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CONTRACTS AND AGREEMENTS (Details)		12 Months Ended
	Oct. 01, 2022	Dec. 31, 2022 USD ($) $ / item
Minimum
CONTRACTS AND AGREEMENTS
Flat fee		0.20%
Maximum
CONTRACTS AND AGREEMENTS
Flat fee		0.30%
Marketing Agreement
CONTRACTS AND AGREEMENTS
Marketing fee exclusive of the incentive fee		$ 425,000
Marketing Agreement | USOF's assets from $0- $500 million
CONTRACTS AND AGREEMENTS
Fee percentage		0.00%
Marketing Agreement | USOF's assets from $0- $500 million | Minimum
CONTRACTS AND AGREEMENTS
Base amount for determining fee percentage		$ 0
Marketing Agreement | USOF's assets from $0- $500 million | Maximum
CONTRACTS AND AGREEMENTS
Base amount for determining fee percentage		$ 500,000,000
Marketing Agreement | USOF's assets from $500 million - $4 billion
CONTRACTS AND AGREEMENTS
Fee percentage		0.04%
Marketing Agreement | USOF's assets from $500 million - $4 billion | Minimum
CONTRACTS AND AGREEMENTS
Base amount for determining fee percentage		$ 500,000,000
Marketing Agreement | USOF's assets from $500 million - $4 billion | Maximum
CONTRACTS AND AGREEMENTS
Base amount for determining fee percentage		$ 4,000,000,000
Marketing Agreement | USOF's assets in excess of $4 billion
CONTRACTS AND AGREEMENTS
Fee percentage		0.03%
Percentage of total net asset	0.025%
Ratio of expense to average net assets		10.00%
Marketing Agreement | USOF's assets in excess of $4 billion | Minimum
CONTRACTS AND AGREEMENTS
Base amount for determining fee percentage		$ 4,000,000,000
Brokerage and Futures Commission Merchant Agreements | Minimum
CONTRACTS AND AGREEMENTS
Commissions per round-turn trade, including applicable exchange and NFA fees for oil futures contracts and options on oil futures contracts | $ / item		7
Brokerage and Futures Commission Merchant Agreements | Maximum
CONTRACTS AND AGREEMENTS
Commissions per round-turn trade, including applicable exchange and NFA fees for oil futures contracts and options on oil futures contracts | $ / item		8

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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

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- Definition

Expenditures for planning and executing the conception, pricing, promotion, and distribution of ideas, goods, and services. Costs of public relations and corporate promotions are typically considered to be marketing costs.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 220
-SubTopic 10
-Section S99
-Paragraph 2
-Subparagraph (SX 210.5-03.4)
-URI https://asc.fasb.org/extlink&oid=126953954&loc=SL114868664-224227

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- Definition

Represents the base fee percentage.

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Represents basis amount for fee percentage.

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- Definition

Represents the commissions per round-turn trade, including applicable exchange and NFA fees for oil futures contracts and options on oil futures contracts.

+ References

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- Definition

It represents the flat fees percentage.

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Represents the total net asset percentage.

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Ratio Of Expenses To Average Net Assets

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