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ORGANIZATION AND BUSINESS (Details) - USD ($)
 1 Months Ended 9 Months Ended
Nov. 18, 2009
Nov. 30, 2009
Nov. 18, 2009
Sep. 30, 2022
Jun. 30, 2022
Dec. 31, 2021
Sep. 30, 2021
Jun. 30, 2021
Dec. 31, 2020
ORGANIZATION AND BUSINESS                  
Number of successive valuation days       30          
Average daily percentage change in the price of the Benchmark Futures Contract considered       10.00%          
Number of units per basket       50,000          
Transaction fee       $ 350          
Number of initially registered units on Form S-1 with the U.S. Securities and Exchange Commission   30,000,000              
Net asset value per share $ 50.00   $ 50.00 $ 22.02 $ 17.68 $ 11.65 $ 14.48 $ 9.98 $ 7.74
Number of units issued     200,000            
Value of unit issued     $ 10,000,000            
Commenced investment operations date Nov. 18, 2009                
Number of registered units       30,000,000          
Creation Baskets                  
ORGANIZATION AND BUSINESS                  
Number of units per basket       50,000