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ORGANIZATION AND BUSINESS (Details) | 1 Months Ended | 6 Months Ended |  |  |  |  |  |
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Apr. 10, 2006 USD ($) $ / shares shares | Jun. 30, 2020 $ / shares $ / item shares | Apr. 28, 2020 $ / shares shares | Mar. 31, 2020 $ / shares | Dec. 31, 2019 $ / shares | [1] | Jun. 30, 2019 $ / shares | [2] | Mar. 31, 2019 $ / shares | [2] | Dec. 31, 2018 $ / shares
Organization, Consolidation and Presentation of Financial Statements Disclosure |  |  |  |  |  |  |  |
Shares of USO issued |  | 185,362,500 | 1,482,900,000 |  |  |  |  |
Shares of USO outstanding |  | 185,362,500 | 1,482,900,000 |  |  |  |  |
Per share NAV | $ / shares |  | $ 16.35 | $ 2.04 |  |  |  |  |
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 | 17,000,000 | 5,627,000,000 |  |  |  |  |  |
Net asset value per unit | $ / shares | $ 67.39 | $ 28.02 |  | $ 33.94 | $ 102.27 | $ 97.06 | $ 100.00 | $ 76.68
Limited Partners' Capital Account, Units Issued | 200,000 |  |  |  |  |  |  |
Value of units issued | $ | $ 13,479,000 |  |  |  |  |  |  |
Number of successive valuation days |  | 30 days |  |  |  |  |  |
Average daily percentage change in the price of the Benchmark Futures Contract considered |  | 10.00% |  |  |  |  |  |
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 |  |  |  |  |  |
Open Futures Contracts- Long | United States Contracts | NYMEX WTI Crude Oil Futures CL May 2020 contracts, expiring April 2020 |  |  |  |  |  |  |  |
Organization, Consolidation and Presentation of Financial Statements Disclosure |  |  |  |  |  |  |  |
Number of Contracts |  | 117,998 |  |  |  |  |  |
[1] | On April 28, 2020, there was a 1-for-8 reverse share split. The Condensed Statement of Financial Conditions have been adjusted for the periods shown to reflect the 1-for-8 reverse share split on retroactive basis.
[2] | On April 28, 2020, there was a 1-for-8 reverse share split. The Financial Highlights have been adjusted for the period shown to reflect the 1-for-8 reverse share split on retroactive basis.

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