Property, Plant and Equipment - Net Changes in Capitalized Exploratory Well Costs (Detail) $ in Millions	9 Months Ended
	Sep. 30, 2024 USD ($)
Property, Plant and Equipment [Abstract]
Beginning balance	$ 952
Additions to capitalized exploratory well costs pending the determination of proved reserves	203
Reclassifications to wells, facilities and equipment based on the determination of proved reserves	117
Capitalized exploratory well costs charged to expense	48
Ending balance	$ 990