Income Taxes Narrative (Details) - USD ($) $ in Millions	1 Months Ended		12 Months Ended
	Dec. 31, 2017	Nov. 30, 2017	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Operating Loss Carryforwards [Line Items]
Deferred Tax Assets, Operating Loss Carryforwards, Subject to Expiration			$ 1,800
Operating Loss Carryforwards, Expiration Date			Jan. 01, 2031
Deferred Tax Liabilities, Gross	$ 4,035		$ 3,826	$ 4,035
Unrecognized Tax Benefits that Would Impact Effective Tax Rate			620
Net operating losses, alternative minimum tax credit and other carryforwards	683		768	683
Operating Loss Carryforwards	364			364
Valuation allowance	$ (189)		(96)	(189)
Unrecognized Tax Benefits That Would Impact Effective Tax Rate, Ater Tax			588
Proceeds from Income Tax Refunds			530
Deferred Tax Assets, Tax Deferred Expense, Reserves and Accruals, Allowance for Doubtful Accounts			530
State			19	(16)	$ (34)
Unrecognized Tax Benefits, Interest on Income Taxes Expense			6
Income Tax Examination, Penalties and Interest Accrued			15
Effective Income Tax Rate Reconciliation, at Federal Statutory Income Tax Rate, Percent	21.00%	35.00%
Tax Credit Carryforward, Valuation Allowance			98
Deferred Income Tax Expense (Benefit)			(7)	$ (1,871)	$ (177)
ETP Holdco and other corporate subsidiaries [Member]
Operating Loss Carryforwards [Line Items]
Operating Loss Carryforwards			2,600
Corporate Subsidiaries [Member]
Operating Loss Carryforwards [Line Items]
Net operating losses, alternative minimum tax credit and other carryforwards			31
Deferred Tax Assets, Operating Loss Carryforwards, State and Local			168
Net of federal tax [Member]
Operating Loss Carryforwards [Line Items]
State			$ 53
Maximum [Member] | ETP Holdco and other corporate subsidiaries [Member]
Operating Loss Carryforwards [Line Items]
Operating Loss Carryforwards, Expiration Date			Dec. 31, 2037
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, 2019
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			$ 16
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