Revenues and Accounts Receivable - 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
Crude Oil | Sales
Disaggregation of Revenue
Revenue from contracts with customers	$ 15,576	$ 9,623	$ 28,433	$ 17,349
Crude Oil | Transportation
Disaggregation of Revenue
Revenue from contracts with customers	175	113	330	203
Crude Oil | Terminalling, Storage and Other
Disaggregation of Revenue
Revenue from contracts with customers	90	116	180	246
NGL | Sales
Disaggregation of Revenue
Revenue from contracts with customers	499	355	1,344	1,128
NGL | Transportation
Disaggregation of Revenue
Revenue from contracts with customers	7	5	16	12
NGL | Terminalling, Storage and Other
Disaggregation of Revenue
Revenue from contracts with customers	20	21	45	42
Operating Segments
Disaggregation of Revenue
Revenue from contracts with customers	16,367	10,233	30,348	18,980
Operating Segments | Crude Oil
Disaggregation of Revenue
Revenue from contracts with customers	15,841	9,852	28,943	17,798
Operating Segments | NGL
Disaggregation of Revenue
Revenue from contracts with customers	$ 526	$ 381	$ 1,405	$ 1,182