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v3.19.2

FEES PAID BY THE FUND AND RELATED PARTY TRANSACTIONS (Details) | 3 Months Ended | 6 Months Ended | 12 Months Ended
--- | --- | --- | ---
Jun. 30, 2019 USD ($) | Jun. 30, 2018 USD ($) | Jun. 30, 2019 USD ($) | Jun. 30, 2018 USD ($) | Dec. 31, 2019 USD ($)
Fees Paid and Related Party Transactions [Line Items] |  |  |  |  |
Licensing fee incurred | $ 10,307 | $ 13,326 | $ 21,130 | $ 29,543 |
Estimated directors fees and expenses | 13,382 | $ 17,345 | 30,583 | 32,723 |
Scenario, Forecast [Member] |  |  |  |  |
Fees Paid and Related Party Transactions [Line Items] |  |  |  |  |
Estimated investor tax reporting cost |  |  |  |  | $ 675,000
USNG and the Related Public Funds [Member] | Scenario, Forecast [Member] |  |  |  |  |
Fees Paid and Related Party Transactions [Line Items] |  |  |  |  |
Estimated directors fees and expenses |  |  |  |  | 65,000
UNITED STATES GAS FUND LP [Member] |  |  |  |  |
Fees Paid and Related Party Transactions [Line Items] |  |  |  |  |
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 |  |
UNITED STATES GAS FUND LP [Member] | Scenario, Forecast [Member] |  |  |  |  |
Fees Paid and Related Party Transactions [Line Items] |  |  |  |  |
Estimated directors fees and expenses |  |  |  |  | $ 543,500
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 |  |  | $ 40,819 | $ 53,825 |

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