Amount, excluding tax collected from customer, of revenue from satisfaction of performance obligation by transferring promised good or service to customer. Tax collected from customer is tax assessed by governmental authority that is both imposed on and concurrent with specific revenue-producing transaction, including, but not limited to, sales, use, value added and excise.

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+ Details

Segment Reporting - Disaggregation of Revenue (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021
Energy Segment
Disaggregation of Revenue [Line Items]
Disaggregated revenue	$ 3,144	$ 1,783	$ 5,517	$ 3,246
Automotive Segment
Disaggregation of Revenue [Line Items]
Disaggregated revenue	608	637	1,162	1,235
Petroleum products \| Energy Segment
Disaggregation of Revenue [Line Items]
Disaggregated revenue	2,900	1,645	5,050	3,047
Nitrogen fertilizer products \| Energy Segment
Disaggregation of Revenue [Line Items]
Disaggregated revenue	244	138	467	199
Automotive services \| Automotive Segment
Disaggregation of Revenue [Line Items]
Disaggregated revenue	393	347	746	669
Aftermarket parts sales
Disaggregation of Revenue [Line Items]
Disaggregated revenue	$ 215	$ 290	$ 416	$ 566