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Subsequent Events (Details)
 3 Months Ended
Apr. 02, 2018
USD ($)
tranche
$ / shares
shares
Jun. 30, 2018
USD ($)
Apr. 01, 2018
USD ($)
Mar. 31, 2018
USD ($)
Dec. 31, 2017
USD ($)
Mar. 31, 2017
USD ($)
Subsequent Events            
Total long-term debt       $ 1,526,865,000 $ 782,902,000  
Revolving credit facility            
Subsequent Events            
Maximum borrowing capacity       800,000,000    
Total long-term debt       819,061,000 $ 782,902,000  
Letters of credit       $ 0   $ 0
Subsequent Event | LTIP | Phantom units            
Subsequent Events            
Percentage of awards vesting 100.00%          
Vested (in units) | shares 563,544          
Amount of compensation expense recognized   $ 6,900,000        
Subsequent Event | Revolving credit facility            
Subsequent Events            
Maximum borrowing capacity $ 1,600,000,000   $ 1,100,000,000      
Amount of further potential increase in maximum capacity 400,000,000          
Total long-term debt 899,500,000          
Letters of credit $ 0          
Subsequent Event | Revolving credit facility | Eurodollar | Minimum            
Subsequent Events            
Applicable margin above reference rate (as a percent) 2.00%          
Subsequent Event | Revolving credit facility | Eurodollar | Maximum            
Subsequent Events            
Applicable margin above reference rate (as a percent) 2.75%          
Subsequent Event | Revolving credit facility | Through the end of the fiscal quarter ending March 31, 2019            
Subsequent Events            
Credit facility leverage ratio 5.75          
Subsequent Event | Revolving credit facility | Through the end of the fiscal quarter ending December 31, 2019            
Subsequent Events            
Credit facility leverage ratio 5.5          
Subsequent Event | Revolving credit facility | Thereafter            
Subsequent Events            
Credit facility leverage ratio 5.0          
Subsequent Event | EIG            
Subsequent Events            
Number of tranches of warrants | tranche 2          
Subsequent Event | Common units | ETE            
Subsequent Events            
Number of units issued in exchange for consideration | shares 12,466,912          
Cash consideration for common units $ 250,000,000          
Subsequent Event | Common units | EIG | Tranche 1            
Subsequent Events            
Number of shares that can be purchased on the warrant | shares 5,000,000          
Warrant strike price | $ / shares $ 17.03          
Subsequent Event | Common units | EIG | Tranche 2            
Subsequent Events            
Number of shares that can be purchased on the warrant | shares 10,000,000          
Warrant strike price | $ / shares $ 19.59          
Subsequent Event | Series A Perpetual Preferred units | EIG            
Subsequent Events            
Units issued | shares 500,000          
Proceeds from private placement sale $ 500,000,000          
Share price | $ / shares $ 1,000          
Structuring and origination fee percent 1.00%          
Net proceeds received $ 495,000,000          
Commitment fee percent 1.00%          
Expenses reimbursed $ 400,000          
CDM | Subsequent Event            
Subsequent Events            
Aggregate consideration 1,700,000,000          
Cash paid $ 1,232,000,000          
Limited partner | CDM | Subsequent Event | Common units            
Subsequent Events            
Number of units issued in exchange for consideration | shares 19,191,351          
Limited partner | CDM | Subsequent Event | Class B Units            
Subsequent Events            
Number of units issued in exchange for consideration | shares 6,397,965          
Equity Restructuring Agreement | Subsequent Event | ETE            
Subsequent Events            
Right of GP contribution, term 1 year          
Contingent payment for GP Contribution $ 10,000,000          
Equity Restructuring Agreement | Subsequent Event | Common units | ETE            
Subsequent Events            
Collective ownership threshold for GP Contribution (in units) | shares 12,500,000          
Equity Restructuring Agreement | General partner | Subsequent Event | Common units            
Subsequent Events            
Units issued | shares 8,000,000