Debt (Carrying Amounts Of Long-Term Debt) (Details) (USD $)	3 Months Ended
	Mar. 31, 2014	Mar. 31, 2013	Dec. 31, 2013
Debt Instrument [Line Items]
Total long-term debt	$ 1,023,057,000		$ 997,519,000
Capitalized interest attributable to construction projects	3,000,000	3,400,000
Holly Corporation [Member]
Debt Instrument [Line Items]
Total long-term debt	189,267,000		189,889,000
6.875% Senior Notes Due 2018 [Member]
Debt Instrument [Line Items]
Principal	150,000,000		150,000,000
Unamortized Premium	4,830,000		5,054,000
Long-term debt carrying amount	154,830,000		155,054,000
Holly Financing Obligation [Member]
Debt Instrument [Line Items]
Financing obligation	34,437,000		34,835,000
HEP [Member]
Debt Instrument [Line Items]
Total HEP long-term debt	833,790,000		807,630,000
Total long-term debt	833,790,000		807,630,000
HEP [Member] | Holly Energy Partners Credit Agreement [Member]
Debt Instrument [Line Items]
HEP Credit Agreement	537,700,000		363,000,000
HEP [Member] | 8.25% Senior Notes Due 2018 [Member]
Debt Instrument [Line Items]
Principal	0		150,000,000
Unamortized discount	0		(1,297,000)
Long-term debt carrying amount	0		148,703,000
HEP [Member] | 6.5% Senior Notes Due 2020 [Member]
Debt Instrument [Line Items]
Principal	300,000,000		300,000,000
Unamortized discount	(3,910,000)		(4,073,000)
Long-term debt carrying amount	$ 296,090,000		$ 295,927,000