Revenues and Segment Information, Components of Operating Income (Loss) (Details) $ in Millions		3 Months Ended
		Mar. 31, 2022 USD ($) segment	Mar. 31, 2021 USD ($)
Segment Information for our Reportable Segments
Revenues	[1]	$ 38,542	$ 20,806
Cost of sales:
Cost of materials and other	[2]	34,949	18,992
Operating expenses (excluding depreciation and amortization expense reflected below)		1,379	1,656
Depreciation and amortization expense		595	566
Total cost of sales		36,923	21,214
Other operating expenses		19	38
General and administrative expenses (excluding depreciation and amortization expense reflected below)		205	208
Depreciation and amortization expense		11	12
Operating income (loss)		$ 1,384	(666)
Segment Information (Textual)
Number of reportable segments | segment		3
Corporate, Reconciling Items And Eliminations [Member]
Segment Information for our Reportable Segments
Revenues		$ (517)	(142)
Cost of sales:
Operating income (loss)		(217)	(221)
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)		205	208
Depreciation and amortization expense		11	12
Intersegment Eliminations [Member]
Segment Information for our Reportable Segments
Revenues		(517)	(142)
Cost of sales:
Cost of materials and other	[2]	(516)	(141)
Operating expenses (excluding depreciation and amortization expense reflected below)		0	0
Depreciation and amortization expense		0	0
Total cost of sales		(516)	(141)
Other operating expenses		0	0
Refining [Member]
Segment Information for our Reportable Segments
Revenues		36,813	19,469
Refining [Member] | Operating Segments [Member]
Segment Information for our Reportable Segments
Revenues		36,817	19,472
Cost of sales:
Cost of materials and other	[2]	33,606	18,022
Operating expenses (excluding depreciation and amortization expense reflected below)		1,193	1,471
Depreciation and amortization expense		549	533
Total cost of sales		35,348	20,026
Other operating expenses		18	38
General and administrative expenses (excluding depreciation and amortization expense reflected below)		0	0
Depreciation and amortization expense		0	0
Operating income (loss)		1,451	(592)
Refining [Member] | Intersegment Eliminations [Member]
Segment Information for our Reportable Segments
Revenues		4	3
Renewable Diesel [Member]
Segment Information for our Reportable Segments
Revenues		595	352
Renewable Diesel [Member] | Operating Segments [Member]
Segment Information for our Reportable Segments
Revenues		981	431
Cost of sales:
Cost of materials and other	[2]	755	187
Operating expenses (excluding depreciation and amortization expense reflected below)		51	29
Depreciation and amortization expense		26	12
Total cost of sales		832	228
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 (loss)		149	203
Segment Information (Textual)
Blender's tax credit		156	79
Renewable Diesel [Member] | Intersegment Eliminations [Member]
Segment Information for our Reportable Segments
Revenues		386	79
Ethanol [Member]
Segment Information for our Reportable Segments
Revenues		1,134	985
Ethanol [Member] | Operating Segments [Member]
Segment Information for our Reportable Segments
Revenues		1,261	1,045
Cost of sales:
Cost of materials and other	[2]	1,104	924
Operating expenses (excluding depreciation and amortization expense reflected below)		135	156
Depreciation and amortization expense		20	21
Total cost of sales		1,259	1,101
Other operating expenses		1	0
General and administrative expenses (excluding depreciation and amortization expense reflected below)		0	0
Depreciation and amortization expense		0	0
Operating income (loss)		1	(56)
Ethanol [Member] | Intersegment Eliminations [Member]
Segment Information for our Reportable Segments
Revenues		$ 127	$ 60

[1] Includes excise taxes on sales by certain of our foreign operations of $1,423 million and $1,120 million for the three months ended March 31, 2022 and 2021, 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 $156 million and $79 million for the three months ended March 31, 2022 and 2021, respectively.