XML 34 R18.htm IDEA: XBRL DOCUMENT
v3.4.0.3

CONTRACTS AND AGREEMENTS (Tables) | 3 Months Ended
--- | ---
Mar. 31, 2016
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 three months ended March 31, 2016 |  |  | For the three months ended March 31, 2015 |
Total commissions accrued to brokers |  | $ | 2,229,168 |  |  | $ | 1,187,217 |
Total commissions as an annualized percentage of average total net assets |  |  | 0.26 | % |  |  | 0.21 | %
Commissions accrued as a result of rebalancing |  | $ | 2,004,368 |  |  | $ | 958,970 |
Percentage of commissions accrued as a result of rebalancing |  |  | 89.92 | % |  |  | 80.77 | %
Commissions accrued as a result of creation and redemption activity |  | $ | 224,800 |  |  | $ | 228,247 |
Percentage of commissions accrued as a result of creation and redemption activity |  |  | 10.08 | % |  |  | 19.23 | %

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