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Equity-Based Compensation (Details) (WNRL 2013 LTIP [Member], USD $)
In Millions, except Share data, unless otherwise specified
3 Months Ended
Mar. 31, 2014
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]  
Common Stock, Capital Shares Reserved for Future Issuance 4,288,117
Allocated Share-based Compensation Expense $ 0.2
Phantom Share Units (PSUs) [Member]
 
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]  
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Total Weighted Average Grant Date Fair Value 5.8
Employee Service Share-based Compensation, Nonvested Awards, Compensation Cost Not yet Recognized $ 5.5
Employee Service Share-based Compensation, Nonvested Awards, Compensation Cost Not yet Recognized, Period for Recognition 4 years 10 months 14 days