Income Tax - Summary of Calculation of Income Tax Expense Accrued (Detail) - USD ($) $ in Millions	12 Months Ended
Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Calculation of the Income Tax Expense Accrued [Abstract]
Current income tax	$ (31)	$ (18)	$ (15)
Deferred income tax	(810)	(681)	(247)
Income tax expense	(841)	(699)	(262)
Income tax – Well abandonment	19	0	78
Income tax (expense)/ benefit	$ (822)	$ (699)	$ (184)

The amount of tax expense (income) relating to changes in deferred tax liabilities and deferred tax assets. [Refer: Deferred tax assets; Deferred tax liabilities]

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Name IAS
-Number 12
-IssueDate 2022-03-24
-Paragraph 81
-Subparagraph g
-Clause ii
-URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=12&code=ifrs-tx-2022-en-r&anchor=para_81_g_ii&doctype=Standard
-URIDate 2022-03-24

Name:	ifrs-full_DeferredTaxExpenseIncome
Namespace Prefix:	ifrs-full_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration