Schedule of Investments (Parenthetical) - USD ($)	12 Months Ended
Dec. 31, 2019	Dec. 31, 2020
Collateral Amount On Open Commodity Futures Contracts	$ 83,410,316	$ 97,539,600
United States Treasury Obligations [Member] \| Cash Equivalents [Member] \| U.S. Treasury Bills, 2.05%, 1/02/2020 [Member]
Interest rate	2.05%
Expiration date	1/02/2020
United States Treasury Obligations [Member] \| Cash Equivalents [Member] \| U.S. Treasury Bills, 2.03%, 1/09/2020 [Member]
Interest rate	2.03%
Expiration date	1/09/2020
United States Treasury Obligations [Member] \| Cash Equivalents [Member] \| U.S. Treasury Bills, 2.01%, 1/16/2020 [Member]
Interest rate	2.01%
Expiration date	1/16/2020
United States Treasury Obligations [Member] \| Cash Equivalents [Member] \| U.S. Treasury Bills, 2.04%, 1/23/2020 [Member]
Interest rate	2.04%
Expiration date	1/23/2020
United States Treasury Obligations [Member] \| Cash Equivalents [Member] \| U.S. Treasury Bills, 2.02%, 1/30/2020 [Member]
Interest rate	2.02%
Expiration date	1/30/2020
United States Treasury Obligations [Member] \| Cash Equivalents [Member] \| U.S. Treasury Bills, 1.90%, 2/06/2020 [Member]
Interest rate	1.90%
Expiration date	2/06/2020
United States Treasury Obligations [Member] \| Cash Equivalents [Member] \| U.S. Treasury Bills, 1.87%, 2/13/2020 [Member]
Interest rate	1.87%
Expiration date	2/13/2020
United States Treasury Obligations [Member] \| Cash Equivalents [Member] \| U.S. Treasury Bills, 1.85%, 2/20/2020 [Member]
Interest rate	1.85%
Expiration date	2/20/2020
United States Treasury Obligations [Member] \| Cash Equivalents [Member] \| U.S. Treasury Bills, 1.85%, 2/27/2020 [Member]
Interest rate	1.85%
Expiration date	2/27/2020
United States Treasury Obligations [Member] \| Cash Equivalents [Member] \| U.S. Treasury Bills, 1.83%, 3/05/2020 [Member]
Interest rate	1.83%
Expiration date	3/05/2020
United States Treasury Obligations [Member] \| Cash Equivalents [Member] \| U.S. Treasury Bills, 1.84%, 3/19/2020 [Member]
Interest rate	1.84%
Expiration date	3/19/2020
United States Treasury Obligations [Member] \| Cash Equivalents [Member] \| U.S. Treasury Bills, 1.88%, 3/26/2020 [Member]
Interest rate	1.88%
Expiration date	3/26/2020
United States Treasury Obligations [Member] \| Cash Equivalents [Member] \| U.S. Treasury Bills, 1.70%, 4/02/2020 [Member]
Interest rate	1.70%
Expiration date	4/02/2020
United States Treasury Obligations [Member] \| Cash Equivalents [Member] \| U.S. Treasury Bills, 1.64%, 4/09/2020 [Member]
Interest rate	1.64%
Expiration date	4/09/2020
United States Treasury Obligations [Member] \| Cash Equivalents [Member] \| U.S. Treasury Bills, 1.60%, 4/16/2020 [Member]
Interest rate	1.60%
Expiration date	4/16/2020
United States Treasury Obligations [Member] \| Cash Equivalents [Member] \| U.S. Treasury Bills, 1.60%, 4/23/2020 [Member]
Interest rate	1.60%
Expiration date	4/23/2020
United States Treasury Obligations [Member] \| Cash Equivalents [Member] \| U.S. Treasury Bills, 1.59%, 4/30/2020 [Member]
Interest rate	1.59%
Expiration date	4/30/2020
United States Treasury Obligations [Member] \| Cash Equivalents [Member] \| U.S. Treasury Bills, 1.54%, 5/07/2020 [Member]
Interest rate	1.54%
Expiration date	5/07/2020
United States Treasury Obligations [Member] \| Cash Equivalents [Member] \| U.S. Treasury Bills, 1.55%, 5/14/2020 [Member]
Interest rate	1.55%
Expiration date	5/14/2020
United States Treasury Obligations [Member] \| Cash Equivalents [Member] \| U.S. Treasury Bills, 1.55%, 5/21/2020 [Member]
Interest rate	1.55%
Expiration date	5/21/2020
United States Treasury Obligations [Member] \| Cash Equivalents [Member] \| U.S. Treasury Bills, 1.58%, 5/28/2020 [Member]
Interest rate	1.58%
Expiration date	5/28/2020
United States Treasury Obligations [Member] \| Cash Equivalents [Member] \| U.S. Treasury Bills, 1.53%, 6/04/2020 [Member]
Interest rate	1.53%
Expiration date	6/04/2020
United States Treasury Obligations [Member] \| Cash Equivalents [Member] \| U.S. Treasury Bills, 1.53%, 6/11/2020 [Member]
Interest rate	1.53%
Expiration date	6/11/2020
United States Treasury Obligations [Member] \| Cash Equivalents [Member] \| U.S. Treasury Bills 1.54%, 6/18/2020 [Member]
Interest rate	1.54%
Expiration date	6/18/2020
United States Treasury Obligations [Member] \| Cash Equivalents [Member] \| U.S. Treasury Bills 1.57%, 6/25/2020 [Member]
Interest rate	1.57%
Expiration date	6/25/2020
Money Market Funds [Member] \| Cash Equivalents [Member] \| Fidelity Investments Money Market Funds Government Portfolio [Member]
Interest rate		0.01%
Money Market Funds [Member] \| Cash Equivalents [Member] \| RBC U.S. Government Money Market Fund - Institutional Share Class [Member]
Interest rate		0.02%