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Regulatory Matters, Commitments, Contingencies And Environmental Liabilities Narrative (Details)
3 Months Ended 12 Months Ended
Sep. 21, 2022
USD ($)
Aug. 01, 2020
USD ($)
Mar. 31, 2023
USD ($)
Mar. 31, 2022
USD ($)
Dec. 31, 2022
USD ($)
Dec. 31, 2017
USD ($)
Accrual for Environmental Loss Contingencies     $ 276,000,000   $ 282,000,000  
Loss Contingency, Estimate of Possible Loss     800,000,000      
Litigation Settlement, Expense     161,000,000      
Payments for Environmental Liabilities     8,000,000 $ 4,000,000    
Proposed Civil Penalty            
Payments for Legal Settlements     20,000,000      
Litigation Settlement, Expense     40,000,000      
Related To Deductibles            
Loss Contingency Accrual, at Carrying Value     $ 217,000,000   200,000,000  
Sunoco, Inc. [Member]            
Loss Contingency, Pending Claims, Number     2      
Sunoco [Member]            
Site Contingency, Number of Sites Needing Remediation     31      
Culberson            
Loss Contingency, Damages Sought, Value     $ 93,000,000      
Williams Litigation [Member]            
Loss Contingency, Damages Sought, Value     410,000,000     $ 1,480,000,000
Litigation Settlement, Expense $ 601,000,000          
Debt Instrument, Interest Rate, Stated Percentage 3.50%          
Legal Fees     190,000,000      
Cline Class Action | Actual Damages            
Payments for Legal Settlements   $ 74,800,000     80,700,000  
Cline Class Action | punitive damages            
Payments for Legal Settlements         $ 75,000,000  
Massachusetts Attorney General            
Legal Fees     $ 18,000,000