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Statements of Cash Flows (Unaudited) - USD ($)		3 Months Ended
		Mar. 31, 2025	Mar. 31, 2024
Cash Flows from Operating Activities:
Net income (loss)	[1]	$ 40,302,537	$ 240,295,171
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		(9,782,240)	(53,425,880)
Change in unrealized (gain) loss on open swap contracts		(6,017,769)	182
(Increase) decrease in dividends receivable		728,150	11,260
(Increase) decrease in interest receivable		247,299	516,734
(Increase) decrease in due from Broker		8,476,056
(Increase) decrease in prepaid insurance		(210,697)	(170,729)
(Increase) decrease in ETF transaction fees receivable		(2,000)	(2,000)
Increase (decrease) payable due to custody		(318,003)
Increase (decrease) in payable due to Broker		(7,835,007)	(16,865,582)
Increase (decrease) in General Partner management fees payable		(86,426)	(55,052)
Increase (decrease) in professional fees payable		(382,862)	(686,840)
Increase (decrease) in directors' fees payable		(868)	577
Increase (decrease) in license fees payable		(9,660)	(7,049)
Net cash provided by (used in) operating activities		25,108,510	169,610,792
Cash Flows from Financing Activities:
Addition of partnership shares		1,929,165,792	2,377,990,041
Redemption of partnership shares		(1,958,624,699)	(2,742,557,740)
Net cash provided by (used in) financing activities		(29,458,907)	(364,567,699)
Net Increase (Decrease) in Cash and Cash Equivalents		(4,350,397)	(194,956,907)
Total Cash, Cash Equivalents and Equity in Trading Accounts, beginning of period		1,007,709,886	1,463,696,515
Total Cash, Cash Equivalents and Equity in Trading Accounts, end of period		1,003,359,489	1,268,739,608
Components of Cash, Cash Equivalents and Equity in Trading Accounts:
Cash and cash equivalents		782,996,681	909,064,898
Equity in Trading Accounts:
Cash and cash equivalents		220,362,808	359,674,710
Total Cash, Cash Equivalents and Equity in Trading Accounts		$ 1,003,359,489	$ 1,268,739,608
[1] General Partners’ shares outstanding and capital for the periods presented were zero.

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No definition available.

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Name:	uso_EquityInTradingAccountsAbstract
Namespace Prefix:	uso_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

X

- Definition

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

+ References

No definition available.

+ Details

Name:	uso_IncreaseDecreaseInDirectorsFeesPayable
Namespace Prefix:	uso_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

X

- Definition

The amount of increase (decrease) in license fees payable.

+ References

No definition available.

+ Details

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

X

- Definition

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

+ References

No definition available.

+ Details

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

X

- Definition

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

+ References

No definition available.

+ Details

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

X

- Definition

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

+ References

No definition available.

+ Details

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

X

- Definition

The (increase) decrease in prepaid insurance.

+ References

No definition available.

+ Details

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

X

- Definition

The amount of increase (decrease) in professional fees payable.

+ References

No definition available.

+ Details

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

X

- Definition

The increase (decrease) during the reporting period in the amount receivable due from broker.

+ References

No definition available.

+ Details

Name:	uso_IncreaseDecreaseInReceivableDueFromBroker
Namespace Prefix:	uso_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

X

- Definition

Net change in management fee payable.

+ References

No definition available.

+ Details

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

X

- Definition

The amount of payments to partnership redemption.

+ References

No definition available.

+ Details

Name:	uso_PaymentsToPartnershipRedemption
Namespace Prefix:	uso_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration