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Revenues and Accounts Receivable - Disaggregation of Revenue (Details) - Operating Segments - USD ($)
$ in Millions
3 Months Ended
Mar. 31, 2023
Mar. 31, 2022
Disaggregation of Revenue    
Revenue from contracts with customers $ 12,417 $ 13,981
Crude Oil    
Disaggregation of Revenue    
Revenue from contracts with customers 11,721 13,102
Crude Oil | Sales    
Disaggregation of Revenue    
Revenue from contracts with customers 11,381 12,857
Crude Oil | Transportation    
Disaggregation of Revenue    
Revenue from contracts with customers 250 155
Crude Oil | Terminalling, Storage and Other    
Disaggregation of Revenue    
Revenue from contracts with customers 90 90
NGL    
Disaggregation of Revenue    
Revenue from contracts with customers 696 879
NGL | Sales    
Disaggregation of Revenue    
Revenue from contracts with customers 660 845
NGL | Transportation    
Disaggregation of Revenue    
Revenue from contracts with customers 8 9
NGL | Terminalling, Storage and Other    
Disaggregation of Revenue    
Revenue from contracts with customers $ 28 $ 25