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Debt Obligations Debt Obligations (Covenants Related To Credit Agrrements) (Narrative) (Details)
$ in Millions
12 Months Ended
Dec. 31, 2017
USD ($)
Debt Instrument [Line Items]  
Leverage Ratio Maximum 6.0
Maximum Leverage Ratio Permitted 7
Supplementary Leverage Ratio 396.00%
Debt instrument covenant minimum fixed charge coverage ratio 1.5
ETP [Member]  
Debt Instrument [Line Items]  
Leverage Ratio Maximum 5.0
Maximum Leverage Ratio Permitted 5.5
Bakken Project $2.50 billion Credit Facility due August 2019 [Member]  
Debt Instrument [Line Items]  
Minimum debt service coverage ratio 1.20
Sunoco LP $1.5 Billion Revolving Credit Facility Due September 2019 [Member] | Sunoco LP [Member]  
Debt Instrument [Line Items]  
Minimum interest coverage ratio 0
Eurodollar [Member] | Maximum [Member]  
Debt Instrument [Line Items]  
Debt Instrument, Basis Spread on Variable Rate 2.00%