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Schedule of Investments (Parenthetical) - USD ($) | 12 Months Ended
--- | ---
Dec. 31, 2021 | Dec. 31, 2020
Collateral Amount on Open Commodity Futures Contracts | $ 1,345,560 | $ 845,621
United States [Member] | United States Money Market Funds [Member] | RBC U.S. Government Money Market Fund - Institutional Shares 0.03% |  |
Interest Rate | 0.03% |
Cash Equivalents [Member] | United States Money Market Funds [Member] | RBC U.S. Government Money Market Fund - Institutional Shares 0.03% |  |
Expiration date | December 31, 2021 |
Cash Equivalents [Member] | United States Money Market Funds [Member] | RBC U.S. Government Money Market Fund - Institutional Share Class, 0.02% |  |
Expiration date |  | December 31, 2020
Interest Rate |  | 0.02%
Cash Equivalents [Member] | United States [Member] | Goldman Sachs Financial Square Government Fund - Institutional Shares, 0.03% |  |
Interest Rate | 0.03% |

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