Revenues and Segment Information, Assets (Details) - USD ($) $ in Millions	Mar. 31, 2022	Dec. 31, 2021
Total Assets by Reportable Segment
Reportable segment assets	$ 60,402	$ 57,888
Corporate and Eliminations [Member]
Total Assets by Reportable Segment
Reportable segment assets	3,618	5,274
Refining [Member] | Operating Segments [Member]
Total Assets by Reportable Segment
Reportable segment assets	51,071	47,365
Renewable Diesel [Member] | Operating Segments [Member]
Total Assets by Reportable Segment
Reportable segment assets	3,933	3,437
Ethanol [Member] | Operating Segments [Member]
Total Assets by Reportable Segment
Reportable segment assets	$ 1,780	$ 1,812