Equity (Changes To Equity) (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended		9 Months Ended
	Jun. 30, 2016	Jun. 30, 2015	Jun. 30, 2016	Jun. 30, 2015	Sep. 30, 2015	Dec. 31, 2015
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest	$ 5,197,910		$ 5,197,910			$ 5,809,773
Balance at December 31, 2015			5,253,415
Net income (loss)	(392,470)	$ 373,187	(349,080)	$ 615,848
Dividends			(116,795)
Distributions to noncontrolling interest holders			(43,840)
Other comprehensive income (loss), net of tax	10,334	(3,547)	9,648	(15,523)
Allocated equity on common unit issuances, net of tax			12,778
Equity-based compensation			9,774
Tax attributable to equity-based compensation			(4,198)
Purchase of treasury stock			129,384
Purchase of units for incentive grants - HEP			(784)
Other			18
Balance at June 30, 2016	$ 4,636,374		$ 4,636,374
Shares Paid for Tax Withholding for Share Based Compensation			124
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
Accelerated Share Repurchases, Settlement (Payment) or Receipt		$ 300,000		300,000
Accelerated Stock Repurchase Forward Contract			0	$ 60,000
Treasury Stock, Shares, Acquired				5,500,000	1,200,000
Share Repurchase Percent of Market Value				80.00%
Holly Corporation Stockholders' Equity [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Balance at December 31, 2015			5,253,415
Net income (loss)			(388,115)
Dividends			(116,795)
Distributions to noncontrolling interest holders			0
Other comprehensive income (loss), net of tax			10,008
Allocated equity on common unit issuances, net of tax			2,862
Equity-based compensation			8,581
Tax attributable to equity-based compensation			(4,198)
Purchase of treasury stock			129,384
Purchase of units for incentive grants - HEP			0
Other			0
Balance at June 30, 2016	4,636,374		4,636,374
Noncontrolling Interest [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Balance at December 31, 2015			556,358
Net income (loss)			39,035
Dividends			0
Other comprehensive income (loss), net of tax			(360)
Allocated equity on common unit issuances, net of tax			9,916
Equity-based compensation			1,193
Tax attributable to equity-based compensation			0
Purchase of treasury stock			0
Purchase of units for incentive grants - HEP			(784)
Other			18
Balance at June 30, 2016	$ 561,536		561,536
HEP [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Distributions to noncontrolling interest holders			$ (43,840)	$ (41,596)