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Taxes - Summary of Components of Income Tax Expense (Detail) - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2023
Dec. 31, 2022
Dec. 31, 2021
Major components of tax expense (income) [abstract]      
Income tax expense/(benefit) $ 653 $ 2,912 $ 957
Tax expense 1,551 2,599 1,254
Petroleum Resource Rent Tax [member]      
Major components of tax expense (income) [abstract]      
Current tax expense 367 501 0
Deferred tax (benefit)/expense 531 (814) 297
Income tax expense/(benefit) 898 (313) 297
Income Tax [member]      
Major components of tax expense (income) [abstract]      
Current tax expense 1,872 2,256 658
Deferred tax (benefit)/expense (1,255) 701 301
Current tax benefit 14 (276) (20)
Deferred tax expense/(benefit) 22 231 18
Income tax expense/(benefit) $ 653 $ 2,912 $ 957