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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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