Segment Disclosures and Related Information - Analysis by Segment (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Segment Reporting Information [Line Items]
Sales and Other Operating Revenues	$ 169,990	$ 111,476	$ 64,129
Equity in Earnings (Losses) of Affiliates	2,968	2,904	1,191
Consolidated depreciation, amortization and impairments	1,689	3,103	5,647
Interest income	82	11	14
Interest and debt expense	619	581	499
Income (Loss) Before Income Taxes	14,639	1,740	(4,964)
Investments In and Advances To Affiliates	14,425	13,439	13,327
Total Assets	76,442	55,594	54,721
Capital expenditures and investments	2,194	1,860	2,920
Midstream
Segment Reporting Information [Line Items]
Sales and Other Operating Revenues	16,189	8,813	4,174
Consolidated depreciation, amortization and impairments	569	634	1,778
Chemicals
Segment Reporting Information [Line Items]
Consolidated depreciation, amortization and impairments	0	0	0
Refining
Segment Reporting Information [Line Items]
Sales and Other Operating Revenues	41,598	28,974	18,030
Consolidated depreciation, amortization and impairments	879	2,272	3,659
Marketing and Specialties
Segment Reporting Information [Line Items]
Sales and Other Operating Revenues	112,169	73,654	41,892
Consolidated depreciation, amortization and impairments	110	114	103
Operating Segments | Midstream
Segment Reporting Information [Line Items]
Sales and Other Operating Revenues	19,121	11,714	5,855
Equity in Earnings (Losses) of Affiliates	916	877	761
Income (Loss) Before Income Taxes	4,734	1,500	(116)
Investments In and Advances To Affiliates	4,271	3,978	4,255
Total Assets	30,273	15,546	15,196
Capital expenditures and investments	1,043	733	1,735
Operating Segments | Chemicals
Segment Reporting Information [Line Items]
Sales and Other Operating Revenues	0	3	3
Equity in Earnings (Losses) of Affiliates	842	1,832	625
Income (Loss) Before Income Taxes	856	1,844	635
Investments In and Advances To Affiliates	6,785	6,369	6,126
Total Assets	6,785	6,453	6,183
Capital expenditures and investments	0	0	0
Operating Segments | Refining
Segment Reporting Information [Line Items]
Sales and Other Operating Revenues	112,725	75,096	42,181
Equity in Earnings (Losses) of Affiliates	747	(184)	(376)
Income (Loss) Before Income Taxes	7,816	(2,353)	(6,023)
Investments In and Advances To Affiliates	2,484	2,340	2,202
Total Assets	21,581	20,338	20,804
Capital expenditures and investments	928	784	828
Operating Segments | Marketing and Specialties
Segment Reporting Information [Line Items]
Sales and Other Operating Revenues	115,622	75,583	43,130
Equity in Earnings (Losses) of Affiliates	463	379	181
Income (Loss) Before Income Taxes	2,402	1,723	1,421
Investments In and Advances To Affiliates	883	750	744
Total Assets	9,939	8,505	7,180
Capital expenditures and investments	89	202	173
Intersegment eliminations | Midstream
Segment Reporting Information [Line Items]
Sales and Other Operating Revenues	(2,932)	(2,901)	(1,681)
Intersegment eliminations | Refining
Segment Reporting Information [Line Items]
Sales and Other Operating Revenues	(71,127)	(46,122)	(24,151)
Intersegment eliminations | Marketing and Specialties
Segment Reporting Information [Line Items]
Sales and Other Operating Revenues	(3,453)	(1,929)	(1,238)
Corporate and Other
Segment Reporting Information [Line Items]
Sales and Other Operating Revenues	34	32	30
Equity in Earnings (Losses) of Affiliates	0	0	0
Consolidated depreciation, amortization and impairments	131	83	107
Interest income	82	11	14
Interest and debt expense	619	581	499
Income (Loss) Before Income Taxes	(1,169)	(974)	(881)
Investments In and Advances To Affiliates	2	2	0
Total Assets	7,864	4,752	5,358
Capital expenditures and investments	$ 134	$ 141	$ 184