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Income Taxes Narrative (Details) - USD ($) $ in Millions | 12 Months Ended |
--- | --- | ---
Dec. 31, 2019 | Dec. 31, 2018 | Dec. 31, 2017 | Oct. 31, 2019
Operating Loss Carryforwards [Line Items] |  |  |  |
Deferred Tax Assets, Operating Loss Carryforwards, Subject to Expiration | $ 1,100 |  |  |
Deferred Tax Liabilities, Gross | 4,141 | $ 3,826 |  |
Unrecognized Tax Benefits that Would Impact Effective Tax Rate | 90 |  |  |
Net operating losses, alternative minimum tax credit and other carryforwards | 936 | 768 |  |
Valuation allowance | (95) | (96) |  |
Unrecognized Tax Benefits That Would Impact Effective Tax Rate, Ater Tax | 72 |  |  |
State | (2) | 19 | $ (16) |
Unrecognized Tax Benefits, Interest on Income Taxes Expense | 1 |  |  |
Income Tax Examination, Penalties and Interest Accrued | 3 |  |  |
Deferred Income Tax Expense (Benefit) | 217 | (7) | (1,871) |
Effective Income Tax Rate Reconciliation, Change in Enacted Tax Rate, Amount | 0 | $ 0 | $ (1,812) |
Tax Credit Carryforward, Valuation Allowance | 49 |  |  |
ETP Holdco and other corporate subsidiaries [Member] |  |  |  |
Operating Loss Carryforwards [Line Items] |  |  |  |
Operating Loss Carryforwards | 2,650 |  |  |
SemGroup [Member] |  |  |  |
Operating Loss Carryforwards [Line Items] |  |  |  |
Operating Loss Carryforwards | 766 |  |  |
Corporate Subsidiaries [Member] |  |  |  |
Operating Loss Carryforwards [Line Items] |  |  |  |
Net operating losses, alternative minimum tax credit and other carryforwards | 15 |  |  |
Deferred Tax Asset, Interest Carryforward | $ 35 |  |  |
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
Net of federal tax [Member] |  |  |  |
Operating Loss Carryforwards [Line Items] |  |  |  |
State | $ 53 |  |  |
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 |  |  |
Expiring between 2031 and 2037 [Member] | SemGroup [Member] |  |  |  |
Operating Loss Carryforwards [Line Items] |  |  |  |
Operating Loss Carryforwards | $ 185 |  |  |
Reclassed to current income tax receivable within 12 months [Member] |  |  |  |
Operating Loss Carryforwards [Line Items] |  |  |  |
Net operating losses, alternative minimum tax credit and other carryforwards | 8 |  |  |
Expiring between 2020 and 2038 [Member] | Corporate Subsidiaries [Member] |  |  |  |
Operating Loss Carryforwards [Line Items] |  |  |  |
Deferred Tax Assets, Operating Loss Carryforwards, State and Local | 118 |  |  |
Expiring in 2033 [Member] | Corporate Subsidiaries [Member] |  |  |  |
Operating Loss Carryforwards [Line Items] |  |  |  |
Operating Loss Carryforwards | 68 |  |  |
Expiring in 2020 [Member] | Corporate Subsidiaries [Member] |  |  |  |
Operating Loss Carryforwards [Line Items] |  |  |  |
Deferred Tax Assets, Tax Credit Carryforwards, Foreign | 45 |  |  |
Pennsylvania Constitution [Member] |  |  |  |
Operating Loss Carryforwards [Line Items] |  |  |  |
State | 67 |  |  |
Deferred Tax Assets, Tax Deferred Expense, Reserves and Accruals, Contingencies | 34 |  |  |
Pennsylvania Constitution [Member] | Net of federal tax [Member] |  |  |  |
Operating Loss Carryforwards [Line Items] |  |  |  |
Deferred Tax Assets, Tax Deferred Expense, Reserves and Accruals, Contingencies | 27 |  |  |
Canada, Dollars | Corporate Subsidiaries [Member] |  |  |  |
Operating Loss Carryforwards [Line Items] |  |  |  |
Tax Credit Carryforward, Valuation Allowance | $ 46 |  |  |

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