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Revenues and Accounts Receivable - Segment Revenue (Details) - USD ($)
$ in Millions
 3 Months Ended 9 Months Ended
Sep. 30, 2023
Sep. 30, 2022
Sep. 30, 2023
Sep. 30, 2022
Disaggregation of Revenue        
Total revenues $ 12,071 $ 14,336 $ 36,014 $ 44,390
Operating Segments        
Disaggregation of Revenue        
Revenues from contracts with customers 12,270 14,082 36,231 44,431
Other revenues (94) 363 69 338
Total revenues 12,176 14,445 36,300 44,769
Operating Segments | Crude Oil        
Disaggregation of Revenue        
Revenues from contracts with customers 11,957 13,637 34,966 42,581
Other revenues (23) 38 22 113
Total revenues 11,934 13,675 34,988 42,694
Operating Segments | NGL        
Disaggregation of Revenue        
Revenues from contracts with customers 313 445 1,265 1,850
Other revenues (71) 325 47 225
Total revenues 242 770 1,312 2,075
Intersegment revenues elimination        
Disaggregation of Revenue        
Total revenues $ (105) $ (109) $ (286) $ (379)