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CONTRACTS AND AGREEMENTS (Tables)
 6 Months Ended
Jun. 30, 2015
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 six months ended
 
 
For the six months ended
 
 
 
June 30, 2015
 
 
June 30, 2014
 
Total commissions accrued to brokers
 
$
55,765
 
 
$
10,750
 
Total commissions as an annualized percentage of average net assets
 
 
0.11
%
 
 
0.07
%
Commissions accrued as a result of rebalancing
 
$
51,889
 
 
$
9,683
 
Percentage of commissions accrued as a result of rebalancing
 
 
93.05
%
 
 
90.08
%
Commissions accrued as a result of creation and redemption activity
 
$
3,876
 
 
$
1,067
 
Percentage of commissions accrued as a result of creation and redemption activity
 
 
6.95
%
 
 
9.92
%