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, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016
Other Comprehensive Income (Loss) Components and Tax Effects [Line Items]
Other Comprehensive Income (Loss), Foreign Currency Translation Adjustment, before Tax	$ 14,298	$ 0	$ 7,585	$ 0
Net Unrealized Gain (Loss) on Marketable Securities		12	(4)	113
Net unrealized gain on hedging instruments	1,232	16,900	5,276	15,852
Other comprehensive income (loss)	15,530	16,912	12,857	15,965
Less other comprehensive income attributable to noncontrolling interest	(67)	(85)	(17)	(360)
Other comprehensive income (loss) attributable to HollyFrontier stockholders	15,597	16,997	12,874	16,325
Other Comprehensive Income (Loss), Foreign Currency Translation Gain (Loss) Arising During Period, Tax	4,433		2,654
Net Unrealized Gain (loss) on Marketable Securities, Tax Expense (Benefit)		4	(1)	44
Net unrealized gain (loss) on hedging instruments, tax expense (benefit)	503	6,574	2,048	6,273
Other comprehensive income (loss), tax expense	4,936	6,578	4,701	6,317
Other comprehensive income (loss) attributable to HollyFrontier stockholders, tax expense	4,936	6,578	4,701	6,317
Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Gain (Loss) Arising During Period, Net of Tax	9,865		4,931
Net unrealized gain (loss) on marketable securities, after tax		8	(3)	69
Net unrealized gain (loss) on hedging instruments, after tax	729	10,326	3,228	9,579
Other comprehensive income (loss), net of tax	10,594	10,334	8,156	9,648
Less other comprehensive income (loss) attributable to noncontrolling interest, after tax	(67)	(85)	(17)	(360)
Other comprehensive income (loss) attributable to HollyFrontier stockholders	$ 10,661	$ 10,419	$ 8,173	$ 10,008