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Taxes - Summary of Reconciliation of Effective and Applicable Income Tax Expenses (Detail) - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2023
Dec. 31, 2022
Dec. 31, 2021
Disclosure Of Reconciliation Of Effective And Applicable Income Tax Expenses [Line Items]      
Profit before tax $ 3,273 $ 9,174 $ 3,290
PRRT benefit/(expense) 898 (313) 297
Tax expense/(benefit) 653 2,912 957
Income Tax [Member]      
Disclosure Of Reconciliation Of Effective And Applicable Income Tax Expenses [Line Items]      
Profit before tax 3,273 9,174 3,290
PRRT benefit/(expense) (898) 313 (297)
Profit/(loss) before income tax 2,375 9,487 2,993
Effect of tax rate differentials 91 (141) (42)
Income tax expense/(benefit) calculated at 30% 712 2,847 898
Effect of deferred tax assets not recognised 155 150 114
Effect of tax losses and credits previously unrecognised (332) 0 0
Effect of goodwill impairment 109 0 0
Reduction in deferred tax liability due to held for sale basis (78) 0 0
Foreign exchange impact on tax (benefit)/expense (58) (44) (18)
Adjustment to prior years 36 (45) (2)
Integration and transaction costs non-deductible 4 142 0
Other 14 3 7
Tax expense/(benefit) 653 2,912 957
Petroleum Resource Rent Tax [member]      
Disclosure Of Reconciliation Of Effective And Applicable Income Tax Expenses [Line Items]      
Profit before tax 3,273 9,174 3,290
Non-PRRT assessable profit (1,780) (6,197) (2,134)
PRRT projects profit before tax 1,493 2,977 1,156
Income tax expense/(benefit) calculated at 30% 598 1,191 462
Derecognition/(recognition) of Pluto general expenditure 611 (1,362) 0
Recognition of transferred exploration spend (18) 0 0
Augmentation (292) (175) (166)
Other (1) 33 1
Tax expense/(benefit) $ 898 $ (313) $ 297