Property, Plant and Equipment (Details) - USD ($) $ in Millions	Mar. 31, 2022	Dec. 31, 2021
Property, Plant and Equipment [Line Items]
Property, plant and equipment, net	$ 14,422	$ 14,499
Exploratory well costs capitalized greater than one year after completion of drilling	53	80
Operating Segments | United States
Property, Plant and Equipment [Line Items]
Property, plant and equipment, net	14,038	14,097
Operating Segments | International
Property, Plant and Equipment [Line Items]
Property, plant and equipment, net	330	347
Corporate
Property, Plant and Equipment [Line Items]
Property, plant and equipment, net	$ 54	$ 55