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ORGANIZATION AND BUSINESS (Details)
Dec. 06, 2007
USD ($)
$ / shares
shares
Jun. 30, 2023
USD ($)
contract
$ / shares
shares
Mar. 31, 2023
$ / shares
Dec. 31, 2022
$ / shares
Jun. 30, 2022
$ / shares
Mar. 31, 2022
$ / shares
Dec. 31, 2021
$ / shares
Dec. 04, 2007
shares
ORGANIZATION AND BUSINESS                
Number of oil futures contracts held | contract   1,052            
Number of registered shares   311,000,000           11,000,000
Net asset value per share | $ / shares $ 50.00 $ 32.70 $ 33.77 $ 35.45 $ 39.48 $ 36.99 $ 27.81  
Number of shares issued 300,000              
Value of shares issued | $ $ 15,000,000              
Creation Baskets                
ORGANIZATION AND BUSINESS                
Number of shares per basket   50,000            
Fee paid by authorized purchasers for each order placed to create one or more creation baskets or to redeem one or more baskets | $   $ 350