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Equity (Details) - USD ($)
$ in Billions
1 Months Ended 6 Months Ended
Oct. 31, 2014
Jun. 30, 2015
Dec. 31, 2014
Capital Unit [Line Items]      
Equity and Debt, Aggregate Value   $ 1  
Public [Member]      
Capital Unit [Line Items]      
Limited Liability Company (LLC) or Limited Partnership (LP), Members or Limited Partners, Ownership Interest   33.90%  
Public [Member] | Common Units [Member]      
Capital Unit [Line Items]      
Limited Partners' Capital Account, Units Outstanding   15,858,156 15,823,408
Western Refining, Inc. [Member]      
Capital Unit [Line Items]      
Limited Liability Company (LLC) or Limited Partnership (LP), Members or Limited Partners, Ownership Interest 66.20% 66.10%  
Western Refining, Inc. [Member] | Common Units [Member]      
Capital Unit [Line Items]      
Limited Partners' Capital Account, Units Outstanding   8,158,592 8,158,592
Western Refining, Inc. [Member] | Subordinated Units [Member]      
Capital Unit [Line Items]      
Limited Partners' Capital Account, Units Outstanding   22,811,000 22,811,000
Phantom Share Units (PSUs) [Member] | WNRL 2013 LTIP [Member]      
Capital Unit [Line Items]      
Share-based Compensation Arrangement by Share-based Payment Award, Shares Issued in Period   34,748