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CONTRACTS AND AGREEMENTS (Details)
 3 Months Ended
Oct. 01, 2022
Sep. 30, 2022
USD ($)
Mar. 31, 2024
USD ($)
$ / item
Mar. 31, 2023
USD ($)
Futures Contracts        
CONTRACTS AND AGREEMENTS        
Derivative notional amount     $ 724,968,196 $ 848,637,568
Minimum        
CONTRACTS AND AGREEMENTS        
Commissions per round-turn trade, including applicable exchange and NFA fees for Futures Contracts and options on Futures Contracts | $ / item     7  
Percentage of flat fee     0.20%  
Maximum        
CONTRACTS AND AGREEMENTS        
Commissions per round-turn trade, including applicable exchange and NFA fees for Futures Contracts and options on Futures Contracts | $ / item     8  
Percentage of flat fee     0.30%  
USNG's assets up to $3 billion | Marketing Agreement        
CONTRACTS AND AGREEMENTS        
Fee percentage   0.06%    
Base amount for determining fee percentage   $ 3,000,000,000    
USNG's assets in excess of $3 billion | Marketing Agreement        
CONTRACTS AND AGREEMENTS        
Fee percentage     10.00%  
Percentage of total net assets 0.025%      
USNG's assets in excess of $3 billion | Marketing Agreement | Minimum        
CONTRACTS AND AGREEMENTS        
Fee percentage   0.04%    
Base amount for determining fee percentage   $ 3,000,000,000