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Taxes - Summary of Reconciliation of Effective and Applicable Income Tax Expenses (Detail) - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2024
Dec. 31, 2023
Dec. 31, 2022
Disclosure Of Reconciliation Of Effective And Applicable Income Tax Expenses [Line Items]      
Profit before tax $ 4,369 $ 3,273 $ 9,174
PRRT benefit/(expense) (91) 898 (313)
Tax (benefit)/expense 814 653 2,912
Income Tax [Member]      
Disclosure Of Reconciliation Of Effective And Applicable Income Tax Expenses [Line Items]      
Profit before tax 4,369 3,273 9,174
PRRT benefit/(expense) 91 (898) 313
Effect of tax rate differentials (75) 91 (141)
Profit before income tax 4,460 2,375 9,487
Income tax expense 1,338 712 2,847
Effect of deferred tax assets not recognised 76 155 150
Effect of tax losses and credits previously unrecognised (442) (332) 0
Effect of goodwill impairment 0 109 0
Reduction in deferred tax liability due to held for sale basis (94) (78) 0
Foreign exchange impact on tax expense/(benefit) 87 (58) (44)
Adjustment to prior years (122) 36 (45)
Integration and transaction costs non-deductible 0 4 142
Other 46 14 3
Tax (benefit)/expense 814 653 2,912
Petroleum Resource Rent Tax [member]      
Disclosure Of Reconciliation Of Effective And Applicable Income Tax Expenses [Line Items]      
Profit before tax 4,369 3,273 9,174
Non-PRRT assessable profit (2,631) (1,780) (6,197)
PRRT projects profit before tax 1,738 1,493 2,977
Income tax expense 695 598 1,191
(Recognition)/derecognition of Pluto general expenditure (502) 611 (1,362)
Recognition of transferred exploration spend 0 (18) 0
Augmentation (266) (292) (175)
Other (18) (1) 33
Tax (benefit)/expense $ (91) $ 898 $ (313)