Other Comprehensive Income (Loss) (Components And Allocated Tax Effects Of Other Comprehensive Income (Loss)) (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2016	Jun. 30, 2015	Jun. 30, 2016	Jun. 30, 2015
Other Comprehensive Income (Loss) Components and Tax Effects [Line Items]
Net Unrealized Gain (Loss) on Marketable Securities	$ 12	$ (63)	$ 113	$ 5
Net unrealized gain (loss) on hedging instruments	16,900	(5,809)	15,852	(25,128)
Other comprehensive income (loss)	16,912	(5,872)	15,965	(25,123)
Less other comprehensive income attributable to noncontrolling interest	(85)	135	(360)	(319)
Other comprehensive income (loss) attributable to HollyFrontier stockholders	16,997	(6,007)	16,325	(24,804)
Net Unrealized Gain (loss) on Marketable Securities, Tax	4	(25)	44	2
Net unrealized gain (loss) on hedging instruments, tax expense (benefit)	6,574	(2,300)	6,273	(9,602)
Other comprehensive income, tax expense	6,578	(2,325)	6,317	(9,600)
Other comprehensive income (loss) attributable to HollyFrontier stockholders, tax expense	6,578	(2,325)	6,317	(9,600)
Net unrealized gain (loss) on marketable securities, after tax	8	(38)	69	3
Net unrealized gain (loss) on hedging instruments, after tax	10,326	(3,509)	9,579	(15,526)
Other comprehensive income (loss), net of tax	10,334	(3,547)	9,648	(15,523)
Less other comprehensive income attributable to noncontrolling interest, after tax	(85)	135	(360)	(319)
Other comprehensive income (loss) attributable to HollyFrontier stockholders	$ 10,419	$ (3,682)	$ 10,008	$ (15,204)