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Condensed Statements of Cash Flows (Unaudited) - USD ($)		9 Months Ended
		Sep. 30, 2022	Sep. 30, 2021
Cash Flows from Operating Activities:
Net income (loss)		$ 627,810,614	$ 1,510,372,989
Adjustments to reconcile net income (loss) to net cash provided by (used in) operating activities:
Change in unrealized (gain) loss on open commodity futures contracts		332,240,105	73,910,705
Change in unrealized (gain) loss on open swap contracts		1,940	0
(Increase) decrease in dividends receivable		(1,984,292)	(30,850)
(Increase) decrease in interest receivable		(1,481,919)	100,639
(Increase) decrease in prepaid insurance*	[1]	(157,872)	(270,588)
(Increase) decrease in prepaid registration fees		0	1,260,041
(Increase) decrease in ETF transaction fees receivable		0	2,000
Increase (decrease) in payable due to Broker		35,838,431	68,083,278
Increase (decrease) in General Partner management fees payable		(163,831)	(440,244)
Increase (decrease) in professional fees payable		(1,556,249)	184,002
Increase (decrease) in brokerage commissions payable		(91,372)	(85,947)
Increase (decrease) in directors' fees payable*	[1]	(2,599)	(5,617)
Increase (decrease) in license fees payable		(21,335)	(35,430)
Net cash provided by (used in) operating activities		990,431,621	1,653,044,978
Cash Flows from Financing Activities:
Addition of partnership shares		2,452,643,781	664,230,493
Redemption of partnership shares		(3,505,170,083)	(3,220,487,860)
Net cash provided by (used in) financing activities		(1,052,526,302)	(2,556,257,367)
Net Increase (Decrease) in Cash and Cash Equivalents		(62,094,681)	(903,212,389)
Total Cash, Cash Equivalents and Equity in Trading Accounts, beginning of period		2,264,418,396	3,309,238,139
Total Cash, Cash Equivalents and Equity in Trading Accounts, end of period		2,202,323,715	2,406,025,750
Components of Cash and Cash Equivalents:
Cash and cash equivalents		963,555,399	1,769,454,915
Equity in Trading Accounts:
Cash and cash equivalents		1,238,768,316	636,570,835
Total Cash, Cash Equivalents and Equity in Trading Accounts		$ 2,202,323,715	$ 2,406,025,750
[1] Certain prior year amounts have been reclassified for consistency with the current presentation.

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-URI https://asc.fasb.org/extlink&oid=126954810&loc=d3e3602-108585

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- Definition

Represents the amount of cash and cash equivalent in equity in trading accounts.

+ References

No definition available.

+ Details

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Namespace Prefix:	uso_
Data Type:	xbrli:monetaryItemType
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- Definition

Amount Relating to equity in trading accounts.

+ References

No definition available.

+ Details

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Data Type:	xbrli:monetaryItemType
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- Definition

Amount of change in unrealized gain (loss) on open swap contracts.

+ References

No definition available.

+ Details

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Namespace Prefix:	uso_
Data Type:	xbrli:monetaryItemType
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- References

No definition available.

+ Details

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Data Type:	xbrli:stringItemType
Balance Type:	na
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- Definition

The amount of information pertaining to increase (decrease) in directors fees payable of an entity during the period.

+ References

No definition available.

+ Details

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Namespace Prefix:	uso_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
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- Definition

Increase (Decrease) in License Fees Payable

+ References

No definition available.

+ Details

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Namespace Prefix:	uso_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
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- Definition

It represents the increase and decrease in other income of a business entity.

+ References

No definition available.

+ Details

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Namespace Prefix:	uso_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

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- Definition

The change during the period, either increase or decrease, in amounts payable due to broker.

+ References

No definition available.

+ Details

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Namespace Prefix:	uso_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
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- Definition

Increase decrease in prepaid insurance

+ References

No definition available.

+ Details

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Namespace Prefix:	uso_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
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- Definition

Increase (Decrease) In Professional Fees Payable

+ References

No definition available.

+ Details

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Namespace Prefix:	uso_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
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- Definition

Net change in management fee payable.

+ References

No definition available.

+ Details

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Namespace Prefix:	uso_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

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- Definition

Payments To Partnership Redemption.

+ References

No definition available.

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Data Type:	xbrli:monetaryItemType
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