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Condensed Schedule of Investments (Parenthetical)	6 Months Ended
	Jun. 30, 2020 USD ($)
Collateral Amount On Open Commodity Futures Contracts	$ 86,405,619
Cash Equivalents [Member] | United States Treasury Obligations [Member] | U.S. Treasury Bills, 1.54%, 7/02/2020 [Member]
Interest rate	1.54%
Expiration date	7/02/2020
Cash Equivalents [Member] | United States Treasury Obligations [Member] | U.S. Treasury Bills, 1.51%, 7/09/2020 [Member]
Interest rate	1.52%
Expiration date	7/09/2020
Cash Equivalents [Member] | United States Treasury Obligations [Member] | U.S. Treasury Bills, 1.54%, 7/16/2020 [Member]
Interest rate	1.55%
Expiration date	7/16/2020
Cash Equivalents [Member] | United States Treasury Obligations [Member] | U.S. Treasury Bills, 1.53%, 7/23/2020 [Member]
Interest rate	1.53%
Expiration date	7/23/2020
Cash Equivalents [Member] | United States Treasury Obligations [Member] | U.S. Treasury Bills, 1.53%, 7/30/2020 [Member]
Interest rate	1.54%
Expiration date	7/30/2020
Cash Equivalents [Member] | United States Treasury Obligations [Member] | U.S. Treasury Bills, 1.53%, 8/06/2020 [Member]
Interest rate	1.54%
Expiration date	8/06/2020
Cash Equivalents [Member] | United States Treasury Obligations [Member] | U.S. Treasury Bills, 1.52%, 8/13/2020 [Member]
Interest rate	1.52%
Expiration date	8/13/2020
Cash Equivalents [Member] | United States Treasury Obligations [Member] | U.S. Treasury Bills, 1.52%, 8/20/2020 [Member]
Interest rate	1.53%
Expiration date	8/20/2020
Cash Equivalents [Member] | United States Treasury Obligations [Member] | U.S. Treasury Bills, 1.42%, 8/27/2020 [Member]
Interest rate	1.43%
Expiration date	8/27/2020
Cash Equivalents [Member] | United States Treasury Obligations [Member] | U.S. Treasury Bills, 0.67%, 9/03/2020 [Member]
Interest rate	0.68%
Expiration date	9/03/2020
Cash Equivalents [Member] | Money Market Funds [Member] | Fidelity Investments Money Market Funds Government Portfolio [Member]
Investment Interest Rate	0.06%
Cash Equivalents [Member] | Money Market Funds [Member] | Goldman Sachs Financial Square Funds - Government Fund - Class FS [Member]
Investment Interest Rate	0.15%
Cash Equivalents [Member] | Money Market Funds [Member] | RBC U.S. Government Money Market Fund - Institutional Share Class [Member]
Investment Interest Rate	0.10%

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Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
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