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Revenues and Segment Information, Assets (Details) - USD ($) $ in Millions	Jun. 30, 2024	Dec. 31, 2023
Total Assets by Reportable Segment
Reportable segment assets	$ 63,615	$ 63,056
Corporate and Eliminations [Member]
Total Assets by Reportable Segment
Reportable segment assets	6,289	6,686
Refining [Member] | Operating Segments [Member]
Total Assets by Reportable Segment
Reportable segment assets	49,871	49,031
Renewable Diesel [Member] | Operating Segments [Member]
Total Assets by Reportable Segment
Reportable segment assets	5,941	5,790
Ethanol [Member] | Operating Segments [Member]
Total Assets by Reportable Segment
Reportable segment assets	$ 1,514	$ 1,549

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