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ORGANIZATION AND BUSINESS (Details)
 3 Months Ended
Apr. 28, 2020
$ / shares
shares
Apr. 10, 2006
USD ($)
$ / shares
shares
Mar. 31, 2023
contract
$ / shares
$ / item
shares
Dec. 31, 2022
$ / shares
Mar. 31, 2022
$ / shares
Dec. 31, 2021
$ / shares
Apr. 29, 2020
$ / shares
shares
Apr. 30, 2006
shares
ORGANIZATION AND BUSINESS                
Number of successive valuation days     30 days          
Average daily percentage change in the price of the benchmark futures Contract considered     10.00%          
Fee paid for each order placed to create one or more creation baskets | $ / item     1,000          
Conversion ratio 0.125              
Net asset value per unit | $ / shares   $ 67.39 $ 66.47 $ 70.05 $ 73.83 $ 54.18    
Limited partners' capital account, number of 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 AND BUSINESS                
Number of units in the basket     100,000          
Redemption Baskets                
ORGANIZATION AND BUSINESS                
Number of units in the basket     100,000          
USO                
ORGANIZATION AND BUSINESS                
Futures oil contracts held for light and sweet crude oil traded | contract     17,998          
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