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Taxes - Summary of Reconciliation of Deferred Tax Income Statement (Detail) - USD ($) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2022 | Dec. 31, 2021 | Dec. 31, 2020
Disclosure Of Reconciliation Of Deferred tax income statement [Line Items] |  |  |
Deferred tax expense/(benefit) | $ 118 | $ 616 | $ (1,756)
Petroleum Resource Rent Tax [member] |  |  |
Disclosure Of Reconciliation Of Deferred tax income statement [Line Items] |  |  |
Deferred tax expense/(benefit) | (814) | 297 | (439)
Petroleum Resource Rent Tax [member] | Production and growth assets [member] |  |  |
Disclosure Of Reconciliation Of Deferred tax income statement [Line Items] |  |  |
Deferred tax expense/(benefit) | (710) | 455 | (242)
Petroleum Resource Rent Tax [member] | Augmentation for current year [member] |  |  |
Disclosure Of Reconciliation Of Deferred tax income statement [Line Items] |  |  |
Deferred tax expense/(benefit) | (175) | (166) | (138)
Petroleum Resource Rent Tax [member] | Provisions [member] |  |  |
Disclosure Of Reconciliation Of Deferred tax income statement [Line Items] |  |  |
Deferred tax expense/(benefit) | (12) | (29) | (32)
Petroleum Resource Rent Tax [member] | Other [member] |  |  |
Disclosure Of Reconciliation Of Deferred tax income statement [Line Items] |  |  |
Deferred tax expense/(benefit) | 83 | 37 | (27)
Income Tax [member] |  |  |
Disclosure Of Reconciliation Of Deferred tax income statement [Line Items] |  |  |
Deferred tax expense/(benefit) | 932 | 319 | (1,317)
Income Tax [member] | Oil and gas properties [member] |  |  |
Disclosure Of Reconciliation Of Deferred tax income statement [Line Items] |  |  |
Deferred tax expense/(benefit) | 292 | 674 | (981)
Income Tax [member] | Exploration and evaluation assets [member] |  |  |
Disclosure Of Reconciliation Of Deferred tax income statement [Line Items] |  |  |
Deferred tax expense/(benefit) | 14 | (204) | (210)
Income Tax [member] | Lease assets and liabilities [member] |  |  |
Disclosure Of Reconciliation Of Deferred tax income statement [Line Items] |  |  |
Deferred tax expense/(benefit) | 25 | 1 | (16)
Income Tax [member] | Provisions [member] |  |  |
Disclosure Of Reconciliation Of Deferred tax income statement [Line Items] |  |  |
Deferred tax expense/(benefit) | 151 | (10) | (106)
Income Tax [member] | PRRT assets and liabilities [Member] |  |  |
Disclosure Of Reconciliation Of Deferred tax income statement [Line Items] |  |  |
Deferred tax expense/(benefit) | 236 | (88) | 134
Income Tax [member] | Unused tax losses and tax credits [member] |  |  |
Disclosure Of Reconciliation Of Deferred tax income statement [Line Items] |  |  |
Deferred tax expense/(benefit) | 19 | 149 | (149)
Income Tax [member] | Assets held for sale [Member] |  |  |
Disclosure Of Reconciliation Of Deferred tax income statement [Line Items] |  |  |
Deferred tax expense/(benefit) | 205 | (205) |
Income Tax [member] | Derivatives [member] |  |  |
Disclosure Of Reconciliation Of Deferred tax income statement [Line Items] |  |  |
Deferred tax expense/(benefit) | 21 | (11) | 16
Income Tax [member] | Other [member] |  |  |
Disclosure Of Reconciliation Of Deferred tax income statement [Line Items] |  |  |
Deferred tax expense/(benefit) | $ (31) | $ 13 | $ (5)

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- Definition The amount of tax expense or income relating to changes in deferred tax liabilities and deferred tax assets, recognised in profit or loss. [Refer: Deferred tax assets; Deferred tax expense (income); Deferred tax liabilities] + References 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 + Details
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