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Taxes - Summary of Reconciliation of Effective and Applicable Income Tax Expenses (Detail) - USD ($) $ in Millions | 6 Months Ended
--- | ---
Jun. 30, 2024 | Jun. 30, 2023
Disclosure Of Reconciliation Of Effective And Applicable Income Tax Expenses [Line Items] |  |
Profit before tax | $ 2,310 | $ 2,828
PRRT expense | 192 | 778
Income tax expense | 146 | 284
Income Tax [Member] |  |
Disclosure Of Reconciliation Of Effective And Applicable Income Tax Expenses [Line Items] |  |
Reduction in deferred tax liability due to held for sale basis | (91) | 0
Profit before tax | 2,310 | 2,828
PRRT expense | (192) | (778)
Profit before income tax | 2,118 | 2,050
Income tax expense calculated at 30% | 635 | 615
Effect of tax rate differentials | (15) | 30
Effect of deferred tax assets not recognised | 35 | 67
Effect of tax benefits previously unrecognised | (366) | (340)
Foreign exchange impact on tax benefit | (11) | (83)
Adjustment to prior years | (52) | (16)
Other | 11 | 11
Income tax expense | $ 146 | $ 284

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