Revenues and Segment Information, Components of Operating Income (Loss) (Details) $ in Millions		3 Months Ended		6 Months Ended
		Jun. 30, 2023 USD ($)	Jun. 30, 2022 USD ($)	Jun. 30, 2023 USD ($) segment	Jun. 30, 2022 USD ($)
Segment Information for our Reportable Segments
Revenues	[1]	$ 34,509	$ 51,641	$ 70,948	$ 90,183
Cost of sales:
Cost of materials and other	[2]	29,430	42,946	59,435	77,895
Operating expenses (excluding depreciation and amortization expense reflected below)		1,440	1,626	2,917	3,005
Depreciation and amortization expense		658	590	1,308	1,185
Total cost of sales		31,528	45,162	63,660	82,085
Other operating expenses		2	15	12	34
General and administrative expenses (excluding depreciation and amortization expense reflected below)		209	233	453	438
Depreciation and amortization expense		11	12	21	23
Operating income		2,759	6,219	$ 6,802	7,603
Segment Information (Textual)
Number of reportable segments | segment				3
Corporate, Reconciling Items And Eliminations [Member]
Segment Information for our Reportable Segments
Revenues		(1,204)	(808)	$ (2,175)	(1,325)
Cost of sales:
Operating income		(240)	(246)	(498)	(463)
Corporate [Member]
Segment Information for our Reportable Segments
Revenues		0	0	0	0
Cost of sales:
General and administrative expenses (excluding depreciation and amortization expense reflected below)		209	233	453	438
Depreciation and amortization expense		11	12	21	23
Intersegment Eliminations [Member]
Segment Information for our Reportable Segments
Revenues		(1,204)	(808)	(2,175)	(1,325)
Cost of sales:
Cost of materials and other	[2]	(1,185)	(806)	(2,152)	(1,322)
Operating expenses (excluding depreciation and amortization expense reflected below)		3	(1)	3	(1)
Depreciation and amortization expense		(2)	0	(2)	0
Total cost of sales		(1,184)	(807)	(2,151)	(1,323)
Other operating expenses		0	0	0	0
Refining [Member]
Segment Information for our Reportable Segments
Revenues		31,996	49,495	66,403	86,308
Refining [Member] | Operating Segments [Member]
Segment Information for our Reportable Segments
Revenues		31,993	49,506	66,403	86,323
Cost of sales:
Cost of materials and other	[2]	27,773	41,313	56,283	74,919
Operating expenses (excluding depreciation and amortization expense reflected below)		1,205	1,402	2,466	2,595
Depreciation and amortization expense		582	565	1,154	1,114
Total cost of sales		29,560	43,280	59,903	78,628
Other operating expenses		1	14	11	32
General and administrative expenses (excluding depreciation and amortization expense reflected below)		0	0	0	0
Depreciation and amortization expense		0	0	0	0
Operating income		2,432	6,212	6,489	7,663
Refining [Member] | Intersegment Eliminations [Member]
Segment Information for our Reportable Segments
Revenues		(3)	11	0	15
Renewable Diesel [Member]
Segment Information for our Reportable Segments
Revenues		1,296	855	2,231	1,450
Renewable Diesel [Member] | Operating Segments [Member]
Segment Information for our Reportable Segments
Revenues		2,246	1,451	3,926	2,432
Cost of sales:
Cost of materials and other	[2]	1,643	1,213	2,974	1,968
Operating expenses (excluding depreciation and amortization expense reflected below)		104	58	190	109
Depreciation and amortization expense		59	28	117	54
Total cost of sales		1,806	1,299	3,281	2,131
Other operating expenses		0	0	0	0
General and administrative expenses (excluding depreciation and amortization expense reflected below)		0	0	0	0
Depreciation and amortization expense		0	0	0	0
Operating income		440	152	645	301
Segment Information (Textual)
Blender's tax credit		388	198	634	354
Renewable Diesel [Member] | Intersegment Eliminations [Member]
Segment Information for our Reportable Segments
Revenues		950	596	1,695	982
Ethanol [Member]
Segment Information for our Reportable Segments
Revenues		1,217	1,291	2,314	2,425
Ethanol [Member] | Operating Segments [Member]
Segment Information for our Reportable Segments
Revenues		1,474	1,492	2,794	2,753
Cost of sales:
Cost of materials and other	[2]	1,199	1,226	2,330	2,330
Operating expenses (excluding depreciation and amortization expense reflected below)		128	167	258	302
Depreciation and amortization expense		19	(3)	39	17
Total cost of sales		1,346	1,390	2,627	2,649
Other operating expenses		1	1	1	2
General and administrative expenses (excluding depreciation and amortization expense reflected below)		0	0	0	0
Depreciation and amortization expense		0	0	0	0
Operating income		127	101	166	102
Ethanol [Member] | Intersegment Eliminations [Member]
Segment Information for our Reportable Segments
Revenues		$ 257	$ 201	$ 480	$ 328

[1] Includes excise taxes on sales by certain of our foreign operations of $1,449 million and $1,254 million for the three months ended June 30, 2023 and 2022, respectively, and $2,871 million and $2,677 million for the six months ended June 30, 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 $388 million and $198 million for the three months ended June 30, 2023 and 2022, respectively, and $634 million and $354 million for the six months ended June 30, 2023 and 2022, respectively.