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FEES PAID BY THE FUND AND RELATED PARTY TRANSACTIONS (Details)
 12 Months Ended
Dec. 31, 2024
USD ($)
Dec. 31, 2023
USD ($)
Dec. 31, 2022
USD ($)
FEES PAID BY THE FUND AND RELATED PARTY TRANSACTIONS      
Directors fees and expenses $ 277,838 $ 220,736 $ 106,413
Licensing fee incurred 122,200 156,303 70,615
Investor tax reporting cost $ 2,202,754 1,120,961 1,243,549
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) 0.6    
Average daily total net assets $ 1,000,000,000    
Monthly fee obligated to pay on average daily total net assets (as a percentage) 0.5    
Directors fees and expenses $ 277,838 220,736 106,413
UNG and the Related Public Funds      
FEES PAID BY THE FUND AND RELATED PARTY TRANSACTIONS      
Directors fees and expenses $ 916,574 1,210,000 1,258,000
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 $ 43,490 $ 0 $ 0