Exploratory Well Costs - Schedule of Net Changes In Capitalized Exploratory Well Costs (Details) $ in Millions	3 Months Ended
	Mar. 31, 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	4
Reclassifications to Proved Properties	(5)
Costs charged to expense	0
Balance at March 31	14
Capitalized exploratory well costs that have been capitalized for a period of one year or less	13
Capitalized Exploratory Well Costs that Have Been Capitalized for Period Greater than One Year	$ 1	[1]
Number of exploratory wells that have been capitalized for a period greater than one year | well	1

[1] Consists of costs related to a project in the United States at March 31, 2023.