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Income Taxes Narrative (Details) - USD ($) | 12 Months Ended |
--- | --- | ---
Dec. 31, 2020 | Dec. 31, 2019 | Dec. 31, 2018 | Oct. 31, 2019
Operating Loss Carryforwards [Line Items] |  |  |  |
Deferred Tax Assets, Operating Loss Carryforwards, Subject to Expiration | $ 1,300,000,000 |  |  |
Deferred Tax Liabilities, Gross | 4,375,000,000 | $ 4,141,000,000 |  |
Unrecognized Tax Benefits that Would Impact Effective Tax Rate | 90,000,000 |  |  |
Net operating losses, alternative minimum tax credit and other carryforwards | 1,047,000,000 | 936,000,000 |  |
Operating Loss Carryforwards | 787,000,000 |  |  |
Valuation allowance | (134,000,000) | (95,000,000) |  |
Unrecognized Tax Benefits That Would Impact Effective Tax Rate, Ater Tax | 48,000,000 |  |  |
State | 32,000,000 | (2,000,000) | $ 19,000,000 |
Unrecognized Tax Benefits, Interest on Income Taxes Expense | 7,000,000 |  |  |
Income Tax Examination, Penalties and Interest Accrued | 10,000,000 |  |  |
Deferred Income Tax Expense (Benefit) | 210,000,000 | $ 217,000,000 | $ (7,000,000) |
Tax Credit Carryforward, Valuation Allowance | 89,000,000 |  |  |
ETP Holdco and other corporate subsidiaries [Member] |  |  |  |
Operating Loss Carryforwards [Line Items] |  |  |  |
Operating Loss Carryforwards | 3,730,000,000 |  |  |
Corporate Subsidiaries [Member] |  |  |  |
Operating Loss Carryforwards [Line Items] |  |  |  |
Deferred Tax Asset, Interest Carryforward | 129,000,000 |  |  |
Deferred Tax Assets, Operating Loss Carryforwards, State and Local | $ 174,000,000 |  |  |
Holdco [Member] |  |  |  |
Operating Loss Carryforwards [Line Items] |  |  |  |
Operating Loss Carryforwards, Expiration Date | Jan. 01, 2031 |  |  |
Sunoco, Inc. [Member] |  |  |  |
Operating Loss Carryforwards [Line Items] |  |  |  |
Estimated Litigation Liability |  |  |  | $ 530,000,000
Sunoco LP [Member] |  |  |  |
Operating Loss Carryforwards [Line Items] |  |  |  |
Operating Loss Carryforwards | $ 121,000,000 |  |  |
Sunoco Property Company LLC [Member] |  |  |  |
Operating Loss Carryforwards [Line Items] |  |  |  |
Operating Loss Carryforwards | 0 |  |  |
Net of federal tax [Member] |  |  |  |
Operating Loss Carryforwards [Line Items] |  |  |  |
State | 53,000,000 |  |  |
CANADA |  |  |  |
Operating Loss Carryforwards [Line Items] |  |  |  |
Operating Loss Carryforwards | $ 7,000,000 |  |  |
Maximum [Member] | Corporate Subsidiaries [Member] |  |  |  |
Operating Loss Carryforwards [Line Items] |  |  |  |
Operating Loss Carryforwards, Expiration Date | Dec. 31, 2037 |  |  |
Minimum [Member] | Corporate Subsidiaries [Member] |  |  |  |
Operating Loss Carryforwards [Line Items] |  |  |  |
Operating Loss Carryforwards, Expiration Date | Jan. 01, 2020 |  |  |
Pennsylvania Constitution [Member] |  |  |  |
Operating Loss Carryforwards [Line Items] |  |  |  |
State | $ 67,000,000 |  |  |
Deferred Tax Assets, Tax Deferred Expense, Reserves and Accruals, Contingencies | 34,000,000 |  |  |
Pennsylvania Constitution [Member] | Net of federal tax [Member] |  |  |  |
Operating Loss Carryforwards [Line Items] |  |  |  |
Deferred Tax Assets, Tax Deferred Expense, Reserves and Accruals, Contingencies | 27,000,000 |  |  |
Canada, Dollars | Corporate Subsidiaries [Member] |  |  |  |
Operating Loss Carryforwards [Line Items] |  |  |  |
Tax Credit Carryforward, Valuation Allowance | $ 45,000,000 |  |  |

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