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FEES PAID BY THE FUND AND RELATED PARTY TRANSACTIONS (Details) | 3 Months Ended | 6 Months Ended | 12 Months Ended
--- | --- | --- | ---
Jun. 30, 2021 USD ($) | Jun. 30, 2020 USD ($) | Mar. 31, 2020 USD ($) | Jun. 30, 2021 USD ($) | Jun. 30, 2020 USD ($) | Dec. 31, 2021 USD ($)
Fees Paid and Related Party Transactions [Line Items] |  |  |  |  |  |
Licensing fee incurred | $ 9,733 | $ 14,531 |  | $ 22,757 | $ 31,735 |
Estimated investor tax reporting cost |  |  |  |  |  | $ 725,000
Estimated directors fees and expenses | 19,092 | $ 19,695 |  | $ 37,983 | $ 44,198 | 65,000
USNG and the Related Public Funds [Member] |  |  |  |  |  |
Fees Paid and Related Party Transactions [Line Items] |  |  |  |  |  |
Estimated directors fees and expenses |  |  |  |  |  | $ 1,061,000
UNITED STATES GAS FUND LP [Member] |  |  |  |  |  |
Fees Paid and Related Party Transactions [Line Items] |  |  |  |  |  |
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 |  |  | $ 1,000,000,000 |  |
Monthly fee obligated to pay on average daily total net assets (as a percentage) |  |  |  | 0.50 |  |
Licensing Agreements [Member] |  |  |  |  |  |
Fees Paid and Related Party Transactions [Line Items] |  |  |  |  |  |
Fee percentage |  |  |  | 0.015% |  |
United States Oil Fund LP [Member] |  |  |  |  |  |
Fees Paid and Related Party Transactions [Line Items] |  |  |  |  |  |
Ongoing Registration Fees and Other Offering Expenses |  |  | $ 180,000 | $ 103,290 |  |

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