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Organization (Details)
1 Months Ended 3 Months Ended 6 Months Ended
Jun. 30, 2016
mi
shares
bbl
May 31, 2016
shares
Dec. 31, 2015
USD ($)
Jun. 30, 2016
operating_segments
mi
bbl
Oct. 30, 2015
bbl
Business Acquisition [Line Items]          
Pipeline, Miles | mi 685     685  
Active Storage Capacity | bbl 8,400,000     8,400,000  
Segment Reporting, Number of Business Segments | operating_segments       2  
Pipelines and related assets | TexNew Mex 16 inch pipeline [Member]          
Business Acquisition [Line Items]          
Active Storage Capacity | bbl         80,000
Common Units [Member]          
Business Acquisition [Line Items]          
Partners' Capital Account, Units, Sold in Public Offering | shares 562,500 3,750,000      
TexNew Mex 16 inch pipeline [Member]          
Business Acquisition [Line Items]          
Payments to Acquire Businesses, Gross     $ 170,000,000    
TexNew Mex 16 inch pipeline [Member] | Common Units [Member]          
Business Acquisition [Line Items]          
Business Combination, Consideration Transferred, Equity Interests Issued and Issuable     421,031    
TexNew Mex 16 inch pipeline [Member] | TexNew Mex Units [Member]          
Business Acquisition [Line Items]          
Business Combination, Consideration Transferred, Equity Interests Issued and Issuable     $ 80,000    
Western Refining, Inc. [Member]          
Business Acquisition [Line Items]          
Limited Liability Company (LLC) or Limited Partnership (LP), Managing Member or General Partner, Ownership Interest       100.00%  
Limited Liability Company (LLC) or Limited Partnership (LP), Members or Limited Partners, Ownership Interest       60.80%  
Investor [Member]          
Business Acquisition [Line Items]          
Limited Liability Company (LLC) or Limited Partnership (LP), Members or Limited Partners, Ownership Interest       39.20%