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FAIR VALUE OF FINANCIAL INSTRUMENTS - Valuation of Securities Using Fair Value Hierarchy (Details) - USD ($)
Jun. 30, 2022
Dec. 31, 2021
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