Consolidated Statements Of Comprehensive Income (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Net income	$ 326,328	$ 767,823	$ 1,760,033
Other comprehensive income (loss):
Unrealized gain (loss) on marketable securities	(153)	73	149
Reclassification adjustment to net income on sale or maturity of marketable securities	(4)	(39)	(385)
Net unrealized gain (loss) on marketable securities	(157)	34	(236)
Change in fair value of cash flow hedging instruments	105,414	(7,614)	(252,817)
Reclassification adjustments to net income on settlement of cash flow hedging instruments	(50,682)	(14,318)	56,683
Amortization of unrealized loss attributable to discontinued cash flow hedges	1,080	1,749	5,095
Net unrealized gain (loss) on hedging instruments	55,812	(20,183)	(191,039)
Loss on pension plan	0	0	(3,485)
Pension plan loss reclassified to net income	0	37,589	1,956
Gain (loss) on post-retirement healthcare plan	(7,434)	3,301	55,402
Post-retirement Healthcare Plan Gain Reclassified to Net Income	(4,296)	(4,040)	(1,952)
Gain (loss) on retirement restoration plan	(615)	632	(593)
Retirement restoration loss reclassified to net income	920	111	63
Net change in pension and other post-retirement benefit obligations	(11,425)	37,593	51,391
Other comprehensive income (loss) before income taxes	44,230	17,444	(139,884)
Income tax expense (benefit)	17,098	5,882	(54,950)
Other comprehensive income (loss)	27,132	11,562	(84,934)
Total comprehensive income	353,460	779,385	1,675,099
Less noncontrolling interest in comprehensive income	45,096	34,296	34,225
Comprehensive income attributable to HollyFrontier stockholders	$ 308,364	$ 745,089	$ 1,640,874