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ORGANIZATION AND BUSINESS (Details)
 6 Months Ended
Apr. 28, 2020
$ / shares
shares
Apr. 10, 2006
USD ($)
$ / shares
shares
Jun. 30, 2022
contract
$ / shares
$ / item
shares
Mar. 31, 2022
$ / shares
Dec. 31, 2021
$ / shares
Jun. 30, 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            
Conversion ratio 0.125                
Net asset value per unit | $ / shares   $ 67.39 $ 80.21 $ 73.83 $ 54.18 $ 49.87 $ 40.40 $ 33.07  
Limited Partners' Capital Account, Units Authorized     5,627,000,000           17,000,000
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                  
Futures Oil Contracts held for light and sweet crude oil traded | contract     23,333            
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