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Segment Reporting - Disaggregation of Revenue (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2023	Jun. 30, 2022
Energy Segment
Disaggregation of Revenue [Line Items]
Disaggregated revenue	$ 2,237	$ 3,144	$ 4,523	$ 5,517
Automotive Segment
Disaggregation of Revenue [Line Items]
Disaggregated revenue	412	608	853	1,162
Petroleum products | Energy Segment
Disaggregation of Revenue [Line Items]
Disaggregated revenue	2,054	2,900	4,114	5,050
Nitrogen fertilizer products | Energy Segment
Disaggregation of Revenue [Line Items]
Disaggregated revenue	183	244	409	467
Automotive services | Automotive Segment
Disaggregation of Revenue [Line Items]
Disaggregated revenue	392	393	761	746
Aftermarket parts sales
Disaggregation of Revenue [Line Items]
Disaggregated revenue	$ 20	$ 215	$ 92	$ 416

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