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Impairment (Details 5) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023
Assets With Impairment Losses [Member]
IfrsStatementLineItems [Line Items]
Carrying amount	$ 12,393	$ 7,568
Recoverable amount	11,572	8,324
Sensitivity	$ (821)	$ 756
CGU Marlim Sul [Member] | Assets With Impairment Losses [Member]
IfrsStatementLineItems [Line Items]
Business segment	E&P
Carrying amount	$ 4,825
Recoverable amount	4,760
Sensitivity	$ (65)
CGU Marlim Sul [Member] | Producing Properties Relating To Oil And Gas Activities Country Of Brazil [Member]
IfrsStatementLineItems [Line Items]
Business segment	E&P	E&P
Carrying amount	$ 6,656	$ 6,656
Recoverable amount	5,991	7,322
Sensitivity	$ (665)	$ 666
Itaborai Utilities [Member] | Assets With Impairment Losses [Member]
IfrsStatementLineItems [Line Items]
Business segment	G&LCE	G&LCE
Carrying amount	$ 900	$ 900
Recoverable amount	810	989
Sensitivity	$ (90)	$ 89
Araucaria Nitrogenados ANSA [Member] | Assets With Impairment Losses [Member]
IfrsStatementLineItems [Line Items]
Business segment	RT&M	RT&M
Carrying amount	$ 12	$ 12
Recoverable amount	11	13
Sensitivity	$ (1)	$ 1

X

- Definition

The description of the reportable segment to which an individual asset belongs. [Refer: Impairment loss]

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Name IAS
-Number 36
-IssueDate 2024-01-01
-Paragraph 130
-Subparagraph c
-Clause ii
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-URIDate 2024-03-27

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- Definition

The amount of assets related to the exploration, evaluation, development or production of oil and gas.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Name IAS
-Number 16
-IssueDate 2024-01-01
-Paragraph 37
-URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=16&code=ifrs-tx-2024-en-r&anchor=para_37&doctype=Standard
-URIDate 2024-03-27

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- Definition

The higher of an asset’s (or cash-generating unit’s) fair value less costs of disposal and its value in use. [Refer: Total for all cash-generating units [member]]

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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-Number 36
-IssueDate 2024-01-01
-Paragraph 130
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-URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=36&code=ifrs-tx-2024-en-r&anchor=para_130_e&doctype=Standard
-URIDate 2024-03-27

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