Statement of Changes in Shareholders' Equity - USD ($)	Total	General Shares [Member]	Shares [Member]
Balance - Value at Dec. 31, 2020	$ 173,836,791	$ 688	$ 173,836,103
Balance - Shares at Dec. 31, 2020		40	10,100,000
Purchases of Shares - Value	326,772,681		$ 326,772,681
Purchases of Shares - Shares			16,500,000
Redemption of Shares - Value	(93,993,469)		$ (93,993,469)
Redemption of Shares - Shares			(4,600,000)
Net Increase (Decrease) due to Share Transactions, value	232,779,212		$ 232,779,212
Net Increase (Decrease) due to Share Transactions, shares			11,900,000
Net Income (Loss)
Net Investment Income (Loss)	(2,689,480)	$ (6)	$ (2,689,474)
Net Realized Gain (Loss) on United States Treasury Obligations, Affiliated Investments and Commodity Futures Contracts	66,444,872	163	66,444,709
Net Change in Unrealized Gain (Loss) on United States Treasury Obligations, Affiliated Investments and Commodity Futures Contracts	16,814,788	41	16,814,747
Net Income (Loss)	80,570,180	198	80,569,982
Net Change in Shareholders' Equity, value	313,349,392	198	$ 313,349,194
Net Change in Shareholders' Equity, shares			11,900,000
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	252,963,317		$ 252,963,317
Purchases of Shares - Shares			10,700,000
Redemption of Shares - Value	(447,650,859)		$ (447,650,859)
Redemption of Shares - Shares			(21,200,000)
Net Increase (Decrease) due to Share Transactions, value	(194,687,542)		$ (194,687,542)
Net Increase (Decrease) due to Share Transactions, shares			(10,500,000)
Return of Capital Distributions	(2,222,898)	$ (7)	$ (2,222,891)
Net Income (Loss)
Net Investment Income (Loss)	2,669,021	7	2,669,014
Net Realized Gain (Loss) on United States Treasury Obligations, Affiliated Investments and Commodity Futures Contracts	20,919,190	33	20,919,157
Net Change in Unrealized Gain (Loss) on United States Treasury Obligations, Affiliated Investments and Commodity Futures Contracts	(89,588,544)	(139)	(89,588,405)
Net Income (Loss)	(66,000,333)	(99)	(66,000,234)
Net Change in Shareholders' Equity, value	(262,910,773)	(106)	$ (262,910,667)
Net Change in Shareholders' Equity, shares			(10,500,000)
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	106,662,444		$ 106,662,444
Purchases of Shares - Shares			5,400,000
Redemption of Shares - Value	(194,153,717)		$ (194,153,717)
Redemption of Shares - Shares			(10,250,000)
Net Increase (Decrease) due to Share Transactions, value	(87,491,273)		$ (87,491,273)
Net Increase (Decrease) due to Share Transactions, shares			(4,850,000)
Return of Capital Distributions	(9,171,620)	$ (53)	$ (9,171,567)
Net Income (Loss)
Net Investment Income (Loss)	9,598,305	54	9,598,251
Net Realized Gain (Loss) on United States Treasury Obligations, Affiliated Investments and Commodity Futures Contracts	(55,580,401)	(149)	(55,580,252)
Net Change in Unrealized Gain (Loss) on United States Treasury Obligations, Affiliated Investments and Commodity Futures Contracts	39,951,566	99	39,951,467
Net Income (Loss)	(6,030,530)	4	(6,030,534)
Net Change in Shareholders' Equity, value	(102,693,423)	(49)	$ (102,693,374)
Net Change in Shareholders' Equity, shares			(4,850,000)
Balance - Value at Dec. 31, 2023	$ 121,581,987	$ 731	$ 121,581,256
Balance - Shares at Dec. 31, 2023		40	6,650,000