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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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