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Acquisitions (Details) - Western Refining Wholesale, LLC [Member] - USD ($)
$ in Millions
1 Months Ended
Oct. 31, 2014
Oct. 15, 2014
Business Acquisition [Line Items]    
Payments to Acquire Businesses, Gross $ 320  
Limited Liability Company (LLC) or Limited Partnership (LP), Members or Limited Partners, Ownership Interest 66.20%  
Payments for (Proceeds from) Businesses and Interest in Affiliates $ 51  
Intercompany Agreements, Description 10  
Common Units [Member]    
Business Acquisition [Line Items]    
Limited Partners' Capital Account, Units Issued   1,160,092
Revolving Credit Facility [Member] | Revolving Credit Agreement - WNRL [Member]    
Business Acquisition [Line Items]    
Long-term Line of Credit   $ 269