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FAIR VALUE OF FINANCIAL INSTRUMENTS - Valuation of Securities Using Fair Value Hierarchy (Details) - USD ($)	Mar. 31, 2022	Dec. 31, 2021
Short-Term Investments.
Schedule of Trading Securities and Other Trading Assets
Securities, fair value	$ 2,274,000,000	$ 1,544,534,000
Exchange-Traded Futures Contracts | OTC | Swap
Schedule of Trading Securities and Other Trading Assets
Securities, fair value	(1,287)
United States Contracts | Exchange-Traded Futures Contracts
Schedule of Trading Securities and Other Trading Assets
Securities, fair value	269,339,826	114,437,224
Fair Value, Inputs, Level 1 | Short-Term Investments.
Schedule of Trading Securities and Other Trading Assets
Securities, fair value	2,274,000,000	1,544,534,000
Fair Value, Inputs, Level 1 | Exchange-Traded Futures Contracts | OTC | Swap
Schedule of Trading Securities and Other Trading Assets
Securities, fair value	0
Fair Value, Inputs, Level 1 | United States Contracts | Exchange-Traded Futures Contracts
Schedule of Trading Securities and Other Trading Assets
Securities, fair value	269,339,826	114,437,224
Fair Value, Inputs, Level 2 | Short-Term Investments.
Schedule of Trading Securities and Other Trading Assets
Securities, fair value	0	0
Fair Value, Inputs, Level 2 | Exchange-Traded Futures Contracts | OTC | Swap
Schedule of Trading Securities and Other Trading Assets
Securities, fair value	(1,287)
Fair Value, Inputs, Level 2 | United States Contracts | Exchange-Traded Futures Contracts
Schedule of Trading Securities and Other Trading Assets
Securities, fair value	0	0
Fair Value, Inputs, Level 3 | Short-Term Investments.
Schedule of Trading Securities and Other Trading Assets
Securities, fair value	0	0
Fair Value, Inputs, Level 3 | Exchange-Traded Futures Contracts | OTC | Swap
Schedule of Trading Securities and Other Trading Assets
Securities, fair value	0
Fair Value, Inputs, 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 http://asc.fasb.org/extlink&oid=123874694&loc=d3e19207-110258

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