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FAIR VALUE OF FINANCIAL INSTRUMENTS - Valuation of Securities Using Fair Value Hierarchy (Details) - USD ($) | Jun. 30, 2022 | Dec. 31, 2021
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Short-Term Investments |  |
Schedule Of Trading Securities And Other Trading Assets |  |
Securities fair value | $ 1,434,600,000 | $ 1,544,534,000
Exchange-Traded Futures Contracts | Swap | OTC |  |
Schedule Of Trading Securities And Other Trading Assets |  |
Securities fair value | (2,396) |
United States Contracts | Exchange-Traded Futures Contracts |  |
Schedule Of Trading Securities And Other Trading Assets |  |
Securities fair value | 44,958,530 | 114,437,224
Level 1 | Short-Term Investments |  |
Schedule Of Trading Securities And Other Trading Assets |  |
Securities fair value | 1,434,600,000 | 1,544,534,000
Level 1 | Exchange-Traded Futures Contracts | Swap | OTC |  |
Schedule Of Trading Securities And Other Trading Assets |  |
Securities fair value | 0 |
Level 1 | United States Contracts | Exchange-Traded Futures Contracts |  |
Schedule Of Trading Securities And Other Trading Assets |  |
Securities fair value | 44,958,530 | 114,437,224
Level 2 | Short-Term Investments |  |
Schedule Of Trading Securities And Other Trading Assets |  |
Securities fair value | 0 | 0
Level 2 | Exchange-Traded Futures Contracts | Swap | OTC |  |
Schedule Of Trading Securities And Other Trading Assets |  |
Securities fair value | (2,396) |
Level 2 | United States Contracts | Exchange-Traded Futures Contracts |  |
Schedule Of Trading Securities And Other Trading Assets |  |
Securities fair value | 0 | 0
Level 3 | Short-Term Investments |  |
Schedule Of Trading Securities And Other Trading Assets |  |
Securities fair value | 0 | 0
Level 3 | Exchange-Traded Futures Contracts | Swap | OTC |  |
Schedule Of Trading Securities And Other Trading Assets |  |
Securities fair value | 0 |
Level 3 | United States Contracts | Exchange-Traded Futures Contracts |  |
Schedule Of Trading Securities And Other Trading Assets |  |
Securities fair value | $ 0 | $ 0

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- Definition Fair value portion of investment securities, including, but not limited to, marketable securities, derivative financial instruments, and investments accounted for under the equity method. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (a) -URI https://asc.fasb.org/extlink&oid=126976982&loc=d3e19207-110258 + Details
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