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Significant Production And Growth Asset Acquisitions - Summary of Assets Acquired and Liabilities Assumed (Detail) - USD ($)
$ in Millions
Dec. 31, 2022
Dec. 22, 2020
FAR Senegal RSSD SA [member]    
Disclosure of detailed information about assets acquisition assets acquired and liabilities assumed [line items]    
Oil and gas properties $ 205  
Exploration and evaluation 7  
Cash acquired 3  
Payables (13)  
Net other assets and liabilities assumed 10  
Total identifiable net assets at acquisition 212  
Capricorn Senegal Limited [member]    
Disclosure of detailed information about assets acquisition assets acquired and liabilities assumed [line items]    
Oil and gas properties 540  
Exploration and evaluation 26  
Cash acquired 5  
Payables (51)  
Net other assets and liabilities assumed 7  
Total identifiable net assets at acquisition $ 527 $ 527