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Additional Information - Summary of Oil and Gas Property Acquistion Exploration And Development Activities (Detail) - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2022
Dec. 31, 2021
Dec. 31, 2020
Oil And Gas Property Acquistion Exploration And Development Activities Costs Incurred [Line Items]      
Acquisitions of proved property $ 19,586 $ 205 $ 540
Acquisitions of unproved property 180 7 26
Exploration 580 543 396
Development 4,105 2,076 1,243
Total costs 24,451 2,831 2,205
Australia [member]      
Oil And Gas Property Acquistion Exploration And Development Activities Costs Incurred [Line Items]      
Acquisitions of proved property 8,488    
Acquisitions of unproved property 0    
Exploration 39 459 279
Development 2,365 1,141 987
Total costs 10,892 1,600 1,266
International [member]      
Oil And Gas Property Acquistion Exploration And Development Activities Costs Incurred [Line Items]      
Acquisitions of proved property 11,098 205 540
Acquisitions of unproved property 180 7 26
Exploration 541 84 117
Development 1,740 935 256
Total costs $ 13,559 $ 1,231 $ 939