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ORGANIZATION AND BUSINESS (Details Textual) (USD $)
 0 Months Ended 1 Months Ended 18 Months Ended
Jun. 02, 2010
Feb. 29, 2012
Dec. 31, 2012
Dec. 31, 2011
Dec. 31, 2010
May 31, 2010
Dec. 31, 2009
Units Issued During Period To Authorized Purchasers Through Distributors   50,000          
Units Issued During Period To Authorized Purchasers Through Marketing Agent   100,000          
Transaction Fee     $ 350        
Initially Registered Units Of Entity With Sec           50,000,000  
Net asset value per unit $ 50.00   $ 81.95 $ 74.54 $ 63.08   $ 50.00 [1]
Initial stock units issued 200,000            
Initial Units Value, Issued 10,000,000            
Total Units Registered Of Entity     50,000,000        
Prior to February 29, 2012
              
Transaction Fee     $ 1,000        
[1] The commencement of operations of the United States Brent Oil Fund, LP was June 2, 2010.