v3.8.0.1
Acquisition and Divestitures PPA table (Details) - USD ($)
$ in Millions
Oct. 30, 2017
Sep. 30, 2017
[1]
Dec. 31, 2016
Business Acquisition [Line Items]      
Goodwill   $ 861 $ 117
Subsequent Event | WNRL Merger      
Business Acquisition [Line Items]      
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Cash and Equivalents $ 22    
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Assets, Receivables 130    
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Inventory 11    
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Assets, Prepaid Expense and Other Assets 6    
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Property, Plant, and Equipment [2] 1,301    
Goodwill 734    
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Finite-Lived Intangibles 130    
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Other Noncurrent Assets 2    
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Liabilities, Accounts Payable (167)    
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Liabilities, Other (41)    
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Noncurrent Liabilities, Long-term Debt 347    
Business Combination, Recognized Identifiable Assets Acquired, Goodwill, and Liabilities Assumed, Less Noncontrolling Interest $ 1,781    
Subsequent Event | Minimum | WNRL Merger      
Business Acquisition [Line Items]      
Property, Plant and Equipment, Useful Life 3 years    
Subsequent Event | Maximum [Member] | WNRL Merger      
Business Acquisition [Line Items]      
Property, Plant and Equipment, Useful Life 22 years    
[1] (a)Adjusted to include the historical results of the Predecessors. See Note 1 for further discussion.
[2] (a)Estimated useful lives ranging from 3 to 22 years have been assumed based on the preliminary valuation.