Supplemental Guarantor/Non-Guarantor Financial Information (Consolidating Statement of Income) (Details) (USD $) In Thousands, unless otherwise specified	1 Months Ended		3 Months Ended									12 Months Ended
	Mar. 31, 2014	Jun. 30, 2013	Dec. 31, 2014		Sep. 30, 2014	Jun. 30, 2014	Mar. 31, 2014	Dec. 31, 2013	Sep. 30, 2013	Jun. 30, 2013	Mar. 31, 2013	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Condensed Financial Statements, Captions [Line Items]
Sales and other revenues			$ 4,283,119		$ 5,317,555	$ 5,372,600	$ 4,791,053	$ 4,826,801	$ 5,327,122	$ 5,298,848	$ 4,707,789	$ 19,764,327	$ 20,160,560	$ 20,090,724
Cost of products sold												17,228,385	17,392,227	15,840,643
Lower of cost or market inventory adjustment												397,478	0	0
Operating expenses												1,144,940	1,090,850	994,966
General and administrative												114,609	127,963	128,101
Depreciation and amortization												363,381	303,446	242,868
Total operating costs and expenses			4,637,537		5,014,944	5,076,255	4,520,057	4,739,678	5,177,372	4,838,842	4,158,594	19,248,793	18,914,486	17,206,578
Income (loss) from operations			(354,418)	[1]	302,611	296,345	270,996	87,123	149,750	460,006	549,195	515,534	1,246,074	2,884,146
Earnings (loss) of equity method investments												(2,007)	(2,072)	2,923
Interest income (expense)												(39,216)	(62,494)	(99,400)
Gain (Loss) on Sale of Securities, Net														326
Loss on early extinguishment of debt	7,700	(22,100)										(7,677)	(22,109)	0
Gain on sale of assets												866	0	326
Other income (expense) total												(48,034)	(86,675)	(96,151)
Income before income taxes			(361,335)		290,774	286,485	251,576	74,705	137,437	417,792	529,465	467,500	1,159,399	2,787,995
Income tax provision												141,172	391,576	1,027,962
Net income												326,328	767,823	1,760,033
Less net income attributable to noncontrolling interest												45,036	31,981	32,861
Net income attributable to HollyFrontier stockholders			(222,204)		175,006	176,429	152,061	62,902	82,290	256,981	333,669	281,292	735,842	1,727,172
Comprehensive income attributable to HollyFrontier stockholders												308,364	745,089	1,640,874
Parent
Condensed Financial Statements, Captions [Line Items]
Sales and other revenues												558	878	494
Cost of products sold												0	0	0
Lower of cost or market inventory adjustment												0
Operating expenses												4,660	0	0
General and administrative												98,200	113,231	118,860
Depreciation and amortization												8,041	5,548	4,172
Total operating costs and expenses												110,901	118,779	123,032
Income (loss) from operations												(110,343)	(117,901)	(122,538)
Earnings (loss) of equity method investments												531,542	1,280,868	2,921,077
Interest income (expense)												(2,390)	(15,849)	(41,564)
Gain (Loss) on Sale of Securities, Net														0
Loss on early extinguishment of debt												0	(22,109)
Gain on sale of assets												1,422
Other income (expense) total												530,574	1,242,910	2,879,513
Income before income taxes												420,231	1,125,009	2,756,975
Income tax provision												140,937	391,243	1,027,591
Net income												279,294	733,766	1,729,384
Less net income attributable to noncontrolling interest												0	0	0
Net income attributable to HollyFrontier stockholders												279,294	733,766	1,729,384
Comprehensive income attributable to HollyFrontier stockholders												306,366	743,013	1,643,086
Guarantor Restricted Subsidiaries
Condensed Financial Statements, Captions [Line Items]
Sales and other revenues												19,706,833	20,105,726	20,043,335
Cost of products sold												17,500,601	17,641,119	16,078,948
Lower of cost or market inventory adjustment												397,478
Operating expenses												1,036,911	995,194	906,098
General and administrative												4,914	2,752	1,519
Depreciation and amortization												309,101	247,514	181,735
Total operating costs and expenses												19,249,005	18,886,579	17,168,300
Income (loss) from operations												457,828	1,219,147	2,875,035
Earnings (loss) of equity method investments												66,227	52,752	49,347
Interest income (expense)												8,043	8,969	(3,631)
Gain (Loss) on Sale of Securities, Net														326
Loss on early extinguishment of debt												0	0
Gain on sale of assets												(556)
Other income (expense) total												73,714	61,721	46,042
Income before income taxes												531,542	1,280,868	2,921,077
Income tax provision												0	0	0
Net income												531,542	1,280,868	2,921,077
Less net income attributable to noncontrolling interest												0	0	0
Net income attributable to HollyFrontier stockholders												531,542	1,280,868	2,921,077
Comprehensive income attributable to HollyFrontier stockholders												587,294	1,258,370	2,728,675
Non- Guarantor Restricted Subsidiaries
Condensed Financial Statements, Captions [Line Items]
Sales and other revenues												937	153	174
Cost of products sold												0	0	0
Lower of cost or market inventory adjustment												0
Operating expenses												0	0	0
General and administrative												671	231	128
Depreciation and amortization												7	0	0
Total operating costs and expenses												678	231	128
Income (loss) from operations												259	(78)	46
Earnings (loss) of equity method investments												70,369	57,186	49,066
Interest income (expense)												568	542	676
Gain (Loss) on Sale of Securities, Net														0
Loss on early extinguishment of debt												0	0
Gain on sale of assets												0
Other income (expense) total												70,937	57,728	49,742
Income before income taxes												71,196	57,650	49,788
Income tax provision												0	0	0
Net income												71,196	57,650	49,788
Less net income attributable to noncontrolling interest												(25)	0	0
Net income attributable to HollyFrontier stockholders												71,221	57,650	49,788
Comprehensive income attributable to HollyFrontier stockholders												71,259	59,470	50,610
Eliminations From Consolidation Of Restricted Subsidiaries
Condensed Financial Statements, Captions [Line Items]
Sales and other revenues												0	0	0
Cost of products sold												0	0	0
Lower of cost or market inventory adjustment												0
Operating expenses												0	0	0
General and administrative												0	0	0
Depreciation and amortization												0	0	0
Total operating costs and expenses												0	0	0
Income (loss) from operations												0	0	0
Earnings (loss) of equity method investments												(602,763)	(1,338,518)	(2,970,865)
Interest income (expense)												0	0	0
Gain (Loss) on Sale of Securities, Net														0
Loss on early extinguishment of debt												0	0
Gain on sale of assets												0
Other income (expense) total												(602,763)	(1,338,518)	(2,970,865)
Income before income taxes												(602,763)	(1,338,518)	(2,970,865)
Income tax provision												0	0	0
Net income												(602,763)	(1,338,518)	(2,970,865)
Less net income attributable to noncontrolling interest												0	0	0
Net income attributable to HollyFrontier stockholders												(602,763)	(1,338,518)	(2,970,865)
Comprehensive income attributable to HollyFrontier stockholders												(658,553)	(1,317,840)	(2,779,285)
HollyFrontier Corp. Before Consolidation of HEP
Condensed Financial Statements, Captions [Line Items]
Sales and other revenues												19,708,328	20,106,757	20,044,003
Cost of products sold												17,500,601	17,641,119	16,078,948
Lower of cost or market inventory adjustment												397,478
Operating expenses												1,041,571	995,194	906,098
General and administrative												103,785	116,214	120,507
Depreciation and amortization												317,149	253,062	185,907
Total operating costs and expenses												19,360,584	19,005,589	17,291,460
Income (loss) from operations												347,744	1,101,168	2,752,543
Earnings (loss) of equity method investments												65,375	52,288	48,625
Interest income (expense)												6,221	(6,338)	(44,519)
Gain (Loss) on Sale of Securities, Net														326
Loss on early extinguishment of debt												0	(22,109)
Gain on sale of assets												866
Other income (expense) total												72,462	23,841	4,432
Income before income taxes												420,206	1,125,009	2,756,975
Income tax provision												140,937	391,243	1,027,591
Net income												279,269	733,766	1,729,384
Less net income attributable to noncontrolling interest												(25)	0	0
Net income attributable to HollyFrontier stockholders												279,294	733,766	1,729,384
Comprehensive income attributable to HollyFrontier stockholders												306,366	743,013	1,643,086
Non-Guarantor Non-Restricted Subsidiaries (HEP Segment)
Condensed Financial Statements, Captions [Line Items]
Sales and other revenues												332,626	307,053	288,501
Cost of products sold												0	0	0
Lower of cost or market inventory adjustment												0
Operating expenses												104,801	97,081	89,395
General and administrative												10,824	11,749	7,594
Depreciation and amortization												60,548	64,701	57,789
Total operating costs and expenses												176,173	173,531	154,778
Income (loss) from operations												156,453	133,522	133,723
Earnings (loss) of equity method investments												2,987	2,826	3,364
Interest income (expense)												(36,098)	(46,849)	(57,219)
Gain (Loss) on Sale of Securities, Net														0
Loss on early extinguishment of debt												(7,677)	0
Gain on sale of assets												0
Other income (expense) total												(40,788)	(44,023)	(53,855)
Income before income taxes												115,665	89,499	79,868
Income tax provision												235	333	371
Net income												115,430	89,166	79,497
Less net income attributable to noncontrolling interest												8,288	6,632	1,153
Net income attributable to HollyFrontier stockholders												107,142	82,534	78,344
Comprehensive income attributable to HollyFrontier stockholders												107,181	84,354	79,166
Consolidations and Eliminations
Condensed Financial Statements, Captions [Line Items]
Sales and other revenues												(276,627)	(253,250)	(241,780)
Cost of products sold												(272,216)	(248,892)	(238,305)
Lower of cost or market inventory adjustment												0
Operating expenses												(1,432)	(1,425)	(527)
General and administrative												0	0	0
Depreciation and amortization												(14,316)	(14,317)	(828)
Total operating costs and expenses												(287,964)	(264,634)	(239,660)
Income (loss) from operations												11,337	11,384	(2,120)
Earnings (loss) of equity method investments												(70,369)	(57,186)	(49,066)
Interest income (expense)												(9,339)	(9,307)	2,338
Gain (Loss) on Sale of Securities, Net														0
Loss on early extinguishment of debt												0	0
Gain on sale of assets												0
Other income (expense) total												(79,708)	(66,493)	(46,728)
Income before income taxes												(68,371)	(55,109)	(48,848)
Income tax provision												0	0	0
Net income												(68,371)	(55,109)	(48,848)
Less net income attributable to noncontrolling interest												36,773	25,349	31,708
Net income attributable to HollyFrontier stockholders												(105,144)	(80,458)	(80,556)
Comprehensive income attributable to HollyFrontier stockholders												$ (105,183)	$ (82,278)	$ (81,378)

[1] (1) Loss from operations for the fourth quarter of 2014 reflects a non-cash lower of cost or market inventory valuation charge of $397.5 million.