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FEES PAID BY THE FUND AND RELATED PARTY TRANSACTIONS (Details)
 3 Months Ended 12 Months Ended
Mar. 31, 2024
USD ($)
Mar. 31, 2023
USD ($)
Dec. 31, 2024
USD ($)
FEES PAID BY THE FUND AND RELATED PARTY TRANSACTIONS      
Directors fees and expenses $ 65,964 $ 37,384  
Licensing fee incurred $ 30,624 32,679  
Investor tax reporting cost     $ 1,500,000
UNG      
FEES PAID BY THE FUND AND RELATED PARTY TRANSACTIONS      
Monthly fee obligated to pay on average daily total net assets, maximum base fee 1,000,000,000 (as a percentage) 0.60    
Average daily total net assets $ 1,000,000,000    
Monthly fee obligated to pay on average daily total net assets (as a percentage) 0.50    
Directors fees and expenses     304,000
UNG and the Related Public Funds      
FEES PAID BY THE FUND AND RELATED PARTY TRANSACTIONS      
Directors fees and expenses     $ 945,000
Licensing Agreements      
FEES PAID BY THE FUND AND RELATED PARTY TRANSACTIONS      
Fee percentage 0.015%    
United States Oil Fund LP      
FEES PAID BY THE FUND AND RELATED PARTY TRANSACTIONS      
Registration fees and offering expenses $ 0 $ 0