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ORGANIZATION AND BUSINESS (Details)
Dec. 06, 2007
USD ($)
$ / shares
shares
Mar. 31, 2025
USD ($)
contract
$ / shares
shares
Dec. 31, 2024
$ / shares
Mar. 31, 2024
$ / shares
Dec. 31, 2023
$ / shares
Dec. 04, 2007
shares
ORGANIZATION AND BUSINESS            
Number of oil futures contracts held | contract   698        
Number of registered shares           11,000,000
Net asset value per share | $ / shares $ 50 $ 38.21 $ 38.01 $ 39.99 $ 35.23  
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 they place to create one or more creation baskets or to redeem one or more baskets | $   $ 350