Statement of Changes in Shareholders' Equity (Unaudited) - USD ($)	Total	General Shares [Member]	Shares [Member]
Balance - Value at Dec. 31, 2021	$ 487,186,183	$ 886	$ 487,185,297
Balance - Shares at Dec. 31, 2021		40	22,000,000
Purchases of Shares - Value	168,934,827		$ 168,934,827
Purchases of Shares - Shares			6,900,000
Redemption of Shares - Value	(68,777,680)		$ (68,777,680)
Redemption of Shares - Shares			(2,800,000)
Net Increase (Decrease) due to Share Transactions, value	100,157,147		$ 100,157,147
Net Increase (Decrease) due to Share Transactions, shares			4,100,000
Net Income (Loss)
Net Investment Income (Loss)	(941,766)	$ (2)	$ (941,764)
Net Realized Gain (Loss) on United States Treasury Obligations, Affiliated Investments and Commodity Futures Contracts	14,762,630	25	14,762,605
Net Change in Unrealized Gain (Loss) on United States Treasury Obligations, Affiliated Investments and Commodity Futures Contracts	75,954,511	129	75,954,382
Net Income (Loss)	89,775,375	152	89,775,223
Net Change in Shareholders' Equity, value	189,932,522	152	$ 189,932,370
Net Change in Shareholders' Equity, shares			4,100,000
Balance - Value at Mar. 31, 2022	677,118,705	$ 1,038	$ 677,117,667
Balance - Shares at Mar. 31, 2022		40	26,100,000
Balance - Value at Dec. 31, 2022	224,275,410	$ 780	$ 224,274,630
Balance - Shares at Dec. 31, 2022		40	11,500,000
Purchases of Shares - Value	53,346,605		$ 53,346,605
Purchases of Shares - Shares			2,600,000
Redemption of Shares - Value	(59,103,632)		$ (59,103,632)
Redemption of Shares - Shares			(3,000,000)
Net Increase (Decrease) due to Share Transactions, value	(5,757,027)		$ (5,757,027)
Net Increase (Decrease) due to Share Transactions, shares			(400,000)
Net Income (Loss)
Net Investment Income (Loss)	3,205,715	$ 15	$ 3,205,700
Net Realized Gain (Loss) on United States Treasury Obligations, Affiliated Investments and Commodity Futures Contracts	(12,063,792)	(58)	(12,063,734)
Net Change in Unrealized Gain (Loss) on United States Treasury Obligations, Affiliated Investments and Commodity Futures Contracts	14,682,918	71	14,682,847
Net Income (Loss)	5,824,841	28	5,824,813
Net Change in Shareholders' Equity, value	67,814	28	$ 67,786
Net Change in Shareholders' Equity, shares			(400,000)
Balance - Value at Mar. 31, 2023	$ 224,343,224	$ 808	$ 224,342,416
Balance - Shares at Mar. 31, 2023		40	11,100,000