Statement of Changes in Shareholders' Equity (Unaudited) - USD ($)	Total	General Shares [Member]	Shares [Member]
Balance - Value at Dec. 31, 2020	$ 141,887,621	$ 2,102	$ 141,885,519
Balance - Shares at Dec. 31, 2020		40	2,700,000
Redemption of Shares - Value	(14,998,540)		$ (14,998,540)
Redemption of Shares - Shares			(300,000)
Net Increase (Decrease) due to Share Transactions, value	(14,998,540)		$ (14,998,540)
Net Increase (Decrease) due to Share Transactions, shares			(300,000)
Net Income (Loss)
Net Investment Income (Loss)	(206,473)	$ (3)	$ (206,470)
Net Realized Gain (Loss) on United States Treasury Obligations, Affiliated Investments and Commodity Futures Contracts	16,472,045	258	16,471,787
Net Change in Unrealized Gain (Loss) on United States Treasury Obligations, Affiliated Investments and Commodity Futures Contracts	(29,141,380)	(457)	(29,140,923)
Net Income (Loss)	(12,875,808)	(202)	(12,875,606)
Net Change in Shareholders' Equity, value	(27,874,348)	(202)	$ (27,874,146)
Net Change in Shareholders' Equity, shares			(300,000)
Balance - Value at Mar. 31, 2021	114,013,273	$ 1,900	$ 114,011,373
Balance - Shares at Mar. 31, 2021		40	2,400,000
Balance - Value at Dec. 31, 2021	112,651,902	$ 1,959	$ 112,649,943
Balance - Shares at Dec. 31, 2021		40	2,300,000
Purchases of Shares - Value	15,569,488		$ 15,569,488
Purchases of Shares - Shares			300,000
Net Increase (Decrease) due to Share Transactions, value	15,569,488		$ 15,569,488
Net Increase (Decrease) due to Share Transactions, shares			300,000
Net Income (Loss)
Net Investment Income (Loss)	(207,261)	$ (4)	$ (207,257)
Net Realized Gain (Loss) on United States Treasury Obligations, Affiliated Investments and Commodity Futures Contracts	4,594,681	80	4,594,601
Net Change in Unrealized Gain (Loss) on United States Treasury Obligations, Affiliated Investments and Commodity Futures Contracts	2,897,706	50	2,897,656
Net Income (Loss)	7,285,126	126	7,285,000
Net Change in Shareholders' Equity, value	22,854,614	126	$ 22,854,488
Net Change in Shareholders' Equity, shares			300,000
Balance - Value at Mar. 31, 2022	$ 135,506,516	$ 2,085	$ 135,504,431
Balance - Shares at Mar. 31, 2022		40	2,600,000