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CONTRACTS AND AGREEMENTS (Tables) | 12 Months Ended
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Dec. 31, 2017
Contractors [Abstract] |
Brokerage Commissions | BNO also incurs commissions to brokers for the purchase and sale of Futures Contracts, Other Crude 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 |  | $ | 132,707 |  |  | $ | 165,409 |  |  | $ | 114,922 |
Total commissions as annualized percentage of average total net assets |  |  | 0.13 | % |  |  | 0.15 | % |  |  | 0.12 | %
Commissions accrued as a result of rebalancing |  | $ | 127,847 |  |  | $ | 160,817 |  |  | $ | 107,744 |
Percentage of commissions accrued as a result of rebalancing |  |  | 96.34 | % |  |  | 97.22 | % |  |  | 93.75 | %
Commissions accrued as a result of creation and redemption activity |  | $ | 4,860 |  |  | $ | 4,592 |  |  | $ | 7,178 |
Percentage of commissions accrued as a result of creation and redemption activity |  |  | 3.66 | % |  |  | 2.78 | % |  |  | 6.25 | %

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