Revenues and Segment Information, Activity (Details) $ in Millions		12 Months Ended
		Dec. 31, 2023 USD ($) segment	Dec. 31, 2022 USD ($)	Dec. 31, 2021 USD ($)
Segment Information for our Reportable Segments
Revenues	[1]	$ 144,766	$ 176,383	$ 113,977
Cost of sales:
Cost of materials and other	[2]	123,087	150,770	102,714
Operating expenses (excluding depreciation and amortization expense reflected below)		6,089	6,389	5,776
Depreciation and amortization expense		2,658	2,428	2,358
Total cost of sales		131,834	159,587	110,848
Asset impairment loss		0	61	0
Other operating expenses		33	66	87
General and administrative expenses (excluding depreciation and amortization expense reflected below)		998	934	865
Depreciation and amortization expense		43	45	47
Operating income		11,858	15,690	2,130
Other income, net		502	179	16
Interest and debt expense, net of capitalized interest		(592)	(562)	(603)
Income before income tax expense		11,768	15,307	1,543
Total expenditures for long-lived assets	[3]	$ 1,916	2,737	2,458
Segment Information (Textual)
Number of reportable segments | segment		3
Corporate, Reconciling Items, and Eliminations[Member]
Segment Information for our Reportable Segments
Revenues		$ (4,272)	(2,814)	(915)
Cost of sales:
Operating income		(1,058)	(997)	(914)
Corporate [Member]
Segment Information for our Reportable Segments
Revenues		0	0	0
Cost of sales:
General and administrative expenses (excluding depreciation and amortization expense reflected below)		998	934	865
Depreciation and amortization expense		43	45	47
Total expenditures for long-lived assets	[3]	91	73	17
Intersegment Eliminations [Member]
Segment Information for our Reportable Segments
Revenues		(4,272)	(2,814)	(915)
Cost of sales:
Cost of materials and other	[2]	(4,259)	(2,796)	(911)
Operating expenses (excluding depreciation and amortization expense reflected below)		8	0	(2)
Depreciation and amortization expense		(4)	0	0
Total cost of sales		(4,255)	(2,796)	(913)
Asset impairment loss			0
Other operating expenses		0	0	0
Refining [Member]
Segment Information for our Reportable Segments
Revenues		136,470	168,154	106,947
Refining [Member] | Operating Segments [Member]
Segment Information for our Reportable Segments
Revenues		136,488	168,210	106,961
Cost of sales:
Cost of materials and other	[2]	117,401	144,588	97,759
Operating expenses (excluding depreciation and amortization expense reflected below)		5,208	5,509	5,088
Depreciation and amortization expense		2,351	2,247	2,169
Total cost of sales		124,960	152,344	105,016
Asset impairment loss			0
Other operating expenses		17	63	83
General and administrative expenses (excluding depreciation and amortization expense reflected below)		0	0	0
Depreciation and amortization expense		0	0	0
Operating income		11,511	15,803	1,862
Total expenditures for long-lived assets	[3]	1,488	1,763	1,374
Refining [Member] | Intersegment Eliminations [Member]
Segment Information for our Reportable Segments
Revenues		18	56	14
Renewable Diesel [Member]
Segment Information for our Reportable Segments
Revenues		3,823	3,483	1,874
Renewable Diesel [Member] | Operating Segments [Member]
Segment Information for our Reportable Segments
Revenues		6,991	5,501	2,342
Cost of sales:
Cost of materials and other	[2]	5,550	4,350	1,438
Operating expenses (excluding depreciation and amortization expense reflected below)		358	255	134
Depreciation and amortization expense		231	122	58
Total cost of sales		6,139	4,727	1,630
Asset impairment loss			0
Other operating expenses		0	0	3
General and administrative expenses (excluding depreciation and amortization expense reflected below)		0	0	0
Depreciation and amortization expense		0	0	0
Operating income		852	774	709
Total expenditures for long-lived assets	[3]	294	879	1,049
Segment Information (Textual)
Blender's tax credit		1,200	761	371
Renewable Diesel [Member] | Intersegment Eliminations [Member]
Segment Information for our Reportable Segments
Revenues		3,168	2,018	468
Ethanol [Member]
Segment Information for our Reportable Segments
Revenues		4,473	4,746	5,156
Ethanol [Member] | Operating Segments [Member]
Segment Information for our Reportable Segments
Revenues		5,559	5,486	5,589
Cost of sales:
Cost of materials and other	[2]	4,395	4,628	4,428
Operating expenses (excluding depreciation and amortization expense reflected below)		515	625	556
Depreciation and amortization expense		80	59	131
Total cost of sales		4,990	5,312	5,115
Asset impairment loss			61
Other operating expenses		16	3	1
General and administrative expenses (excluding depreciation and amortization expense reflected below)		0	0	0
Depreciation and amortization expense		0	0	0
Operating income		553	110	473
Total expenditures for long-lived assets	[3]	43	22	18
Ethanol [Member] | Intersegment Eliminations [Member]
Segment Information for our Reportable Segments
Revenues		$ 1,086	$ 740	$ 433

[1] Includes excise taxes on sales by certain of our foreign operations of $5,765 million, $5,194 million, and $5,645 million for the years ended December 31, 2023, 2022, and 2021.

[2] Cost of materials and other for our Renewable Diesel segment is net of the blender’s tax credit on qualified fuel mixtures of $1.2 billion, $761 million, and $371 million for the years ended December 31, 2023, 2022, and 2021, respectively.

[3] Total expenditures for long-lived assets includes amounts related to capital expenditures; deferred turnaround and catalyst costs; and property, plant, and equipment for acquisitions.