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ORGANIZATION AND BUSINESS (Details)
 3 Months Ended
Apr. 28, 2020
$ / shares
shares
Apr. 10, 2006
USD ($)
$ / shares
shares
Mar. 31, 2022
contract
$ / shares
$ / item
shares
Dec. 31, 2021
$ / shares
Mar. 31, 2021
$ / shares
Dec. 31, 2020
$ / shares
Apr. 30, 2006
shares
Organization, Consolidation and Presentation of Financial Statements Disclosure              
Number of successive valuation days     30 days        
Average daily percentage change in the price of the Benchmark Futures Contract considered     10.00%        
Fee paid by Authorized Purchasers for each order placed to create one or more Creation Baskets or to redeem one or more baskets | $ / item     1,000        
Limited Partners' Capital Account, Units Authorized     5,627,000,000       17,000,000
Conversion ratio 0.125            
Net asset value per unit | $ / shares   $ 67.39 $ 73.83 $ 54.18 $ 40.40 $ 33.07  
Limited partners capital account units issued   200,000          
Value of units issued | $   $ 13,479,000          
Creation Baskets              
Organization, Consolidation and Presentation of Financial Statements Disclosure              
Number of units per basket     100,000        
Redemption Baskets              
Organization, Consolidation and Presentation of Financial Statements Disclosure              
Number of units per basket     100,000        
USO              
Organization, Consolidation and Presentation of Financial Statements Disclosure              
Number of shares issued 1,482,900,000   185,362,500        
Number of shares outstanding 1,482,900,000   185,362,500        
Net asset value per unit | $ / shares $ 2.04   $ 16.35        
Futures Oil Contracts held for light and sweet crude oil traded | contract     31,661