Revenues and Segment Information, Disaggregation of Revenue by Product (Details) - USD ($) $ in Millions		3 Months Ended
		Mar. 31, 2022	Mar. 31, 2021
Revenue by Segment
Revenues	[1]	$ 38,542	$ 20,806
Refining [Member]
Revenue by Segment
Revenues		36,813	19,469
Refining [Member] | Gasoline and Blendstocks [Member]
Revenue by Segment
Revenues		15,560	8,729
Refining [Member] | Distillates [Member]
Revenue by Segment
Revenues		17,444	8,581
Refining [Member] | Other Product Revenues [Member]
Revenue by Segment
Revenues		3,809	2,159
Renewable Diesel [Member]
Revenue by Segment
Revenues		595	352
Renewable Diesel [Member] | Renewable Diesel [Member]
Revenue by Segment
Revenues		595	352
Ethanol [Member]
Revenue by Segment
Revenues		1,134	985
Ethanol [Member] | Ethanol [Member]
Revenue by Segment
Revenues		875	752
Ethanol [Member] | Distillers Grains [Member]
Revenue by Segment
Revenues		$ 259	$ 233

[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