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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, 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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Amount of daily average total net assets outastanding.

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Percentage of fee obligated to pay by UNG that are greater than average daily total net assets.

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Registration Fees And Other Offering Expenses

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Noninterest expense related to directors' fees which are fees paid by an Entity to its directors. Directors' fees may be paid in addition to salary and other benefits.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 942
-SubTopic 220
-Section S99
-Paragraph 1
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Amount of general expenses not normally included in Other Operating Costs and Expenses.

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Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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-Name Accounting Standards Codification
-Topic 220
-SubTopic 10
-Section S99
-Paragraph 2
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