Income Tax - Summary of Breakdown of Income Tax Liability (Parentheticals) (Detail) - USD ($) $ in Millions	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Break down of income tax liability [Line Items]
Tax liabilities	$ 126	$ 31	$ 27
Installments of the Regularization Regimes Associated with the Dispute Over the Cost Deduction for Hydrocarbon Well Abandonment [Member] \| Hydrocarbon Wells Abandonment Costs [member] \| Twelve Instalments [member]
Break down of income tax liability [Line Items]
Tax liabilities	1	1	6
Remaining Installments of the Regimes [Member] \| Hydrocarbon Wells Abandonment Costs [member]
Break down of income tax liability [Line Items]
Tax liabilities	$ 2	$ 4	$ 26

The amount of current tax for current and prior periods to the extent unpaid. Current tax is the amount of income taxes payable (recoverable) in respect of the taxable profit (tax loss) for a period.

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Name IAS
-Number 1
-IssueDate 2024-01-01
-Paragraph 54
-Subparagraph n
-URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2024-en-r&anchor=para_54_n&doctype=Standard
-URIDate 2024-03-27

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