Equity (Changes To Equity) (Details) (USD $) In Thousands, except Share data, unless otherwise specified	3 Months Ended
	Mar. 31, 2014		Mar. 31, 2013
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares Paid for Tax Withholding for Share Based Compensation	90,393
Balance at December 31, 2013	$ 5,999,620
Net income	163,962		343,371
Other comprehensive income, after tax	53,300		12,551
Balance at March 31, 2014	6,045,086
Holly Corporation Stockholders' Equity [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Balance at December 31, 2013	5,999,620
Net income	152,061
Dividends	(159,670)
Distributions to noncontrolling interest holders	0
Other comprehensive income, after tax	53,242
Equity-based compensation	5,366
Excess tax benefit attributable to equity-based compensation	5,156
Purchase of treasury stock	(10,689)	[1]
Purchase of HEP units for restricted grants	0
Other	0
Balance at March 31, 2014	6,045,086
Noncontrolling Interest [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Balance at December 31, 2013	609,778
Net income	11,901
Dividends	0
Distributions to noncontrolling interest holders	(18,881)
Other comprehensive income, after tax	58
Equity-based compensation	820
Excess tax benefit attributable to equity-based compensation	0
Purchase of treasury stock	0	[1]
Purchase of HEP units for restricted grants	336
Other	75
Balance at March 31, 2014	603,415
Total Equity [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Balance at December 31, 2013	6,609,398
Net income	163,962
Dividends	(159,670)
Distributions to noncontrolling interest holders	(18,881)
Other comprehensive income, after tax	53,300
Equity-based compensation	6,186
Excess tax benefit attributable to equity-based compensation	5,156
Purchase of treasury stock	(10,689)	[1]
Purchase of HEP units for restricted grants	336
Other	75
Balance at March 31, 2014	$ 6,648,501

[1] Includes 90,393 shares withheld under the terms of stock-based compensation agreements to provide funds for the payment of payroll and income taxes due at the vesting of share-based awards.