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Schedule of Investments (Parenthetical) - USD ($)	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2020
Collateral Amount on Open Commodity Futures Contracts	$ 803,973	$ 845,621
RBC U.S. Government Money Market Fund - Institutional Share Class, 0.02% [Member]
Interest Rate		0.02%
U.S. Treasury Bills:2.05%, 1/02/2020 [Member] | Cash Equivalents [Member] | United States Treasury Obligations [Member]
Expiration date	1/02/2020
Interest Rate	2.05%
U.S. Treasury Bills:2.03%, 1/09/2020 [Member] | Cash Equivalents [Member] | United States Treasury Obligations [Member]
Expiration date	1/09/2020
Interest Rate	2.03%
U.S. Treasury Bills:2.01%, 1/16/2020 [Member] | Cash Equivalents [Member] | United States Treasury Obligations [Member]
Expiration date	1/16/2020
Interest Rate	2.01%
U.S. Treasury Bills:2.04%, 1/23/2020 [Member] | Cash Equivalents [Member] | United States Treasury Obligations [Member]
Expiration date	1/23/2020
Interest Rate	2.04%
U.S. Treasury Bills:2.02%, 1/30/2020 [Member] | Cash Equivalents [Member] | United States Treasury Obligations [Member]
Expiration date	1/30/2020
Interest Rate	2.02%
U.S. Treasury Bills:1.90%, 2/06/2020 [Member] | Cash Equivalents [Member] | United States Treasury Obligations [Member]
Expiration date	2/06/2020
Interest Rate	1.90%
U.S. Treasury Bills:1.87%, 2/13/2020 [Member] | Cash Equivalents [Member] | United States Treasury Obligations [Member]
Expiration date	2/13/2020
Interest Rate	1.87%
U.S. Treasury Bills:1.85%, 2/20/2020 [Member] | Cash Equivalents [Member] | United States Treasury Obligations [Member]
Expiration date	2/20/2020
Interest Rate	1.85%
U.S. Treasury Bills:1.85%, 2/27/2020 [Member] | Cash Equivalents [Member] | United States Treasury Obligations [Member]
Expiration date	2/27/2020
Interest Rate	1.85%
U.S. Treasury Bills:1.83%, 3/05/2020 [Member] | Cash Equivalents [Member] | United States Treasury Obligations [Member]
Expiration date	3/05/2020
Interest Rate	1.83%
U.S. Treasury Bills:1.84%, 3/19/2020 [Member] | Cash Equivalents [Member] | United States Treasury Obligations [Member]
Expiration date	3/19/2020
Interest Rate	1.84%
U.S. Treasury Bills:1.88%, 3/26/2020 [Member] | Cash Equivalents [Member] | United States Treasury Obligations [Member]
Expiration date	3/26/2020
Interest Rate	1.88%
U.S. Treasury Bills:1.70%, 4/02/2020 [Member] | Cash Equivalents [Member] | United States Treasury Obligations [Member]
Expiration date	4/02/2020
Interest Rate	1.70%
U.S. Treasury Bills:1.64%, 4/09/2020 [Member] | Cash Equivalents [Member] | United States Treasury Obligations [Member]
Expiration date	4/09/2020
Interest Rate	1.64%
U.S. Treasury Bills:1.60%, 4/16/2020 [Member] | Cash Equivalents [Member] | United States Treasury Obligations [Member]
Expiration date	4/16/2020
Interest Rate	1.60%
U.S. Treasury Bills:1.60%, 4/23/2020 [Member] | Cash Equivalents [Member] | United States Treasury Obligations [Member]
Expiration date	4/23/2020
Interest Rate	1.60%
U.S. Treasury Bills:1.59%, 4/30/2020 [Member] | Cash Equivalents [Member] | United States Treasury Obligations [Member]
Expiration date	4/30/2020
Interest Rate	1.59%
U.S. Treasury Bills:1.54%, 5/07/2020 [Member] | Cash Equivalents [Member] | United States Treasury Obligations [Member]
Expiration date	5/07/2020
Interest Rate	1.54%
U.S. Treasury Bills:1.55%, 5/14/2020 [Member] | Cash Equivalents [Member] | United States Treasury Obligations [Member]
Expiration date	5/14/2020
Interest Rate	1.55%
U.S. Treasury Bills:1.55%, 5/21/2020 [Member] | Cash Equivalents [Member] | United States Treasury Obligations [Member]
Expiration date	5/21/2020
Interest Rate	1.55%
U.S. Treasury Bills:1.58%, 5/28/2020 [Member] | Cash Equivalents [Member] | United States Treasury Obligations [Member]
Expiration date	5/28/2020
Interest Rate	1.58%
U.S. Treasury Bills:1.53%, 6/04/2020 [Member] | Cash Equivalents [Member] | United States Treasury Obligations [Member]
Expiration date	6/04/2020
Interest Rate	1.53%
U.S. Treasury Bills:1.53%, 6/11/2020 [Member] | Cash Equivalents [Member] | United States Treasury Obligations [Member]
Expiration date	6/11/2020
Interest Rate	1.53%
U.S. Treasury Bills:1.54%, 6/18/2020 [Member] | Cash Equivalents [Member] | United States Treasury Obligations [Member]
Expiration date	6/18/2020
Interest Rate	1.54%
U.S. Treasury Bills:1.57%, 6/25/2020 [Member] | Cash Equivalents [Member] | United States Treasury Obligations [Member]
Expiration date	6/25/2020
Interest Rate	1.57%

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