Debt (Carrying Amounts Of Long-Term Debt) (Details) (USD $) In Thousands, unless otherwise specified	Jun. 30, 2014	Dec. 31, 2013
Debt Instrument [Line Items]
Total long-term debt	$ 1,027,885	$ 997,519
Holly Corporation [Member]
Debt Instrument [Line Items]
Total long-term debt	188,632	189,889
6.875% Senior Notes Due 2018 [Member]
Debt Instrument [Line Items]
Principal	150,000	150,000
Unamortized Premium	4,606	5,054
Long-term debt carrying amount	154,606	155,054
Holly Financing Obligation [Member]
Debt Instrument [Line Items]
Financing obligation	34,026	34,835
HEP [Member]
Debt Instrument [Line Items]
Total HEP long-term debt	839,253	807,630
Total long-term debt	839,253	807,630
HEP [Member] | Holly Energy Partners Credit Agreement [Member]
Debt Instrument [Line Items]
HEP Credit Agreement	543,000	363,000
HEP [Member] | 8.25% Senior Notes Due 2018 [Member]
Debt Instrument [Line Items]
Principal	0	150,000
Unamortized discount	0	(1,297)
Long-term debt carrying amount	0	148,703
HEP [Member] | 6.5% Senior Notes Due 2020 [Member]
Debt Instrument [Line Items]
Principal	300,000	300,000
Unamortized discount	(3,747)	(4,073)
Long-term debt carrying amount	$ 296,253	$ 295,927