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Supplemental Guarantor/Non-Guarantor Financial Information (Narrative) (Details)
9 Months Ended 3 Months Ended
Sep. 30, 2013
HEP [Member]
Sep. 30, 2013
UNEV Pipeline [Member]
Guarantor Obligations [Line Items]    
Percentage of ownership in variable interest entity 39.00%  
Percentage of interest owned In pipeline project   75.00%