Property, Plant and Equipment - Additional Information (Detail) $ in Millions	9 Months Ended
Sep. 30, 2024 USD ($) well	Dec. 31, 2023 USD ($)
Capitalized Exploratory Well Costs [Line Items]
Capitalized exploratory well costs	$ 990	$ 952
Well costs incurred and expensed	19
Capitalized exploratory well costs that have been capitalized for period greater than one year	$ 707
Stabroek Block, Offshore Guyana
Capitalized Exploratory Well Costs [Line Items]
Project interest percentage	30.00%
Suspended capitalized exploratory wells \| well	37
Capitalized exploratory well costs	$ 870
Capitalized well costs percentage	92.00%
JDA, Gulf of Thailand
Capitalized Exploratory Well Costs [Line Items]
Project interest percentage	50.00%
Capitalized exploratory wells suspended greater than one year that were expensed during the current period \| well	3
Block 42, Suriname
Capitalized Exploratory Well Costs [Line Items]
Project interest percentage	33.00%
Capitalized well costs percentage	6.00%
North Malay Basin, Offshore Peninsular Malaysia
Capitalized Exploratory Well Costs [Line Items]
Project interest percentage	50.00%
Capitalized well costs percentage	2.00%
Capitalized exploratory wells suspended greater than one year \| well	2

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Project interest percentage.

+ References

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- Definition

Amount of exploratory well cost capitalized after completion of drilling in oil- and gas-producing activities.

+ References

No definition available.

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Number of projects for exploratory well cost capitalized for period of greater than one year after completion of drilling in oil- and gas-producing activities and was expensed in the current period

+ References

No definition available.

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- Definition

Well costs incurred and expensed in the same year

+ References

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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

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 932
-SubTopic 360
-Name Accounting Standards Codification
-Section S50
-Paragraph 1
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147477385/932-360-S50-1

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Topic 932
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.4-10(c)(7)(ii)(B)(1))
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479664/932-10-S99-1

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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://www.xbrl.org/2003/role/disclosureRef
-Topic 932
-SubTopic 235
-Name Accounting Standards Codification
-Section 50
-Paragraph 1B
-Subparagraph (a)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147477215/932-235-50-1B

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Amount of exploratory well cost capitalized for period of greater than one year after completion of drilling in oil- and gas-producing activities.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 932
-SubTopic 235
-Name Accounting Standards Codification
-Section 50
-Paragraph 1B
-Subparagraph (b)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147477215/932-235-50-1B

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Number of projects for exploratory well cost capitalized for period of greater than one year after completion of drilling in oil- and gas-producing activities.

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