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Revenues and Accounts Receivable - Segment Revenue (Details) - USD ($)
$ in Millions
 3 Months Ended 6 Months Ended
Jun. 30, 2022
Jun. 30, 2021
Jun. 30, 2022
Jun. 30, 2021
Disaggregation of Revenue [Line Items]        
Total revenues $ 16,359 $ 9,930 $ 30,053 $ 18,313
Operating Segments        
Disaggregation of Revenue [Line Items]        
Revenues from contracts with customers 16,367 10,233 30,348 18,980
Other items in revenues 143 (224) (25) (479)
Total revenues 16,510 10,009 30,323 18,501
Operating Segments | Crude Oil        
Disaggregation of Revenue [Line Items]        
Revenues from contracts with customers 15,841 9,852 28,943 17,798
Other items in revenues 99 (73) 76 (166)
Total revenues 15,940 9,779 29,019 17,632
Operating Segments | NGL        
Disaggregation of Revenue [Line Items]        
Revenues from contracts with customers 526 381 1,405 1,182
Other items in revenues 44 (151) (101) (313)
Total revenues 570 230 1,304 869
Intersegment revenue elimination        
Disaggregation of Revenue [Line Items]        
Total revenues $ (151) $ (79) $ (270) $ (188)