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Provisions - Additional Information (Detail) $ in Millions	12 Months Ended
	Dec. 31, 2024 USD ($)	Dec. 31, 2023
Later than ten years [member]
Disclosure Of Detailed Information About Provisions [Line Items]
Percentage of proportion of noncurrent provision yet to be settled	53.00%	55.00%
Provision for decommissioning, restoration and rehabilitation costs [member] | Discount rate, measurement input [member]
Disclosure Of Detailed Information About Provisions [Line Items]
Percentage decrease of pretax discount rates	0.50%
Increase (decrease) in fair value measurement due to reasonably possible decrease in unobservable input, liabilities	$ 336
Percentage of reasonably possible increase in unobservable input, liabilities	10.00%
Increase (decrease) in fair value measurement due to reasonably possible increase in unobservable input, liabilities	$ 653
Bottom of range [member] | Provision for decommissioning, restoration and rehabilitation costs [member] | Discount rate, measurement input [member]
Disclosure Of Detailed Information About Provisions [Line Items]
Discount rate pre tax	4	3.7
Top of range [member] | Provision for decommissioning, restoration and rehabilitation costs [member] | Discount rate, measurement input [member]
Disclosure Of Detailed Information About Provisions [Line Items]
Discount rate pre tax	4.9	5

X

- Definition

The amount of increase (decrease) in the fair value measurement of liabilities due to a reasonably possible decrease in an unobservable input.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Name IFRS
-Number 13
-IssueDate 2024-01-01
-Paragraph 93
-Subparagraph h
-Clause ii
-URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=13&code=ifrs-tx-2024-en-r&anchor=para_93_h_ii&doctype=Standard
-URIDate 2024-03-27

+ Details

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X

- Definition

The amount of increase (decrease) in the fair value measurement of liabilities due to a reasonably possible increase in an unobservable input.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Name IFRS
-Number 13
-IssueDate 2024-01-01
-Paragraph 93
-Subparagraph h
-Clause ii
-URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=13&code=ifrs-tx-2024-en-r&anchor=para_93_h_ii&doctype=Standard
-URIDate 2024-03-27

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X

- Definition

The percentage of a reasonably possible increase in an unobservable input used in fair value measurement of liabilities.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Name IFRS
-Number 13
-IssueDate 2024-01-01
-Paragraph 93
-Subparagraph h
-Clause ii
-URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=13&code=ifrs-tx-2024-en-r&anchor=para_93_h_ii&doctype=Standard
-URIDate 2024-03-27

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- Definition

Disclosure of detailed information about provisions.

+ References

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+ Details

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- Definition

Discount rate pre tax.

+ References

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+ Details

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X

- Definition

Percentage decrease of pretax discount rates.

+ References

No definition available.

+ Details

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X

- Definition

Percentage of proportion of non current provision yet to be settled.

+ References

No definition available.

+ Details

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- Details

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