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CONTRACTS AND AGREEMENTS - Brokerage Commissions (Details) - USD ($) | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2022 | Jun. 30, 2021 | Jun. 30, 2022 | Jun. 30, 2021
Long Duration Contracts Assumptions By Product And Guarantee [Line Items] |  |  |  |
Brokerage commissions | $ 3,889 | $ 7,974 | $ 8,405 | $ 15,806
Brokerage commissions as a percentage of average daily net assets | 0.01% | 0.02% | 0.01% | 0.02%
Rebalancing Investments Transaction [Member] |  |  |  |
Long Duration Contracts Assumptions By Product And Guarantee [Line Items] |  |  |  |
Brokerage commissions |  |  | $ 6,283 | $ 10,913
Brokerage commissions as a percentage of average daily net assets | 74.75% | 69.04% | 74.75% | 69.04%
Trades Necessitated By Creation And Redemption Activity [Member] |  |  |  |
Long Duration Contracts Assumptions By Product And Guarantee [Line Items] |  |  |  |
Brokerage commissions |  |  | $ 2,122 | $ 4,893
Brokerage commissions as a percentage of average daily net assets | 25.25% | 30.96% | 25.25% | 30.96%

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