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Equity Narrative (Details) - USD ($)
$ / shares in Units, $ in Millions
1 Months Ended 3 Months Ended 6 Months Ended
Jul. 31, 2019
Apr. 30, 2019
Dec. 31, 2018
Jun. 30, 2019
Jun. 30, 2018
Payments for Repurchase of Common Stock       $ 0.0 $ 24.0
Losses from subsidiary common unit transactions       0.0 $ (125.0)
Stock Repurchase Program, Remaining Authorized Repurchase Amount       $ 936.0  
Stock Issued During Period, Shares, Dividend Reinvestment Plan       3,400,000  
Common Units Remaining Available to be Issued Under Distribution Reinvestment Plan       37,000,000  
ET [Member]          
Equity Distribution Agreements, Value of Units Available to be Issued       $ 1,000.0  
Proceeds From Issuance Of Common Limited Partners Units Under Equity Distribution Agreement       0.0  
USAC [Member]          
Stock Issued During Period, Value, Dividend Reinvestment Plan       $ 0.5  
Stock Issued During Period, Shares, Dividend Reinvestment Plan       30,241  
Series E Preferred Units [Member]          
Preferred Stock, Shares Issued   32,000,000      
Preferred Stock, Dividend Rate, Percentage   7.60%      
Shares Issued, Price Per Share   $ 25      
Preferred Units, Liquidation Spread, Percent   5.161%      
Proceeds from Issuance of Preferred Limited Partners Units   $ 800.0      
ETE Merger [Member] | Sunoco LP [Member]          
Sale of Stock, Number of Shares Issued in Transaction     2,263,158    
ETE Merger [Member] | USAC [Member]          
Sale of Stock, Number of Shares Issued in Transaction     12,466,912    
Equity Distribution Program [Member] | Sunoco LP [Member]          
Equity Distribution Agreements, Value of Units Available to be Issued       $ 295.0  
Partners' Capital Account, Units, Sale of Units       0  
Over-Allotment Option [Member] | Series E Preferred Units [Member]          
Preferred Stock, Shares Issued   4,000,000      
Proceeds from Issuance of Preferred Limited Partners Units   $ 100.0      
Series E Preferred Units [Member]          
Preferred Units, Outstanding       32,000,000  
Series D Preferred Units [Member]          
Preferred Units, Outstanding       17,800,000  
Series C Preferred Units [Member]          
Preferred Units, Outstanding       18,000,000  
Series B Preferred Units [Member]          
Preferred Units, Outstanding       550,000  
Series A Preferred Units [Member]          
Preferred Units, Outstanding       950,000  
Subsequent Event [Member] | Class B Units [Member] | USAC [Member]          
Partners' Capital Account, Units, Converted 6,397,965        
Subsequent Event [Member] | USAC [Member]          
Stock Issued During Period, Shares, Conversion of Units 6,397,965