Equity (Changes To Equity) (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016	Dec. 31, 2016
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Noncontrolling interest	$ 616,913		$ 616,913		$ 620,591
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest	5,465,777		5,465,777		5,301,985
Balance at December 31, 2016			4,681,394
Net income (loss)	287,717	$ 87,671	324,008	$ (261,409)
Dividends			(176,519)
Distributions to noncontrolling interest holders			(81,797)
Other comprehensive income (loss), net of tax	12,853	$ 1,953	21,009	11,601
Allocated equity on common unit issuances, net of tax			46,375
Stock Issued During Period, Value, Acquisitions			5,056
Equity-based compensation			26,430
Purchase of treasury stock			(290)
Purchase of units for incentive grants - HEP			(35)
Other			(445)
Balance at September 30, 2017	$ 4,848,864		$ 4,848,864
Shares Paid for Tax Withholding for Share Based Compensation			9,885
Stock Repurchase Program, Number of Shares Authorized to be Repurchased	1,000,000,000		1,000,000,000
Stock Repurchase Program, Remaining Authorized Repurchase Amount	$ 178,800		$ 178,800
Holly Corporation Stockholders' Equity [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Balance at December 31, 2016			4,681,394
Net income (loss)			284,313
Dividends			(176,519)
Distributions to noncontrolling interest holders			0
Other comprehensive income (loss), net of tax			21,066
Allocated equity on common unit issuances, net of tax			9,360
Stock Issued During Period, Value, Acquisitions			5,056
Equity-based compensation			24,484
Purchase of treasury stock			(290)	0
Purchase of units for incentive grants - HEP			0
Other			0
Balance at September 30, 2017	4,848,864		4,848,864
Noncontrolling Interest [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Noncontrolling interest	$ 616,913		616,913		$ 620,591
Net income (loss)			39,695
Dividends			0
Distributions to noncontrolling interest holders			(81,797)
Other comprehensive income (loss), net of tax			(57)
Allocated equity on common unit issuances, net of tax			37,015
Stock Issued During Period, Value, Acquisitions			0
Equity-based compensation			1,946
Purchase of treasury stock			0
Purchase of units for incentive grants - HEP			(35)
Other			(445)
HEP [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Distributions to noncontrolling interest holders			$ (81,797)	$ (66,571)