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Taxes - Summary of Effective Income Tax Rate (Parenthetical) (Detail) - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2024
Dec. 31, 2023
Dec. 31, 2022
Disclosure Of Effective Income Tax Rate [Line Items]      
Percentage Of Excluding Tax Benefit Arising From The Sale 15.10%    
Amount of Tax Benefit $ 94    
Income Tax [Member]      
Disclosure Of Effective Income Tax Rate [Line Items]      
Adjustment of deferred tax of prior periods 55 $ 22 $ 231
Pluto PRRT Deferred Tax Asset [Member]      
Disclosure Of Effective Income Tax Rate [Line Items]      
Adjustment of deferred tax of prior periods $ 502 $ 637  
Scarborough Project [Member]      
Disclosure Of Effective Income Tax Rate [Line Items]      
Percentage Of Sale Of Share 15.10%    
Global [member] | Income Tax [Member]      
Disclosure Of Effective Income Tax Rate [Line Items]      
Effective income tax reconciliation percentage 26.90% 30.20% 30.00%
Australia [member] | Income Tax [Member]      
Disclosure Of Effective Income Tax Rate [Line Items]      
Effective income tax reconciliation percentage 18.30% 27.50% 30.70%
Top of range [member] | Global [member] | Income Tax [Member]      
Disclosure Of Effective Income Tax Rate [Line Items]      
Effective income tax reconciliation percentage 28.80%    
Top of range [member] | Australia [member] | Income Tax [Member]      
Disclosure Of Effective Income Tax Rate [Line Items]      
Effective income tax reconciliation percentage 31.70%    
Sangomar [member]      
Disclosure Of Effective Income Tax Rate [Line Items]      
Net deferred tax assets $ 342