XML 37 R21.htm IDEA: XBRL DOCUMENT
v3.10.0.1

CONTRACTS AND AGREEMENTS (Tables) | 12 Months Ended
--- | ---
Dec. 31, 2018
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, 2018 |  |  | For the Year Ended December 31, 2017 |  |  | For the Year Ended December 31, 2016 |
Total commissions accrued to brokers |  | $ | 2,538,611 |  |  | $ | 4,675,687 |  |  | $ | 6,875,314 |
Total commissions as annualized percentage of average total net assets |  |  | 0.14 | % |  |  | 0.18 | % |  |  | 0.20 | %
Commissions accrued as a result of rebalancing |  | $ | 2,145,268 |  |  | $ | 4,112,340 |  |  | $ | 6,297,055 |
Percentage of commissions accrued as a result of rebalancing |  |  | 84.51 | % |  |  | 87.95 | % |  |  | 91.59 | %
Commissions accrued as a result of creation and redemption activity |  | $ | 393,343 |  |  | $ | 563,347 |  |  | $ | 578,259 |
Percentage of commissions accrued as a result of creation and redemption activity |  |  | 15.49 | % |  |  | 12.05 | % |  |  | 8.41 | %

X
- References No definition available. + Details
Name: | us-gaap_ContractorsAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Tabular disclosure of fees earned by the broker commission. + References No definition available. + Details
Name: | uso_BrokerageCommissionsTableTextBlock
Namespace Prefix: | uso_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration