Property, Plant and Equipment - Additional Information (Detail) $ in Millions	6 Months Ended
Jun. 30, 2023 USD ($) well	Dec. 31, 2022 USD ($)
Capitalized Exploratory Well Costs [Line Items]
Capitalized exploratory well costs	$ 930	$ 886
Well costs incurred and expensed	87
Capitalized exploratory well costs that have been capitalized for period greater than one year	$ 653
Stabroek Block, Offshore Guyana
Capitalized Exploratory Well Costs [Line Items]
Project interest percentage	30.00%
Exploration and appraisal wells \| well	32
Capitalized exploratory well costs	$ 738
Capitalized well costs percentage	85.00%
Mississippi Canyon Block, Gulf of Mexico
Capitalized Exploratory Well Costs [Line Items]
Project interest percentage	100.00%
Green Canyon Block, Gulf of Mexico
Capitalized Exploratory Well Costs [Line Items]
Project interest percentage	40.00%
Capitalized well costs percentage	8.00%
JDA, Gulf of Thailand
Capitalized Exploratory Well Costs [Line Items]
Project interest percentage	50.00%
Capitalized well costs percentage	6.00%
Number of successful exploration wells drilled \| well	3
North Malay Basin, Offshore Peninsular Malaysia
Capitalized Exploratory Well Costs [Line Items]
Project interest percentage	5000.00%
Capitalized well costs percentage	1.00%
Number of successful exploration wells drilled \| well	1

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Project interest percentage.

+ References

No definition available.

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- Definition

Well costs incurred and expensed in the same year

+ References

No definition available.

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- Definition

Number of exploratory oil and gas wells capable of producing either oil or gas in sufficient quantity to justify completion as oil or gas well.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Name Regulation S-K (SK)
-Number 229
-Section 1205
-Paragraph (a)
-Subparagraph (1)
-Publisher SEC

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Number of oil and gas wells temporarily suspended.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Name Regulation S-K (SK)
-Number 229
-Section 1206
-Paragraph (a)
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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

The amount of capitalized exploratory well costs that is pending the determination of proved reserves. This does not include amounts that were capitalized and subsequently expensed in the same annual period.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Name Accounting Standards Codification
-Topic 932
-SubTopic 235
-Section 50
-Paragraph 1B
-Subparagraph (a)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147482274/932-235-50-1B

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- Definition

The amount of exploratory well costs that have been capitalized for a period of greater than one year after the completion of drilling.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Name Accounting Standards Codification
-Topic 932
-SubTopic 235
-Section 50
-Paragraph 1B
-Subparagraph b
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147482274/932-235-50-1B

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