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Equity Narrative (Details) - USD ($)
$ / shares in Units, $ in Millions
1 Months Ended 3 Months Ended 9 Months Ended
Jul. 31, 2018
Apr. 30, 2018
Feb. 28, 2018
Jan. 31, 2018
Dec. 31, 2018
Sep. 30, 2018
Sep. 30, 2018
Sep. 30, 2017
Apr. 02, 2018
Dec. 31, 2017
Payments for Repurchase of Common Stock             $ 24.0 $ 0.0 [1]    
Other Comprehensive Income (Loss), Securities, Available-for-sale, Adjustment, before Reclassification Adjustments, after Tax             $ 2.0      
Limited Partners' Capital Account, Units Outstanding           1,158,200,000 1,158,200,000     1,079,145,561
Stock Issued During Period, Shares, Conversion of Units             79,100,000      
Series A Convertible Preferred Units           $ 0.0 $ 0.0     $ 450.0
Losses from subsidiary common unit transactions             (125.0) (57.0)    
Units issued for cash             0.0 568.0 [1]    
Stock Repurchase Program, Remaining Authorized Repurchase Amount           $ 936.0 936.0      
Payments for Repurchase of Preferred Stock and Preference Stock             $ 0.0 $ 53.0 [1]    
ETP [Member]                    
Number of common units of a subsidiary partnership that are held by a wholly-owned subsidiary of the Parent.           27,500,000 27,500,000      
Stock Issued During Period, Value, Dividend Reinvestment Plan             $ 57.0      
Proceeds From Issuance Of Common Limited Partners Units Under Equity Distribution Agreement             $ 0.0      
Sunoco LP [Member]                    
Number of common units of a subsidiary partnership that are held by a wholly-owned subsidiary of the Parent.           2,300,000 2,300,000      
Payments for Repurchase of Common Stock     $ 540.0              
Stock Repurchased During Period, Shares     17,286,859              
USAC [Member]                    
Number of common units of a subsidiary partnership that are held by a wholly-owned subsidiary of the Parent.           20,500,000 20,500,000      
Limited Partners' Capital Account, Units Outstanding           89,966,676 89,966,676      
Stock Issued During Period, Value, Dividend Reinvestment Plan             $ 0.4      
Stock Issued During Period, Shares, Dividend Reinvestment Plan             24,261      
ETE [Member]                    
Equity Distribution Agreements, Value of Units Available to be Issued           $ 1,000.0 $ 1,000.0      
Proceeds From Issuance Of Common Limited Partners Units Under Equity Distribution Agreement             $ 0.0      
Series A Preferred Units [Member]                    
Preferred Stock, Shares Issued           950,000 950,000      
Series A Preferred Units [Member] | Sunoco LP [Member]                    
Preferred Stock Redemption Premium       $ 313.0            
Payments for Repurchase of Preferred Stock and Preference Stock       $ 300.0            
Call premium on preferred units.       1.00%            
Series B Preferred Units [Member]                    
Preferred Stock, Shares Issued           550,000 550,000      
Series D Preferred Units [Member]                    
Preferred Units, Issued 17,800,000                  
Preferred Stock, Dividend Rate, Percentage 7.625%                  
Shares Issued, Price Per Share $ 25                  
Proceeds from Issuance of Preferred Limited Partners Units $ 445.0                  
Preferred Units, Liquidation Spread, Percent 4.378%                  
Series C Preferred Units [Member]                    
Preferred Units, Issued   18,000,000                
Preferred Stock, Dividend Rate, Percentage   7.375%                
Shares Issued, Price Per Share   $ 25                
Proceeds from Issuance of Preferred Limited Partners Units   $ 450.0                
Preferred Units, Liquidation Spread, Percent   4.53%                
Convertible Preferred Stock [Member]                    
Limited Partners' Capital Account, Units Outstanding           0 0     329,300,000
Stock Issued During Period, Shares, Conversion of Units             (329,300,000)      
ETP [Member] | USAC [Member]                    
Number of common units of a subsidiary partnership that are held by a wholly-owned subsidiary of the Parent.           19,191,351 19,191,351      
ETP [Member] | Class B Units [Member] | USAC [Member]                    
Number of common units of a subsidiary partnership that are held by a wholly-owned subsidiary of the Parent.           6,397,965 6,397,965      
ETE [Member] | USAC [Member]                    
Number of common units of a subsidiary partnership that are held by a wholly-owned subsidiary of the Parent.           20,466,912 20,466,912      
Series A Convertible Preferred Units [Member]                    
Distribution Made to Limited Partner, Distributions Declared, Per Unit           $ 0.11        
Strike price of $17.03 [Member] | USAC [Member]                    
Class of Warrant or Right, Number of Securities Called by Warrants or Rights                 5,000,000  
Class of Warrant or Right, Exercise Price of Warrants or Rights                 $ 17.03  
Strike price of $19.59 [Member] | USAC [Member]                    
Class of Warrant or Right, Number of Securities Called by Warrants or Rights                 10,000,000  
Class of Warrant or Right, Exercise Price of Warrants or Rights                 $ 19.59  
ETE Merger [Member] | Subsequent Event [Member]                    
Sale of Stock, Number of Shares Issued in Transaction         1,460,000,000          
ETE Merger [Member] | Subsequent Event [Member] | Sunoco LP [Member]                    
Sale of Stock, Number of Shares Issued in Transaction         2,263,158          
ETE Merger [Member] | Subsequent Event [Member] | USAC [Member]                    
Sale of Stock, Number of Shares Issued in Transaction         12,466,912          
ETE Merger [Member] | ETP [Member] | Subsequent Event [Member] | Sunoco LP [Member]                    
Sale of Stock, Number of Shares Issued in Transaction         2,874,275          
ETE Merger [Member] | ETP [Member] | Subsequent Event [Member] | USAC [Member]                    
Sale of Stock, Number of Shares Issued in Transaction         16,134,903          
ETE Merger [Member] | ETE Class A Units [Member] | Subsequent Event [Member]                    
Sale of Stock, Number of Shares Issued in Transaction         650,000,000          
[1] As adjusted. See Note 1.