United States Gasoline Fund (UGA) 10-K 14 Mar 18 2017 FY Annual report Financial data

Document And Entity Information

Document And Entity Information - USD ($)	12 Months Ended
	Dec. 31, 2017	Mar. 12, 2018	Jun. 30, 2017
Document Information [Line Items]
Document Type	10-K
Amendment Flag	false
Document Period End Date	Dec. 31, 2017
Document Fiscal Year Focus	2,017
Document Fiscal Period Focus	FY
Entity Registrant Name	United States Gasoline Fund, LP
Entity Central Index Key	1,396,878
Current Fiscal Year End Date	--12-31
Entity Well-known Seasoned Issuer	No
Entity Voluntary Filers	No
Entity Current Reporting Status	Yes
Entity Filer Category	Accelerated Filer
Entity Public Float			$ 63,050,000
Trading Symbol	UGA
Entity Common Stock, Shares Outstanding		1,450,000

Statements of Financial Conditi

Statements of Financial Condition - USD ($)	Dec. 31, 2017	Dec. 31, 2016
Assets
Cash and cash equivalents (at cost $41,233,887 and $64,219,425, respectively) (Notes 2 and 5)	$ 41,233,887	$ 64,219,425
Equity in trading accounts:
Cash and cash equivalents (at cost $3,992,699 and $2,277,668, respectively)	3,992,699	2,277,668
Unrealized gain (loss) on open commodity futures contracts	3,298,768	3,980,138
Receivable from General Partner (Note 3)	231,179	269,909
Dividends receivable	1,962	2,915
Interest receivable	994	0
Prepaid registration fees	0	31,658
Total assets	48,759,489	70,781,713
Liabilities and Partners' Capital
Payable due to Broker	496,140	0
General Partner management fees payable (Note 3)	25,039	34,123
Professional fees payable	170,701	155,334
Brokerage commissions payable	2,963	4,513
Directors' fees and insurance payable	541	446
License fees payable	1,378	2,733
Registration fees payable	14,795	0
Total liabilities	711,557	197,149
Commitments and Contingencies (Notes 3, 4 and 5)
Partners' Capital
General Partner	0	0
Limited Partners	48,047,932	70,584,564
Total Partners' Capital	48,047,932	70,584,564
Total liabilities and partners' capital	$ 48,759,489	$ 70,781,713
Limited Partners' shares outstanding	1,500,000	2,250,000
Net asset value per share	$ 32.03	$ 31.37
Market value per share	$ 31.85	$ 31.32

Schedule of Investments

Schedule of Investments		Dec. 31, 2017USD ($)Contract	Dec. 31, 2016USD ($)Contract
United States [Member] | Money Market Funds
Market Value		$ 2,500,000	$ 10,000,000
% of Partners' Capital		5.20%	14.17%
United States [Member] | Money Market Funds | Fidelity Investments Money Market Funds - Government Portfolio
Principal Amount		$ 1,500,000	$ 6,000,000
Market Value		$ 1,500,000	$ 6,000,000
% of Partners' Capital		3.12%	8.50%
United States [Member] | Money Market Funds | Goldman Sachs Financial Square Funds - Government Fund - Class FS
Principal Amount		$ 500,000	$ 4,000,000
Market Value		$ 500,000	$ 4,000,000
% of Partners' Capital		1.04%	5.67%
United States [Member] | Money Market Funds | Morgan Stanley Institutional Liquidity Funds - Government Portfolio
Principal Amount		$ 500,000
Market Value		$ 500,000
% of Partners' Capital		1.04%
Open Futures Contracts, Long [Member] | United States [Member] | NYMEX RBOB Gasoline Futures RB February 2018 contracts, expiring January 2018
Notional Amount	[1]	$ 44,746,065
Number of contracts | Contract	[1]	637
Value/ Unrealized Gain (Loss) on Open Commodity Contracts	[1]	$ 3,298,768
% of Partners' Capital	[1]	6.87%
Open Futures Contracts, Long [Member] | United States [Member] | NYMEX RBOB Gasoline Futures RB February 2017 contracts, expiring January 2017
Notional Amount	[2]		$ 66,618,728
Number of contracts | Contract	[2]		1,006
Value/ Unrealized Gain (Loss) on Open Commodity Contracts	[2]		$ 3,980,138
% of Partners' Capital	[2]		5.64%
Cash Equivalents | United States Treasury Obligations
Market Value		$ 41,876,485	$ 40,939,944
% of Partners' Capital		87.16%	58.00%
Cash Equivalents | United States Treasury Obligations | U.S. Treasury Bills,1.12%, 1/04/2018 [Member]
Principal Amount		$ 2,000,000
Market Value		$ 1,999,814
% of Partners' Capital		4.16%
Cash Equivalents | United States Treasury Obligations | U.S. Treasury Bills,1.11%, 1/11/2018 [Member]
Principal Amount		$ 2,000,000
Market Value		$ 1,999,386
% of Partners' Capital		4.16%
Cash Equivalents | United States Treasury Obligations | U.S. Treasury Bills,1.10%, 1/18/2018 [Member]
Principal Amount		$ 2,000,000
Market Value		$ 1,998,971
% of Partners' Capital		4.16%
Cash Equivalents | United States Treasury Obligations | U.S. Treasury Bills,1.12%, 1/25/2018 [Member]
Principal Amount		$ 2,000,000
Market Value		$ 1,998,513
% of Partners' Capital		4.16%
Cash Equivalents | United States Treasury Obligations | U.S. Treasury Bills,1.12%, 2/01/2018 [Member]
Principal Amount		$ 2,000,000
Market Value		$ 1,998,080
% of Partners' Capital		4.16%
Cash Equivalents | United States Treasury Obligations | U.S. Treasury Bills,1.13%, 2/08/2018 [Member]
Principal Amount		$ 2,000,000
Market Value		$ 1,997,625
% of Partners' Capital		4.16%
Cash Equivalents | United States Treasury Obligations | U.S. Treasury Bills,1.12%, 2/15/2018 [Member]
Principal Amount		$ 2,000,000
Market Value		$ 1,997,225
% of Partners' Capital		4.16%
Cash Equivalents | United States Treasury Obligations | U.S. Treasury Bills,1.10%, 2/22/2018 [Member]
Principal Amount		$ 2,000,000
Market Value		$ 1,996,851
% of Partners' Capital		4.16%
Cash Equivalents | United States Treasury Obligations | U.S. Treasury Bills,1.09%, 3/01/2018 [Member]
Principal Amount		$ 3,000,000
Market Value		$ 2,994,665
% of Partners' Capital		6.23%
Cash Equivalents | United States Treasury Obligations | U.S. Treasury Bills,1.14%, 3/08/2018 [Member]
Principal Amount		$ 2,000,000
Market Value		$ 1,995,848
% of Partners' Capital		4.15%
Cash Equivalents | United States Treasury Obligations | U.S. Treasury Bills,1.14%, 3/15/2018 [Member]
Principal Amount		$ 2,000,000
Market Value		$ 1,995,417
% of Partners' Capital		4.15%
Cash Equivalents | United States Treasury Obligations | U.S. Treasury Bills,1.17%, 3/29/2018 [Member]
Principal Amount		$ 2,000,000
Market Value		$ 1,994,393
% of Partners' Capital		4.15%
Cash Equivalents | United States Treasury Obligations | U.S. Treasury Bills,1.19%, 4/05/2018 [Member]
Principal Amount		$ 1,000,000
Market Value		$ 996,906
% of Partners' Capital		2.08%
Cash Equivalents | United States Treasury Obligations | U.S. Treasury Bills,1.22%, 4/12/2018 [Member]
Principal Amount		$ 2,000,000
Market Value		$ 1,993,183
% of Partners' Capital		4.15%
Cash Equivalents | United States Treasury Obligations | U.S. Treasury Bills,1.23%, 4/19/2018 [Member]
Principal Amount		$ 1,000,000
Market Value		$ 996,348
% of Partners' Capital		2.07%
Cash Equivalents | United States Treasury Obligations | U.S. Treasury Bills,1.25%, 4/26/2018 [Member]
Principal Amount		$ 1,000,000
Market Value		$ 996,039
% of Partners' Capital		2.07%
Cash Equivalents | United States Treasury Obligations | U.S. Treasury Bills,1.27%, 5/03/2018 [Member]
Principal Amount		$ 1,000,000
Market Value		$ 995,730
% of Partners' Capital		2.07%
Cash Equivalents | United States Treasury Obligations | U.S. Treasury Bills,1.32%, 5/10/2018 [Member]
Principal Amount		$ 1,000,000
Market Value		$ 995,306
% of Partners' Capital		2.07%
Cash Equivalents | United States Treasury Obligations | U.S. Treasury Bills,1.37%, 5/17/2018 [Member]
Principal Amount		$ 1,000,000
Market Value		$ 994,872
% of Partners' Capital		2.07%
Cash Equivalents | United States Treasury Obligations | U.S. Treasury Bills,1.43%, 5/24/2018 [Member]
Principal Amount		$ 1,000,000
Market Value		$ 994,379
% of Partners' Capital		2.07%
Cash Equivalents | United States Treasury Obligations | U.S. Treasury Bills,1.43%, 5/31/2018 [Member]
Principal Amount		$ 1,000,000
Market Value		$ 994,083
% of Partners' Capital		2.07%
Cash Equivalents | United States Treasury Obligations | U.S. Treasury Bills,1.45%, 6/07/2018 [Member]
Principal Amount		$ 2,000,000
Market Value		$ 1,987,440
% of Partners' Capital		4.14%
Cash Equivalents | United States Treasury Obligations | U.S. Treasury Bills,1.46%, 6/14/2018 [Member]
Principal Amount		$ 2,000,000
Market Value		$ 1,986,834
% of Partners' Capital		4.14%
Cash Equivalents | United States Treasury Obligations | U.S. Treasury Bills,1.49%, 6/21/2018 [Member]
Principal Amount		$ 2,000,000
Market Value		$ 1,985,944
% of Partners' Capital		4.13%
Cash Equivalents | United States Treasury Obligations | U.S. Treasury Bills,1.50%, 6/28/2018 [Member]
Principal Amount		$ 1,000,000
Market Value		$ 992,633
% of Partners' Capital		2.07%
Cash Equivalents | United States Treasury Obligations | U.S. Treasury Bills,0.34%, 1/05/2017 [Member]
Principal Amount			$ 2,000,000
Market Value			$ 1,999,924
% of Partners' Capital			2.83%
Cash Equivalents | United States Treasury Obligations | U.S. Treasury Bills,0.43%, 1/19/2017 [Member]
Principal Amount			$ 2,000,000
Market Value			$ 1,999,575
% of Partners' Capital			2.83%
Cash Equivalents | United States Treasury Obligations | U.S. Treasury Bills,0.40%, 2/02/2017 [Member]
Principal Amount			$ 2,000,000
Market Value			$ 1,999,289
% of Partners' Capital			2.83%
Cash Equivalents | United States Treasury Obligations | U.S. Treasury Bills,0.42%, 2/09/2017 [Member]
Principal Amount			$ 2,000,000
Market Value			$ 1,999,090
% of Partners' Capital			2.83%
Cash Equivalents | United States Treasury Obligations | U.S. Treasury Bills,0.45%, 2/16/2017 [Member]
Principal Amount			$ 1,000,000
Market Value			$ 999,425
% of Partners' Capital			1.42%
Cash Equivalents | United States Treasury Obligations | U.S. Treasury Bills,0.45%, 2/23/2017 [Member]
Principal Amount			$ 1,000,000
Market Value			$ 999,345
% of Partners' Capital			1.42%
Cash Equivalents | United States Treasury Obligations | U.S. Treasury Bills,0.45%, 3/02/2017 [Member]
Principal Amount			$ 1,000,000
Market Value			$ 999,250
% of Partners' Capital			1.42%
Cash Equivalents | United States Treasury Obligations | U.S. Treasury Bills,0.47%, 3/09/2017 [Member]
Principal Amount			$ 2,000,000
Market Value			$ 1,998,251
% of Partners' Capital			2.83%
Cash Equivalents | United States Treasury Obligations | U.S. Treasury Bills,0.50%, 3/16/2017 [Member]
Principal Amount			$ 2,000,000
Market Value			$ 1,997,934
% of Partners' Capital			2.83%
Cash Equivalents | United States Treasury Obligations | U.S. Treasury Bills,0.45%, 3/23/2017 [Member]
Principal Amount			$ 2,000,000
Market Value			$ 1,997,997
% of Partners' Capital			2.83%
Cash Equivalents | United States Treasury Obligations | U.S. Treasury Bills,0.43%, 3/30/2017 [Member]
Principal Amount			$ 2,000,000
Market Value			$ 1,997,898
% of Partners' Capital			2.83%
Cash Equivalents | United States Treasury Obligations | U.S. Treasury Bills,0.46%, 4/06/2017 [Member]
Principal Amount			$ 2,000,000
Market Value			$ 1,997,599
% of Partners' Capital			2.83%
Cash Equivalents | United States Treasury Obligations | U.S. Treasury Bills,0.47%, 4/13/2017 [Member]
Principal Amount			$ 2,000,000
Market Value			$ 1,997,337
% of Partners' Capital			2.83%
Cash Equivalents | United States Treasury Obligations | U.S. Treasury Bills,0.46%, 4/20/2017 [Member]
Principal Amount			$ 2,000,000
Market Value			$ 1,997,245
% of Partners' Capital			2.83%
Cash Equivalents | United States Treasury Obligations | U.S. Treasury Bills,0.47%, 4/27/2017 [Member]
Principal Amount			$ 2,000,000
Market Value			$ 1,997,003
% of Partners' Capital			2.83%
Cash Equivalents | United States Treasury Obligations | U.S. Treasury Bills,0.49%, 5/04/2017 [Member]
Principal Amount			$ 1,000,000
Market Value			$ 998,317
% of Partners' Capital			1.41%
Cash Equivalents | United States Treasury Obligations | U.S. Treasury Bills,0.55%, 5/11/2017 [Member]
Principal Amount			$ 1,000,000
Market Value			$ 998,032
% of Partners' Capital			1.41%
Cash Equivalents | United States Treasury Obligations | U.S. Treasury Bills,0.60%, 5/18/2017 [Member]
Principal Amount			$ 1,000,000
Market Value			$ 997,736
% of Partners' Capital			1.41%
Cash Equivalents | United States Treasury Obligations | U.S. Treasury Bills,0.61%, 5/25/2017 [Member]
Principal Amount			$ 1,000,000
Market Value			$ 997,570
% of Partners' Capital			1.41%
Cash Equivalents | United States Treasury Obligations | U.S. Treasury Bills,0.60%, 6/01/2017 [Member]
Principal Amount			$ 1,000,000
Market Value			$ 997,504
% of Partners' Capital			1.41%
Cash Equivalents | United States Treasury Obligations | U.S. Treasury Bills,0.62%, 6/08/2017 [Member]
Principal Amount			$ 2,000,000
Market Value			$ 1,994,602
% of Partners' Capital			2.83%
Cash Equivalents | United States Treasury Obligations | U.S. Treasury Bills,0.65%, 6/15/2017 [Member]
Principal Amount			$ 2,000,000
Market Value			$ 1,994,087
% of Partners' Capital			2.83%
Cash Equivalents | United States Treasury Obligations | U.S. Treasury Bills,0.64%, 6/22/2017 [Member]
Principal Amount			$ 2,000,000
Market Value			$ 1,993,884
% of Partners' Capital			2.83%
Cash Equivalents | United States Treasury Obligations | U.S. Treasury Bills,0.60%, 6/29/2017 [Member]
Principal Amount			$ 3,000,000
Market Value			$ 2,991,050
% of Partners' Capital			4.24%
Cash Equivalents | United States [Member]
Market Value		$ 44,376,485	$ 50,939,944
% of Partners' Capital		92.36%	72.17%
[1]	Collateral amounted to $3,992,699 on open futures contracts.
[2]	Collateral amounted to $2,277,668 on open futures contracts.

Schedule of Investments (Parent

Schedule of Investments (Parenthetical) - USD ($)	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016
Debt Instrument, Collateral Amount	$ 3,992,699	$ 2,277,668
United States [Member] | US Treasury Securities [Member] | Cash Equivalents | U.S. Treasury Bills,1.12%, 1/04/2018 [Member]
Interest rate	1.12%
Expiration date	1/04/2018
United States [Member] | US Treasury Securities [Member] | Cash Equivalents | U.S. Treasury Bills,1.11%, 1/11/2018 [Member]
Interest rate	1.11%
Expiration date	1/11/2018
United States [Member] | US Treasury Securities [Member] | Cash Equivalents | U.S. Treasury Bills,1.10%, 1/18/2018 [Member]
Interest rate	1.10%
Expiration date	1/18/2018
United States [Member] | US Treasury Securities [Member] | Cash Equivalents | U.S. Treasury Bills,1.12%, 1/25/2018 [Member]
Interest rate	1.12%
Expiration date	1/25/2018
United States [Member] | US Treasury Securities [Member] | Cash Equivalents | U.S. Treasury Bills,1.12%, 2/01/2018 [Member]
Interest rate	1.12%
Expiration date	2/01/2018
United States [Member] | US Treasury Securities [Member] | Cash Equivalents | U.S. Treasury Bills,1.13%, 2/08/2018 [Member]
Interest rate	1.13%
Expiration date	2/08/2018
United States [Member] | US Treasury Securities [Member] | Cash Equivalents | U.S. Treasury Bills,1.12%, 2/15/2018 [Member]
Interest rate	1.12%
Expiration date	2/15/2018
United States [Member] | US Treasury Securities [Member] | Cash Equivalents | U.S. Treasury Bills,1.10%, 2/22/2018 [Member]
Interest rate	1.10%
Expiration date	2/22/2018
United States [Member] | US Treasury Securities [Member] | Cash Equivalents | U.S. Treasury Bills,1.09%, 3/01/2018 [Member]
Interest rate	1.09%
Expiration date	3/01/2018
United States [Member] | US Treasury Securities [Member] | Cash Equivalents | U.S. Treasury Bills,1.14%, 3/08/2018 [Member]
Interest rate	1.14%
Expiration date	3/08/2018
United States [Member] | US Treasury Securities [Member] | Cash Equivalents | U.S. Treasury Bills,1.14%, 3/15/2018 [Member]
Interest rate	1.14%
Expiration date	3/15/2018
United States [Member] | US Treasury Securities [Member] | Cash Equivalents | U.S. Treasury Bills,1.17%, 3/29/2018 [Member]
Interest rate	1.17%
Expiration date	3/29/2018
United States [Member] | US Treasury Securities [Member] | Cash Equivalents | U.S. Treasury Bills,1.19%, 4/05/2018 [Member]
Interest rate	1.19%
Expiration date	4/05/2018
United States [Member] | US Treasury Securities [Member] | Cash Equivalents | U.S. Treasury Bills,1.22%, 4/12/2018 [Member]
Interest rate	1.22%
Expiration date	4/12/2018
United States [Member] | US Treasury Securities [Member] | Cash Equivalents | U.S. Treasury Bills,1.23%, 4/19/2018 [Member]
Interest rate	1.23%
Expiration date	4/19/2018
United States [Member] | US Treasury Securities [Member] | Cash Equivalents | U.S. Treasury Bills,1.25%, 4/26/2018 [Member]
Interest rate	1.25%
Expiration date	4/26/2018
United States [Member] | US Treasury Securities [Member] | Cash Equivalents | U.S. Treasury Bills,1.27%, 5/03/2018 [Member]
Interest rate	1.27%
Expiration date	5/03/2018
United States [Member] | US Treasury Securities [Member] | Cash Equivalents | U.S. Treasury Bills,1.32%, 5/10/2018 [Member]
Interest rate	1.32%
Expiration date	5/10/2018
United States [Member] | US Treasury Securities [Member] | Cash Equivalents | U.S. Treasury Bills,1.37%, 5/17/2018 [Member]
Interest rate	1.37%
Expiration date	5/17/2018
United States [Member] | US Treasury Securities [Member] | Cash Equivalents | U.S. Treasury Bills,1.43%, 5/24/2018 [Member]
Interest rate	1.43%
Expiration date	5/24/2018
United States [Member] | US Treasury Securities [Member] | Cash Equivalents | U.S. Treasury Bills,1.43%, 5/31/2018 [Member]
Interest rate	1.43%
Expiration date	5/31/2018
United States [Member] | US Treasury Securities [Member] | Cash Equivalents | U.S. Treasury Bills,1.45%, 6/07/2018 [Member]
Interest rate	1.45%
Expiration date	6/07/2018
United States [Member] | US Treasury Securities [Member] | Cash Equivalents | U.S. Treasury Bills,1.46%, 6/14/2018 [Member]
Interest rate	1.46%
Expiration date	6/14/2018
United States [Member] | US Treasury Securities [Member] | Cash Equivalents | U.S. Treasury Bills,1.49%, 6/21/2018 [Member]
Interest rate	1.49%
Expiration date	6/21/2018
United States [Member] | US Treasury Securities [Member] | Cash Equivalents | U.S. Treasury Bills,1.50%, 6/28/2018 [Member]
Interest rate	1.50%
Expiration date	6/28/2018
United States [Member] | US Treasury Securities [Member] | Cash Equivalents | U.S. Treasury Bills,0.34%, 1/05/2017 [Member]
Interest rate		0.34%
Expiration date		1/05/2017
United States [Member] | US Treasury Securities [Member] | Cash Equivalents | U.S. Treasury Bills,0.43%, 1/19/2017 [Member]
Interest rate		0.43%
Expiration date		1/19/2017
United States [Member] | US Treasury Securities [Member] | Cash Equivalents | U.S. Treasury Bills,0.40%, 2/02/2017 [Member]
Interest rate		0.40%
Expiration date		2/02/2017
United States [Member] | US Treasury Securities [Member] | Cash Equivalents | U.S. Treasury Bills,0.42%, 2/09/2017 [Member]
Interest rate		0.42%
Expiration date		2/09/2017
United States [Member] | US Treasury Securities [Member] | Cash Equivalents | U.S. Treasury Bills,0.45%, 2/16/2017 [Member]
Interest rate		0.45%
Expiration date		2/16/2017
United States [Member] | US Treasury Securities [Member] | Cash Equivalents | U.S. Treasury Bills,0.45%, 2/23/2017 [Member]
Interest rate		0.45%
Expiration date		2/23/2017
United States [Member] | US Treasury Securities [Member] | Cash Equivalents | U.S. Treasury Bills,0.45%, 3/02/2017 [Member]
Interest rate		0.45%
Expiration date		3/02/2017
United States [Member] | US Treasury Securities [Member] | Cash Equivalents | U.S. Treasury Bills,0.47%, 3/09/2017 [Member]
Interest rate		0.47%
Expiration date		3/09/2017
United States [Member] | US Treasury Securities [Member] | Cash Equivalents | U.S. Treasury Bills,0.50%, 3/16/2017 [Member]
Interest rate		0.50%
Expiration date		3/16/2017
United States [Member] | US Treasury Securities [Member] | Cash Equivalents | U.S. Treasury Bills,0.45%, 3/23/2017 [Member]
Interest rate		0.45%
Expiration date		3/23/2017
United States [Member] | US Treasury Securities [Member] | Cash Equivalents | U.S. Treasury Bills,0.43%, 3/30/2017 [Member]
Interest rate		0.43%
Expiration date		3/30/2017
United States [Member] | US Treasury Securities [Member] | Cash Equivalents | U.S. Treasury Bills,0.46%, 4/06/2017 [Member]
Interest rate		0.46%
Expiration date		4/06/2017
United States [Member] | US Treasury Securities [Member] | Cash Equivalents | U.S. Treasury Bills,0.47%, 4/13/2017 [Member]
Interest rate		0.47%
Expiration date		4/13/2017
United States [Member] | US Treasury Securities [Member] | Cash Equivalents | U.S. Treasury Bills,0.46%, 4/20/2017 [Member]
Interest rate		0.46%
Expiration date		4/20/2017
United States [Member] | US Treasury Securities [Member] | Cash Equivalents | U.S. Treasury Bills,0.47%, 4/27/2017 [Member]
Interest rate		0.47%
Expiration date		4/27/2017
United States [Member] | US Treasury Securities [Member] | Cash Equivalents | U.S. Treasury Bills,0.49%, 5/04/2017 [Member]
Interest rate		0.49%
Expiration date		5/04/2017
United States [Member] | US Treasury Securities [Member] | Cash Equivalents | U.S. Treasury Bills,0.55%, 5/11/2017 [Member]
Interest rate		0.55%
Expiration date		5/11/2017
United States [Member] | US Treasury Securities [Member] | Cash Equivalents | U.S. Treasury Bills,0.60%, 5/18/2017 [Member]
Interest rate		0.60%
Expiration date		5/18/2017
United States [Member] | US Treasury Securities [Member] | Cash Equivalents | U.S. Treasury Bills,0.61%, 5/25/2017 [Member]
Interest rate		0.61%
Expiration date		5/25/2017
United States [Member] | US Treasury Securities [Member] | Cash Equivalents | U.S. Treasury Bills,0.60%, 6/01/2017 [Member]
Interest rate		0.60%
Expiration date		6/01/2017
United States [Member] | US Treasury Securities [Member] | Cash Equivalents | U.S. Treasury Bills,0.62%, 6/08/2017 [Member]
Interest rate		0.62%
Expiration date		6/08/2017
United States [Member] | US Treasury Securities [Member] | Cash Equivalents | U.S. Treasury Bills,0.65%, 6/15/2017 [Member]
Interest rate		0.65%
Expiration date		6/15/2017
United States [Member] | US Treasury Securities [Member] | Cash Equivalents | U.S. Treasury Bills,0.64%, 6/22/2017 [Member]
Interest rate		0.64%
Expiration date		6/22/2017
United States [Member] | US Treasury Securities [Member] | Cash Equivalents | U.S. Treasury Bills,0.60%, 6/29/2017 [Member]
Interest rate		0.60%
Expiration date		6/29/2017

Statements of Operations

Statements of Operations - USD ($)		12 Months Ended
		Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Gain (loss) on trading of commodity futures contracts:
Realized gain (loss) on closed futures contracts		$ 864,192	$ 1,965,852	$ (11,985,649)
Change in unrealized gain (loss) on open futures contracts		(681,370)	3,452,912	3,362,528
Dividend income		31,618	50,717	6,657
Interest income*	[1]	460,679	195,116	40,432
ETF transaction fees		10,150	11,200	10,850
Total income (loss)		685,269	5,675,797	(8,565,182)
Expenses
General Partner management fees (Note 3)		361,298	442,079	494,612
Professional fees		185,986	211,188	179,466
Brokerage commissions		71,846	101,289	98,827
Directors' fees and insurance		8,185	10,319	10,840
License fees		9,033	11,052	12,365
Registration fees		46,454	46,581	46,453
Total expenses		682,802	822,508	842,563
Expense waiver (Note 3)		(231,179)	(269,909)	(224,565)
Net expenses		451,623	552,599	617,998
Net income (loss)		$ 233,646	$ 5,123,198	$ (9,183,180)
Net income (loss) per limited partnership share		$ 0.66	$ 2.07	$ (4.6)
Net income (loss) per weighted average limited partnership share		$ 0.11	$ 1.81	$ (3.88)
Weighted average limited partnership shares outstanding		2,192,877	2,835,519	2,367,260
[1]	Interest income does not exceed paid in kind of 5%.

Statement of Changes in Partner

Statement of Changes in Partners' Capital - USD ($)	Total	General Partner	Limited Partners
Balances at Dec. 31, 2014	$ 40,682,144	$ 0	$ 40,682,144
Addition of 2,000,000 partnership shares	66,727,593	0	66,727,593
Redemption of 600,000 partnership shares	(22,049,687)	0	(22,049,687)
Net income (loss)	(9,183,180)	0	(9,183,180)
Balances at Dec. 31, 2015	$ 76,176,870	0	76,176,870
Net asset value per share, beginning of year at Dec. 31, 2014	$ 33.90
Net asset value per share, end of year at Dec. 31, 2015	$ 29.30
Addition of 2,000,000 partnership shares	$ 29,027,170	0	29,027,170
Redemption of 600,000 partnership shares	(39,742,674)	0	(39,742,674)
Net income (loss)	5,123,198	0	5,123,198
Balances at Dec. 31, 2016	$ 70,584,564	0	70,584,564
Net asset value per share, end of year at Dec. 31, 2016	$ 31.37
Addition of 2,000,000 partnership shares	$ 31,756,763	0	31,756,763
Redemption of 600,000 partnership shares	(54,527,041)	0	(54,527,041)
Net income (loss)	233,646	0	233,646
Balances at Dec. 31, 2017	$ 48,047,932	$ 0	$ 48,047,932
Net asset value per share, end of year at Dec. 31, 2017	$ 32.03

Statement of Changes in Partne7

Statement of Changes in Partners' Capital (Parenthetical) - shares	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Addition of partnership units	1,150,000	1,200,000	2,000,000
Redemption of partnership units	1,900,000	1,550,000	600,000

Statements of Cash Flows

Statements of Cash Flows - USD ($)	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Cash Flows from Operating Activities:
Net income (loss)	$ 233,646	$ 5,123,198	$ (9,183,180)
Adjustments to reconcile net income (loss) to net cash provided by (used in) operating activities:
(Increase) decrease in commodity futures trading account - cash and cash equivalents	(1,715,031)	8,798,625	(4,914,712)
Unrealized (gain) loss on open futures contracts	681,370	(3,452,912)	(3,362,528)
(Increase) decrease in receivable from General Partner	38,730	(45,344)	(90,459)
(Increase) decrease in dividends receivable	953	(2,715)	768
(Increase) decrease in interest receivable	(994)	0	0
(Increase) decrease in directors' fees and insurance receivable	0	744	(71)
(Increase) decrease in prepaid registration fees	46,453	46,581	46,454
(Increase) decrease in ETF transaction fees receivable	0	0	350
Increase (decrease) in payable due to Broker	496,140	0	0
Increase (decrease) in General Partner management fees payable	(9,084)	(3,923)	15,602
Increase (decrease) in professional fees payable	15,367	27,394	2,818
Increase (decrease) in brokerage commissions payable	(1,550)	0	2,540
Increase (decrease) in directors' fees and insurance payable	95	446	0
Increase (decrease) in license fees payable	(1,355)	(181)	966
Net cash provided by (used in) operating activities	(215,260)	10,491,913	(17,481,452)
Cash Flows from Financing Activities:
Addition of partnership shares	31,756,763	29,027,170	68,416,865
Redemption of partnership shares	(54,527,041)	(39,742,674)	(22,049,687)
Net cash provided by (used in) financing activities	(22,770,278)	(10,715,504)	46,367,178
Net Increase (Decrease) in Cash and Cash Equivalents	(22,985,538)	(223,591)	28,885,726
Cash and Cash Equivalents, beginning of year	64,219,425	64,443,016	35,557,290
Cash and Cash Equivalents, end of year	$ 41,233,887	$ 64,219,425	$ 64,443,016

ORGANIZATION AND BUSINESS

ORGANIZATION AND BUSINESS	12 Months Ended
	Dec. 31, 2017
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Organization and Business	NOTE 1 — ORGANIZATION AND BUSINESS The United States Gasoline Fund, LP (“UGA”) was organized as a limited partnership under the laws of the state of Delaware on April 13, 2007. UGA is a commodity pool that issues limited partnership shares (“shares”) that may be purchased and sold on the NYSE Arca, Inc. (the “NYSE Arca”). Prior to November 25, 2008, UGA’s shares traded on the American Stock Exchange (the “AMEX”). UGA will continue in perpetuity, unless terminated sooner upon the occurrence of one or more events as described in its Third Amended and Restated Agreement of Limited Partnership dated as of December 15, 2017 (the “LP Agreement”). The investment objective of UGA is for the daily changes in percentage terms of its shares’ per share net asset value (“NAV”) to reflect the daily changes in percentage terms of the spot price of gasoline (also known as reformulated gasoline blendstock for oxygen blending, or “RBOB”, for delivery to the New York harbor), as measured by the daily changes in the price of the futures contract for gasoline traded on the New York Mercantile Exchange (the “NYMEX”) that is the near month contract to expire, except when the near month contract is within two weeks of expiration, in which case it will be measured by the futures contract that is the next month contract to expire (the “Benchmark Futures Contract”), plus interest earned on UGA’s collateral holdings, less UGA’s expenses. UGA’s investment objective is not nor greater than one day United States Commodity Funds LLC (“USCF”), the general partner of UGA, believes that it is not practical to manage the portfolio to achieve such an investment goal when investing in Futures Contracts (as defined below) and Other Gasoline-Related Investments (as defined below). UGA accomplishes its objective through investments in futures contracts for gasoline, crude oil, natural gas, diesel-heating oil and other petroleum-based fuels that are traded on the NYMEX, ICE Futures or other U.S. and foreign exchanges (collectively, “Futures Contracts”) and other gasoline-related investments such as cash-settled options on Futures Contracts, forward contracts for gasoline, cleared swap contracts and over-the-counter (“OTC”) transactions that are based on the price of gasoline, crude oil and other petroleum-based fuels, Futures Contracts and indices based on the foregoing (collectively, “Other Gasoline-Related Investments”). As of December 31, 2017, UGA held 637 UGA commenced investment operations on February 26, 2008 and has a fiscal year ending on December 31. USCF is responsible for the management of UGA. USCF is a member of the National Futures Association (the “NFA”) and became registered as a commodity pool operator with the Commodity Futures Trading Commission (the “CFTC”) effective December 1, 2005 and a swaps firm on August 8, 2013. USCF is also the general partner of the United States Oil Fund, LP (“USO”), the United States Natural Gas Fund, LP (“UNG”), the United States 12 Month Oil Fund, LP (“USL”) and the United States Diesel-Heating Oil Fund, LP (“UHN”), which listed their limited partnership shares on the AMEX under the ticker symbols “USO” on April 10, 2006, “UNG” on April 18, 2007, “USL” on December 6, 2007 and “UHN” on April 9, 2008, respectively. As a result of the acquisition of the AMEX by NYSE Euronext, each of USO’s, UNG’s, USL’s and UHN’s shares commenced trading on the NYSE Arca on November 25, 2008. USCF is also the general partner of the United States Short Oil Fund, LP (“DNO”), the United States 12 Month Natural Gas Fund, LP (“UNL”) and the United States Brent Oil Fund, LP (“BNO”), which listed their limited partnership shares on the NYSE Arca under the ticker symbols “DNO” on September 24, 2009, “UNL” on November 18, 2009 and “BNO” on June 2, 2010, respectively. USCF is also the sponsor of the United States Commodity Index Fund (“USCI”), the United States Copper Index Fund (“CPER”), the United States Agriculture Index Fund (“USAG”) and the USCF Canadian Crude Oil Index Fund (“UCCO”), each a series of the United States Commodity Index Funds Trust. USCI, CPER and USAG listed their shares on the NYSE Arca under the ticker symbols “USCI” on August 10, 2010, “CPER” on November 15, 2011 and “USAG” on April 13, 2012, respectively. UCCO is currently in registration and has not commenced operations. In addition, USCF is the sponsor of the USCF Funds Trust, a Delaware statutory trust, and each of its series, the REX S&P MLP Fund (“RMLP”) and the REX S&P MLP Inverse Fund (“MLPD”), which are currently in registration and have not commenced operations (together, the “REX Funds”), and the United States 3x Oil Fund (“USOU”) and the United States 3x Short Oil Fund (“USOD”), which commenced operations on July 20, 2017. All funds listed previously, other than UCCO and the REX Funds, are referred to collectively herein as the “Related Public Funds.” UGA issues shares to certain authorized purchasers (“Authorized Participants”) by offering baskets consisting of 50,000 Authorized Participants pay UGA a transaction fee of $ 350 In November 2007, UGA initially registered 30,000,000 50.00 300,000 15,000,000 80,000,000

SUMMARY OF SIGNIFICANT ACCOUNTI

SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES	12 Months Ended
	Dec. 31, 2017
Accounting Policies [Abstract]
Summary of Significant Accounting Policies	NOTE 2 — SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES The financial statements have been prepared in conformity with accounting principles generally accepted in the United States of America ("U.S. GAAP") as detailed in the Financial Accounting Standards Board’s (“FASB”) Accounting Standards Codification. UGA is an investment company and follows the accounting and reporting guidance in FASB Topic 946. Commodity futures contracts, forward contracts, physical commodities and related options are recorded on the trade date. All such transactions are recorded on the identified cost basis and marked to market daily. Unrealized gains or losses on open contracts are reflected in the statements of financial condition and represent the difference between the original contract amount and the market value (as determined by exchange settlement prices for futures contracts and related options and cash dealer prices at a predetermined time for forward contracts, physical commodities, and their related options) as of the last business day of the year or as of the last date of the financial statements. Changes in the unrealized gains or losses between periods are reflected in the statements of operations. UGA earns income on funds held at the custodian or futures commission merchant (“FCM”) at prevailing market rates earned on such investments. Brokerage commissions on all open commodity futures contracts are accrued on a full-turn basis. UGA is not subject to federal income taxes; each partner reports his/her allocable share of income, gain, loss deductions or credits on his/her own income tax return. In accordance with U.S. GAAP, UGA is required to determine whether a tax position is more likely than not to be sustained upon examination by the applicable taxing authority, including resolution of any tax related appeals or litigation processes, based on the technical merits of the position. UGA files an income tax return in the U.S. federal jurisdiction, and may file income tax returns in various U.S. states. UGA is not subject to income tax return examinations by major taxing authorities for years before 2014. The tax benefit recognized is measured as the largest amount of benefit that has a greater than fifty percent likelihood of being realized upon ultimate settlement. De-recognition of a tax benefit previously recognized results in UGA recording a tax liability that reduces net assets. However, UGA’s conclusions regarding this policy may be subject to review and adjustment at a later date based on factors including, but not limited to, on-going analysis of and changes to tax laws, regulations and interpretations thereof. UGA recognizes interest accrued related to unrecognized tax benefits and penalties related to unrecognized tax benefits in income tax fees payable, if assessed. No interest expense or penalties have been recognized as of and for the year ended December 31, 2017. Authorized Participants may purchase Creation Baskets or redeem Redemption Baskets only in blocks of 50,000 UGA receives or pays the proceeds from shares sold or redeemed within two business days after the trade date of the purchase or redemption. The amounts due from Authorized Participants are reflected in UGA’s statements of financial condition as receivable for shares sold, and amounts payable to Authorized Participants upon redemption are reflected as payable for shares redeemed. Authorized Participants pay UGA a transaction fee of $ 350 Profit or loss shall be allocated among the partners of UGA in proportion to the number of shares each partner holds as of the close of each month. USCF may revise, alter or otherwise modify this method of allocation as described in the LP Agreement. UGA’s per share NAV is calculated on each NYSE Arca trading day by taking the current market value of its total assets, subtracting any liabilities and dividing that amount by the total number of shares outstanding. UGA uses the closing price for the contracts on the relevant exchange on that day to determine the value of contracts held on such exchange. Net income (loss) per share is the difference between the per share NAV at the beginning of each period and at the end of each period. The weighted average number of shares outstanding was computed for purposes of disclosing net income (loss) per weighted average share. The weighted average shares are equal to the number of shares outstanding at the end of the period, adjusted proportionately for shares added and redeemed based on the amount of time the shares were outstanding during such period. There were no shares held by USCF at December 31, 2017. Offering costs incurred in connection with the registration of additional shares after the initial registration of shares are borne by UGA. These costs include registration fees paid to regulatory agencies and all legal, accounting, printing and other expenses associated with such offerings. These costs are accounted for as a deferred charge and thereafter amortized to expense over twelve months on a straight-line basis or a shorter period if warranted. Cash equivalents include money market funds and overnight deposits or time deposits with original maturity dates of six months or less. Certain amounts in the accompanying financial statements were reclassified to conform to the current presentation. The preparation of financial statements in conformity with U.S. GAAP requires USCF to make estimates and assumptions that affect the reported amount of assets and liabilities and disclosure of contingent assets and liabilities at the date of the financial statements, and the reported amounts of the revenue and expenses during the reporting period. Actual results may differ from those estimates and assumptions.

FEES PAID BY THE FUND AND RELAT

FEES PAID BY THE FUND AND RELATED PARTY TRANSACTIONS	12 Months Ended
	Dec. 31, 2017
Fees Paid and Related Party Transactions Disclosure [Abstract]
Fees Paid By The Fund And Related Party Transactions	NOTE 3 — FEES PAID BY THE FUND AND RELATED PARTY TRANSACTIONS USCF Management Fee Under the LP Agreement, USCF is responsible for investing the assets of UGA in accordance with the objectives and policies of UGA. In addition, USCF has arranged for one or more third parties to provide administrative, custody, accounting, transfer agency and other necessary services to UGA. For these services, UGA is contractually obligated to pay USCF a fee, which is paid monthly, equal to 0.60% per annum of average daily total net assets. Ongoing Registration Fees and Other Offering Expenses UGA pays all costs and expenses associated with the ongoing registration of its shares subsequent to the initial offering. These costs include registration or other fees paid to regulatory agencies in connection with the offer and sale of shares, and all legal, accounting, printing and other expenses associated with such offer and sale. For the years ended December 31, 2017, 2016 and 2015, UGA incurred $ 46,454 46,581 46,453 Independent Directors’ and Officers’ Expenses UGA is responsible for paying its portion of the directors’ and officers’ liability insurance for UGA and the Related Public Funds and the fees and expenses of the independent directors who also serve as audit committee members of UGA and the Related Public Funds. UGA shares the fees and expenses on a pro rata basis with each Related Public Fund, as described above, based on the relative assets of each Related Public Fund computed on a daily basis. These fees and expenses for the year ended December 31, 2017 were $ 536,375 8,185 582,050 10,319 569,303 10,840 Licensing Fees 0.015 9,033 11,052 12,365 Investor Tax Reporting Cost The fees and expenses associated with UGA’s audit expenses and tax accounting and reporting requirements are paid by UGA. These costs were approximately $ 170,000 178,000 164,000 Other Expenses and Fees and Expense Waivers In addition to the fees described above, UGA pays all brokerage fees and other expenses in connection with the operation of UGA, excluding costs and expenses paid by USCF as outlined in Note 4 – Contracts and Agreements 0.15 231,179 Note 4 – Contracts and Agreements

CONTRACTS AND AGREEMENTS

CONTRACTS AND AGREEMENTS	12 Months Ended
	Dec. 31, 2017
Contractors [Abstract]
Contracts and Agreements	NOTE 4 — CONTRACTS AND AGREEMENTS Marketing Agent Agreement UGA is party to a marketing agent agreement, dated as of February 15, 2008, as amended from time to time, with the Marketing Agent and USCF, whereby the Marketing Agent provides certain marketing services for UGA as outlined in the agreement. The fee of the Marketing Agent, which is borne by USCF, is equal to 0.06 3 0.04 3 10 The above fee does not include website construction and development, which are also borne by USCF. Brown Brothers Harriman & Co. Agreements UGA is also party to a custodian agreement, dated January 16, 2008, as amended from time to time, with Brown Brothers Harriman & Co. (“BBH&Co.”) and USCF, whereby BBH&Co. holds investments on behalf of UGA. USCF pays the fees of the custodian, which are determined by the parties from time to time. In addition, UGA is party to an administrative agency agreement, dated February 7, 2008, as amended from time to time, with USCF and BBH&Co., whereby BBH&Co. acts as the administrative agent, transfer agent and registrar for UGA. USCF also pays the fees of BBH&Co. for its services under such agreement and such fees are determined by the parties from time to time. Currently, USCF pays BBH&Co. for its services, in the foregoing capacities, a minimum amount of $ 75,000 20,000 0.06 500 0.0465 500 1 0.035 1 75,000 7 15 Brokerage and Futures Commission Merchant Agreements On October 8, 2013, UGA entered into a brokerage agreement with RBC Capital Markets, LLC (“RBC Capital” or “RBC”) to serve as UGA’s FCM effective October 10, 2013. The agreement with RBC requires it to provide services to UGA in connection with the purchase and sale of Futures Contracts and Other Gasoline-Related Investments that may be purchased and sold by or through RBC Capital for UGA’s account. In accordance with the agreement, RBC Capital charges UGA commissions of approximately $ 7 8 exchange, clearing and NFA fees for Futures Contracts and options on Futures Contracts. Such fees include those incurred when purchasing Futures Contracts and options on Futures Contracts when UGA issues shares as a result of a Creation Basket, as well as fees incurred when selling Futures Contracts and options on Futures Contracts when UGA redeems shares as a result of a Redemption Basket. Such fees are also incurred when Futures Contracts and options on Futures Contracts are purchased or redeemed for the purpose of rebalancing the portfolio. For the Year Ended For the Year Ended For the Year Ended Total commissions accrued to brokers $ 71,846 $ 101,289 $ 98,827 Total commissions as annualized percentage of average total net assets 0.12 % 0.14 % 0.12 % Commissions accrued as a result of rebalancing $ 67,782 $ 99,065 $ 95,097 Percentage of commissions accrued as a result of rebalancing 94.34 % 97.80 % 96.23 % Commissions accrued as a result of creation and redemption activity $ 4,064 $ 2,224 $ 3,730 Percentage of commissions accrued as a result of creation and redemption activity 5.66 % 2.20 % 3.77 % The decrease in total commissions accrued to brokers for the year ended December 31, 2017, compared to the year ended December 31, 2016, was due primarily to a lower number of futures contracts being held and traded. The increase in total commissions accrued to brokers for the year ended December 31, 2016, compared to the year ended December 31, 2015, was due primarily to higher number of futures contracts being held and traded. However, there can be no assurance that commission costs and portfolio turnover will not cause commission expenses to rise in future quarters. NYMEX Licensing Agreement

FINANCIAL INSTRUMENTS, OFF-BALA

FINANCIAL INSTRUMENTS, OFF-BALANCE SHEET RISKS AND CONTINGENCIES	12 Months Ended
	Dec. 31, 2017
Disclosure Of Fair Value Off Balance Sheet Risks [Abstract]
Financial Instruments, Off-Balance Sheet Risks and Contingencies	NOTE 5 — FINANCIAL INSTRUMENTS, OFF-BALANCE SHEET RISKS AND CONTINGENCIES UGA may engage in the trading of futures contracts, options on futures contracts, cleared swaps and OTC swaps (collectively, “derivatives”). UGA is exposed to both market risk, which is the risk arising from changes in the market value of the contracts, and credit risk, which is the risk of failure by another party to perform according to the terms of a contract. UGA may enter into futures contracts, options on futures contracts and cleared swaps to gain exposure to changes in the value of an underlying commodity. A futures contract obligates the seller to deliver (and the purchaser to accept) the future delivery of a specified quantity and type of a commodity at a specified time and place. Some futures contracts may call for physical delivery of the asset, while others are settled in cash. The contractual obligations of a buyer or seller may generally be satisfied by taking or making physical delivery of the underlying commodity or by making an offsetting sale or purchase of an identical futures contract on the same or linked exchange before the designated date of delivery. Cleared swaps are agreements that are eligible to be cleared by a clearinghouse, e.g., ICE Clear Europe, and provide the efficiencies and benefits that centralized clearing on an exchange offers to traders of futures contracts, including credit risk intermediation and the ability to offset positions initiated with different counterparties. The purchase and sale of futures contracts, options on futures contracts and cleared swaps require margin deposits with an FCM. Additional deposits may be necessary for any loss on contract value. The Commodity Exchange Act requires an FCM to segregate all customer transactions and assets from the FCM’s proprietary activities. Futures contracts, options on futures contracts and cleared swaps involve, to varying degrees, elements of market risk (specifically commodity price risk) and exposure to loss in excess of the amount of variation margin. The face or contract amounts reflect the extent of the total exposure UGA has in the particular classes of instruments. Additional risks associated with the use of futures contracts are an imperfect correlation between movements in the price of the futures contracts and the market value of the underlying securities and the possibility of an illiquid market for a futures contract. Buying and selling options on futures contracts exposes investors to the risks of purchasing or selling futures contracts. All of the futures contracts held by UGA through December 31, 2017 were exchange-traded. The risks associated with exchange-traded contracts are generally perceived to be less than those associated with OTC swaps since, in OTC swaps, a party must rely solely on the credit of its respective individual counterparties. However, in the future, if UGA were to enter into non-exchange traded contracts, it would be subject to the credit risk associated with counterparty non-performance. The credit risk from counterparty non-performance associated with such instruments is the net unrealized gain, if any, on the transaction. UGA has credit risk under its futures contracts since the sole counterparty to all domestic and foreign futures contracts is the clearinghouse for the exchange on which the relevant contracts are traded. In addition, UGA bears the risk of financial failure by the clearing broker. UGA’s cash and other property, such as Treasuries, deposited with an FCM are considered commingled with all other customer funds, subject to the FCM’s segregation requirements. In the event of an FCM’s insolvency, recovery may be limited to a pro rata share of segregated funds available. It is possible that the recovered amount could be less than the total of cash and other property deposited. The insolvency of an FCM could result in the complete loss of UGA’s assets posted with that FCM; however, the majority of UGA’s assets are held in investments in Treasuries, cash and/or cash equivalents with UGA’s custodian and would not be impacted by the insolvency of an FCM. The failure or insolvency of UGA’s custodian, however, could result in a substantial loss of UGA’s assets. USCF invests a portion of UGA’s cash in money market funds that seek to maintain a stable per share NAV. UGA is exposed to any risk of loss associated with an investment in such money market funds. As of December 31, 2017 and December 31, 2016, UGA held investments in money market funds in the amounts of $ 2,500,000 10,000,000 42,726,586 56,497,093 For derivatives, risks arise from changes in the market value of the contracts. Theoretically, UGA is exposed to market risk equal to the value of futures contracts purchased and unlimited liability on such contracts sold short. As both a buyer and a seller of options, UGA pays or receives a premium at the outset and then bears the risk of unfavorable changes in the price of the contract underlying the option. UGA’s policy is to continuously monitor its exposure to market and counterparty risk through the use of a variety of financial, position and credit exposure reporting controls and procedures. In addition, UGA has a policy of requiring review of the credit standing of each broker or counterparty with which it conducts business. The financial instruments held by UGA are reported in its statements of financial condition at market or fair value, or at carrying amounts that approximate fair value, because of their highly liquid nature and short-term maturity.

FINANCIAL HIGHLIGHTS

FINANCIAL HIGHLIGHTS	12 Months Ended
	Dec. 31, 2017
Supplemental Financial In Formation Disclosure [Abstract]
Financial Highlights	NOTE 6 — FINANCIAL HIGHLIGHTS Year ended Year ended Year ended Per Share Operating Performance: Net asset value, beginning of year $ 31.37 $ 29.30 $ 33.90 Total income (loss) 0.87 2.26 (4.34) Net expenses (0.21) (0.19) (0.26) Net increase (decrease) in net asset value 0.66 2.07 (4.60) Net asset value, end of year $ 32.03 $ 31.37 $ 29.30 Total Return 2.10 % 7.06 % (13.57) % Ratios to Average Net Assets Total income (loss) 1.14 % 7.70 % (10.39) % Management fees 0.60 % 0.60 % 0.60 % Total expenses excluding management fees 0.53 % 0.52 % 0.42 % Expenses waived (0.38) % (0.37) % (0.27) % Net expenses excluding management fees 0.15 % 0.15 % 0.15 % Net income (loss) 0.39 % 6.95 % (11.14) % Total returns are calculated based on the change in value during the period. An individual shareholder’s total return and ratio may vary from the above total returns and ratios based on the timing of contributions to and withdrawals from UGA.

QUARTERLY FINANCIAL DATA (Unaud

QUARTERLY FINANCIAL DATA (Unaudited)	12 Months Ended
	Dec. 31, 2017
Quarterly Financial Information Disclosure [Abstract]
Quarterly Financial Data	NOTE 7 - QUARTERLY FINANCIAL DATA (Unaudited) First Second Third Fourth Total Income (Loss) $ (9,231,624) $ (6,711,040) $ 9,848,326 $ 6,779,607 Total Expenses 197,728 160,495 165,568 159,011 Expense Waivers (78,647) (46,498) (44,880) (61,154) Net Expenses 119,081 113,997 120,688 97,857 Net Income (Loss) $ (9,350,705) $ (6,825,037) $ 9,727,638 $ 6,681,750 Net Income (Loss) per Share $ (4.11) $ (3.01) $ 4.06 $ 3.72 First Second Third Fourth Total Income (Loss) $ (7,980,384) $ 1,386,073 $ 4,354,411 $ 7,915,697 Total Expenses 199,926 217,778 207,751 197,053 Expense Waivers (66,555) (58,482) (75,044) (69,828) Net Expenses 133,371 159,296 132,707 127,225 Net Income (Loss) $ (8,113,755) $ 1,226,777 $ 4,221,704 $ 7,788,472 Net Income (Loss) per Share $ (3.65) $ 0.31 $ 1.77 $ 3.64

FAIR VALUE OF FINANCIAL INSTRUM

FAIR VALUE OF FINANCIAL INSTRUMENTS	12 Months Ended
	Dec. 31, 2017
Fair Value Disclosures [Abstract]
Fair Value of Financial Instruments	NOTE 8 — FAIR VALUE OF FINANCIAL INSTRUMENTS UGA values its investments in accordance with Accounting Standards Codification 820 – Fair Value Measurements and Disclosures (“ASC 820”). ASC 820 defines fair value, establishes a framework for measuring fair value in generally accepted accounting principles, and expands disclosures about fair value measurement. The changes to past practice resulting from the application of ASC 820 relate to the definition of fair value, the methods used to measure fair value, and the expanded disclosures about fair value measurement. ASC 820 establishes a fair value hierarchy that distinguishes between: (1) market participant assumptions developed based on market data obtained from sources independent of UGA (observable inputs) and (2) UGA’s own assumptions about market participant assumptions developed based on the best information available under the circumstances (unobservable inputs). The three levels defined by the ASC 820 hierarchy are as follows: Level I – Quoted prices (unadjusted) in active markets for identical Level II – Inputs other than quoted prices included within Level I that are observable for the asset or liability, either directly or indirectly. Level II assets include the following: quoted prices for similar Level III – Unobservable pricing input at the measurement date for the asset or liability. Unobservable inputs shall be used to measure fair value to the extent that observable inputs are not available. In some instances, the inputs used to measure fair value might fall within different levels of the fair value hierarchy. The level in the fair value hierarchy within which the fair value measurement in its entirety falls shall be determined based on the lowest input level that is significant to the fair value measurement in its entirety. At December 31, 2017 Total Level I Level II Level III Short-Term Investments $ 44,376,485 $ 44,376,485 $ — $ — Exchange-Traded Futures Contracts United States Contracts 3,298,768 3,298,768 — — During the year ended December 31, 2017, there were no transfers between Level I and Level II. At December 31, 2016 Total Level I Level II Level III Short-Term Investments $ 50,939,944 $ 50,939,944 $ — $ — Exchange-Traded Futures Contracts United States Contracts 3,980,138 3,980,138 — — During the year ended December 31, 2016, there were no transfers between Level I and Level II. Effective January 1, 2009, UGA adopted the provisions of Accounting Standards Codification 815 — Derivatives and Hedging, which require presentation of qualitative disclosures about objectives and strategies for using derivatives, quantitative disclosures about fair value amounts and gains and losses on derivatives. Derivatives not Statements of Financial Fair Value Fair Value Futures - Commodity Contracts Assets $ 3,298,768 $ 3,980,138 For the year ended For the year ended For the year ended Derivatives Location of Realized Change in Realized Change in Realized Change in Futures - Commodity Contracts Realized gain (loss) on closed positions $ 864,192 $ 1,965,852 $ (11,985,649) Change in unrealized gain (loss) on open positions $ (681,370) $ 3,452,912 $ 3,362,528

RECENT ACCOUNTING PRONOUNCEMENT

RECENT ACCOUNTING PRONOUNCEMENTS	12 Months Ended
	Dec. 31, 2017
Recent Accounting Pronouncements [Abstract]
Recent Accounting Pronouncements	NOTE 9 - RECENT ACCOUNTING PRONOUNCEMENTS In August 2015, the Financial Accounting Standards Board (“FASB”) issued Accounting Standard Update (“ASU”) 2015-14, Revenue from Contracts with Customers, modifying ASU 2014-09. The core principle of the guidance is that an entity should recognize revenue to depict the transfer of promised goods or services to customers in an amount that reflects the consideration to which the entity expects to be entitled in exchange for those goods or services. ASU 2015-14 is effective for fiscal years beginning on or after December 15, 2016, and interim periods within those annual periods. Early application is permitted. At this time, management does not believe there will be any impact to the Fund’s financial statements.

SUBSEQUENT EVENTS

SUBSEQUENT EVENTS	12 Months Ended
	Dec. 31, 2017
Subsequent Events [Abstract]
SUBSEQUENT EVENTS	NOTE 10 — SUBSEQUENT EVENTS UGA has performed an evaluation of subsequent events through the date the financial statements were issued. This evaluation did not result in any subsequent events that necessitated disclosures and/or adjustments.

SUMMARY OF SIGNIFICANT ACCOUN19

SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Policies)	12 Months Ended
	Dec. 31, 2017
Accounting Policies [Abstract]
Basis of Presentation	Basis of Presentation The financial statements have been prepared in conformity with accounting principles generally accepted in the United States of America ("U.S. GAAP") as detailed in the Financial Accounting Standards Board’s (“FASB”) Accounting Standards Codification. UGA is an investment company and follows the accounting and reporting guidance in FASB Topic 946.
Revenue Recognition	Revenue Recognition Commodity futures contracts, forward contracts, physical commodities and related options are recorded on the trade date. All such transactions are recorded on the identified cost basis and marked to market daily. Unrealized gains or losses on open contracts are reflected in the statements of financial condition and represent the difference between the original contract amount and the market value (as determined by exchange settlement prices for futures contracts and related options and cash dealer prices at a predetermined time for forward contracts, physical commodities, and their related options) as of the last business day of the year or as of the last date of the financial statements. Changes in the unrealized gains or losses between periods are reflected in the statements of operations. UGA earns income on funds held at the custodian or futures commission merchant (“FCM”) at prevailing market rates earned on such investments.
Brokerage Commissions	Brokerage Commissions Brokerage commissions on all open commodity futures contracts are accrued on a full-turn basis.
Income Taxes	Income Taxes UGA is not subject to federal income taxes; each partner reports his/her allocable share of income, gain, loss deductions or credits on his/her own income tax return. In accordance with U.S. GAAP, UGA is required to determine whether a tax position is more likely than not to be sustained upon examination by the applicable taxing authority, including resolution of any tax related appeals or litigation processes, based on the technical merits of the position. UGA files an income tax return in the U.S. federal jurisdiction, and may file income tax returns in various U.S. states. UGA is not subject to income tax return examinations by major taxing authorities for years before 2014. The tax benefit recognized is measured as the largest amount of benefit that has a greater than fifty percent likelihood of being realized upon ultimate settlement. De-recognition of a tax benefit previously recognized results in UGA recording a tax liability that reduces net assets. However, UGA’s conclusions regarding this policy may be subject to review and adjustment at a later date based on factors including, but not limited to, on-going analysis of and changes to tax laws, regulations and interpretations thereof. UGA recognizes interest accrued related to unrecognized tax benefits and penalties related to unrecognized tax benefits in income tax fees payable, if assessed. No interest expense or penalties have been recognized as of and for the year ended December 31, 2017.
Creations and Redemptions	Creations and Redemptions Authorized Participants may purchase Creation Baskets or redeem Redemption Baskets only in blocks of 50,000 UGA receives or pays the proceeds from shares sold or redeemed within two business days after the trade date of the purchase or redemption. The amounts due from Authorized Participants are reflected in UGA’s statements of financial condition as receivable for shares sold, and amounts payable to Authorized Participants upon redemption are reflected as payable for shares redeemed. Authorized Participants pay UGA a transaction fee of $ 350
Partnership Capital and Allocation of Partnership Income and Losses	Partnership Capital and Allocation of Partnership Income and Losses Profit or loss shall be allocated among the partners of UGA in proportion to the number of shares each partner holds as of the close of each month. USCF may revise, alter or otherwise modify this method of allocation as described in the LP Agreement.
Calculation of Per Share Net Asset Value (“NAV”)	Calculation of Per Share NAV UGA’s per share NAV is calculated on each NYSE Arca trading day by taking the current market value of its total assets, subtracting any liabilities and dividing that amount by the total number of shares outstanding. UGA uses the closing price for the contracts on the relevant exchange on that day to determine the value of contracts held on such exchange.
Net Income (Loss) Per Share	Net Income (Loss) Per Share Net income (loss) per share is the difference between the per share NAV at the beginning of each period and at the end of each period. The weighted average number of shares outstanding was computed for purposes of disclosing net income (loss) per weighted average share. The weighted average shares are equal to the number of shares outstanding at the end of the period, adjusted proportionately for shares added and redeemed based on the amount of time the shares were outstanding during such period. There were no shares held by USCF at December 31, 2017.
Offering Costs	Offering Costs Offering costs incurred in connection with the registration of additional shares after the initial registration of shares are borne by UGA. These costs include registration fees paid to regulatory agencies and all legal, accounting, printing and other expenses associated with such offerings. These costs are accounted for as a deferred charge and thereafter amortized to expense over twelve months on a straight-line basis or a shorter period if warranted.
Cash Equivalents	Cash Equivalents Cash equivalents include money market funds and overnight deposits or time deposits with original maturity dates of six months or less.
Reclassification	Reclassification Certain amounts in the accompanying financial statements were reclassified to conform to the current presentation.
Use of Estimates	Use of Estimates The preparation of financial statements in conformity with U.S. GAAP requires USCF to make estimates and assumptions that affect the reported amount of assets and liabilities and disclosure of contingent assets and liabilities at the date of the financial statements, and the reported amounts of the revenue and expenses during the reporting period. Actual results may differ from those estimates and assumptions.

CONTRACTS AND AGREEMENTS (Table

CONTRACTS AND AGREEMENTS (Tables)	12 Months Ended
	Dec. 31, 2017
Contractors [Abstract]
Brokerage Commissions	UGA also incurs commissions to brokers for the purchase and sale of Futures Contracts, Other Gasoline-Related Investments or short-term obligations of the United States of two years or less (“Treasuries”). For the Year Ended For the Year Ended For the Year Ended Total commissions accrued to brokers $ 71,846 $ 101,289 $ 98,827 Total commissions as annualized percentage of average total net assets 0.12 % 0.14 % 0.12 % Commissions accrued as a result of rebalancing $ 67,782 $ 99,065 $ 95,097 Percentage of commissions accrued as a result of rebalancing 94.34 % 97.80 % 96.23 % Commissions accrued as a result of creation and redemption activity $ 4,064 $ 2,224 $ 3,730 Percentage of commissions accrued as a result of creation and redemption activity 5.66 % 2.20 % 3.77 %

FINANCIAL HIGHLIGHTS (Tables)

FINANCIAL HIGHLIGHTS (Tables)	12 Months Ended
	Dec. 31, 2017
Supplemental Financial In Formation Disclosure [Abstract]
Per Unit Performance Data and Other Supplemental Financial Data	The following table presents per share performance data and other supplemental financial data for the years ended December 31, 2017, 2016 and 2015 for the shareholders. This information has been derived from information presented in the financial statements. Year ended Year ended Year ended Per Share Operating Performance: Net asset value, beginning of year $ 31.37 $ 29.30 $ 33.90 Total income (loss) 0.87 2.26 (4.34) Net expenses (0.21) (0.19) (0.26) Net increase (decrease) in net asset value 0.66 2.07 (4.60) Net asset value, end of year $ 32.03 $ 31.37 $ 29.30 Total Return 2.10 % 7.06 % (13.57) % Ratios to Average Net Assets Total income (loss) 1.14 % 7.70 % (10.39) % Management fees 0.60 % 0.60 % 0.60 % Total expenses excluding management fees 0.53 % 0.52 % 0.42 % Expenses waived (0.38) % (0.37) % (0.27) % Net expenses excluding management fees 0.15 % 0.15 % 0.15 % Net income (loss) 0.39 % 6.95 % (11.14) %

QUARTERLY FINANCIAL DATA (Una22

QUARTERLY FINANCIAL DATA (Unaudited) (Tables)	12 Months Ended
	Dec. 31, 2017
Quarterly Financial Information Disclosure [Abstract]
Schedule of Quarterly Financial Information	The following summarized (unaudited) quarterly financial information presents the results of operations and other data for three-month periods ended March 31, June 30, September 30 and December 31, 2017 and 2016. First Second Third Fourth Total Income (Loss) $ (9,231,624) $ (6,711,040) $ 9,848,326 $ 6,779,607 Total Expenses 197,728 160,495 165,568 159,011 Expense Waivers (78,647) (46,498) (44,880) (61,154) Net Expenses 119,081 113,997 120,688 97,857 Net Income (Loss) $ (9,350,705) $ (6,825,037) $ 9,727,638 $ 6,681,750 Net Income (Loss) per Share $ (4.11) $ (3.01) $ 4.06 $ 3.72 First Second Third Fourth Total Income (Loss) $ (7,980,384) $ 1,386,073 $ 4,354,411 $ 7,915,697 Total Expenses 199,926 217,778 207,751 197,053 Expense Waivers (66,555) (58,482) (75,044) (69,828) Net Expenses 133,371 159,296 132,707 127,225 Net Income (Loss) $ (8,113,755) $ 1,226,777 $ 4,221,704 $ 7,788,472 Net Income (Loss) per Share $ (3.65) $ 0.31 $ 1.77 $ 3.64

FAIR VALUE OF FINANCIAL INSTR23

FAIR VALUE OF FINANCIAL INSTRUMENTS (Tables)	12 Months Ended
	Dec. 31, 2017
Fair Value Disclosures [Abstract]
Valuation of Securities Using Fair Value Hierarchy	The following table summarizes the valuation of UGA’s securities at December 31, 2017 using the fair value hierarchy: At December 31, 2017 Total Level I Level II Level III Short-Term Investments $ 44,376,485 $ 44,376,485 $ — $ — Exchange-Traded Futures Contracts United States Contracts 3,298,768 3,298,768 — — The following table summarizes the valuation of UGA’s securities at December 31, 2016 using the fair value hierarchy: At December 31, 2016 Total Level I Level II Level III Short-Term Investments $ 50,939,944 $ 50,939,944 $ — $ — Exchange-Traded Futures Contracts United States Contracts 3,980,138 3,980,138 — —
Fair Value of Derivative Instruments	Fair Value of Derivative Instruments Derivatives not Statements of Financial Fair Value Fair Value Futures - Commodity Contracts Assets $ 3,298,768 $ 3,980,138
Effect of Derivative Instruments on Condensed Statements of Operations	The Effect of Derivative Instruments on the Statements of Operations For the year ended For the year ended For the year ended Derivatives Location of Realized Change in Realized Change in Realized Change in Futures - Commodity Contracts Realized gain (loss) on closed positions $ 864,192 $ 1,965,852 $ (11,985,649) Change in unrealized gain (loss) on open positions $ (681,370) $ 3,452,912 $ 3,362,528

ORGANIZATION AND BUSINESS - Add

ORGANIZATION AND BUSINESS - Additional Information (Detail)	1 Months Ended		12 Months Ended
	Feb. 26, 2008USD ($)$ / sharesshares	Nov. 30, 2007	Dec. 31, 2017$ / shares$ / Unit	Dec. 31, 2016$ / shares	Dec. 31, 2015$ / shares	Dec. 31, 2014$ / shares
Organization, Consolidation and Presentation of Financial Statements Disclosure [Line Items]
Fee paid by Authorized Purchasers for each order placed to create one or more Creation Baskets or to redeem one or more baskets | $ / Unit			350
Number of initially registered units on Form S-1 with the U.S. Securities and Exchange Commission		30,000,000
Net asset value per unit | $ / shares	$ 50		$ 32.03	$ 31.37	$ 29.30	$ 33.90
Number of units issued | shares	300,000
Value of units issued | $	$ 15,000,000
Number of registered units			80,000,000
Creation Baskets [Member]
Organization, Consolidation and Presentation of Financial Statements Disclosure [Line Items]
Number of units per basket			50,000
Open Futures Contracts, Long [Member] | United States Contracts [Member] | NYMEX RBOB Gasoline Futures RB November 2017 contracts, expiring October 2017*
Organization, Consolidation and Presentation of Financial Statements Disclosure [Line Items]
Number of contracts			637

SUMMARY OF SIGNIFICANT ACCOUN25

SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Additional Information (Detail)	12 Months Ended
	Dec. 31, 2017$ / Unit
Significant Accounting Policies [Line Items]
Fee paid by Authorized Purchasers for each order placed to create one or more Creation Baskets or to redeem one or more baskets	350
Creation Baskets [Member]
Significant Accounting Policies [Line Items]
Number of units per basket	50,000

FEES PAID BY THE FUND AND REL26

FEES PAID BY THE FUND AND RELATED PARTY TRANSACTIONS - Additional Information (Detail) - USD ($)	3 Months Ended								12 Months Ended
	Dec. 31, 2017	Sep. 30, 2017	Jun. 30, 2017	Mar. 31, 2017	Dec. 31, 2016	Sep. 30, 2016	Jun. 30, 2016	Mar. 31, 2016	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Fees Paid and Related Party Transactions [Line Items]
USCF Management Fee									UGA is contractually obligated to pay USCF a fee, which is paid monthly, equal to0.60%per annum of average daily total net assets.
Ongoing registration fees and other offering expenses									$ 46,454	$ 46,581	$ 46,453
Estimated directors fees and expenses									8,185	10,319	10,840
Licensing fee incurred									9,033	11,052	12,365
Estimated investor tax reporting cost									170,000	178,000	164,000
Expense Waivers	$ (61,154)	$ (44,880)	$ (46,498)	$ (78,647)	$ (69,828)	$ (75,044)	$ (58,482)	$ (66,555)	$ (231,179)	(269,909)	(224,565)
Maximum [Member]
Fees Paid and Related Party Transactions [Line Items]
Costs and expenses annual limit for reimbursement									0.15%
UGA and the Related Public Funds [Member]
Fees Paid and Related Party Transactions [Line Items]
Estimated directors fees and expenses									$ 536,375	582,050	569,303
United States Gas Fund Lp [Member]
Fees Paid and Related Party Transactions [Line Items]
Estimated directors fees and expenses									$ 8,185	$ 10,319	$ 10,840
Licensing Agreements [Member] | On and after October 20, 2011 [Member]
Fees Paid and Related Party Transactions [Line Items]
Costs and expenses annual limit for reimbursement									0.015%

CONTRACTS AND AGREEMENTS (Broke

CONTRACTS AND AGREEMENTS (Brokerage Commissions) (Detail) - USD ($)	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Long Duration Contracts Assumptions By Product And Guarantee [Line Items]
Total commissions accrued to brokers	$ 71,846	$ 101,289	$ 98,827
Total commissions as annualized percentage of average total net assets	0.12%	0.14%	0.12%
Commissions accrued as a result of rebalancing [Member]
Long Duration Contracts Assumptions By Product And Guarantee [Line Items]
Total commissions accrued to brokers	$ 67,782	$ 99,065	$ 95,097
Total commissions as annualized percentage of average total net assets	94.34%	97.80%	96.23%
Commissions accrued as a result of creation and redemption activity [Member]
Long Duration Contracts Assumptions By Product And Guarantee [Line Items]
Total commissions accrued to brokers	$ 4,064	$ 2,224	$ 3,730
Total commissions as annualized percentage of average total net assets	5.66%	2.20%	3.77%

CONTRACTS AND AGREEMENTS - Addi

CONTRACTS AND AGREEMENTS - Additional Information (Detail)	12 Months Ended
	Dec. 31, 2017USD ($)$ / unit
Long-Duration Contracts, Assumptions by Product and Guarantee [Line Items]
Annual transfer agency services fee	$ 20,000
Annual Minimum Amount Applicability Description	$ 75,000
Maximum [Member]
Long-Duration Contracts, Assumptions by Product and Guarantee [Line Items]
Transaction fees per transaction | $ / unit	15
Commissions per round-turn trade, including applicable exchange, clearing and NFA fees for Oil Futures Contracts and options on Oil Futures Contracts | $ / unit	8
Minimum [Member]
Long-Duration Contracts, Assumptions by Product and Guarantee [Line Items]
Annual Fee for custody, fund accounting and fund administration services	$ 75,000
Transaction fees per transaction | $ / unit	7
Commissions per round-turn trade, including applicable exchange, clearing and NFA fees for Oil Futures Contracts and options on Oil Futures Contracts | $ / unit	7
First $500 million of the Related Public Funds' combined net assets [Member]
Long-Duration Contracts, Assumptions by Product and Guarantee [Line Items]
Fee percentage	0.06%
Base amount for determining fee percentage	$ 500,000,000
Related Public Funds' combined net assets greater than $500 million but less than $1 billion [Member]
Long-Duration Contracts, Assumptions by Product and Guarantee [Line Items]
Fee percentage	0.0465%
Related Public Funds' combined net assets greater than $500 million but less than $1 billion [Member] | Maximum [Member]
Long-Duration Contracts, Assumptions by Product and Guarantee [Line Items]
Base amount for determining fee percentage	$ 1,000,000,000
Related Public Funds' combined net assets greater than $500 million but less than $1 billion [Member] | Minimum [Member]
Long-Duration Contracts, Assumptions by Product and Guarantee [Line Items]
Base amount for determining fee percentage	$ 500,000,000
Related Public Funds' combined net assets exceed $1 billion [Member]
Long-Duration Contracts, Assumptions by Product and Guarantee [Line Items]
Fee percentage	0.035%
Base amount for determining fee percentage	$ 1,000,000,000
Marketing Agent and Affliate of USCF [Member]
Long-Duration Contracts, Assumptions by Product and Guarantee [Line Items]
Maximum Aggregate Compensation Paid For Distribution Related Services Percentage	10.00%
Marketing Agreement [Member] | Assets up to $3 billion [Member]
Long-Duration Contracts, Assumptions by Product and Guarantee [Line Items]
Fee percentage	0.06%
Base amount for determining fee percentage	$ 3,000,000,000
Marketing Agreement [Member] | Assets in excess of $3 billion [Member]
Long-Duration Contracts, Assumptions by Product and Guarantee [Line Items]
Fee percentage	0.04%
Base amount for determining fee percentage	$ 3,000,000,000

FINANCIAL INSTRUMENTS, OFF-BA29

FINANCIAL INSTRUMENTS, OFF-BALANCE SHEET RISKS AND CONTINGENCIES - Additional Information (Detail) - USD ($)	Dec. 31, 2017	Dec. 31, 2016
Cash investments in money market funds	$ 2,500,000	$ 10,000,000
Deposits in domestic and foreign financial institutions	$ 42,726,586	$ 56,497,093

FINANCIAL HIGHLIGHTS (Per Share

FINANCIAL HIGHLIGHTS (Per Share Performance Data and Other Supplemental Financial Data) (Detail) - $ / shares	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Per Share Operating Performance:
Net asset value per share, beginning of year	$ 31.37	$ 29.30	$ 33.90
Total income (loss)	0.87	2.26	(4.34)
Net expenses	(0.21)	(0.19)	(0.26)
Net increase (decrease) in net asset value	0.66	2.07	(4.6)
Net asset value per share, end of year	$ 32.03	$ 31.37	$ 29.30
Total Return	2.10%	7.06%	(13.57%)
Ratios to Average Net Assets
Total income (loss)	1.14%	7.70%	(10.39%)
Management fees	0.60%	0.60%	0.60%
Total expenses excluding management fees	0.53%	0.52%	0.42%
Expenses waived	(0.38%)	(0.37%)	(0.27%)
Net expenses excluding management fees	0.15%	0.15%	0.15%
Net income (loss)	0.39%	6.95%	(11.14%)

QUARTERLY FINANCIAL DATA (Una31

QUARTERLY FINANCIAL DATA (Unaudited) Quarterly Financial Information) (Detail) - USD ($)	3 Months Ended								12 Months Ended
	Dec. 31, 2017	Sep. 30, 2017	Jun. 30, 2017	Mar. 31, 2017	Dec. 31, 2016	Sep. 30, 2016	Jun. 30, 2016	Mar. 31, 2016	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Total Income (Loss)	$ 6,779,607	$ 9,848,326	$ (6,711,040)	$ (9,231,624)	$ 7,915,697	$ 4,354,411	$ 1,386,073	$ (7,980,384)	$ 685,269	$ 5,675,797	$ (8,565,182)
Total Expenses	159,011	165,568	160,495	197,728	197,053	207,751	217,778	199,926	682,802	822,508	842,563
Expense Waivers	(61,154)	(44,880)	(46,498)	(78,647)	(69,828)	(75,044)	(58,482)	(66,555)	(231,179)	(269,909)	(224,565)
Net Expenses	97,857	120,688	113,997	119,081	127,225	132,707	159,296	133,371	451,623	552,599	617,998
Net Income (Loss)	$ 6,681,750	$ 9,727,638	$ (6,825,037)	$ (9,350,705)	$ 7,788,472	$ 4,221,704	$ 1,226,777	$ (8,113,755)	$ 233,646	$ 5,123,198	$ (9,183,180)
Net Income (Loss) per Share	$ 3.72	$ 4.06	$ (3.01)	$ (4.11)	$ 3.64	$ 1.77	$ 0.31	$ (3.65)	$ 0.66	$ 2.07	$ (4.6)

FAIR VALUE OF FINANCIAL INSTR32

FAIR VALUE OF FINANCIAL INSTRUMENTS (Valuation of Securities Using Fair Value Hierarchy) (Detail) - USD ($)	Dec. 31, 2017	Dec. 31, 2016
Short-Term Investments [Member]
Schedule of Trading Securities and Other Trading Assets [Line Items]
Securities, fair value	$ 44,376,485	$ 50,939,944
Exchange-Traded Futures Contracts [Member] | United States [Member]
Schedule of Trading Securities and Other Trading Assets [Line Items]
Securities, fair value	3,298,768	3,980,138
Fair Value, Inputs, Level 1 [Member] | Short-Term Investments [Member]
Schedule of Trading Securities and Other Trading Assets [Line Items]
Securities, fair value	44,376,485	50,939,944
Fair Value, Inputs, Level 1 [Member] | Exchange-Traded Futures Contracts [Member] | United States [Member]
Schedule of Trading Securities and Other Trading Assets [Line Items]
Securities, fair value	3,298,768	3,980,138
Fair Value, Inputs, Level 2 [Member] | Short-Term Investments [Member]
Schedule of Trading Securities and Other Trading Assets [Line Items]
Securities, fair value	0	0
Fair Value, Inputs, Level 2 [Member] | Exchange-Traded Futures Contracts [Member] | United States [Member]
Schedule of Trading Securities and Other Trading Assets [Line Items]
Securities, fair value	0	0
Fair Value, Inputs, Level 3 [Member] | Short-Term Investments [Member]
Schedule of Trading Securities and Other Trading Assets [Line Items]
Securities, fair value	0	0
Fair Value, Inputs, Level 3 [Member] | Exchange-Traded Futures Contracts [Member] | United States [Member]
Schedule of Trading Securities and Other Trading Assets [Line Items]
Securities, fair value	$ 0	$ 0

FAIR VALUE OF FINANCIAL INSTR33

FAIR VALUE OF FINANCIAL INSTRUMENTS (Fair Value of Derivative Instruments) (Detail) - USD ($)	Dec. 31, 2017	Dec. 31, 2016
Commodity Contracts [Member] | Assets [Member] | Futures [Member]
Derivatives, Fair Value [Line Items]
Derivatives not Accounted for as Hedging Instruments	$ 3,298,768	$ 3,980,138

FAIR VALUE OF FINANCIAL INSTR34

FAIR VALUE OF FINANCIAL INSTRUMENTS (Effect of Derivative Instruments on Condensed Statements of Operations) (Detail) - USD ($)	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Derivative Instruments, Gain (Loss) [Line Items]
Realized Gain (Loss) on Derivatives Recognized in Income	$ 864,192	$ 1,965,852	$ (11,985,649)
Change in Unrealized Gain (Loss) on Derivatives Recognized in Income	(681,370)	3,452,912	3,362,528
Commodity Contracts [Member] | Realized gain (loss) on closed positions [Member] | Futures [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Realized Gain (Loss) on Derivatives Recognized in Income	864,192	1,965,852	(11,985,649)
Commodity Contracts [Member] | Change in unrealized gain (loss) on open contracts [Member] | Futures [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Change in Unrealized Gain (Loss) on Derivatives Recognized in Income	$ (681,370)	$ 3,452,912	$ 3,362,528