Other Comprehensive Income (Loss) (Components And Allocated Tax Effects Of Other Comprehensive Income (Loss)) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Other Comprehensive Income (Loss), before Tax [Abstract]
Net unrealized gain (loss) on marketable securities, before tax	$ 104	$ 38	$ (157)
Net Unrealized gain (loss) on available-for-sale securities, tax expense (benefit)	40	14	(62)
Net unrealized gain (loss) on available-for-sale securities, after-tax	64	24	(95)
Net Unrealized Gain (Loss) on Hedging Activities, Before-Tax	25,040	(52,259)	55,812
Net Unrealized Gain (Loss) on Hedging Activities, Tax	9,713	(20,282)	21,583
Net Unrealized Gain (Loss) on Hedging Activities, Net of Tax	15,327	(31,977)	34,229
Net change in other post-retirement benefit obligations, before tax	(1,113)	79	(11,425)
Net change in other post-retirement benefit obligations, tax	(431)	31	(4,423)
Net change in other post-retirement benefit obligations, after tax	(682)	48	(7,002)
Other comprehensive income (loss) before income taxes	24,031	(52,142)	44,230
Other comprehensive income (loss), Tax Expense (Benefit)	9,322	(20,237)	17,098
Other comprehensive income (loss)	14,709	(31,905)	27,132
Less other comprehensive income (loss) attributable to noncontrolling interest, Before-Tax	(58)	144	60
Less other comprehensive income (loss) attributable to noncontrolling interest, Tax Expense (Benefit)	0	0	0
Less other comprehensive income (loss) attributable to noncontrolling interest, After-Tax	(58)	144	60
Other comprehensive income (loss) attributable to HollyFrontier stockholders, Before-Tax	24,089	(52,286)	44,170
Other comprehensive income (loss) attributable to HollyFrontier stockholders, Tax Expense (Benefit)	9,322	(20,237)	17,098
Other comprehensive income (loss) attributable to HollyFrontier stockholders, After-Tax	$ 14,767	$ (32,049)	$ 27,072