Impairments - Schedule of Impairments (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Impaired Long-Lived Assets Held and Used [Line Items]
Impairments	$ 1,498	$ 4,252	$ 861
Corporate and Other
Impaired Long-Lived Assets Held and Used [Line Items]
Impairments	0	25	0
Midstream | Operating Segments
Impaired Long-Lived Assets Held and Used [Line Items]
Impairments	209	1,464	858
Refining | Operating Segments
Impaired Long-Lived Assets Held and Used [Line Items]
Impairments	1,288	2,763	3
Marketing and Specialties | Operating Segments
Impaired Long-Lived Assets Held and Used [Line Items]
Impairments	$ 1	$ 0	$ 0