Holly Energy Partners (Details) (USD $) In Millions, except Share data, unless otherwise specified	3 Months Ended	9 Months Ended
	Sep. 30, 2013	Sep. 30, 2014 Customers
Variable Interest Entity [Line Items]
Sale of Stock, Number of Shares Issued in Transaction	1,875,000
Proceeds from Issuance of Common Stock	$ 73.4
HEP [Member]
Variable Interest Entity [Line Items]
Percentage of general partner interest		2.00%
Number of primary customers		2
Percentage of revenue Holly Corp represents		84.00%
Percentage of ownership in variable interest entity		39.00%
Annual contract payment		$ 236.2
Sale of Stock, Number of Shares Issued in Transaction	1,875,000