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Impairment of Exploration and Evaluation and Oil and Gas Properties - Summary of Assuming all Other Variables are Held Constant (Parenthetical) (Detail) - Oil And Gs Properties [Member] - Goodwill [member] - $ / bbl	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022
Atlantis [member]
Disclosure In Tabular Form Of Analysis In Respect Of Input Changes So That Recoverable Value Equals To Carrying Value [Line Items]
Average sales price	3
Shenzi And Atlantis [Member]
Disclosure In Tabular Form Of Analysis In Respect Of Input Changes So That Recoverable Value Equals To Carrying Value [Line Items]
Average sales price		3

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- Definition

Sales price per unit of oil and gas produced.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Name Regulation S-K (SK)
-Number 229
-Section 1204
-Paragraph (b)
-Subparagraph (1)
-Publisher SEC

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- Definition

Disclosure in tabular form of analysis in respect of input changes so that recoverable value equals to carrying value.

+ References

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