Holly Energy Partners (Details) $ in Thousands	3 Months Ended		9 Months Ended
	Dec. 31, 2015 USD ($)	Sep. 30, 2015 mi	Sep. 30, 2015 USD ($) Customers mi bbl	Sep. 30, 2014 USD ($)
Holly Energy Partners Entity [Line Items]
Payments to Acquire Equity Method Investments			$ (54,641)
Payments to Acquire Property, Plant, and Equipment			416,611	$ 307,476
Frontier Pipeline [Member]
Holly Energy Partners Entity [Line Items]
Payments to Acquire Equity Method Investments			$ (54,600)
Limited Liability Company (LLC) or Limited Partnership (LP), Members or Limited Partners, Ownership Interest			50.00%
Length of pipeline (miles) | mi		289	289
Production barrels per day | bbl			72,000
HEP [Member]
Holly Energy Partners Entity [Line Items]
Percentage of ownership in variable interest entity			39.00%
Percentage of general partner interest			2.00%
Number of primary customers | Customers			2
Percentage of revenue Holly Corp represents			82.00%
Payments to Acquire Equity Method Investments			$ 54,641	0
Payments to Acquire Property, Plant, and Equipment			57,286	$ 61,657
Annual contract payment			$ 236,600
Subsequent Event [Member] | HEP [Member]
Holly Energy Partners Entity [Line Items]
Payments to Acquire Property, Plant, and Equipment	$ 62,000
Annual contract payment	$ 15,300