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Unit-Based Compensation Plans Subsidiary Unit-Based Compensation Plans (Details) - USD ($)
$ / shares in Units, shares in Millions, $ in Millions
12 Months Ended
Dec. 31, 2017
Dec. 31, 2016
Dec. 31, 2015
Subsidiary Unit Based Compensation [Member]      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Fair Value Of Units As Of The Vesting Date $ 40.0 $ 40.0 $ 57.0
Employee Service Share-based Compensation, Nonvested Awards, Compensation Cost Not yet Recognized $ 216.0    
Equity Instruments Other than Options, Outstanding, Weighted Average Remaining Contractual Term 2 years 9 months    
ETP Unit-Based Compensation Plans [Member]      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Unvested awards 14.1 9.4  
Weighted Average Grant-Date Fair Value Per ETP Unit $ 23.18 $ 27.68  
Awards granted 4.9    
Weighted Average Grant-Date Fair Value Per ETP Unit, Awards granted $ 17.69 $ 23.82 $ 23.47
Awards vested (2.3)    
Weighted Average Grant-Date Fair Value Per ETP Unit, Awards vested $ 34.22    
Stock Granted, Value, Share-based Compensation, Forfeited $ (1.1)    
Weighted Average Grant-Date Fair Value Per ETP Unit, Awards forfeited $ 25.03    
Sunoco LP Unit Based Compensation Plans [Member]      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Unvested awards 1.7 2.0  
Weighted Average Grant-Date Fair Value Per ETP Unit $ 31.89 $ 34.43  
Awards granted 0.2    
Weighted Average Grant-Date Fair Value Per ETP Unit, Awards granted $ 28.31 $ 26.95 $ 40.63
Awards vested (0.3)    
Weighted Average Grant-Date Fair Value Per ETP Unit, Awards vested $ 45.48    
Stock Granted, Value, Share-based Compensation, Forfeited $ (0.2)    
Weighted Average Grant-Date Fair Value Per ETP Unit, Awards forfeited $ 34.71    
Legacy Sunoco Logistics Unit-Based Compensation Plans [Member]      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Unvested awards   3.2  
Weighted Average Grant-Date Fair Value Per ETP Unit   $ 28.57