Statement of Changes in Shareholders' Equity (Unaudited) - USD ($)	Total	General Shares [Member]	Shares [Member]
Balance - Value at Dec. 31, 2020	$ 58,642,248	$ 434	$ 58,641,814
Balance - Shares at Dec. 31, 2020		40	5,400,000
Purchases of Shares - Value	17,319,130		$ 17,319,130
Purchases of Shares - Shares			1,400,000
Redemption of Shares - Value	(3,940,028)		$ (3,940,028)
Redemption of Shares - Shares			(300,000)
Net Increase (Decrease) due to Share Transactions, value	13,379,102		$ 13,379,102
Net Increase (Decrease) due to Share Transactions, shares			1,100,000
Net Income (Loss)
Net Investment Income (Loss)	(122,621)	$ (1)	$ (122,620)
Net Realized Gain (Loss) on United States Treasury Obligations, Affiliated Investments and Commodity Futures Contracts	6,480,874	45	6,480,829
Net Change in Unrealized Gain (Loss) on United States Treasury Obligations, Affiliated Investments and Commodity Futures Contracts	6,380,979	44	6,380,935
Net Income (Loss)	12,739,232	88	12,739,144
Net Change in Shareholders' Equity, value	26,118,334	88	$ 26,118,246
Net Change in Shareholders' Equity, shares			1,100,000
Balance - Value at Mar. 31, 2021	84,760,582	$ 522	$ 84,760,060
Balance - Shares at Mar. 31, 2021		40	6,500,000
Balance - Value at Dec. 31, 2021	107,536,759	$ 683	$ 107,536,076
Balance - Shares at Dec. 31, 2021		40	6,300,000
Purchases of Shares - Value	73,003,292		$ 73,003,292
Purchases of Shares - Shares			3,400,000
Net Increase (Decrease) due to Share Transactions, value	73,003,292		$ 73,003,292
Net Increase (Decrease) due to Share Transactions, shares			3,400,000
Net Income (Loss)
Net Investment Income (Loss)	(243,818)	$ (1)	$ (243,817)
Net Realized Gain (Loss) on United States Treasury Obligations, Affiliated Investments and Commodity Futures Contracts	3,060,075	17	3,060,058
Net Change in Unrealized Gain (Loss) on United States Treasury Obligations, Affiliated Investments and Commodity Futures Contracts	40,470,156	224	40,469,932
Net Income (Loss)	43,286,413	240	43,286,173
Net Change in Shareholders' Equity, value	116,289,705	240	$ 116,289,465
Net Change in Shareholders' Equity, shares			3,400,000
Balance - Value at Mar. 31, 2022	$ 223,826,464	$ 923	$ 223,825,541
Balance - Shares at Mar. 31, 2022		40	9,700,000