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Segment Reporting - Disaggregation of Revenue (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Energy Segment
Disaggregation of Revenue [Line Items]
Disaggregated revenue	$ 2,522	$ 2,699	$ 7,045	$ 8,216
Automotive Segment
Disaggregation of Revenue [Line Items]
Disaggregated revenue	430	612	1,283	1,774
Petroleum products | Energy Segment
Disaggregation of Revenue [Line Items]
Disaggregated revenue	2,392	2,543	6,505	7,593
Nitrogen fertilizer products | Energy Segment
Disaggregation of Revenue [Line Items]
Disaggregated revenue	130	156	540	623
Automotive Services | Automotive Segment
Disaggregation of Revenue [Line Items]
Disaggregated revenue	406	410	1,167	1,156
Aftermarket Parts
Disaggregation of Revenue [Line Items]
Disaggregated revenue	$ 24	$ 202	$ 116	$ 618

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