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CONTRACTS AND AGREEMENTS (Tables) | 12 Months Ended
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Dec. 31, 2017
Contractors [Abstract] |
Brokerage Commission | USO also incurs commissions to brokers for the purchase and sale of Oil Futures Contracts, Other Oil-Related Investments or short-term obligations of the United States of two years or less (“Treasuries”).
|  | For the Year Ended December 31, 2017 |  |  | For the Year Ended December 31, 2016 |  |  | For the Year Ended December 31, 2015 |
Total commissions accrued to brokers |  | $ | 4,675,687 |  |  | $ | 6,875,314 |  |  | $ | 5,196,820 |
Total commissions as annualized percentage of average total net assets |  |  | 0.18 | % |  |  | 0.20 | % |  |  | 0.20 | %
Commissions accrued as a result of rebalancing |  | $ | 4,112,340 |  |  | $ | 6,297,055 |  |  | $ | 4,288,005 |
Percentage of commissions accrued as a result of rebalancing |  |  | 87.95 | % |  |  | 91.59 | % |  |  | 82.51 | %
Commissions accrued as a result of creation and redemption activity |  | $ | 563,347 |  |  | $ | 578,259 |  |  | $ | 908,815 |
Percentage of commissions accrued as a result of creation and redemption activity |  |  | 12.05 | % |  |  | 8.41 | % |  |  | 17.49 | %

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- Definition Tabular disclosure of fees earned by the broker commission. + References No definition available. + Details
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