HF Sinclair 10-Q 5 Aug 15 2015 Q2 Quarterly report Financial data

Document And Entity Information

Document And Entity Information - shares	6 Months Ended
	Jun. 30, 2015	Jul. 31, 2015
Document And Entity Information [Abstract]
Entity Registrant Name	HollyFrontier Corp
Entity Central Index Key	48,039
Current Fiscal Year End Date	--12-31
Entity Filer Category	Large Accelerated Filer
Document Type	10-Q
Document Period End Date	Jun. 30, 2015
Document Fiscal Year Focus	2,015
Document Fiscal Period Focus	Q2
Amendment Flag	false
Entity Common Stock, Shares Outstanding		188,563,410

Consolidated Balance Sheets (Un

Consolidated Balance Sheets (Unaudited) - USD ($) $ in Thousands	Jun. 30, 2015	Dec. 31, 2014
Current assets:
Cash and cash equivalents (HEP: $10,424 and $2,830, respectively)	$ 233,359	$ 567,985
Marketable securities	392,859	474,110
Total cash, cash equivalents and short-term marketable securities	626,218	1,042,095
Accounts receivable: Product and transportation (HEP: $40,044 and $40,129, respectively)	594,960	507,040
Crude oil resales	31,147	82,865
Accounts receivable, total	626,107	589,905
Inventories: Crude oil and refined products	1,062,630	920,104
Materials and supplies (HEP: $1,934 and $1,940, respectively)	127,288	115,027
Inventories, total	1,189,918	1,035,131
Income taxes receivable	8,351	11,719
Prepayments and other (HEP: $2,804 and $2,443, respectively)	68,945	104,148
Total current assets	2,519,539	2,782,998
Properties, plants and equipment, at cost (HEP: $1,313,924 and $1,269,161, respectively)	5,156,745	4,852,441
Less accumulated depreciation (HEP: $(270,949) and $(244,850), respectively)	(1,288,350)	(1,181,902)
Properties, plants and equipment, net	3,868,395	3,670,539
Turnaround costs	251,901	257,153
Goodwill (HEP: $288,991 and $288,991, respectively)	2,331,781	2,331,781
Intangibles and other (HEP: $71,897 and $73,928, respectively)	173,670	188,169
Other assets, total	2,757,352	2,777,103
Total assets	9,145,286	9,230,640
Current liabilities:
Accounts payable (HEP: $16,128 and $17,881, respectively)	1,050,392	1,108,138
Income taxes payable	7,569	19,642
Accrued liabilities (HEP: $25,885 and $26,321, respectively)	113,246	106,214
Deferred income tax liabilities	69,284	17,409
Total current liabilities	1,240,491	1,251,403
Long-term debt (HEP: $900,905 and $867,579, respectively)	933,162	1,054,890
Deferred income taxes (HEP: $332 and $367, respectively)	627,537	646,870
Other long-term liabilities (HEP: $56,283 and $47,170, respectively)	176,141	176,758
HollyFrontier stockholders' equity:
Preferred stock, $1.00 par value - 5,000,000 shares authorized; none issued	0	0
Common stock $.01 par value - 320,000,000 shares authorized; 255,962,866 shares issued as of June 30, 2015 and December 31, 2014	2,560	2,560
Additional capital	3,956,289	4,003,628
Retained earnings	3,241,085	2,778,577
Accumulated other comprehensive income	12,690	27,894
Common stock held in treasury, at cost - 67,397,641 and 59,876,776 shares as of June 30, 2015 and December 31, 2014, respectively	(1,609,565)	(1,289,075)
Total HollyFrontier stockholders' equity	5,603,059	5,523,584
Noncontrolling interest	564,896	577,135
Total equity	6,167,955	6,100,719
Total liabilities and equity	9,145,286	9,230,640
HEP [Member]
Current assets:
Cash and cash equivalents (HEP: $10,424 and $2,830, respectively)	10,424	2,830
Total cash, cash equivalents and short-term marketable securities	10,424	2,830
Accounts receivable: Product and transportation (HEP: $40,044 and $40,129, respectively)	40,044	40,129
Materials and supplies (HEP: $1,934 and $1,940, respectively)	1,934	1,940
Prepayments and other (HEP: $2,804 and $2,443, respectively)	2,804	2,443
Properties, plants and equipment, at cost (HEP: $1,313,924 and $1,269,161, respectively)	1,313,924	1,269,161
Less accumulated depreciation (HEP: $(270,949) and $(244,850), respectively)	(270,949)	(244,850)
Goodwill (HEP: $288,991 and $288,991, respectively)	288,991	288,991
Intangibles and other (HEP: $71,897 and $73,928, respectively)	71,897	73,928
Total assets	1,459,069	1,434,572
Current liabilities:
Accounts payable (HEP: $16,128 and $17,881, respectively)	16,128	17,881
Accrued liabilities (HEP: $25,885 and $26,321, respectively)	25,885	26,321
Long-term debt (HEP: $900,905 and $867,579, respectively)	900,905	867,579
Deferred income taxes (HEP: $332 and $367, respectively)	332	367
Other long-term liabilities (HEP: $56,283 and $47,170, respectively)	$ 56,283	$ 47,170

Consolidated Balance Sheets (Pa

Consolidated Balance Sheets (Parenthetical) - USD ($) $ in Thousands	Jun. 30, 2015	Dec. 31, 2014
Cash and cash equivalents (HEP: $10,424 and $2,830, respectively)	$ 233,359	$ 567,985
Accounts receivable Product and transportation	594,960	507,040
Materials and supplies (HEP: $1,934 and $1,940, respectively)	127,288	115,027
Prepayments and other (HEP: $2,804 and $2,443, respectively)	68,945	104,148
Property, Plant and Equipment, Gross	5,156,745	4,852,441
Accumulated Depreciation, Depletion and Amortization, Property, Plant, and Equipment	1,288,350	1,181,902
Goodwill	2,331,781	2,331,781
Intangibles and other	173,670	188,169
Accounts payable (HEP: $16,128 and $17,881, respectively)	1,050,392	1,108,138
Accrued liabilities (HEP: $25,885 and $26,321, respectively)	113,246	106,214
Long-term debt (HEP: $900,905 and $867,579, respectively)	933,162	1,054,890
Deferred income taxes (HEP: $332 and $367, respectively)	627,537	646,870
Other long-term liabilities (HEP: $56,283 and $47,170, respectively)	$ 176,141	$ 176,758
HollyFrontier Stockholders' Equity:
Common stock, par value	$ 0.01	$ 0.01
Common stock, shares authorized	320,000,000	320,000,000
Common stock, shares issued	255,962,866	255,962,866
Preferred stock, par value	$ 1	$ 1
Preferred stock, shares authorized	5,000,000	5,000,000
Preferred stock, shares issued	0	0
Treasury stock, shares	67,397,641	59,876,776
HEP [Member]
Cash and cash equivalents (HEP: $10,424 and $2,830, respectively)	$ 10,424	$ 2,830
Accounts receivable Product and transportation	40,044	40,129
Materials and supplies (HEP: $1,934 and $1,940, respectively)	1,934	1,940
Prepayments and other (HEP: $2,804 and $2,443, respectively)	2,804	2,443
Property, Plant and Equipment, Gross	1,313,924	1,269,161
Accumulated Depreciation, Depletion and Amortization, Property, Plant, and Equipment	270,949	244,850
Goodwill	288,991	288,991
Intangibles and other	71,897	73,928
Accounts payable (HEP: $16,128 and $17,881, respectively)	16,128	17,881
Accrued liabilities (HEP: $25,885 and $26,321, respectively)	25,885	26,321
Long-term debt (HEP: $900,905 and $867,579, respectively)	900,905	867,579
Deferred income taxes (HEP: $332 and $367, respectively)	332	367
Other long-term liabilities (HEP: $56,283 and $47,170, respectively)	$ 56,283	$ 47,170

Consolidated Statements Of Inco

Consolidated Statements Of Income (Unaudited) - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014
Sales and other revenues	$ 3,701,912	$ 5,372,600	$ 6,708,538	$ 10,163,653
Operating costs and expenses:
Cost of products sold (exclusive of depreciation and amortization)	2,887,475	4,674,846	5,138,848	8,813,466
Lower of cost or market inventory valuation adjustment	(135,480)	0	(142,026)	0
Costs of products sold, net	2,751,995	4,674,846	4,996,822	8,813,466
Operating expenses (exclusive of depreciation and amortization)	246,165	271,654	509,761	545,620
General and Administrative Expense	26,117	28,365	55,686	55,288
Depreciation and amortization	87,803	101,390	167,815	181,938
Total operating costs and expenses	3,112,080	5,076,255	5,730,084	9,596,312
Income from operations	589,832	296,345	978,454	567,341
Other income (expense):
Earnings (loss) of equity method investments	631	(908)	(7,176)	(1,709)
Interest income	768	1,184	1,730	2,589
Interest expense	(10,559)	(10,136)	(20,713)	(22,483)
Loss on early extinguishment of debt	(1,368)	0	(1,368)	(7,677)
Gain on sale of assets	873	0	1,639	0
Other income (expense) total	(9,655)	(9,860)	(25,888)	(29,280)
Income before income taxes	580,177	286,485	952,566	538,061
Income tax provision:
Current	155,377	109,171	294,575	202,464
Deferred	51,613	(7,839)	42,143	(13,518)
Income tax provision total	206,990	101,332	336,718	188,946
Net income	373,187	185,153	615,848	349,115
Less net income attributable to noncontrolling interest	12,363	8,724	28,148	20,625
Net income attributable to HollyFrontier stockholders	$ 360,824	$ 176,429	$ 587,700	$ 328,490
Earnings per share attributable to HollyFrontier stockholders:
Basic	$ 1.88	$ 0.89	$ 3.03	$ 1.65
Diluted	1.88	0.89	3.03	1.65
Cash dividends declared per common share	$ 0.33	$ 0.82	$ 0.65	$ 1.62
Average number of common shares outstanding:
Basic	191,355	198,139	193,202	198,217
Diluted	191,454	198,380	193,279	198,408

Consolidated Statements Of Comp

Consolidated Statements Of Comprehensive Income (Unaudited) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014
Net income	$ 373,187	$ 185,153	$ 615,848	$ 349,115
Other comprehensive income (loss)
Unrealized gain (loss) on marketable securities	(57)	25	51	37
Reclassification adjustments to net income on sale or maturity of marketable securities	(6)	0	(46)	(1)
Net unrealized gain (loss) on marketable securities	(63)	25	5	36
Change in fair value of cash flow hedging instruments	8,195	46,689	(7,233)	138,724
Reclassification adjustments to net income on settlement of cash flow hedging instruments	(14,274)	(12,644)	(18,435)	(17,866)
Amortization of unrealized loss attributable to discontinued cash flow hedges	270	270	540	540
Net unrealized gain (loss) on hedging instruments	(5,809)	34,315	(25,128)	121,398
Net change in pension and other post-retirement benefit obligation	0	0	0	(89)
Other comprehensive income (loss) before income taxes	(5,872)	34,340	(25,123)	121,345
Income tax expense (benefit)	(2,325)	13,417	(9,600)	47,122
Other comprehensive income (loss)	(3,547)	20,923	(15,523)	74,223
Total comprehensive income	369,640	206,076	600,325	423,338
Less noncontrolling interest in comprehensive income	12,498	8,271	27,829	20,230
Comprehensive income attributable to HollyFrontier stockholders	$ 357,142	$ 197,805	$ 572,496	$ 403,108

Consolidated Statements Of Cash

Consolidated Statements Of Cash Flows (Unaudited) - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014
Cash flows from operating activities:
Net income	$ 615,848	$ 349,115
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	167,815	181,938
Lower of cost or market inventory valuation adjustment	(142,026)	0
Net loss of equity method investments, inclusive of distributions	8,739	3,082
Gain on sale of assets	(1,639)	0
(Gain) loss on early extinguishment of debt attributable to unamortized discount	(3,788)	1,489
Deferred income taxes	42,143	(13,518)
Equity based compensation expense	14,222	13,846
Change in fair value - derivative instruments	5,841	486
(Increase) decrease in current assets:
Accounts receivable	(35,737)	(81,399)
Inventories	(12,761)	(150,585)
Income taxes receivable	3,368	90,501
Prepayments and other	10,691	3,171
Increase (decrease) in current liabilities:
Accounts payable	(60,448)	307,473
Income taxes payable	(12,073)	0
Accrued liabilities	2,175	20,865
Turnaround expenditures	(38,116)	(9,708)
Other, net	5,686	4,723
Net cash provided by operating activities	569,940	721,479
Cash flows from investing activities:
Additions to properties, plants and equipment	(267,100)	(205,987)
Purchases of marketable securities	(246,008)	(498,080)
Sales and maturities of marketable securities	327,310	543,604
Other, net	2,232	5,021
Net cash used for investing activities	(233,379)	(194,224)
Cash flows from financing activities:
Redemption of senior notes - HFC	(155,156)
Proceeds from product financing arrangement	0	5,964
Purchase of treasury stock	(320,132)	(20,135)
Accelerated stock repurchase forward contract	(60,000)	0
Dividends	(125,192)	(323,088)
Excess tax benefit from equity based compensation	0	3,778
Other, net	(2,111)	(839)
Net cash used for financing activities	(671,187)	(349,056)
Cash and cash equivalents:
Increase (decrease) for the period	(334,626)	178,199
Beginning of period	567,985	940,103
End of period	233,359	1,118,302
Cash paid during the period for:
Interest	25,612	30,702
Income taxes	310,117	118,142
HEP [Member]
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	28,950	30,661
Cash flows from investing activities:
Additions to properties, plants and equipment	(49,813)	(38,782)
Cash flows from financing activities:
Borrowings under credit agreement - HEP	254,100	477,100
Repayments under credit agreement - HEP	(221,100)	(297,100)
Redemption of senior notes - HFC	0	(156,188)
Distributions to noncontrolling interest	(41,596)	$ (38,548)
Cash and cash equivalents:
Beginning of period	2,830
End of period	$ 10,424

Description of Business and Pre

Description of Business and Presentation of Financial Statements	6 Months Ended
	Jun. 30, 2015
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Description Of Business And Presentation Of Financial Statements	Description of Business and Presentation of Financial Statements References herein to HollyFrontier Corporation (“HollyFrontier”) include HollyFrontier and its consolidated subsidiaries. In accordance with the Securities and Exchange Commission’s (“SEC”) “Plain English” guidelines, this Quarterly Report on Form 10-Q has been written in the first person. In these financial statements, the words “we,” “our,” “ours” and “us” refer only to HollyFrontier and its consolidated subsidiaries or to HollyFrontier or an individual subsidiary and not to any other person, with certain exceptions. Generally, the words “we,” “our,” “ours” and “us” include Holly Energy Partners, L.P. (“HEP”) and its subsidiaries as consolidated subsidiaries of HollyFrontier, unless when used in disclosures of transactions or obligations between HEP and HollyFrontier or its other subsidiaries. These financial statements contain certain disclosures of agreements that are specific to HEP and its consolidated subsidiaries and do not necessarily represent obligations of HollyFrontier. When used in descriptions of agreements and transactions, “HEP” refers to HEP and its consolidated subsidiaries. We are principally an independent petroleum refiner that produces high-value light products such as gasoline, diesel fuel, jet fuel, specialty lubricant products, and specialty and modified asphalt. We own and operate petroleum refineries that serve markets throughout the Mid-Continent, Southwest and Rocky Mountain regions of the United States. As of June 30, 2015 , we: • owned and operated a petroleum refinery in El Dorado, Kansas (the “El Dorado Refinery”), two refinery facilities located in Tulsa, Oklahoma (collectively, the “Tulsa Refineries”), a refinery in Artesia, New Mexico that is operated in conjunction with crude oil distillation and vacuum distillation and other facilities situated 65 miles away in Lovington, New Mexico (collectively, the “Navajo Refinery”), a refinery located in Cheyenne, Wyoming (the “Cheyenne Refinery”) and a refinery in Woods Cross, Utah (the “Woods Cross Refinery”); • owned and operated NK Asphalt Partners (“NK Asphalt”) which operates various asphalt terminals in Arizona, New Mexico and Oklahoma; and • owned a 39% interest in HEP, a consolidated variable interest entity (“VIE”), which includes our 2% general partner interest. HEP owns and operates logistic assets consisting of petroleum product and crude oil pipelines and terminal, tankage and loading rack facilities that principally support our refining and marketing operations in the Mid-Continent, Southwest and Rocky Mountain regions of the United States and Alon USA, Inc.'s (“Alon”) refinery in Big Spring, Texas. Additionally, HEP owns a 75% interest in UNEV Pipeline, LLC (“UNEV”), which owns a 12 -inch refined products pipeline from Salt Lake City, Utah to Las Vegas, Nevada, together with terminal facilities in the Cedar City, Utah and North Las Vegas areas (the “UNEV Pipeline”) and a 25% interest in SLC Pipeline LLC (the “SLC Pipeline”), which owns a 95 -mile intrastate pipeline system that serves refineries in the Salt Lake City area. We have prepared these consolidated financial statements without audit. In management’s opinion, these consolidated financial statements include all normal recurring adjustments necessary for a fair presentation of our consolidated financial position as of June 30, 2015 , the consolidated results of operations and comprehensive income for the three and six months ended June 30, 2015 and 2014 and consolidated cash flows for the six months ended June 30, 2015 and 2014 in accordance with the rules and regulations of the SEC. Although certain notes and other information required by generally accepted accounting principles in the United States (“GAAP”) have been condensed or omitted, we believe that the disclosures in these consolidated financial statements are adequate to make the information presented not misleading. These consolidated financial statements should be read in conjunction with our Annual Report on Form 10-K for the year ended December 31, 2014 that has been filed with the SEC. Our results of operations for the six months ended June 30, 2015 are not necessarily indicative of the results of operations to be realized for the year ending December 31, 2015 . Accounts Receivable: Our accounts receivable consist of amounts due from customers that are primarily companies in the petroleum industry. Credit is extended based on our evaluation of the customer’s financial condition, and in certain circumstances collateral, such as letters of credit or guarantees, is required. We reserve for doubtful accounts based on our historical loss experience as well as specific accounts identified as high risk, which historically have been minimal. Credit losses are charged to the allowance for doubtful accounts when an account is deemed uncollectible. Our allowance for doubtful accounts was $2.3 million at June 30, 2015 and $2.4 million at December 31, 2014 . Inventories: Inventories are stated at the lower of cost, using the last-in, first-out (“LIFO”) method for crude oil, unfinished and finished refined products and the average cost method for materials and supplies, or market. In periods of rapidly declining prices, LIFO inventories may have to be written down to market value due to the higher costs assigned to LIFO layers in prior periods. In addition, the use of the LIFO inventory method may result in increases or decreases to cost of sales in years that inventory volumes decline as the result of charging cost of sales with LIFO inventory costs generated in prior periods. An actual valuation of inventory under the LIFO method is made at the end of each year based on the inventory levels at that time. Accordingly, interim LIFO calculations are based on management's estimates of expected year-end inventory levels and are subject to the final year-end LIFO inventory valuation. Goodwill: We have goodwill that primarily arose from our merger with Frontier Oil Corporation on July 1, 2011. Goodwill represents the excess of the cost of an acquired entity over the fair value of the assets acquired and liabilities assumed. Goodwill is not subject to amortization and is tested annually or more frequently if events or circumstances indicate the possibility of impairment. As of June 30, 2015 , there have been no impairments to goodwill. New Accounting Pronouncements Revenue Recognition In May 2014, an accounting standard update (ASU 2014-09, “Revenue from Contracts with Customers”) was issued requiring revenue to be recognized when promised goods or services are transferred to customers in an amount that reflects the expected consideration for these goods or services. This standard has an effective date of January 1, 2018, and we are evaluating the impact of this standard.

Holly Energy Partners

Holly Energy Partners	6 Months Ended
	Jun. 30, 2015
Variable Interest Entities [Abstract]
Variable Interest Entities	HEP, a consolidated VIE, is a publicly held master limited partnership that was formed to acquire, own and operate the petroleum product and crude oil pipeline and terminal, tankage and loading rack facilities that support our refining and marketing operations in the Mid-Continent, Southwest and Rocky Mountain regions of the United States. HEP also owns and operates refined product pipelines and terminals, located primarily in Texas, that serve Alon's refinery in Big Spring, Texas. As of June 30, 2015 , we owned a 39% interest in HEP, including the 2% general partner interest. As the general partner of HEP, we have the sole ability to direct the activities that most significantly impact HEP's financial performance, and therefore we consolidate HEP. See Note 16 for supplemental guarantor/non-guarantor financial information, including HEP balances included in these consolidated financial statements. HEP has two primary customers (including us) and generates revenues by charging tariffs for transporting petroleum products and crude oil though its pipelines, by charging fees for terminalling refined products and other hydrocarbons, and storing and providing other services at its storage tanks and terminals. Under our long-term transportation agreements with HEP (discussed further below), we accounted for 81% of HEP’s total revenues for the six months ended June 30, 2015 . We do not provide financial or equity support through any liquidity arrangements and / or debt guarantees to HEP. HEP has outstanding debt under a senior secured revolving credit agreement and its senior notes. With the exception of the assets of HEP Logistics Holdings, L.P., one of our wholly-owned subsidiaries and HEP’s general partner, HEP’s creditors have no recourse to our other assets. Any recourse to HEP’s general partner would be limited to the extent of HEP Logistics Holdings, L.P.’s assets, which other than its investment in HEP are not significant. Furthermore, our creditors have no recourse to the assets of HEP and its consolidated subsidiaries. See Note 9 for a description of HEP’s debt obligations. HEP has risk associated with its operations. If a major customer of HEP were to terminate its contracts or fail to meet desired shipping or throughput levels for an extended period of time, revenue would be reduced and HEP could suffer substantial losses to the extent that a new customer is not found. In the event that HEP incurs a loss, our operating results will reflect HEP’s loss, net of intercompany eliminations, to the extent of our ownership interest in HEP at that point in time. Transportation Agreements HEP serves our refineries under long-term pipeline and terminal, tankage and throughput agreements expiring from 2019 through 2026. Under these agreements, we pay HEP fees to transport, store and throughput volumes of refined product and crude oil on HEP's pipeline and terminal, tankage and loading rack facilities that result in minimum annual payments to HEP including UNEV (a consolidated subsidiary of HEP). Under these agreements, the agreed upon tariff rates are subject to annual tariff rate adjustments on July 1 at a rate based upon the percentage change in Producer Price Index or Federal Energy Regulatory Commission index. As of July 1, 2015, these agreements result in minimum annualized payments to HEP of $236.6 million . Our transactions with HEP including fees paid under our transportation agreements with HEP and UNEV are eliminated and have no impact on our consolidated financial statements.

Financial Instruments

Financial Instruments	6 Months Ended
	Jun. 30, 2015
Financial Instruments, Owned, at Fair Value [Abstract]
Financial Instruments	Financial Instruments Our financial instruments consist of cash and cash equivalents, investments in marketable securities, accounts receivable, accounts payable, debt and derivative instruments. The carrying amounts of cash and cash equivalents, accounts receivable and accounts payable approximate fair value. HEP's outstanding credit agreement borrowings also approximate fair value as interest rates are reset frequently at current interest rates. Fair value measurements are derived using inputs (assumptions that market participants would use in pricing an asset or liability, including assumptions about risk). GAAP categorizes inputs used in fair value measurements into three broad levels as follows: • (Level 1) Quoted prices in active markets for identical assets or liabilities. • (Level 2) Observable inputs other than quoted prices included in Level 1, such as quoted prices for similar assets and liabilities in active markets, similar assets and liabilities in markets that are not active or can be corroborated by observable market data. • (Level 3) Unobservable inputs that are supported by little or no market activity and that are significant to the fair value of the assets or liabilities. This includes valuation techniques that involve significant unobservable inputs. The carrying amounts and estimated fair values of investments in marketable securities, derivative instruments and senior notes at June 30, 2015 and December 31, 2014 were as follows: Fair Value by Input Level Financial Instrument Carrying Amount Fair Value Level 1 Level 2 Level 3 (In thousands) June 30, 2015 Assets: Marketable securities $ 392,859 $ 392,859 $ — $ 392,859 $ — Commodity price swaps 131,333 131,333 — 131,333 — Forward contracts 76 76 — 76 — HEP interest rate swaps 134 134 — 134 — Total assets $ 524,402 $ 524,402 $ — $ 524,402 $ — Liabilities: NYMEX futures contracts $ 236 $ 236 $ 236 $ — $ — Commodity price swaps 126,983 126,983 — 126,983 — Forward contracts 2,143 2,143 — 2,143 — HEP senior notes 296,905 295,875 — 295,875 — HEP interest rate swaps 707 707 — 707 — Total liabilities $ 426,974 $ 425,944 $ 236 $ 425,708 $ — Fair Value by Input Level Financial Instrument Carrying Amount Fair Value Level 1 Level 2 Level 3 (In thousands) December 31, 2014 Assets: Marketable securities $ 474,110 $ 474,110 $ — $ 474,110 $ — NYMEX futures contracts 17,619 17,619 17,619 — — Commodity price swaps 208,296 208,296 — 208,296 — HEP interest rate swaps 1,019 1,019 — 1,019 — Total assets $ 701,044 $ 701,044 $ 17,619 $ 683,425 $ — Liabilities: Commodity price swaps $ 196,897 $ 196,897 $ — $ 196,897 $ — HollyFrontier senior notes 154,144 155,250 — 155,250 — HEP senior notes 296,579 291,000 — 291,000 — HEP interest rate swaps 1,065 1,065 — 1,065 — Total liabilities $ 648,685 $ 644,212 $ — $ 644,212 $ — Level 1 Financial Instruments Our NYMEX futures contracts are exchange traded and are measured and recorded at fair value using quoted market prices, a Level 1 input. Level 2 Financial Instruments Investments in marketable securities and derivative instruments consisting of commodity price swaps, forward sales and purchase contracts and HEP's interest rate swaps are measured and recorded at fair value using Level 2 inputs. The fair values of the commodity price and interest rate swap contracts are based on the net present value of expected future cash flows related to both variable and fixed rate legs of the respective swap agreements. The measurements are computed using market-based observable inputs, quoted forward commodity prices with respect to our commodity price swaps and the forward London Interbank Offered Rate (“LIBOR”) yield curve with respect to HEP's interest rate swaps. The fair value of the marketable securities and senior notes is based on values provided by a third-party, which were derived using market quotes for similar type instruments, a Level 2 input. Level 3 Financial Instruments We at times have forward commodity sales and purchase contracts for which quoted forward market prices are not readily available. The forward rate used to value these forward sales and purchase contracts are derived using a projected forward rate using quoted market rates for similar products, adjusted for regional pricing and grade differentials, a Level 3 input. The following table presents the changes in fair value of our Level 3 assets and liabilities (all related to derivative instruments) for the three and six months ended June 30, 2015 and 2014 : Three Months Ended June 30, Six Months Ended June 30, Level 3 Financial Instruments 2015 2014 2015 2014 (In thousands) Liability balance at beginning of period $ (2,552 ) $ (22,473 ) $ — $ (35,318 ) Change in fair value: Recognized in other comprehensive income 6,404 (90,559 ) 3,852 (112,695 ) Recognized in cost of products sold — (7,084 ) — 1,885 Settlement date fair value of contractual maturities: Recognized in sales and other revenues (3,852 ) 48,942 (3,852 ) 74,273 Recognized in cost of products sold — (4,463 ) — (3,782 ) Liability balance at end of period $ — $ (75,637 ) $ — $ (75,637 )

Earnings Per Share

Earnings Per Share	6 Months Ended
	Jun. 30, 2015
Earnings Per Share [Abstract]
Earnings Per Share	Earnings Per Share Basic earnings per share is calculated as net income attributable to HollyFrontier stockholders divided by the average number of shares of common stock outstanding. Diluted earnings per share assumes, when dilutive, the issuance of the net incremental shares from restricted shares and performance share units. The following is a reconciliation of the components of the basic and diluted per share computations for net income attributable to HollyFrontier stockholders: Three Months Ended June 30, Six Months Ended June 30, 2015 2014 2015 2014 (In thousands, except per share data) Net income attributable to HollyFrontier stockholders $ 360,824 $ 176,429 $ 587,700 $ 328,490 Participating securities' share in earnings 1,036 475 1,677 945 Net income attributable to common shares $ 359,788 $ 175,954 $ 586,023 $ 327,545 Average number of shares of common stock outstanding 191,355 198,139 193,202 198,217 Effect of dilutive variable restricted shares and performance share units (1) 99 241 77 191 Average number of shares of common stock outstanding assuming dilution 191,454 198,380 193,279 198,408 Basic earnings per share $ 1.88 $ 0.89 $ 3.03 $ 1.65 Diluted earnings per share $ 1.88 $ 0.89 $ 3.03 $ 1.65 (1) Excludes anti-dilutive restricted and performance share units of: 349 26 379 2

Stock-Based Compensation

Stock-Based Compensation	6 Months Ended
	Jun. 30, 2015
Share-based Compensation [Abstract]
Stock-Based Compensation	Stock-Based Compensation As of June 30, 2015 , we have two principal share-based compensation plans (collectively, the “Long-Term Incentive Compensation Plan”). The compensation cost charged against income for these plans was $6.1 million and $6.8 million for the three months ended June 30, 2015 and 2014 , respectively, and $12.5 million and $12.2 million for the six months ended June 30, 2015 and 2014 , respectively. Our accounting policy for the recognition of compensation expense for awards with pro-rata vesting is to expense the costs ratably over the vesting periods. Additionally, HEP maintains a share-based compensation plan for Holly Logistic Services, L.L.C.'s non-employee directors and certain executives and employees. Compensation cost attributable to HEP’s share-based compensation plan was $0.9 million and $0.8 million for the three months ended June 30, 2015 and 2014 , respectively, and $1.8 million and $1.7 million for the six months ended June 30, 2015 and 2014 , respectively. Restricted Stock and Restricted Stock Units Under our Long-Term Incentive Compensation Plan, we grant certain officers and other key employees restricted stock and restricted stock unit awards with awards generally vesting over a period of one to three years. Restricted stock award recipients are generally entitled to all the rights of absolute ownership of the restricted shares from the date of grant including the right to vote the shares and to receive dividends. Upon vesting, restrictions on the restricted shares lapse at which time they convert to common shares. In addition, we grant non-employee directors restricted stock unit awards, which typically vest over a period of one year and are payable in stock. The fair value of each restricted stock and restricted stock unit award is measured based on the grant date market price of our common shares and is amortized over the respective vesting period. A summary of restricted stock and restricted stock unit activity and changes during the six months ended June 30, 2015 is presented below: Restricted Stock and Restricted Stock Units Grants Weighted Average Grant Date Fair Value Aggregate Intrinsic Value ($000) Outstanding at January 1, 2015 (non-vested) 669,777 $ 44.12 Granted 9,894 37.68 Vesting (transfer/conversion to common stock) (2,999 ) 44.48 Forfeited (13,106 ) 43.81 Outstanding at June 30, 2015 (non-vested) 663,566 $ 44.03 $ 28,268 For the six months ended June 30, 2015 , 2,999 restricted stock and restricted stock units vested having a grant date fair value of $0.1 million . As of June 30, 2015 , there was $13.4 million of total unrecognized compensation cost related to non-vested restricted stock and restricted stock unit grants. That cost is expected to be recognized over a weighted-average period of 1.3 years. Performance Share Units Under our Long-Term Incentive Compensation Plan, we grant certain officers and other key employees performance share units, which are payable in stock upon meeting certain criteria over the service period, and generally vest over a period of three years. Under the terms of our performance share unit grants, awards are subject to “financial performance” and “market performance” criteria. Financial performance is based on our financial performance compared to a peer group of independent refining companies, while market performance is based on the relative standing of total shareholder return achieved by HollyFrontier compared to peer group companies. The number of shares ultimately issued under these awards can range from zero to 200% . As of June 30, 2015 , estimated share payouts for outstanding non-vested performance share unit awards averaged approximately 35% . A summary of performance share unit activity and changes during the six months ended June 30, 2015 is presented below: Performance Share Units Grants Outstanding at January 1, 2015 (non-vested) 725,054 Granted 4,242 Forfeited (25,973 ) Outstanding at June 30, 2015 (non-vested) 703,323 As of June 30, 2015 , there was $14.9 million of total unrecognized compensation cost related to non-vested performance share units having a grant date fair value of $43.67 per unit. That cost is expected to be recognized over a weighted-average period of 1.5 years.

Cash and Cash Equivalents and I

Cash and Cash Equivalents and Investments in Marketable Securities	6 Months Ended
	Jun. 30, 2015
Cash, Cash Equivalents, and Short-term Investments [Abstract]
Cash And Cash Equivalents And Investments In Marketable Securities	Cash and Cash Equivalents and Investments in Marketable Securities Our investment portfolio at June 30, 2015 consisted of cash, cash equivalents and investments in marketable securities. We currently invest in marketable debt securities with the maximum maturity or put date of any individual issue generally not greater than one year from the date of purchase, which are usually held until maturity. All of these instruments are classified as available-for-sale. As a result, they are reported at fair value using quoted market prices. Interest income is recorded as earned. Unrealized gains and losses, net of related income taxes, are reported as a component of accumulated other comprehensive income. Upon sale or maturity, realized gains on our marketable debt securities are recognized as interest income. These gains are computed based on the specific identification of the underlying cost of the securities, net of unrealized gains and losses previously reported in other comprehensive income. Unrealized gains and losses on our available-for-sale securities are due to changes in market prices and are considered temporary. The following is a summary of our marketable securities: Amortized Cost Gross Unrealized Gain Gross Unrealized Loss Fair Value (Net Carrying Amount) (In thousands) June 30, 2015 Certificates of deposit $ 20,998 $ 11 $ — $ 21,009 Commercial paper 29,957 17 — 29,974 Corporate debt securities 68,339 2 (43 ) 68,298 State and political subdivisions debt securities 273,700 11 (133 ) 273,578 Total marketable securities $ 392,994 $ 41 $ (176 ) $ 392,859 December 31, 2014 Certificates of deposit $ 54,000 $ 10 $ — $ 54,010 Commercial paper 52,297 7 (4 ) 52,300 Corporate debt securities 136,181 1 (94 ) 136,088 State and political subdivisions debt securities 231,819 5 (112 ) 231,712 Total marketable securities $ 474,297 $ 23 $ (210 ) $ 474,110 Interest income recognized on our marketable securities was $0.5 million and $0.6 million for the three months ended June 30, 2015 and 2014 , respectively, and $0.9 million and $1.2 million for the six months ended June 30, 2015 and 2014 , respectively.

Inventories

Inventories	6 Months Ended
	Jun. 30, 2015
Inventory, Net [Abstract]
Inventories	Inventories Inventory consists of the following components: June 30, December 31, 2014 (In thousands) Crude oil $ 508,984 $ 581,592 Other raw materials and unfinished products (1) 191,102 204,467 Finished products (2) 617,996 531,523 Lower of cost or market reserve (255,452 ) (397,478 ) Process chemicals (3) 4,903 4,028 Repair and maintenance supplies and other 122,385 110,999 Total inventory $ 1,189,918 $ 1,035,131 (1) Other raw materials and unfinished products include feedstocks and blendstocks, other than crude. (2) Finished products include gasolines, jet fuels, diesels, lubricants, asphalts, LPG’s and residual fuels. (3) Process chemicals include additives and other chemicals. Inventories, which are valued at the lower of LIFO cost or market, reflect a valuation reserve of $255.5 million and $397.5 million at June 30, 2015 and December 31, 2014 , respectively. The December 31, 2014 market reserve of $397.5 million was reversed and reduced cost of products sold during the six months ended June 30, 2015 , due to the sale of inventory quantities that gave rise to the reserve. A new market reserve of $255.5 million was established as of June 30, 2015 based on market conditions and prices at that time. The effect of the change in lower of cost or market reserve was a $135.5 million and $142.0 million reduction of cost of products sold for the three and six months ended June 30, 2015 , respectively.

Environmental

Environmental	6 Months Ended
	Jun. 30, 2015
Environmental Expense and Liabilities [Abstract]
Environmental	Environmental We expensed $0.1 million and $1.0 million for the three months ended June 30, 2015 and 2014 , respectively, and $4.6 million and $1.3 million for the six months ended June 30, 2015 and 2014 , respectively, for environmental remediation obligations. The accrued environmental liability reflected in our consolidated balance sheets was $102.8 million and $104.5 million at June 30, 2015 and December 31, 2014 , respectively, of which $83.8 million and $81.8 million , respectively, were classified as other long-term liabilities. These accruals include remediation and monitoring costs expected to be incurred over an extended period of time (up to 30 years for certain projects).

Debt

Debt	6 Months Ended
	Jun. 30, 2015
Debt Disclosure [Abstract]
Debt	Debt HollyFrontier Credit Agreement We have a $1 billion senior unsecured revolving credit facility maturing in July 2019 (the “HollyFrontier Credit Agreement”), which may be used for revolving credit loans and letters of credit from time to time and is available to fund general corporate purposes. Indebtedness under the HollyFrontier Credit Agreement is recourse to HollyFrontier and guaranteed by certain of our wholly-owned subsidiaries. At June 30, 2015 , we were in compliance with all covenants, had no outstanding borrowings and had outstanding letters of credit totaling $4.6 million under the HollyFrontier Credit Agreement. HEP Credit Agreement HEP has an $850 million senior secured revolving credit facility that matures in November 2018 (the “HEP Credit Agreement”) and is available to fund capital expenditures, investments, acquisitions, distribution payments and working capital and for general partnership purposes. It is also available to fund letters of credit up to a $50 million sub-limit. At June 30, 2015 , HEP was in compliance with all of its covenants, had outstanding borrowings of $604.0 million and no outstanding letters of credit under the HEP Credit Agreement. In April 2015, HEP amended its credit agreement, increasing the size of the credit facility from $650 million to $850 million . HEP’s obligations under the HEP Credit Agreement are collateralized by substantially all of HEP’s assets. Indebtedness under the HEP Credit Agreement involves recourse to HEP Logistics Holdings, L.P., its general partner, and is guaranteed by HEP’s wholly-owned subsidiaries. Any recourse to the general partner would be limited to the extent of HEP Logistics Holdings, L.P.’s assets, which other than its investment in HEP are not significant. HEP’s creditors have no recourse to our other assets. Furthermore, our creditors have no recourse to the assets of HEP and its consolidated subsidiaries. HollyFrontier Senior Notes In June 2015, we redeemed our $150.0 million aggregate principal amount of 6.875% senior notes maturing November 2018 at a redemption cost of $155.2 million at which time we recognized a $1.4 million early extinguishment loss consisting of a $5.2 million debt redemption premium, net of an unamortized premium of $3.8 million . HollyFrontier Financing Obligation We have a financing obligation that relates to a sale and lease-back of certain crude oil tankage that we sold to an affiliate of Plains All American Pipeline, L.P. (“Plains”) in October 2009 for $40.0 million . Monthly lease payments are recorded as a reduction in principal over the 15 -year lease term ending in 2024. HEP Senior Notes HEP’s 6.5% senior notes ( $300 million aggregate principal amount maturing March 2020) (the “HEP Senior Notes”) are unsecured and impose certain restrictive covenants, including limitations on HEP’s ability to incur additional indebtedness, make investments, sell assets, incur certain liens, pay distributions, enter into transactions with affiliates, and enter into mergers. At any time when the HEP Senior Notes are rated investment grade by both Moody’s and Standard & Poor’s and no default or event of default exists, HEP will not be subject to many of the foregoing covenants. Additionally, HEP has certain redemption rights under the HEP Senior Notes. In March 2014, HEP redeemed its $150.0 million aggregate principal amount of 8.25% senior notes maturing March 2018 at a redemption cost of $156.2 million , at which time HEP recognized a $7.7 million early extinguishment loss consisting of a $6.2 million debt redemption premium and unamortized discount and financing costs of $1.5 million . HEP funded the redemption with borrowings under the HEP Credit Agreement. Indebtedness under the HEP Senior Notes involves recourse to HEP Logistics Holdings, L.P., its general partner, and is guaranteed by HEP’s wholly-owned subsidiaries. However, any recourse to the general partner would be limited to the extent of HEP Logistics Holdings, L.P.’s assets, which other than its investment in HEP, are not significant. HEP’s creditors have no recourse to our other assets. Furthermore, our creditors have no recourse to the assets of HEP and its consolidated subsidiaries. The carrying amounts of long-term debt are as follows: June 30, December 31, (In thousands) 6.875% Senior Notes Principal $ — $ 150,000 Unamortized premium — 4,144 — 154,144 Financing Obligation 32,257 33,167 Total HollyFrontier long-term debt 32,257 187,311 HEP Credit Agreement 604,000 571,000 HEP 6.5% Senior Notes Principal 300,000 300,000 Unamortized discount (3,095 ) (3,421 ) 296,905 296,579 Total HEP long-term debt 900,905 867,579 Total long-term debt $ 933,162 $ 1,054,890 We capitalized interest attributable to construction projects of $2.5 million and $3.1 million for the three months ended June 30, 2015 and 2014 , respectively, and $5.4 million and $6.0 million for the six months ended June 30, 2015 and 2014 , respectively.

Derivative Instruments And Hedg

Derivative Instruments And Hedging Activities	6 Months Ended
	Jun. 30, 2015
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Derivative Instruments And Hedging Activities	Derivative Instruments and Hedging Activities Commodity Price Risk Management Our primary market risk is commodity price risk. We are exposed to market risks related to the volatility in crude oil and refined products, as well as volatility in the price of natural gas used in our refining operations. We periodically enter into derivative contracts in the form of commodity price swaps, forward purchase and sales and futures contracts to mitigate price exposure with respect to: • our inventory positions; • natural gas purchases; • costs of crude oil and related grade differentials; • prices of refined products; and • our refining margins. Accounting Hedges We have swap contracts serving as cash flow hedges against price risk on forecasted purchases of natural gas and WTI crude oil and forecasted sales of refined product. We also have forward sales and purchase contracts that lock in the prices of future sales and purchases of refined product. These contracts have been designated as accounting hedges and are measured at fair value with offsetting adjustments (gains/losses) recorded directly to other comprehensive income. These fair value adjustments are later reclassified to earnings as the hedging instruments mature. On a quarterly basis, hedge ineffectiveness is measured by comparing the change in fair value of the swap contracts against the expected future cash inflows/outflows on the respective transaction being hedged. Any hedge ineffectiveness is also recognized in earnings. The following table presents the pre-tax effect on other comprehensive income (“OCI”) and earnings due to fair value adjustments and maturities of commodity price swaps and forward sales under hedge accounting: Unrealized Gain (Loss) Recognized in OCI Gain (Loss) Recognized in Earnings Due to Settlements Gain (Loss) Attributable to Hedge Ineffectiveness Recognized in Earnings Location Amount Location Amount (In thousands) Three Months Ended June 30, 2015 Change in fair value $ 8,501 Sales and other revenues $ 49,752 Gain reclassified to earnings due to settlements (14,802 ) Cost of products sold (30,964 ) Sales and other revenues $ (140 ) Amortization of discontinued hedges reclassified to earnings 270 Operating expenses (4,256 ) Cost of products sold 2,494 Total $ (6,031 ) $ 14,532 $ 2,354 Three Months Ended June 30, 2014 Change in fair value $ 47,988 Sales and other revenues $ (48,942 ) Gain reclassified to earnings due to settlements (13,197 ) Cost of products sold 61,124 Amortization of discontinued hedges reclassified to earnings 270 Operating expenses 745 Operating expenses $ 1,354 Total $ 35,061 $ 12,927 $ 1,354 Six Months Ended June 30, 2015 Change in fair value $ (5,647 ) Sales and other revenues $ 98,932 Sales and other revenues $ (274 ) Gain reclassified to earnings due to settlements (19,494 ) Cost of products sold (71,733 ) Cost of products sold 3,738 Amortization of discontinued hedge reclassified to earnings 540 Operating expenses (8,245 ) Operating expenses 547 Total $ (24,601 ) $ 18,954 $ 4,011 Six Months Ended June 30, 2014 Change in fair value $ 140,466 Sales and other revenues $ (74,273 ) Gain reclassified to earnings due to settlements (18,957 ) Cost of products sold 90,441 Amortization of discontinued hedge reclassified to earnings 540 Operating expenses 2,249 Operating expenses $ (806 ) Total $ 122,049 $ 18,417 $ (806 ) As of June 30, 2015 , we have the following notional contract volumes related to outstanding derivative instruments serving as cash flow hedges against price risk on forecasted purchases of natural gas and crude oil and sales of refined products: Notional Contract Volumes by Year of Maturity Derivative Instrument Total Outstanding Notional 2015 2016 2017 Unit of Measure Natural gas - long 24,000,000 4,800,000 9,600,000 9,600,000 MMBTU WTI crude oil - long 2,208,000 2,208,000 — — Barrels Ultra-low sulfur diesel - short 2,208,000 2,208,000 — — Barrels Forward diesel sales 1,500,000 1,500,000 — — Barrels Forward diesel purchases 1,125,000 1,125,000 — — Barrels In 2013 , we dedesignated certain commodity price swaps (long positions) that previously received hedge accounting treatment. These contracts now serve as economic hedges against price risk on forecasted natural gas purchases totaling 24,000,000 MMBTU's to be purchased ratably through 2017. As of June 30, 2015 , we have an unrealized loss of $ 2.7 million classified in accumulated other comprehensive income that relates to the application of hedge accounting prior to dedesignation that is amortized as a charge to operating expenses as the contracts mature. Economic Hedges We also have swap contracts that serve as economic hedges (derivatives used for risk management, but not designated as accounting hedges) to fix our purchase price on forecasted purchases of WTI crude oil, and to lock in basis spread differentials on forecasted purchases of crude oil and natural gas. Also, we have NYMEX futures contracts to lock in prices on forecasted purchases of inventory. These contracts are measured at fair value with offsetting adjustments (gains/losses) recorded directly to income. The following table presents the pre-tax effect on income due to maturities and fair value adjustments of our economic hedges: Three Months Ended June 30, Six Months Ended June 30, Location of Gain (Loss) Recognized in Income 2015 2014 2015 2014 (In thousands) Cost of products sold $ 5,292 $ (24,432 ) $ 27,574 $ (24,406 ) Operating expenses (248 ) (140 ) (544 ) (188 ) Total $ 5,044 $ (24,572 ) $ 27,030 $ (24,594 ) As of June 30, 2015 , we have the following notional contract volumes related to our outstanding derivative contracts serving as economic hedges: Notional Contract Volumes by Year of Maturity Derivative Instrument Total Outstanding Notional 2015 2016 2017 Unit of Measure Commodity price swap (crude basis spread) - long 4,412,000 3,680,000 732,000 — Barrels Commodity price swap (natural gas basis spread) - long 17,820,000 4,020,000 6,900,000 6,900,000 MMBTU Commodity price swap (natural gas) - long 24,000,000 4,800,000 9,600,000 9,600,000 MMBTU Commodity price swap (natural gas) - short 24,000,000 4,800,000 9,600,000 9,600,000 MMBTU NYMEX futures (WTI) - short 1,095,000 1,095,000 — — Barrels Interest Rate Risk Management HEP uses interest rate swaps to manage its exposure to interest rate risk. As of June 30, 2015 , HEP had three interest rate swap contracts that hedge its exposure to the cash flow risk caused by the effects of LIBOR changes on $305.0 million in credit agreement advances. The first interest rate swap effectively converts $155.0 million of LIBOR based debt to fixed-rate debt having an interest rate of 0.99% plus an applicable margin of 2.00% as of June 30, 2015 , which equaled an effective interest rate of 2.99% . This swap matures in February 2016. HEP has two additional interest rate swaps with identical terms which effectively convert $150.0 million of LIBOR based debt to fixed rate debt having an interest rate of 0.74% plus an applicable margin of 2.00% as of June 30, 2015 , which equaled an effective interest rate of 2.74% . Both of these swap contracts mature in July 2017. All of these swap contracts have been designated as cash flow hedges. To date, there has been no ineffectiveness on these cash flow hedges. The following table presents the pre-tax effect on other comprehensive income and earnings due to fair value adjustments and maturities of HEP's interest rate swaps under hedge accounting: Unrealized Gain (Loss) Recognized in OCI Loss Recognized in Earnings Due to Settlements Location Amount (In thousands) Three Months Ended June 30, 2015 Interest rate swaps Change in fair value $ (306 ) Loss reclassified to earnings due to settlements 528 Interest expense $ (528 ) Total $ 222 $ (528 ) Three Months Ended June 30, 2014 Interest rate swaps Change in fair value $ (1,299 ) Loss reclassified to earnings due to settlements 553 Interest expense $ (553 ) Total $ (746 ) $ (553 ) Six Months Ended June 30, 2015 Interest rate swaps Change in fair value $ (1,586 ) Loss reclassified to earnings due to settlements 1,059 Interest expense $ (1,059 ) Total $ (527 ) $ (1,059 ) Six Months Ended June 30, 2014 Interest rate swaps Change in fair value $ (1,742 ) Loss reclassified to earnings due to settlements 1,091 Interest expense $ (1,091 ) Total $ (651 ) $ (1,091 ) The following table presents the fair value and balance sheet locations of our outstanding derivative instruments. These amounts are presented on a gross basis with offsetting balances that reconcile to a net asset or liability position in our consolidated balance sheets. We present on a net basis to reflect the net settlement of these positions in accordance with provisions of our master netting arrangements. Derivatives in Net Asset Position Derivatives in Net Liability Position Gross Assets Gross Liabilities Offset in Balance Sheet Net Assets Recognized in Balance Sheet Gross Liabilities Gross Assets Offset in Balance Sheet Net Liabilities Recognized in Balance Sheet (In thousands) June 30, 2015 Derivatives designated as cash flow hedging instruments: Commodity price swap contracts $ 62,370 $ (49,711 ) $ 12,659 $ 42,647 $ (21,026 ) $ 21,621 Forward contracts 223 (166 ) 57 2,563 (439 ) 2,124 Interest rate swap contracts 134 — 134 707 — 707 $ 62,727 $ (49,877 ) $ 12,850 $ 45,917 $ (21,465 ) $ 24,452 Derivatives not designated as cash flow hedging instruments: Commodity price swap contracts $ 24,580 $ (7,461 ) $ 17,119 $ 27,282 $ (23,475 ) $ 3,807 NYMEX futures contracts — — — 236 — 236 $ 24,580 $ (7,461 ) $ 17,119 $ 27,518 $ (23,475 ) $ 4,043 Total net balance $ 29,969 $ 28,495 Balance sheet classification: Prepayment and other $ 29,295 Accrued liabilities $ 4,727 Intangibles and other 674 Other long-term liabilities 23,768 $ 29,969 $ 28,495 Derivatives in Net Asset Position Derivatives in Net Liability Position Gross Assets Gross Liabilities Offset in Balance Sheet Net Assets Recognized in Balance Sheet Gross Liabilities Gross Assets Offset in Balance Sheet Net Liabilities Recognized in Balance Sheet (In thousands) December 31, 2014 Derivatives designated as cash flow hedging instruments: Commodity price swap contracts $ 173,658 $ (142,115 ) $ 31,543 $ 21,441 $ — $ 21,441 Interest rate swap contracts 1,019 — 1,019 1,065 — 1,065 $ 174,677 $ (142,115 ) $ 32,562 $ 22,506 $ — $ 22,506 Derivatives not designated as cash flow hedging instruments: Commodity price swap contracts $ 17,630 $ (12,942 ) $ 4,688 $ 20,398 $ (17,007 ) $ 3,391 NYMEX futures contracts 17,619 — 17,619 — — — $ 35,249 $ (12,942 ) $ 22,307 $ 20,398 $ (17,007 ) $ 3,391 Total net balance $ 54,869 $ 25,897 Balance sheet classification: Prepayment and other $ 53,850 Intangibles and other 1,019 Other long-term liabilities $ 25,897 $ 54,869 $ 25,897 At June 30, 2015 , we had a pre-tax net unrealized loss of $13.3 million classified in accumulated other comprehensive income that relates to all accounting hedges having contractual maturities through 2017. Assuming commodity prices and interest rates remain unchanged, an unrealized gain of $9.3 million will be effectively transferred from accumulated other comprehensive income into the statement of income as the hedging instruments contractually mature over the next twelve-month period.

Equity

Equity	6 Months Ended
	Jun. 30, 2015
Stockholders' Equity Note [Abstract]
Equity	Equity Changes to equity during the six months ended June 30, 2015 are presented below: HollyFrontier Stockholders’ Equity Noncontrolling Interest Total Equity (In thousands) Balance at December 31, 2014 $ 5,523,584 $ 577,135 $ 6,100,719 Net income 587,700 28,148 615,848 Dividends (125,192 ) — (125,192 ) Distributions to noncontrolling interest holders — (41,596 ) (41,596 ) Other comprehensive loss, net of tax (15,204 ) (319 ) (15,523 ) Equity-based compensation 12,461 1,761 14,222 Tax attributable to equity-based compensation (113 ) — (113 ) Purchase of treasury stock (1) (380,177 ) — (380,177 ) Purchase of HEP units for restricted grants — (247 ) (247 ) Other — 14 14 Balance at June 30, 2015 $ 5,603,059 $ 564,896 $ 6,167,955 (1) Includes 1,215 shares withheld under the terms of stock-based compensation agreements to provide funds for the payment of payroll and income taxes due at the vesting of share-based awards. In May 2015, our Board of Directors approved a $1 billion share repurchase program, which replaced all existing share repurchase programs, authorizing us to repurchase common stock in the open market or through privately negotiated transactions. The timing and amount of stock repurchases will depend on market conditions and corporate, regulatory and other relevant considerations. This program may be discontinued at any time by the Board of Directors. As of June 30, 2015 , we had remaining authorization to repurchase up to $734.9 million under this stock repurchase program. In addition, we are authorized by our Board of Directors to repurchase shares in an amount sufficient to offset shares issued under our compensation programs. During the second quarter of 2015, we entered into an accelerated share repurchase agreement (“ASR”) with a large financial institution to repurchase $300.0 million of our outstanding common stock. In May 2015, we repurchased 5.5 million shares, representing 80% of the amount paid based on then-market prices. The final number of shares ultimately to be repurchased under the ASR, as well as the final average price paid, will be based on the volume-weighted average market price of our common stock, less a discount, over the term of the ASR. The ASR is expected to be completed in the third quarter of 2015. The initial 5.5 million shares repurchased resulted in an immediate reduction to our common shares outstanding and are included in treasury stock at a cost of $240.0 million . For the remaining shares to be repurchased, we recorded a forward contract indexed to our own common stock in the amount of $60.0 million . This forward contract met the criteria for equity classification, and therefore is recorded to additional capital.

Other Comprehensive Income (Los

Other Comprehensive Income (Loss)	6 Months Ended
	Jun. 30, 2015
Other Comprehensive Income (Loss) [Abstract]
Other Comprehensive Income (Loss)	Other Comprehensive Income (Loss) The components and allocated tax effects of other comprehensive income (loss) are as follows: Before-Tax Tax Expense (Benefit) After-Tax (In thousands) Three Months Ended June 30, 2015 Net unrealized loss on marketable securities $ (63 ) $ (25 ) $ (38 ) Net unrealized loss on hedging instruments (5,809 ) (2,300 ) (3,509 ) Other comprehensive loss (5,872 ) (2,325 ) (3,547 ) Less other comprehensive income attributable to noncontrolling interest 135 — 135 Other comprehensive loss attributable to HollyFrontier stockholders $ (6,007 ) $ (2,325 ) $ (3,682 ) Three Months Ended June 30, 2014 Net unrealized gain on marketable securities $ 25 $ 17 $ 8 Net unrealized gain on hedging instruments 34,315 13,400 20,915 Other comprehensive income 34,340 13,417 20,923 Less other comprehensive loss attributable to noncontrolling interest (453 ) — (453 ) Other comprehensive income attributable to HollyFrontier stockholders $ 34,793 $ 13,417 $ 21,376 Six Months Ended June 30, 2015 Net unrealized gain on marketable securities $ 5 $ 2 $ 3 Net unrealized loss on hedging instruments (25,128 ) (9,602 ) (15,526 ) Other comprehensive loss (25,123 ) (9,600 ) (15,523 ) Less other comprehensive loss attributable to noncontrolling interest (319 ) — (319 ) Other comprehensive loss attributable to HollyFrontier stockholders $ (24,804 ) $ (9,600 ) $ (15,204 ) Six Months Ended June 30, 2014 Net unrealized gain on marketable securities $ 36 $ 14 $ 22 Net unrealized gain on hedging instruments 121,398 47,143 74,255 Net change in pension and other post-retirement benefit obligations (89 ) (35 ) (54 ) Other comprehensive income 121,345 47,122 74,223 Less other comprehensive loss attributable to noncontrolling interest (395 ) — (395 ) Other comprehensive income attributable to HollyFrontier stockholders $ 121,740 $ 47,122 $ 74,618 The following table presents the income statement line item effects for reclassifications out of accumulated other comprehensive income (“AOCI”): AOCI Component Gain (Loss) Reclassified From AOCI Income Statement Line Item (In thousands) Three Months Ended June 30, 2015 2014 Marketable securities $ 6 $ — Interest income 2 — Income tax expense 4 — Net of tax Hedging instruments: Commodity price swaps 49,752 (48,942 ) Sales and other revenues (30,964 ) 61,124 Cost of products sold (4,256 ) 745 Operating expenses Interest rate swaps (528 ) (553 ) Interest expense 14,004 12,374 5,543 4,918 Income tax expense 8,461 7,456 Net of tax 320 335 Noncontrolling interest 8,781 7,791 Net of tax and noncontrolling interest Total reclassifications for the period $ 8,785 $ 7,791 Six Months Ended June 30, 2015 2014 Marketable securities $ 4 $ 1 Interest income 42 — Gain on sale of assets 46 1 18 — Income tax expense 28 1 Net of tax Hedging instruments: Commodity price swaps 98,932 (74,273 ) Sales and other revenues (71,733 ) 90,441 Cost of products sold (8,245 ) 2,249 Operating expenses Interest rate swaps (1,059 ) (1,091 ) Interest expense 17,895 17,326 7,174 6,961 Income tax expense 10,721 10,365 Net of tax 642 661 Noncontrolling interest 11,363 11,026 Net of tax and noncontrolling interest Total reclassifications for the period $ 11,391 $ 11,027 Accumulated other comprehensive income in the equity section of our consolidated balance sheets includes: June 30, December 31, (In thousands) Unrealized gain on post-retirement benefit obligations $ 20,689 $ 20,689 Unrealized loss on marketable securities (82 ) (85 ) Unrealized gain (loss) on hedging instruments, net of noncontrolling interest (7,917 ) 7,290 Accumulated other comprehensive income $ 12,690 $ 27,894

Post-retirement Plan

Post-retirement Plan	6 Months Ended
	Jun. 30, 2015
Pension and Other Postretirement Benefit Expense [Abstract]
Post-retirement Plans	Post-retirement Plans We have a post-retirement healthcare and other benefits plan that is available to certain of our employees who satisfy certain age and service requirements. The net periodic benefit credit of this plan consisted of the following components: Three Months Ended June 30, Six Months Ended June 30, 2015 2014 2015 2014 (In thousands) Service cost – benefit earned during the period $ 424 $ 224 $ 848 $ 448 Interest cost on projected benefit obligations 205 160 410 319 Amortization of prior service credit (871 ) (1,074 ) (1,742 ) (2,148 ) Amortization of net loss 46 — 92 — Net periodic post-retirement credit $ (196 ) $ (690 ) $ (392 ) $ (1,381 ) Additionally, we had a program that provided transition benefit payments to certain employees that participated in a previously terminated defined benefit plan. The program extended through 2014 and provided payments subsequent to year-end provided the employee was employed by us on the last day of each year. The payments are based on each employee's years of service and eligible salary. Transition benefit costs under this program were $2.9 million for the three months ended June 30, 2014 and $5.5 million for the six months ended June 30, 2014 . In March 2015, we paid all remaining amounts owed to plan participants of $11.0 million .

Contingencies

Contingencies	6 Months Ended
	Jun. 30, 2015
Loss Contingency, Information about Litigation Matters [Abstract]
Contingencies	Contingencies We are a party to various litigation and legal proceedings which we believe, based on advice of counsel, will not either individually or in the aggregate have a material adverse effect on our financial condition, results of operations or cash flows. Pursuant to the 2007 Energy Independence and Security Act, the Environmental Protection Agency (“EPA”) promulgated the Renewable Fuel Standard 2 (“RFS2”) regulations reflecting the increased volume of renewable fuels mandated to be blended into the nation's fuel supply. The regulations, in part, require refiners to add annually increasing amounts of “renewable fuels” to their petroleum products or purchase credits, known as renewable identification numbers (“RINs”), in lieu of such blending. The EPA has not yet finalized the 2014 nor the 2015 percentage standards under its RFS2 program. In May 2015, the EPA revised the estimate of 2014 and 2015 percentage standard under its RFS2 program. Accordingly, in the second quarter of 2015, we recorded a $4.1 million reduction of amounts accrued through December 2014. The estimated quantity of renewable fuels or RINs that we are required to purchase and that have been accrued for as of June 30, 2015 and December 31, 2014, as well as for the six months and year then ended, are based on quantities proposed by the EPA as revised in May 2015.

Segment Information

Segment Information	6 Months Ended
	Jun. 30, 2015
Segment Reporting [Abstract]
Segment Information	Segment Information Our operations are organized into two reportable segments, Refining and HEP. Our operations that are not included in the Refining and HEP segments are included in Corporate and Other. Intersegment transactions are eliminated in our consolidated financial statements and are included in Consolidations and Eliminations. The Refining segment represents the operations of the El Dorado, Tulsa, Navajo, Cheyenne and Woods Cross Refineries and NK Asphalt (aggregated as a reportable segment). Refining activities involve the purchase and refining of crude oil and wholesale and branded marketing of refined products, such as gasoline, diesel fuel and jet fuel. These petroleum products are primarily marketed in the Mid-Continent, Southwest and Rocky Mountain regions of the United States. Additionally, the Refining segment includes specialty lubricant products produced at our Tulsa Refineries that are marketed throughout North America and are distributed in Central and South America. NK Asphalt operates various asphalt terminals in Arizona, New Mexico and Oklahoma. The HEP segment includes all of the operations of HEP, which owns and operates logistics assets consisting of petroleum product and crude oil pipelines and terminal, tankage and loading rack facilities in the Mid-Continent, Southwest and Rocky Mountain regions of the United States. The HEP segment also includes a 75% interest in UNEV (a consolidated subsidiary of HEP) and a 25% interest in the SLC Pipeline. Revenues from the HEP segment are earned through transactions with unaffiliated parties for pipeline transportation, rental and terminalling operations as well as revenues relating to pipeline transportation services provided for our refining operations. Due to certain basis differences, our reported amounts for the HEP segment may not agree to amounts reported in HEP’s periodic public filings. The accounting policies for our segments are the same as those described in the summary of significant accounting policies in our Annual Report on Form 10-K for the year ended December 31, 2014 . Refining HEP Corporate and Other Consolidations and Eliminations Consolidated Total (In thousands) Three Months Ended June 30, 2015 Sales and other revenues $ 3,686,493 $ 83,479 $ 151 $ (68,211 ) $ 3,701,912 Depreciation and amortization $ 70,435 $ 14,660 $ 2,915 $ (207 ) $ 87,803 Income (loss) from operations $ 576,313 $ 40,834 $ (26,739 ) $ (576 ) $ 589,832 Capital expenditures $ 128,336 $ 11,380 $ 4,578 $ — $ 144,294 Three Months Ended June 30, 2014 Sales and other revenues $ 5,361,914 $ 75,024 $ 506 $ (64,844 ) $ 5,372,600 Depreciation and amortization $ 83,840 $ 15,477 $ 2,280 $ (207 ) $ 101,390 Income (loss) from operations $ 292,214 $ 32,464 $ (27,802 ) $ (531 ) $ 296,345 Capital expenditures $ 92,334 $ 18,178 $ 9,976 $ — $ 120,488 Six Months Ended June 30, 2015 Sales and other revenues $ 6,675,773 $ 173,235 $ 369 $ (140,839 ) $ 6,708,538 Depreciation and amortization $ 133,710 $ 28,950 $ 5,569 $ (414 ) $ 167,815 Income (loss) from operations $ 950,214 $ 85,044 $ (55,688 ) $ (1,116 ) $ 978,454 Capital expenditures $ 258,097 $ 49,813 $ 9,003 $ — $ 316,913 Six Months Ended June 30, 2014 Sales and other revenues $ 10,136,994 $ 162,036 $ 1,621 $ (136,998 ) $ 10,163,653 Depreciation and amortization $ 147,381 $ 30,661 $ 4,310 $ (414 ) $ 181,938 Income (loss) from operations $ 543,423 $ 78,329 $ (53,357 ) $ (1,054 ) $ 567,341 Capital expenditures $ 192,277 $ 38,782 $ 13,710 $ — $ 244,769 June 30, 2015 Cash, cash equivalents and total investments in marketable securities $ 43 $ 10,424 $ 615,751 $ — $ 626,218 Total assets $ 7,268,245 $ 1,459,069 $ 727,036 $ (309,064 ) $ 9,145,286 Long-term debt $ — $ 900,905 $ 32,257 $ — $ 933,162 December 31, 2014 Cash, cash equivalents and total investments in marketable securities $ 88 $ 2,830 $ 1,039,177 $ — $ 1,042,095 Total assets $ 6,965,245 $ 1,434,572 $ 1,150,865 $ (320,042 ) $ 9,230,640 Long-term debt $ — $ 867,579 $ 187,311 $ — $ 1,054,890 HEP segment revenues from external customers were $15.2 million and $10.5 million for the three months ended June 30, 2015 and 2014 , respectively, and $32.7 million and $25.7 million for the six months ended June 30, 2015 and 2014 , respectively.

Supplemental Guarantor_Non-Guar

Supplemental Guarantor/Non-Guarantor Financial Information	6 Months Ended
	Jun. 30, 2015
Supplemental Guarantor / Non-Guarantor Financial Information [Abstract]
Supplemental Guarantor/Non-Guarantor Financial Information	Supplemental Guarantor/Non-Guarantor Financial Information Any borrowings pursuant to the HollyFrontier Credit Agreement are recourse to HollyFrontier and guaranteed by certain of our wholly-owned subsidiaries (“Guarantor Restricted Subsidiaries”). HEP, in which we have a 39% ownership interest at June 30, 2015 , and its subsidiaries (collectively, “Non-Guarantor Non-Restricted Subsidiaries”), and certain of our other subsidiaries (“Non-Guarantor Restricted Subsidiaries”) have not guaranteed these obligations. The following condensed consolidating financial information is provided for HollyFrontier Corporation (the “Parent”), the Guarantor Restricted Subsidiaries, the Non-Guarantor Restricted Subsidiaries and the Non-Guarantor Non-Restricted Subsidiaries. The information has been presented as if the Parent accounted for its ownership in the Guarantor Restricted Subsidiaries, and the Guarantor Restricted Subsidiaries accounted for the ownership of the Non-Guarantor Restricted Subsidiaries and Non-Guarantor Non-Restricted Subsidiaries, using the equity method of accounting. The Guarantor Restricted Subsidiaries and the Non-Guarantor Restricted Subsidiaries are collectively the “Restricted Subsidiaries.” Condensed Consolidating Balance Sheet June 30, 2015 Parent Guarantor Restricted Subsidiaries Non- Guarantor Restricted Subsidiaries Eliminations HollyFrontier Corp. Before Consolidation of HEP Non-Guarantor Non-Restricted Subsidiaries (HEP Segment) Consolidations and Eliminations Consolidated (In thousands) ASSETS Current assets: Cash and cash equivalents $ 222,905 $ — $ 30 $ — $ 222,935 $ 10,424 $ — $ 233,359 Marketable securities 392,859 — — — 392,859 — — 392,859 Accounts receivable, net 8,171 611,393 3,068 — 622,632 40,044 (36,569 ) 626,107 Intercompany accounts receivable — 718,610 442,187 (1,160,797 ) — — — — Inventories — 1,187,984 — — 1,187,984 1,934 — 1,189,918 Income taxes receivable 8,351 — — — 8,351 — — 8,351 Prepayments and other 13,363 59,273 — — 72,636 2,804 (6,495 ) 68,945 Total current assets 645,649 2,577,260 445,285 (1,160,797 ) 2,507,397 55,206 (43,064 ) 2,519,539 Properties, plants and equip, net 34,079 3,043,121 949 — 3,078,149 1,042,975 (252,729 ) 3,868,395 Investment in subsidiaries 6,868,051 335,342 — (7,203,393 ) — — — — Intangibles and other assets 29,262 2,371,616 25,000 (25,000 ) 2,400,878 360,888 (4,414 ) 2,757,352 Total assets $ 7,577,041 $ 8,327,339 $ 471,234 $ (8,389,190 ) $ 7,986,424 $ 1,459,069 $ (300,207 ) $ 9,145,286 LIABILITIES AND EQUITY Current liabilities: Accounts payable $ 3,543 $ 1,067,290 $ — $ — $ 1,070,833 $ 16,128 $ (36,569 ) $ 1,050,392 Intercompany accounts payable 1,160,797 — — (1,160,797 ) — — — — Income tax payable 7,569 — — — 7,569 — — 7,569 Accrued liabilities 41,886 50,843 1,127 — 93,856 25,885 (6,495 ) 113,246 Deferred income tax liabilities 69,284 — — — 69,284 — — 69,284 Total current liabilities 1,283,079 1,118,133 1,127 (1,160,797 ) 1,241,542 42,013 (43,064 ) 1,240,491 Long-term debt 25,000 32,257 — (25,000 ) 32,257 900,905 — 933,162 Liability to HEP — 227,304 — — 227,304 — (227,304 ) — Deferred income tax liabilities 627,205 — — — 627,205 332 — 627,537 Other long-term liabilities 43,822 81,594 — — 125,416 56,283 (5,558 ) 176,141 Investment in HEP — — 134,765 — 134,765 — (134,765 ) — Equity – HollyFrontier 5,597,935 6,868,051 335,342 (7,203,393 ) 5,597,935 365,071 (359,947 ) 5,603,059 Equity – noncontrolling interest — — — — — 94,465 470,431 564,896 Total liabilities and equity $ 7,577,041 $ 8,327,339 $ 471,234 $ (8,389,190 ) $ 7,986,424 $ 1,459,069 $ (300,207 ) $ 9,145,286 Condensed Consolidating Balance Sheet December 31, 2014 Parent Guarantor Restricted Subsidiaries Non- Guarantor Restricted Subsidiaries Eliminations HollyFrontier Corp. Before Consolidation of HEP Non-Guarantor Non-Restricted Subsidiaries (HEP Segment) Consolidations and Eliminations Consolidated (In thousands) ASSETS Current assets: Cash and cash equivalents $ 565,080 $ — $ 75 $ — $ 565,155 $ 2,830 $ — $ 567,985 Marketable securities 474,068 42 — — 474,110 — — 474,110 Accounts receivable, net 5,107 579,526 3,774 — 588,407 40,129 (38,631 ) 589,905 Intercompany accounts receivable — 171,341 397,540 (568,881 ) — — — — Inventories — 1,033,191 — — 1,033,191 1,940 — 1,035,131 Income taxes receivable 11,719 — — — 11,719 — — 11,719 Prepayments and other 14,734 95,194 — — 109,928 2,443 (8,223 ) 104,148 Total current assets 1,070,708 1,879,294 401,389 (568,881 ) 2,782,510 47,342 (46,854 ) 2,782,998 Properties, plants and equip, net 31,808 2,873,350 902 — 2,906,060 1,024,311 (259,832 ) 3,670,539 Investment in subsidiaries 5,912,233 291,912 — (6,204,145 ) — — — — Intangibles and other assets 30,082 2,388,844 25,000 (25,000 ) 2,418,926 362,919 (4,742 ) 2,777,103 Total assets $ 7,044,831 $ 7,433,400 $ 427,291 $ (6,798,026 ) $ 8,107,496 $ 1,434,572 $ (311,428 ) $ 9,230,640 LIABILITIES AND EQUITY Current liabilities: Accounts payable $ 11,457 $ 1,117,429 $ 2 $ — $ 1,128,888 $ 17,881 $ (38,631 ) $ 1,108,138 Intercompany accounts payable 568,881 — — (568,881 ) — — — — Income taxes payable 19,642 — — — 19,642 — — 19,642 Accrued liabilities 41,403 45,331 1,382 — 88,116 26,321 (8,223 ) 106,214 Deferred income tax liabilities 17,409 — — — 17,409 — — 17,409 Total current liabilities 658,792 1,162,760 1,384 (568,881 ) 1,254,055 44,202 (46,854 ) 1,251,403 Long-term debt 179,144 33,167 — (25,000 ) 187,311 867,579 — 1,054,890 Liability to HEP — 233,217 — — 233,217 — (233,217 ) — Deferred income tax liabilities 646,503 — — — 646,503 367 — 646,870 Other long-term liabilities 43,451 92,023 — — 135,474 47,170 (5,886 ) 176,758 Investment in HEP — — 133,995 — 133,995 — (133,995 ) — Equity – HollyFrontier 5,516,941 5,912,233 291,912 (6,204,145 ) 5,516,941 380,172 (373,529 ) 5,523,584 Equity – noncontrolling interest — — — — — 95,082 482,053 577,135 Total liabilities and equity $ 7,044,831 $ 7,433,400 $ 427,291 $ (6,798,026 ) $ 8,107,496 $ 1,434,572 $ (311,428 ) $ 9,230,640 Condensed Consolidating Statement of Income and Comprehensive Income Three Months Ended June 30, 2015 Parent Guarantor Restricted Subsidiaries Non- Guarantor Restricted Subsidiaries Eliminations HollyFrontier Corp. Before Consolidation of HEP Non-Guarantor Non-Restricted Subsidiaries (HEP Segment) Consolidations and Eliminations Consolidated (In thousands) Sales and other revenues $ 168 $ 3,686,476 $ — $ — $ 3,686,644 $ 83,479 $ (68,211 ) $ 3,701,912 Operating costs and expenses: Cost of products sold — 2,954,989 — — 2,954,989 — (67,514 ) 2,887,475 Lower of cost or market inventory valuation adjustment — (135,480 ) — — (135,480 ) — — (135,480 ) Operating expenses — 220,790 — — 220,790 25,289 86 246,165 General and administrative 22,808 571 42 — 23,421 2,696 — 26,117 Depreciation and amortization 2,582 74,120 8 — 76,710 14,660 (3,567 ) 87,803 Total operating costs and expenses 25,390 3,114,990 50 — 3,140,430 42,645 (70,995 ) 3,112,080 Income (loss) from operations (25,222 ) 571,486 (50 ) — 546,214 40,834 2,784 589,832 Other income (expense): Earnings (loss) of equity method investments 593,825 20,334 20,175 (614,159 ) 20,175 631 (20,175 ) 631 Interest income (expense) (537 ) 1,918 199 — 1,580 (9,053 ) (2,318 ) (9,791 ) Loss on early extinguishment of debt (1,368 ) — — — (1,368 ) — — (1,368 ) Gain on sale of assets 714 87 — — 801 72 — 873 592,634 22,339 20,374 (614,159 ) 21,188 (8,350 ) (22,493 ) (9,655 ) Income before income taxes 567,412 593,825 20,324 (614,159 ) 567,402 32,484 (19,709 ) 580,177 Income tax provision 207,054 — — — 207,054 (64 ) — 206,990 Net income 360,358 593,825 20,324 (614,159 ) 360,348 32,548 (19,709 ) 373,187 Less net income attributable to noncontrolling interest — — (10 ) — (10 ) 1,743 10,630 12,363 Net income attributable to HollyFrontier stockholders $ 360,358 $ 593,825 $ 20,334 $ (614,159 ) $ 360,358 $ 30,805 $ (30,339 ) $ 360,824 Comprehensive income attributable to HollyFrontier stockholders $ 356,676 $ 588,016 $ 20,422 $ (608,438 ) $ 356,676 $ 30,893 $ (30,427 ) $ 357,142 Condensed Consolidating Statement of Income and Comprehensive Income Three Months Ended June 30, 2014 Parent Guarantor Restricted Subsidiaries Non- Guarantor Restricted Subsidiaries Eliminations HollyFrontier Corp. Before Consolidation of HEP Non-Guarantor Non-Restricted Subsidiaries (HEP Segment) Consolidations and Eliminations Consolidated (In thousands) Sales and other revenues $ 179 $ 5,362,277 $ (36 ) $ — $ 5,362,420 $ 75,024 $ (64,844 ) $ 5,372,600 Operating costs and expenses: Cost of products sold — 4,738,586 — — 4,738,586 — (63,740 ) 4,674,846 Operating expenses — 247,451 — — 247,451 24,567 (364 ) 271,654 General and administrative 24,343 1,469 37 — 25,849 2,516 — 28,365 Depreciation and amortization 2,010 87,473 — — 89,483 15,477 (3,570 ) 101,390 Total operating costs and expenses 26,353 5,074,979 37 — 5,101,369 42,560 (67,674 ) 5,076,255 Income (loss) from operations (26,174 ) 287,298 (73 ) — 261,051 32,464 2,830 296,345 Other income (expense): Earnings (loss) of equity method investments 303,788 14,546 16,132 (319,990 ) 14,476 748 (16,132 ) (908 ) Interest income (expense) (373 ) 1,944 143 — 1,714 (8,329 ) (2,337 ) (8,952 ) 303,415 16,490 16,275 (319,990 ) 16,190 (7,581 ) (18,469 ) (9,860 ) Income before income taxes 277,241 303,788 16,202 (319,990 ) 277,241 24,883 (15,639 ) 286,485 Income tax provision 101,304 — — — 101,304 28 — 101,332 Net income 175,937 303,788 16,202 (319,990 ) 175,937 24,855 (15,639 ) 185,153 Less net income attributable to noncontrolling interest — — — — — 1,416 7,308 8,724 Net income attributable to HollyFrontier stockholders $ 175,937 $ 303,788 $ 16,202 $ (319,990 ) $ 175,937 $ 23,439 $ (22,947 ) $ 176,429 Comprehensive income attributable to HollyFrontier stockholders $ 197,313 $ 338,556 $ 15,909 $ (354,465 ) $ 197,313 $ 23,145 $ (22,653 ) $ 197,805 Condensed Consolidating Statement of Income and Comprehensive Income Six Months Ended June 30, 2015 Parent Guarantor Restricted Subsidiaries Non- Guarantor Restricted Subsidiaries Eliminations HollyFrontier Corp. Before Consolidation of HEP Non-Guarantor Non-Restricted Subsidiaries (HEP Segment) Consolidations and Eliminations Consolidated (In thousands) Sales and other revenues $ 274 $ 6,675,868 $ — $ — $ 6,676,142 $ 173,235 $ (140,839 ) $ 6,708,538 Operating costs and expenses: Cost of products sold — 5,277,870 — — 5,277,870 — (139,022 ) 5,138,848 Lower of cost or market inventory valuation adjustment — (142,026 ) — — (142,026 ) — — (142,026 ) Operating expenses — 456,793 — — 456,793 53,255 (287 ) 509,761 General and administrative 48,632 986 82 — 49,700 5,986 — 55,686 Depreciation and amortization 4,908 141,044 16 — 145,968 28,950 (7,103 ) 167,815 Total operating costs and expenses 53,540 5,734,667 98 — 5,788,305 88,191 (146,412 ) 5,730,084 Income (loss) from operations (53,266 ) 941,201 (98 ) — 887,837 85,044 5,573 978,454 Other income (expense): Earnings (loss) of equity method investments 978,226 32,369 40,617 (1,019,136 ) 32,076 1,365 (40,617 ) (7,176 ) Interest income (expense) (839 ) 3,967 374 — 3,502 (17,820 ) (4,665 ) (18,983 ) Loss on early extinguishment of debt (1,368 ) — — — (1,368 ) — — (1,368 ) Gain on sale of assets 720 689 — — 1,409 230 — 1,639 976,739 37,025 40,991 (1,019,136 ) 35,619 (16,225 ) (45,282 ) (25,888 ) Income before income taxes 923,473 978,226 40,893 (1,019,136 ) 923,456 68,819 (39,709 ) 952,566 Income tax provision 336,681 — — — 336,681 37 — 336,718 Net income 586,792 978,226 40,893 (1,019,136 ) 586,775 68,782 (39,709 ) 615,848 Less net income attributable to noncontrolling interest — — (17 ) — (17 ) 5,770 22,395 28,148 Net income attributable to HollyFrontier stockholders $ 586,792 $ 978,226 $ 40,910 $ (1,019,136 ) $ 586,792 $ 63,012 $ (62,104 ) $ 587,700 Comprehensive income attributable to HollyFrontier stockholders $ 571,588 $ 953,098 $ 40,703 $ (993,801 ) $ 571,588 $ 62,805 $ (61,897 ) $ 572,496 Condensed Consolidating Statement of Income and Comprehensive Income Six Months Ended June 30, 2014 Parent Guarantor Restricted Subsidiaries Non- Guarantor Restricted Subsidiaries Eliminations HollyFrontier Corp. Before Consolidation of HEP Non-Guarantor Non-Restricted Subsidiaries (HEP Segment) Consolidations and Eliminations Consolidated (In thousands) Sales and other revenues $ 280 $ 10,137,400 $ 935 $ — $ 10,138,615 $ 162,036 $ (136,998 ) $ 10,163,653 Operating costs and expenses: Cost of products sold — 8,948,308 — — 8,948,308 — (134,842 ) 8,813,466 Operating expenses — 498,927 — — 498,927 47,379 (686 ) 545,620 General and administrative 45,450 4,095 76 — 49,621 5,667 — 55,288 Depreciation and amortization 3,800 154,580 — — 158,380 30,661 (7,103 ) 181,938 Total operating costs and expenses 49,250 9,605,910 76 — 9,655,236 83,707 (142,631 ) 9,596,312 Income (loss) from operations (48,970 ) 531,490 859 — 483,379 78,329 5,633 567,341 Other income (expense): Earnings (loss) of equity method investments 566,147 30,568 32,415 (599,694 ) 29,436 1,270 (32,415 ) (1,709 ) Interest income (expense) (797 ) 4,089 273 — 3,565 (18,780 ) (4,679 ) (19,894 ) Loss on early extinguishment of debt — — — — — (7,677 ) — (7,677 ) 565,350 34,657 32,688 (599,694 ) 33,001 (25,187 ) (37,094 ) (29,280 ) Income before income taxes 516,380 566,147 33,547 (599,694 ) 516,380 53,142 (31,461 ) 538,061 Income tax provision 188,843 — — — 188,843 103 — 188,946 Net income 327,537 566,147 33,547 (599,694 ) 327,537 53,039 (31,461 ) 349,115 Less net income attributable to noncontrolling interest — — — — — 5,053 15,572 20,625 Net income attributable to HollyFrontier stockholders $ 327,537 $ 566,147 $ 33,547 $ (599,694 ) $ 327,537 $ 47,986 $ (47,033 ) $ 328,490 Comprehensive income attributable to HollyFrontier stockholders $ 402,155 $ 687,940 $ 33,291 $ (721,231 ) $ 402,155 $ 47,730 $ (46,777 ) $ 403,108 Condensed Consolidating Statement of Cash Flows Six Months Ended June 30, 2015 Parent Guarantor Restricted Subsidiaries Non- Guarantor Restricted Subsidiaries Eliminations HollyFrontier Corp. Before Consolidation of HEP Non-Guarantor Non-Restricted Subsidiaries (HEP Segment) Consolidations and Eliminations Consolidated (In thousands) Cash flows from operating activities $ (348,026 ) $ 803,368 $ 47,880 $ — $ 503,222 $ 110,611 $ (43,893 ) $ 569,940 Cash flows from investing activities Additions to properties, plants and equipment (7,180 ) (259,857 ) (63 ) — (267,100 ) — — (267,100 ) Additions to properties, plants and equipment – HEP — — — — — (49,813 ) — (49,813 ) Purchases of marketable securities (246,008 ) — — — (246,008 ) — — (246,008 ) Sales and maturities of marketable securities 327,310 — — — 327,310 — — 327,310 Other, net — 1,846 — — 1,846 386 — 2,232 Net advances to Parent — (544,445 ) (47,877 ) 592,322 — — — — 74,122 (802,456 ) (47,940 ) 592,322 (183,952 ) (49,427 ) — (233,379 ) Cash flows from financing activities Net borrowings under credit agreement – HEP — — — — — 33,000 — 33,000 Redemption of senior notes - HFC (155,156 ) — — — (155,156 ) — — (155,156 ) Purchase of treasury stock (320,132 ) — — — (320,132 ) — — (320,132 ) Accelerated stock repurchase forward contract (60,000 ) — — — (60,000 ) — — (60,000 ) Dividends (125,192 ) — — — (125,192 ) — — (125,192 ) Distributions to noncontrolling interest — — — — — (85,489 ) 43,893 (41,596 ) Other, net (113 ) (912 ) 15 — (1,010 ) (1,101 ) — (2,111 ) Net advances from subsidiaries 592,322 — — (592,322 ) — — — — (68,271 ) (912 ) 15 (592,322 ) (661,490 ) (53,590 ) 43,893 (671,187 ) Cash and cash equivalents Increase (decrease) for the period (342,175 ) — (45 ) — (342,220 ) 7,594 — (334,626 ) Beginning of period 565,080 — 75 — 565,155 2,830 — 567,985 End of period $ 222,905 $ — $ 30 $ — $ 222,935 $ 10,424 $ — $ 233,359 Condensed Consolidating Statement of Cash Flows Six Months Ended June 30, 2014 Parent Guarantor Restricted Subsidiaries Non- Guarantor Restricted Subsidiaries Eliminations HollyFrontier Corp. Before Consolidation of HEP Non-Guarantor Non-Restricted Subsidiaries (HEP Segment) Consolidations and Eliminations Consolidated (In thousands) Cash flows from operating activities $ (144,972 ) $ 773,845 $ 38,968 $ — $ 667,841 $ 92,667 $ (39,029 ) $ 721,479 Cash flows from investing activities: Additions to properties, plants and equipment (6,329 ) (199,132 ) (526 ) — (205,987 ) — — (205,987 ) Additions to properties, plants and equipment – HEP — — — — — (38,782 ) — (38,782 ) Purchases of marketable securities (498,080 ) — — — (498,080 ) — — (498,080 ) Sales and maturities of marketable securities 543,604 — — — 543,604 — — 543,604 Other, net — 5,021 — — 5,021 — — 5,021 Net advances to Parent — (582,930 ) (38,604 ) 621,534 — — — — 39,195 (777,041 ) (39,130 ) 621,534 (155,442 ) (38,782 ) — (194,224 ) Cash flows from financing activities: Net borrowings under credit agreement – HEP — — — — — 180,000 — 180,000 Redemption of senior notes — — — — — (156,188 ) — (156,188 ) Inventory repurchase obligation 5,964 5,964 — — 5,964 Purchase of treasury stock (20,135 ) — — — (20,135 ) — — (20,135 ) Dividends (323,088 ) — — — (323,088 ) — — (323,088 ) Distributions to noncontrolling interest — — — — — (77,577 ) 39,029 (38,548 ) Excess tax benefit from equity-based compensation 3,778 — — — 3,778 — — 3,778 Other, net — (808 ) 375 — (433 ) (406 ) — (839 ) Net advances from subsidiaries 621,534 — — (621,534 ) — — — — 282,089 5,156 375 (621,534 ) (333,914 ) (54,171 ) 39,029 (349,056 ) Cash and cash equivalents Increase (decrease) for the period: 176,312 1,960 213 — 178,485 (286 ) — 178,199 Beginning of period 931,920 1,817 14 — 933,751 6,352 — 940,103 End of period $ 1,108,232 $ 3,777 $ 227 $ — $ 1,112,236 $ 6,066 $ — $ 1,118,302

Description of Business and P23

Description of Business and Presentation of Financial Statements (Policy)	6 Months Ended
	Jun. 30, 2015
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Accounts Receivable	Accounts Receivable: Our accounts receivable consist of amounts due from customers that are primarily companies in the petroleum industry. Credit is extended based on our evaluation of the customer’s financial condition, and in certain circumstances collateral, such as letters of credit or guarantees, is required. We reserve for doubtful accounts based on our historical loss experience as well as specific accounts identified as high risk, which historically have been minimal. Credit losses are charged to the allowance for doubtful accounts when an account is deemed uncollectible. Our allowance for doubtful accounts was $2.3 million at June 30, 2015 and $2.4 million at December 31, 2014 .
Inventories	Inventories: Inventories are stated at the lower of cost, using the last-in, first-out (“LIFO”) method for crude oil, unfinished and finished refined products and the average cost method for materials and supplies, or market. In periods of rapidly declining prices, LIFO inventories may have to be written down to market value due to the higher costs assigned to LIFO layers in prior periods. In addition, the use of the LIFO inventory method may result in increases or decreases to cost of sales in years that inventory volumes decline as the result of charging cost of sales with LIFO inventory costs generated in prior periods. An actual valuation of inventory under the LIFO method is made at the end of each year based on the inventory levels at that time. Accordingly, interim LIFO calculations are based on management's estimates of expected year-end inventory levels and are subject to the final year-end LIFO inventory valuation.
Goodwill	Goodwill: We have goodwill that primarily arose from our merger with Frontier Oil Corporation on July 1, 2011. Goodwill represents the excess of the cost of an acquired entity over the fair value of the assets acquired and liabilities assumed. Goodwill is not subject to amortization and is tested annually or more frequently if events or circumstances indicate the possibility of impairment. As of June 30, 2015 , there have been no impairments to goodwill.
New Accounting Pronouncements, Policy [Policy Text Block]	New Accounting Pronouncements Revenue Recognition In May 2014, an accounting standard update (ASU 2014-09, “Revenue from Contracts with Customers”) was issued requiring revenue to be recognized when promised goods or services are transferred to customers in an amount that reflects the expected consideration for these goods or services. This standard has an effective date of January 1, 2018, and we are evaluating the impact of this standard.

Financial Instruments (Tables)

Financial Instruments (Tables)	6 Months Ended
	Jun. 30, 2015
Financial Instruments, Owned, at Fair Value [Abstract]
Estimated Fair Values Of Debt Instruments	The carrying amounts and estimated fair values of investments in marketable securities, derivative instruments and senior notes at June 30, 2015 and December 31, 2014 were as follows: Fair Value by Input Level Financial Instrument Carrying Amount Fair Value Level 1 Level 2 Level 3 (In thousands) June 30, 2015 Assets: Marketable securities $ 392,859 $ 392,859 $ — $ 392,859 $ — Commodity price swaps 131,333 131,333 — 131,333 — Forward contracts 76 76 — 76 — HEP interest rate swaps 134 134 — 134 — Total assets $ 524,402 $ 524,402 $ — $ 524,402 $ — Liabilities: NYMEX futures contracts $ 236 $ 236 $ 236 $ — $ — Commodity price swaps 126,983 126,983 — 126,983 — Forward contracts 2,143 2,143 — 2,143 — HEP senior notes 296,905 295,875 — 295,875 — HEP interest rate swaps 707 707 — 707 — Total liabilities $ 426,974 $ 425,944 $ 236 $ 425,708 $ — Fair Value by Input Level Financial Instrument Carrying Amount Fair Value Level 1 Level 2 Level 3 (In thousands) December 31, 2014 Assets: Marketable securities $ 474,110 $ 474,110 $ — $ 474,110 $ — NYMEX futures contracts 17,619 17,619 17,619 — — Commodity price swaps 208,296 208,296 — 208,296 — HEP interest rate swaps 1,019 1,019 — 1,019 — Total assets $ 701,044 $ 701,044 $ 17,619 $ 683,425 $ — Liabilities: Commodity price swaps $ 196,897 $ 196,897 $ — $ 196,897 $ — HollyFrontier senior notes 154,144 155,250 — 155,250 — HEP senior notes 296,579 291,000 — 291,000 — HEP interest rate swaps 1,065 1,065 — 1,065 — Total liabilities $ 648,685 $ 644,212 $ — $ 644,212 $ —
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation	The following table presents the changes in fair value of our Level 3 assets and liabilities (all related to derivative instruments) for the three and six months ended June 30, 2015 and 2014 : Three Months Ended June 30, Six Months Ended June 30, Level 3 Financial Instruments 2015 2014 2015 2014 (In thousands) Liability balance at beginning of period $ (2,552 ) $ (22,473 ) $ — $ (35,318 ) Change in fair value: Recognized in other comprehensive income 6,404 (90,559 ) 3,852 (112,695 ) Recognized in cost of products sold — (7,084 ) — 1,885 Settlement date fair value of contractual maturities: Recognized in sales and other revenues (3,852 ) 48,942 (3,852 ) 74,273 Recognized in cost of products sold — (4,463 ) — (3,782 ) Liability balance at end of period $ — $ (75,637 ) $ — $ (75,637 )

Earnings Per Share (Tables)

Earnings Per Share (Tables)	6 Months Ended
	Jun. 30, 2015
Earnings Per Share [Abstract]
Schedule Of Earnings Per Share	The following is a reconciliation of the components of the basic and diluted per share computations for net income attributable to HollyFrontier stockholders: Three Months Ended June 30, Six Months Ended June 30, 2015 2014 2015 2014 (In thousands, except per share data) Net income attributable to HollyFrontier stockholders $ 360,824 $ 176,429 $ 587,700 $ 328,490 Participating securities' share in earnings 1,036 475 1,677 945 Net income attributable to common shares $ 359,788 $ 175,954 $ 586,023 $ 327,545 Average number of shares of common stock outstanding 191,355 198,139 193,202 198,217 Effect of dilutive variable restricted shares and performance share units (1) 99 241 77 191 Average number of shares of common stock outstanding assuming dilution 191,454 198,380 193,279 198,408 Basic earnings per share $ 1.88 $ 0.89 $ 3.03 $ 1.65 Diluted earnings per share $ 1.88 $ 0.89 $ 3.03 $ 1.65 (1) Excludes anti-dilutive restricted and performance share units of: 349 26 379 2

Stock-Based Compensation (Table

Stock-Based Compensation (Tables)	6 Months Ended
	Jun. 30, 2015
Share-based Compensation [Abstract]
Summary Of Restricted Stock Activity	A summary of restricted stock and restricted stock unit activity and changes during the six months ended June 30, 2015 is presented below: Restricted Stock and Restricted Stock Units Grants Weighted Average Grant Date Fair Value Aggregate Intrinsic Value ($000) Outstanding at January 1, 2015 (non-vested) 669,777 $ 44.12 Granted 9,894 37.68 Vesting (transfer/conversion to common stock) (2,999 ) 44.48 Forfeited (13,106 ) 43.81 Outstanding at June 30, 2015 (non-vested) 663,566 $ 44.03 $ 28,268
Summary Of Performance Share Unit Activity	A summary of performance share unit activity and changes during the six months ended June 30, 2015 is presented below: Performance Share Units Grants Outstanding at January 1, 2015 (non-vested) 725,054 Granted 4,242 Forfeited (25,973 ) Outstanding at June 30, 2015 (non-vested) 703,323

Cash and Cash Equivalents and27

Cash and Cash Equivalents and Investments in Marketable Securities (Tables)	6 Months Ended
	Jun. 30, 2015
Cash, Cash Equivalents, and Short-term Investments [Abstract]
Available-For-Sale Securities	The following is a summary of our marketable securities: Amortized Cost Gross Unrealized Gain Gross Unrealized Loss Fair Value (Net Carrying Amount) (In thousands) June 30, 2015 Certificates of deposit $ 20,998 $ 11 $ — $ 21,009 Commercial paper 29,957 17 — 29,974 Corporate debt securities 68,339 2 (43 ) 68,298 State and political subdivisions debt securities 273,700 11 (133 ) 273,578 Total marketable securities $ 392,994 $ 41 $ (176 ) $ 392,859 December 31, 2014 Certificates of deposit $ 54,000 $ 10 $ — $ 54,010 Commercial paper 52,297 7 (4 ) 52,300 Corporate debt securities 136,181 1 (94 ) 136,088 State and political subdivisions debt securities 231,819 5 (112 ) 231,712 Total marketable securities $ 474,297 $ 23 $ (210 ) $ 474,110

Inventories (Tables)

Inventories (Tables)	6 Months Ended
	Jun. 30, 2015
Inventory, Net [Abstract]
Inventory Components	Inventory consists of the following components: June 30, December 31, 2014 (In thousands) Crude oil $ 508,984 $ 581,592 Other raw materials and unfinished products (1) 191,102 204,467 Finished products (2) 617,996 531,523 Lower of cost or market reserve (255,452 ) (397,478 ) Process chemicals (3) 4,903 4,028 Repair and maintenance supplies and other 122,385 110,999 Total inventory $ 1,189,918 $ 1,035,131 (1) Other raw materials and unfinished products include feedstocks and blendstocks, other than crude. (2) Finished products include gasolines, jet fuels, diesels, lubricants, asphalts, LPG’s and residual fuels. (3) Process chemicals include additives and other chemicals.

Debt (Tables)

Debt (Tables)	6 Months Ended
	Jun. 30, 2015
Debt Disclosure [Abstract]
Carrying Amounts Of Long-Term Debt	The carrying amounts of long-term debt are as follows: June 30, December 31, (In thousands) 6.875% Senior Notes Principal $ — $ 150,000 Unamortized premium — 4,144 — 154,144 Financing Obligation 32,257 33,167 Total HollyFrontier long-term debt 32,257 187,311 HEP Credit Agreement 604,000 571,000 HEP 6.5% Senior Notes Principal 300,000 300,000 Unamortized discount (3,095 ) (3,421 ) 296,905 296,579 Total HEP long-term debt 900,905 867,579 Total long-term debt $ 933,162 $ 1,054,890

Derivative Instruments And He30

Derivative Instruments And Hedging Activities (Tables)	6 Months Ended
	Jun. 30, 2015
Derivative Instruments, Gain (Loss) [Line Items]
Schedule of Derivative Instruments, Gain (Loss) in Statement of Financial Performance	The following table presents the pre-tax effect on other comprehensive income (“OCI”) and earnings due to fair value adjustments and maturities of commodity price swaps and forward sales under hedge accounting: Unrealized Gain (Loss) Recognized in OCI Gain (Loss) Recognized in Earnings Due to Settlements Gain (Loss) Attributable to Hedge Ineffectiveness Recognized in Earnings Location Amount Location Amount (In thousands) Three Months Ended June 30, 2015 Change in fair value $ 8,501 Sales and other revenues $ 49,752 Gain reclassified to earnings due to settlements (14,802 ) Cost of products sold (30,964 ) Sales and other revenues $ (140 ) Amortization of discontinued hedges reclassified to earnings 270 Operating expenses (4,256 ) Cost of products sold 2,494 Total $ (6,031 ) $ 14,532 $ 2,354 Three Months Ended June 30, 2014 Change in fair value $ 47,988 Sales and other revenues $ (48,942 ) Gain reclassified to earnings due to settlements (13,197 ) Cost of products sold 61,124 Amortization of discontinued hedges reclassified to earnings 270 Operating expenses 745 Operating expenses $ 1,354 Total $ 35,061 $ 12,927 $ 1,354 Six Months Ended June 30, 2015 Change in fair value $ (5,647 ) Sales and other revenues $ 98,932 Sales and other revenues $ (274 ) Gain reclassified to earnings due to settlements (19,494 ) Cost of products sold (71,733 ) Cost of products sold 3,738 Amortization of discontinued hedge reclassified to earnings 540 Operating expenses (8,245 ) Operating expenses 547 Total $ (24,601 ) $ 18,954 $ 4,011 Six Months Ended June 30, 2014 Change in fair value $ 140,466 Sales and other revenues $ (74,273 ) Gain reclassified to earnings due to settlements (18,957 ) Cost of products sold 90,441 Amortization of discontinued hedge reclassified to earnings 540 Operating expenses 2,249 Operating expenses $ (806 ) Total $ 122,049 $ 18,417 $ (806 )
Schedule of Notional Amounts of Outstanding Derivatives Serving as Cash Flow Hedges	As of June 30, 2015 , we have the following notional contract volumes related to outstanding derivative instruments serving as cash flow hedges against price risk on forecasted purchases of natural gas and crude oil and sales of refined products: Notional Contract Volumes by Year of Maturity Derivative Instrument Total Outstanding Notional 2015 2016 2017 Unit of Measure Natural gas - long 24,000,000 4,800,000 9,600,000 9,600,000 MMBTU WTI crude oil - long 2,208,000 2,208,000 — — Barrels Ultra-low sulfur diesel - short 2,208,000 2,208,000 — — Barrels Forward diesel sales 1,500,000 1,500,000 — — Barrels Forward diesel purchases 1,125,000 1,125,000 — — Barrels
Schedule of Realized Gain (Loss)	The following table presents the pre-tax effect on income due to maturities and fair value adjustments of our economic hedges: Three Months Ended June 30, Six Months Ended June 30, Location of Gain (Loss) Recognized in Income 2015 2014 2015 2014 (In thousands) Cost of products sold $ 5,292 $ (24,432 ) $ 27,574 $ (24,406 ) Operating expenses (248 ) (140 ) (544 ) (188 ) Total $ 5,044 $ (24,572 ) $ 27,030 $ (24,594 )
Schedule of Notional Amounts of Outstanding Derivatives Serving as Economic Hedges	As of June 30, 2015 , we have the following notional contract volumes related to our outstanding derivative contracts serving as economic hedges: Notional Contract Volumes by Year of Maturity Derivative Instrument Total Outstanding Notional 2015 2016 2017 Unit of Measure Commodity price swap (crude basis spread) - long 4,412,000 3,680,000 732,000 — Barrels Commodity price swap (natural gas basis spread) - long 17,820,000 4,020,000 6,900,000 6,900,000 MMBTU Commodity price swap (natural gas) - long 24,000,000 4,800,000 9,600,000 9,600,000 MMBTU Commodity price swap (natural gas) - short 24,000,000 4,800,000 9,600,000 9,600,000 MMBTU NYMEX futures (WTI) - short 1,095,000 1,095,000 — — Barrels
Schedule of Interest Rate Hedges	The following table presents the pre-tax effect on other comprehensive income and earnings due to fair value adjustments and maturities of HEP's interest rate swaps under hedge accounting: Unrealized Gain (Loss) Recognized in OCI Loss Recognized in Earnings Due to Settlements Location Amount (In thousands) Three Months Ended June 30, 2015 Interest rate swaps Change in fair value $ (306 ) Loss reclassified to earnings due to settlements 528 Interest expense $ (528 ) Total $ 222 $ (528 ) Three Months Ended June 30, 2014 Interest rate swaps Change in fair value $ (1,299 ) Loss reclassified to earnings due to settlements 553 Interest expense $ (553 ) Total $ (746 ) $ (553 ) Six Months Ended June 30, 2015 Interest rate swaps Change in fair value $ (1,586 ) Loss reclassified to earnings due to settlements 1,059 Interest expense $ (1,059 ) Total $ (527 ) $ (1,059 ) Six Months Ended June 30, 2014 Interest rate swaps Change in fair value $ (1,742 ) Loss reclassified to earnings due to settlements 1,091 Interest expense $ (1,091 ) Total $ (651 ) $ (1,091 )
Schedule of Fair Value and Balance Sheet Location of Outstanding Derivatives	The following table presents the fair value and balance sheet locations of our outstanding derivative instruments. These amounts are presented on a gross basis with offsetting balances that reconcile to a net asset or liability position in our consolidated balance sheets. We present on a net basis to reflect the net settlement of these positions in accordance with provisions of our master netting arrangements. Derivatives in Net Asset Position Derivatives in Net Liability Position Gross Assets Gross Liabilities Offset in Balance Sheet Net Assets Recognized in Balance Sheet Gross Liabilities Gross Assets Offset in Balance Sheet Net Liabilities Recognized in Balance Sheet (In thousands) June 30, 2015 Derivatives designated as cash flow hedging instruments: Commodity price swap contracts $ 62,370 $ (49,711 ) $ 12,659 $ 42,647 $ (21,026 ) $ 21,621 Forward contracts 223 (166 ) 57 2,563 (439 ) 2,124 Interest rate swap contracts 134 — 134 707 — 707 $ 62,727 $ (49,877 ) $ 12,850 $ 45,917 $ (21,465 ) $ 24,452 Derivatives not designated as cash flow hedging instruments: Commodity price swap contracts $ 24,580 $ (7,461 ) $ 17,119 $ 27,282 $ (23,475 ) $ 3,807 NYMEX futures contracts — — — 236 — 236 $ 24,580 $ (7,461 ) $ 17,119 $ 27,518 $ (23,475 ) $ 4,043 Total net balance $ 29,969 $ 28,495 Balance sheet classification: Prepayment and other $ 29,295 Accrued liabilities $ 4,727 Intangibles and other 674 Other long-term liabilities 23,768 $ 29,969 $ 28,495 Derivatives in Net Asset Position Derivatives in Net Liability Position Gross Assets Gross Liabilities Offset in Balance Sheet Net Assets Recognized in Balance Sheet Gross Liabilities Gross Assets Offset in Balance Sheet Net Liabilities Recognized in Balance Sheet (In thousands) December 31, 2014 Derivatives designated as cash flow hedging instruments: Commodity price swap contracts $ 173,658 $ (142,115 ) $ 31,543 $ 21,441 $ — $ 21,441 Interest rate swap contracts 1,019 — 1,019 1,065 — 1,065 $ 174,677 $ (142,115 ) $ 32,562 $ 22,506 $ — $ 22,506 Derivatives not designated as cash flow hedging instruments: Commodity price swap contracts $ 17,630 $ (12,942 ) $ 4,688 $ 20,398 $ (17,007 ) $ 3,391 NYMEX futures contracts 17,619 — 17,619 — — — $ 35,249 $ (12,942 ) $ 22,307 $ 20,398 $ (17,007 ) $ 3,391 Total net balance $ 54,869 $ 25,897 Balance sheet classification: Prepayment and other $ 53,850 Intangibles and other 1,019 Other long-term liabilities $ 25,897 $ 54,869 $ 25,897

Equity (Tables)

Equity (Tables)	6 Months Ended
	Jun. 30, 2015
Stockholders' Equity Note [Abstract]
Changes To Equity	Changes to equity during the six months ended June 30, 2015 are presented below: HollyFrontier Stockholders’ Equity Noncontrolling Interest Total Equity (In thousands) Balance at December 31, 2014 $ 5,523,584 $ 577,135 $ 6,100,719 Net income 587,700 28,148 615,848 Dividends (125,192 ) — (125,192 ) Distributions to noncontrolling interest holders — (41,596 ) (41,596 ) Other comprehensive loss, net of tax (15,204 ) (319 ) (15,523 ) Equity-based compensation 12,461 1,761 14,222 Tax attributable to equity-based compensation (113 ) — (113 ) Purchase of treasury stock (1) (380,177 ) — (380,177 ) Purchase of HEP units for restricted grants — (247 ) (247 ) Other — 14 14 Balance at June 30, 2015 $ 5,603,059 $ 564,896 $ 6,167,955 (1) Includes 1,215 shares withheld under the terms of stock-based compensation agreements to provide funds for the payment of payroll and income taxes due at the vesting of share-based awards.

Other Comprehensive Income (L32

Other Comprehensive Income (Loss) (Tables)	6 Months Ended
	Jun. 30, 2015
Other Comprehensive Income (Loss) [Abstract]
Components And Allocated Tax Effects Of Other Comprehensive Income (Loss)	The components and allocated tax effects of other comprehensive income (loss) are as follows: Before-Tax Tax Expense (Benefit) After-Tax (In thousands) Three Months Ended June 30, 2015 Net unrealized loss on marketable securities $ (63 ) $ (25 ) $ (38 ) Net unrealized loss on hedging instruments (5,809 ) (2,300 ) (3,509 ) Other comprehensive loss (5,872 ) (2,325 ) (3,547 ) Less other comprehensive income attributable to noncontrolling interest 135 — 135 Other comprehensive loss attributable to HollyFrontier stockholders $ (6,007 ) $ (2,325 ) $ (3,682 ) Three Months Ended June 30, 2014 Net unrealized gain on marketable securities $ 25 $ 17 $ 8 Net unrealized gain on hedging instruments 34,315 13,400 20,915 Other comprehensive income 34,340 13,417 20,923 Less other comprehensive loss attributable to noncontrolling interest (453 ) — (453 ) Other comprehensive income attributable to HollyFrontier stockholders $ 34,793 $ 13,417 $ 21,376 Six Months Ended June 30, 2015 Net unrealized gain on marketable securities $ 5 $ 2 $ 3 Net unrealized loss on hedging instruments (25,128 ) (9,602 ) (15,526 ) Other comprehensive loss (25,123 ) (9,600 ) (15,523 ) Less other comprehensive loss attributable to noncontrolling interest (319 ) — (319 ) Other comprehensive loss attributable to HollyFrontier stockholders $ (24,804 ) $ (9,600 ) $ (15,204 ) Six Months Ended June 30, 2014 Net unrealized gain on marketable securities $ 36 $ 14 $ 22 Net unrealized gain on hedging instruments 121,398 47,143 74,255 Net change in pension and other post-retirement benefit obligations (89 ) (35 ) (54 ) Other comprehensive income 121,345 47,122 74,223 Less other comprehensive loss attributable to noncontrolling interest (395 ) — (395 ) Other comprehensive income attributable to HollyFrontier stockholders $ 121,740 $ 47,122 $ 74,618
Reclassifications from Other Comprehensive Income to Income Statement	The following table presents the income statement line item effects for reclassifications out of accumulated other comprehensive income (“AOCI”): AOCI Component Gain (Loss) Reclassified From AOCI Income Statement Line Item (In thousands) Three Months Ended June 30, 2015 2014 Marketable securities $ 6 $ — Interest income 2 — Income tax expense 4 — Net of tax Hedging instruments: Commodity price swaps 49,752 (48,942 ) Sales and other revenues (30,964 ) 61,124 Cost of products sold (4,256 ) 745 Operating expenses Interest rate swaps (528 ) (553 ) Interest expense 14,004 12,374 5,543 4,918 Income tax expense 8,461 7,456 Net of tax 320 335 Noncontrolling interest 8,781 7,791 Net of tax and noncontrolling interest Total reclassifications for the period $ 8,785 $ 7,791 Six Months Ended June 30, 2015 2014 Marketable securities $ 4 $ 1 Interest income 42 — Gain on sale of assets 46 1 18 — Income tax expense 28 1 Net of tax Hedging instruments: Commodity price swaps 98,932 (74,273 ) Sales and other revenues (71,733 ) 90,441 Cost of products sold (8,245 ) 2,249 Operating expenses Interest rate swaps (1,059 ) (1,091 ) Interest expense 17,895 17,326 7,174 6,961 Income tax expense 10,721 10,365 Net of tax 642 661 Noncontrolling interest 11,363 11,026 Net of tax and noncontrolling interest Total reclassifications for the period $ 11,391 $ 11,027
Accumulated Other Comprehensive Loss In Equity	Accumulated other comprehensive income in the equity section of our consolidated balance sheets includes: June 30, December 31, (In thousands) Unrealized gain on post-retirement benefit obligations $ 20,689 $ 20,689 Unrealized loss on marketable securities (82 ) (85 ) Unrealized gain (loss) on hedging instruments, net of noncontrolling interest (7,917 ) 7,290 Accumulated other comprehensive income $ 12,690 $ 27,894

Post-retirement Plan (Tables)

Post-retirement Plan (Tables)	6 Months Ended
	Jun. 30, 2015
Pension and Other Postretirement Benefit Expense [Abstract]
Net Periodic Pension Expense	The net periodic benefit credit of this plan consisted of the following components: Three Months Ended June 30, Six Months Ended June 30, 2015 2014 2015 2014 (In thousands) Service cost – benefit earned during the period $ 424 $ 224 $ 848 $ 448 Interest cost on projected benefit obligations 205 160 410 319 Amortization of prior service credit (871 ) (1,074 ) (1,742 ) (2,148 ) Amortization of net loss 46 — 92 — Net periodic post-retirement credit $ (196 ) $ (690 ) $ (392 ) $ (1,381 )

Segment Information (Tables)

Segment Information (Tables)	6 Months Ended
	Jun. 30, 2015
Segment Reporting [Abstract]
Schedule Of Segment Reporting Information	Refining HEP Corporate and Other Consolidations and Eliminations Consolidated Total (In thousands) Three Months Ended June 30, 2015 Sales and other revenues $ 3,686,493 $ 83,479 $ 151 $ (68,211 ) $ 3,701,912 Depreciation and amortization $ 70,435 $ 14,660 $ 2,915 $ (207 ) $ 87,803 Income (loss) from operations $ 576,313 $ 40,834 $ (26,739 ) $ (576 ) $ 589,832 Capital expenditures $ 128,336 $ 11,380 $ 4,578 $ — $ 144,294 Three Months Ended June 30, 2014 Sales and other revenues $ 5,361,914 $ 75,024 $ 506 $ (64,844 ) $ 5,372,600 Depreciation and amortization $ 83,840 $ 15,477 $ 2,280 $ (207 ) $ 101,390 Income (loss) from operations $ 292,214 $ 32,464 $ (27,802 ) $ (531 ) $ 296,345 Capital expenditures $ 92,334 $ 18,178 $ 9,976 $ — $ 120,488 Six Months Ended June 30, 2015 Sales and other revenues $ 6,675,773 $ 173,235 $ 369 $ (140,839 ) $ 6,708,538 Depreciation and amortization $ 133,710 $ 28,950 $ 5,569 $ (414 ) $ 167,815 Income (loss) from operations $ 950,214 $ 85,044 $ (55,688 ) $ (1,116 ) $ 978,454 Capital expenditures $ 258,097 $ 49,813 $ 9,003 $ — $ 316,913 Six Months Ended June 30, 2014 Sales and other revenues $ 10,136,994 $ 162,036 $ 1,621 $ (136,998 ) $ 10,163,653 Depreciation and amortization $ 147,381 $ 30,661 $ 4,310 $ (414 ) $ 181,938 Income (loss) from operations $ 543,423 $ 78,329 $ (53,357 ) $ (1,054 ) $ 567,341 Capital expenditures $ 192,277 $ 38,782 $ 13,710 $ — $ 244,769 June 30, 2015 Cash, cash equivalents and total investments in marketable securities $ 43 $ 10,424 $ 615,751 $ — $ 626,218 Total assets $ 7,268,245 $ 1,459,069 $ 727,036 $ (309,064 ) $ 9,145,286 Long-term debt $ — $ 900,905 $ 32,257 $ — $ 933,162 December 31, 2014 Cash, cash equivalents and total investments in marketable securities $ 88 $ 2,830 $ 1,039,177 $ — $ 1,042,095 Total assets $ 6,965,245 $ 1,434,572 $ 1,150,865 $ (320,042 ) $ 9,230,640 Long-term debt $ — $ 867,579 $ 187,311 $ — $ 1,054,890

Supplemental Guarantor_Non-Gu35

Supplemental Guarantor/Non-Guarantor Financial Information (Tables)	6 Months Ended
	Jun. 30, 2015
Supplemental Guarantor / Non-Guarantor Financial Information [Abstract]
Condensed Consolidating Balance Sheet	Condensed Consolidating Balance Sheet June 30, 2015 Parent Guarantor Restricted Subsidiaries Non- Guarantor Restricted Subsidiaries Eliminations HollyFrontier Corp. Before Consolidation of HEP Non-Guarantor Non-Restricted Subsidiaries (HEP Segment) Consolidations and Eliminations Consolidated (In thousands) ASSETS Current assets: Cash and cash equivalents $ 222,905 $ — $ 30 $ — $ 222,935 $ 10,424 $ — $ 233,359 Marketable securities 392,859 — — — 392,859 — — 392,859 Accounts receivable, net 8,171 611,393 3,068 — 622,632 40,044 (36,569 ) 626,107 Intercompany accounts receivable — 718,610 442,187 (1,160,797 ) — — — — Inventories — 1,187,984 — — 1,187,984 1,934 — 1,189,918 Income taxes receivable 8,351 — — — 8,351 — — 8,351 Prepayments and other 13,363 59,273 — — 72,636 2,804 (6,495 ) 68,945 Total current assets 645,649 2,577,260 445,285 (1,160,797 ) 2,507,397 55,206 (43,064 ) 2,519,539 Properties, plants and equip, net 34,079 3,043,121 949 — 3,078,149 1,042,975 (252,729 ) 3,868,395 Investment in subsidiaries 6,868,051 335,342 — (7,203,393 ) — — — — Intangibles and other assets 29,262 2,371,616 25,000 (25,000 ) 2,400,878 360,888 (4,414 ) 2,757,352 Total assets $ 7,577,041 $ 8,327,339 $ 471,234 $ (8,389,190 ) $ 7,986,424 $ 1,459,069 $ (300,207 ) $ 9,145,286 LIABILITIES AND EQUITY Current liabilities: Accounts payable $ 3,543 $ 1,067,290 $ — $ — $ 1,070,833 $ 16,128 $ (36,569 ) $ 1,050,392 Intercompany accounts payable 1,160,797 — — (1,160,797 ) — — — — Income tax payable 7,569 — — — 7,569 — — 7,569 Accrued liabilities 41,886 50,843 1,127 — 93,856 25,885 (6,495 ) 113,246 Deferred income tax liabilities 69,284 — — — 69,284 — — 69,284 Total current liabilities 1,283,079 1,118,133 1,127 (1,160,797 ) 1,241,542 42,013 (43,064 ) 1,240,491 Long-term debt 25,000 32,257 — (25,000 ) 32,257 900,905 — 933,162 Liability to HEP — 227,304 — — 227,304 — (227,304 ) — Deferred income tax liabilities 627,205 — — — 627,205 332 — 627,537 Other long-term liabilities 43,822 81,594 — — 125,416 56,283 (5,558 ) 176,141 Investment in HEP — — 134,765 — 134,765 — (134,765 ) — Equity – HollyFrontier 5,597,935 6,868,051 335,342 (7,203,393 ) 5,597,935 365,071 (359,947 ) 5,603,059 Equity – noncontrolling interest — — — — — 94,465 470,431 564,896 Total liabilities and equity $ 7,577,041 $ 8,327,339 $ 471,234 $ (8,389,190 ) $ 7,986,424 $ 1,459,069 $ (300,207 ) $ 9,145,286 Condensed Consolidating Balance Sheet December 31, 2014 Parent Guarantor Restricted Subsidiaries Non- Guarantor Restricted Subsidiaries Eliminations HollyFrontier Corp. Before Consolidation of HEP Non-Guarantor Non-Restricted Subsidiaries (HEP Segment) Consolidations and Eliminations Consolidated (In thousands) ASSETS Current assets: Cash and cash equivalents $ 565,080 $ — $ 75 $ — $ 565,155 $ 2,830 $ — $ 567,985 Marketable securities 474,068 42 — — 474,110 — — 474,110 Accounts receivable, net 5,107 579,526 3,774 — 588,407 40,129 (38,631 ) 589,905 Intercompany accounts receivable — 171,341 397,540 (568,881 ) — — — — Inventories — 1,033,191 — — 1,033,191 1,940 — 1,035,131 Income taxes receivable 11,719 — — — 11,719 — — 11,719 Prepayments and other 14,734 95,194 — — 109,928 2,443 (8,223 ) 104,148 Total current assets 1,070,708 1,879,294 401,389 (568,881 ) 2,782,510 47,342 (46,854 ) 2,782,998 Properties, plants and equip, net 31,808 2,873,350 902 — 2,906,060 1,024,311 (259,832 ) 3,670,539 Investment in subsidiaries 5,912,233 291,912 — (6,204,145 ) — — — — Intangibles and other assets 30,082 2,388,844 25,000 (25,000 ) 2,418,926 362,919 (4,742 ) 2,777,103 Total assets $ 7,044,831 $ 7,433,400 $ 427,291 $ (6,798,026 ) $ 8,107,496 $ 1,434,572 $ (311,428 ) $ 9,230,640 LIABILITIES AND EQUITY Current liabilities: Accounts payable $ 11,457 $ 1,117,429 $ 2 $ — $ 1,128,888 $ 17,881 $ (38,631 ) $ 1,108,138 Intercompany accounts payable 568,881 — — (568,881 ) — — — — Income taxes payable 19,642 — — — 19,642 — — 19,642 Accrued liabilities 41,403 45,331 1,382 — 88,116 26,321 (8,223 ) 106,214 Deferred income tax liabilities 17,409 — — — 17,409 — — 17,409 Total current liabilities 658,792 1,162,760 1,384 (568,881 ) 1,254,055 44,202 (46,854 ) 1,251,403 Long-term debt 179,144 33,167 — (25,000 ) 187,311 867,579 — 1,054,890 Liability to HEP — 233,217 — — 233,217 — (233,217 ) — Deferred income tax liabilities 646,503 — — — 646,503 367 — 646,870 Other long-term liabilities 43,451 92,023 — — 135,474 47,170 (5,886 ) 176,758 Investment in HEP — — 133,995 — 133,995 — (133,995 ) — Equity – HollyFrontier 5,516,941 5,912,233 291,912 (6,204,145 ) 5,516,941 380,172 (373,529 ) 5,523,584 Equity – noncontrolling interest — — — — — 95,082 482,053 577,135 Total liabilities and equity $ 7,044,831 $ 7,433,400 $ 427,291 $ (6,798,026 ) $ 8,107,496 $ 1,434,572 $ (311,428 ) $ 9,230,640
Condensed Consolidating Statement of Income and Comprehensive Income	Condensed Consolidating Statement of Income and Comprehensive Income Three Months Ended June 30, 2015 Parent Guarantor Restricted Subsidiaries Non- Guarantor Restricted Subsidiaries Eliminations HollyFrontier Corp. Before Consolidation of HEP Non-Guarantor Non-Restricted Subsidiaries (HEP Segment) Consolidations and Eliminations Consolidated (In thousands) Sales and other revenues $ 168 $ 3,686,476 $ — $ — $ 3,686,644 $ 83,479 $ (68,211 ) $ 3,701,912 Operating costs and expenses: Cost of products sold — 2,954,989 — — 2,954,989 — (67,514 ) 2,887,475 Lower of cost or market inventory valuation adjustment — (135,480 ) — — (135,480 ) — — (135,480 ) Operating expenses — 220,790 — — 220,790 25,289 86 246,165 General and administrative 22,808 571 42 — 23,421 2,696 — 26,117 Depreciation and amortization 2,582 74,120 8 — 76,710 14,660 (3,567 ) 87,803 Total operating costs and expenses 25,390 3,114,990 50 — 3,140,430 42,645 (70,995 ) 3,112,080 Income (loss) from operations (25,222 ) 571,486 (50 ) — 546,214 40,834 2,784 589,832 Other income (expense): Earnings (loss) of equity method investments 593,825 20,334 20,175 (614,159 ) 20,175 631 (20,175 ) 631 Interest income (expense) (537 ) 1,918 199 — 1,580 (9,053 ) (2,318 ) (9,791 ) Loss on early extinguishment of debt (1,368 ) — — — (1,368 ) — — (1,368 ) Gain on sale of assets 714 87 — — 801 72 — 873 592,634 22,339 20,374 (614,159 ) 21,188 (8,350 ) (22,493 ) (9,655 ) Income before income taxes 567,412 593,825 20,324 (614,159 ) 567,402 32,484 (19,709 ) 580,177 Income tax provision 207,054 — — — 207,054 (64 ) — 206,990 Net income 360,358 593,825 20,324 (614,159 ) 360,348 32,548 (19,709 ) 373,187 Less net income attributable to noncontrolling interest — — (10 ) — (10 ) 1,743 10,630 12,363 Net income attributable to HollyFrontier stockholders $ 360,358 $ 593,825 $ 20,334 $ (614,159 ) $ 360,358 $ 30,805 $ (30,339 ) $ 360,824 Comprehensive income attributable to HollyFrontier stockholders $ 356,676 $ 588,016 $ 20,422 $ (608,438 ) $ 356,676 $ 30,893 $ (30,427 ) $ 357,142 Condensed Consolidating Statement of Income and Comprehensive Income Three Months Ended June 30, 2014 Parent Guarantor Restricted Subsidiaries Non- Guarantor Restricted Subsidiaries Eliminations HollyFrontier Corp. Before Consolidation of HEP Non-Guarantor Non-Restricted Subsidiaries (HEP Segment) Consolidations and Eliminations Consolidated (In thousands) Sales and other revenues $ 179 $ 5,362,277 $ (36 ) $ — $ 5,362,420 $ 75,024 $ (64,844 ) $ 5,372,600 Operating costs and expenses: Cost of products sold — 4,738,586 — — 4,738,586 — (63,740 ) 4,674,846 Operating expenses — 247,451 — — 247,451 24,567 (364 ) 271,654 General and administrative 24,343 1,469 37 — 25,849 2,516 — 28,365 Depreciation and amortization 2,010 87,473 — — 89,483 15,477 (3,570 ) 101,390 Total operating costs and expenses 26,353 5,074,979 37 — 5,101,369 42,560 (67,674 ) 5,076,255 Income (loss) from operations (26,174 ) 287,298 (73 ) — 261,051 32,464 2,830 296,345 Other income (expense): Earnings (loss) of equity method investments 303,788 14,546 16,132 (319,990 ) 14,476 748 (16,132 ) (908 ) Interest income (expense) (373 ) 1,944 143 — 1,714 (8,329 ) (2,337 ) (8,952 ) 303,415 16,490 16,275 (319,990 ) 16,190 (7,581 ) (18,469 ) (9,860 ) Income before income taxes 277,241 303,788 16,202 (319,990 ) 277,241 24,883 (15,639 ) 286,485 Income tax provision 101,304 — — — 101,304 28 — 101,332 Net income 175,937 303,788 16,202 (319,990 ) 175,937 24,855 (15,639 ) 185,153 Less net income attributable to noncontrolling interest — — — — — 1,416 7,308 8,724 Net income attributable to HollyFrontier stockholders $ 175,937 $ 303,788 $ 16,202 $ (319,990 ) $ 175,937 $ 23,439 $ (22,947 ) $ 176,429 Comprehensive income attributable to HollyFrontier stockholders $ 197,313 $ 338,556 $ 15,909 $ (354,465 ) $ 197,313 $ 23,145 $ (22,653 ) $ 197,805 Condensed Consolidating Statement of Income and Comprehensive Income Six Months Ended June 30, 2015 Parent Guarantor Restricted Subsidiaries Non- Guarantor Restricted Subsidiaries Eliminations HollyFrontier Corp. Before Consolidation of HEP Non-Guarantor Non-Restricted Subsidiaries (HEP Segment) Consolidations and Eliminations Consolidated (In thousands) Sales and other revenues $ 274 $ 6,675,868 $ — $ — $ 6,676,142 $ 173,235 $ (140,839 ) $ 6,708,538 Operating costs and expenses: Cost of products sold — 5,277,870 — — 5,277,870 — (139,022 ) 5,138,848 Lower of cost or market inventory valuation adjustment — (142,026 ) — — (142,026 ) — — (142,026 ) Operating expenses — 456,793 — — 456,793 53,255 (287 ) 509,761 General and administrative 48,632 986 82 — 49,700 5,986 — 55,686 Depreciation and amortization 4,908 141,044 16 — 145,968 28,950 (7,103 ) 167,815 Total operating costs and expenses 53,540 5,734,667 98 — 5,788,305 88,191 (146,412 ) 5,730,084 Income (loss) from operations (53,266 ) 941,201 (98 ) — 887,837 85,044 5,573 978,454 Other income (expense): Earnings (loss) of equity method investments 978,226 32,369 40,617 (1,019,136 ) 32,076 1,365 (40,617 ) (7,176 ) Interest income (expense) (839 ) 3,967 374 — 3,502 (17,820 ) (4,665 ) (18,983 ) Loss on early extinguishment of debt (1,368 ) — — — (1,368 ) — — (1,368 ) Gain on sale of assets 720 689 — — 1,409 230 — 1,639 976,739 37,025 40,991 (1,019,136 ) 35,619 (16,225 ) (45,282 ) (25,888 ) Income before income taxes 923,473 978,226 40,893 (1,019,136 ) 923,456 68,819 (39,709 ) 952,566 Income tax provision 336,681 — — — 336,681 37 — 336,718 Net income 586,792 978,226 40,893 (1,019,136 ) 586,775 68,782 (39,709 ) 615,848 Less net income attributable to noncontrolling interest — — (17 ) — (17 ) 5,770 22,395 28,148 Net income attributable to HollyFrontier stockholders $ 586,792 $ 978,226 $ 40,910 $ (1,019,136 ) $ 586,792 $ 63,012 $ (62,104 ) $ 587,700 Comprehensive income attributable to HollyFrontier stockholders $ 571,588 $ 953,098 $ 40,703 $ (993,801 ) $ 571,588 $ 62,805 $ (61,897 ) $ 572,496 Condensed Consolidating Statement of Income and Comprehensive Income Six Months Ended June 30, 2014 Parent Guarantor Restricted Subsidiaries Non- Guarantor Restricted Subsidiaries Eliminations HollyFrontier Corp. Before Consolidation of HEP Non-Guarantor Non-Restricted Subsidiaries (HEP Segment) Consolidations and Eliminations Consolidated (In thousands) Sales and other revenues $ 280 $ 10,137,400 $ 935 $ — $ 10,138,615 $ 162,036 $ (136,998 ) $ 10,163,653 Operating costs and expenses: Cost of products sold — 8,948,308 — — 8,948,308 — (134,842 ) 8,813,466 Operating expenses — 498,927 — — 498,927 47,379 (686 ) 545,620 General and administrative 45,450 4,095 76 — 49,621 5,667 — 55,288 Depreciation and amortization 3,800 154,580 — — 158,380 30,661 (7,103 ) 181,938 Total operating costs and expenses 49,250 9,605,910 76 — 9,655,236 83,707 (142,631 ) 9,596,312 Income (loss) from operations (48,970 ) 531,490 859 — 483,379 78,329 5,633 567,341 Other income (expense): Earnings (loss) of equity method investments 566,147 30,568 32,415 (599,694 ) 29,436 1,270 (32,415 ) (1,709 ) Interest income (expense) (797 ) 4,089 273 — 3,565 (18,780 ) (4,679 ) (19,894 ) Loss on early extinguishment of debt — — — — — (7,677 ) — (7,677 ) 565,350 34,657 32,688 (599,694 ) 33,001 (25,187 ) (37,094 ) (29,280 ) Income before income taxes 516,380 566,147 33,547 (599,694 ) 516,380 53,142 (31,461 ) 538,061 Income tax provision 188,843 — — — 188,843 103 — 188,946 Net income 327,537 566,147 33,547 (599,694 ) 327,537 53,039 (31,461 ) 349,115 Less net income attributable to noncontrolling interest — — — — — 5,053 15,572 20,625 Net income attributable to HollyFrontier stockholders $ 327,537 $ 566,147 $ 33,547 $ (599,694 ) $ 327,537 $ 47,986 $ (47,033 ) $ 328,490 Comprehensive income attributable to HollyFrontier stockholders $ 402,155 $ 687,940 $ 33,291 $ (721,231 ) $ 402,155 $ 47,730 $ (46,777 ) $ 403,108
Condensed Consolidating Statement of Cash Flows	Condensed Consolidating Statement of Cash Flows Six Months Ended June 30, 2015 Parent Guarantor Restricted Subsidiaries Non- Guarantor Restricted Subsidiaries Eliminations HollyFrontier Corp. Before Consolidation of HEP Non-Guarantor Non-Restricted Subsidiaries (HEP Segment) Consolidations and Eliminations Consolidated (In thousands) Cash flows from operating activities $ (348,026 ) $ 803,368 $ 47,880 $ — $ 503,222 $ 110,611 $ (43,893 ) $ 569,940 Cash flows from investing activities Additions to properties, plants and equipment (7,180 ) (259,857 ) (63 ) — (267,100 ) — — (267,100 ) Additions to properties, plants and equipment – HEP — — — — — (49,813 ) — (49,813 ) Purchases of marketable securities (246,008 ) — — — (246,008 ) — — (246,008 ) Sales and maturities of marketable securities 327,310 — — — 327,310 — — 327,310 Other, net — 1,846 — — 1,846 386 — 2,232 Net advances to Parent — (544,445 ) (47,877 ) 592,322 — — — — 74,122 (802,456 ) (47,940 ) 592,322 (183,952 ) (49,427 ) — (233,379 ) Cash flows from financing activities Net borrowings under credit agreement – HEP — — — — — 33,000 — 33,000 Redemption of senior notes - HFC (155,156 ) — — — (155,156 ) — — (155,156 ) Purchase of treasury stock (320,132 ) — — — (320,132 ) — — (320,132 ) Accelerated stock repurchase forward contract (60,000 ) — — — (60,000 ) — — (60,000 ) Dividends (125,192 ) — — — (125,192 ) — — (125,192 ) Distributions to noncontrolling interest — — — — — (85,489 ) 43,893 (41,596 ) Other, net (113 ) (912 ) 15 — (1,010 ) (1,101 ) — (2,111 ) Net advances from subsidiaries 592,322 — — (592,322 ) — — — — (68,271 ) (912 ) 15 (592,322 ) (661,490 ) (53,590 ) 43,893 (671,187 ) Cash and cash equivalents Increase (decrease) for the period (342,175 ) — (45 ) — (342,220 ) 7,594 — (334,626 ) Beginning of period 565,080 — 75 — 565,155 2,830 — 567,985 End of period $ 222,905 $ — $ 30 $ — $ 222,935 $ 10,424 $ — $ 233,359 Condensed Consolidating Statement of Cash Flows Six Months Ended June 30, 2014 Parent Guarantor Restricted Subsidiaries Non- Guarantor Restricted Subsidiaries Eliminations HollyFrontier Corp. Before Consolidation of HEP Non-Guarantor Non-Restricted Subsidiaries (HEP Segment) Consolidations and Eliminations Consolidated (In thousands) Cash flows from operating activities $ (144,972 ) $ 773,845 $ 38,968 $ — $ 667,841 $ 92,667 $ (39,029 ) $ 721,479 Cash flows from investing activities: Additions to properties, plants and equipment (6,329 ) (199,132 ) (526 ) — (205,987 ) — — (205,987 ) Additions to properties, plants and equipment – HEP — — — — — (38,782 ) — (38,782 ) Purchases of marketable securities (498,080 ) — — — (498,080 ) — — (498,080 ) Sales and maturities of marketable securities 543,604 — — — 543,604 — — 543,604 Other, net — 5,021 — — 5,021 — — 5,021 Net advances to Parent — (582,930 ) (38,604 ) 621,534 — — — — 39,195 (777,041 ) (39,130 ) 621,534 (155,442 ) (38,782 ) — (194,224 ) Cash flows from financing activities: Net borrowings under credit agreement – HEP — — — — — 180,000 — 180,000 Redemption of senior notes — — — — — (156,188 ) — (156,188 ) Inventory repurchase obligation 5,964 5,964 — — 5,964 Purchase of treasury stock (20,135 ) — — — (20,135 ) — — (20,135 ) Dividends (323,088 ) — — — (323,088 ) — — (323,088 ) Distributions to noncontrolling interest — — — — — (77,577 ) 39,029 (38,548 ) Excess tax benefit from equity-based compensation 3,778 — — — 3,778 — — 3,778 Other, net — (808 ) 375 — (433 ) (406 ) — (839 ) Net advances from subsidiaries 621,534 — — (621,534 ) — — — — 282,089 5,156 375 (621,534 ) (333,914 ) (54,171 ) 39,029 (349,056 ) Cash and cash equivalents Increase (decrease) for the period: 176,312 1,960 213 — 178,485 (286 ) — 178,199 Beginning of period 931,920 1,817 14 — 933,751 6,352 — 940,103 End of period $ 1,108,232 $ 3,777 $ 227 $ — $ 1,112,236 $ 6,066 $ — $ 1,118,302

Description of Business and P36

Description of Business and Presentation of Financial Statements (Details)	3 Months Ended	6 Months Ended
	Jun. 30, 2015USD ($)	Jun. 30, 2015USD ($)Petroleum_Refineriesmi	Dec. 31, 2014USD ($)
Ownership Interest By Project Type [Line Items]
Number of refineries located in Tulsa, Oklahoma | Petroleum_Refineries		2
Refinery Distance From Main City [Miles] | mi		65
Allowance for doubtful accounts reserve	$ 2,300,000	$ 2,300,000	$ 2,400,000
Goodwill, Impairment Loss	$ 0
Twelve Inch Refined Products Pipeline Project
Ownership Interest By Project Type [Line Items]
Description of pipeline acquired (inches)		12
HEP [Member]
Ownership Interest By Project Type [Line Items]
Percentage of ownership in variable interest entity		39.00%
Percentage of general partner interest		2.00%
HEP [Member] | SLC Pipeline [Member]
Ownership Interest By Project Type [Line Items]
Length of pipeline (miles) | mi		95
SLC Pipeline [Member] | HEP [Member]
Ownership Interest By Project Type [Line Items]
Equity Method Investment, Ownership Percentage	25.00%	25.00%
UNEV Pipeline [Member]
Ownership Interest By Project Type [Line Items]
Equity Method Investment, Ownership Percentage	75.00%	75.00%

Variable Interest Entity (Detai

Variable Interest Entity (Details) - 6 months ended Jun. 30, 2015 - HEP [Member] $ in Millions	USD ($)Customers
Variable Interest Entity [Line Items]
Percentage of ownership in variable interest entity	39.00%
Limited Liability Company (LLC) or Limited Partnership (LP), Managing Member or General Partner, Ownership Interest	2.00%
Number of primary customers | Customers	2
Percentage of revenue Holly Corp represents	81.00%
Annual contract payment	$ 236.6

Financial Instruments (Estimate

Financial Instruments (Estimated Fair Values Of Debt Instruments) (Details) - USD ($) $ in Thousands	Jun. 30, 2015	Dec. 31, 2014
Debt Instrument [Line Items]
Financial instruments, assets at carrying value	$ 524,402	$ 701,044
Financial Liabilities Fair Value Disclosure	425,944	644,212
Level 1 [Member]
Debt Instrument [Line Items]
Financial instruments, assets at carrying value	0	17,619
Financial Liabilities Fair Value Disclosure	236
Level 2 [Member]
Debt Instrument [Line Items]
Financial instruments, assets at carrying value	524,402	683,425
Financial Liabilities Fair Value Disclosure	425,708	644,212
Investments [Member]
Debt Instrument [Line Items]
Financial instruments, assets at carrying value	392,859	474,110
Investments [Member] | Level 1 [Member]
Debt Instrument [Line Items]
Financial instruments, assets at carrying value	0	0
Investments [Member] | Level 2 [Member]
Debt Instrument [Line Items]
Financial instruments, assets at carrying value	392,859	474,110
Forward Contracts [Member]
Debt Instrument [Line Items]
Financial instruments, assets at carrying value	76
Financial Liabilities Fair Value Disclosure	2,143
Forward Contracts [Member] | Level 2 [Member]
Debt Instrument [Line Items]
Financial instruments, assets at carrying value	76
Financial Liabilities Fair Value Disclosure	2,143
Senior Notes [Member]
Debt Instrument [Line Items]
Financial Liabilities Fair Value Disclosure		155,250
Senior Notes [Member] | HEP [Member]
Debt Instrument [Line Items]
Financial Liabilities Fair Value Disclosure	295,875	291,000
Senior Notes [Member] | Level 2 [Member]
Debt Instrument [Line Items]
Financial Liabilities Fair Value Disclosure		155,250
Senior Notes [Member] | Level 2 [Member] | HEP [Member]
Debt Instrument [Line Items]
Financial Liabilities Fair Value Disclosure	295,875	291,000
Nymex Futures Contracts [Member]
Debt Instrument [Line Items]
Financial instruments, assets at carrying value		17,619
Nymex Futures Contracts [Member] | Level 1 [Member]
Debt Instrument [Line Items]
Financial instruments, assets at carrying value		17,619
Nymex Futures Contracts [Member] | Level 2 [Member]
Debt Instrument [Line Items]
Financial instruments, assets at carrying value		0
Interest Rate Swap [Member] | HEP [Member]
Debt Instrument [Line Items]
Financial instruments, assets at carrying value	134	1,019
Financial Liabilities Fair Value Disclosure	707	1,065
Interest Rate Swap [Member] | Level 2 [Member] | HEP [Member]
Debt Instrument [Line Items]
Financial instruments, assets at carrying value	134	1,019
Financial Liabilities Fair Value Disclosure	707	1,065
Commodity Contract [Member]
Debt Instrument [Line Items]
Financial instruments, assets at carrying value	131,333	208,296
Financial Liabilities Fair Value Disclosure	126,983	196,897
Commodity Contract [Member] | Level 2 [Member]
Debt Instrument [Line Items]
Financial instruments, assets at carrying value	131,333	208,296
Financial Liabilities Fair Value Disclosure	126,983	196,897
Reported Value Measurement [Member]
Debt Instrument [Line Items]
Financial instruments, assets at carrying value	524,402	701,044
Financial Liabilities Fair Value Disclosure	426,974	648,685
Reported Value Measurement [Member] | Investments [Member]
Debt Instrument [Line Items]
Financial instruments, assets at carrying value	392,859	474,110
Reported Value Measurement [Member] | Forward Contracts [Member]
Debt Instrument [Line Items]
Financial instruments, assets at carrying value	76
Financial Liabilities Fair Value Disclosure	2,143
Reported Value Measurement [Member] | Senior Notes [Member]
Debt Instrument [Line Items]
Financial Liabilities Fair Value Disclosure		154,144
Reported Value Measurement [Member] | Senior Notes [Member] | HEP [Member]
Debt Instrument [Line Items]
Financial Liabilities Fair Value Disclosure	296,905	296,579
Reported Value Measurement [Member] | Nymex Futures Contracts [Member]
Debt Instrument [Line Items]
Financial instruments, assets at carrying value		17,619
Reported Value Measurement [Member] | Interest Rate Swap [Member] | HEP [Member]
Debt Instrument [Line Items]
Financial instruments, assets at carrying value	134	1,019
Financial Liabilities Fair Value Disclosure	707	1,065
Reported Value Measurement [Member] | Commodity Contract [Member]
Debt Instrument [Line Items]
Financial instruments, assets at carrying value	131,333	208,296
Financial Liabilities Fair Value Disclosure	126,983	$ 196,897
Nymex Futures Contracts [Member]
Debt Instrument [Line Items]
Financial Liabilities Fair Value Disclosure	236
Nymex Futures Contracts [Member] | Level 1 [Member]
Debt Instrument [Line Items]
Financial Liabilities Fair Value Disclosure	236
Nymex Futures Contracts [Member] | Level 2 [Member]
Debt Instrument [Line Items]
Financial Liabilities Fair Value Disclosure	0
Nymex Futures Contracts [Member] | Reported Value Measurement [Member]
Debt Instrument [Line Items]
Financial Liabilities Fair Value Disclosure	$ 236

Financial Instruments (Changes

Financial Instruments (Changes in Level 3 Inputs) (Details) - Fair Value, Inputs, Level 3 [Member] - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Liability Balance at Beginning of Period	$ (2,552)	$ (22,473)	$ 0	$ (35,318)
Liability Balance at End of Period	0	(75,637)	0	(75,637)
Cost of Sales [Member]
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Change in fair value recognized in other comprehensive income	0	(4,463)	0	(3,782)
Sales [Member]
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Change in fair value recognized in other comprehensive income	(3,852)	48,942	(3,852)	74,273
Changes Measurement [Member]
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Change in fair value recognized in other comprehensive income	6,404	(90,559)	3,852	(112,695)
Changes Measurement [Member] | Cost of Sales [Member]
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Change in fair value recognized in other comprehensive income	$ 0	$ (7,084)	$ 0	$ 1,885

Earnings Per Share (Schedule Of

Earnings Per Share (Schedule Of Earnings Per Share) (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands		3 Months Ended		6 Months Ended
		Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014
Earnings Per Share, Basic, by Common Class, Including Two Class Method [Line Items]
Net income attributable to HollyFrontier stockholders		$ 360,824	$ 176,429	$ 587,700	$ 328,490
Participating Securities Share in Earnings		1,036	475	1,677	945
Net income attributable to common shares		$ 359,788	$ 175,954	$ 586,023	$ 327,545
Average number of shares of common stock outstanding		191,355	198,139	193,202	198,217
Effect of dilutive variable restricted shares and performance share units	[1]	99	241	77	191
Average number of shares of common stock outstanding assuming dilution		191,454	198,380	193,279	198,408
Basic earnings per share		$ 1.88	$ 0.89	$ 3.03	$ 1.65
Diluted earnings per share		$ 1.88	$ 0.89	$ 3.03	$ 1.65
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount		349	26	379	2
[1]	(1) Excludes anti-dilutive restricted and performance share units of: 349,000 26,000 379,000 2,000

Stock-Based Compensation (Narra

Stock-Based Compensation (Narrative) (Details) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2015USD ($)	Jun. 30, 2014USD ($)	Jun. 30, 2015USD ($)Petroleum_Refineriesshares	Jun. 30, 2014USD ($)
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of Share-based Compensation Plans | Petroleum_Refineries			2
Share-based Compensation Expense	$ 6.1	$ 6.8	$ 12.5	$ 12.2
HEP [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based Compensation Expense	$ 0.9	$ 0.8	$ 1.8	$ 1.7
Restricted Stock [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period | shares			2,999
Total unrecognized compensation cost, weighted-average period of recognition, years			1 year 4 months 2 days
Restricted Stock [Member] | Minimum [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based Compensation Arrangement Vesting Period			1 year
Restricted Stock [Member] | Maximum [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based Compensation Arrangement Vesting Period			3 years
Performance Shares [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Total unrecognized compensation cost, weighted-average period of recognition, years			1 year 6 months
Performance Shares [Member] | Maximum [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based Compensation Arrangement Vesting Period			3 years

Stock-Based Compensation (Summa

Stock-Based Compensation (Summary Of Restricted Stock Activity) (Details) - Jun. 30, 2015 - Restricted Stock [Member] - USD ($) $ / shares in Units, $ in Thousands	Total
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Employee Service Share-based Compensation, Nonvested Awards, Total Compensation Cost Not yet Recognized, Period for Recognition	1 year 4 months 2 days
Total unrecognized compensation cost related to non-vested grants	$ 13,400
Fair value of restricted stock vested	$ 100
Outstanding at January 1, 2015 (non-vested)	669,777
Granted	9,894
Vesting (transfer/conversion to common stock)	(2,999)
Forfeited	(13,106)
Outstanding at June 30, 2015 (non-vested)	663,566
Outstanding at January 1, 2015 (non-vested), Weighted Average Grant Date Fair Value	$ 44.12
Granted, Weighted Average Grant Date Fair Value	37.68
Vesting and transfer of ownership to recipients, Weighted Average Grant Date Fair Value	44.48
Forfeited, Weighted Average Grant Date Fair Value, per share	43.81
Outstanding at June 30, 2015 (non-vested), Weighted Average Grant Date Fair Value	$ 44.03
Aggregate Intrinsic Value	$ 28,268

Stock-Based Compensation (Sum43

Stock-Based Compensation (Summary Of Performance Share Unit Activity) (Details) - Jun. 30, 2015 - Performance Shares [Member] - USD ($) $ / shares in Units, $ in Millions	Total
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Employee Service Share-based Compensation, Nonvested Awards, Compensation Cost Not yet Recognized	$ 14.9
Employee Service Share-based Compensation, Nonvested Awards, Total Compensation Cost Not yet Recognized, Period for Recognition	1 year 6 months
Outstanding at January 1, 2015 (non-vested)	725,054
Granted	4,242
Forfeited	(25,973)
Outstanding at June 30, 2015 (non-vested)	703,323
Current Estimated Percentage Of Share Units Awarded Ultimately Issued	35.00%
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period, Weighted Average Grant Date Fair Value	$ 43.67
Maximum [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based Compensation Expense	3 years
Percentage Of Share Units Awarded Ultimately Issued	200.00%
Minimum [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Percentage Of Share Units Awarded Ultimately Issued	0.00%

Cash and Cash Equivalents and44

Cash and Cash Equivalents and Investments in Marketable Securities (Narrative) (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014
Schedule of Available-for-sale Securities [Line Items]
Investment Income, Interest	$ 768	$ 1,184	$ 1,730	$ 2,589
Maximum term to maturity from date of purchase (years)	1 year
Available-for-sale Securities [Member]
Schedule of Available-for-sale Securities [Line Items]
Investment Income, Interest	$ 500	$ 600	$ 900	$ 1,200

Cash and Cash Equivalents and45

Cash and Cash Equivalents and Investments in Marketable Securities (Available-For-Sale Securities) (Details) - USD ($) $ in Thousands	Jun. 30, 2015	Dec. 31, 2014
Certificates of Deposit [Member]
Schedule of Trading Securities and Other Trading Assets [Line Items]
Available-for-Sale Securities, Amortized Cost	$ 20,998	$ 54,000
Available-for-sale Debt Securities, Accumulated Gross Unrealized Gain, before Tax	11	10
Available-for-sale Debt Securities, Accumulated Gross Unrealized Loss, before Tax	0	0
Available-for-sale Securities, Fair Value (Net Carrying Amount)	21,009	54,010
Commercial Paper [Member]
Schedule of Trading Securities and Other Trading Assets [Line Items]
Available-for-Sale Securities, Amortized Cost	29,957	52,297
Available-for-sale Debt Securities, Accumulated Gross Unrealized Gain, before Tax	17	7
Available-for-sale Debt Securities, Accumulated Gross Unrealized Loss, before Tax	0	(4)
Available-for-sale Securities, Fair Value (Net Carrying Amount)	29,974	52,300
Corporate Debt Securities [Member]
Schedule of Trading Securities and Other Trading Assets [Line Items]
Available-for-Sale Securities, Amortized Cost	68,339	136,181
Available-for-sale Debt Securities, Accumulated Gross Unrealized Gain, before Tax	2	1
Available-for-sale Debt Securities, Accumulated Gross Unrealized Loss, before Tax	(43)	(94)
Available-for-sale Securities, Fair Value (Net Carrying Amount)	68,298	136,088
US States and Political Subdivisions Debt Securities [Member]
Schedule of Trading Securities and Other Trading Assets [Line Items]
Available-for-Sale Securities, Amortized Cost	273,700	231,819
Available-for-sale Debt Securities, Accumulated Gross Unrealized Gain, before Tax	11	5
Available-for-sale Debt Securities, Accumulated Gross Unrealized Loss, before Tax	(133)	(112)
Available-for-sale Securities, Fair Value (Net Carrying Amount)	273,578	231,712
Total Marketable Securities [Member]
Schedule of Trading Securities and Other Trading Assets [Line Items]
Available-for-Sale Securities, Amortized Cost	392,994	474,297
Available-for-sale Debt Securities, Accumulated Gross Unrealized Gain, before Tax	41	23
Available-for-sale Debt Securities, Accumulated Gross Unrealized Loss, before Tax	(176)	(210)
Available-for-sale Securities, Fair Value (Net Carrying Amount)	$ 392,859	$ 474,110

Inventories (Details)

Inventories (Details) - USD ($) $ in Thousands		3 Months Ended		6 Months Ended
		Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014	Dec. 31, 2014
Inventories
Crude Oil		$ 508,984		$ 508,984		$ 581,592
Other raw materials and unfinished products	[1]	191,102		191,102		204,467
Finished products	[2]	617,996		617,996		531,523
Lower of cost or market reserve		(255,452)		(255,452)		(397,478)
Process chemicals	[3]	4,903		4,903		4,028
Repairs and maintenance supplies and other		122,385		122,385		110,999
Inventories, total		1,189,918		1,189,918		$ 1,035,131
Lower of cost or market inventory valuation adjustment		$ (135,480)	$ 0	$ (142,026)	$ 0
[1]	Other raw materials and unfinished products include feedstocks and blendstocks, other than crude.
[2]	Finished products include gasolines, jet fuels, diesels, lubricants, asphalts, LPG’s and residual fuels.
[3]	Process chemicals include additives and other chemicals.

Environmental (Details)

Environmental (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014	Dec. 31, 2014
Loss Contingencies [Line Items]
Environmental remediation costs	$ 0.1	$ 1	$ 4.6	$ 1.3
Accrued environmental liability	102.8		$ 102.8		$ 104.5
Estimated time frame to remediate contigency			30
Other Noncurrent Liabilities [Member]
Loss Contingencies [Line Items]
Accrued environmental liability	$ 83.8		$ 83.8		$ 81.8

Debt (Narrative) (Details)

Debt (Narrative) (Details) - USD ($) $ in Thousands	3 Months Ended			6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Mar. 31, 2014	Jun. 30, 2015	Jun. 30, 2014	Apr. 28, 2015	Mar. 31, 2015	Dec. 31, 2014
Debt Instrument [Line Items]
Capitalized Interest Costs, Including Allowance for Funds Used During Construction	$ 2,500	$ 3,100		$ 5,400	$ 6,000
Maximum borrowing capacity under revolving credit agreement	1,000,000			1,000,000
Letters of Credit Outstanding, Amount	4,600			4,600
Gains (Losses) on Extinguishment of Debt	$ (1,368)	$ 0		$ (1,368)	(7,677)
6.875% Senior Notes Due 2018 [Member]
Debt Instrument [Line Items]
Stated interest rate, senior notes	6.875%			6.875%
Extinguishment of Debt, Amount	$ 155,200
Gains (Losses) on Extinguishment of Debt	(1,400)
Redemption Premium	5,200
Amortization of Financing Costs and Discounts	(3,800)
Senior notes	150,000			$ 150,000				$ 150,000
Plains [Member] | Lease [Member]
Debt Instrument [Line Items]
Proceeds from sale of storage assets				$ 40,000
Term of lease, years				15 years
HEP [Member]
Debt Instrument [Line Items]
Maximum borrowing capacity under revolving credit agreement	850,000			$ 850,000		$ 850,000	$ 650,000
Borrowings outstanding under revolving credit agreement	$ 604,000			$ 604,000
HEP [Member] | 8.25% Senior Notes Due 2018 [Member]
Debt Instrument [Line Items]
Stated interest rate, senior notes			8.25%
Extinguishment of Debt, Amount			$ 156,200
Gains (Losses) on Extinguishment of Debt					$ (7,677)
Redemption Premium			6,200
Amortization of Financing Costs and Discounts			1,500
Debt Instrument, Face Amount			$ 150,000
HEP [Member] | 6.5% Senior Notes Due 2020 [Member]
Debt Instrument [Line Items]
Stated interest rate, senior notes	6.50%			6.50%
Senior notes	$ 300,000			$ 300,000				300,000
HEP [Member] | Letter of Credit [Member]
Debt Instrument [Line Items]
Maximum borrowing capacity under revolving credit agreement	50,000			50,000
HEP [Member] | Holly Energy Partners Credit Agreement [Member]
Debt Instrument [Line Items]
Borrowings outstanding under revolving credit agreement	$ 604,000			$ 604,000				$ 571,000

Debt (Carrying Amounts Of Long-

Debt (Carrying Amounts Of Long-Term Debt) (Details) - Entity [Domain] - USD ($) $ in Thousands	Jun. 30, 2015	Dec. 31, 2014
Debt Instrument [Line Items]
Financing obligation	$ 32,257	$ 33,167
Total long-term debt	933,162	1,054,890
Long-term Debt and Capital Lease Obligations	933,162	1,054,890
6.875% Senior Notes Due 2018 [Member]
Debt Instrument [Line Items]
Principal	150,000	150,000
Unamortized Premium		4,144
Total long-term debt		154,144
Holly Financing Obligation [Member]
Debt Instrument [Line Items]
Long-term Debt and Capital Lease Obligations	32,257	187,311
HEP [Member]
Debt Instrument [Line Items]
HEP Credit Agreement	604,000
Total long-term debt	900,905	867,579
Long-term Debt and Capital Lease Obligations	900,905	867,579
HEP [Member] | Holly Energy Partners Credit Agreement [Member]
Debt Instrument [Line Items]
HEP Credit Agreement	604,000	571,000
HEP [Member] | 6.5% Senior Notes Due 2020 [Member]
Debt Instrument [Line Items]
Principal	300,000	300,000
Unamortized discount	(3,095)	(3,421)
Total long-term debt	$ 296,905	$ 296,579

Derivative Instruments And He50

Derivative Instruments And Hedging Activities (Narrative) (Details) - Jun. 30, 2015 - USD ($) $ in Millions	Total	Total
Derivative [Line Items]
Net unrealized gain in accumulated other comprehensive income related to accounting hedges	$ 13.3	$ 13.3
Net unrealized gain to be transferred from accumulated other comprehensive income to statement of income		(9.3)
HEP [Member] | Interest Rate Contract [Member]
Derivative [Line Items]
Credit agreement advance	305	305
Credit agreement advance maturing in 2016	$ 155	$ 155
Fixed interest rate	0.74%	0.74%
Rate added to fixed base rate	2.00%	2.00%
Effective interest rate on debt	2.74%	2.74%
Credit agreement advance maturing in 2017	$ 150	$ 150
HEP [Member] | Current Interest Rate Swap [Member]
Derivative [Line Items]
Fixed interest rate	0.99%	0.99%
Effective interest rate on debt	2.99%	2.99%

Derivative Instruments And He51

Derivative Instruments And Hedging Activities Interest Rate Swaps (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014
Derivative [Line Items]
Derivative Instruments, Gain (Loss) Recognized in Other Comprehensive Income (Loss), Effective Portion, Net	$ 8,501	$ 47,988	$ (5,647)	$ 140,466
Derivative Instruments, Gain (Loss) Reclassified from Accumulated OCI into Income, Effective Portion, Net	(14,802)	(13,197)	(19,494)	(18,957)
Derivative Instruments, Gain (Loss) Recognized in Income	14,532	12,927	18,954	18,417
HEP [Member]
Derivative [Line Items]
Derivative Instruments, Gain (Loss) Recognized in Other Comprehensive Income (Loss), Effective Portion, Net	(306)	(1,299)	(1,586)	(1,742)
Derivative Instruments, Gain (Loss) Reclassified from Accumulated OCI into Income, Effective Portion, Net	528	553	1,059	1,091
Derivative Instruments, Gain (Loss) Recognized in Income	222	(746)	(527)	(651)
Interest Expense [Member] | HEP [Member]
Derivative [Line Items]
Derivative Instruments, Gain (Loss) Recognized in Income	$ (528)	$ (553)	$ (1,059)	$ (1,091)

Derivative Instruments And He52

Derivative Instruments And Hedging Activities Derivatives and Hedging Instruments Gains Losses due to Settlements Hedge Ineffectiveness (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014
Trading Activity, Gains and Losses, Net [Line Items]
Derivative Instruments, change in fair value	$ 8,501	$ 47,988	$ (5,647)	$ 140,466
Derivative Instruments, Gain (Loss) Reclassified from Accumulated OCI into Income, Effective Portion, Net	(14,802)	(13,197)	(19,494)	(18,957)
Loss on Discontinuation of Cash Flow Hedge Due to Forecasted Transaction Probable of Not Occurring	270	270	540	540
Unrealized Gain (Loss) on Cash Flow Hedging Instruments	(6,031)	35,061	(24,601)	122,049
Derivative, Net Hedge Ineffectiveness Gain (Loss)	2,354	1,354	4,011	(806)
Derivative Instruments, Gain (Loss) Recognized in Income	14,532	12,927	18,954	18,417
Sales [Member]
Trading Activity, Gains and Losses, Net [Line Items]
Derivative, Net Hedge Ineffectiveness Gain (Loss)	(140)		(274)
Derivative Instruments, Gain (Loss) Recognized in Income	49,752	(48,942)	98,932	(74,273)
Cost of Sales [Member]
Trading Activity, Gains and Losses, Net [Line Items]
Derivative, Net Hedge Ineffectiveness Gain (Loss)	2,494		3,738
Derivative Instruments, Gain (Loss) Recognized in Income	(30,964)	61,124	(71,733)	90,441
Operating Expense [Member]
Trading Activity, Gains and Losses, Net [Line Items]
Derivative, Net Hedge Ineffectiveness Gain (Loss)		1,354	547	(806)
Derivative Instruments, Gain (Loss) Recognized in Income	$ (4,256)	$ 745	$ (8,245)	$ 2,249

Derivative Instruments And He53

Derivative Instruments And Hedging Activities Volumes related to price risk purchase derivatives (Details) - 6 months ended Jun. 30, 2015	MMBTUbbl
Natural Gas - long [Member]
Price Risk Derivatives for Future Purchases Notional Contract Volumes [Line Items]
Derivative, Nonmonetary Notional Amount, Energy Measure | MMBTU	24,000,000
WTI Crude Oil [Member]
Price Risk Derivatives for Future Purchases Notional Contract Volumes [Line Items]
Price Risk Fair Value Hedge Derivative, at Fair Value, Net	2,208,000
Ultra Low Sulfur Diesel [Member]
Price Risk Derivatives for Future Purchases Notional Contract Volumes [Line Items]
Price Risk Fair Value Hedge Derivative, at Fair Value, Net	2,208,000
Forward Contracts [Member]
Price Risk Derivatives for Future Purchases Notional Contract Volumes [Line Items]
Price Risk Fair Value Hedge Derivative, at Fair Value, Net	1,500,000
Future [Member]
Price Risk Derivatives for Future Purchases Notional Contract Volumes [Line Items]
Price Risk Fair Value Hedge Derivative, at Fair Value, Net	1,125,000
Maturing in Next Twelve Months [Member] | Natural Gas - long [Member]
Price Risk Derivatives for Future Purchases Notional Contract Volumes [Line Items]
Derivative, Nonmonetary Notional Amount, Energy Measure | MMBTU	4,800,000
Maturing in Next Twelve Months [Member] | WTI Crude Oil [Member]
Price Risk Derivatives for Future Purchases Notional Contract Volumes [Line Items]
Price Risk Fair Value Hedge Derivative, at Fair Value, Net	2,208,000
Maturing in Next Twelve Months [Member] | Ultra Low Sulfur Diesel [Member]
Price Risk Derivatives for Future Purchases Notional Contract Volumes [Line Items]
Price Risk Fair Value Hedge Derivative, at Fair Value, Net	2,208,000
Maturing in Next Twelve Months [Member] | Forward Contracts [Member]
Price Risk Derivatives for Future Purchases Notional Contract Volumes [Line Items]
Price Risk Fair Value Hedge Derivative, at Fair Value, Net	1,500,000
Maturing in Next Twelve Months [Member] | Future [Member]
Price Risk Derivatives for Future Purchases Notional Contract Volumes [Line Items]
Price Risk Fair Value Hedge Derivative, at Fair Value, Net	1,125,000
Maturing in Year Two [Member] | Natural Gas - long [Member]
Price Risk Derivatives for Future Purchases Notional Contract Volumes [Line Items]
Derivative, Nonmonetary Notional Amount, Energy Measure | MMBTU	9,600,000
Maturing in Year Three [Member] | Natural Gas - long [Member]
Price Risk Derivatives for Future Purchases Notional Contract Volumes [Line Items]
Derivative, Nonmonetary Notional Amount, Energy Measure | MMBTU	9,600,000

Derivative Instruments And He54

Derivative Instruments And Hedging Activities Notional Contracts by Derivative Type (Details) - Jun. 30, 2015 $ in Millions	USD ($)MMBTUbbl
economic hedges by derivative type [Line Items]
Available-for-sale Securities, Change in Net Unrealized Holding Gain (Loss) before Taxes | $	$ 13.3
Accumulated Other Comprehensive Income (Loss), Unrealized Gain (Loss) From Hedging Activites | $	$ 2.7
Commodity Contract [Member]
economic hedges by derivative type [Line Items]
Price Risk Fair Value Hedge Derivative, at Fair Value, Net | bbl	4,412,000
Natural Gas Liquids [Member]
economic hedges by derivative type [Line Items]
Derivative, Nonmonetary Notional Amount, Energy Measure	17,820,000
Natural Gas - long [Member]
economic hedges by derivative type [Line Items]
Derivative, Nonmonetary Notional Amount, Energy Measure	24,000,000
Natural Gas - Short [Member]
economic hedges by derivative type [Line Items]
Derivative, Nonmonetary Notional Amount, Energy Measure	24,000,000
Commodity WTI short [Member]
economic hedges by derivative type [Line Items]
Price Risk Fair Value Hedge Derivative, at Fair Value, Net | bbl	1,095,000
Maturing in Next Twelve Months [Member] | Commodity Contract [Member]
economic hedges by derivative type [Line Items]
Price Risk Fair Value Hedge Derivative, at Fair Value, Net | bbl	3,680,000
Maturing in Next Twelve Months [Member] | Natural Gas Liquids [Member]
economic hedges by derivative type [Line Items]
Derivative, Nonmonetary Notional Amount, Energy Measure	4,020,000
Maturing in Next Twelve Months [Member] | Natural Gas - long [Member]
economic hedges by derivative type [Line Items]
Derivative, Nonmonetary Notional Amount, Energy Measure	4,800,000
Maturing in Next Twelve Months [Member] | Natural Gas - Short [Member]
economic hedges by derivative type [Line Items]
Derivative, Nonmonetary Notional Amount, Energy Measure	4,800,000
Maturing in Next Twelve Months [Member] | Commodity WTI short [Member]
economic hedges by derivative type [Line Items]
Price Risk Fair Value Hedge Derivative, at Fair Value, Net | bbl	1,095,000
Maturing in Year Three [Member] | Natural Gas Liquids [Member]
economic hedges by derivative type [Line Items]
Derivative, Nonmonetary Notional Amount, Energy Measure	6,900,000
Maturing in Year Three [Member] | Natural Gas - long [Member]
economic hedges by derivative type [Line Items]
Derivative, Nonmonetary Notional Amount, Energy Measure	9,600,000
Maturing in Year Three [Member] | Natural Gas - Short [Member]
economic hedges by derivative type [Line Items]
Derivative, Nonmonetary Notional Amount, Energy Measure	9,600,000
Maturing in Year Two [Member] | Commodity Contract [Member]
economic hedges by derivative type [Line Items]
Price Risk Fair Value Hedge Derivative, at Fair Value, Net | bbl	732,000
Maturing in Year Two [Member] | Natural Gas Liquids [Member]
economic hedges by derivative type [Line Items]
Derivative, Nonmonetary Notional Amount, Energy Measure	6,900,000
Maturing in Year Two [Member] | Natural Gas - long [Member]
economic hedges by derivative type [Line Items]
Derivative, Nonmonetary Notional Amount, Energy Measure	9,600,000
Maturing in Year Two [Member] | Natural Gas - Short [Member]
economic hedges by derivative type [Line Items]
Derivative, Nonmonetary Notional Amount, Energy Measure	9,600,000

Derivative Instruments And He55

Derivative Instruments And Hedging Activities (Summary Of Balance Sheet Locations And Related Fair Values Of Outstanding Derivative Instruments) (Details) - USD ($) $ in Thousands	Jun. 30, 2015	Dec. 31, 2014
Derivative [Line Items]
Derivative Instruments in Hedges, Assets, at Fair Value	$ 29,969	$ 54,869
Derivative, Net Liability Position, Aggregate Fair Value	28,495	25,897
Accrued Liabilities [Member]
Derivative [Line Items]
Derivative, Net Liability Position, Aggregate Fair Value	4,727
Other Intangible Assets [Member]
Derivative [Line Items]
Derivative Instruments in Hedges, Assets, at Fair Value	674	1,019
Prepayments And Other [Member]
Derivative [Line Items]
Derivative Instruments in Hedges, Assets, at Fair Value	29,295	53,850
Other Noncurrent Liabilities [Member]
Derivative [Line Items]
Derivative, Net Liability Position, Aggregate Fair Value	23,768	25,897
Forward Contracts [Member]
Derivative [Line Items]
Derivative Asset, Fair Value, Gross Asset	223
Derivative designated as cash flow hedging instrument asset - gross liability	(166)
Derivative designated as cash flow hedging instrument asset - net asset	57
Not Designated as Hedging Instrument [Member]
Derivative [Line Items]
Derivative Asset, Fair Value, Gross Asset	24,580	35,249
Derivative designated as cash flow hedging instrument asset - gross liability	(7,461)	(12,942)
Derivative Instruments in Hedges, Assets, at Fair Value	17,119	22,307
Derivative Designated as Cash Flow Hedging Instrument Liability - Gross Liability	27,518	20,398
Derivative Designated as Cash Flow Hedging Instrument Liability - Gross Asset	(23,475)	(17,007)
Derivative, Net Liability Position, Aggregate Fair Value	4,043	3,391
Not Designated as Hedging Instrument [Member] | Commodity Contract [Member]
Derivative [Line Items]
Derivative Asset, Fair Value, Gross Asset	24,580	17,630
Derivative designated as cash flow hedging instrument asset - gross liability	(7,461)	(12,942)
Derivative Instruments in Hedges, Assets, at Fair Value	17,119	4,688
Derivative Designated as Cash Flow Hedging Instrument Liability - Gross Liability	27,282	20,398
Derivative Designated as Cash Flow Hedging Instrument Liability - Gross Asset	(23,475)	(17,007)
Derivative, Net Liability Position, Aggregate Fair Value	3,807	3,391
Not Designated as Hedging Instrument [Member] | Nymex Futures Contracts [Member]
Derivative [Line Items]
Derivative Asset, Fair Value, Gross Asset	0	17,619
Derivative Instruments in Hedges, Assets, at Fair Value	0	17,619
Derivative Designated as Cash Flow Hedging Instrument Liability - Gross Liability	236
Derivative, Net Liability Position, Aggregate Fair Value	236	0
Designated as Hedging Instrument [Member]
Derivative [Line Items]
Derivative Asset, Fair Value, Gross Asset	62,727	174,677
Derivative designated as cash flow hedging instrument asset - gross liability	(49,877)	(142,115)
Derivative Instruments in Hedges, Assets, at Fair Value	12,850	32,562
Derivative Designated as Cash Flow Hedging Instrument Liability - Gross Liability	45,917	22,506
Derivative Designated as Cash Flow Hedging Instrument Liability - Gross Asset	(21,465)	0
Derivative, Net Liability Position, Aggregate Fair Value	24,452	22,506
Designated as Hedging Instrument [Member] | Forward Contracts [Member]
Derivative [Line Items]
Derivative Designated as Cash Flow Hedging Instrument Liability - Gross Liability	2,563
Derivative Designated as Cash Flow Hedging Instrument Liability - Gross Asset	(439)
Derivative, Net Liability Position, Aggregate Fair Value	2,124
Designated as Hedging Instrument [Member] | Commodity Contract [Member]
Derivative [Line Items]
Derivative Asset, Fair Value, Gross Asset	62,370	173,658
Derivative designated as cash flow hedging instrument asset - gross liability	(49,711)	(142,115)
Derivative Instruments in Hedges, Assets, at Fair Value	12,659	31,543
Derivative Designated as Cash Flow Hedging Instrument Liability - Gross Liability	42,647	21,441
Derivative Designated as Cash Flow Hedging Instrument Liability - Gross Asset	(21,026)	0
Derivative, Net Liability Position, Aggregate Fair Value	21,621	21,441
Designated as Hedging Instrument [Member] | HEP Interest Rate Swap [Member]
Derivative [Line Items]
Derivative Asset, Fair Value, Gross Asset	134	1,019
Derivative designated as cash flow hedging instrument asset - gross liability	0	0
Derivative Instruments in Hedges, Assets, at Fair Value	134	1,019
Derivative Designated as Cash Flow Hedging Instrument Liability - Gross Liability	707	1,065
Derivative Designated as Cash Flow Hedging Instrument Liability - Gross Asset	0	0
Derivative, Net Liability Position, Aggregate Fair Value	$ 707	$ 1,065

Derivative Instruments And He56

Derivative Instruments And Hedging Activities schedule of Realized Gain (Loss) (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014
Derivative Instruments, Gain (Loss) [Line Items]
Derivative Instruments Not Designated as Hedging Instruments, Gain (Loss), Net	$ 5,044	$ (24,572)	$ 27,030	$ (24,594)
Cost of Sales [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Derivative Instruments Not Designated as Hedging Instruments, Gain (Loss), Net	5,292	(24,432)	27,574	(24,406)
Operating Expense [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Derivative Instruments Not Designated as Hedging Instruments, Gain (Loss), Net	$ (248)	$ (140)	$ (544)	$ (188)

Equity (Changes To Equity) (Det

Equity (Changes To Equity) (Details) - USD ($) $ in Thousands		3 Months Ended		6 Months Ended
		Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Balance at December 31, 2014				$ 5,523,584
Net income		$ 373,187	$ 185,153	615,848	$ 349,115
Other comprehensive income (loss), net of tax		(3,547)	$ 20,923	(15,523)	74,223
Purchase of treasury stock				(320,132)	$ (20,135)
Balance at June 30, 2015		$ 5,603,059		$ 5,603,059
Shares Paid for Tax Withholding for Share Based Compensation				1,215
Stock Repurchase Program, Number of Shares Authorized to be Repurchased		1,000,000,000		1,000,000,000
Stock Repurchase Program, Remaining Authorized Repurchase Amount		$ 734,900		$ 734,900
Stock Repurchase Program, Authorized Amount		$ 300,000		300,000
Shares Purchased under Accelerated Share Repurchase Forward Contract		5,500,000
Payments for Accelerated Stock Repurchase		$ (240,000)
Accelerated Stock Repurchase Forward Contract		(60,000)		(60,000)
Holly Corporation Stockholders' Equity [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Balance at December 31, 2014				5,523,584
Net income				587,700
Dividends				(125,192)
Distributions to noncontrolling interest holders				0
Other comprehensive income (loss), net of tax				(15,204)
Equity-based compensation				12,461
Tax attributable to equity-based compensation				(113)
Purchase of treasury stock	[1]			(380,177)
Purchase of units for incentive grants - HEP				0
Other				0
Balance at June 30, 2015		5,603,059		5,603,059
Noncontrolling Interest [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Balance at December 31, 2014				577,135
Net income				28,148
Dividends				0
Distributions to noncontrolling interest holders				(41,596)
Other comprehensive income (loss), net of tax				(319)
Equity-based compensation				1,761
Tax attributable to equity-based compensation				0
Purchase of treasury stock	[1]			0
Purchase of units for incentive grants - HEP				(247)
Other				14
Balance at June 30, 2015		564,896		564,896
Stockholders' Equity, Total [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Balance at December 31, 2014				6,100,719
Net income				615,848
Dividends				(125,192)
Distributions to noncontrolling interest holders				(41,596)
Other comprehensive income (loss), net of tax				(15,523)
Equity-based compensation				14,222
Tax attributable to equity-based compensation				(113)
Purchase of treasury stock	[1]			(380,177)
Purchase of units for incentive grants - HEP				(247)
Other				14
Balance at June 30, 2015		$ 6,167,955		$ 6,167,955
[1]	Includes 1,215 shares withheld under the terms of stock-based compensation agreements to provide funds for the payment of payroll and income taxes due at the vesting of share-based awards.

Other Comprehensive Income (L58

Other Comprehensive Income (Loss) (Components And Allocated Tax Effects Of Other Comprehensive Income (Loss)) (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014
Other Comprehensive Income (Loss) Components and Tax Effects [Line Items]
Net Unrealized Gain (Loss) on Marketable Securities before Taxes	$ (63)	$ 25	$ 5	$ 36
Net unrealized gain (loss) on hedging instruments	(5,809)	34,315	(25,128)	121,398
Net change in pension and other post-retirement benefit obligation	0	0	0	(89)
Other comprehensive income (loss)	(5,872)	34,340	(25,123)	121,345
Less other comprehensive income attributable to noncontrolling interest	135	(453)	(319)	(395)
Other Comprehensive Income (Loss), before Tax, Portion Attributable to Stockholders	(6,007)	34,793	(24,804)	121,740
Net Unrealized Gain (loss) on Marketable Securities, Tax	(25)	17	2	14
Net unrealized gain (loss) on hedging instruments, tax expense (benefit)	(2,300)	13,400	(9,602)	47,143
Net change in Pension and Other Postretirement Benefit Plans, Tax				(35)
Other comprehensive income, tax expense	(2,325)	13,417	(9,600)	47,122
Other Comprehensive Income (Loss), Tax, Portion Attributable to Stockholders	(2,325)	13,417	(9,600)	47,122
Net unrealized gain (loss) on marketable securities, after tax	(38)	8	3	22
Net unrealized gain (loss) on hedging instruments, after tax	(3,509)	20,915	(15,526)	74,255
Net Change in Pension and Other Post-retirement Benefit Obligations, After Tax				(54)
Other comprehensive income (loss), net of tax	(3,547)	20,923	(15,523)	74,223
Less other comprehensive income attributable to noncontrolling interest, after tax	135	(453)	(319)	(395)
Other Comprehensive Income (Loss) Portion Attributable to Stockholders	$ (3,682)	$ 21,376	$ (15,204)	$ 74,618

Other Comprehensive Income (L59

Other Comprehensive Income (Loss) (Accumulated Other Comprehensive Loss In Equity) (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Income Tax Expense (Benefit)	$ 206,990	$ 101,332	$ 336,718	$ 188,946
Net of tax	373,187	185,153	615,848	349,115
Sales and other revenues	3,701,912	5,372,600	6,708,538	10,163,653
Operating Costs	246,165	271,654	509,761	545,620
Interest Expense	10,559	10,136	20,713	22,483
Net Income (Loss) Attributable to Noncontrolling Interest	12,363	8,724	28,148	20,625
Net of Tax and Noncontrolling Interest	360,824	176,429	587,700	328,490
Other comprehensive income (loss), net of tax	(3,547)	20,923	(15,523)	74,223
Income (Loss) from Continuing Operations before Income Taxes, Extraordinary Items, Noncontrolling Interest	580,177	286,485	952,566	538,061
Reclassification out of Accumulated Other Comprehensive Income [Member]
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Other comprehensive income (loss), net of tax	8,785	7,791	11,391	11,027
Accumulated Net Investment Gain (Loss) Attributable to Parent [Member] | Reclassification out of Accumulated Other Comprehensive Income [Member]
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Interest Income, Other	6	0	4	1
Income Tax Expense (Benefit)	2	0	18	0
Net of tax	4	0	28	1
Marketable Securities, Gain (Loss)			42	0
Income (Loss) from Continuing Operations before Income Taxes, Extraordinary Items, Noncontrolling Interest			46	1
Accumulated Net Gain (Loss) from Cash Flow Hedges Attributable to Parent [Member] | Reclassification out of Accumulated Other Comprehensive Income [Member]
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Income Tax Expense (Benefit)	5,543	4,918	7,174	6,961
Net of tax	8,461	7,456	10,721	10,365
Income (Loss) from Continuing Operations, Including Portion Attributable to Noncontrolling Interest	14,004	12,374	17,895	17,326
Net Income (Loss) Attributable to Noncontrolling Interest	320	335	642	661
Net of Tax and Noncontrolling Interest	8,781	7,791	11,363	11,026
Commodity Contract [Member] | Accumulated Net Gain (Loss) from Cash Flow Hedges Attributable to Parent [Member] | Reclassification out of Accumulated Other Comprehensive Income [Member]
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Sales and other revenues	49,752	(48,942)	98,932	(74,273)
Cost of Products Sold	(30,964)	61,124	(71,733)	90,441
Operating Costs	(4,256)	745	(8,245)	2,249
Interest Rate Contract [Member] | Accumulated Net Gain (Loss) from Cash Flow Hedges Attributable to Parent [Member] | Reclassification out of Accumulated Other Comprehensive Income [Member]
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Interest Expense	(528)	(553)	(1,059)	(1,091)
HEP [Member]
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Sales and other revenues	$ 83,479	$ 75,024	$ 173,235	$ 162,036

Other Comprehensive Income (L60

Other Comprehensive Income (Loss) Other Comprehensive Income Balance Components (Details) - USD ($) $ in Thousands	Jun. 30, 2015	Dec. 31, 2014
Class of Stock [Line Items]
Unrealized gain on post-retirement benefit obligations	$ 20,689	$ 20,689
Unrealized gain (loss) on marketable securities	(82)	(85)
Unrealized gain (loss) on hedging activities, net of noncontrolling interest	(7,917)	7,290
Accumulated other comprehensive income	$ 12,690	$ 27,894

Post-retirement Plan (Narrative

Post-retirement Plan (Narrative) (Details) - USD ($) $ in Millions	3 Months Ended	6 Months Ended
	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014
Defined Benefit Plan Disclosure [Line Items]
Pension Contributions		$ 11
Pension Plans, Defined Benefit [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Amortization of Transition Obligations (Assets)	$ 2.9		$ 5.5

Post-retirement Plan (Net Perio

Post-retirement Plan (Net Periodic Pension Expense) (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014
Defined Benefit Plan Disclosure [Line Items]
Service cost - benefit earned during the period	$ 424	$ 224	$ 848	$ 448
Interest cost on projected benefit obligations	205	160	410	319
Amortization of prior service cost	(871)	(1,074)	(1,742)	(2,148)
Amortization of net loss	46	0	92	0
Net periodic post-retirement expense (credit)	$ (196)	$ (690)	$ (392)	$ (1,381)

Segment Information (Narrative)

Segment Information (Narrative) (Details) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2015USD ($)	Jun. 30, 2014USD ($)	Jun. 30, 2015USD ($)	Jun. 30, 2014USD ($)
Segment Reporting Information [Line Items]
Revenues	$ 15.2	$ 10.5	$ 32.7	$ 25.7
Reportable segments	2
SLC Pipeline [Member] | HEP [Member]
Segment Reporting Information [Line Items]
Equity Method Investment, Ownership Percentage	25.00%		25.00%
UNEV Pipeline [Member]
Segment Reporting Information [Line Items]
Equity Method Investment, Ownership Percentage	75.00%		75.00%

Segment Information (Schedule O

Segment Information (Schedule Of Segment Reporting Information) (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014	Dec. 31, 2014
Segment Reporting Information [Line Items]
Sales and other revenues	$ 3,701,912	$ 5,372,600	$ 6,708,538	$ 10,163,653
Depreciation and amortization	87,803	101,390	167,815	181,938
Income (loss) from operations	589,832	296,345	978,454	567,341
Capital expenditures	144,294	120,488	316,913	244,769
Cash, Cash Equivalents, and Short-term Investments	626,218		626,218		$ 1,042,095
Total assets	9,145,286		9,145,286		9,230,640
Long-term Debt	933,162		933,162		1,054,890
Corporate And Other [Member]
Segment Reporting Information [Line Items]
Sales and other revenues	151	506	369	1,621
Depreciation and amortization	2,915	2,280	5,569	4,310
Income (loss) from operations	(26,739)	(27,802)	(55,688)	(53,357)
Capital expenditures	4,578	9,976	9,003	13,710
Cash, Cash Equivalents, and Short-term Investments	615,751		615,751		1,039,177
Total assets	727,036		727,036		1,150,865
Long-term Debt	32,257		32,257		187,311
Consolidation, Eliminations [Member]
Segment Reporting Information [Line Items]
Sales and other revenues	(68,211)	(64,844)	(140,839)	(136,998)
Depreciation and amortization	(207)	(207)	(414)	(414)
Income (loss) from operations	(576)	(531)	(1,116)	(1,054)
Capital expenditures	0	0	0	0
Cash, Cash Equivalents, and Short-term Investments	0		0		0
Total assets	(309,064)		(309,064)		(320,042)
Long-term Debt	0		0		0
2911 Petroleum Refining [Member]
Segment Reporting Information [Line Items]
Sales and other revenues	3,686,493	5,361,914	6,675,773	10,136,994
Depreciation and amortization	70,435	83,840	133,710	147,381
Income (loss) from operations	576,313	292,214	950,214	543,423
Capital expenditures	128,336	92,334	258,097	192,277
Cash, Cash Equivalents, and Short-term Investments	43		43		88
Total assets	7,268,245		7,268,245		6,965,245
Long-term Debt	0		0		0
HEP [Member]
Segment Reporting Information [Line Items]
Sales and other revenues	83,479	75,024	173,235	162,036
Depreciation and amortization	14,660	15,477	28,950	30,661
Income (loss) from operations	40,834	32,464	85,044	78,329
Capital expenditures	11,380	$ 18,178	49,813	$ 38,782
Cash, Cash Equivalents, and Short-term Investments	10,424		10,424		2,830
Total assets	1,459,069		1,459,069		1,434,572
Long-term Debt	$ 900,905		$ 900,905		$ 867,579

Supplemental Guarantor_Non-Gu65

Supplemental Guarantor/Non-Guarantor Financial Information (Narrative) (Details)	6 Months Ended
	Jun. 30, 2015
HEP [Member]
Guarantor Obligations [Line Items]
Percentage of ownership in variable interest entity	39.00%

Supplemental Guarantor_Non-Gu66

Supplemental Guarantor/Non-Guarantor Financial Information Consolidating Balance Sheet (Details) - USD ($) $ in Thousands	Jun. 30, 2015	Dec. 31, 2014	Jun. 30, 2014	Dec. 31, 2013
Condensed Financial Statements, Captions [Line Items]
Cash and cash equivalents	$ 233,359	$ 567,985	$ 1,118,302	$ 940,103
Marketable securities	392,859	474,110
Accounts receivable, net	626,107	589,905
Intercompany accounts receivable	0	0
Inventories	1,189,918	1,035,131
Income taxes receivable	8,351	11,719
Prepayments and other	68,945	104,148
Total current assets	2,519,539	2,782,998
Properties, plants and equipment, net	3,868,395	3,670,539
Investment in subsidiaries	0	0
Intangibles and other assets	2,757,352	2,777,103
Total assets	9,145,286	9,230,640
Accounts payable	1,050,392	1,108,138
Intercompany accounts payable	0	0
Income tax payable	7,569	19,642
Accrued liabilities	113,246	106,214
Deferred income tax liabilities	69,284	17,409
Total current liabilities	1,240,491	1,251,403
Long-term debt	933,162	1,054,890
Liability to HEP	0	0
Deferred income tax liabilities	627,537	646,870
Other long-term liabilities	176,141	176,758
Investment in HEP	0	0
Equity – HollyFrontier	5,603,059	5,523,584
Equity – noncontrolling interest	564,896	577,135
Total liabilities and equity	9,145,286	9,230,640
Parent Company [Member]
Condensed Financial Statements, Captions [Line Items]
Cash and cash equivalents	222,905	565,080	1,108,232	931,920
Marketable securities	392,859	474,068
Accounts receivable, net	8,171	5,107
Intercompany accounts receivable	0	0
Inventories	0	0
Income taxes receivable	8,351	11,719
Prepayments and other	13,363	14,734
Total current assets	645,649	1,070,708
Properties, plants and equipment, net	34,079	31,808
Investment in subsidiaries	6,868,051	5,912,233
Intangibles and other assets	29,262	30,082
Total assets	7,577,041	7,044,831
Accounts payable	3,543	11,457
Intercompany accounts payable	1,160,797	568,881
Income tax payable	7,569	19,642
Accrued liabilities	41,886	41,403
Deferred income tax liabilities	69,284	17,409
Total current liabilities	1,283,079	658,792
Long-term debt	25,000	179,144
Liability to HEP	0	0
Deferred income tax liabilities	627,205	646,503
Other long-term liabilities	43,822	43,451
Investment in HEP	0	0
Equity – HollyFrontier	5,597,935	5,516,941
Equity – noncontrolling interest	0	0
Total liabilities and equity	7,577,041	7,044,831
Guarantor Restricted Subsidiaries [Member]
Condensed Financial Statements, Captions [Line Items]
Cash and cash equivalents	0	0	3,777	1,817
Marketable securities	0	42
Accounts receivable, net	611,393	579,526
Intercompany accounts receivable	718,610	171,341
Inventories	1,187,984	1,033,191
Income taxes receivable	0	0
Prepayments and other	59,273	95,194
Total current assets	2,577,260	1,879,294
Properties, plants and equipment, net	3,043,121	2,873,350
Investment in subsidiaries	335,342	291,912
Intangibles and other assets	2,371,616	2,388,844
Total assets	8,327,339	7,433,400
Accounts payable	1,067,290	1,117,429
Intercompany accounts payable	0	0
Income tax payable	0	0
Accrued liabilities	50,843	45,331
Deferred income tax liabilities	0	0
Total current liabilities	1,118,133	1,162,760
Long-term debt	32,257	33,167
Liability to HEP	227,304	233,217
Deferred income tax liabilities	0	0
Other long-term liabilities	81,594	92,023
Investment in HEP	0	0
Equity – HollyFrontier	6,868,051	5,912,233
Equity – noncontrolling interest	0	0
Total liabilities and equity	8,327,339	7,433,400
Non Guarantor Restricted Subsidiaries [Member]
Condensed Financial Statements, Captions [Line Items]
Cash and cash equivalents	30	75	227	14
Marketable securities	0	0
Accounts receivable, net	3,068	3,774
Intercompany accounts receivable	442,187	397,540
Inventories	0	0
Income taxes receivable	0	0
Prepayments and other	0	0
Total current assets	445,285	401,389
Properties, plants and equipment, net	949	902
Investment in subsidiaries	0	0
Intangibles and other assets	25,000	25,000
Total assets	471,234	427,291
Accounts payable	0	2
Intercompany accounts payable	0	0
Income tax payable	0	0
Accrued liabilities	1,127	1,382
Deferred income tax liabilities	0	0
Total current liabilities	1,127	1,384
Long-term debt	0	0
Liability to HEP	0	0
Deferred income tax liabilities	0	0
Other long-term liabilities	0	0
Investment in HEP	134,765	133,995
Equity – HollyFrontier	335,342	291,912
Equity – noncontrolling interest	0	0
Total liabilities and equity	471,234	427,291
Eliminations [Member]
Condensed Financial Statements, Captions [Line Items]
Cash and cash equivalents	0	0	0	0
Marketable securities	0	0
Accounts receivable, net	0	0
Intercompany accounts receivable	(1,160,797)	(568,881)
Inventories	0	0
Income taxes receivable	0	0
Prepayments and other	0	0
Total current assets	(1,160,797)	(568,881)
Properties, plants and equipment, net	0	0
Investment in subsidiaries	(7,203,393)	(6,204,145)
Intangibles and other assets	(25,000)	(25,000)
Total assets	(8,389,190)	(6,798,026)
Accounts payable	0	0
Intercompany accounts payable	(1,160,797)	(568,881)
Income tax payable	0	0
Accrued liabilities	0	0
Deferred income tax liabilities	0	0
Total current liabilities	(1,160,797)	(568,881)
Long-term debt	(25,000)	(25,000)
Liability to HEP	0	0
Deferred income tax liabilities	0	0
Other long-term liabilities	0	0
Investment in HEP	0	0
Equity – HollyFrontier	(7,203,393)	(6,204,145)
Equity – noncontrolling interest	0	0
Total liabilities and equity	(8,389,190)	(6,798,026)
Holly Frontier Corp. Before Consolidation Of HEP [Member]
Condensed Financial Statements, Captions [Line Items]
Cash and cash equivalents	222,935	565,155	1,112,236	933,751
Marketable securities	392,859	474,110
Accounts receivable, net	622,632	588,407
Intercompany accounts receivable	0	0
Inventories	1,187,984	1,033,191
Income taxes receivable	8,351	11,719
Prepayments and other	72,636	109,928
Total current assets	2,507,397	2,782,510
Properties, plants and equipment, net	3,078,149	2,906,060
Investment in subsidiaries	0	0
Intangibles and other assets	2,400,878	2,418,926
Total assets	7,986,424	8,107,496
Accounts payable	1,070,833	1,128,888
Intercompany accounts payable	0	0
Income tax payable	7,569	19,642
Accrued liabilities	93,856	88,116
Deferred income tax liabilities	69,284	17,409
Total current liabilities	1,241,542	1,254,055
Long-term debt	32,257	187,311
Liability to HEP	227,304	233,217
Deferred income tax liabilities	627,205	646,503
Other long-term liabilities	125,416	135,474
Investment in HEP	134,765	133,995
Equity – HollyFrontier	5,597,935	5,516,941
Equity – noncontrolling interest	0	0
Total liabilities and equity	7,986,424	8,107,496
Non-Guarantor Non-Restricted Subsidiaries (HEP Segment) [Member]
Condensed Financial Statements, Captions [Line Items]
Cash and cash equivalents	10,424	2,830	6,066	6,352
Marketable securities	0	0
Accounts receivable, net	40,044	40,129
Intercompany accounts receivable	0	0
Inventories	1,934	1,940
Income taxes receivable	0	0
Prepayments and other	2,804	2,443
Total current assets	55,206	47,342
Properties, plants and equipment, net	1,042,975	1,024,311
Investment in subsidiaries	0	0
Intangibles and other assets	360,888	362,919
Total assets	1,459,069	1,434,572
Accounts payable	16,128	17,881
Intercompany accounts payable	0	0
Income tax payable	0	0
Accrued liabilities	25,885	26,321
Deferred income tax liabilities	0	0
Total current liabilities	42,013	44,202
Long-term debt	900,905	867,579
Liability to HEP	0	0
Deferred income tax liabilities	332	367
Other long-term liabilities	56,283	47,170
Investment in HEP	0	0
Equity – HollyFrontier	365,071	380,172
Equity – noncontrolling interest	94,465	95,082
Total liabilities and equity	1,459,069	1,434,572
Eliminations [Member]
Condensed Financial Statements, Captions [Line Items]
Cash and cash equivalents	0	0	$ 0	$ 0
Marketable securities	0	0
Accounts receivable, net	(36,569)	(38,631)
Intercompany accounts receivable	0	0
Inventories	0	0
Income taxes receivable	0	0
Prepayments and other	(6,495)	(8,223)
Total current assets	(43,064)	(46,854)
Properties, plants and equipment, net	(252,729)	(259,832)
Investment in subsidiaries	0	0
Intangibles and other assets	(4,414)	(4,742)
Total assets	(300,207)	(311,428)
Accounts payable	(36,569)	(38,631)
Intercompany accounts payable	0	0
Income tax payable	0	0
Accrued liabilities	(6,495)	(8,223)
Deferred income tax liabilities	0	0
Total current liabilities	(43,064)	(46,854)
Long-term debt	0	0
Liability to HEP	(227,304)	(233,217)
Deferred income tax liabilities	0	0
Other long-term liabilities	(5,558)	(5,886)
Investment in HEP	(134,765)	(133,995)
Equity – HollyFrontier	(359,947)	(373,529)
Equity – noncontrolling interest	470,431	482,053
Total liabilities and equity	$ (300,207)	$ (311,428)

Supplemental Guarantor_Non-Gu67

Supplemental Guarantor/Non-Guarantor Financial Information Consolidating Statement of Income (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014
Condensed Financial Statements, Captions [Line Items]
Sales and other revenues	$ 3,701,912	$ 5,372,600	$ 6,708,538	$ 10,163,653
Cost of products sold	2,887,475	4,674,846	5,138,848	8,813,466
Lower of cost or market inventory valuation adjustment	(135,480)	0	(142,026)	0
Operating Costs	246,165	271,654	509,761	545,620
General and administrative	26,117	28,365	55,686	55,288
Depreciation and amortization	87,803	101,390	167,815	181,938
Total operating costs and expenses	3,112,080	5,076,255	5,730,084	9,596,312
Income (loss) from operations	589,832	296,345	978,454	567,341
Earnings (loss) of equity method investments	631	(908)	(7,176)	(1,709)
Interest income (expense)	(9,791)	(8,952)	(18,983)	(19,894)
Loss on early extinguishment of debt	(1,368)	0	(1,368)	(7,677)
Gain on sale of assets	873	0	1,639	0
Nonoperating Income (Expense)	(9,655)	(9,860)	(25,888)	(29,280)
Income (Loss) before Income Taxes	580,177	286,485	952,566	538,061
Income tax provision	206,990	101,332	336,718	188,946
Net income	373,187	185,153	615,848	349,115
Less net income attributable to noncontrolling interest	12,363	8,724	28,148	20,625
Net income attributable to HollyFrontier stockholders	360,824	176,429	587,700	328,490
Comprehensive income attributable to HollyFrontier stockholders	357,142	197,805	572,496	403,108
Parent Company [Member]
Condensed Financial Statements, Captions [Line Items]
Sales and other revenues	168	179	274	280
Cost of products sold	0	0	0	0
Lower of cost or market inventory valuation adjustment	0		0
Operating Costs	0	0	0	0
General and administrative	22,808	24,343	48,632	45,450
Depreciation and amortization	2,582	2,010	4,908	3,800
Total operating costs and expenses	25,390	26,353	53,540	49,250
Income (loss) from operations	(25,222)	(26,174)	(53,266)	(48,970)
Earnings (loss) of equity method investments	593,825	303,788	978,226	566,147
Interest income (expense)	(537)	(373)	(839)	(797)
Loss on early extinguishment of debt	(1,368)		(1,368)	0
Gain on sale of assets	714		720
Nonoperating Income (Expense)	592,634	303,415	976,739	565,350
Income (Loss) before Income Taxes	567,412	277,241	923,473	516,380
Income tax provision	207,054	101,304	336,681	188,843
Net income	360,358	175,937	586,792	327,537
Less net income attributable to noncontrolling interest	0	0	0	0
Net income attributable to HollyFrontier stockholders	360,358	175,937	586,792	327,537
Comprehensive income attributable to HollyFrontier stockholders	356,676	197,313	571,588	402,155
Guarantor Subsidiaries [Member]
Condensed Financial Statements, Captions [Line Items]
Sales and other revenues	3,686,476	5,362,277	6,675,868	10,137,400
Cost of products sold	2,954,989	4,738,586	5,277,870	8,948,308
Lower of cost or market inventory valuation adjustment	(135,480)		(142,026)
Operating Costs	220,790	247,451	456,793	498,927
General and administrative	571	1,469	986	4,095
Depreciation and amortization	74,120	87,473	141,044	154,580
Total operating costs and expenses	3,114,990	5,074,979	5,734,667	9,605,910
Income (loss) from operations	571,486	287,298	941,201	531,490
Earnings (loss) of equity method investments	20,334	14,546	32,369	30,568
Interest income (expense)	1,918	1,944	3,967	4,089
Loss on early extinguishment of debt	0		0	0
Gain on sale of assets	87		689
Nonoperating Income (Expense)	22,339	16,490	37,025	34,657
Income (Loss) before Income Taxes	593,825	303,788	978,226	566,147
Income tax provision	0	0	0	0
Net income	593,825	303,788	978,226	566,147
Less net income attributable to noncontrolling interest	0	0	0	0
Net income attributable to HollyFrontier stockholders	593,825	303,788	978,226	566,147
Comprehensive income attributable to HollyFrontier stockholders	588,016	338,556	953,098	687,940
Non Guarantor Restricted Subsidiaries [Member]
Condensed Financial Statements, Captions [Line Items]
Sales and other revenues	0	(36)	0	935
Cost of products sold	0	0	0	0
Lower of cost or market inventory valuation adjustment	0		0
Operating Costs	0	0	0	0
General and administrative	42	37	82	76
Depreciation and amortization	8	0	16	0
Total operating costs and expenses	50	37	98	76
Income (loss) from operations	(50)	(73)	(98)	859
Earnings (loss) of equity method investments	20,175	16,132	40,617	32,415
Interest income (expense)	199	143	374	273
Loss on early extinguishment of debt	0		0	0
Gain on sale of assets	0		0
Nonoperating Income (Expense)	20,374	16,275	40,991	32,688
Income (Loss) before Income Taxes	20,324	16,202	40,893	33,547
Income tax provision	0	0	0	0
Net income	20,324	16,202	40,893	33,547
Less net income attributable to noncontrolling interest	(10)	0	(17)	0
Net income attributable to HollyFrontier stockholders	20,334	16,202	40,910	33,547
Comprehensive income attributable to HollyFrontier stockholders	20,422	15,909	40,703	33,291
Eliminations From Consolidation Of Restricted Subsidiaries Member
Condensed Financial Statements, Captions [Line Items]
Sales and other revenues	0	0	0	0
Cost of products sold	0	0	0	0
Lower of cost or market inventory valuation adjustment	0		0
Operating Costs	0	0	0	0
General and administrative	0	0	0	0
Depreciation and amortization	0	0	0	0
Total operating costs and expenses	0	0	0	0
Income (loss) from operations	0	0	0	0
Earnings (loss) of equity method investments	(614,159)	(319,990)	(1,019,136)	(599,694)
Interest income (expense)	0	0	0	0
Loss on early extinguishment of debt	0		0	0
Gain on sale of assets	0		0
Nonoperating Income (Expense)	(614,159)	(319,990)	(1,019,136)	(599,694)
Income (Loss) before Income Taxes	(614,159)	(319,990)	(1,019,136)	(599,694)
Income tax provision	0	0	0	0
Net income	(614,159)	(319,990)	(1,019,136)	(599,694)
Less net income attributable to noncontrolling interest	0	0	0	0
Net income attributable to HollyFrontier stockholders	(614,159)	(319,990)	(1,019,136)	(599,694)
Comprehensive income attributable to HollyFrontier stockholders	(608,438)	(354,465)	(993,801)	(721,231)
Holly Frontier Corp. Before Consolidation Of HEP [Member]
Condensed Financial Statements, Captions [Line Items]
Sales and other revenues	3,686,644	5,362,420	6,676,142	10,138,615
Cost of products sold	2,954,989	4,738,586	5,277,870	8,948,308
Lower of cost or market inventory valuation adjustment	(135,480)		(142,026)
Operating Costs	220,790	247,451	456,793	498,927
General and administrative	23,421	25,849	49,700	49,621
Depreciation and amortization	76,710	89,483	145,968	158,380
Total operating costs and expenses	3,140,430	5,101,369	5,788,305	9,655,236
Income (loss) from operations	546,214	261,051	887,837	483,379
Earnings (loss) of equity method investments	20,175	14,476	32,076	29,436
Interest income (expense)	1,580	1,714	3,502	3,565
Loss on early extinguishment of debt	(1,368)		(1,368)	0
Gain on sale of assets	801		1,409
Nonoperating Income (Expense)	21,188	16,190	35,619	33,001
Income (Loss) before Income Taxes	567,402	277,241	923,456	516,380
Income tax provision	207,054	101,304	336,681	188,843
Net income	360,348	175,937	586,775	327,537
Less net income attributable to noncontrolling interest	(10)	0	(17)	0
Net income attributable to HollyFrontier stockholders	360,358	175,937	586,792	327,537
Comprehensive income attributable to HollyFrontier stockholders	356,676	197,313	571,588	402,155
Non-Guarantor Non-Restricted Subsidiaries (HEP Segment) [Member]
Condensed Financial Statements, Captions [Line Items]
Sales and other revenues	83,479	75,024	173,235	162,036
Cost of products sold	0	0	0	0
Lower of cost or market inventory valuation adjustment	0		0
Operating Costs	25,289	24,567	53,255	47,379
General and administrative	2,696	2,516	5,986	5,667
Depreciation and amortization	14,660	15,477	28,950	30,661
Total operating costs and expenses	42,645	42,560	88,191	83,707
Income (loss) from operations	40,834	32,464	85,044	78,329
Earnings (loss) of equity method investments	631	748	1,365	1,270
Interest income (expense)	(9,053)	(8,329)	(17,820)	(18,780)
Loss on early extinguishment of debt	0		0	(7,677)
Gain on sale of assets	72		230
Nonoperating Income (Expense)	(8,350)	(7,581)	(16,225)	(25,187)
Income (Loss) before Income Taxes	32,484	24,883	68,819	53,142
Income tax provision	(64)	28	37	103
Net income	32,548	24,855	68,782	53,039
Less net income attributable to noncontrolling interest	1,743	1,416	5,770	5,053
Net income attributable to HollyFrontier stockholders	30,805	23,439	63,012	47,986
Comprehensive income attributable to HollyFrontier stockholders	30,893	23,145	62,805	47,730
Consolidation, Eliminations [Member]
Condensed Financial Statements, Captions [Line Items]
Sales and other revenues	(68,211)	(64,844)	(140,839)	(136,998)
Cost of products sold	(67,514)	(63,740)	(139,022)	(134,842)
Lower of cost or market inventory valuation adjustment	0		0
Operating Costs	86	(364)	(287)	(686)
General and administrative	0	0	0	0
Depreciation and amortization	(3,567)	(3,570)	(7,103)	(7,103)
Total operating costs and expenses	(70,995)	(67,674)	(146,412)	(142,631)
Income (loss) from operations	2,784	2,830	5,573	5,633
Earnings (loss) of equity method investments	(20,175)	(16,132)	(40,617)	(32,415)
Interest income (expense)	(2,318)	(2,337)	(4,665)	(4,679)
Loss on early extinguishment of debt	0		0	0
Gain on sale of assets	0		0
Nonoperating Income (Expense)	(22,493)	(18,469)	(45,282)	(37,094)
Income (Loss) before Income Taxes	(19,709)	(15,639)	(39,709)	(31,461)
Income tax provision	0	0	0	0
Net income	(19,709)	(15,639)	(39,709)	(31,461)
Less net income attributable to noncontrolling interest	10,630	7,308	22,395	15,572
Net income attributable to HollyFrontier stockholders	(30,339)	(22,947)	(62,104)	(47,033)
Comprehensive income attributable to HollyFrontier stockholders	$ (30,427)	$ (22,653)	$ (61,897)	$ (46,777)

Supplemental Guarantor_Non-Gu68

Supplemental Guarantor/Non-Guarantor Financial Information Consolidating Statement of Cash Flows (Details) - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014
Condensed Financial Statements, Captions [Line Items]
Cash flows from operating activities	$ 569,940	$ 721,479
Additions to properties, plants and equipment	(267,100)	(205,987)
Purchases of marketable securities	(246,008)	(498,080)
Sales and maturities of marketable securities	327,310	543,604
Other, net	2,232	5,021
Net Advances to Parent	0	0
Net cash used for investing activities	(233,379)	(194,224)
Net borrowings under credit agreement – HEP	33,000	180,000
Redemption of Senior Notes - HEP		(156,188)
Redemption of senior notes - HFC	(155,156)
Proceeds from product financing arrangement	0	5,964
Purchase of treasury stock	(320,132)	(20,135)
Accelerated stock repurchase forward contract	(60,000)	0
Dividends	(125,192)	(323,088)
Payments to Noncontrolling Interests	(41,596)	(38,548)
Excess tax benefit from equity based compensation	0	3,778
Other, net	(2,111)	(839)
Net advances from subsidiaries	0	0
Net cash provided by (used for) financing activities	(671,187)	(349,056)
Increase (decrease) for the period	(334,626)	178,199
Beginning of period	567,985	940,103
End of period	233,359	1,118,302
Parent Company [Member]
Condensed Financial Statements, Captions [Line Items]
Cash flows from operating activities	(348,026)	(144,972)
Additions to properties, plants and equipment	(7,180)	(6,329)
Purchases of marketable securities	(246,008)	(498,080)
Sales and maturities of marketable securities	327,310	543,604
Other, net	0	0
Net Advances to Parent	0	0
Net cash used for investing activities	74,122	39,195
Net borrowings under credit agreement – HEP	0
Redemption of Senior Notes - HEP		$ 0
Redemption of senior notes - HFC	(155,156)
Proceeds from product financing arrangement
Purchase of treasury stock	(320,132)	$ (20,135)
Accelerated stock repurchase forward contract	(60,000)
Dividends	(125,192)	(323,088)
Payments to Noncontrolling Interests	0	0
Excess tax benefit from equity based compensation		3,778
Other, net	(113)	0
Net advances from subsidiaries	(592,322)	(621,534)
Net cash provided by (used for) financing activities	(68,271)	282,089
Increase (decrease) for the period	(342,175)	176,312
Beginning of period	565,080	931,920
End of period	222,905	1,108,232
Guarantor Restricted Subsidiaries [Member]
Condensed Financial Statements, Captions [Line Items]
Cash flows from operating activities	803,368	773,845
Additions to properties, plants and equipment	(259,857)	(199,132)
Purchases of marketable securities	0	0
Sales and maturities of marketable securities	0	0
Other, net	1,846	5,021
Net Advances to Parent	(544,445)	(582,930)
Net cash used for investing activities	(802,456)	(777,041)
Net borrowings under credit agreement – HEP	0
Redemption of Senior Notes - HEP		0
Redemption of senior notes - HFC	0
Proceeds from product financing arrangement		5,964
Purchase of treasury stock	0	0
Accelerated stock repurchase forward contract	0
Dividends	0	0
Payments to Noncontrolling Interests	0	0
Excess tax benefit from equity based compensation		0
Other, net	(912)	(808)
Net advances from subsidiaries	0	0
Net cash provided by (used for) financing activities	(912)	5,156
Increase (decrease) for the period	0	1,960
Beginning of period	0	1,817
End of period	0	3,777
Non Guarantor Restricted Subsidiaries [Member]
Condensed Financial Statements, Captions [Line Items]
Cash flows from operating activities	47,880	38,968
Additions to properties, plants and equipment	(63)	(526)
Purchases of marketable securities	0	0
Sales and maturities of marketable securities	0	0
Other, net	0	0
Net Advances to Parent	(47,877)	(38,604)
Net cash used for investing activities	(47,940)	(39,130)
Net borrowings under credit agreement – HEP	0
Redemption of Senior Notes - HEP		$ 0
Redemption of senior notes - HFC	0
Proceeds from product financing arrangement
Purchase of treasury stock	0	$ 0
Accelerated stock repurchase forward contract	0
Dividends	0	0
Payments to Noncontrolling Interests	0	0
Excess tax benefit from equity based compensation		0
Other, net	15	375
Net advances from subsidiaries	0	0
Net cash provided by (used for) financing activities	15	375
Increase (decrease) for the period	(45)	213
Beginning of period	75	14
End of period	30	227
Eliminations [Member]
Condensed Financial Statements, Captions [Line Items]
Cash flows from operating activities	0	0
Additions to properties, plants and equipment	0	0
Purchases of marketable securities	0	0
Sales and maturities of marketable securities	0	0
Other, net	0	0
Net Advances to Parent	592,322	621,534
Net cash used for investing activities	592,322	621,534
Net borrowings under credit agreement – HEP	0	0
Redemption of Senior Notes - HEP		$ 0
Redemption of senior notes - HFC	0
Proceeds from product financing arrangement
Purchase of treasury stock	0	$ 0
Accelerated stock repurchase forward contract	0
Dividends	0	0
Payments to Noncontrolling Interests	0	0
Excess tax benefit from equity based compensation		0
Other, net	0	0
Net advances from subsidiaries	(592,322)	(621,534)
Net cash provided by (used for) financing activities	(592,322)	(621,534)
Increase (decrease) for the period	0	0
Beginning of period	0	0
End of period	0	0
Holly Frontier Corp. Before Consolidation Of HEP [Member]
Condensed Financial Statements, Captions [Line Items]
Cash flows from operating activities	503,222	667,841
Additions to properties, plants and equipment	(267,100)	(205,987)
Purchases of marketable securities	(246,008)	(498,080)
Sales and maturities of marketable securities	327,310	543,604
Other, net	1,846	5,021
Net Advances to Parent	0	0
Net cash used for investing activities	(183,952)	(155,442)
Net borrowings under credit agreement – HEP	0
Redemption of Senior Notes - HEP		0
Redemption of senior notes - HFC	(155,156)
Proceeds from product financing arrangement		5,964
Purchase of treasury stock	(320,132)	(20,135)
Accelerated stock repurchase forward contract	(60,000)
Dividends	(125,192)	(323,088)
Payments to Noncontrolling Interests	0	0
Excess tax benefit from equity based compensation		3,778
Other, net	(1,010)	(433)
Net advances from subsidiaries	0	0
Net cash provided by (used for) financing activities	(661,490)	(333,914)
Increase (decrease) for the period	(342,220)	178,485
Beginning of period	565,155	933,751
End of period	222,935	1,112,236
Non-Guarantor Non-Restricted Subsidiaries (HEP Segment) [Member]
Condensed Financial Statements, Captions [Line Items]
Cash flows from operating activities	110,611	92,667
Additions to properties, plants and equipment	0	0
Purchases of marketable securities	0	0
Sales and maturities of marketable securities	0	0
Other, net	386	0
Net Advances to Parent	0	0
Net cash used for investing activities	(49,427)	(38,782)
Net borrowings under credit agreement – HEP	33,000	180,000
Redemption of Senior Notes - HEP		(156,188)
Redemption of senior notes - HFC	0
Proceeds from product financing arrangement		0
Purchase of treasury stock	0	0
Accelerated stock repurchase forward contract	0
Dividends	0	0
Payments to Noncontrolling Interests	(85,489)	(77,577)
Excess tax benefit from equity based compensation		0
Other, net	(1,101)	(406)
Net advances from subsidiaries	0	0
Net cash provided by (used for) financing activities	(53,590)	(54,171)
Increase (decrease) for the period	7,594	(286)
Beginning of period	2,830	6,352
End of period	10,424	6,066
Eliminations [Member]
Condensed Financial Statements, Captions [Line Items]
Cash flows from operating activities	(43,893)	(39,029)
Additions to properties, plants and equipment	0	0
Purchases of marketable securities	0	0
Sales and maturities of marketable securities	0	0
Other, net		0
Net Advances to Parent	0	0
Net cash used for investing activities	0	0
Redemption of Senior Notes - HEP		0
Redemption of senior notes - HFC	0
Proceeds from product financing arrangement		0
Purchase of treasury stock	0	0
Accelerated stock repurchase forward contract	0
Dividends	0	0
Payments to Noncontrolling Interests	43,893	39,029
Excess tax benefit from equity based compensation		0
Other, net	0	0
Net advances from subsidiaries	0	0
Net cash provided by (used for) financing activities	43,893	39,029
Increase (decrease) for the period	0	0
Beginning of period	0	0
End of period	0	0
HEP [Member]
Condensed Financial Statements, Captions [Line Items]
Additions to properties, plants and equipment	(49,813)	(38,782)
Redemption of senior notes - HFC	0	(156,188)
Beginning of period	2,830
End of period	10,424
HEP [Member] | Parent Company [Member]
Condensed Financial Statements, Captions [Line Items]
Additions to properties, plants and equipment	0	0
Net borrowings under credit agreement – HEP		0
HEP [Member] | Guarantor Restricted Subsidiaries [Member]
Condensed Financial Statements, Captions [Line Items]
Additions to properties, plants and equipment	0	0
Net borrowings under credit agreement – HEP		0
HEP [Member] | Non Guarantor Restricted Subsidiaries [Member]
Condensed Financial Statements, Captions [Line Items]
Additions to properties, plants and equipment	0	0
Net borrowings under credit agreement – HEP		0
HEP [Member] | Eliminations [Member]
Condensed Financial Statements, Captions [Line Items]
Additions to properties, plants and equipment	0
HEP [Member] | Holly Frontier Corp. Before Consolidation Of HEP [Member]
Condensed Financial Statements, Captions [Line Items]
Additions to properties, plants and equipment	0	0
Net borrowings under credit agreement – HEP		0
HEP [Member] | Non-Guarantor Non-Restricted Subsidiaries (HEP Segment) [Member]
Condensed Financial Statements, Captions [Line Items]
Additions to properties, plants and equipment	(49,813)	(38,782)
HEP [Member] | Eliminations [Member]
Condensed Financial Statements, Captions [Line Items]
Additions to properties, plants and equipment	0	0
Other, net	0
Net borrowings under credit agreement – HEP	$ 0	$ 0