Segment Reporting - Disaggregation of Revenue (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2025	Mar. 31, 2024
Energy
Disaggregation of Revenue [Line Items]
Disaggregated revenue	$ 1,646	$ 1,863
Automotive Segment
Disaggregation of Revenue [Line Items]
Disaggregated revenue	335	369
Lease revenue outside the scope of ASC 606	14	15
Total Automotive net sales and other revenues from operations	349	384
Petroleum products | Energy
Disaggregation of Revenue [Line Items]
Disaggregated revenue	1,475	1,718
Renewable products | Energy
Disaggregation of Revenue [Line Items]
Disaggregated revenue	28	17
Nitrogen fertilizer products | Energy
Disaggregation of Revenue [Line Items]
Disaggregated revenue	143	128
Automotive Services | Automotive Segment
Disaggregation of Revenue [Line Items]
Disaggregated revenue	333	356
Automotive Parts | Automotive Segment
Disaggregation of Revenue [Line Items]
Disaggregated revenue	$ 2	$ 13