Revenues and Segment Information, Components of Operating Income (Loss) (Details) $ in Millions		3 Months Ended
		Mar. 31, 2023 USD ($) segment	Mar. 31, 2022 USD ($)
Segment Information for our Reportable Segments
Revenues	[1]	$ 36,439	$ 38,542
Cost of sales:
Cost of materials and other	[2]	30,005	34,949
Operating expenses (excluding depreciation and amortization expense reflected below)		1,477	1,379
Depreciation and amortization expense		650	595
Total cost of sales		32,132	36,923
Other operating expenses		10	19
General and administrative expenses (excluding depreciation and amortization expense reflected below)		244	205
Depreciation and amortization expense		10	11
Operating income		$ 4,043	1,384
Segment Information (Textual)
Number of reportable segments | segment		3
Corporate, Reconciling Items And Eliminations [Member]
Segment Information for our Reportable Segments
Revenues		$ (971)	(517)
Cost of sales:
Operating income		(258)	(217)
Corporate [Member]
Segment Information for our Reportable Segments
Revenues		0	0
Cost of sales:
General and administrative expenses (excluding depreciation and amortization expense reflected below)		244	205
Depreciation and amortization expense		10	11
Intersegment Eliminations [Member]
Segment Information for our Reportable Segments
Revenues		(971)	(517)
Cost of sales:
Cost of materials and other	[2]	(967)	(516)
Operating expenses (excluding depreciation and amortization expense reflected below)		0	0
Depreciation and amortization expense		0	0
Total cost of sales		(967)	(516)
Other operating expenses		0	0
Refining [Member]
Segment Information for our Reportable Segments
Revenues		34,407	36,813
Refining [Member] | Operating Segments [Member]
Segment Information for our Reportable Segments
Revenues		34,410	36,817
Cost of sales:
Cost of materials and other	[2]	28,510	33,606
Operating expenses (excluding depreciation and amortization expense reflected below)		1,261	1,193
Depreciation and amortization expense		572	549
Total cost of sales		30,343	35,348
Other operating expenses		10	18
General and administrative expenses (excluding depreciation and amortization expense reflected below)		0	0
Depreciation and amortization expense		0	0
Operating income		4,057	1,451
Refining [Member] | Intersegment Eliminations [Member]
Segment Information for our Reportable Segments
Revenues		3	4
Renewable Diesel [Member]
Segment Information for our Reportable Segments
Revenues		935	595
Renewable Diesel [Member] | Operating Segments [Member]
Segment Information for our Reportable Segments
Revenues		1,680	981
Cost of sales:
Cost of materials and other	[2]	1,331	755
Operating expenses (excluding depreciation and amortization expense reflected below)		86	51
Depreciation and amortization expense		58	26
Total cost of sales		1,475	832
Other operating expenses		0	0
General and administrative expenses (excluding depreciation and amortization expense reflected below)		0	0
Depreciation and amortization expense		0	0
Operating income		205	149
Segment Information (Textual)
Blender's tax credit		246	156
Renewable Diesel [Member] | Intersegment Eliminations [Member]
Segment Information for our Reportable Segments
Revenues		745	386
Ethanol [Member]
Segment Information for our Reportable Segments
Revenues		1,097	1,134
Ethanol [Member] | Operating Segments [Member]
Segment Information for our Reportable Segments
Revenues		1,320	1,261
Cost of sales:
Cost of materials and other	[2]	1,131	1,104
Operating expenses (excluding depreciation and amortization expense reflected below)		130	135
Depreciation and amortization expense		20	20
Total cost of sales		1,281	1,259
Other operating expenses		0	1
General and administrative expenses (excluding depreciation and amortization expense reflected below)		0	0
Depreciation and amortization expense		0	0
Operating income		39	1
Ethanol [Member] | Intersegment Eliminations [Member]
Segment Information for our Reportable Segments
Revenues		$ 223	$ 127

[1] Includes excise taxes on sales by certain of our foreign operations of $1,422 million and $1,423 million for the three months ended March 31, 2023 and 2022, respectively.

[2] Cost of materials and other for our Renewable Diesel segment is net of the blender’s tax credit on qualified fuel mixtures of $246 million and $156 million for the three months ended March 31, 2023 and 2022, respectively.