 30, 2022	$ 4,191,254,013	$ 1,065	$ 4,191,252,948
Balance - Shares at Jun. 30, 2022		40	157,500,000