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Segment Information - Segment Financial Data (Details)
$ in Millions
 3 Months Ended
Mar. 31, 2023
USD ($)
segment
Mar. 31, 2022
USD ($)
Segment Reporting Information    
Operating segments number | segment 2  
Reportable segments number | segment 2  
Revenues:    
Revenues $ 12,341 $ 13,694
Segment Reporting, Disclosure of Other Information about Entity's Reportable Segments    
Equity earnings in unconsolidated entities 89 97
Segment Adjusted EBITDA 709 614
Maintenance capital expenditures 48 27
Product sales revenues    
Revenues:    
Revenues 11,943 13,381
Services revenues    
Revenues:    
Revenues 398 313
Operating Segments    
Revenues:    
Revenues 12,448 13,814
Intersegment Revenues Elimination    
Revenues:    
Revenues (107) (120)
Intersegment Revenues Elimination | Product sales revenues    
Revenues:    
Revenues (101) (112)
Intersegment Revenues Elimination | Services revenues    
Revenues:    
Revenues (6) (8)
Crude Oil    
Segment Reporting, Disclosure of Other Information about Entity's Reportable Segments    
Equity earnings in unconsolidated entities 89 97
Segment Adjusted EBITDA 517 453
Maintenance capital expenditures 32 19
Crude Oil | Operating Segments    
Revenues:    
Revenues 11,758 13,079
Crude Oil | Operating Segments | Product sales revenues    
Revenues:    
Revenues 11,409 12,811
Crude Oil | Operating Segments | Services revenues    
Revenues:    
Revenues 349 268
NGL    
Segment Reporting, Disclosure of Other Information about Entity's Reportable Segments    
Segment Adjusted EBITDA 192 161
Maintenance capital expenditures 16 8
NGL | Operating Segments    
Revenues:    
Revenues 690 735
NGL | Operating Segments | Product sales revenues    
Revenues:    
Revenues 635 682
NGL | Operating Segments | Services revenues    
Revenues:    
Revenues $ 55 $ 53