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CONTRACTS AND AGREEMENTS (Details)		9 Months Ended
	Oct. 01, 2022	Sep. 30, 2022 USD ($) $ / item
Minimum
Long-Duration Contracts, Assumptions by Product and Guarantee
Flat fee		0.20%
Maximum
Long-Duration Contracts, Assumptions by Product and Guarantee
Flat fee		0.30%
Marketing Agreement
Long-Duration Contracts, Assumptions by Product and Guarantee
Marketing fee exclusive of the incentive fee		$ 425,000
Marketing Agreement | USO's assets from $0- $500 million
Long-Duration Contracts, Assumptions by Product and Guarantee
Fee percentage		0.00%
Marketing Agreement | USO's assets from $0- $500 million | Minimum
Long-Duration Contracts, Assumptions by Product and Guarantee
Base amount for determining fee percentage		$ 0
Marketing Agreement | USO's assets from $0- $500 million | Maximum
Long-Duration Contracts, Assumptions by Product and Guarantee
Base amount for determining fee percentage		$ 500,000,000
Marketing Agreement | USO's assets from $500 million - $4 billion
Long-Duration Contracts, Assumptions by Product and Guarantee
Fee percentage		0.04%
Marketing Agreement | USO's assets from $500 million - $4 billion | Minimum
Long-Duration Contracts, Assumptions by Product and Guarantee
Base amount for determining fee percentage		$ 500,000,000
Marketing Agreement | USO's assets from $500 million - $4 billion | Maximum
Long-Duration Contracts, Assumptions by Product and Guarantee
Base amount for determining fee percentage		$ 4,000,000,000
Marketing Agreement | USO's assets in excess of $4 billion
Long-Duration Contracts, Assumptions by Product and Guarantee
Fee percentage		0.03%
Ratio of expense to Average Net Assets		10.00%
Marketing Agreement | USO's assets in excess of $4 billion | Subsequent Event
Long-Duration Contracts, Assumptions by Product and Guarantee
Percentage of total net asset	0.025%
Marketing Agreement | USO's assets in excess of $4 billion | Minimum
Long-Duration Contracts, Assumptions by Product and Guarantee
Base amount for determining fee percentage		$ 4,000,000,000
Brokerage and Futures Commission Merchant Agreements | Minimum
Long-Duration Contracts, Assumptions by Product and Guarantee
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
Long-Duration Contracts, Assumptions by Product and Guarantee
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

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

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It represents the flat fees percentage.

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Ratio Of Expenses To Average Net Assets

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