Statements of Changes in Shareholders' Equity (Unaudited) - USD ($)	Total	General Shares [Member]	Shares [Member]
Balance - Value at Dec. 31, 2023	$ 244,341,492	$ 558	$ 244,340,934
Balance - Shares at Dec. 31, 2023		40	17,500,000
Purchases of Shares - Value	29,379,045		$ 29,379,045
Purchases of Shares - Shares			2,000,000
Redemption of Shares - Value	(69,785,454)		$ (69,785,454)
Redemption of Shares - Shares			(4,700,000)
Net Increase (Decrease) due to Share Transactions, value	(40,406,409)		$ (40,406,409)
Net Increase (Decrease) due to Share Transactions, shares			(2,700,000)
Net Income (Loss)
Net Investment Income (Loss)	5,599,643	$ 14	$ 5,599,629
Net Realized Gain (Loss) on United States Treasury Obligations, Affiliated Investments and Commodity Futures Contracts	1,730,911	4	1,730,907
Net Change in Unrealized Gain (Loss) on United States Treasury Obligations, Affiliated Investments and Commodity Futures Contracts	23,516,602	58	23,516,544
Net Income (Loss)	30,847,156	76	30,847,080
Net Change in Shareholders' Equity, value	(9,559,253)	76	$ (9,559,329)
Net Change in Shareholders' Equity, shares			(2,700,000)
Balance - Value at Jun. 30, 2024	234,782,239	$ 634	$ 234,781,605
Balance - Shares at Jun. 30, 2024		40	14,800,000
Balance - Value at Mar. 31, 2024	251,567,223	$ 623	$ 251,566,600
Balance - Shares at Mar. 31, 2024		40	16,150,000
Purchases of Shares - Value	9,392,393		$ 9,392,393
Purchases of Shares - Shares			600,000
Redemption of Shares - Value	(30,201,107)		$ (30,201,107)
Redemption of Shares - Shares			(1,950,000)
Net Increase (Decrease) due to Share Transactions, value	(20,808,714)		$ (20,808,714)
Net Increase (Decrease) due to Share Transactions, shares			(1,350,000)
Net Income (Loss)
Net Investment Income (Loss)	2,751,283	$ 7	$ 2,751,276
Net Realized Gain (Loss) on United States Treasury Obligations, Affiliated Investments and Commodity Futures Contracts	1,847,279	4	1,847,275
Net Change in Unrealized Gain (Loss) on United States Treasury Obligations, Affiliated Investments and Commodity Futures Contracts	(574,832)		(574,832)
Net Income (Loss)	4,023,730	11	4,023,719
Net Change in Shareholders' Equity, value	(16,784,984)	11	$ (16,784,995)
Net Change in Shareholders' Equity, shares			(1,350,000)
Balance - Value at Jun. 30, 2024	234,782,239	$ 634	$ 234,781,605
Balance - Shares at Jun. 30, 2024		40	14,800,000
Balance - Value at Dec. 31, 2024	212,125,752	$ 571	$ 212,125,181
Balance - Shares at Dec. 31, 2024		40	14,850,000
Purchases of Shares - Value	83,159,395		$ 83,159,395
Purchases of Shares - Shares			6,250,000
Redemption of Shares - Value	(55,958,900)		$ (55,958,900)
Redemption of Shares - Shares			(3,850,000)
Net Increase (Decrease) due to Share Transactions, value	27,200,495		$ 27,200,495
Net Increase (Decrease) due to Share Transactions, shares			2,400,000
Net Income (Loss)
Net Investment Income (Loss)	3,297,560	$ 12	$ 3,297,548
Net Realized Gain (Loss) on United States Treasury Obligations, Affiliated Investments and Commodity Futures Contracts	433,121	2	433,119
Net Change in Unrealized Gain (Loss) on United States Treasury Obligations, Affiliated Investments and Commodity Futures Contracts	(14,828,704)	(56)	(14,828,648)
Net Income (Loss)	(11,098,023)	(42)	(11,097,981)
Net Change in Shareholders' Equity, value	16,102,472	(42)	$ 16,102,514
Net Change in Shareholders' Equity, shares			2,400,000
Balance - Value at Jun. 30, 2025	228,228,224	$ 529	$ 228,227,695
Balance - Shares at Jun. 30, 2025		40	17,250,000
Balance - Value at Mar. 31, 2025	202,308,029	$ 574	$ 202,307,455
Balance - Shares at Mar. 31, 2025		40	14,100,000
Purchases of Shares - Value	65,738,078		$ 65,738,078
Purchases of Shares - Shares			5,000,000
Redemption of Shares - Value	(26,027,229)		$ (26,027,229)
Redemption of Shares - Shares			(1,850,000)
Net Increase (Decrease) due to Share Transactions, value	39,710,849		$ 39,710,849
Net Increase (Decrease) due to Share Transactions, shares			3,150,000
Net Income (Loss)
Net Investment Income (Loss)	1,596,726	$ 10	$ 1,596,716
Net Realized Gain (Loss) on United States Treasury Obligations, Affiliated Investments and Commodity Futures Contracts	400,416	2	400,414
Net Change in Unrealized Gain (Loss) on United States Treasury Obligations, Affiliated Investments and Commodity Futures Contracts	(15,787,796)	(57)	(15,787,739)
Net Income (Loss)	(13,790,654)	(45)	(13,790,609)
Net Change in Shareholders' Equity, value	25,920,195	(45)	$ 25,920,240
Net Change in Shareholders' Equity, shares			3,150,000
Balance - Value at Jun. 30, 2025	$ 228,228,224	$ 529	$ 228,227,695
Balance - Shares at Jun. 30, 2025		40	17,250,000