Revenues and Segment Information, Components of Operating Income (Loss) (Details) $ in Millions		3 Months Ended
		Mar. 31, 2025 USD ($) segment	Mar. 31, 2024 USD ($)
Segment Information for our Reportable Segments
Revenues	[1]	$ 30,258	$ 31,759
Cost of sales:
Cost of materials and other	[2]	27,548	27,682
Operating expenses (excluding depreciation and amortization expense reflected below)		1,523	1,411
Depreciation and amortization expense		680	683
Total cost of sales		29,751	29,776
Asset impairment loss		1,131	0
Other operating expenses		4	34
General and administrative expenses (excluding depreciation and amortization expense reflected below)		261	258
Depreciation and amortization expense		11	12
Operating income (loss)		(900)	1,679
Other income, net		120	144
Interest and debt expense, net of capitalized interest		(137)	(140)
Income (loss) before income tax expense (benefit)		(917)	1,683
Total expenditures for long-lived assets	[3]	$ 659	661
Segment Information (Textual)
Number of reportable segments | segment		3
Corporate, Reconciling Items, and Eliminations [Member]
Segment Information for our Reportable Segments
Revenues		$ (626)	(901)
Cost of sales:
Operating income (loss)		(249)	(266)
Corporate [Member]
Segment Information for our Reportable Segments
Revenues		0	0
Cost of sales:
Asset impairment loss		0
General and administrative expenses (excluding depreciation and amortization expense reflected below)		261	258
Depreciation and amortization expense		11	12
Total expenditures for long-lived assets	[3]	23	16
Intersegment Eliminations [Member]
Segment Information for our Reportable Segments
Revenues		(626)	(901)
Cost of sales:
Cost of materials and other	[2]	(648)	(904)
Operating expenses (excluding depreciation and amortization expense reflected below)		0	0
Depreciation and amortization expense		(1)	(1)
Total cost of sales		(649)	(905)
Other operating expenses		0	0
Refining [Member]
Segment Information for our Reportable Segments
Revenues		28,757	30,143
Refining [Member] | Operating Segments [Member]
Segment Information for our Reportable Segments
Revenues		28,759	30,145
Cost of sales:
Cost of materials and other	[2]	26,269	26,611
Operating expenses (excluding depreciation and amortization expense reflected below)		1,291	1,184
Depreciation and amortization expense		594	600
Total cost of sales		28,154	28,395
Asset impairment loss		1,131
Other operating expenses		4	5
General and administrative expenses (excluding depreciation and amortization expense reflected below)		0	0
Depreciation and amortization expense		0	0
Operating income (loss)		(530)	1,745
Total expenditures for long-lived assets	[3]	533	561
Refining [Member] | Intersegment Eliminations [Member]
Segment Information for our Reportable Segments
Revenues		2	2
Renewable Diesel [Member]
Segment Information for our Reportable Segments
Revenues		493	702
Renewable Diesel [Member] | Operating Segments [Member]
Segment Information for our Reportable Segments
Revenues		900	1,411
Cost of sales:
Cost of materials and other	[2]	895	1,066
Operating expenses (excluding depreciation and amortization expense reflected below)		78	90
Depreciation and amortization expense		68	65
Total cost of sales		1,041	1,221
Asset impairment loss		0
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)		(141)	190
Total expenditures for long-lived assets	[3]	95	78
Segment Information (Textual)
Clean fuel production credit		51
Blender's tax credit			331
Renewable Diesel [Member] | Intersegment Eliminations [Member]
Segment Information for our Reportable Segments
Revenues		407	709
Ethanol [Member]
Segment Information for our Reportable Segments
Revenues		1,008	914
Ethanol [Member] | Operating Segments [Member]
Segment Information for our Reportable Segments
Revenues		1,225	1,104
Cost of sales:
Cost of materials and other	[2]	1,032	909
Operating expenses (excluding depreciation and amortization expense reflected below)		154	137
Depreciation and amortization expense		19	19
Total cost of sales		1,205	1,065
Asset impairment loss		0
Other operating expenses		0	29
General and administrative expenses (excluding depreciation and amortization expense reflected below)		0	0
Depreciation and amortization expense		0	0
Operating income (loss)		20	10
Total expenditures for long-lived assets	[3]	8	6
Ethanol [Member] | Intersegment Eliminations [Member]
Segment Information for our Reportable Segments
Revenues		$ 217	$ 190

[1] Includes excise taxes on sales by certain of our foreign operations of $1,504 million and $1,387 million for the three months ended March 31, 2025 and 2024, respectively.

[2] Cost of materials and other for our Renewable Diesel segment is net of the clean fuel production credit on qualifying sales of certain low-carbon transportation fuels of $51 million for the three months ended March 31, 2025 and the blender’s tax credit on qualified fuel mixtures of $331 million for the three months ended March 31, 2024.

[3] Total expenditures for long-lived assets includes amounts related to capital expenditures and deferred turnaround and catalyst costs.