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ORGANIZATION AND BUSINESS - Additional Information (Details)
Dec. 06, 2007
USD ($)
$ / shares
shares
Dec. 31, 2021
USD ($)
$ / shares
$ / item
shares
Dec. 31, 2020
contract
$ / shares
Dec. 31, 2019
$ / shares
Dec. 31, 2018
$ / shares
Dec. 04, 2007
shares
Organization, Consolidation and Presentation of Financial Statements Disclosure [Line Items]            
Net asset value per share | $ / shares $ 50.00 $ 27.81 $ 17.23 $ 22.95 $ 17.82  
Number of shares issued | shares 300,000          
Value of shares issued | $ $ 15,000,000          
Number of registered shares | shares   311,000,000       11,000,000
Creation Baskets            
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 shares per basket | $ / item   50,000        
United States Contracts | Open Futures Contracts, Long            
Organization, Consolidation and Presentation of Financial Statements Disclosure [Line Items]            
Number of Contracts   1,902 [1] 4,069 [2]      
[1] Collateral amounted to $30,014,301 on open commodity futures contracts.
[2] Collateral amounted to $15,259,310 on open commodity futures contracts.