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Revenues and Accounts Receivable - Disaggregation of Revenue (Details) - Operating Segments - USD ($)
$ in Millions
3 Months Ended 6 Months Ended
Jun. 30, 2025
Jun. 30, 2024
Jun. 30, 2025
Jun. 30, 2024
Disaggregation of Revenue        
Revenue from contracts with customers $ 10,681 $ 12,742 $ 22,130 $ 24,381
Crude Oil        
Disaggregation of Revenue        
Revenue from contracts with customers 10,655 12,717 22,063 24,295
NGL        
Disaggregation of Revenue        
Revenue from contracts with customers 26 25 67 86
Sales | Crude Oil        
Disaggregation of Revenue        
Revenue from contracts with customers 10,228 12,327 21,236 23,513
Sales | NGL        
Disaggregation of Revenue        
Revenue from contracts with customers 24 23 66 84
Transportation | Crude Oil        
Disaggregation of Revenue        
Revenue from contracts with customers 340 295 652 595
Terminalling, Storage and Other | Crude Oil        
Disaggregation of Revenue        
Revenue from contracts with customers 87 95 175 187
Terminalling, Storage and Other | NGL        
Disaggregation of Revenue        
Revenue from contracts with customers $ 2 $ 2 $ 1 $ 2