Equity (Changes To Equity) (Details) (USD $) In Thousands, except Share data, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014		Jun. 30, 2013
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares Paid for Tax Withholding for Share Based Compensation			92,048
Balance at December 31, 2013			$ 5,999,620
Net income	185,153	265,749	349,115		609,120
Other comprehensive income, after tax	20,923	31,813	74,223		44,364
Remaining stock repurchase authorization			311571488
Balance at June 30, 2014	6,073,532		6,073,532
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			328,490
Dividends			(323,121)
Distributions to noncontrolling interest holders			0
Other comprehensive income, after tax			74,618
Equity-based compensation			12,188
Excess tax benefit attributable to equity-based compensation			3,778
Purchase of treasury stock			(22,041)	[1]
Purchase of HEP units for restricted grants			0
Other			0
Balance at June 30, 2014	6,073,532		6,073,532
Noncontrolling Interest [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Balance at December 31, 2013			609,778
Net income			20,625
Dividends			0
Distributions to noncontrolling interest holders			(38,548)
Other comprehensive income, after tax			(395)
Equity-based compensation			1,658
Excess tax benefit attributable to equity-based compensation			0
Purchase of treasury stock			0	[1]
Purchase of HEP units for restricted grants			(406)
Other			375
Balance at June 30, 2014	593,087		593,087
Total Equity [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Balance at December 31, 2013			6,609,398
Net income			349,115
Dividends			(323,121)
Distributions to noncontrolling interest holders			(38,548)
Other comprehensive income, after tax			74,223
Equity-based compensation			13,846
Excess tax benefit attributable to equity-based compensation			3,778
Purchase of treasury stock			(22,041)	[1]
Purchase of HEP units for restricted grants			(406)
Other			375
Balance at June 30, 2014	$ 6,666,619		$ 6,666,619

[1] Includes 92,048 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.