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ORGANIZATION AND BUSINESS (Additional Information) (Details) (USD $)
 1 Months Ended
Nov. 30, 2009
Number
Nov. 18, 2009
Mar. 31, 2014
Dec. 31, 2013
Mar. 31, 2013
Dec. 31, 2012
Organization, Consolidation and Presentation of Financial Statements Disclosure [Line Items]            
Fee paid by Authorized Purchasers for each order placed to create one or more Creation Baskets or to redeem one or more baskets     350      
Number of initially registered units on Form S-1 with the U.S. Securities and Exchange Commission 30,000,000          
Net asset value per share   $ 50.00 $ 19.63 $ 18.32 $ 19.28 $ 17.23
Number of units issued   200,000        
Value of unit issued   $ 10,000,000        
Commenced investment operations date   Nov. 18, 2009        
Number of registered units     30,000,000      
Creation Baskets [Member]
            
Organization, Consolidation and Presentation of Financial Statements Disclosure [Line Items]            
Number of units per basket     50,000      
Open Futures Contracts, Long [Member] | United States [Member]
            
Organization, Consolidation and Presentation of Financial Statements Disclosure [Line Items]            
Number of Contracts     463 [1]      
[1] Collateral amounted to $308,837 on open futures contracts.