Other Comprehensive Income (Loss) (Components And Allocated Tax Effects Of Other Comprehensive Income (Loss)) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Other Comprehensive Income (Loss), before Tax [Abstract]
Other Comprehensive Income (Loss), Unrealized Holding Gain (Loss) on Securities Arising During Period, before Tax	$ 38	$ (157)	$ 34
Net Unrealized gain (loss) on available-for-sale securities, Tax Expense (Benefit)	14	(62)	17
Net unrealized gain (loss) on available-for-sale securities, After-Tax	24	(95)	17
Net Unrealized Gain (Loss) on Hedging Activities, Before-Tax	(52,259)	55,812	(20,183)
Net Unrealized Gain (Loss) on Hedging Activities, Tax	(20,282)	21,583	(8,669)
Net Unrealized Gain (Loss) on Hedging Activities, Net of Tax	(31,977)	34,229	(11,514)
Other Comprehensive (Income) Loss, Pension and Other Postretirement Benefit Plans, Adjustment, before Tax	79	(11,425)	37,593
Other Comprehensive (Income) Loss, Pension and Other Postretirement Benefit Plans, Tax	31	(4,423)	14,534
Other Comprehensive (Income) Loss, Pension and Other Postretirement Benefit Plans, Adjustment, Net of Tax	48	(7,002)	23,059
Other comprehensive income (loss) before income taxes	(52,142)	44,230	17,444
Other comprehensive income (loss), Tax Expense (Benefit)	(20,237)	17,098	5,882
Other comprehensive income (loss)	(31,905)	27,132	11,562
Less other comprehensive income (loss) attributable to noncontrolling interest, Before-Tax	144	60	2,315
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	144	60	2,315
Other comprehensive income (loss) attributable to HollyFrontier stockholders, Before-Tax	(52,286)	44,170	15,129
Other comprehensive income (loss) attributable to HollyFrontier stockholders, Tax Expense (Benefit)	(20,237)	17,098	5,882
Other comprehensive income (loss) attributable to HollyFrontier stockholders, After-Tax	$ (32,049)	$ 27,072	$ 9,247