Revenues and Segment Information, Total Assets by Reportable Segments (Details) - USD ($) $ in Millions	Dec. 31, 2023	Dec. 31, 2022
Total Assets by Reportable Segments
Reportable segment assets	$ 63,056	$ 60,982
Equity Method Investments (Textual):
Investments in nonconsolidated joint ventures	713	724
Corporate and Eliminations [Member]
Total Assets by Reportable Segments
Reportable segment assets	6,686	5,730
Refining [Member]
Equity Method Investments (Textual):
Investments in nonconsolidated joint ventures	713	724
Refining [Member] | Operating Segments [Member]
Total Assets by Reportable Segments
Reportable segment assets	49,031	48,484
Renewable Diesel [Member] | Operating Segments [Member]
Total Assets by Reportable Segments
Reportable segment assets	5,790	5,217
Ethanol [Member] | Operating Segments [Member]
Total Assets by Reportable Segments
Reportable segment assets	$ 1,549	$ 1,551