Derivative Instruments - Effect of Derivative Instruments on Statements of Income and Expenses (Detail) - USD ($)	3 Months Ended
Mar. 31, 2023	Mar. 31, 2022
Derivative Instruments Gain Loss [Line Items]
Futures contracts, realized gain (loss)	$ (70,299,896)	$ 121,185,479
Futures contracts, unrealized gain (loss)	(47,643,559)	649,699,524
Commodity Futures Contract [Member] \| Not Designated as Hedging Instrument [Member]
Derivative Instruments Gain Loss [Line Items]
Futures contracts, realized gain (loss)	(70,299,896)	121,185,479
Futures contracts, unrealized gain (loss)	(47,643,559)	(649,699,524)
Net Realized and Net Change in Unrealized Gain (Loss)	$ (117,943,455)	$ 770,885,003

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

No definition available.

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Amount of realized and unrealized gain (loss) on investment.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 320
-SubTopic 10
-Section 50
-Paragraph 10
-Subparagraph (c)
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-Publisher FASB
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-Section S99
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-Subparagraph (SX 210.5-03.7(c),9(a))
-URI https://asc.fasb.org/extlink&oid=126953954&loc=SL114868664-224227

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-Publisher FASB
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-Topic 230
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-Section 45
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-URI https://asc.fasb.org/extlink&oid=126954810&loc=d3e3602-108585

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The difference between the book value and the sale price of agreements to purchase or sell mineral resources, energy, and agricultural products at some future point. This element refers to the gain (loss) included in earnings and not to the cash proceeds.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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-Topic 230
-SubTopic 10
-Section 45
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The net change in the difference between the fair value and the carrying value, or in the comparative fair values, of open agreements to purchase or sell mineral resources, energy, and agricultural products at some future point held at each balance sheet date, that was included in earnings for the period.

+ References

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