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Acquisitions Narrative (Details)
gal in Millions, $ in Millions
1 Months Ended 3 Months Ended 12 Months Ended
Apr. 30, 2018
USD ($)
shares
Jan. 31, 2018
USD ($)
Mar. 31, 2018
USD ($)
Mar. 31, 2017
USD ($)
Dec. 31, 2018
gal
Revenues     $ 11,882 $ 9,661  
Retail Fuel Outlets   97      
Subsequent Event [Member]          
Long-term Purchase Commitment, Minimum Volume Required | gal         2,000
CDM Contribution [Member] | Subsequent Event [Member]          
Payments to Acquire Businesses, Gross $ 1,230        
Business Combination, Consideration Transferred 1,700        
Superior Energy Services [Member] | Subsequent Event [Member]          
Business Combination, Consideration Transferred $ 40        
Retail Fuel Outlets 100        
7-Eleven Transaction [Member]          
Business Combination, Consideration Transferred   $ 50      
Retail Fuel Outlets   26      
USA Compression Partners, LP [Member] | CDM Contribution [Member] | Subsequent Event [Member]          
Sale of Stock, Number of Shares Issued in Transaction | shares 19,191,351        
7-Eleven [Member]          
Revenues     199 $ 705  
Trade Receivables Held-for-sale, Reconciliation to Cash Flow, Period Increase (Decrease)     $ 612    
Class B Units [Member] | USA Compression Partners, LP [Member] | CDM Contribution [Member] | Subsequent Event [Member]          
Sale of Stock, Number of Shares Issued in Transaction | shares 6,397,965        
ETE [Member] | USA Compression Partners, LP [Member] | CDM Contribution [Member] | Subsequent Event [Member]          
Sale of Stock, Number of Shares Issued in Transaction | shares 12,466,912        
Equity Issued in Business Combination, Fair Value Disclosure $ 250        
Portfolio optimization plan [Member]          
Retail Fuel Outlets   97      
Sold [Member]          
Retail Fuel Outlets   47      
Under contract [Member]          
Retail Fuel Outlets   1      
Currently being marketed [Member]          
Retail Fuel Outlets   8      
7-Eleven Transaction [Member]          
Retail Fuel Outlets   32      
West Texas, Oklahoma and New Mexico [Member]          
Retail Fuel Outlets   207      
West Texas, Oklahoma and New Mexico [Member] | 7-Eleven Transaction [Member]          
Retail Fuel Outlets   9      
Additional aggregate volumes [Member] | Subsequent Event [Member]          
Long-term Purchase Commitment, Minimum Volume Required | gal         500