Equity (Changes To Equity) (Details) (USD $)	3 Months Ended		9 Months Ended
	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014		Sep. 30, 2013
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares Paid for Tax Withholding for Share Based Compensation			92,048
Authorized share repurchase			$ 500,000,000
Balance at December 31, 2013			5,999,620,000
Net income	187,558,000	88,909,000	536,673,000		698,029,000
Other comprehensive income, after tax	(4,756,000)	2,303,000	69,467,000		46,667,000
Payments for Repurchase of Common Stock			133,150,000		184,947,000
Balance at September 30, 2014	5,974,157,000		5,974,157,000
Remaining stock repurchase authorization			467843450
Holly Corporation Stockholders' Equity [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Balance at December 31, 2013			5,999,620,000
Net income			503,496,000
Dividends			(485,803,000)
Distributions to noncontrolling interest holders			0
Other comprehensive income, after tax			69,189,000
Equity-based compensation			18,235,000
Excess tax benefit attributable to equity-based compensation			4,482,000
Payments for Repurchase of Common Stock			(135,062,000)	[1]
Purchase of HEP units for restricted grants			0
Other			0
Balance at September 30, 2014	5,974,157,000		5,974,157,000
Noncontrolling Interest [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Balance at December 31, 2013			609,778,000
Net income			33,177,000
Dividends			0
Distributions to noncontrolling interest holders			(58,473,000)
Other comprehensive income, after tax			278,000
Equity-based compensation			2,493,000
Excess tax benefit attributable to equity-based compensation			0
Payments for Repurchase of Common Stock			0	[1]
Purchase of HEP units for restricted grants			(1,064,000)
Other			502,000
Balance at September 30, 2014	586,691,000		586,691,000
Total Equity [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Balance at December 31, 2013			6,609,398,000
Net income			536,673,000
Dividends			(485,803,000)
Distributions to noncontrolling interest holders			(58,473,000)
Other comprehensive income, after tax			69,467,000
Equity-based compensation			20,728,000
Excess tax benefit attributable to equity-based compensation			4,482,000
Payments for Repurchase of Common Stock			(135,062,000)	[1]
Purchase of HEP units for restricted grants			(1,064,000)
Other			502,000
Balance at September 30, 2014	$ 6,560,848,000		$ 6,560,848,000

[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.