Other Comprehensive Income (Loss) (Components And Allocated Tax Effects Of Other Comprehensive Income (Loss)) (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013
Other Comprehensive Income (Loss) [Abstract]
Net unrealized gain (loss) on marketable securities	$ (165)	$ 34	$ (129)	$ 5
Net unrealized gain on hedging instruments	(8,441)	4,215	112,957	44,371
Other Comprehensive Income (Loss), Pension and Other Postretirement Benefit Plans, Net Unamortized Gain (Loss) Arising During Period, before Tax	422	0	333	30,712
Other comprehensive income (loss)	(8,184)	4,249	113,161	75,088
Less other comprehensive income attributable to noncontrolling interest	673	(665)	278	2,068
Other Comprehensive Income (Loss) attributable to HollyFrontier stockholders	(8,857)	4,914	112,883	73,020
Other Comprehensive Income (Loss), Available-for-sale Securities, Tax	(64)	13	(50)	2
Net unrealized gain (loss) on hedging instruments, tax expense (benefit)	(3,527)	1,933	43,616	16,473
Net change in post-retirement benefit obligations, tax expense (benefit)	163		128	11,946
Other comprehensive income, tax expense	(3,428)	1,946	43,694	28,421
Other comprehensive income attributable to HollyFrontier stockholders, tax expense (benefit)	(3,428)	1,946	43,694	28,421
Net unrealized gain on marketable securities, after tax	(101)	21	(79)	3
Net unrealized gain (loss) on hedging instruments, after tax	(4,914)	2,282	69,341	27,898
Net Change in Post-retirement Benefit Obligations, After Tax	259		205	18,766
Other comprehensive income, after tax	(4,756)	2,303	69,467	46,667
Less other comprehensive income attributable to noncontrolling interest, after tax	673	(665)	278	2,068
Other comprehensive income (loss) attributable to HollyFrontier stockholders, after tax	$ (5,429)	$ 2,968	$ 69,189	$ 44,599