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Regulatory Matters, Commitments, Contingencies And Environmental Liabilities Narrative (Details) |  |  | 6 Months Ended | 9 Months Ended |
--- | --- | --- | --- | --- | ---
Sep. 21, 2022 USD ($) | Aug. 01, 2020 USD ($) | Jun. 30, 2022 USD ($) | Sep. 30, 2022 USD ($) | Sep. 30, 2021 USD ($) | Dec. 31, 2021 USD ($)
Document Period End Date |  |  |  | Sep. 30, 2022 |  |
Accrual for Environmental Loss Contingencies |  |  |  | $ 277,000,000 |  | $ 293,000,000
Loss Contingency, Estimate of Possible Loss |  |  |  | 750,000,000 |  |
Litigation Settlement, Expense |  |  |  | 161,000,000 |  |
Payments for Environmental Liabilities |  |  |  | 8,000,000 | $ 18,000,000 |
Legal Fees |  |  |  | 18,000,000 |  |
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 |  |  |  | $ 343,000,000 |  | $ 144,000,000
Sunoco, Inc. [Member] |  |  |  |  |  |
Loss Contingency, Pending Claims, Number |  |  |  | 4 |  |
Sunoco [Member] |  |  |  |  |  |
Site Contingency, Number of Sites Needing Remediation |  |  |  | 34 |  |
Culberson |  |  |  |  |  |
Loss Contingency, Damages Sought, Value |  |  |  | $ 93,064,891 |  |
Sunoco Pipeline, LP |  |  |  |  |  |
Payments for Environmental Liabilities |  |  |  | 10,000,000 |  |
Williams Litigation [Member] |  |  |  |  |  |
Loss Contingency, Damages Sought, Value |  |  |  | 410,000,000 |  |
Litigation Settlement, Expense | $ 601,000,000 |  |  |  |  |
Debt Instrument, Interest Rate, Stated Percentage | 3.50% |  |  |  |  |
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 |  |  |
Clean Water Fund Pennsylvania Department of Environmental Protection |  |  |  |  |  |
Payments for Environmental Liabilities |  |  |  | 22,500 |  |
Clean Water Fund Pennsylvania Department of Environmental Protection | Sunoco Pipeline, LP |  |  |  |  |  |
Payments for Environmental Liabilities |  |  |  | 35,000 |  |
Homeowner Well Water Supply Grievance Program | Sunoco Pipeline, LP |  |  |  |  |  |
Payments for Environmental Liabilities |  |  |  | $ 442,500 |  |

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