Exploratory Well Costs - Schedule of Net Changes In Capitalized Exploratory Well Costs (Details) $ in Millions	9 Months Ended
	Sep. 30, 2023 USD ($) well
Capitalized Exploratory Well Costs that are Pending Determination of Proved Reserves [Roll Forward]
Balance at January 1	$ 15
Additions Pending the Determination of Proved Reserves	133
Reclassifications to Proved Properties	(35)
Costs charged to expense	(1)
Balance at September 30	112
Capitalized exploratory well costs that have been capitalized for a period of one year or less	109
Capitalized Exploratory Well Costs that Have Been Capitalized for Period Greater than One Year	3	[1]
Capitalized exploratory well costs	$ 112
Number of exploratory wells that have been capitalized for a period greater than one year | well	2

[1] Consists of costs related to projects in the United States at September 30, 2023.