HF Sinclair 10-Q 5 Nov 14 2014 Q3 Quarterly report Financial data

Document_And_Entity_Informatio

Document And Entity Information	9 Months Ended
	Sep. 30, 2014	Oct. 31, 2014
Document And Entity Information [Abstract]	'	'
Entity Registrant Name	'HollyFrontier Corp	'
Entity Central Index Key	'0000048039	'
Current Fiscal Year End Date	'--12-31	'
Entity Filer Category	'Large Accelerated Filer	'
Document Type	'10-Q	'
Document Period End Date	30-Sep-14	'
Document Fiscal Year Focus	'2014	'
Document Fiscal Period Focus	'Q3	'
Amendment Flag	'false	'
Entity Common Stock, Shares Outstanding	'	195,735,991

Consolidated_Balance_Sheets_Un

Consolidated Balance Sheets (Unaudited) (USD $)	Sep. 30, 2014	Dec. 31, 2013
In Thousands, unless otherwise specified
Current assets:	'	'
Cash and cash equivalents (HEP: $1,667 and $6,352, respectively)	$856,026	$940,103
Marketable securities	623,480	725,160
Total cash, cash equivalents and short-term marketable securities	1,479,506	1,665,263
Accounts receivable: Product and transportation (HEP: $35,972 and $34,736, respectively)	627,846	665,098
Crude oil resales	62,405	43,704
Accounts receivable, total	690,251	708,802
Inventories: Crude oil and refined products	1,491,318	1,241,448
Materials and supplies (HEP: $1,793 and $1,591, respectively)	88,147	112,799
Inventories, total	1,579,465	1,354,247
Income taxes receivable	32,888	109,376
Prepayments and other (HEP: $2,626 and $2,283, respectively)	111,623	58,756
Total current assets	3,893,733	3,896,444
Properties, plants and equipment, at cost (HEP: $1,252,071 and $1,199,594, respectively)	4,680,470	4,343,857
Less accumulated depreciation (HEP: $(235,848) and $(194,619), respectively)	-1,120,205	-949,261
Property, plants and equipment, net	3,560,265	3,394,596
Other assets: Turnaround costs	217,796	258,436
Goodwill (HEP: $288,991 and $288,991, respectively)	2,331,781	2,331,922
Intangibles and other (HEP: $71,508 and $74,979, respectively)	178,195	175,341
Other assets, total	2,727,772	2,765,699
Total assets	10,181,770	10,056,739
Current liabilities:	'	'
Accounts payable (HEP: $15,084 and $22,898, respectively)	1,441,115	1,325,376
Accrued liabilities (HEP: $25,426 and $28,668, respectively)	122,933	125,115
Deferred income tax liabilities	222,701	223,999
Total current liabilities	1,786,749	1,674,490
Long-term debt (HEP: $851,416 and $807,630, respectively)	1,039,396	997,519
Deferred income taxes (HEP: $5,311 and $5,287, respectively)	659,666	616,842
Other long-term liabilities (HEP: $39,446 and $35,918, respectively)	135,111	158,490
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 September 30, 2014 and December 31, 2013	2,560	2,560
Additional capital	4,011,375	3,990,630
Retained earnings	3,162,173	3,144,480
Accumulated other comprehensive income (loss)	70,011	822
Common stock held in treasury, at cost - 59,764,477 and 57,132,515 shares as of September 30, 2014 and December 31, 2013, respectively	-1,271,962	-1,138,872
Total HollyFrontier stockholders' equity	5,974,157	5,999,620
Noncontrolling interest	586,691	609,778
Total equity	6,560,848	6,609,398
Total liabilities and equity	10,181,770	10,056,739
HEP [Member]	'	'
Current assets:	'	'
Cash and cash equivalents (HEP: $1,667 and $6,352, respectively)	1,667	6,352
Accounts receivable: Product and transportation (HEP: $35,972 and $34,736, respectively)	35,972	34,736
Materials and supplies (HEP: $1,793 and $1,591, respectively)	1,793	1,591
Prepayments and other (HEP: $2,626 and $2,283, respectively)	2,626	2,283
Properties, plants and equipment, at cost (HEP: $1,252,071 and $1,199,594, respectively)	1,252,071	1,199,594
Less accumulated depreciation (HEP: $(235,848) and $(194,619), respectively)	-235,848	-194,619
Goodwill (HEP: $288,991 and $288,991, respectively)	288,991	288,991
Intangibles and other (HEP: $71,508 and $74,979, respectively)	71,508	74,979
Total assets	1,418,780	1,413,908
Current liabilities:	'	'
Accounts payable (HEP: $15,084 and $22,898, respectively)	15,084	22,898
Accrued liabilities (HEP: $25,426 and $28,668, respectively)	25,426	28,668
Long-term debt (HEP: $851,416 and $807,630, respectively)	851,416	807,630
Deferred income taxes (HEP: $5,311 and $5,287, respectively)	5,311	5,287
Other long-term liabilities (HEP: $39,446 and $35,918, respectively)	$39,446	$35,918

Consolidated_Balance_Sheets_Pa

Consolidated Balance Sheets (Parenthetical) (USD $)	Sep. 30, 2014	Dec. 31, 2013
In Thousands, except Share data, unless otherwise specified
Cash and cash equivalents (HEP: $1,667 and $6,352, respectively)	$856,026	$940,103
Accounts receivable Product and transportation	627,846	665,098
Materials and supplies (HEP: $1,793 and $1,591, respectively)	88,147	112,799
Prepayments and other (HEP: $2,626 and $2,283, respectively)	111,623	58,756
Property, Plant and Equipment, Gross	4,680,470	4,343,857
Accumulated Depreciation, Depletion and Amortization, Property, Plant, and Equipment	1,120,205	949,261
Goodwill	2,331,781	2,331,922
Intangibles and other	178,195	175,341
Accounts payable (HEP: $15,084 and $22,898, respectively)	1,441,115	1,325,376
Accrued liabilities (HEP: $25,426 and $28,668, respectively)	122,933	125,115
Long-term debt (HEP: $851,416 and $807,630, respectively)	1,039,396	997,519
Deferred income taxes (HEP: $5,311 and $5,287, respectively)	659,666	616,842
Other long-term liabilities (HEP: $39,446 and $35,918, respectively)	135,111	158,490
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	59,764,477	57,132,515
HEP [Member]	'	'
Cash and cash equivalents (HEP: $1,667 and $6,352, respectively)	1,667	6,352
Accounts receivable Product and transportation	35,972	34,736
Materials and supplies (HEP: $1,793 and $1,591, respectively)	1,793	1,591
Prepayments and other (HEP: $2,626 and $2,283, respectively)	2,626	2,283
Property, Plant and Equipment, Gross	1,252,071	1,199,594
Accumulated Depreciation, Depletion and Amortization, Property, Plant, and Equipment	235,848	194,619
Goodwill	288,991	288,991
Intangibles and other	71,508	74,979
Accounts payable (HEP: $15,084 and $22,898, respectively)	15,084	22,898
Accrued liabilities (HEP: $25,426 and $28,668, respectively)	25,426	28,668
Long-term debt (HEP: $851,416 and $807,630, respectively)	851,416	807,630
Deferred income taxes (HEP: $5,311 and $5,287, respectively)	5,311	5,287
Other long-term liabilities (HEP: $39,446 and $35,918, respectively)	$39,446	$35,918

Consolidated_Statements_Of_Inc

Consolidated Statements Of Income (Unaudited) (USD $)	3 Months Ended		9 Months Ended
In Thousands, except Per Share data, unless otherwise specified	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013
Income Statement [Abstract]	'	'	'	'
Sales and other revenues	$5,317,555	$5,327,122	$15,481,208	$15,333,759
Operating costs and expenses:	'	'	'	'
Cost of products sold (exclusive of depreciation and amortization)	4,625,893	4,809,990	13,439,359	13,059,333
Operating expenses (exclusive of depreciation and amortization)	280,957	256,318	826,577	798,959
General and administrative expenses (exclusive of depreciation and amortization)	27,149	28,937	82,437	92,135
Depreciation and amortization	80,945	82,127	262,883	224,381
Total operating costs and expenses	5,014,944	5,177,372	14,611,256	14,174,808
Income from operations	302,611	149,750	869,952	1,158,951
Other income (expense):	'	'	'	'
Earnings (loss) of equity method investments	-1,247	159	-2,956	-871
Interest income	1,004	1,482	3,593	3,791
Interest expense	-11,038	-13,954	-33,521	-55,068
Loss on early extinguishment of debt	0	0	-7,677	-22,109
Loss on sale of assets	-556	0	-556	0
Other income (expense) total	-11,837	-12,313	-41,117	-74,257
Income before income taxes	290,774	137,437	828,835	1,084,694
Income tax provision:	'	'	'	'
Current	91,867	-10,454	294,331	339,612
Deferred	11,349	58,982	-2,169	47,053
Income tax provision total	103,216	48,528	292,162	386,665
Net income	187,558	88,909	536,673	698,029
Less net income attributable to noncontrolling interest	12,552	6,619	33,177	25,089
Net income attributable to HollyFrontier stockholders	$175,006	$82,290	$503,496	$672,940
Earnings per share attributable to HollyFrontier stockholders:	'	'	'	'
Basic	$0.88	$0.41	$2.54	$3.33
Diluted	$0.88	$0.41	$2.53	$3.33
Cash dividends declared per common share	$0.82	$0.80	$2.44	$2.40
Average number of common shares outstanding:	'	'	'	'
Basic	197,261	199,098	197,895	201,109
Diluted	197,535	199,509	198,096	201,486

Consolidated_Statements_Of_Com

Consolidated Statements Of Comprehensive Income (Unaudited) (USD $)	3 Months Ended		9 Months Ended
In Thousands, unless otherwise specified	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013
Statement of Comprehensive Income [Abstract]	'	'	'	'
Net income	$187,558	$88,909	$536,673	$698,029
Other comprehensive income (loss)	'	'	'	'
Unrealized gain (loss) on marketable securities	-153	44	-116	18
Reclassification adjustments to net income on sale or maturity of marketable securities	-12	-10	-13	-13
Net unrealized gain (loss) on marketable securities	-165	34	-129	5
Change in fair value of cash flow hedging instruments	5,133	25,423	143,857	42,739
Reclassification adjustments to net income on settlement of cash flow hedging instruments	-13,844	-21,478	-31,710	153
Amortization of unrealized loss attributable to discontinued cash flow hedges	270	270	810	1,479
Net unrealized gain (loss) on hedging instruments	-8,441	4,215	112,957	44,371
Pension plan loss reclassified to net income	0	0	0	28,986
Loss on post-retirement healthcare plan	0	0	-89	0
Post-retirement healthcare plan loss reclassified to net income	0	0	0	-1,726
Retirement Restoration Plan Loss Reclassified to Net Income	422	0	422	0
Net change in post-retirement benefit obligation	422	0	333	30,712
Other comprehensive income (loss) before income taxes	-8,184	4,249	113,161	75,088
Income tax expense (benefit)	-3,428	1,946	43,694	28,421
Other comprehensive income (loss)	-4,756	2,303	69,467	46,667
Total comprehensive income	182,802	91,212	606,140	744,696
Less noncontrolling interest in comprehensive income	13,225	5,954	33,455	27,156
Comprehensive income attributable to HollyFrontier stockholders	$169,577	$85,258	$572,685	$717,540

Consolidated_Statements_Of_Cas

Consolidated Statements Of Cash Flows (Unaudited) (USD $)	9 Months Ended
In Thousands, unless otherwise specified	Sep. 30, 2014	Sep. 30, 2013
Cash flows from operating activities:	'	'
Net income	$536,673	$698,029
Adjustments to reconcile net income to net cash provided by operating activities:	'	'
Depreciation and amortization	262,883	224,381
Net loss of equity method investments, inclusive of distributions	5,268	3,184
Loss on early extinguishment of debt attributable to unamortized discount	1,489	7,948
Loss on sale of assets	556	0
Deferred income taxes	-2,169	47,053
Equity based compensation expense	20,728	25,239
Change in fair value - derivative instruments	-12,199	-39,745
(Increase) decrease in current assets:	'	'
Accounts receivable	8,530	-110,402
Inventories	-225,698	-228,541
Income taxes receivable	76,488	670
Prepayments and other	24,719	18,983
Increase (decrease) in current liabilities:	'	'
Accounts payable	109,912	298,916
Accrued liabilities	27,327	-7,888
Turnaround expenditures	-32,236	-170,468
Other, net	3,662	34,804
Net cash provided by operating activities	805,933	802,163
Cash flows from investing activities:	'	'
Additions to properties, plants and equipment	-307,476	-255,090
Proceeds from sale of assets	14,711	5,802
Payments to Acquire Businesses, Net of Cash Acquired	0	11,301
Investment in Sabine Biofuels	-5,000	-3,000
Net repayment from (advances to) Sabine Biofuels	10,021	-11,040
Purchases of marketable securities	-762,224	-672,701
Sales and maturities of marketable securities	863,769	646,301
Net cash used for investing activities	-247,856	-332,128
Cash flows from financing activities:	'	'
Early Repayment of Senior Debt	0	-300,973
Repayments of Senior Debt	-156,188	'
Proceeds from sale of HEP common units	0	73,444
Proceeds from common unit offerings - HEP	0	146,888
Purchase of treasury stock	-133,150	-184,947
Dividends	-485,766	-485,411
Excess tax benefit from equity based compensation	4,482	2,739
Deferred financing costs and other	-3,995	668
Net cash used for financing activities	-642,154	-933,250
Cash and cash equivalents:	'	'
Increase for the period	-84,077	-463,215
Beginning of period	940,103	1,757,699
End of period	856,026	1,294,484
Cash paid during the period for:	'	'
Interest	45,672	67,822
Income taxes	222,488	336,588
HEP [Member]	'	'
Adjustments to reconcile net income to net cash provided by operating activities:	'	'
Depreciation and amortization	45,739	48,410
Cash flows from investing activities:	'	'
Additions to properties, plants and equipment	-61,657	-31,099
Proceeds from sale of assets	0	'
Payments to Acquire Businesses, Net of Cash Acquired	'	11,301
Cash flows from financing activities:	'	'
Borrowings under credit agreement - HEP	538,600	256,500
Repayments under credit agreement - HEP	-346,600	-312,500
Repayments of Senior Debt	-156,188	0
Proceeds from common unit offerings - HEP	'	73,444
Distributions to noncontrolling interest	-58,473	-52,835
Purchase of units for incentive grants - HEP	-1,064	-3,379
Deferred financing costs and other	0	'
Cash and cash equivalents:	'	'
Beginning of period	6,352	'
End of period	$1,667	'

Description_of_Business_and_Pr

Description of Business and Presentation of Financial Statements	9 Months Ended
	Sep. 30, 2014
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 September 30, 2014, 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;
	•	owned a 50% interest in Sabine Biofuels II, LLC (“Sabine Biofuels”), a biodiesel production facility located in Port Arthur, Texas; 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 September 30, 2014, the consolidated results of operations and comprehensive income for the three and nine months ended September 30, 2014 and 2013 and consolidated cash flows for the nine months ended September 30, 2014 and 2013 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, 2013 that has been filed with the SEC.
	Our results of operations for the nine months ended September 30, 2014 are not necessarily indicative of the results of operations to be realized for the year ending December 31, 2014.
	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 $2.4 million at September 30, 2014 and December 31, 2013.
	Inventories: We use the last-in, first-out (“LIFO”) method of valuing inventory. Under the LIFO method, an actual valuation of inventory can only be 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.
	We performed our annual goodwill impairment testing as of July 1, 2014, which entailed an assessment of our reporting unit fair values relative to their respective carrying values that were derived using a combination of both income and market approaches. Our income approach utilizes the discounted future expected cash flows and has an 80% weighting. Our market approach, which includes both the guideline public company and guideline transaction methods each having a 10% weighting, utilizes pricing multiples derived from historical market transactions of other like-kind assets. Our discounted cash flows reflect estimates of future cash flows based on both historical and forward crack-spreads, forecasted production levels, operating costs and capital expenditures. Our goodwill is allocated by reporting unit as follows: El Dorado, $1.7 billion; Cheyenne, $0.3 billion; and HEP, $0.3 billion. Based on our testing as of July 1, 2014, the fair value of our Cheyenne reporting unit exceeded its carrying cost by slightly less than 20%, and the fair value of our El Dorado and HEP reporting units exceeded their respective carrying values by a much larger percentage. As of September 30, 2014, there have been no impairments to goodwill.
	Historically, the refining industry has experienced significant fluctuations in operating results over an extended business cycle including changes in prices of crude oil and refined products, changes in operating costs including natural gas and higher costs of complying with government regulations. It is reasonably possible that at some future downturn in refining operations that the goodwill related to our Cheyenne Refinery will be determined to be impaired.
	During the third quarter of 2014, we recorded an insignificant reduction to goodwill due to the sale of certain business assets.
	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 is effective January 1, 2017, and we are evaluating the impact of this standard.

Variable_Interest_Entities

Variable Interest Entities	9 Months Ended
	Sep. 30, 2014
Variable Interest Entities [Abstract]	'
Variable Interest Entities	'
	Variable Interest Entities
	Holly Energy Partners
	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 September 30, 2014, 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. We are the primary beneficiary of HEP's earnings and cash flows 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 84% of HEP’s total revenues for the nine months ended September 30, 2014. 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 (“PPI”) or Federal Energy Regulatory Commission (“FERC”) index. As of September 30, 2014, these agreements result in minimum annualized payments to HEP of $236.2 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.
	HEP Common Unit Offering
	In March 2013, HEP closed on a public offering of 1,875,000 of its common units. Additionally, our wholly-owned subsidiary, HollyFrontier Holdings LLC, as a selling unitholder, closed on a public sale of 1,875,000 HEP common units held by it. HEP used net proceeds of $73.4 million to repay indebtedness incurred under its credit facility and for general partnership purposes.
	Sabine Biofuels
	We have a 50% ownership interest in Sabine Biofuels, an unconsolidated VIE. This investment, accounted for using the equity method of accounting, had a carrying amount of $8.4 million at September 30, 2014 and is classified as a noncurrent asset under “Intangibles and other” in our consolidated balance sheets.

Financial_Instruments

Financial Instruments	9 Months Ended
	Sep. 30, 2014
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 our investments in marketable securities, derivative instruments and senior notes at September 30, 2014 and December 31, 2013 were as follows:
									Fair Value by Input Level
	Financial Instrument		Carrying Amount			Fair Value			Level 1			Level 2			Level 3
			(In thousands)
	September 30, 2014
	Assets:
	Marketable securities		$	623,480		$	623,480		$	—		$	623,480		$	—
	NYMEX futures contracts		1,848			1,848			1,848			—			—
	Commodity price swaps		132,610			132,610			—			15,389			117,221
	HEP interest rate swaps		1,545			1,545			—			1,545			—
	Total assets		$	759,483		$	759,483		$	1,848		$	640,414		$	117,221
	Liabilities:
	Commodity price swaps		$	59,800		$	59,800		$	—		$	58,489		$	1,311
	HollyFrontier senior notes		154,377			155,250			—			155,250			—
	HEP senior notes		296,416			309,000			—			309,000			—
	HEP interest rate swaps		1,231			1,231			—			1,231			—
	Total liabilities		$	511,824		$	525,281		$	—		$	523,970		$	1,311
									Fair Value by Input Level
	Financial Instrument		Carrying Amount			Fair Value			Level 1			Level 2			Level 3
			(In thousands)
	December 31, 2013
	Assets:
	Marketable securities		$	725,160		$	725,160		$	—		$	725,160		$	—
	Commodity price swaps		43,284			43,284			—			36,312			6,972
	HEP interest rate swaps		1,670			1,670			—			1,670			—
	Total assets		$	770,114		$	770,114		$	—		$	763,142		$	6,972
	Liabilities:
	NYMEX futures contracts		$	3,569		$	3,569		$	3,569		$	—		$	—
	Commodity price swaps		83,349			83,349			—			41,059			42,290
	HollyFrontier senior notes		155,054			161,250			—			161,250			—
	HEP senior notes		444,630			471,750			—			471,750			—
	HEP interest rate swaps		1,814			1,814			—			1,814			—
	Total liabilities		$	688,416		$	721,732		$	3,569		$	675,873		$	42,290
	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 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 have commodity price swap contracts that relate to forecasted sales of diesel and unleaded gasoline and forecasted purchases of WCS and WTS for which quoted forward market prices are not readily available. The forward rate used to value these price swaps is 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 nine months ended September 30, 2014 and 2013:
			Three Months Ended September 30,						Nine Months Ended September 30,
	Level 3 Financial Instruments		2014			2013			2014			2013
			(In thousands)
	Asset (liability) balance at beginning of period		$	(75,637	)	$	37,126		$	(35,318	)	$	(33,658	)
	Change in fair value:
	Recognized in other comprehensive income		178,511			(9,956		)	65,816			(8,542		)
	Recognized in cost of products sold		11,085			(17,194		)	12,970			30,027
	Settlement date fair value of contractual maturities:
	Recognized in sales and other revenues		6,202			10,138			80,476			25,454
	Recognized in cost of products sold		(4,251		)	(8,460		)	(8,034		)	(1,627		)
	Asset balance at end of period		$	115,910		$	11,654		$	115,910		$	11,654
	A hypothetical change of 10% to the estimated future cash flows attributable to our Level 3 commodity price swaps would result in an estimated fair value change of $11.6 million.

Earnings_Per_Share

Earnings Per Share	9 Months Ended
	Sep. 30, 2014
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 September 30,				Nine Months Ended September 30,
		2014		2013		2014		2013
		(In thousands, except per share data)
	Net income attributable to HollyFrontier stockholders	$	175,006	$	82,290	$	503,496	$	672,940
	Participating securities' share in earnings	471		285		1,416		2,447
	Net income attributable to common shares	$	174,535	$	82,005	$	502,080	$	670,493
	Average number of shares of common stock outstanding	197,261		199,098		197,895		201,109
	Effect of dilutive variable restricted shares and performance share units (1)	274		411		201		377
	Average number of shares of common stock outstanding assuming dilution	197,535		199,509		198,096		201,486
	Basic earnings per share	$	0.88	$	0.41	$	2.54	$	3.33
	Diluted earnings per share	$	0.88	$	0.41	$	2.53	$	3.33
	(1) Excludes anti-dilutive restricted and performance share units of:	195		251		214		1

StockBased_Compensation

Stock-Based Compensation	9 Months Ended
	Sep. 30, 2014
Share-based Compensation [Abstract]	'
Stock-Based Compensation	'
	Stock-Based Compensation
	As of September 30, 2014, 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 $6.0 million and $7.3 million for the three months ended September 30, 2014 and 2013, respectively, and $18.2 million and $22.6 million for the nine months ended September 30, 2014 and 2013, 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 $0.8 million and $0.7 million for the three months ended September 30, 2014 and 2013, respectively, and $2.5 million and $2.6 million for the nine months ended September 30, 2014 and 2013, 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 nine months ended September 30, 2014 is presented below:
	Restricted Stock and Restricted Stock Units	Grants		Weighted Average Grant Date Fair Value		Aggregate Intrinsic Value ($000)
	Outstanding at January 1, 2014 (non-vested)	737,562		$	39.54
	Granted	73,395		48.2
	Vesting (transfer/conversion to common stock)	(103,586	)	33.71
	Forfeited	(73,940	)	42.23
	Outstanding at September 30, 2014 (non-vested)	633,431		$	41.18	$	27,668
	For the nine months ended September 30, 2014, 103,586 restricted stock and restricted stock units vested having a grant date fair value of $3.5 million. As of September 30, 2014, there was $9.4 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 1.0 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 both a “financial performance” and “market performance” criteria. Financial performance is based on our financial performance compared to an equally-weighted peer group of independent refining companies, while market performance is based on total shareholder return achieved by HollyFrontier stockholders compared with the average shareholder return achieved by shareholders of peer group companies. The number of shares ultimately issued under these awards can range from zero to 200%. As of September 30, 2014, estimated share payouts for outstanding non-vested performance share unit awards averaged approximately 70% of the initial target award.
	A summary of performance share unit activity and changes during the nine months ended September 30, 2014 is presented below:
	Performance Share Units	Grants
	Outstanding at January 1, 2014 (non-vested)	983,610
	Granted	26,493
	Vesting and transfer of ownership to recipients	(181,290	)
	Forfeited	(109,517	)
	Outstanding at September 30, 2014 (non-vested)	719,296
	For the nine months ended September 30, 2014, we issued 172,231 shares of our common stock, representing a 95% payout on vested performance shares units having a grant date fair value of $5.9 million. Based on the weighted-average grant date fair value of $40.55 per share, there was $13.9 million of total unrecognized compensation cost related to non-vested performance share units as of September 30, 2014. That cost is expected to be recognized over a weighted-average period of 1.2 years.

Cash_and_Cash_Equivalents_and_

Cash and Cash Equivalents and Investments in Marketable Securities	9 Months Ended
	Sep. 30, 2014
Cash And Cash Equivalents And Investments In Marketable Securities [Abstract]	'
Cash And Cash Equivalents And Investments In Marketable Securities	'
	Cash and Cash Equivalents and Investments in Marketable Securities
	Our investment portfolio at September 30, 2014 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)
	September 30, 2014
	Certificates of deposit	$	96,403	$	14	$	(5	)	$	96,412
	Commercial paper	76,331		16		—			76,347
	Corporate debt securities	147,039		10		(50		)	146,999
	State and political subdivisions debt securities	303,824		14		(116		)	303,722
	Total marketable securities	$	623,597	$	54	$	(171	)	$	623,480
	December 31, 2013
	Certificates of deposit	$	74,802	$	21	$	(1	)	$	74,822
	Commercial paper	78,216		28		—			78,244
	Corporate debt securities	96,889		6		(44		)	96,851
	State and political subdivisions debt securities	475,235		49		(41		)	475,243
	Total marketable securities	$	725,142	$	104	$	(86	)	$	725,160
	Interest income recognized on our marketable securities was $0.5 million for both the three months ended September 30, 2014 and 2013, respectively, and $1.7 million and $1.6 million for the nine months ended September 30, 2014 and 2013, respectively.

Inventories

Inventories	9 Months Ended
	Sep. 30, 2014
Inventory, Net [Abstract]	'
Inventories	'
	Inventories
	Inventory consists of the following components:
			September 30,		December 31, 2013
			2014
			(In thousands)
	Crude oil		$	615,245	$	567,281
	Other raw materials and unfinished products(1)		183,395		154,534
	Finished products(2)		692,678		519,633
	Process chemicals(3)		3,858		3,504
	Repair and maintenance supplies and other		84,289		109,295
	Total inventory		$	1,579,465	$	1,354,247
	-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

Environmental	9 Months Ended
	Sep. 30, 2014
Environmental Expense and Liabilities [Abstract]	'
Environmental	'
	Environmental
	We expensed zero and $1.1 million for the three months ended September 30, 2014 and 2013, respectively, and $1.3 million and $1.9 million, for the nine months ended September 30, 2014 and 2013, respectively, for environmental remediation obligations. The accrued environmental liability reflected in our consolidated balance sheets was $81.0 million and $87.8 million at September 30, 2014 and December 31, 2013, respectively, of which $67.5 million and $73.6 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	9 Months Ended
	Sep. 30, 2014
Debt [Abstract]	'
Debt	'
	Debt
	HollyFrontier Credit Agreement
	On July 1, 2014, we entered into a new $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. We contemporaneously terminated our previous $1 billion senior secured revolving credit agreement. The HollyFrontier Credit Agreement 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 September 30, 2014, we were in compliance with all covenants, had no outstanding borrowings and had outstanding letters of credit totaling $4.7 million under the HollyFrontier Credit Agreement.
	HEP Credit Agreement
	HEP has a $650 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 September 30, 2014, HEP was in compliance with all of its covenants, had outstanding borrowings of $555.0 million and no outstanding letters of credit under the HEP Credit Agreement.
	HEP’s obligations under the HEP Credit Agreement are collateralized by substantially all of HEP’s assets (presented parenthetically in our consolidated balance sheets). 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
	Our 6.875% senior notes ($150 million aggregate principal amount maturing November 2018) (the “HollyFrontier Senior Notes”) are unsecured and impose certain restrictive covenants, including limitations on our ability to incur additional debt, incur liens, enter into sale-and-leaseback transactions, pay dividends, enter into mergers, sell assets and enter into certain transactions with affiliates. Additionally, we have certain redemption rights under the HollyFrontier Senior Notes.
	At any time, following notice to the trustee, that the HollyFrontier Senior Notes are rated investment grade by both Moody's and Standard & Poor's and no default or event of default exists, we are not subject to many of the foregoing covenants (a "Covenant Suspension"). As of September 30, 2014, the HollyFrontier Senior Notes were rated investment grade by both Standard & Poor's (BBB-) and Moody's (Baa3). As a result, we are under the Covenant Suspension pursuant to the terms of the indenture governing the HollyFrontier Senior Notes.
	In June 2013, we redeemed our $286.8 million aggregate principal amount of 9.875% senior notes maturing June 2017 at a redemption cost of $301.0 million, at which time we recognized a $22.1 million early extinguishment loss consisting of a $14.2 million debt redemption premium and an unamortized discount of $7.9 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:
		September 30,			December 31,
		2014			2013
		(In thousands)
	6.875% Senior Notes
	Principal	$	150,000		$	150,000
	Unamortized premium	4,377			5,054
		154,377			155,054
	Financing Obligation	33,603			34,835
	Total HollyFrontier long-term debt	187,980			189,889
	HEP Credit Agreement	555,000			363,000
	HEP 6.5% Senior Notes
	Principal	300,000			300,000
	Unamortized discount	(3,584		)	(4,073		)
		296,416			295,927
	HEP 8.25% Senior Notes
	Principal	—			150,000
	Unamortized discount	—			(1,297		)
		—			148,703
	Total HEP long-term debt	851,416			807,630
	Total long-term debt	$	1,039,396		$	997,519
	We capitalized interest attributable to construction projects of $2.9 million and $2.8 million for the three months ended September 30, 2014 and 2013, respectively, and $9.0 million and $9.2 million for the nine months ended September 30, 2014 and 2013, respectively.

Derivative_Instruments_And_Hed

Derivative Instruments And Hedging Activities	9 Months Ended
	Sep. 30, 2014
Derivative Instruments And Hedging Activities [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 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 ultra-low sulfur diesel and conventional unleaded gasoline. We also have forward sales contracts that lock in the prices of future sales 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 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 September 30, 2014
	Commodity price swaps
	Change in fair value	$	4,580			Sales and other revenues		$	(6,202	)		Sales and other revenues		$	1,498
	Gain reclassified to earnings due to settlements	(14,400		)		Cost of products sold		20,776				Cost of products sold		(6,189		)
	Amortization of discontinued hedges reclassified to earnings	270				Operating expenses		(444		)		Operating expenses		(99		)
	Total	$	(9,550	)				$	14,130					$	(4,790	)
	Three Months Ended September 30, 2013
	Commodity price swaps
	Change in fair value	$	27,049			Sales and other revenues		$	(10,138	)		Sales and other revenues		$	1,949
	Gain reclassified to earnings due to settlements	(22,007		)		Cost of products sold		32,874				Cost of products sold		(962		)
	Amortization of discontinued hedges reclassified to earnings	270				Operating expenses		(999		)		Operating expenses		259
	Total	$	5,312					$	21,737					$	1,246
	Nine Months Ended September 30, 2014
	Commodity price swaps
	Change in fair value	$	145,046			Sales and other revenues		$	(80,475	)		Sales and other revenues		$	1,498
	Gain reclassified to earnings due to settlements	(33,357		)		Cost of products sold		111,217				Cost of products sold		(6,189		)
	Amortization of discontinued hedge reclassified to earnings	810				Operating expenses		1,805				Operating expenses		(905		)
	Total	$	112,499					$	32,547					$	(5,596	)
	Nine Months Ended September 30, 2013
	Commodity price swaps
	Change in fair value	$	41,410			Sales and other revenues		$	(25,454	)		Sales and other revenues		$	2,143
	Gain reclassified to earnings due to settlements	(1,396		)		Cost of products sold		28,271				Cost of products sold		730
	Amortization of discontinued hedge reclassified to earnings	630				Operating expenses		(2,051		)		Operating expenses		—
	Total	$	40,644					$	766					$	2,873
	As of September 30, 2014, 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			2014			2015			2016			2017			Unit of Measure
	Natural gas - long		31,200,000			2,400,000			9,600,000			9,600,000			9,600,000			MMBTU
	WTI crude oil - long		11,418,000			7,038,000			4,380,000			—			—			Barrels
	Ultra-low sulfur diesel - short		8,106,000			3,726,000			4,380,000			—			—			Barrels
	Sub octane gasoline - short		3,312,000			3,312,000			—			—			—			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 31,200,000 MMBTU's to be purchased ratably through 2017. As of September 30, 2014, we have an unrealized loss of $3.5 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 natural gas purchases and WTI crude oil, and to lock in the spread between WCS and WTI crude oil and WTS and WTI crude oil on forecasted purchases of WCS and WTS, respectively. 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 September 30,								Nine Months Ended September 30,
	Location of Gain (Loss) Recognized in Income		2014				2013				2014				2013
			(In thousands)
	Cost of products sold		$	27,773			$	(29,515	)		$	3,367			$	5,916
	Operating expenses		3				(157		)		(185		)		(5,458		)
	Total		$	27,776			$	(29,672	)		$	3,182			$	458
	As of September 30, 2014, 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			2014			2015			2016			2017			Unit of Measure
	Commodity price swap (WCS spread) - long	1,610,000			1,610,000			—			—			—			Barrels
	Commodity price swap (WTS spread) - long	1,825,000			—			1,825,000			—			—			Barrels
	Commodity price swap (WTI) - long	365,000			—			365,000			—			—			Barrels
	Commodity price swap (natural gas) - long	31,200,000			2,400,000			9,600,000			9,600,000			9,600,000			MMBTU
	Commodity price swap (natural gas) - short	31,200,000			2,400,000			9,600,000			9,600,000			9,600,000			MMBTU
NYMEX futures (WTI) - short	1,043,000			939,000			104,000			—			—			Barrels
Interest Rate Risk Management
HEP uses interest rate swaps to manage its exposure to interest rate risk.
As of September 30, 2014, 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 September 30, 2014, 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 September 30, 2014, 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 September 30, 2014
Interest rate swaps
Change in fair value	$	553
Loss reclassified to earnings due to settlements	556				Interest expense		$	(556	)
Total	$	1,109					$	(556	)
Three Months Ended September 30, 2013
Interest rate swaps
Change in fair value	$	(1,626	)
Loss reclassified to earnings due to settlements	529				Interest expense		$	(529	)
Total	$	(1,097	)				$	(529	)
Nine Months Ended September 30, 2014
Interest rate swaps
Change in fair value	$	(1,189	)
Loss reclassified to earnings due to settlements	1,647				Interest expense		$	(1,647	)
Total	$	458					$	(1,647	)
Nine Months Ended September 30, 2013
Interest rate swaps
Change in fair value	$	1,329
Loss reclassified to earnings due to settlements	1,549
Amortization of discontinued hedge reclassified to earnings	849				Interest expense		$	(2,398	)
Total	$	3,727					$	(2,398	)
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)
September 30, 2014
Derivatives designated as cash flow hedging instruments:
Commodity price swap contracts		$	104,969			$	(31,480	)		$	73,489			$	12,735			$	(5,456	)	$	7,279
Interest rate swap contracts		1,545				—				1,545				1,231				—			1,231
		$	106,514			$	(31,480	)		$	75,034			$	13,966			$	(5,456	)	$	8,510
Derivatives not designated as cash flow hedging instruments:
Commodity price swap contracts		$	14,325			$	(3,961	)		$	10,364			$	11,624			$	(7,860	)	$	3,764
NYMEX futures contracts		1,848				—				1,848				—				—			—
		$	16,173			$	(3,961	)		$	12,212			$	11,624			$	(7,860	)	$	3,764
Total net balance										$	87,246										$	12,274
Balance sheet classification:		Prepayment and other								$	84,559
		Intangibles and other								2,687				Other long-term liabilities							$	12,274
										$	87,246										$	12,274
		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, 2013
Derivatives designated as cash flow hedging instruments:
Commodity price swap contracts		$	—			$	—			$	—			$	63,561			$	(23,679	)	$	39,882
Interest rate swap contracts		1,670				—				1,670				1,814				—			1,814
		$	1,670			$	—			$	1,670			$	65,375			$	(23,679	)	$	41,696
Derivatives not designated as cash flow hedging instruments:
Commodity price swap contracts		$	6,972			$	—			$	6,972			$	19,766			$	(12,611	)	$	7,155
NYMEX futures contracts		—				—				—				3,569				—			3,569
		$	6,972			$	—			$	6,972			$	23,335			$	(12,611	)	$	10,724
Total net balance										$	8,642										$	52,420
Balance sheet classification:		Prepayment and other								$	6,972			Accrued liabilities							$	26,843
		Intangibles and other								1,670				Other long-term liabilities							25,577
										$	8,642										$	52,420
At September 30, 2014, we had a pre-tax net unrealized gain of $68.4 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 $76.7 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	9 Months Ended
	Sep. 30, 2014
Stockholders' Equity Note [Abstract]	'
Equity	'
	Equity
	Changes to equity during the nine months ended September 30, 2014 are presented below:
			HollyFrontier			Noncontrolling			Total
			Stockholders’			Interest			Equity
			Equity
			(In thousands)
	Balance at December 31, 2013		$	5,999,620		$	609,778		$	6,609,398
	Net income		503,496			33,177			536,673
	Dividends		(485,803		)	—			(485,803		)
	Distributions to noncontrolling interest holders		—			(58,473		)	(58,473		)
	Other comprehensive income, net of tax		69,189			278			69,467
	Equity-based compensation		18,235			2,493			20,728
	Excess tax benefit attributable to equity-based compensation		4,482			—			4,482
	Purchase of treasury stock (1)		(135,062		)	—			(135,062		)
	Purchase of HEP units for restricted grants		—			(1,064		)	(1,064		)
	Other		—			502			502
	Balance at September 30, 2014		$	5,974,157		$	586,691		$	6,560,848
	-1	Includes 92,048 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 September 2014, our Board of Directors approved a $500 million share repurchase program, which replaced the existing stock repurchase program, 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, corporate, regulatory and other relevant considerations. This program may be discontinued at any time by the Board of Directors. As of September 30, 2014, we had remaining authorization to repurchase up to $467.8 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.

Other_Comprehensive_Income_Los

Other Comprehensive Income (Loss)	9 Months Ended
	Sep. 30, 2014
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			After-Tax
					(Benefit)
		(In thousands)
	Three Months Ended September 30, 2014
	Net unrealized loss on marketable securities	$	(165	)	$	(64	)	$	(101	)
	Net unrealized loss on hedging instruments	(8,441		)	(3,527		)	(4,914		)
	Net change in post-retirement benefit obligations	422			163			259
	Other comprehensive loss	(8,184		)	(3,428		)	(4,756		)
	Less other comprehensive income attributable to noncontrolling interest	673			—			673
	Other comprehensive loss attributable to HollyFrontier stockholders	$	(8,857	)	$	(3,428	)	$	(5,429	)
	Three Months Ended September 30, 2013
	Net unrealized gain on marketable securities	$	34		$	13		$	21
	Net unrealized gain on hedging instruments	4,215			1,933			2,282
	Other comprehensive income	4,249			1,946			2,303
	Less other comprehensive loss attributable to noncontrolling interest	(665		)	—			(665		)
	Other comprehensive income attributable to HollyFrontier stockholders	$	4,914		$	1,946		$	2,968
	Nine Months Ended September 30, 2014
	Net unrealized loss on marketable securities	$	(129	)	$	(50	)	$	(79	)
	Net unrealized gain on hedging instruments	112,957			43,616			69,341
	Net change in post-retirement benefit obligations	333			128			205
	Other comprehensive income	113,161			43,694			69,467
	Less other comprehensive income attributable to noncontrolling interest	278			—			278
	Other comprehensive income attributable to HollyFrontier stockholders	$	112,883		$	43,694		$	69,189
	Nine Months Ended September 30, 2013
	Net unrealized gain on marketable securities	$	5		$	2		$	3
	Net unrealized gain on hedging instruments	44,371			16,473			27,898
	Net change in pension and other post-retirement benefit obligations	30,712			11,946			18,766
	Other comprehensive income	75,088			28,421			46,667
	Less other comprehensive income attributable to noncontrolling interest	2,068			—			2,068
	Other comprehensive income attributable to HollyFrontier stockholders	$	73,020		$	28,421		$	44,599
	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 September 30,
		2014			2013
	Marketable securities	$	12		$	10		Interest income
		5			4			Income tax expense
		7			6			Net of tax
	Hedging instruments:
	Commodity price swaps	(6,202		)	(10,138		)	Sales and other revenues
		20,776			32,874			Cost of products sold
		(444		)	(999		)	Operating expenses
	Interest rate swaps	(556		)	(529		)	Interest expense
		13,574			21,208
		5,384			8,375			Income tax expense
		8,190			12,833			Net of tax
		337			321			Noncontrolling interest
		8,527			13,154			Net of tax and noncontrolling interest
	Retirement restoration plan	(422		)	—			General and administrative expenses
		(163		)	—			Income tax benefit
		(259		)	—			Net of tax
	Total reclassifications for the period	$	8,275		$	13,160
		Nine Months Ended September 30,
		2014			2013
	Marketable securities	$	13		$	13		Interest income
		5			5			Income tax expense
		8			8			Net of tax
	Hedging instruments:
	Commodity price swaps	(80,475		)	(25,454		)	Sales and other revenues
		111,217			28,271			Cost of products sold
		1,805			(2,051		)	Operating expenses
Interest rate swaps	(1,647		)	(2,398		)	Interest expense
	30,900			(1,632		)
	12,345			(69		)	Income tax expense (benefit)
	18,555			(1,563		)	Net of tax
	998			1,453			Noncontrolling interest
	19,553			(110		)	Net of tax and noncontrolling interest
Pension and other post-retirement benefit obligations:
Pension obligation	—			(2,460		)	Cost of products sold
	—			(23,260		)	Operating expenses
	—			(3,266		)	General and administrative expenses
	—			(28,986		)
	—			(11,275		)	Income tax benefit
	—			(17,711		)	Net of tax
Post-retirement healthcare obligation	—			(84		)	Cost of products sold
	—			(1,549		)	Operating expenses
	—			(93		)	General and administrative expenses
	—			(1,726		)
	—			(671		)	Income tax benefit
	—			(1,055		)	Net of tax
Retirement restoration plan	(422		)	—			General and administrative expenses
	(163		)	—			Income tax benefit
	(259		)	—			Net of tax
Total reclassifications for the period	$	19,302		$	(18,868	)
Accumulated other comprehensive income in the equity section of our consolidated balance sheets includes:
	September 30,			December 31,
	2014			2013
	(In thousands)
Unrealized gain on post-retirement benefit obligations	$	27,896		$	27,691
Unrealized gain (loss) on marketable securities	(69		)	10
Unrealized gain (loss) on hedging instruments, net of noncontrolling interest	42,184			(26,879		)
Accumulated other comprehensive income	$	70,011		$	822

Postretirement_Plan

Post-retirement Plan	9 Months Ended
	Sep. 30, 2014
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 September 30,						Nine Months Ended September 30,
		2014			2013			2014			2013
		(In thousands)
	Service cost – benefit earned during the period	$	224		$	278		$	672		$	834
	Interest cost on projected benefit obligations	159			159			478			477
	Amortization of prior service credit	(1,074		)	(1,474		)	(3,222		)	(4,422		)
	Amortization of net loss	—			31			—			93
	Loss on settlement	—			—			—			1,726
	Net periodic post-retirement credit	$	(691	)	$	(1,006	)	$	(2,072	)	$	(1,292	)
	In 2012, our Compensation Committee, pursuant to authority delegated to it by the Board of Directors, approved the termination of the HollyFrontier Corporation Pension Plan (the “Plan”), a non-contributory defined benefit retirement plan that covered certain employees and was fully frozen effective May 1, 2012. In the second quarter of 2013, the Plan was liquidated and we recognized a pre-tax pension settlement charge of $30.9 million, of which $29.0 million was reclassified out of accumulated other comprehensive income, representing the irrevocable portion of our obligation.
	Additionally, we have a program that provides certain transition benefit payments to certain employees that participated in the defined benefit plan that was terminated. The program extends through 2014 and provides payments after year-end provided the employee is 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 $2.6 million and $2.7 million for the three months ended September 30, 2014 and 2013, respectively, and $8.1 million and $8.5 million for the nine months ended September 30, 2014 and 2013, respectively.

Contingencies

Contingencies	9 Months Ended
	Sep. 30, 2014
Contingencies [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.

Segment_Information

Segment Information	9 Months Ended
	Sep. 30, 2014
Segment Information [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, a consolidated VIE, 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, 2013.
		Refining		HEP		Corporate			Consolidations			Consolidated
						and Other			and Eliminations			Total
		(In thousands)
	Three Months Ended September 30, 2014
	Sales and other revenues	$	5,303,053	$	82,141	$	181		$	(67,820	)	$	5,317,555
	Depreciation and amortization	$	63,109	$	15,078	$	2,965		$	(207	)	$	80,945
	Income (loss) from operations	$	292,132	$	39,341	$	(28,313	)	$	(549	)	$	302,611
	Capital expenditures	$	98,115	$	22,875	$	3,374		$	—		$	124,364
	Three Months Ended September 30, 2013
	Sales and other revenues	$	5,314,954	$	77,625	$	257		$	(65,714	)	$	5,327,122
	Depreciation and amortization	$	61,553	$	19,042	$	1,739		$	(207	)	$	82,127
	Income (loss) from operations	$	144,508	$	34,481	$	(28,701	)	$	(538	)	$	149,750
	Capital expenditures	$	92,918	$	14,238	$	8,230		$	—		$	115,386
	Nine Months Ended September 30, 2014
	Sales and other revenues	$	15,440,047	$	244,177	$	1,802		$	(204,818	)	$	15,481,208
	Depreciation and amortization	$	210,490	$	45,739	$	7,275		$	(621	)	$	262,883
	Income (loss) from operations	$	835,555	$	117,670	$	(81,670	)	$	(1,603	)	$	869,952
	Capital expenditures	$	290,392	$	61,657	$	17,084		$	—		$	369,133
	Nine Months Ended September 30, 2013
	Sales and other revenues	$	15,294,261	$	229,230	$	1,054		$	(190,786	)	$	15,333,759
	Depreciation and amortization	$	172,166	$	48,410	$	4,426		$	(621	)	$	224,381
	Income (loss) from operations	$	1,145,487	$	102,347	$	(87,319	)	$	(1,564	)	$	1,158,951
	Capital expenditures	$	231,416	$	31,099	$	23,674		$	—		$	286,189
		Refining		HEP		Corporate and Other			Consolidations and Eliminations			Consolidated Total
		(In thousands)
	September 30, 2014
	Cash, cash equivalents and total investments in marketable securities	$	3,501	$	1,667	$	1,474,338		$	—		$	1,479,506
	Total assets	$	7,476,849	$	1,418,780	$	1,593,308		$	(307,167	)	$	10,181,770
	Long-term debt	$	—	$	851,416	$	187,980		$	—		$	1,039,396
	December 31, 2013
	Cash, cash equivalents and total investments in marketable securities	$	1,860	$	6,352	$	1,657,051		$	—		$	1,665,263
	Total assets	$	7,094,558	$	1,413,908	$	1,881,119		$	(332,846	)	$	10,056,739
	Long-term debt	$	—	$	807,630	$	189,889		$	—		$	997,519
	HEP segment revenues from external customers were $14.7 million and $12.2 million for the three months ended September 30, 2014 and 2013, respectively, and $40.4 million and $37.1 million for the nine months ended September 30, 2014 and 2013, respectively.

Supplemental_GuarantorNonGuara

Supplemental Guarantor/Non-Guarantor Financial Information	9 Months Ended
	Sep. 30, 2014
Supplemental Guarantor / Non-Guarantor Financial Information [Abstract]	'
Supplemental Guarantor/Non-Guarantor Financial Information	'
	Supplemental Guarantor/Non-Guarantor Financial Information
	Our obligations under the HollyFrontier Senior Notes have been jointly and severally guaranteed by the substantial majority of our existing and future restricted subsidiaries (“Guarantor Restricted Subsidiaries”). These guarantees are full and unconditional. HEP, in which we have a 39% ownership interest at September 30, 2014, 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.”
	We have made certain revisions to our prior year condensed statements of cash flows to reclassify intercompany lending and distribution activity between operating, investing and financing activities.
	Condensed Consolidating Balance Sheet
	September 30, 2014	Parent			Guarantor			Non-			Eliminations			HollyFrontier			Non-Guarantor			Consolidations and Eliminations			Consolidated
					Restricted			Guarantor						Corp. Before			Non-Restricted
					Subsidiaries			Restricted						Consolidation			Subsidiaries
								Subsidiaries						of HEP			(HEP Segment)
		(In thousands)
	ASSETS
	Current assets:
	Cash and cash equivalents	$	850,727		$	3,474		$	158		$	—		$	854,359		$	1,667		$	—		$	856,026
	Marketable securities	623,480			—			—			—			623,480			—			—			623,480
	Accounts receivable, net	9,752			675,673			3,358			—			688,783			35,972			(34,504		)	690,251
	Intercompany accounts receivable	—			788,868			379,045			(1,167,913		)	—			—			—			—
	Inventories	—			1,577,672			—			—			1,577,672			1,793			—			1,579,465
	Income taxes receivable	32,888			—			—			—			32,888			—			—			32,888
	Prepayments and other	9,920			107,367			—			—			117,287			2,626			(8,290		)	111,623
	Total current assets	1,526,767			3,153,054			382,561			(1,167,913		)	3,894,469			42,058			(42,794		)	3,893,733
	Properties, plants and equip, net	32,525			2,774,100			855			—			2,807,480			1,016,223			(263,438		)	3,560,265
	Investment in subsidiaries	6,707,737			270,685			—			(6,978,422		)	—			—			—			—
	Intangibles and other assets	23,823			2,344,385			25,000			(25,000		)	2,368,208			360,499			(935		)	2,727,772
	Total assets	$	8,290,852		$	8,542,224		$	408,416		$	(8,171,335	)	$	9,070,157		$	1,418,780		$	(307,167	)	$	10,181,770
	LIABILITIES AND EQUITY
	Current liabilities:
	Accounts payable	$	15,748		$	1,444,787		$	—		$	—		$	1,460,535		$	15,084		$	(34,504	)	$	1,441,115
	Intercompany accounts payable	1,167,913			—			—			(1,167,913		)	—			—			—			—
	Accrued liabilities	51,334			53,302			1,161			—			105,797			25,426			(8,290		)	122,933
	Deferred income tax liabilities	222,701			—			—			—			222,701			—			—			222,701
	Total current liabilities	1,457,696			1,498,089			1,161			(1,167,913		)	1,789,033			40,510			(42,794		)	1,786,749
	Long-term debt	179,377			33,603			—			(25,000		)	187,980			851,416			—			1,039,396
	Liability to HEP	—			236,305			—			—			236,305			—			(236,305		)	—
	Deferred income tax liabilities	654,355			—			—			—			654,355			5,311			—			659,666
	Other long-term liabilities	31,253			66,490			—			—			97,743			39,446			(2,078		)	135,111
	Investment in HEP	—			—			136,570			—			136,570			—			(136,570		)	—
	Equity – HollyFrontier	5,968,171			6,707,737			270,685			(6,978,422		)	5,968,171			386,255			(380,269		)	5,974,157
	Equity – noncontrolling interest	—			—			—			—			—			95,842			490,849			586,691
	Total liabilities and equity	$	8,290,852		$	8,542,224		$	408,416		$	(8,171,335	)	$	9,070,157		$	1,418,780		$	(307,167	)	$	10,181,770
	Condensed Consolidating Balance Sheet
	December 31, 2013	Parent			Guarantor			Non-			Eliminations			HollyFrontier			Non-Guarantor			Consolidations and Eliminations			Consolidated
					Restricted			Guarantor						Corp. Before			Non-Restricted
					Subsidiaries			Restricted						Consolidation			Subsidiaries
								Subsidiaries						of HEP			(HEP Segment)
		(In thousands)
	ASSETS
	Current assets:
	Cash and cash equivalents	$	931,920		$	1,817		$	14		$	—		$	933,751		$	6,352		$	—		$	940,103
	Marketable securities	725,160			—			—			—			725,160			—			—			725,160
	Accounts receivable, net	6,095			698,109			8,075			—			712,279			34,736			(38,213		)	708,802
	Intercompany accounts receivable	—			149,907			313,623			(463,530		)	—			—			—			—
	Inventories	—			1,352,656			—			—			1,352,656			1,591			—			1,354,247
	Income taxes receivable	109,376			—			—			—			109,376			—			—			109,376
	Prepayments and other	21,843			45,413			—			—			67,256			2,283			(10,783		)	58,756
	Total current assets	1,794,394			2,247,902			321,712			(463,530		)	3,900,478			44,962			(48,996		)	3,896,444
	Properties, plants and equip, net	30,007			2,633,739			24			—			2,663,770			1,004,975			(274,149		)	3,394,596
	Investment in subsidiaries	5,722,025			216,687			—			(5,938,712		)	—			—			—			—
	Intangibles and other assets	23,034			2,380,268			25,000			(25,000		)	2,403,302			363,970			(1,573		)	2,765,699
	Total assets	$	7,569,460		$	7,478,596		$	346,736		$	(6,427,242	)	$	8,967,550		$	1,413,907		$	(324,718	)	$	10,056,739
	LIABILITIES AND EQUITY
	Current liabilities:
	Accounts payable	$	16,704		$	1,323,603		$	383		$	—		$	1,340,690		$	22,898		$	(38,212	)	$	1,325,376
	Intercompany accounts payable	463,530			—			—			(463,530		)	—			—			—			—
Accrued liabilities	43,254			63,181			795			—			107,230			28,668			(10,783		)	125,115
Deferred income tax liabilities	223,999			—			—			—			223,999			—			—			223,999
Total current liabilities	747,487			1,386,784			1,178			(463,530		)	1,671,919			51,566			(48,995		)	1,674,490
Long-term debt	180,054			34,835			—			(25,000		)	189,889			807,630			—			997,519
Liability to HEP	—			245,536			—			—			245,536			—			(245,536		)	—
Deferred income tax liabilities	611,555			—			—			—			611,555			5,287			—			616,842
Other long-term liabilities	35,874			89,416			—			—			125,290			35,918			(2,718		)	158,490
Investment in HEP	—			—			128,871			—			128,871			—			(128,871		)	—
Equity – HollyFrontier	5,994,490			5,722,025			216,687			(5,938,712		)	5,994,490			416,018			(410,888		)	5,999,620
Equity – noncontrolling interest	—			—			—			—			—			97,488			512,290			609,778
Total liabilities and equity	$	7,569,460		$	7,478,596		$	346,736		$	(6,427,242	)	$	8,967,550		$	1,413,907		$	(324,718	)	$	10,056,739
Condensed Consolidating Statement of Income and Comprehensive Income
Three Months Ended September 30, 2014	Parent			Guarantor			Non-			Eliminations			HollyFrontier			Non-Guarantor			Consolidations and Eliminations			Consolidated
				Restricted			Guarantor						Corp. Before			Non-Restricted
				Subsidiaries			Restricted						Consolidation			Subsidiaries
							Subsidiaries						of HEP			(HEP Segment)
	(In thousands)
Sales and other revenues	$	103		$	5,303,131		$	—		$	—		$	5,303,234		$	82,141		$	(67,820	)	$	5,317,555
Operating costs and expenses:
Cost of products sold	—			4,692,587			—			—			4,692,587			—			(66,694		)	4,625,893
Operating expenses	—			255,871			—			—			255,871			25,456			(370		)	280,957
General and administrative	24,904			530			36			(587		)	24,883			2,266			—			27,149
Depreciation and amortization	2,055			66,832			—			587			69,474			15,078			(3,607		)	80,945
Total operating costs and expenses	26,959			5,015,820			36			—			5,042,815			42,800			(70,671		)	5,014,944
Income (loss) from operations	(26,856		)	287,311			(36		)	—			260,419			39,341			2,851			302,611
Other income (expense):
Earnings (loss) of equity method investments	305,736			17,021			19,040			(324,884		)	16,913			880			(19,040		)	(1,247		)
Interest income (expense)	(1,227		)	1,962			144			—			879			(8,585		)	(2,328		)	(10,034		)
Loss on sale of assets	—			(556		)	—			—			(556		)	—			—			(556		)
	304,509			18,427			19,184			(324,884		)	17,236			(7,705		)	(21,368		)	(11,837		)
Income before income taxes	277,653			305,738			19,148			(324,884		)	277,655			31,636			(18,517		)	290,774
Income tax provision	103,174			—			—			—			103,174			42			—			103,216
Net income	174,479			305,738			19,148			(324,884		)	174,481			31,594			(18,517		)	187,558
Less net income attributable to noncontrolling interest	—			—			—			—			—			1,509			11,043			12,552
Net income attributable to HollyFrontier stockholders	$	174,479		$	305,738		$	19,148		$	(324,884	)	$	174,481		$	30,085		$	(29,560	)	$	175,006
Comprehensive income attributable to HollyFrontier stockholders	$	169,050		$	296,622		$	19,584		$	(316,206	)	$	169,050		$	30,520		$	(29,993	)	$	169,577
Condensed Consolidating Statement of Income and Comprehensive Income
Three Months Ended September 30, 2013	Parent			Guarantor			Non-			Eliminations			HollyFrontier			Non-Guarantor			Consolidations and Eliminations			Consolidated
				Restricted			Guarantor						Corp. Before			Non-Restricted
				Subsidiaries			Restricted						Consolidation			Subsidiaries
							Subsidiaries						of HEP			(HEP Segment)
	(In thousands)
Sales and other revenues	$	146		$	5,315,037		$	28		$	—		$	5,315,211		$	77,625		$	(65,714	)	$	5,327,122
Operating costs and expenses:
Cost of products sold	—			4,874,603			—			—			4,874,603			—			(64,613		)	4,809,990
Operating expenses	—			234,987			—			—			234,987			21,687			(356		)	256,318
General and administrative	25,995			422			105			—			26,522			2,415			—			28,937
Depreciation and amortization	1,496			65,195			—			—			66,691			19,042			(3,606		)	82,127
Total operating costs and expenses	27,491			5,175,207			105			—			5,202,803			43,144			(68,575		)	5,177,372
Income (loss) from operations	(27,345		)	139,830			(77		)	—			112,408			34,481			2,861			149,750
Other income (expense):
Earnings of equity method investments	158,437			16,207			16,822			(175,320		)	16,146			835			(16,822		)	159
Interest income (expense)	(782		)	2,400			138			—			1,756			(11,812		)	(2,416		)	(12,472		)
	157,655			18,607			16,960			(175,320		)	17,902			(10,977		)	(19,238		)	(12,313		)
Income before income taxes	130,310			158,437			16,883			(175,320		)	130,310			23,504			(16,377		)	137,437
Income tax provision	48,488			—			—			—			48,488			40			—			48,528
Net income	81,822			158,437			16,883			(175,320		)	81,822			23,464			(16,377		)	88,909
Less net income attributable to noncontrolling interest	—			—			—			—			—			1,172			5,447			6,619
Net income attributable to HollyFrontier stockholders	$	81,822		$	158,437		$	16,883		$	(175,320	)	$	81,822		$	22,292		$	(21,824	)	$	82,290
Comprehensive income attributable to HollyFrontier stockholders	$	84,790		$	163,317		$	16,450		$	(179,767	)	$	84,790		$	21,859		$	(21,391	)	$	85,258
Condensed Consolidating Statement of Income and Comprehensive Income
Nine Months Ended September 30, 2014	Parent			Guarantor			Non-			Eliminations			HollyFrontier			Non-Guarantor			Consolidations and Eliminations			Consolidated
				Restricted			Guarantor						Corp. Before			Non-Restricted
				Subsidiaries			Restricted						Consolidation			Subsidiaries
							Subsidiaries						of HEP			(HEP Segment)
	(In thousands)
Sales and other revenues	$	383		$	15,440,531		$	935		$	—		$	15,441,849		$	244,177		$	(204,818	)	$	15,481,208
Operating costs and expenses:
Cost of products sold	—			13,640,897			—			—			13,640,897			—			(201,538		)	13,439,359
Operating expenses	—			754,798			—			—			754,798			72,835			(1,056		)	826,577
General and administrative	70,354			4,038			112			—			74,504			7,933			—			82,437
Depreciation and amortization	5,855			221,999			—			—			227,854			45,739			(10,710		)	262,883
Total operating costs and expenses	76,209			14,621,732			112			—			14,698,053			126,507			(213,304		)	14,611,256
Income (loss) from operations	(75,826		)	818,799			823			—			743,796			117,670			8,486			869,952
Other income (expense):
Earnings (loss) of equity method investments	871,883			47,589			51,455			(924,578		)	46,349			2,150			(51,455		)	(2,956		)
Interest income (expense)	(2,024		)	6,051			417			—			4,444			(27,365		)	(7,007		)	(29,928		)
Loss on early extinguishment of debt	—			—			—			—			—			(7,677		)	—			(7,677		)
Loss on sale of assets	—			(556		)	—			—			(556		)	—			—			(556		)
	869,859			53,084			51,872			(924,578		)	50,237			(32,892		)	(58,462		)	(41,117		)
Income before income taxes	794,033			871,883			52,695			(924,578		)	794,033			84,778			(49,976		)	828,835
Income tax provision	292,017			—			—			—			292,017			145			—			292,162
Net income	502,016			871,883			52,695			(924,578		)	502,016			84,633			(49,976		)	536,673
Less net income attributable to noncontrolling interest	—			—			—			—			—			6,562			26,615			33,177
Net income attributable to HollyFrontier stockholders	$	502,016		$	871,883		$	52,695		$	(924,578	)	$	502,016		$	78,071		$	(76,591	)	$	503,496
Comprehensive income attributable to HollyFrontier stockholders	$	571,205		$	984,562		$	52,875		$	(1,037,437	)	$	571,205		$	78,250		$	(76,770	)	$	572,685
Condensed Consolidating Statement of Income and Comprehensive Income
Nine Months Ended September 30, 2013	Parent			Guarantor			Non-			Eliminations			HollyFrontier			Non-Guarantor			Consolidations and Eliminations			Consolidated
				Restricted			Guarantor						Corp. Before			Non-Restricted
				Subsidiaries			Restricted						Consolidation			Subsidiaries
							Subsidiaries						of HEP			(HEP Segment)
	(In thousands)
Sales and other revenues	$	777		$	15,294,447		$	91		$	—		$	15,295,315		$	229,230		$	(190,786	)	$	15,333,759
Operating costs and expenses:
Cost of products sold	—			13,246,883			—			—			13,246,883			—			(187,550		)	13,059,333
Operating expenses	—			730,284			—			—			730,284			69,726			(1,051		)	798,959
General and administrative	80,368			2,827			193			—			83,388			8,747			—			92,135
Depreciation and amortization	3,822			182,858			—			—			186,680			48,410			(10,709		)	224,381
Total operating costs and expenses	84,190			14,162,852			193			—			14,247,235			126,883			(199,310		)	14,174,808
Income (loss) from operations	(83,413		)	1,131,595			(102		)	—			1,048,080			102,347			8,524			1,158,951
Other income (expense):
Earnings (loss) of equity method investments	1,178,587			40,413			43,215			(1,222,109		)	40,106			2,238			(43,215		)	(871		)
Interest income (expense)	(15,459		)	6,579			409			—			(8,471		)	(35,818		)	(6,988		)	(51,277		)
Loss on early extinguishment of debt	(22,109		)	—			—			—			(22,109		)	—			—			(22,109		)
	1,141,019			46,992			43,624			(1,222,109		)	9,526			(33,580		)	(50,203		)	(74,257		)
Income before income taxes	1,057,606			1,178,587			43,522			(1,222,109		)	1,057,606			68,767			(41,679		)	1,084,694
Income tax provision	386,225			—			—			—			386,225			440			—			386,665
Net income	671,381			1,178,587			43,522			(1,222,109		)	671,381			68,327			(41,679		)	698,029
Less net income attributable to noncontrolling interest	—			—			—			—			—			5,192			19,897			25,089
Net income attributable to HollyFrontier stockholders	$	671,381		$	1,178,587		$	43,522		$	(1,222,109	)	$	671,381		$	63,135		$	(61,576	)	$	672,940
Comprehensive income attributable to HollyFrontier stockholders	$	715,981		$	1,220,890		$	45,181		$	(1,266,071	)	$	715,981		$	64,794		$	(63,235	)	$	717,540
Condensed Consolidating Statement of Cash Flows
Nine Months Ended September 30, 2014	Parent			Guarantor			Non-			Eliminations			HollyFrontier			Non-Guarantor			Consolidations and Eliminations			Consolidated
				Restricted			Guarantor						Corp. Before			Non-Restricted
				Subsidiaries			Restricted						Consolidation			Subsidiaries
							Subsidiaries						of HEP			(HEP Segment)
	(In thousands)
Cash flows from operating activities	$	(260,533	)	$	930,722		$	55,047		$	—		$	725,236		$	140,154		$	(59,457	)	$	805,933
Cash flows from investing activities
Additions to properties, plants and equipment	(8,373		)	(298,272		)	(831		)	—			(307,476		)	—			—			(307,476		)
Additions to properties, plants and equipment – HEP	—			—			—			—			—			(61,657		)	—			(61,657		)
Proceeds from sale of assets	—			14,711			—			—			14,711			—			—			14,711
Investment in Sabine Biofuels	—			(5,000		)	—			—			(5,000		)	—			—			(5,000		)
Repayments from Sabine Biofuels	—			10,021			—			—			10,021			—			—			10,021
Purchases of marketable securities	(762,224		)	—			—			—			(762,224		)	—			—			(762,224		)
Sales and maturities of marketable securities	863,769			—			—			—			863,769			—			—			863,769
Net advances to Parent	—			(649,294		)	(54,565		)	703,859			—			—			—			—
	93,172			(927,834		)	(55,396		)	703,859			(186,199		)	(61,657		)	—			(247,856		)
Cash flows from financing activities
Net borrowings under credit agreement – HEP	—			—			—			—			—			192,000			—			192,000
Redemption of senior notes - HEP	—			—			—			—			—			(156,188		)	—			(156,188		)
Purchase of treasury stock	(133,150		)	—			—			—			(133,150		)	—			—			(133,150		)
Dividends	(485,766		)	—			—			—			(485,766		)	—			—			(485,766		)
Distributions to noncontrolling interest	—			—			—			—			—			(117,930		)	59,457			(58,473		)
Excess tax benefit from equity-based compensation	4,482			—			—			—			4,482			—			—			4,482
Purchase of units for incentive grants - HEP	—			—			—			—			—			(1,064		)	—			(1,064		)
Deferred financing costs and other	(3,257		)	(1,231		)	493			—			(3,995		)	—			—			(3,995		)
Net advances from subsidiaries	703,859			—			—			(703,859		)	—			—			—			—
	86,168			(1,231		)	493			(703,859		)	(618,429		)	(83,182		)	59,457			(642,154		)
Cash and cash equivalents
Increase (decrease) for the period	(81,193		)	1,657			144			—			(79,392		)	(4,685		)	—			(84,077		)
Beginning of period	931,920			1,817			14			—			933,751			6,352			—			940,103
End of period	$	850,727		$	3,474		$	158		$	—		$	854,359		$	1,667		$	—		$	856,026
Condensed Consolidating Statement of Cash Flows
Nine Months Ended September 30, 2013	Parent			Guarantor			Non-			Eliminations			HollyFrontier			Non-Guarantor			Consolidations and Eliminations			Consolidated
				Restricted			Guarantor						Corp. Before			Non-Restricted
				Subsidiaries			Restricted						Consolidation			Subsidiaries
							Subsidiaries						of HEP			(HEP Segment)
	(In thousands)
Cash flows from operating activities	$	(377,762	)	$	1,066,429		$	41,380		$	—		$	730,047		$	124,922		$	(52,806	)	$	802,163
Cash flows from investing activities:
Additions to properties, plants and equipment	(8,056		)	(247,034		)	—			—			(255,090		)	—			—			(255,090		)
Additions to properties, plants and equipment – HEP	—			—			—			—			—			(31,099		)	—			(31,099		)
Acquisition of trucking operations	—			(11,301		)	—			—			(11,301		)	—			—			(11,301		)
Proceeds from sale of assets	—			3,321			—			—			3,321			2,481			—			5,802
Investment in Sabine Biofuels	—			(3,000		)	—			—			(3,000		)	—			—			(3,000		)
Net advances to Sabine biofuels	—			(11,040		)	—			—			(11,040		)	—			—			(11,040		)
Purchases of marketable securities	(672,701		)	—			—			—			(672,701		)	—			—			(672,701		)
Sales and maturities of marketable securities	646,301			—			—			—			646,301			—			—			646,301
Net advances to Parent	—			(801,939		)	(39,882		)	841,821			—			—			—			—
	(34,456		)	(1,070,993		)	(39,882		)	841,821			(303,510		)	(28,618		)	—			(332,128		)
Cash flows from financing activities:
Net repayments under credit agreement – HEP	—			—			—			—			—			(56,000		)	—			(56,000		)
Redemption of senior notes	(300,973		)	—			—			—			(300,973		)	—			—			(300,973		)
Proceeds from common unit offerings - HEP	73,444			—			—			—			73,444			73,444			—			146,888
Purchase of treasury stock	(184,947		)	—			—			—			(184,947		)	—			—			(184,947		)
Contribution from general partner	—			—			(1,499		)	—			(1,499		)	1,499			—			—
Dividends	(485,411		)	—			—			—			(485,411		)	—			—			(485,411		)
Distributions to noncontrolling interest	—			—			—			—			—			(105,641		)	52,806			(52,835		)
Excess tax benefit from equity-based compensation	2,739			—			—			—			2,739			—			—			2,739
Purchase of units for incentive grants - HEP	—			—			—			—			—			(3,379		)	—			(3,379		)
Deferred financing costs and other	—			912			—			—			912			(244		)	—			668
Net advances from subsidiaries	841,821			—			—			(841,821		)	—			—			—			—
	(53,327		)	912			(1,499		)	(841,821		)	(895,735		)	(90,321		)	52,806			(933,250		)
Cash and cash equivalents
Increase (decrease) for the period:	(465,545		)	(3,652		)	(1		)	—			(469,198		)	5,983			—			(463,215		)
Beginning of period	1,748,808			3,652			2			—			1,752,462			5,237			—			1,757,699
End of period	$	1,283,263		$	—		$	1		$	—		$	1,283,264		$	11,220		$	—		$	1,294,484

Description_of_Business_and_Pr1

Description of Business and Presentation of Financial Statements (Policy)	9 Months Ended
	Sep. 30, 2014
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 $2.4 million at September 30, 2014 and December 31, 2013.
Inventories	'
	Inventories: We use the last-in, first-out (“LIFO”) method of valuing inventory. Under the LIFO method, an actual valuation of inventory can only be 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.
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 is effective January 1, 2017, and we are evaluating the impact of this standard.

Financial_Instruments_Tables

Financial Instruments (Tables)	9 Months Ended
	Sep. 30, 2014
Financial Instruments, Owned, at Fair Value [Abstract]	'
Estimated Fair Values Of Debt Instruments	'
	The carrying amounts and estimated fair values of our investments in marketable securities, derivative instruments and senior notes at September 30, 2014 and December 31, 2013 were as follows:
								Fair Value by Input Level
	Financial Instrument	Carrying Amount			Fair Value			Level 1			Level 2			Level 3
		(In thousands)
	September 30, 2014
	Assets:
	Marketable securities	$	623,480		$	623,480		$	—		$	623,480		$	—
	NYMEX futures contracts	1,848			1,848			1,848			—			—
	Commodity price swaps	132,610			132,610			—			15,389			117,221
	HEP interest rate swaps	1,545			1,545			—			1,545			—
	Total assets	$	759,483		$	759,483		$	1,848		$	640,414		$	117,221
	Liabilities:
	Commodity price swaps	$	59,800		$	59,800		$	—		$	58,489		$	1,311
	HollyFrontier senior notes	154,377			155,250			—			155,250			—
	HEP senior notes	296,416			309,000			—			309,000			—
	HEP interest rate swaps	1,231			1,231			—			1,231			—
	Total liabilities	$	511,824		$	525,281		$	—		$	523,970		$	1,311
								Fair Value by Input Level
	Financial Instrument	Carrying Amount			Fair Value			Level 1			Level 2			Level 3
		(In thousands)
	December 31, 2013
	Assets:
	Marketable securities	$	725,160		$	725,160		$	—		$	725,160		$	—
	Commodity price swaps	43,284			43,284			—			36,312			6,972
	HEP interest rate swaps	1,670			1,670			—			1,670			—
	Total assets	$	770,114		$	770,114		$	—		$	763,142		$	6,972
	Liabilities:
	NYMEX futures contracts	$	3,569		$	3,569		$	3,569		$	—		$	—
	Commodity price swaps	83,349			83,349			—			41,059			42,290
	HollyFrontier senior notes	155,054			161,250			—			161,250			—
	HEP senior notes	444,630			471,750			—			471,750			—
	HEP interest rate swaps	1,814			1,814			—			1,814			—
	Total liabilities	$	688,416		$	721,732		$	3,569		$	675,873		$	42,290
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 nine months ended September 30, 2014 and 2013:
		Three Months Ended September 30,						Nine Months Ended September 30,
	Level 3 Financial Instruments	2014			2013			2014			2013
		(In thousands)
	Asset (liability) balance at beginning of period	$	(75,637	)	$	37,126		$	(35,318	)	$	(33,658	)
	Change in fair value:
	Recognized in other comprehensive income	178,511			(9,956		)	65,816			(8,542		)
	Recognized in cost of products sold	11,085			(17,194		)	12,970			30,027
	Settlement date fair value of contractual maturities:
	Recognized in sales and other revenues	6,202			10,138			80,476			25,454
	Recognized in cost of products sold	(4,251		)	(8,460		)	(8,034		)	(1,627		)
	Asset balance at end of period	$	115,910		$	11,654		$	115,910		$	11,654

Earnings_Per_Share_Tables

Earnings Per Share (Tables)	9 Months Ended
	Sep. 30, 2014
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 September 30,				Nine Months Ended September 30,
		2014		2013		2014		2013
		(In thousands, except per share data)
	Net income attributable to HollyFrontier stockholders	$	175,006	$	82,290	$	503,496	$	672,940
	Participating securities' share in earnings	471		285		1,416		2,447
	Net income attributable to common shares	$	174,535	$	82,005	$	502,080	$	670,493
	Average number of shares of common stock outstanding	197,261		199,098		197,895		201,109
	Effect of dilutive variable restricted shares and performance share units (1)	274		411		201		377
	Average number of shares of common stock outstanding assuming dilution	197,535		199,509		198,096		201,486
	Basic earnings per share	$	0.88	$	0.41	$	2.54	$	3.33
	Diluted earnings per share	$	0.88	$	0.41	$	2.53	$	3.33
	(1) Excludes anti-dilutive restricted and performance share units of:	195		251		214		1

StockBased_Compensation_Tables

Stock-Based Compensation (Tables)	9 Months Ended
	Sep. 30, 2014
Share-based Compensation [Abstract]	'
Summary Of Restricted Stock Activity	'
	A summary of restricted stock and restricted stock unit activity and changes during the nine months ended September 30, 2014 is presented below:
	Restricted Stock and Restricted Stock Units	Grants		Weighted Average Grant Date Fair Value		Aggregate Intrinsic Value ($000)
	Outstanding at January 1, 2014 (non-vested)	737,562		$	39.54
	Granted	73,395		48.2
	Vesting (transfer/conversion to common stock)	(103,586	)	33.71
	Forfeited	(73,940	)	42.23
	Outstanding at September 30, 2014 (non-vested)	633,431		$	41.18	$	27,668
Summary Of Performance Share Unit Activity	'
	A summary of performance share unit activity and changes during the nine months ended September 30, 2014 is presented below:
	Performance Share Units	Grants
	Outstanding at January 1, 2014 (non-vested)	983,610
	Granted	26,493
	Vesting and transfer of ownership to recipients	(181,290	)
	Forfeited	(109,517	)
	Outstanding at September 30, 2014 (non-vested)	719,296

Cash_and_Cash_Equivalents_and_1

Cash and Cash Equivalents and Investments in Marketable Securities (Tables)	9 Months Ended
	Sep. 30, 2014
Cash And Cash Equivalents And Investments In Marketable Securities [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)
	September 30, 2014
	Certificates of deposit	$	96,403	$	14	$	(5	)	$	96,412
	Commercial paper	76,331		16		—			76,347
	Corporate debt securities	147,039		10		(50		)	146,999
	State and political subdivisions debt securities	303,824		14		(116		)	303,722
	Total marketable securities	$	623,597	$	54	$	(171	)	$	623,480
	December 31, 2013
	Certificates of deposit	$	74,802	$	21	$	(1	)	$	74,822
	Commercial paper	78,216		28		—			78,244
	Corporate debt securities	96,889		6		(44		)	96,851
	State and political subdivisions debt securities	475,235		49		(41		)	475,243
	Total marketable securities	$	725,142	$	104	$	(86	)	$	725,160

Inventories_Tables

Inventories (Tables)	9 Months Ended
	Sep. 30, 2014
Inventory, Net [Abstract]	'
Inventory Components	'
	Inventory consists of the following components:
			September 30,		December 31, 2013
			2014
			(In thousands)
	Crude oil		$	615,245	$	567,281
	Other raw materials and unfinished products(1)		183,395		154,534
	Finished products(2)		692,678		519,633
	Process chemicals(3)		3,858		3,504
	Repair and maintenance supplies and other		84,289		109,295
	Total inventory		$	1,579,465	$	1,354,247
	-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)	9 Months Ended
	Sep. 30, 2014
Debt [Abstract]	'
Carrying Amounts Of Long-Term Debt	'
	The carrying amounts of long-term debt are as follows:
		September 30,			December 31,
		2014			2013
		(In thousands)
	6.875% Senior Notes
	Principal	$	150,000		$	150,000
	Unamortized premium	4,377			5,054
		154,377			155,054
	Financing Obligation	33,603			34,835
	Total HollyFrontier long-term debt	187,980			189,889
	HEP Credit Agreement	555,000			363,000
	HEP 6.5% Senior Notes
	Principal	300,000			300,000
	Unamortized discount	(3,584		)	(4,073		)
		296,416			295,927
	HEP 8.25% Senior Notes
	Principal	—			150,000
	Unamortized discount	—			(1,297		)
		—			148,703
	Total HEP long-term debt	851,416			807,630
	Total long-term debt	$	1,039,396		$	997,519

Derivative_Instruments_And_Hed1

Derivative Instruments And Hedging Activities (Tables)	9 Months Ended
	Sep. 30, 2014
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 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 September 30, 2014
	Commodity price swaps
	Change in fair value	$	4,580			Sales and other revenues		$	(6,202	)		Sales and other revenues		$	1,498
	Gain reclassified to earnings due to settlements	(14,400		)		Cost of products sold		20,776				Cost of products sold		(6,189		)
	Amortization of discontinued hedges reclassified to earnings	270				Operating expenses		(444		)		Operating expenses		(99		)
	Total	$	(9,550	)				$	14,130					$	(4,790	)
	Three Months Ended September 30, 2013
	Commodity price swaps
	Change in fair value	$	27,049			Sales and other revenues		$	(10,138	)		Sales and other revenues		$	1,949
	Gain reclassified to earnings due to settlements	(22,007		)		Cost of products sold		32,874				Cost of products sold		(962		)
	Amortization of discontinued hedges reclassified to earnings	270				Operating expenses		(999		)		Operating expenses		259
	Total	$	5,312					$	21,737					$	1,246
	Nine Months Ended September 30, 2014
	Commodity price swaps
	Change in fair value	$	145,046			Sales and other revenues		$	(80,475	)		Sales and other revenues		$	1,498
	Gain reclassified to earnings due to settlements	(33,357		)		Cost of products sold		111,217				Cost of products sold		(6,189		)
	Amortization of discontinued hedge reclassified to earnings	810				Operating expenses		1,805				Operating expenses		(905		)
	Total	$	112,499					$	32,547					$	(5,596	)
	Nine Months Ended September 30, 2013
	Commodity price swaps
	Change in fair value	$	41,410			Sales and other revenues		$	(25,454	)		Sales and other revenues		$	2,143
	Gain reclassified to earnings due to settlements	(1,396		)		Cost of products sold		28,271				Cost of products sold		730
	Amortization of discontinued hedge reclassified to earnings	630				Operating expenses		(2,051		)		Operating expenses		—
	Total	$	40,644					$	766					$	2,873
Schedule of Notional Amounts of Outstanding Derivatives Serving as Cash Flow Hedges	'
	As of September 30, 2014, 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			2014			2015			2016			2017			Unit of Measure
	Natural gas - long		31,200,000			2,400,000			9,600,000			9,600,000			9,600,000			MMBTU
	WTI crude oil - long		11,418,000			7,038,000			4,380,000			—			—			Barrels
	Ultra-low sulfur diesel - short		8,106,000			3,726,000			4,380,000			—			—			Barrels
	Sub octane gasoline - short		3,312,000			3,312,000			—			—			—			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 September 30,								Nine Months Ended September 30,
	Location of Gain (Loss) Recognized in Income		2014				2013				2014				2013
			(In thousands)
	Cost of products sold		$	27,773			$	(29,515	)		$	3,367			$	5,916
	Operating expenses		3				(157		)		(185		)		(5,458		)
	Total		$	27,776			$	(29,672	)		$	3,182			$	458
Schedule of Notional Amounts of Outstanding Derivative Positions	'
	As of September 30, 2014, 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			2014			2015			2016			2017			Unit of Measure
	Commodity price swap (WCS spread) - long	1,610,000			1,610,000			—			—			—			Barrels
	Commodity price swap (WTS spread) - long	1,825,000			—			1,825,000			—			—			Barrels
	Commodity price swap (WTI) - long	365,000			—			365,000			—			—			Barrels
	Commodity price swap (natural gas) - long	31,200,000			2,400,000			9,600,000			9,600,000			9,600,000			MMBTU
	Commodity price swap (natural gas) - short	31,200,000			2,400,000			9,600,000			9,600,000			9,600,000			MMBTU
	NYMEX futures (WTI) - short	1,043,000			939,000			104,000			—			—			Barrels
Schedule of Interest Rate Derivatives	'
	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 September 30, 2014
	Interest rate swaps
	Change in fair value	$	553
	Loss reclassified to earnings due to settlements	556				Interest expense		$	(556	)
	Total	$	1,109					$	(556	)
	Three Months Ended September 30, 2013
	Interest rate swaps
	Change in fair value	$	(1,626	)
	Loss reclassified to earnings due to settlements	529				Interest expense		$	(529	)
	Total	$	(1,097	)				$	(529	)
	Nine Months Ended September 30, 2014
	Interest rate swaps
	Change in fair value	$	(1,189	)
	Loss reclassified to earnings due to settlements	1,647				Interest expense		$	(1,647	)
	Total	$	458					$	(1,647	)
	Nine Months Ended September 30, 2013
	Interest rate swaps
	Change in fair value	$	1,329
	Loss reclassified to earnings due to settlements	1,549
	Amortization of discontinued hedge reclassified to earnings	849				Interest expense		$	(2,398	)
	Total	$	3,727					$	(2,398	)
Schedule of Derivative Instruments in Statement of Financial Position, Fair Value	'
	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)
	September 30, 2014
	Derivatives designated as cash flow hedging instruments:
	Commodity price swap contracts		$	104,969			$	(31,480	)		$	73,489			$	12,735			$	(5,456	)	$	7,279
	Interest rate swap contracts		1,545				—				1,545				1,231				—			1,231
			$	106,514			$	(31,480	)		$	75,034			$	13,966			$	(5,456	)	$	8,510
	Derivatives not designated as cash flow hedging instruments:
	Commodity price swap contracts		$	14,325			$	(3,961	)		$	10,364			$	11,624			$	(7,860	)	$	3,764
	NYMEX futures contracts		1,848				—				1,848				—				—			—
			$	16,173			$	(3,961	)		$	12,212			$	11,624			$	(7,860	)	$	3,764
	Total net balance										$	87,246										$	12,274
	Balance sheet classification:		Prepayment and other								$	84,559
			Intangibles and other								2,687				Other long-term liabilities							$	12,274
											$	87,246										$	12,274
			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, 2013
	Derivatives designated as cash flow hedging instruments:
	Commodity price swap contracts		$	—			$	—			$	—			$	63,561			$	(23,679	)	$	39,882
	Interest rate swap contracts		1,670				—				1,670				1,814				—			1,814
			$	1,670			$	—			$	1,670			$	65,375			$	(23,679	)	$	41,696
	Derivatives not designated as cash flow hedging instruments:
	Commodity price swap contracts		$	6,972			$	—			$	6,972			$	19,766			$	(12,611	)	$	7,155
	NYMEX futures contracts		—				—				—				3,569				—			3,569
			$	6,972			$	—			$	6,972			$	23,335			$	(12,611	)	$	10,724
	Total net balance										$	8,642										$	52,420
	Balance sheet classification:		Prepayment and other								$	6,972			Accrued liabilities							$	26,843
			Intangibles and other								1,670				Other long-term liabilities							25,577
											$	8,642										$	52,420

Equity_Tables

Equity (Tables)	9 Months Ended
	Sep. 30, 2014
Stockholders' Equity Note [Abstract]	'
Changes To Equity	'
	Changes to equity during the nine months ended September 30, 2014 are presented below:
			HollyFrontier			Noncontrolling			Total
			Stockholders’			Interest			Equity
			Equity
			(In thousands)
	Balance at December 31, 2013		$	5,999,620		$	609,778		$	6,609,398
	Net income		503,496			33,177			536,673
	Dividends		(485,803		)	—			(485,803		)
	Distributions to noncontrolling interest holders		—			(58,473		)	(58,473		)
	Other comprehensive income, net of tax		69,189			278			69,467
	Equity-based compensation		18,235			2,493			20,728
	Excess tax benefit attributable to equity-based compensation		4,482			—			4,482
	Purchase of treasury stock (1)		(135,062		)	—			(135,062		)
	Purchase of HEP units for restricted grants		—			(1,064		)	(1,064		)
	Other		—			502			502
	Balance at September 30, 2014		$	5,974,157		$	586,691		$	6,560,848
	-1	Includes 92,048 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_Los1

Other Comprehensive Income (Loss) (Tables)	9 Months Ended
	Sep. 30, 2014
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			After-Tax
					(Benefit)
		(In thousands)
	Three Months Ended September 30, 2014
	Net unrealized loss on marketable securities	$	(165	)	$	(64	)	$	(101	)
	Net unrealized loss on hedging instruments	(8,441		)	(3,527		)	(4,914		)
	Net change in post-retirement benefit obligations	422			163			259
	Other comprehensive loss	(8,184		)	(3,428		)	(4,756		)
	Less other comprehensive income attributable to noncontrolling interest	673			—			673
	Other comprehensive loss attributable to HollyFrontier stockholders	$	(8,857	)	$	(3,428	)	$	(5,429	)
	Three Months Ended September 30, 2013
	Net unrealized gain on marketable securities	$	34		$	13		$	21
	Net unrealized gain on hedging instruments	4,215			1,933			2,282
	Other comprehensive income	4,249			1,946			2,303
	Less other comprehensive loss attributable to noncontrolling interest	(665		)	—			(665		)
	Other comprehensive income attributable to HollyFrontier stockholders	$	4,914		$	1,946		$	2,968
	Nine Months Ended September 30, 2014
	Net unrealized loss on marketable securities	$	(129	)	$	(50	)	$	(79	)
	Net unrealized gain on hedging instruments	112,957			43,616			69,341
	Net change in post-retirement benefit obligations	333			128			205
	Other comprehensive income	113,161			43,694			69,467
	Less other comprehensive income attributable to noncontrolling interest	278			—			278
	Other comprehensive income attributable to HollyFrontier stockholders	$	112,883		$	43,694		$	69,189
	Nine Months Ended September 30, 2013
	Net unrealized gain on marketable securities	$	5		$	2		$	3
	Net unrealized gain on hedging instruments	44,371			16,473			27,898
	Net change in pension and other post-retirement benefit obligations	30,712			11,946			18,766
	Other comprehensive income	75,088			28,421			46,667
	Less other comprehensive income attributable to noncontrolling interest	2,068			—			2,068
	Other comprehensive income attributable to HollyFrontier stockholders	$	73,020		$	28,421		$	44,599
Reclassifications from Other Comprehensive Income to Income Statement [Table Text Block]	'
	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 September 30,
		2014			2013
	Marketable securities	$	12		$	10		Interest income
		5			4			Income tax expense
		7			6			Net of tax
	Hedging instruments:
	Commodity price swaps	(6,202		)	(10,138		)	Sales and other revenues
		20,776			32,874			Cost of products sold
		(444		)	(999		)	Operating expenses
	Interest rate swaps	(556		)	(529		)	Interest expense
		13,574			21,208
		5,384			8,375			Income tax expense
		8,190			12,833			Net of tax
		337			321			Noncontrolling interest
		8,527			13,154			Net of tax and noncontrolling interest
	Retirement restoration plan	(422		)	—			General and administrative expenses
		(163		)	—			Income tax benefit
		(259		)	—			Net of tax
	Total reclassifications for the period	$	8,275		$	13,160
		Nine Months Ended September 30,
		2014			2013
	Marketable securities	$	13		$	13		Interest income
		5			5			Income tax expense
		8			8			Net of tax
	Hedging instruments:
	Commodity price swaps	(80,475		)	(25,454		)	Sales and other revenues
		111,217			28,271			Cost of products sold
		1,805			(2,051		)	Operating expenses
	Interest rate swaps	(1,647		)	(2,398		)	Interest expense
		30,900			(1,632		)
		12,345			(69		)	Income tax expense (benefit)
		18,555			(1,563		)	Net of tax
		998			1,453			Noncontrolling interest
		19,553			(110		)	Net of tax and noncontrolling interest
	Pension and other post-retirement benefit obligations:
	Pension obligation	—			(2,460		)	Cost of products sold
		—			(23,260		)	Operating expenses
		—			(3,266		)	General and administrative expenses
		—			(28,986		)
		—			(11,275		)	Income tax benefit
		—			(17,711		)	Net of tax
	Post-retirement healthcare obligation	—			(84		)	Cost of products sold
		—			(1,549		)	Operating expenses
		—			(93		)	General and administrative expenses
		—			(1,726		)
		—			(671		)	Income tax benefit
		—			(1,055		)	Net of tax
	Retirement restoration plan	(422		)	—			General and administrative expenses
		(163		)	—			Income tax benefit
		(259		)	—			Net of tax
	Total reclassifications for the period	$	19,302		$	(18,868	)
Accumulated Other Comprehensive Loss In Equity	'
	Accumulated other comprehensive income in the equity section of our consolidated balance sheets includes:
		September 30,			December 31,
		2014			2013
		(In thousands)
	Unrealized gain on post-retirement benefit obligations	$	27,896		$	27,691
	Unrealized gain (loss) on marketable securities	(69		)	10
	Unrealized gain (loss) on hedging instruments, net of noncontrolling interest	42,184			(26,879		)
	Accumulated other comprehensive income	$	70,011		$	822

Postretirement_Plan_Tables

Post-retirement Plan (Tables)	9 Months Ended
	Sep. 30, 2014
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 September 30,						Nine Months Ended September 30,
		2014			2013			2014			2013
		(In thousands)
	Service cost – benefit earned during the period	$	224		$	278		$	672		$	834
	Interest cost on projected benefit obligations	159			159			478			477
	Amortization of prior service credit	(1,074		)	(1,474		)	(3,222		)	(4,422		)
	Amortization of net loss	—			31			—			93
	Loss on settlement	—			—			—			1,726
	Net periodic post-retirement credit	$	(691	)	$	(1,006	)	$	(2,072	)	$	(1,292	)

Segment_Information_Tables

Segment Information (Tables)	9 Months Ended
	Sep. 30, 2014
Segment Information [Abstract]	'
Schedule Of Segment Reporting Information	'
		Refining		HEP		Corporate			Consolidations			Consolidated
						and Other			and Eliminations			Total
		(In thousands)
	Three Months Ended September 30, 2014
	Sales and other revenues	$	5,303,053	$	82,141	$	181		$	(67,820	)	$	5,317,555
	Depreciation and amortization	$	63,109	$	15,078	$	2,965		$	(207	)	$	80,945
	Income (loss) from operations	$	292,132	$	39,341	$	(28,313	)	$	(549	)	$	302,611
	Capital expenditures	$	98,115	$	22,875	$	3,374		$	—		$	124,364
	Three Months Ended September 30, 2013
	Sales and other revenues	$	5,314,954	$	77,625	$	257		$	(65,714	)	$	5,327,122
	Depreciation and amortization	$	61,553	$	19,042	$	1,739		$	(207	)	$	82,127
	Income (loss) from operations	$	144,508	$	34,481	$	(28,701	)	$	(538	)	$	149,750
	Capital expenditures	$	92,918	$	14,238	$	8,230		$	—		$	115,386
	Nine Months Ended September 30, 2014
	Sales and other revenues	$	15,440,047	$	244,177	$	1,802		$	(204,818	)	$	15,481,208
	Depreciation and amortization	$	210,490	$	45,739	$	7,275		$	(621	)	$	262,883
	Income (loss) from operations	$	835,555	$	117,670	$	(81,670	)	$	(1,603	)	$	869,952
	Capital expenditures	$	290,392	$	61,657	$	17,084		$	—		$	369,133
	Nine Months Ended September 30, 2013
	Sales and other revenues	$	15,294,261	$	229,230	$	1,054		$	(190,786	)	$	15,333,759
	Depreciation and amortization	$	172,166	$	48,410	$	4,426		$	(621	)	$	224,381
	Income (loss) from operations	$	1,145,487	$	102,347	$	(87,319	)	$	(1,564	)	$	1,158,951
	Capital expenditures	$	231,416	$	31,099	$	23,674		$	—		$	286,189
		Refining		HEP		Corporate and Other			Consolidations and Eliminations			Consolidated Total
		(In thousands)
	September 30, 2014
	Cash, cash equivalents and total investments in marketable securities	$	3,501	$	1,667	$	1,474,338		$	—		$	1,479,506
	Total assets	$	7,476,849	$	1,418,780	$	1,593,308		$	(307,167	)	$	10,181,770
	Long-term debt	$	—	$	851,416	$	187,980		$	—		$	1,039,396
	December 31, 2013
	Cash, cash equivalents and total investments in marketable securities	$	1,860	$	6,352	$	1,657,051		$	—		$	1,665,263
	Total assets	$	7,094,558	$	1,413,908	$	1,881,119		$	(332,846	)	$	10,056,739
	Long-term debt	$	—	$	807,630	$	189,889		$	—		$	997,519

Supplemental_GuarantorNonGuara1

Supplemental Guarantor/Non-Guarantor Financial Information (Tables)	9 Months Ended
	Sep. 30, 2014
Supplemental Guarantor / Non-Guarantor Financial Information [Abstract]	'
Condensed Consolidating Balance Sheet	'
	Condensed Consolidating Balance Sheet
	September 30, 2014	Parent			Guarantor			Non-			Eliminations			HollyFrontier			Non-Guarantor			Consolidations and Eliminations			Consolidated
					Restricted			Guarantor						Corp. Before			Non-Restricted
					Subsidiaries			Restricted						Consolidation			Subsidiaries
								Subsidiaries						of HEP			(HEP Segment)
		(In thousands)
	ASSETS
	Current assets:
	Cash and cash equivalents	$	850,727		$	3,474		$	158		$	—		$	854,359		$	1,667		$	—		$	856,026
	Marketable securities	623,480			—			—			—			623,480			—			—			623,480
	Accounts receivable, net	9,752			675,673			3,358			—			688,783			35,972			(34,504		)	690,251
	Intercompany accounts receivable	—			788,868			379,045			(1,167,913		)	—			—			—			—
	Inventories	—			1,577,672			—			—			1,577,672			1,793			—			1,579,465
	Income taxes receivable	32,888			—			—			—			32,888			—			—			32,888
	Prepayments and other	9,920			107,367			—			—			117,287			2,626			(8,290		)	111,623
	Total current assets	1,526,767			3,153,054			382,561			(1,167,913		)	3,894,469			42,058			(42,794		)	3,893,733
	Properties, plants and equip, net	32,525			2,774,100			855			—			2,807,480			1,016,223			(263,438		)	3,560,265
	Investment in subsidiaries	6,707,737			270,685			—			(6,978,422		)	—			—			—			—
	Intangibles and other assets	23,823			2,344,385			25,000			(25,000		)	2,368,208			360,499			(935		)	2,727,772
	Total assets	$	8,290,852		$	8,542,224		$	408,416		$	(8,171,335	)	$	9,070,157		$	1,418,780		$	(307,167	)	$	10,181,770
	LIABILITIES AND EQUITY
	Current liabilities:
	Accounts payable	$	15,748		$	1,444,787		$	—		$	—		$	1,460,535		$	15,084		$	(34,504	)	$	1,441,115
	Intercompany accounts payable	1,167,913			—			—			(1,167,913		)	—			—			—			—
	Accrued liabilities	51,334			53,302			1,161			—			105,797			25,426			(8,290		)	122,933
	Deferred income tax liabilities	222,701			—			—			—			222,701			—			—			222,701
	Total current liabilities	1,457,696			1,498,089			1,161			(1,167,913		)	1,789,033			40,510			(42,794		)	1,786,749
	Long-term debt	179,377			33,603			—			(25,000		)	187,980			851,416			—			1,039,396
	Liability to HEP	—			236,305			—			—			236,305			—			(236,305		)	—
	Deferred income tax liabilities	654,355			—			—			—			654,355			5,311			—			659,666
	Other long-term liabilities	31,253			66,490			—			—			97,743			39,446			(2,078		)	135,111
	Investment in HEP	—			—			136,570			—			136,570			—			(136,570		)	—
	Equity – HollyFrontier	5,968,171			6,707,737			270,685			(6,978,422		)	5,968,171			386,255			(380,269		)	5,974,157
	Equity – noncontrolling interest	—			—			—			—			—			95,842			490,849			586,691
	Total liabilities and equity	$	8,290,852		$	8,542,224		$	408,416		$	(8,171,335	)	$	9,070,157		$	1,418,780		$	(307,167	)	$	10,181,770
	Condensed Consolidating Balance Sheet
	December 31, 2013	Parent			Guarantor			Non-			Eliminations			HollyFrontier			Non-Guarantor			Consolidations and Eliminations			Consolidated
					Restricted			Guarantor						Corp. Before			Non-Restricted
					Subsidiaries			Restricted						Consolidation			Subsidiaries
								Subsidiaries						of HEP			(HEP Segment)
		(In thousands)
	ASSETS
	Current assets:
	Cash and cash equivalents	$	931,920		$	1,817		$	14		$	—		$	933,751		$	6,352		$	—		$	940,103
	Marketable securities	725,160			—			—			—			725,160			—			—			725,160
	Accounts receivable, net	6,095			698,109			8,075			—			712,279			34,736			(38,213		)	708,802
	Intercompany accounts receivable	—			149,907			313,623			(463,530		)	—			—			—			—
	Inventories	—			1,352,656			—			—			1,352,656			1,591			—			1,354,247
	Income taxes receivable	109,376			—			—			—			109,376			—			—			109,376
	Prepayments and other	21,843			45,413			—			—			67,256			2,283			(10,783		)	58,756
	Total current assets	1,794,394			2,247,902			321,712			(463,530		)	3,900,478			44,962			(48,996		)	3,896,444
	Properties, plants and equip, net	30,007			2,633,739			24			—			2,663,770			1,004,975			(274,149		)	3,394,596
	Investment in subsidiaries	5,722,025			216,687			—			(5,938,712		)	—			—			—			—
	Intangibles and other assets	23,034			2,380,268			25,000			(25,000		)	2,403,302			363,970			(1,573		)	2,765,699
	Total assets	$	7,569,460		$	7,478,596		$	346,736		$	(6,427,242	)	$	8,967,550		$	1,413,907		$	(324,718	)	$	10,056,739
	LIABILITIES AND EQUITY
	Current liabilities:
	Accounts payable	$	16,704		$	1,323,603		$	383		$	—		$	1,340,690		$	22,898		$	(38,212	)	$	1,325,376
	Intercompany accounts payable	463,530			—			—			(463,530		)	—			—			—			—
	Accrued liabilities	43,254			63,181			795			—			107,230			28,668			(10,783		)	125,115
	Deferred income tax liabilities	223,999			—			—			—			223,999			—			—			223,999
	Total current liabilities	747,487			1,386,784			1,178			(463,530		)	1,671,919			51,566			(48,995		)	1,674,490
	Long-term debt	180,054			34,835			—			(25,000		)	189,889			807,630			—			997,519
Liability to HEP	—			245,536			—			—			245,536			—			(245,536		)	—
Deferred income tax liabilities	611,555			—			—			—			611,555			5,287			—			616,842
Other long-term liabilities	35,874			89,416			—			—			125,290			35,918			(2,718		)	158,490
Investment in HEP	—			—			128,871			—			128,871			—			(128,871		)	—
Equity – HollyFrontier	5,994,490			5,722,025			216,687			(5,938,712		)	5,994,490			416,018			(410,888		)	5,999,620
Equity – noncontrolling interest	—			—			—			—			—			97,488			512,290			609,778
Total liabilities and equity	$	7,569,460		$	7,478,596		$	346,736		$	(6,427,242	)	$	8,967,550		$	1,413,907		$	(324,718	)	$	10,056,739
Condensed Consolidating Statement of Comprehensive Income	'
	Condensed Consolidating Statement of Income and Comprehensive Income
	Three Months Ended September 30, 2014	Parent			Guarantor			Non-			Eliminations			HollyFrontier			Non-Guarantor			Consolidations and Eliminations			Consolidated
					Restricted			Guarantor						Corp. Before			Non-Restricted
					Subsidiaries			Restricted						Consolidation			Subsidiaries
								Subsidiaries						of HEP			(HEP Segment)
		(In thousands)
	Sales and other revenues	$	103		$	5,303,131		$	—		$	—		$	5,303,234		$	82,141		$	(67,820	)	$	5,317,555
	Operating costs and expenses:
	Cost of products sold	—			4,692,587			—			—			4,692,587			—			(66,694		)	4,625,893
	Operating expenses	—			255,871			—			—			255,871			25,456			(370		)	280,957
	General and administrative	24,904			530			36			(587		)	24,883			2,266			—			27,149
	Depreciation and amortization	2,055			66,832			—			587			69,474			15,078			(3,607		)	80,945
	Total operating costs and expenses	26,959			5,015,820			36			—			5,042,815			42,800			(70,671		)	5,014,944
	Income (loss) from operations	(26,856		)	287,311			(36		)	—			260,419			39,341			2,851			302,611
	Other income (expense):
	Earnings (loss) of equity method investments	305,736			17,021			19,040			(324,884		)	16,913			880			(19,040		)	(1,247		)
	Interest income (expense)	(1,227		)	1,962			144			—			879			(8,585		)	(2,328		)	(10,034		)
	Loss on sale of assets	—			(556		)	—			—			(556		)	—			—			(556		)
		304,509			18,427			19,184			(324,884		)	17,236			(7,705		)	(21,368		)	(11,837		)
	Income before income taxes	277,653			305,738			19,148			(324,884		)	277,655			31,636			(18,517		)	290,774
	Income tax provision	103,174			—			—			—			103,174			42			—			103,216
	Net income	174,479			305,738			19,148			(324,884		)	174,481			31,594			(18,517		)	187,558
	Less net income attributable to noncontrolling interest	—			—			—			—			—			1,509			11,043			12,552
	Net income attributable to HollyFrontier stockholders	$	174,479		$	305,738		$	19,148		$	(324,884	)	$	174,481		$	30,085		$	(29,560	)	$	175,006
	Comprehensive income attributable to HollyFrontier stockholders	$	169,050		$	296,622		$	19,584		$	(316,206	)	$	169,050		$	30,520		$	(29,993	)	$	169,577
	Condensed Consolidating Statement of Income and Comprehensive Income
	Three Months Ended September 30, 2013	Parent			Guarantor			Non-			Eliminations			HollyFrontier			Non-Guarantor			Consolidations and Eliminations			Consolidated
					Restricted			Guarantor						Corp. Before			Non-Restricted
					Subsidiaries			Restricted						Consolidation			Subsidiaries
								Subsidiaries						of HEP			(HEP Segment)
		(In thousands)
	Sales and other revenues	$	146		$	5,315,037		$	28		$	—		$	5,315,211		$	77,625		$	(65,714	)	$	5,327,122
	Operating costs and expenses:
	Cost of products sold	—			4,874,603			—			—			4,874,603			—			(64,613		)	4,809,990
	Operating expenses	—			234,987			—			—			234,987			21,687			(356		)	256,318
	General and administrative	25,995			422			105			—			26,522			2,415			—			28,937
	Depreciation and amortization	1,496			65,195			—			—			66,691			19,042			(3,606		)	82,127
	Total operating costs and expenses	27,491			5,175,207			105			—			5,202,803			43,144			(68,575		)	5,177,372
	Income (loss) from operations	(27,345		)	139,830			(77		)	—			112,408			34,481			2,861			149,750
	Other income (expense):
	Earnings of equity method investments	158,437			16,207			16,822			(175,320		)	16,146			835			(16,822		)	159
	Interest income (expense)	(782		)	2,400			138			—			1,756			(11,812		)	(2,416		)	(12,472		)
		157,655			18,607			16,960			(175,320		)	17,902			(10,977		)	(19,238		)	(12,313		)
	Income before income taxes	130,310			158,437			16,883			(175,320		)	130,310			23,504			(16,377		)	137,437
	Income tax provision	48,488			—			—			—			48,488			40			—			48,528
	Net income	81,822			158,437			16,883			(175,320		)	81,822			23,464			(16,377		)	88,909
	Less net income attributable to noncontrolling interest	—			—			—			—			—			1,172			5,447			6,619
	Net income attributable to HollyFrontier stockholders	$	81,822		$	158,437		$	16,883		$	(175,320	)	$	81,822		$	22,292		$	(21,824	)	$	82,290
	Comprehensive income attributable to HollyFrontier stockholders	$	84,790		$	163,317		$	16,450		$	(179,767	)	$	84,790		$	21,859		$	(21,391	)	$	85,258
	Condensed Consolidating Statement of Income and Comprehensive Income
	Nine Months Ended September 30, 2014	Parent			Guarantor			Non-			Eliminations			HollyFrontier			Non-Guarantor			Consolidations and Eliminations			Consolidated
					Restricted			Guarantor						Corp. Before			Non-Restricted
					Subsidiaries			Restricted						Consolidation			Subsidiaries
								Subsidiaries						of HEP			(HEP Segment)
		(In thousands)
	Sales and other revenues	$	383		$	15,440,531		$	935		$	—		$	15,441,849		$	244,177		$	(204,818	)	$	15,481,208
	Operating costs and expenses:
	Cost of products sold	—			13,640,897			—			—			13,640,897			—			(201,538		)	13,439,359
	Operating expenses	—			754,798			—			—			754,798			72,835			(1,056		)	826,577
	General and administrative	70,354			4,038			112			—			74,504			7,933			—			82,437
	Depreciation and amortization	5,855			221,999			—			—			227,854			45,739			(10,710		)	262,883
	Total operating costs and expenses	76,209			14,621,732			112			—			14,698,053			126,507			(213,304		)	14,611,256
	Income (loss) from operations	(75,826		)	818,799			823			—			743,796			117,670			8,486			869,952
Other income (expense):
Earnings (loss) of equity method investments	871,883			47,589			51,455			(924,578		)	46,349			2,150			(51,455		)	(2,956		)
Interest income (expense)	(2,024		)	6,051			417			—			4,444			(27,365		)	(7,007		)	(29,928		)
Loss on early extinguishment of debt	—			—			—			—			—			(7,677		)	—			(7,677		)
Loss on sale of assets	—			(556		)	—			—			(556		)	—			—			(556		)
	869,859			53,084			51,872			(924,578		)	50,237			(32,892		)	(58,462		)	(41,117		)
Income before income taxes	794,033			871,883			52,695			(924,578		)	794,033			84,778			(49,976		)	828,835
Income tax provision	292,017			—			—			—			292,017			145			—			292,162
Net income	502,016			871,883			52,695			(924,578		)	502,016			84,633			(49,976		)	536,673
Less net income attributable to noncontrolling interest	—			—			—			—			—			6,562			26,615			33,177
Net income attributable to HollyFrontier stockholders	$	502,016		$	871,883		$	52,695		$	(924,578	)	$	502,016		$	78,071		$	(76,591	)	$	503,496
Comprehensive income attributable to HollyFrontier stockholders	$	571,205		$	984,562		$	52,875		$	(1,037,437	)	$	571,205		$	78,250		$	(76,770	)	$	572,685
Condensed Consolidating Statement of Income and Comprehensive Income
Nine Months Ended September 30, 2013	Parent			Guarantor			Non-			Eliminations			HollyFrontier			Non-Guarantor			Consolidations and Eliminations			Consolidated
				Restricted			Guarantor						Corp. Before			Non-Restricted
				Subsidiaries			Restricted						Consolidation			Subsidiaries
							Subsidiaries						of HEP			(HEP Segment)
	(In thousands)
Sales and other revenues	$	777		$	15,294,447		$	91		$	—		$	15,295,315		$	229,230		$	(190,786	)	$	15,333,759
Operating costs and expenses:
Cost of products sold	—			13,246,883			—			—			13,246,883			—			(187,550		)	13,059,333
Operating expenses	—			730,284			—			—			730,284			69,726			(1,051		)	798,959
General and administrative	80,368			2,827			193			—			83,388			8,747			—			92,135
Depreciation and amortization	3,822			182,858			—			—			186,680			48,410			(10,709		)	224,381
Total operating costs and expenses	84,190			14,162,852			193			—			14,247,235			126,883			(199,310		)	14,174,808
Income (loss) from operations	(83,413		)	1,131,595			(102		)	—			1,048,080			102,347			8,524			1,158,951
Other income (expense):
Earnings (loss) of equity method investments	1,178,587			40,413			43,215			(1,222,109		)	40,106			2,238			(43,215		)	(871		)
Interest income (expense)	(15,459		)	6,579			409			—			(8,471		)	(35,818		)	(6,988		)	(51,277		)
Loss on early extinguishment of debt	(22,109		)	—			—			—			(22,109		)	—			—			(22,109		)
	1,141,019			46,992			43,624			(1,222,109		)	9,526			(33,580		)	(50,203		)	(74,257		)
Income before income taxes	1,057,606			1,178,587			43,522			(1,222,109		)	1,057,606			68,767			(41,679		)	1,084,694
Income tax provision	386,225			—			—			—			386,225			440			—			386,665
Net income	671,381			1,178,587			43,522			(1,222,109		)	671,381			68,327			(41,679		)	698,029
Less net income attributable to noncontrolling interest	—			—			—			—			—			5,192			19,897			25,089
Net income attributable to HollyFrontier stockholders	$	671,381		$	1,178,587		$	43,522		$	(1,222,109	)	$	671,381		$	63,135		$	(61,576	)	$	672,940
Comprehensive income attributable to HollyFrontier stockholders	$	715,981		$	1,220,890		$	45,181		$	(1,266,071	)	$	715,981		$	64,794		$	(63,235	)	$	717,540
Condensed Consolidating Statement of Cash Flows	'
	Condensed Consolidating Statement of Cash Flows
	Nine Months Ended September 30, 2014	Parent			Guarantor			Non-			Eliminations			HollyFrontier			Non-Guarantor			Consolidations and Eliminations			Consolidated
					Restricted			Guarantor						Corp. Before			Non-Restricted
					Subsidiaries			Restricted						Consolidation			Subsidiaries
								Subsidiaries						of HEP			(HEP Segment)
		(In thousands)
	Cash flows from operating activities	$	(260,533	)	$	930,722		$	55,047		$	—		$	725,236		$	140,154		$	(59,457	)	$	805,933
	Cash flows from investing activities
	Additions to properties, plants and equipment	(8,373		)	(298,272		)	(831		)	—			(307,476		)	—			—			(307,476		)
	Additions to properties, plants and equipment – HEP	—			—			—			—			—			(61,657		)	—			(61,657		)
	Proceeds from sale of assets	—			14,711			—			—			14,711			—			—			14,711
	Investment in Sabine Biofuels	—			(5,000		)	—			—			(5,000		)	—			—			(5,000		)
	Repayments from Sabine Biofuels	—			10,021			—			—			10,021			—			—			10,021
	Purchases of marketable securities	(762,224		)	—			—			—			(762,224		)	—			—			(762,224		)
	Sales and maturities of marketable securities	863,769			—			—			—			863,769			—			—			863,769
	Net advances to Parent	—			(649,294		)	(54,565		)	703,859			—			—			—			—
		93,172			(927,834		)	(55,396		)	703,859			(186,199		)	(61,657		)	—			(247,856		)
	Cash flows from financing activities
	Net borrowings under credit agreement – HEP	—			—			—			—			—			192,000			—			192,000
	Redemption of senior notes - HEP	—			—			—			—			—			(156,188		)	—			(156,188		)
	Purchase of treasury stock	(133,150		)	—			—			—			(133,150		)	—			—			(133,150		)
	Dividends	(485,766		)	—			—			—			(485,766		)	—			—			(485,766		)
	Distributions to noncontrolling interest	—			—			—			—			—			(117,930		)	59,457			(58,473		)
	Excess tax benefit from equity-based compensation	4,482			—			—			—			4,482			—			—			4,482
	Purchase of units for incentive grants - HEP	—			—			—			—			—			(1,064		)	—			(1,064		)
	Deferred financing costs and other	(3,257		)	(1,231		)	493			—			(3,995		)	—			—			(3,995		)
	Net advances from subsidiaries	703,859			—			—			(703,859		)	—			—			—			—
		86,168			(1,231		)	493			(703,859		)	(618,429		)	(83,182		)	59,457			(642,154		)
	Cash and cash equivalents
	Increase (decrease) for the period	(81,193		)	1,657			144			—			(79,392		)	(4,685		)	—			(84,077		)
	Beginning of period	931,920			1,817			14			—			933,751			6,352			—			940,103
	End of period	$	850,727		$	3,474		$	158		$	—		$	854,359		$	1,667		$	—		$	856,026
	Condensed Consolidating Statement of Cash Flows
	Nine Months Ended September 30, 2013	Parent			Guarantor			Non-			Eliminations			HollyFrontier			Non-Guarantor			Consolidations and Eliminations			Consolidated
					Restricted			Guarantor						Corp. Before			Non-Restricted
					Subsidiaries			Restricted						Consolidation			Subsidiaries
								Subsidiaries						of HEP			(HEP Segment)
		(In thousands)
	Cash flows from operating activities	$	(377,762	)	$	1,066,429		$	41,380		$	—		$	730,047		$	124,922		$	(52,806	)	$	802,163
	Cash flows from investing activities:
	Additions to properties, plants and equipment	(8,056		)	(247,034		)	—			—			(255,090		)	—			—			(255,090		)
	Additions to properties, plants and equipment – HEP	—			—			—			—			—			(31,099		)	—			(31,099		)
	Acquisition of trucking operations	—			(11,301		)	—			—			(11,301		)	—			—			(11,301		)
	Proceeds from sale of assets	—			3,321			—			—			3,321			2,481			—			5,802
	Investment in Sabine Biofuels	—			(3,000		)	—			—			(3,000		)	—			—			(3,000		)
	Net advances to Sabine biofuels	—			(11,040		)	—			—			(11,040		)	—			—			(11,040		)
	Purchases of marketable securities	(672,701		)	—			—			—			(672,701		)	—			—			(672,701		)
	Sales and maturities of marketable securities	646,301			—			—			—			646,301			—			—			646,301
	Net advances to Parent	—			(801,939		)	(39,882		)	841,821			—			—			—			—
		(34,456		)	(1,070,993		)	(39,882		)	841,821			(303,510		)	(28,618		)	—			(332,128		)
	Cash flows from financing activities:
	Net repayments under credit agreement – HEP	—			—			—			—			—			(56,000		)	—			(56,000		)
	Redemption of senior notes	(300,973		)	—			—			—			(300,973		)	—			—			(300,973		)
	Proceeds from common unit offerings - HEP	73,444			—			—			—			73,444			73,444			—			146,888
	Purchase of treasury stock	(184,947		)	—			—			—			(184,947		)	—			—			(184,947		)
	Contribution from general partner	—			—			(1,499		)	—			(1,499		)	1,499			—			—
	Dividends	(485,411		)	—			—			—			(485,411		)	—			—			(485,411		)
	Distributions to noncontrolling interest	—			—			—			—			—			(105,641		)	52,806			(52,835		)
	Excess tax benefit from equity-based compensation	2,739			—			—			—			2,739			—			—			2,739
	Purchase of units for incentive grants - HEP	—			—			—			—			—			(3,379		)	—			(3,379		)
	Deferred financing costs and other	—			912			—			—			912			(244		)	—			668
	Net advances from subsidiaries	841,821			—			—			(841,821		)	—			—			—			—
		(53,327		)	912			(1,499		)	(841,821		)	(895,735		)	(90,321		)	52,806			(933,250		)
Cash and cash equivalents
Increase (decrease) for the period:	(465,545		)	(3,652		)	(1		)	—			(469,198		)	5,983			—			(463,215		)
Beginning of period	1,748,808			3,652			2			—			1,752,462			5,237			—			1,757,699
End of period	$	1,283,263		$	—		$	1		$	—		$	1,283,264		$	11,220		$	—		$	1,294,484

Description_of_Business_and_Pr2

Description of Business and Presentation of Financial Statements (Details) (USD $)	3 Months Ended	9 Months Ended
	Sep. 30, 2014	Sep. 30, 2014	Dec. 31, 2013
		mi
		Petroleum_Refineries
Ownership Interest By Project Type [Line Items]	'	'	'
Goodwill, Impaired, Method for Fair Value Determination	'	'0.1	'
Number of refineries located in Tulsa, Oklahoma	'	2	'
Refinery Distance From Main City [Miles]	'	65	'
Percentage Of Interest Owned In Development Stage Biodiesel Production Facility	'	50.00%	'
Allowance for doubtful accounts reserve	$2,400,000	$2,400,000	'
Goodwill	2,331,781,000	2,331,781,000	2,331,922,000
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%	'
Goodwill	288,991,000	288,991,000	288,991,000
HEP [Member] | SLC Pipeline [Member]	'	'	'
Ownership Interest By Project Type [Line Items]	'	'	'
Length of pipeline (miles)	'	95	'
SLC Pipeline [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]	'	'	'
Percentage of interest owned In pipeline project	75.00%	'	'
El Dorado [Member]	'	'	'
Ownership Interest By Project Type [Line Items]	'	'	'
Goodwill	1,700,000,000	1,700,000,000	'
Cheyenne [Member]	'	'	'
Ownership Interest By Project Type [Line Items]	'	'	'
Goodwill	$300,000,000	$300,000,000	'
Reporting Unit, Percentage of Fair Value in Excess of Carrying Amount	20.00%	20.00%	'
Scenario, Plan [Member]	'	'	'
Ownership Interest By Project Type [Line Items]	'	'	'
Goodwill, Impaired, Method for Fair Value Determination	'	'0.8	'

Holly_Energy_Partners_Details

Holly Energy Partners (Details) (USD $)	3 Months Ended	9 Months Ended
In Millions, except Share data, unless otherwise specified	Sep. 30, 2013	Sep. 30, 2014
		Customers
Variable Interest Entity [Line Items]	'	'
Sale of Stock, Number of Shares Issued in Transaction	1,875,000	'
Proceeds from Issuance of Common Stock	73.4	'
HEP [Member]	'	'
Variable Interest Entity [Line Items]	'	'
Percentage of general partner interest	'	2.00%
Number of primary customers	'	2
Percentage of revenue Holly Corp represents	'	84.00%
Percentage of ownership in variable interest entity	'	39.00%
Annual contract payment	'	$236.20
Sale of Stock, Number of Shares Issued in Transaction	1,875,000	'

Variable_Interest_Entities_Sab

Variable Interest Entities Sabine Biofuels production facility (Details) (USD $)	9 Months Ended
In Millions, unless otherwise specified	Sep. 30, 2014
Variable Interest Entity [Line Items]	'
Percentage Of Interest Owned In Development Stage Biodiesel Production Facility	50.00%
Carrying Value of Interest Owned In Development Stage Biodiesel Production Facility	$8.40

Financial_Instruments_Estimate

Financial Instruments (Estimated Fair Values Of Debt Instruments) (Details) (USD $)	Sep. 30, 2014	Dec. 31, 2013
In Thousands, unless otherwise specified
Debt Instrument [Line Items]	'	'
Financial instruments, assets at carrying value	$759,483	'
Financial instruments, assets at fair value	759,483	770,114
Derivative Liability, Fair Value, Gross Liability	13,966	65,375
Derivative Asset, Fair Value, Gross Asset	106,514	1,670
Financial Liabilities Fair Value Disclosure	525,281	721,732
Financial instruments liabilities at carrying value	511,824	'
Carrying Amount [Member]	'	'
Debt Instrument [Line Items]	'	'
Financial instruments, assets at carrying value	'	770,114
Financial instruments liabilities at carrying value	'	688,416
Level 1 [Member]	'	'
Debt Instrument [Line Items]	'	'
Financial instruments, assets at fair value	1,848	'
Derivative Liability, Fair Value, Gross Liability	0	'
Financial Liabilities Fair Value Disclosure	'	3,569
Level 1 [Member] | HEP [Member]	'	'
Debt Instrument [Line Items]	'	'
Financial instruments, assets at fair value	0	'
Level 2 [Member]	'	'
Debt Instrument [Line Items]	'	'
Financial instruments, assets at fair value	640,414	763,142
Financial Liabilities Fair Value Disclosure	523,970	675,873
Level 3 [Member]	'	'
Debt Instrument [Line Items]	'	'
Financial instruments, assets at fair value	117,221	6,972
Financial Liabilities Fair Value Disclosure	1,311	42,290
Marketable Securities [Member]	'	'
Debt Instrument [Line Items]	'	'
Financial instruments, assets at carrying value	623,480	'
Financial instruments, assets at fair value	623,480	725,160
Marketable Securities [Member] | Carrying Amount [Member]	'	'
Debt Instrument [Line Items]	'	'
Financial instruments, assets at carrying value	'	725,160
Marketable Securities [Member] | Level 2 [Member]	'	'
Debt Instrument [Line Items]	'	'
Financial instruments, assets at fair value	623,480	725,160
Nymex Futures Contracts [Member]	'	'
Debt Instrument [Line Items]	'	'
Financial instruments, assets at carrying value	1,848	'
Financial instruments, assets at fair value	1,848	'
Financial Liabilities Fair Value Disclosure	'	3,569
Nymex Futures Contracts [Member] | Carrying Amount [Member]	'	'
Debt Instrument [Line Items]	'	'
Financial instruments liabilities at carrying value	'	3,569
Nymex Futures Contracts [Member] | Level 1 [Member]	'	'
Debt Instrument [Line Items]	'	'
Financial instruments, assets at fair value	1,848	'
Nymex Futures Contracts [Member] | Level 1 [Member] | Carrying Amount [Member]	'	'
Debt Instrument [Line Items]	'	'
Financial Liabilities Fair Value Disclosure	'	3,569
Nymex Futures Contracts [Member] | Level 2 [Member]	'	'
Debt Instrument [Line Items]	'	'
Financial instruments, assets at fair value	0	'
Commodity Price Swaps [Member]	'	'
Debt Instrument [Line Items]	'	'
Financial instruments, assets at carrying value	132,610	'
Financial instruments, assets at fair value	132,610	43,284
Financial Liabilities Fair Value Disclosure	59,800	83,349
Financial instruments liabilities at carrying value	59,800	'
Commodity Price Swaps [Member] | Carrying Amount [Member]	'	'
Debt Instrument [Line Items]	'	'
Financial instruments, assets at carrying value	'	43,284
Financial instruments liabilities at carrying value	'	83,349
Commodity Price Swaps [Member] | Level 2 [Member]	'	'
Debt Instrument [Line Items]	'	'
Financial instruments, assets at fair value	15,389	36,312
Financial Liabilities Fair Value Disclosure	58,489	41,059
Commodity Price Swaps [Member] | Level 3 [Member]	'	'
Debt Instrument [Line Items]	'	'
Financial instruments, assets at fair value	117,221	6,972
Financial Liabilities Fair Value Disclosure	1,311	42,290
HEP Interest Rate Swap [Member] | HEP [Member]	'	'
Debt Instrument [Line Items]	'	'
Financial instruments, assets at carrying value	1,545	'
Financial instruments, assets at fair value	1,545	1,670
Financial Liabilities Fair Value Disclosure	1,231	1,814
Financial instruments liabilities at carrying value	1,231	'
HEP Interest Rate Swap [Member] | Carrying Amount [Member] | HEP [Member]	'	'
Debt Instrument [Line Items]	'	'
Financial instruments, assets at carrying value	'	1,670
Financial instruments liabilities at carrying value	'	1,814
HEP Interest Rate Swap [Member] | Level 2 [Member] | HEP [Member]	'	'
Debt Instrument [Line Items]	'	'
Financial instruments, assets at fair value	1,545	1,670
Financial Liabilities Fair Value Disclosure	1,231	1,814
Senior Notes [Member]	'	'
Debt Instrument [Line Items]	'	'
Financial Liabilities Fair Value Disclosure	155,250	161,250
Financial instruments liabilities at carrying value	154,377	'
Senior Notes [Member] | HEP [Member]	'	'
Debt Instrument [Line Items]	'	'
Financial Liabilities Fair Value Disclosure	309,000	471,750
Financial instruments liabilities at carrying value	296,416	'
Senior Notes [Member] | Carrying Amount [Member]	'	'
Debt Instrument [Line Items]	'	'
Financial instruments liabilities at carrying value	'	155,054
Senior Notes [Member] | Carrying Amount [Member] | HEP [Member]	'	'
Debt Instrument [Line Items]	'	'
Financial instruments liabilities at carrying value	'	444,630
Senior Notes [Member] | Level 2 [Member]	'	'
Debt Instrument [Line Items]	'	'
Financial Liabilities Fair Value Disclosure	155,250	161,250
Senior Notes [Member] | Level 2 [Member] | HEP [Member]	'	'
Debt Instrument [Line Items]	'	'
Financial Liabilities Fair Value Disclosure	$309,000	$471,750

Financial_Instruments_Changes_

Financial Instruments (Changes in Level 3 Inputs) (Details) (USD $)	3 Months Ended		9 Months Ended
	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]	'	'	'	'
Hypothetical change to estimated future cash flows attributable to commodity price swaps, percent	'	'	10.00%	'
Estimated change in fair value resulting from hypothetical percentage change in future cash flows attributable to commodity price swaps	'	'	$11,600,000	'
Commodity Contract [Member] | Level 3 [Member]	'	'	'	'
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]	'	'	'	'
Asset (liability) balance at beginning of period	-75,637,000	37,126,000	-35,318,000	-33,658,000
Change in fair value recognized in other comprehensive income	178,511,000	-9,956,000	65,816,000	-8,542,000
Change in Fair Value Recognized in Cost of Product Sold	11,085,000	-17,194,000	12,970,000	30,027,000
Settlements Recognized in Sales and Other Revenues	6,202,000	10,138,000	80,476,000	25,454,000
Settlements Recognized in Cost of Product Sold	-4,251,000	-8,460,000	-8,034,000	-1,627,000
Asset (liability) balance at end of period	$115,910,000	$11,654,000	$115,910,000	$11,654,000

Earnings_Per_Share_Schedule_Of

Earnings Per Share (Schedule Of Earnings Per Share) (Details) (USD $)	3 Months Ended				9 Months Ended
In Thousands, except Per Share data, unless otherwise specified	Sep. 30, 2014		Sep. 30, 2013		Sep. 30, 2014		Sep. 30, 2013
Earnings Per Share [Abstract]	'		'		'		'
Net income attributable to HollyFrontier stockholders	$175,006		$82,290		$503,496		$672,940
Participating Securities Share in Earnings	471		285		1,416		2,447
Net income attributable to common shares	$174,535		$82,005		$502,080		$670,493
Average number of shares of common stock outstanding	197,261		199,098		197,895		201,109
Effect of dilutive variable restricted shares and performance share units	274	[1]	411	[1]	201	[1]	377	[1]
Average number of shares of common stock outstanding assuming dilution	197,535		199,509		198,096		201,486
Basic earnings per share	$0.88		$0.41		$2.54		$3.33
Diluted earnings per share	$0.88		$0.41		$2.53		$3.33
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount	195		251		214		1
[1]	(1) Excludes anti-dilutive restricted and performance share units of: 195,000B 251,000B 214,000B 1,000

StockBased_Compensation_Narrat

Stock-Based Compensation (Narrative) (Details) (USD $)	3 Months Ended		9 Months Ended
In Millions, unless otherwise specified	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]	'	'	'	'
Share-based Compensation Expense	$6	$7.30	$18.20	$22.60
HEP [Member]	'	'	'	'
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]	'	'	'	'
Share-based Compensation Expense	$0.80	$0.70	$2.50	$2.60
Restricted Stock [Member]	'	'	'	'
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]	'	'	'	'
Total unrecognized compensation cost, weighted-average period of recognition, years	'	'	'1 year	'
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 Share Units Member	'	'	'	'
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]	'	'	'	'
Total unrecognized compensation cost, weighted-average period of recognition, years	'	'	'1 year 2 months 13 days	'
Performance Share Units Member | Maximum [Member]	'	'	'	'
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]	'	'	'	'
Share-based Compensation Arrangement Vesting Period	'	'	'3 years	'

StockBased_Compensation_Summar

Stock-Based Compensation (Summary Of Restricted Stock Activity) (Details) (Restricted Stock [Member], USD $)	9 Months Ended
	Sep. 30, 2014
Restricted Stock [Member]	'
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
Total unrecognized compensation cost related to non-vested grants	$9,400,000
Fair value of restricted stock vested	3,500,000
Outstanding at January 1, 2014 (non-vested)	737,562
Granted	73,395
Vesting (transfer/conversion to common stock)	-103,586
Forfeited	-73,940
Outstanding at September 30, 2014 (non-vested)	633,431
Outstanding at January 1, 2014 (non-vested), Weighted Average Grant Date Fair Value	$39.54
Granted, Weighted Average Grant Date Fair Value	$48.20
Vesting and transfer of ownership to recipients, Weighted Average Grant Date Fair Value	$33.71
Forfeited, Weighted Average Grant Date Fair Value, per share	$42.23
Outstanding at September 30, 2014 (non-vested), Weighted Average Grant Date Fair Value	$41.18
Aggregate Intrinsic Value	$27,668,000

StockBased_Compensation_Summar1

Stock-Based Compensation (Summary Of Performance Share Unit Activity) (Details) (USD $)	3 Months Ended	9 Months Ended
In Millions, except Share data, unless otherwise specified	Sep. 30, 2014	Sep. 30, 2014
Performance Shares [Member]	'	'
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]	'	'
Common Stock, Shares, Issued	'	172,231
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period, Fair Value	'	$5.90
Performance Share Units Member	'	'
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]	'	'
Employee Service Share-based Compensation, Nonvested Awards, Compensation Cost Not yet Recognized	$13.90	$13.90
Employee Service Share-based Compensation, Nonvested Awards, Total Compensation Cost Not yet Recognized, Period for Recognition	'	'1 year 2 months 13 days
Outstanding at January 1, 2014 (non-vested)	'	983,610
Granted	'	26,493
Vesting and transfer of ownership to recipients	'	-181,290
Forfeited	'	-109,517
Outstanding at September 30, 2014 (non-vested)	719,296	719,296
Percentage Of Share Units Awarded Ultimately Issued	95.00%	'
Current Estimated Percentage Of Share Units Awarded Ultimately Issued	'	70.00%
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period, Weighted Average Grant Date Fair Value	'	$40.55
Performance Share Units Member | 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%
Performance Share Units Member | 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_and_2

Cash and Cash Equivalents and Investments in Marketable Securities (Narrative) (Details) (USD $)	3 Months Ended	9 Months Ended
In Millions, unless otherwise specified	Sep. 30, 2014	Sep. 30, 2014	Sep. 30, 2013
Schedule of Available-for-sale Securities [Line Items]	'	'	'
Maximum term to maturity from date of purchase (years)	'1 year	'	'
Total Marketable Securities [Member]	'	'	'
Schedule of Available-for-sale Securities [Line Items]	'	'	'
Investment Income, interest income on Marketable Securities	$0.50	$1.70	$1.60

Cash_and_Cash_Equivalents_and_3

Cash and Cash Equivalents and Investments in Marketable Securities (Available-For-Sale Securities) (Details) (USD $)	9 Months Ended	12 Months Ended
In Thousands, unless otherwise specified	Sep. 30, 2014	Dec. 31, 2013
Certificates of Deposit [Member]	'	'
Schedule of Trading Securities and Other Trading Assets [Line Items]	'	'
Available-for-Sale Securities, Amortized Cost	$96,403	$74,802
Available-for-Sale Securities, Gross Unrealized Gain	14	21
Available-for-sale Securities, Gross Unrealized Losses	-5	-1
Available-for-sale Securities, Fair Value (Net Carrying Amount)	96,412	74,822
Commercial Paper [Member]	'	'
Schedule of Trading Securities and Other Trading Assets [Line Items]	'	'
Available-for-Sale Securities, Amortized Cost	76,331	78,216
Available-for-Sale Securities, Gross Unrealized Gain	16	28
Available-for-sale Securities, Gross Unrealized Losses	0	0
Available-for-sale Securities, Fair Value (Net Carrying Amount)	76,347	78,244
Corporate Debt Securities [Member]	'	'
Schedule of Trading Securities and Other Trading Assets [Line Items]	'	'
Available-for-Sale Securities, Amortized Cost	147,039	96,889
Available-for-Sale Securities, Gross Unrealized Gain	10	6
Available-for-sale Securities, Gross Unrealized Losses	-50	-44
Available-for-sale Securities, Fair Value (Net Carrying Amount)	146,999	96,851
US States and Political Subdivisions Debt Securities [Member]	'	'
Schedule of Trading Securities and Other Trading Assets [Line Items]	'	'
Available-for-Sale Securities, Amortized Cost	303,824	475,235
Available-for-Sale Securities, Gross Unrealized Gain	14	49
Available-for-sale Securities, Gross Unrealized Losses	-116	-41
Available-for-sale Securities, Fair Value (Net Carrying Amount)	303,722	475,243
Total Marketable Securities [Member]	'	'
Schedule of Trading Securities and Other Trading Assets [Line Items]	'	'
Available-for-Sale Securities, Amortized Cost	623,597	725,142
Available-for-Sale Securities, Gross Unrealized Gain	54	104
Available-for-sale Securities, Gross Unrealized Losses	-171	-86
Available-for-sale Securities, Fair Value (Net Carrying Amount)	$623,480	$725,160

Inventories_Details

Inventories (Details) (USD $)	Sep. 30, 2014		Dec. 31, 2013
In Thousands, unless otherwise specified
Inventories	'		'
Crude oil	$615,245		$567,281
Other raw materials and unfinished products	183,395	[1]	154,534	[1]
Finished products	692,678	[2]	519,633	[2]
Process chemicals	3,858	[3]	3,504	[3]
Repairs and maintenance supplies and other	84,289		109,295
Inventories, total	$1,579,465		$1,354,247
[1]	Other raw materials and unfinished products include feedstocks and blendstocks, other than crude.
[2]	Finished products include gasolines, jet fuels, diesels, lubricants, asphalts, LPGbs and residual fuels.
[3]	Process chemicals include additives and other chemicals.

Environmental_Details

Environmental (Details) (USD $)	3 Months Ended		9 Months Ended
In Millions, unless otherwise specified	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013	Dec. 31, 2013
Loss Contingencies [Line Items]	'	'	'	'	'
Environmental remediation costs	$0	$1.10	$1.30	$1.90	'
Accrued environmental liability	81	'	81	'	87.8
Estimated time frame to remediate contigency	'	'	'30	'	'
Other Long Term Liabilities [Member]	'	'	'	'	'
Loss Contingencies [Line Items]	'	'	'	'	'
Accrued environmental liability	$67.50	'	$67.50	'	$73.60

Debt_Narrative_Details

Debt (Narrative) (Details) (USD $)

3 Months Ended

9 Months Ended

9 Months Ended

Sep. 30, 2014

Sep. 30, 2013

Sep. 30, 2014

Sep. 30, 2013

Sep. 30, 2014

Dec. 31, 2013

Sep. 30, 2014

Jul. 01, 2014

Jun. 30, 2014

Sep. 30, 2014

Sep. 30, 2014

Dec. 31, 2013

Sep. 30, 2014

Dec. 31, 2013

Sep. 30, 2014

Sep. 30, 2014

Dec. 31, 2013

6.875% Senior Notes Due 2018 [Member]

6.875% Senior Notes Due 2018 [Member]

Holly Frontier Credit Agreement [Member]

Holly Frontier Credit Agreement [Member]

Holly Frontier Credit Agreement [Member]

Plains [Member]

HEP [Member]

HEP [Member]

HEP [Member]

HEP [Member]

HEP [Member]

HEP [Member]

HEP [Member]

Lease [Member]

8.25% Senior Notes Due 2018 [Member]

8.25% Senior Notes Due 2018 [Member]

6.5% Senior Notes Due 2020 [Member]

6.5% Senior Notes Due 2020 [Member]

Letter of Credit [Member]

Holly Energy Partners Credit Agreement [Member]

Holly Energy Partners Credit Agreement [Member]

Debt Instrument [Line Items]

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Maximum borrowing capacity under revolving credit agreement

'

'

'

'

'

'

'

$1,000,000,000

$1,000,000,000

'

'

'

'

'

$50,000,000

$650,000,000

'

Letters of Credit Outstanding, Amount

'

'

'

'

'

'

4,700,000

'

'

'

'

'

'

'

'

'

'

Borrowings outstanding under revolving credit agreement

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

555,000,000

363,000,000

Stated interest rate, senior notes

'

9.88%

'

9.88%

6.88%

'

'

'

'

'

8.25%

'

6.50%

'

'

'

'

Extinguishment of Debt, Amount

'

'

'

301,000,000

'

'

'

'

'

'

156,200,000

'

'

'

'

'

'

Gains (Losses) on Extinguishment of Debt

0

0

7,677,000

22,109,000

'

'

'

'

'

'

'

'

'

'

'

'

'

Redemption Premium

'

'

'

14,200,000

'

'

'

'

'

'

6,200,000

'

'

'

'

'

'

Amortization of Financing Costs and Discounts

'

'

'

7,900,000

'

'

'

'

'

'

1,500,000

'

'

'

'

'

'

Senior notes

'

'

'

'

150,000,000

150,000,000

'

'

'

'

0

150,000,000

300,000,000

300,000,000

'

'

'

Debt Instrument, Face Amount

'

286,800,000

'

286,800,000

'

'

'

'

'

'

150,000,000

'

'

'

'

'

'

Proceeds from sale of storage assets

'

'

'

'

'

'

'

'

'

40,000,000

'

'

'

'

'

'

'

Term of lease, years

'

'

'

'

'

'

'

'

'

'15 years

'

'

'

'

'

'

'

Interest Costs Capitalized

$2,900,000

$2,800,000

$9,000,000

$9,200,000

'

'

'

'

'

'

'

'

'

'

'

'

'

Debt_Carrying_Amounts_Of_LongT

Debt (Carrying Amounts Of Long-Term Debt) (Details) (USD $)	Sep. 30, 2014	Dec. 31, 2013
In Thousands, unless otherwise specified
Debt Instrument [Line Items]	'	'
Total long-term debt	$1,039,396	$997,519
Holly Corporation [Member]	'	'
Debt Instrument [Line Items]	'	'
Total long-term debt	187,980	189,889
6.875% Senior Notes Due 2018 [Member]	'	'
Debt Instrument [Line Items]	'	'
Principal	150,000	150,000
Unamortized Premium	4,377	5,054
Long-term debt carrying amount	154,377	155,054
Holly Financing Obligation [Member]	'	'
Debt Instrument [Line Items]	'	'
Financing obligation	33,603	34,835
HEP [Member]	'	'
Debt Instrument [Line Items]	'	'
Total HEP long-term debt	851,416	807,630
Total long-term debt	851,416	807,630
HEP [Member] | Holly Energy Partners Credit Agreement [Member]	'	'
Debt Instrument [Line Items]	'	'
HEP Credit Agreement	555,000	363,000
HEP [Member] | 8.25% Senior Notes Due 2018 [Member]	'	'
Debt Instrument [Line Items]	'	'
Principal	0	150,000
Unamortized discount	0	-1,297
Long-term debt carrying amount	0	148,703
HEP [Member] | 6.5% Senior Notes Due 2020 [Member]	'	'
Debt Instrument [Line Items]	'	'
Principal	300,000	300,000
Unamortized discount	-3,584	-4,073
Long-term debt carrying amount	$296,416	$295,927

Derivative_Instruments_And_Hed2

Derivative Instruments And Hedging Activities (Narrative) (Details) (USD $)	3 Months Ended	9 Months Ended
In Millions, unless otherwise specified	Sep. 30, 2014	Sep. 30, 2014
Derivative [Line Items]	'	'
Derivative Instruments, Gain (Loss) Reclassified from Accumulated OCI into Income, Period	'1 year	'
Net unrealized gain in accumulated other comprehensive income related to accounting hedges	'	$68.40
Net unrealized gain to be transferred from accumulated other comprehensive income to statement of income	'	76.7
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_Hed3

Derivative Instruments And Hedging Activities (Summary Of Balance Sheet Locations And Related Fair Values Of Outstanding Derivative Instruments) (Details) (USD $)	Sep. 30, 2014	Dec. 31, 2013
In Thousands, unless otherwise specified
Derivative [Line Items]	'	'
Derivative Asset, Fair Value, Gross Asset	$106,514	$1,670
Derivative designated as cash flow hedging instrument asset - gross liability	-31,480	'
Derivative designated as cash flow hedging instrument asset - net asset	75,034	1,670
Derivative Designated as Cash Flow Hedging Instrument Liability - Gross Liability	13,966	65,375
Derivative Designated as Cash Flow Hedging Instrument Liability - Gross Asset	-5,456	-23,679
Derivative designated as Cash Flow Hedging Instrument Liability - Net Liability	8,510	41,696
Derivative Instrument not Designated as Cash Flow Hedging Instrument Asset - Gross Asset	16,173	6,972
Derivative Instrument not Designated as Cash Flow Hedging Instrument Asset - Gross Liability	-3,961	'
Derivative Instrument Not Designated as Cash Flow Hedging Instrument Asset - net Asset	12,212	6,972
Derivative Instrument Not Designated as Cash Flow Hedging Instrument Liability - Gross Liability	11,624	23,335
Derivative Not Designated as Cash Flow Hedging Instruments Liability - Gross Asset	-7,860	-12,611
Derivative Not Designated as Cash Flow Hedging Instruments Liability - Net Liability	3,764	10,724
Derivative Instruments Assets - Net Asset	87,246	8,642
Derivative Instruments Liabilities - Net Liabilities Classified as Current	'	26,843
Derivative Instruments Liabilities - Net Liabilities Classified as Noncurrent	12,274	25,577
Derivative Instruments Liabilities Classified as Liabilities	12,274	52,420
Commodity Contract [Member]	'	'
Derivative [Line Items]	'	'
Derivative Asset, Fair Value, Gross Asset	104,969	'
Derivative designated as cash flow hedging instrument asset - gross liability	-31,480	'
Derivative designated as cash flow hedging instrument asset - net asset	73,489	'
Derivative Designated as Cash Flow Hedging Instrument Liability - Gross Liability	12,735	63,561
Derivative Designated as Cash Flow Hedging Instrument Liability - Gross Asset	-5,456	-23,679
Derivative designated as Cash Flow Hedging Instrument Liability - Net Liability	7,279	39,882
Derivative Instrument not Designated as Cash Flow Hedging Instrument Asset - Gross Asset	14,325	6,972
Derivative Instrument not Designated as Cash Flow Hedging Instrument Asset - Gross Liability	-3,961	'
Derivative Instrument Not Designated as Cash Flow Hedging Instrument Asset - net Asset	10,364	6,972
Derivative Instrument Not Designated as Cash Flow Hedging Instrument Liability - Gross Liability	11,624	19,766
Derivative Not Designated as Cash Flow Hedging Instruments Liability - Gross Asset	-7,860	-12,611
Derivative Not Designated as Cash Flow Hedging Instruments Liability - Net Liability	3,764	7,155
HEP Interest Rate Swap [Member]	'	'
Derivative [Line Items]	'	'
Derivative Asset, Fair Value, Gross Asset	1,545	1,670
Derivative designated as cash flow hedging instrument asset - gross liability	0	'
Derivative designated as cash flow hedging instrument asset - net asset	1,545	1,670
Derivative Designated as Cash Flow Hedging Instrument Liability - Gross Liability	1,231	1,814
Derivative Designated as Cash Flow Hedging Instrument Liability - Gross Asset	0	'
Derivative designated as Cash Flow Hedging Instrument Liability - Net Liability	1,231	1,814
Nymex Futures Contracts [Member]	'	'
Derivative [Line Items]	'	'
Derivative Instrument not Designated as Cash Flow Hedging Instrument Asset - Gross Asset	1,848	'
Derivative Instrument Not Designated as Cash Flow Hedging Instrument Asset - net Asset	1,848	'
Derivative Instrument Not Designated as Cash Flow Hedging Instrument Liability - Gross Liability	0	3,569
Derivative Not Designated as Cash Flow Hedging Instruments Liability - Net Liability	0	3,569
Prepayments And Other [Member]	'	'
Derivative [Line Items]	'	'
Derivative Instruments Assets - Net Asset	84,559	6,972
Other Intangible Assets [Member]	'	'
Derivative [Line Items]	'	'
Derivative Instruments Assets - Net Asset	$2,687	$1,670

Derivative_Instruments_And_Hed4

Derivative Instruments And Hedging Activities Notional Contracts by Derivative Type (Details) (USD $)	3 Months Ended
In Millions, unless otherwise specified	Sep. 30, 2014
economic hedges by derivative type [Line Items]	'
Available-for-sale Securities, Change in Net Unrealized Holding Gain (Loss) before Taxes	$3.50
Commodity WCS Spread [Member]	'
economic hedges by derivative type [Line Items]	'
Economic Hedges Notional Contract Volumes	1,610,000
Commodity Price Swap WTS Spread [Member]	'
economic hedges by derivative type [Line Items]	'
Economic Hedges Notional Contract Volumes	1,825,000
Commodity WTI Long [Member]	'
economic hedges by derivative type [Line Items]	'
Economic Hedges Notional Contract Volumes	365,000
Natural Gas - long [Member]	'
economic hedges by derivative type [Line Items]	'
Economic Hedges Notional Contract Volumes	31,200,000
Natural Gas - Short [Member]	'
economic hedges by derivative type [Line Items]	'
Economic Hedges Notional Contract Volumes	31,200,000
Commodity WTI short [Member]	'
economic hedges by derivative type [Line Items]	'
Economic Hedges Notional Contract Volumes	1,043,000
Maturing in Next Twelve Months [Member] | Commodity WCS Spread [Member]	'
economic hedges by derivative type [Line Items]	'
Economic Hedges Notional Contract Volumes	1,610,000
Maturing in Next Twelve Months [Member] | Natural Gas - long [Member]	'
economic hedges by derivative type [Line Items]	'
Economic Hedges Notional Contract Volumes	2,400,000
Maturing in Next Twelve Months [Member] | Natural Gas - Short [Member]	'
economic hedges by derivative type [Line Items]	'
Economic Hedges Notional Contract Volumes	2,400,000
Maturing in Next Twelve Months [Member] | Commodity WTI short [Member]	'
economic hedges by derivative type [Line Items]	'
Economic Hedges Notional Contract Volumes	939,000
Maturing in Year Two [Member] | Commodity Price Swap WTS Spread [Member]	'
economic hedges by derivative type [Line Items]	'
Economic Hedges Notional Contract Volumes	1,825,000
Maturing in Year Two [Member] | Commodity WTI Long [Member]	'
economic hedges by derivative type [Line Items]	'
Economic Hedges Notional Contract Volumes	365,000
Maturing in Year Two [Member] | Natural Gas - long [Member]	'
economic hedges by derivative type [Line Items]	'
Economic Hedges Notional Contract Volumes	9,600,000
Maturing in Year Two [Member] | Natural Gas - Short [Member]	'
economic hedges by derivative type [Line Items]	'
Economic Hedges Notional Contract Volumes	9,600,000
Maturing in Year Two [Member] | Commodity WTI short [Member]	'
economic hedges by derivative type [Line Items]	'
Economic Hedges Notional Contract Volumes	104,000
Maturing in Year Three [Member] | Natural Gas - long [Member]	'
economic hedges by derivative type [Line Items]	'
Economic Hedges Notional Contract Volumes	9,600,000
Maturing in Year Three [Member] | Natural Gas - Short [Member]	'
economic hedges by derivative type [Line Items]	'
Economic Hedges Notional Contract Volumes	9,600,000
Maturing in Year Four [Member] | Natural Gas - long [Member]	'
economic hedges by derivative type [Line Items]	'
Economic Hedges Notional Contract Volumes	9,600,000
Maturing in Year Four [Member] | Natural Gas - Short [Member]	'
economic hedges by derivative type [Line Items]	'
Economic Hedges Notional Contract Volumes	9,600,000

Derivative_Instruments_And_Hed5

Derivative Instruments And Hedging Activities Interest Rate Swaps (Details) (USD $)	3 Months Ended		9 Months Ended
In Thousands, unless otherwise specified	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013
Derivative [Line Items]	'	'	'	'
Other Comprehensive Income (Loss), Change in Fair Value of Cash Flow Hedge	$5,133	$25,423	$143,857	$42,739
Amortization of unrealized loss attributable to discontinued cash flow hedges	270	270	810	1,479
Derivative Instruments, Gain (Loss) Recognized in Income	13,574	21,208	30,900	-1,632
HEP [Member]	'	'	'	'
Derivative [Line Items]	'	'	'	'
Other Comprehensive Income (Loss), Change in Fair Value of Cash Flow Hedge	553	-1,626	-1,189	1,329
(Gain) Loss Reclassified to Earnings Due to Settlements	556	529	1,647	1,549
Amortization of unrealized loss attributable to discontinued cash flow hedges	'	'	'	849
Unrealized Gain (Loss) on Cash Flow Hedging Instruments	1,109	-1,097	458	3,727
Derivative Instruments, Gain (Loss) Recognized in Income	-556	-529	-1,647	-2,398
HEP Interest Rate Swap [Member] | HEP [Member]	'	'	'	'
Derivative [Line Items]	'	'	'	'
Derivative Instruments, Gain (Loss) Recognized in Income	-556	-529	-1,647	-2,398
Interest Expense [Member] | HEP [Member]	'	'	'	'
Derivative [Line Items]	'	'	'	'
Derivative Instruments, Gain (Loss) Recognized in Income	($556)	($529)	($1,647)	($2,398)

Derivative_Instruments_And_Hed6

Derivative Instruments And Hedging Activities Location of Gain Loss in Income Statement (Details) (USD $)	3 Months Ended		9 Months Ended
In Thousands, unless otherwise specified	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013
Derivative Instruments, Gain (Loss) [Line Items]	'	'	'	'
Gain (Loss) on Economic Hedges, Net	$27,776	($29,672)	$3,182	$458
Cost of Sales [Member]	'	'	'	'
Derivative Instruments, Gain (Loss) [Line Items]	'	'	'	'
Gain (Loss) on Economic Hedges, Net	27,773	-29,515	3,367	5,916
Operating Expense [Member]	'	'	'	'
Derivative Instruments, Gain (Loss) [Line Items]	'	'	'	'
Gain (Loss) on Economic Hedges, Net	$3	($157)	($185)	($5,458)

Derivative_Instruments_And_Hed7

Derivative Instruments And Hedging Activities Derivatives and Hedging Instruments Gains Losses due to Settlements Hedge Ineffectiveness (Details) (USD $)	3 Months Ended		9 Months Ended
In Thousands, unless otherwise specified	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013
Trading Activity, Gains and Losses, Net [Line Items]	'	'	'	'
Derivative Instruments, change in fair value	($9,550)	$5,312	$112,499	$40,644
Gain (Loss) on Fair Value Hedges Recognized in Earnings	14,130	21,737	32,547	766
Gain (Loss) on Fair Value Hedge Ineffectiveness, Net	-4,790	1,246	-5,596	2,873
Sales and other revenues [Member]	'	'	'	'
Trading Activity, Gains and Losses, Net [Line Items]	'	'	'	'
Gain (Loss) on Fair Value Hedges Recognized in Earnings	-6,202	-10,138	-80,475	-25,454
Gain (Loss) on Fair Value Hedge Ineffectiveness, Net	1,498	1,949	1,498	2,143
Cost of Sales [Member]	'	'	'	'
Trading Activity, Gains and Losses, Net [Line Items]	'	'	'	'
Gain (Loss) on Fair Value Hedges Recognized in Earnings	20,776	32,874	111,217	28,271
Gain (Loss) on Fair Value Hedge Ineffectiveness, Net	-6,189	-962	-6,189	730
Operating Expense [Member]	'	'	'	'
Trading Activity, Gains and Losses, Net [Line Items]	'	'	'	'
Gain (Loss) on Fair Value Hedges Recognized in Earnings	-444	-999	1,805	-2,051
Gain (Loss) on Fair Value Hedge Ineffectiveness, Net	-99	259	-905	0
Commodity Contract [Member]	'	'	'	'
Trading Activity, Gains and Losses, Net [Line Items]	'	'	'	'
Change in Unrealized Gain (Loss) on Fair Value Hedging Instruments	4,580	27,049	145,046	41,410
(Gain) Loss Reclassified to Earnings Due to Settlements	-14,400	-22,007	-33,357	-1,396
Amortization Of Discontinued Hedges Reclassified to Earnings	$270	$270	$810	$630

Derivative_Instruments_And_Hed8

Derivative Instruments And Hedging Activities Volumes related to price risk purchase derivatives (Details)	Sep. 30, 2014
	MMBTU
Natural Gas - long [Member]	'
Price Risk Derivatives for Future Purchases Notional Contract Volumes [Line Items]	'
Cash Flow Hedges against Price Risk for Future Purchases	31,200,000
WTI Crude Oil [Member]	'
Price Risk Derivatives for Future Purchases Notional Contract Volumes [Line Items]	'
Volume related to price risk derivative for future purchases	11,418,000
Ultra Low Sulfur Diesel [Member]	'
Price Risk Derivatives for Future Purchases Notional Contract Volumes [Line Items]	'
Volume related to price risk derivative for future purchases	8,106,000
Produced Gasoline Member	'
Price Risk Derivatives for Future Purchases Notional Contract Volumes [Line Items]	'
Volume related to price risk derivative for future purchases	3,312,000
Maturing in Next Twelve Months [Member] | Natural Gas - long [Member]	'
Price Risk Derivatives for Future Purchases Notional Contract Volumes [Line Items]	'
Cash Flow Hedges against Price Risk for Future Purchases	2,400,000
Maturing in Next Twelve Months [Member] | WTI Crude Oil [Member]	'
Price Risk Derivatives for Future Purchases Notional Contract Volumes [Line Items]	'
Volume related to price risk derivative for future purchases	7,038,000
Maturing in Next Twelve Months [Member] | Ultra Low Sulfur Diesel [Member]	'
Price Risk Derivatives for Future Purchases Notional Contract Volumes [Line Items]	'
Volume related to price risk derivative for future purchases	3,726,000
Maturing in Next Twelve Months [Member] | Produced Gasoline Member	'
Price Risk Derivatives for Future Purchases Notional Contract Volumes [Line Items]	'
Volume related to price risk derivative for future purchases	3,312,000
Maturing in Year Two [Member] | Natural Gas - long [Member]	'
Price Risk Derivatives for Future Purchases Notional Contract Volumes [Line Items]	'
Cash Flow Hedges against Price Risk for Future Purchases	9,600,000
Maturing in Year Two [Member] | WTI Crude Oil [Member]	'
Price Risk Derivatives for Future Purchases Notional Contract Volumes [Line Items]	'
Volume related to price risk derivative for future purchases	4,380,000
Maturing in Year Two [Member] | Ultra Low Sulfur Diesel [Member]	'
Price Risk Derivatives for Future Purchases Notional Contract Volumes [Line Items]	'
Volume related to price risk derivative for future purchases	4,380,000
Maturing in Year Three [Member] | Natural Gas - long [Member]	'
Price Risk Derivatives for Future Purchases Notional Contract Volumes [Line Items]	'
Cash Flow Hedges against Price Risk for Future Purchases	9,600,000
Maturing in Year Four [Member] | Natural Gas - long [Member]	'
Price Risk Derivatives for Future Purchases Notional Contract Volumes [Line Items]	'
Cash Flow Hedges against Price Risk for Future Purchases	9,600,000

Equity_Changes_To_Equity_Detai

Equity (Changes To Equity) (Details) (USD $)	3 Months Ended		9 Months Ended
	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014		Sep. 30, 2013
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]	'	'	'		'
Shares Paid for Tax Withholding for Share Based Compensation	'	'	92,048		'
Authorized share repurchase	'	'	$500,000,000		'
Balance at December 31, 2013	'	'	5,999,620,000		'
Net income	187,558,000	88,909,000	536,673,000		698,029,000
Other comprehensive income, after tax	-4,756,000	2,303,000	69,467,000		46,667,000
Payments for Repurchase of Common Stock	'	'	133,150,000		184,947,000
Balance at September 30, 2014	5,974,157,000	'	5,974,157,000		'
Remaining stock repurchase authorization	'	'	'467843450		'
Holly Corporation Stockholders' Equity [Member]	'	'	'		'
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]	'	'	'		'
Balance at December 31, 2013	'	'	5,999,620,000		'
Net income	'	'	503,496,000		'
Dividends	'	'	-485,803,000		'
Distributions to noncontrolling interest holders	'	'	0		'
Other comprehensive income, after tax	'	'	69,189,000		'
Equity-based compensation	'	'	18,235,000		'
Excess tax benefit attributable to equity-based compensation	'	'	4,482,000		'
Payments for Repurchase of Common Stock	'	'	-135,062,000	[1]	'
Purchase of HEP units for restricted grants	'	'	0		'
Other	'	'	0		'
Balance at September 30, 2014	5,974,157,000	'	5,974,157,000		'
Noncontrolling Interest [Member]	'	'	'		'
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]	'	'	'		'
Balance at December 31, 2013	'	'	609,778,000		'
Net income	'	'	33,177,000		'
Dividends	'	'	0		'
Distributions to noncontrolling interest holders	'	'	-58,473,000		'
Other comprehensive income, after tax	'	'	278,000		'
Equity-based compensation	'	'	2,493,000		'
Excess tax benefit attributable to equity-based compensation	'	'	0		'
Payments for Repurchase of Common Stock	'	'	0	[1]	'
Purchase of HEP units for restricted grants	'	'	-1,064,000		'
Other	'	'	502,000		'
Balance at September 30, 2014	586,691,000	'	586,691,000		'
Total Equity [Member]	'	'	'		'
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]	'	'	'		'
Balance at December 31, 2013	'	'	6,609,398,000		'
Net income	'	'	536,673,000		'
Dividends	'	'	-485,803,000		'
Distributions to noncontrolling interest holders	'	'	-58,473,000		'
Other comprehensive income, after tax	'	'	69,467,000		'
Equity-based compensation	'	'	20,728,000		'
Excess tax benefit attributable to equity-based compensation	'	'	4,482,000		'
Payments for Repurchase of Common Stock	'	'	-135,062,000	[1]	'
Purchase of HEP units for restricted grants	'	'	-1,064,000		'
Other	'	'	502,000		'
Balance at September 30, 2014	$6,560,848,000	'	$6,560,848,000		'
[1]	Includes 92,048 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_Los2

Other Comprehensive Income (Loss) (Components And Allocated Tax Effects Of Other Comprehensive Income (Loss)) (Details) (USD $)	3 Months Ended		9 Months Ended
In Thousands, unless otherwise specified	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013
Other Comprehensive Income (Loss) [Abstract]	'	'	'	'
Net unrealized gain (loss) on marketable securities	($165)	$34	($129)	$5
Net unrealized gain on hedging instruments	-8,441	4,215	112,957	44,371
Other Comprehensive Income (Loss), Pension and Other Postretirement Benefit Plans, Net Unamortized Gain (Loss) Arising During Period, before Tax	422	0	333	30,712
Other comprehensive income (loss)	-8,184	4,249	113,161	75,088
Less other comprehensive income attributable to noncontrolling interest	673	-665	278	2,068
Other Comprehensive Income (Loss) attributable to HollyFrontier stockholders	-8,857	4,914	112,883	73,020
Other Comprehensive Income (Loss), Available-for-sale Securities, Tax	-64	13	-50	2
Net unrealized gain (loss) on hedging instruments, tax expense (benefit)	-3,527	1,933	43,616	16,473
Net change in post-retirement benefit obligations, tax expense (benefit)	163	'	128	11,946
Other comprehensive income, tax expense	-3,428	1,946	43,694	28,421
Other comprehensive income attributable to HollyFrontier stockholders, tax expense (benefit)	-3,428	1,946	43,694	28,421
Net unrealized gain on marketable securities, after tax	-101	21	-79	3
Net unrealized gain (loss) on hedging instruments, after tax	-4,914	2,282	69,341	27,898
Net Change in Post-retirement Benefit Obligations, After Tax	259	'	205	18,766
Other comprehensive income, after tax	-4,756	2,303	69,467	46,667
Less other comprehensive income attributable to noncontrolling interest, after tax	673	-665	278	2,068
Other comprehensive income (loss) attributable to HollyFrontier stockholders, after tax	($5,429)	$2,968	$69,189	$44,599

Other_Comprehensive_Income_Los3

Other Comprehensive Income (Loss) (Accumulated Other Comprehensive Loss In Equity) (Details) (USD $)	3 Months Ended		9 Months Ended
In Thousands, unless otherwise specified	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013
Marketable securities	$12	$10	$13	$13
Marketable securities - income tax	5	4	5	5
Gain on Sale of Marketable Securities, Net of Tax	7	6	8	8
Gain (Loss) on Hedging Instruments, Net, Pretax	13,574	21,208	30,900	-1,632
Gain (Loss) on Sale of Derivatives, Income Tax	5,384	8,375	12,345	-69
Gain (Loss) on Hedging Instruments, Net	8,190	12,833	18,555	-1,563
Gain (Loss) on Hedging Instruments - Noncontrolling Interest	337	321	998	1,453
Gain (Loss) on Hedging Instruments - After Tax and NC Interests	8,527	13,154	19,553	-110
Other Comprehensive Income (Loss), Finalization of Pension and Other Postretirement Benefit Plan Valuation, before Tax	0	0	0	-28,986
Other Comprehensive Income (Loss), Finalization of Pension and Other Postretirement Benefit Plan Valuation, Tax	'	'	'	-11,275
Other Comprehensive Income (Loss), Finalization of Pension and Other Postretirement Benefit Plan Valuation, Net of Tax	'	'	'	-17,711
Other Comprehensive Income Loss Post-retirement Healthcare Reclassified Before Tax	'	'	'	-1,726
Other Post-retirement Healthcare Obligation Reclassified, Tax	'	'	'	-671
Other Comprehensive Income (Loss) Post-retirement Benefits Reclassified, Net of Tax	'	'	'	-1,055
Retirement Restoration Plan Loss Reclassified to Net Income	-422	0	-422	0
Other Comprehensive Income (Loss) Retirement Restoration Plan,Tax	-163	'	-163	'
Other Comprehensive Income (Loss) Retirement Restoration Plan Gain (Loss) During Period, Net of Tax	-259	'	-259	'
Other Comprehensive Income (Loss), Reclassifications to Income, Net of Tax	8,275	13,160	19,302	-18,868
Cost of Sales [Member]	'	'	'	'
Other Comprehensive Income (Loss), Finalization of Pension and Other Postretirement Benefit Plan Valuation, before Tax	'	'	'	-2,460
Other Comprehensive Income Loss Post-retirement Healthcare Reclassified Before Tax	'	'	'	-84
Operating Expense [Member]	'	'	'	'
Other Comprehensive Income (Loss), Finalization of Pension and Other Postretirement Benefit Plan Valuation, before Tax	'	'	'	-23,260
Other Comprehensive Income Loss Post-retirement Healthcare Reclassified Before Tax	'	'	'	-1,549
General and Administrative Expense [Member]	'	'	'	'
Other Comprehensive Income (Loss), Finalization of Pension and Other Postretirement Benefit Plan Valuation, before Tax	'	'	'	-3,266
Other Comprehensive Income Loss Post-retirement Healthcare Reclassified Before Tax	'	'	'	-93
HEP [Member]	'	'	'	'
Gain (Loss) on Hedging Instruments, Net, Pretax	-556	-529	-1,647	-2,398
Commodity Contract [Member] | Sales and other revenues [Member]	'	'	'	'
Gain (Loss) on Hedging Instruments, Net, Pretax	-6,202	-10,138	-80,475	-25,454
Commodity Contract [Member] | Cost of Sales [Member]	'	'	'	'
Gain (Loss) on Hedging Instruments, Net, Pretax	20,776	32,874	111,217	28,271
Commodity Contract [Member] | Operating Expense [Member]	'	'	'	'
Gain (Loss) on Hedging Instruments, Net, Pretax	-444	-999	1,805	-2,051
HEP Interest Rate Swap [Member] | HEP [Member]	'	'	'	'
Gain (Loss) on Hedging Instruments, Net, Pretax	($556)	($529)	($1,647)	($2,398)

Other_Comprehensive_Income_Los4

Other Comprehensive Income (Loss) Other Comprehensive Income Balance Components (Details) (USD $)	Sep. 30, 2014	Dec. 31, 2013
In Thousands, unless otherwise specified
Statement of Comprehensive Income [Abstract]	'	'
Unrealized gain on post-retirement benefit obligations	$27,896	$27,691
Unrealized gain on marketable securities	-69	10
Unrealized gain (loss) on hedging activities, net of noncontrolling interest	42,184	-26,879
Accumulated other comprehensive income	$70,011	$822

Postretirement_Plan_Narrative_

Post-retirement Plan (Narrative) (Details) (USD $)	3 Months Ended		9 Months Ended
	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013
Defined Benefit Plan Disclosure [Line Items]	'	'	'	'
Defined Benefit Plan, Recognized Net Gain (Loss) Due to Settlements	'	'	'	($30,893,000)
Net change in post-retirement benefit obligations	0	0	0	28,986,000
Pension Plans, Defined Benefit [Member]	'	'	'	'
Defined Benefit Plan Disclosure [Line Items]	'	'	'	'
Defined Benefit Plan, Transition Costs	$2,600,000	$2,700,000	$8,100,000	$8,500,000

Postretirement_Plan_Net_Period

Post-retirement Plan (Net Periodic Pension Expense) (Details) (USD $)	3 Months Ended		9 Months Ended
In Thousands, unless otherwise specified	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013
Defined Benefit Plan Disclosure [Line Items]	'	'	'	'
Loss on settlement	$0	$0	$0	($28,986)
Other Post-Retirement Healthcare and Other Benefits Plan [Member]	'	'	'	'
Defined Benefit Plan Disclosure [Line Items]	'	'	'	'
Service cost - benefit earned during the period	224	278	672	834
Interest cost on projected benefit obligations	159	159	478	477
Amortization of prior service cost	-1,074	-1,474	-3,222	-4,422
Amortization of net loss	0	31	0	93
Loss on settlement	0	0	0	1,726
Net periodic post-retirement expense (credit)	($691)	($1,006)	($2,072)	($1,292)

Segment_Information_Narrative_

Segment Information (Narrative) (Details) (USD $)	3 Months Ended		9 Months Ended
In Millions, unless otherwise specified	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013
Segment Reporting Information [Line Items]	'	'	'	'
Reportable segments	2	'	2	'
Other Revenue, Net	$14.70	$12.20	$40.40	$37.10
SLC Pipeline [Member]	'	'	'	'
Segment Reporting Information [Line Items]	'	'	'	'
Equity Method Investment, Ownership Percentage	25.00%	'	25.00%	'
UNEV Pipeline [Member]	'	'	'	'
Segment Reporting Information [Line Items]	'	'	'	'
Percentage of interest owned in pipeline project	75.00%	'	'	'

Segment_Information_Schedule_O

Segment Information (Schedule Of Segment Reporting Information) (Details) (USD $)	3 Months Ended		9 Months Ended
In Thousands, unless otherwise specified	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013	Dec. 31, 2013
Segment Reporting Information [Line Items]	'	'	'	'	'
Sales and other revenues	$5,317,555	$5,327,122	$15,481,208	$15,333,759	'
Depreciation and amortization	80,945	82,127	262,883	224,381	'
Income (loss) from operations	302,611	149,750	869,952	1,158,951	'
Capital expenditures	124,364	115,386	369,133	286,189	'
Cash, Cash Equivalents, And Total Investments In Marketable Securities	1,479,506	'	1,479,506	'	1,665,263
Total assets	10,181,770	'	10,181,770	'	10,056,739
Long-term Debt	1,039,396	'	1,039,396	'	997,519
Refining [Member]	'	'	'	'	'
Segment Reporting Information [Line Items]	'	'	'	'	'
Sales and other revenues	5,303,053	5,314,954	15,440,047	15,294,261	'
Depreciation and amortization	63,109	61,553	210,490	172,166	'
Income (loss) from operations	292,132	144,508	835,555	1,145,487	'
Capital expenditures	98,115	92,918	290,392	231,416	'
Cash, Cash Equivalents, And Total Investments In Marketable Securities	3,501	'	3,501	'	1,860
Total assets	7,476,849	'	7,476,849	'	7,094,558
Long-term Debt	0	'	0	'	0
Corporate And Other [Member]	'	'	'	'	'
Segment Reporting Information [Line Items]	'	'	'	'	'
Sales and other revenues	181	257	1,802	1,054	'
Depreciation and amortization	2,965	1,739	7,275	4,426	'
Income (loss) from operations	-28,313	-28,701	-81,670	-87,319	'
Capital expenditures	3,374	8,230	17,084	23,674	'
Cash, Cash Equivalents, And Total Investments In Marketable Securities	1,474,338	'	1,474,338	'	1,657,051
Total assets	1,593,308	'	1,593,308	'	1,881,119
Long-term Debt	187,980	'	187,980	'	189,889
Consolidations And Eliminations [Member]	'	'	'	'	'
Segment Reporting Information [Line Items]	'	'	'	'	'
Sales and other revenues	-67,820	-65,714	-204,818	-190,786	'
Depreciation and amortization	-207	-207	-621	-621	'
Income (loss) from operations	-549	-538	-1,603	-1,564	'
Capital expenditures	0	0	0	0	'
Cash, Cash Equivalents, And Total Investments In Marketable Securities	0	'	0	'	0
Total assets	-307,167	'	-307,167	'	-332,846
Long-term Debt	0	'	0	'	0
HEP [Member]	'	'	'	'	'
Segment Reporting Information [Line Items]	'	'	'	'	'
Sales and other revenues	82,141	77,625	244,177	229,230	'
Depreciation and amortization	15,078	19,042	45,739	48,410	'
Income (loss) from operations	39,341	34,481	117,670	102,347	'
Capital expenditures	22,875	14,238	61,657	31,099	'
Cash, Cash Equivalents, And Total Investments In Marketable Securities	1,667	'	1,667	'	6,352
Total assets	1,418,780	'	1,418,780	'	1,413,908
Long-term Debt	$851,416	'	$851,416	'	$807,630

Supplemental_GuarantorNonGuara2

Supplemental Guarantor/Non-Guarantor Financial Information (Narrative) (Details) (HEP [Member])	9 Months Ended
	Sep. 30, 2014
HEP [Member]	'
Guarantor Obligations [Line Items]	'
Percentage of ownership in variable interest entity	39.00%

Supplemental_GuarantorNonGuara3

Supplemental Guarantor/Non-Guarantor Financial Information Consolidating Balance Sheet (Details) (USD $)	Sep. 30, 2014	Dec. 31, 2013	Sep. 30, 2013	Dec. 31, 2012
In Thousands, unless otherwise specified
Condensed Financial Statements, Captions [Line Items]	'	'	'	'
Cash and cash equivalents	$856,026	$940,103	$1,294,484	$1,757,699
Marketable securities	623,480	725,160	'	'
Accounts receivable, net	690,251	708,802	'	'
Intercompany accounts receivable	0	0	'	'
Inventories	1,579,465	1,354,247	'	'
Income taxes receivable	32,888	109,376	'	'
Prepayments and other	111,623	58,756	'	'
Total current assets	3,893,733	3,896,444	'	'
Properties, plants and equipment, net	3,560,265	3,394,596	'	'
Investment in subsidiaries	0	0	'	'
Intangibles and other assets	2,727,772	2,765,699	'	'
Total assets	10,181,770	10,056,739	'	'
Accounts payable	1,441,115	1,325,376	'	'
Intercompany accounts payable	0	0	'	'
Accrued liabilities	122,933	125,115	'	'
Deferred income tax liabilities	222,701	223,999	'	'
Total current liabilities	1,786,749	1,674,490	'	'
Long-term debt	1,039,396	997,519	'	'
Liability to HEP	0	0	'	'
Deferred income tax liabilities	659,666	616,842	'	'
Other long-term liabilities	135,111	158,490	'	'
Investment in HEP	0	0	'	'
Equity b HollyFrontier	5,974,157	5,999,620	'	'
Equity b noncontrolling interest	586,691	609,778	'	'
Total liabilities and equity	10,181,770	10,056,739	'	'
Parent Company [Member]	'	'	'	'
Condensed Financial Statements, Captions [Line Items]	'	'	'	'
Cash and cash equivalents	850,727	931,920	1,283,263	1,748,808
Marketable securities	623,480	725,160	'	'
Accounts receivable, net	9,752	6,095	'	'
Intercompany accounts receivable	0	0	'	'
Inventories	0	0	'	'
Income taxes receivable	32,888	109,376	'	'
Prepayments and other	9,920	21,843	'	'
Total current assets	1,526,767	1,794,394	'	'
Properties, plants and equipment, net	32,525	30,007	'	'
Investment in subsidiaries	6,707,737	5,722,025	'	'
Intangibles and other assets	23,823	23,034	'	'
Total assets	8,290,852	7,569,460	'	'
Accounts payable	15,748	16,704	'	'
Intercompany accounts payable	1,167,913	463,530	'	'
Accrued liabilities	51,334	43,254	'	'
Deferred income tax liabilities	222,701	223,999	'	'
Total current liabilities	1,457,696	747,487	'	'
Long-term debt	179,377	180,054	'	'
Liability to HEP	0	0	'	'
Deferred income tax liabilities	654,355	611,555	'	'
Other long-term liabilities	31,253	35,874	'	'
Investment in HEP	0	0	'	'
Equity b HollyFrontier	5,968,171	5,994,490	'	'
Equity b noncontrolling interest	0	0	'	'
Total liabilities and equity	8,290,852	7,569,460	'	'
Guarantor Restricted Subsidiaries [Member]	'	'	'	'
Condensed Financial Statements, Captions [Line Items]	'	'	'	'
Cash and cash equivalents	3,474	1,817	0	3,652
Marketable securities	0	0	'	'
Accounts receivable, net	675,673	698,109	'	'
Intercompany accounts receivable	788,868	149,907	'	'
Inventories	1,577,672	1,352,656	'	'
Income taxes receivable	0	0	'	'
Prepayments and other	107,367	45,413	'	'
Total current assets	3,153,054	2,247,902	'	'
Properties, plants and equipment, net	2,774,100	2,633,739	'	'
Investment in subsidiaries	270,685	216,687	'	'
Intangibles and other assets	2,344,385	2,380,268	'	'
Total assets	8,542,224	7,478,596	'	'
Accounts payable	1,444,787	1,323,603	'	'
Intercompany accounts payable	0	0	'	'
Accrued liabilities	53,302	63,181	'	'
Deferred income tax liabilities	0	0	'	'
Total current liabilities	1,498,089	1,386,784	'	'
Long-term debt	33,603	34,835	'	'
Liability to HEP	236,305	245,536	'	'
Deferred income tax liabilities	0	0	'	'
Other long-term liabilities	66,490	89,416	'	'
Investment in HEP	0	0	'	'
Equity b HollyFrontier	6,707,737	5,722,025	'	'
Equity b noncontrolling interest	0	0	'	'
Total liabilities and equity	8,542,224	7,478,596	'	'
Non Guarantor Restricted Subsidiaries [Member]	'	'	'	'
Condensed Financial Statements, Captions [Line Items]	'	'	'	'
Cash and cash equivalents	158	14	1	2
Marketable securities	0	0	'	'
Accounts receivable, net	3,358	8,075	'	'
Intercompany accounts receivable	379,045	313,623	'	'
Inventories	0	0	'	'
Income taxes receivable	0	0	'	'
Prepayments and other	0	0	'	'
Total current assets	382,561	321,712	'	'
Properties, plants and equipment, net	855	24	'	'
Investment in subsidiaries	0	0	'	'
Intangibles and other assets	25,000	25,000	'	'
Total assets	408,416	346,736	'	'
Accounts payable	0	383	'	'
Intercompany accounts payable	0	0	'	'
Accrued liabilities	1,161	795	'	'
Deferred income tax liabilities	0	0	'	'
Total current liabilities	1,161	1,178	'	'
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	136,570	128,871	'	'
Equity b HollyFrontier	270,685	216,687	'	'
Equity b noncontrolling interest	0	0	'	'
Total liabilities and equity	408,416	346,736	'	'
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	-1,167,913	-463,530	'	'
Inventories	0	0	'	'
Income taxes receivable	0	0	'	'
Prepayments and other	0	0	'	'
Total current assets	-1,167,913	-463,530	'	'
Properties, plants and equipment, net	0	0	'	'
Investment in subsidiaries	-6,978,422	-5,938,712	'	'
Intangibles and other assets	-25,000	-25,000	'	'
Total assets	-8,171,335	-6,427,242	'	'
Accounts payable	0	0	'	'
Intercompany accounts payable	-1,167,913	-463,530	'	'
Accrued liabilities	0	0	'	'
Deferred income tax liabilities	0	0	'	'
Total current liabilities	-1,167,913	-463,530	'	'
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 b HollyFrontier	-6,978,422	-5,938,712	'	'
Equity b noncontrolling interest	0	0	'	'
Total liabilities and equity	-8,171,335	-6,427,242	'	'
Holly Frontier Corp. Before Consolidation Of HEP [Member]	'	'	'	'
Condensed Financial Statements, Captions [Line Items]	'	'	'	'
Cash and cash equivalents	854,359	933,751	1,283,264	1,752,462
Marketable securities	623,480	725,160	'	'
Accounts receivable, net	688,783	712,279	'	'
Intercompany accounts receivable	0	0	'	'
Inventories	1,577,672	1,352,656	'	'
Income taxes receivable	32,888	109,376	'	'
Prepayments and other	117,287	67,256	'	'
Total current assets	3,894,469	3,900,478	'	'
Properties, plants and equipment, net	2,807,480	2,663,770	'	'
Investment in subsidiaries	0	0	'	'
Intangibles and other assets	2,368,208	2,403,302	'	'
Total assets	9,070,157	8,967,550	'	'
Accounts payable	1,460,535	1,340,690	'	'
Intercompany accounts payable	0	0	'	'
Accrued liabilities	105,797	107,230	'	'
Deferred income tax liabilities	222,701	223,999	'	'
Total current liabilities	1,789,033	1,671,919	'	'
Long-term debt	187,980	189,889	'	'
Liability to HEP	236,305	245,536	'	'
Deferred income tax liabilities	654,355	611,555	'	'
Other long-term liabilities	97,743	125,290	'	'
Investment in HEP	136,570	128,871	'	'
Equity b HollyFrontier	5,968,171	5,994,490	'	'
Equity b noncontrolling interest	0	0	'	'
Total liabilities and equity	9,070,157	8,967,550	'	'
Non-Guarantor Non-Restricted Subsidiaries (HEP Segment) [Member]	'	'	'	'
Condensed Financial Statements, Captions [Line Items]	'	'	'	'
Cash and cash equivalents	1,667	6,352	11,220	5,237
Marketable securities	0	0	'	'
Accounts receivable, net	35,972	34,736	'	'
Intercompany accounts receivable	0	0	'	'
Inventories	1,793	1,591	'	'
Income taxes receivable	0	0	'	'
Prepayments and other	2,626	2,283	'	'
Total current assets	42,058	44,962	'	'
Properties, plants and equipment, net	1,016,223	1,004,975	'	'
Investment in subsidiaries	0	0	'	'
Intangibles and other assets	360,499	363,970	'	'
Total assets	1,418,780	1,413,907	'	'
Accounts payable	15,084	22,898	'	'
Intercompany accounts payable	0	0	'	'
Accrued liabilities	25,426	28,668	'	'
Deferred income tax liabilities	0	0	'	'
Total current liabilities	40,510	51,566	'	'
Long-term debt	851,416	807,630	'	'
Liability to HEP	0	0	'	'
Deferred income tax liabilities	5,311	5,287	'	'
Other long-term liabilities	39,446	35,918	'	'
Investment in HEP	0	0	'	'
Equity b HollyFrontier	386,255	416,018	'	'
Equity b noncontrolling interest	95,842	97,488	'	'
Total liabilities and equity	1,418,780	1,413,907	'	'
Eliminations [Member]	'	'	'	'
Condensed Financial Statements, Captions [Line Items]	'	'	'	'
Cash and cash equivalents	0	0	0	0
Marketable securities	0	0	'	'
Accounts receivable, net	-34,504	-38,213	'	'
Intercompany accounts receivable	0	0	'	'
Inventories	0	0	'	'
Income taxes receivable	0	0	'	'
Prepayments and other	-8,290	-10,783	'	'
Total current assets	-42,794	-48,996	'	'
Properties, plants and equipment, net	-263,438	-274,149	'	'
Investment in subsidiaries	0	0	'	'
Intangibles and other assets	-935	-1,573	'	'
Total assets	-307,167	-324,718	'	'
Accounts payable	-34,504	-38,212	'	'
Intercompany accounts payable	0	0	'	'
Accrued liabilities	-8,290	-10,783	'	'
Deferred income tax liabilities	0	0	'	'
Total current liabilities	-42,794	-48,995	'	'
Long-term debt	0	0	'	'
Liability to HEP	-236,305	-245,536	'	'
Deferred income tax liabilities	0	0	'	'
Other long-term liabilities	-2,078	-2,718	'	'
Investment in HEP	-136,570	-128,871	'	'
Equity b HollyFrontier	-380,269	-410,888	'	'
Equity b noncontrolling interest	490,849	512,290	'	'
Total liabilities and equity	($307,167)	($324,718)	'	'

Supplemental_GuarantorNonGuara4

Supplemental Guarantor/Non-Guarantor Financial Information Consolidating Statement of Income (Details) (USD $)	3 Months Ended		9 Months Ended
In Thousands, unless otherwise specified	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013
Condensed Financial Statements, Captions [Line Items]	'	'	'	'
Sales and other revenues	$5,317,555	$5,327,122	$15,481,208	$15,333,759
Cost of products sold	4,625,893	4,809,990	13,439,359	13,059,333
Operating expenses	280,957	256,318	826,577	798,959
General and administrative	27,149	28,937	82,437	92,135
Depreciation and amortization	80,945	82,127	262,883	224,381
Total operating costs and expenses	5,014,944	5,177,372	14,611,256	14,174,808
Income (loss) from operations	302,611	149,750	869,952	1,158,951
Earnings (loss) of equity method investments	-1,247	159	-2,956	-871
Interest income (expense)	-10,034	-12,472	-29,928	-51,277
Loss on sale of assets	-556	0	-556	0
Loss on early extinguishment of debt	0	0	-7,677	-22,109
Nonoperating Income (Expense)	-11,837	-12,313	-41,117	-74,257
Income before income taxes	290,774	137,437	828,835	1,084,694
Income tax provision	103,216	48,528	292,162	386,665
Net income	187,558	88,909	536,673	698,029
Less net income attributable to noncontrolling interest	12,552	6,619	33,177	25,089
Net income attributable to HollyFrontier stockholders	175,006	82,290	503,496	672,940
Comprehensive income attributable to HollyFrontier stockholders	169,577	85,258	572,685	717,540
Parent Company [Member]	'	'	'	'
Condensed Financial Statements, Captions [Line Items]	'	'	'	'
Sales and other revenues	103	146	383	777
Cost of products sold	0	0	0	0
Operating expenses	0	0	0	0
General and administrative	24,904	25,995	70,354	80,368
Depreciation and amortization	2,055	1,496	5,855	3,822
Total operating costs and expenses	26,959	27,491	76,209	84,190
Income (loss) from operations	-26,856	-27,345	-75,826	-83,413
Earnings (loss) of equity method investments	305,736	158,437	871,883	1,178,587
Interest income (expense)	-1,227	-782	-2,024	-15,459
Loss on sale of assets	0	'	0	'
Loss on early extinguishment of debt	'	'	0	-22,109
Nonoperating Income (Expense)	304,509	157,655	869,859	1,141,019
Income before income taxes	277,653	130,310	794,033	1,057,606
Income tax provision	103,174	48,488	292,017	386,225
Net income	174,479	81,822	502,016	671,381
Less net income attributable to noncontrolling interest	0	0	0	0
Net income attributable to HollyFrontier stockholders	174,479	81,822	502,016	671,381
Comprehensive income attributable to HollyFrontier stockholders	169,050	84,790	571,205	715,981
Guarantor Restricted Subsidiaries [Member]	'	'	'	'
Condensed Financial Statements, Captions [Line Items]	'	'	'	'
Sales and other revenues	5,303,131	5,315,037	15,440,531	15,294,447
Cost of products sold	4,692,587	4,874,603	13,640,897	13,246,883
Operating expenses	255,871	234,987	754,798	730,284
General and administrative	530	422	4,038	2,827
Depreciation and amortization	66,832	65,195	221,999	182,858
Total operating costs and expenses	5,015,820	5,175,207	14,621,732	14,162,852
Income (loss) from operations	287,311	139,830	818,799	1,131,595
Earnings (loss) of equity method investments	17,021	16,207	47,589	40,413
Interest income (expense)	1,962	2,400	6,051	6,579
Loss on sale of assets	-556	'	-556	'
Loss on early extinguishment of debt	'	'	0	0
Nonoperating Income (Expense)	18,427	18,607	53,084	46,992
Income before income taxes	305,738	158,437	871,883	1,178,587
Income tax provision	0	0	0	0
Net income	305,738	158,437	871,883	1,178,587
Less net income attributable to noncontrolling interest	0	0	0	0
Net income attributable to HollyFrontier stockholders	305,738	158,437	871,883	1,178,587
Comprehensive income attributable to HollyFrontier stockholders	296,622	163,317	984,562	1,220,890
Non Guarantor Restricted Subsidiaries [Member]	'	'	'	'
Condensed Financial Statements, Captions [Line Items]	'	'	'	'
Sales and other revenues	0	28	935	91
Cost of products sold	0	0	0	0
Operating expenses	0	0	0	0
General and administrative	36	105	112	193
Depreciation and amortization	0	0	0	0
Total operating costs and expenses	36	105	112	193
Income (loss) from operations	-36	-77	823	-102
Earnings (loss) of equity method investments	19,040	16,822	51,455	43,215
Interest income (expense)	144	138	417	409
Loss on sale of assets	0	'	0	'
Loss on early extinguishment of debt	'	'	0	0
Nonoperating Income (Expense)	19,184	16,960	51,872	43,624
Income before income taxes	19,148	16,883	52,695	43,522
Income tax provision	0	0	0	0
Net income	19,148	16,883	52,695	43,522
Less net income attributable to noncontrolling interest	0	0	0	0
Net income attributable to HollyFrontier stockholders	19,148	16,883	52,695	43,522
Comprehensive income attributable to HollyFrontier stockholders	19,584	16,450	52,875	45,181
Eliminations [Member]	'	'	'	'
Condensed Financial Statements, Captions [Line Items]	'	'	'	'
Sales and other revenues	0	0	0	0
Cost of products sold	0	0	0	0
Operating expenses	0	0	0	0
General and administrative	-587	0	0	0
Depreciation and amortization	587	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	-324,884	-175,320	-924,578	-1,222,109
Interest income (expense)	0	0	0	0
Loss on sale of assets	0	'	0	'
Loss on early extinguishment of debt	'	'	0	0
Nonoperating Income (Expense)	-324,884	-175,320	-924,578	-1,222,109
Income before income taxes	-324,884	-175,320	-924,578	-1,222,109
Income tax provision	0	0	0	0
Net income	-324,884	-175,320	-924,578	-1,222,109
Less net income attributable to noncontrolling interest	0	0	0	0
Net income attributable to HollyFrontier stockholders	-324,884	-175,320	-924,578	-1,222,109
Comprehensive income attributable to HollyFrontier stockholders	-316,206	-179,767	-1,037,437	-1,266,071
Holly Frontier Corp. Before Consolidation Of HEP [Member]	'	'	'	'
Condensed Financial Statements, Captions [Line Items]	'	'	'	'
Sales and other revenues	5,303,234	5,315,211	15,441,849	15,295,315
Cost of products sold	4,692,587	4,874,603	13,640,897	13,246,883
Operating expenses	255,871	234,987	754,798	730,284
General and administrative	24,883	26,522	74,504	83,388
Depreciation and amortization	69,474	66,691	227,854	186,680
Total operating costs and expenses	5,042,815	5,202,803	14,698,053	14,247,235
Income (loss) from operations	260,419	112,408	743,796	1,048,080
Earnings (loss) of equity method investments	16,913	16,146	46,349	40,106
Interest income (expense)	879	1,756	4,444	-8,471
Loss on sale of assets	-556	'	-556	'
Loss on early extinguishment of debt	'	'	0	-22,109
Nonoperating Income (Expense)	17,236	17,902	50,237	9,526
Income before income taxes	277,655	130,310	794,033	1,057,606
Income tax provision	103,174	48,488	292,017	386,225
Net income	174,481	81,822	502,016	671,381
Less net income attributable to noncontrolling interest	0	0	0	0
Net income attributable to HollyFrontier stockholders	174,481	81,822	502,016	671,381
Comprehensive income attributable to HollyFrontier stockholders	169,050	84,790	571,205	715,981
Non-Guarantor Non-Restricted Subsidiaries (HEP Segment) [Member]	'	'	'	'
Condensed Financial Statements, Captions [Line Items]	'	'	'	'
Sales and other revenues	82,141	77,625	244,177	229,230
Cost of products sold	0	0	0	0
Operating expenses	25,456	21,687	72,835	69,726
General and administrative	2,266	2,415	7,933	8,747
Depreciation and amortization	15,078	19,042	45,739	48,410
Total operating costs and expenses	42,800	43,144	126,507	126,883
Income (loss) from operations	39,341	34,481	117,670	102,347
Earnings (loss) of equity method investments	880	835	2,150	2,238
Interest income (expense)	-8,585	-11,812	-27,365	-35,818
Loss on sale of assets	0	'	0	'
Loss on early extinguishment of debt	'	'	-7,677	0
Nonoperating Income (Expense)	-7,705	-10,977	-32,892	-33,580
Income before income taxes	31,636	23,504	84,778	68,767
Income tax provision	42	40	145	440
Net income	31,594	23,464	84,633	68,327
Less net income attributable to noncontrolling interest	1,509	1,172	6,562	5,192
Net income attributable to HollyFrontier stockholders	30,085	22,292	78,071	63,135
Comprehensive income attributable to HollyFrontier stockholders	30,520	21,859	78,250	64,794
Eliminations [Member]	'	'	'	'
Condensed Financial Statements, Captions [Line Items]	'	'	'	'
Sales and other revenues	-67,820	-65,714	-204,818	-190,786
Cost of products sold	-66,694	-64,613	-201,538	-187,550
Operating expenses	-370	-356	-1,056	-1,051
General and administrative	0	0	0	0
Depreciation and amortization	-3,607	-3,606	-10,710	-10,709
Total operating costs and expenses	-70,671	-68,575	-213,304	-199,310
Income (loss) from operations	2,851	2,861	8,486	8,524
Earnings (loss) of equity method investments	-19,040	-16,822	-51,455	-43,215
Interest income (expense)	-2,328	-2,416	-7,007	-6,988
Loss on sale of assets	0	'	0	'
Loss on early extinguishment of debt	'	'	0	0
Nonoperating Income (Expense)	-21,368	-19,238	-58,462	-50,203
Income before income taxes	-18,517	-16,377	-49,976	-41,679
Income tax provision	0	0	0	0
Net income	-18,517	-16,377	-49,976	-41,679
Less net income attributable to noncontrolling interest	11,043	5,447	26,615	19,897
Net income attributable to HollyFrontier stockholders	-29,560	-21,824	-76,591	-61,576
Comprehensive income attributable to HollyFrontier stockholders	($29,993)	($21,391)	($76,770)	($63,235)

Supplemental_GuarantorNonGuara5

Supplemental Guarantor/Non-Guarantor Financial Information Consolidating Statement of Cash Flows (Details) (USD $)	9 Months Ended
In Thousands, unless otherwise specified	Sep. 30, 2014	Sep. 30, 2013
Condensed Financial Statements, Captions [Line Items]	'	'
Cash flows from operating activities	$805,933	$802,163
Additions to properties, plants and equipment	-307,476	-255,090
Payments to Acquire Businesses, Net of Cash Acquired	0	11,301
Proceeds from sale of assets	14,711	5,802
Investment in Sabine Biofuels	-5,000	-3,000
Net repayment from (advances to) Sabine Biofuels	10,021	-11,040
Net repayment from (advances to) Sabine Biofuels	'	11,040
Purchases of marketable securities	-762,224	-672,701
Sales and maturities of marketable securities	863,769	646,301
Net Advances to Parent	0	0
Net cash used for investing activities	-247,856	-332,128
Net repayments under credit agreement b HEP	'	56,000
Net borrowings under credit agreement b HEP	-192,000	'
Redemption of Senior Notes - HEP	0	-300,973
Proceeds from common unit offerings	0	146,888
Principal tender on senior notes - HEP	-156,188	'
Purchase of treasury stock	-133,150	-184,947
Contribution from General Partner	'	0
Dividends	-485,766	-485,411
Excess tax benefit from equity based compensation	4,482	2,739
Deferred financing costs and other	-3,995	668
Net advances from subsidiaries	0	0
Net cash provided by (used for) financing activities	-642,154	-933,250
Increase (decrease) for the period	-84,077	-463,215
Beginning of period	940,103	1,757,699
End of period	856,026	1,294,484
Parent Company [Member]	'	'
Condensed Financial Statements, Captions [Line Items]	'	'
Cash flows from operating activities	-260,533	-377,762
Additions to properties, plants and equipment	-8,373	-8,056
Proceeds from sale of assets	'	0
Investment in Sabine Biofuels	0	0
Net repayment from (advances to) Sabine Biofuels	0	'
Net repayment from (advances to) Sabine Biofuels	'	0
Purchases of marketable securities	-762,224	-672,701
Sales and maturities of marketable securities	863,769	646,301
Net Advances to Parent	0	0
Net cash used for investing activities	93,172	-34,456
Net borrowings under credit agreement b HEP	0	'
Redemption of Senior Notes - HEP	'	-300,973
Principal tender on senior notes - HEP	0	'
Purchase of treasury stock	-133,150	-184,947
Contribution from General Partner	'	0
Dividends	-485,766	-485,411
Distributions to noncontrolling interest	0	0
Excess tax benefit from equity based compensation	4,482	2,739
Purchase of units for restricted grants - HEP	0	'
Deferred financing costs and other	3,257	0
Net advances from subsidiaries	703,859	841,821
Net cash provided by (used for) financing activities	86,168	-53,327
Increase (decrease) for the period	-81,193	-465,545
Beginning of period	931,920	1,748,808
End of period	850,727	1,283,263
Guarantor Restricted Subsidiaries [Member]	'	'
Condensed Financial Statements, Captions [Line Items]	'	'
Cash flows from operating activities	930,722	1,066,429
Additions to properties, plants and equipment	-298,272	-247,034
Proceeds from sale of assets	'	-3,321
Investment in Sabine Biofuels	-5,000	-3,000
Net repayment from (advances to) Sabine Biofuels	10,021	'
Net repayment from (advances to) Sabine Biofuels	'	11,040
Purchases of marketable securities	0	0
Sales and maturities of marketable securities	0	0
Net Advances to Parent	-649,294	-801,939
Net cash used for investing activities	-927,834	-1,070,993
Net borrowings under credit agreement b HEP	0	'
Redemption of Senior Notes - HEP	'	0
Proceeds from common unit offerings	'	0
Principal tender on senior notes - HEP	0	'
Purchase of treasury stock	0	0
Contribution from General Partner	'	0
Dividends	0	0
Distributions to noncontrolling interest	0	0
Excess tax benefit from equity based compensation	0	0
Purchase of units for restricted grants - HEP	0	'
Deferred financing costs and other	1,231	912
Net advances from subsidiaries	0	0
Net cash provided by (used for) financing activities	-1,231	912
Increase (decrease) for the period	1,657	-3,652
Beginning of period	1,817	3,652
End of period	3,474	0
Non Guarantor Restricted Subsidiaries [Member]	'	'
Condensed Financial Statements, Captions [Line Items]	'	'
Cash flows from operating activities	55,047	41,380
Additions to properties, plants and equipment	-831	0
Proceeds from sale of assets	'	0
Investment in Sabine Biofuels	0	0
Net repayment from (advances to) Sabine Biofuels	0	'
Net repayment from (advances to) Sabine Biofuels	'	0
Purchases of marketable securities	0	0
Sales and maturities of marketable securities	0	0
Net Advances to Parent	-54,565	-39,882
Net cash used for investing activities	-55,396	-39,882
Net borrowings under credit agreement b HEP	0	'
Redemption of Senior Notes - HEP	'	0
Proceeds from common unit offerings	'	0
Principal tender on senior notes - HEP	0	'
Purchase of treasury stock	0	0
Contribution from General Partner	'	1,499
Dividends	0	0
Distributions to noncontrolling interest	0	0
Excess tax benefit from equity based compensation	0	0
Purchase of units for restricted grants - HEP	0	'
Deferred financing costs and other	-493	0
Net advances from subsidiaries	0	0
Net cash provided by (used for) financing activities	493	-1,499
Increase (decrease) for the period	144	-1
Beginning of period	14	2
End of period	158	1
Eliminations [Member]	'	'
Condensed Financial Statements, Captions [Line Items]	'	'
Cash flows from operating activities	0	0
Additions to properties, plants and equipment	0	0
Payments to Acquire Businesses, Net of Cash Acquired	'	0
Proceeds from sale of assets	0	0
Investment in Sabine Biofuels	0	0
Net repayment from (advances to) Sabine Biofuels	0	'
Net repayment from (advances to) Sabine Biofuels	'	0
Purchases of marketable securities	0	0
Sales and maturities of marketable securities	0	0
Net Advances to Parent	703,859	841,821
Net cash used for investing activities	703,859	841,821
Net repayments under credit agreement b HEP	'	0
Net borrowings under credit agreement b HEP	0	'
Redemption of Senior Notes - HEP	'	0
Proceeds from common unit offerings	'	0
Principal tender on senior notes - HEP	0	'
Purchase of treasury stock	0	0
Contribution from General Partner	'	0
Dividends	0	0
Distributions to noncontrolling interest	0	0
Excess tax benefit from equity based compensation	0	0
Purchase of units for restricted grants - HEP	0	0
Deferred financing costs and other	0	0
Net advances from subsidiaries	703,859	841,821
Net cash provided by (used for) financing activities	-703,859	-841,821
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	725,236	730,047
Additions to properties, plants and equipment	-307,476	-255,090
Proceeds from sale of assets	'	-3,321
Investment in Sabine Biofuels	-5,000	-3,000
Net repayment from (advances to) Sabine Biofuels	10,021	'
Net repayment from (advances to) Sabine Biofuels	'	11,040
Purchases of marketable securities	-762,224	-672,701
Sales and maturities of marketable securities	863,769	646,301
Net Advances to Parent	0	0
Net cash used for investing activities	-186,199	-303,510
Net borrowings under credit agreement b HEP	0	'
Redemption of Senior Notes - HEP	'	-300,973
Proceeds from common unit offerings	'	73,444
Principal tender on senior notes - HEP	0	'
Purchase of treasury stock	-133,150	-184,947
Contribution from General Partner	'	1,499
Dividends	-485,766	-485,411
Distributions to noncontrolling interest	0	0
Excess tax benefit from equity based compensation	4,482	2,739
Purchase of units for restricted grants - HEP	0	'
Deferred financing costs and other	3,995	912
Net advances from subsidiaries	0	0
Net cash provided by (used for) financing activities	-618,429	-895,735
Increase (decrease) for the period	-79,392	-469,198
Beginning of period	933,751	1,752,462
End of period	854,359	1,283,264
Non-Guarantor Non-Restricted Subsidiaries (HEP Segment) [Member]	'	'
Condensed Financial Statements, Captions [Line Items]	'	'
Cash flows from operating activities	140,154	124,922
Additions to properties, plants and equipment	0	-31,099
Payments to Acquire Businesses, Net of Cash Acquired	'	0
Proceeds from sale of assets	'	-2,481
Investment in Sabine Biofuels	0	0
Net repayment from (advances to) Sabine Biofuels	0	'
Net repayment from (advances to) Sabine Biofuels	'	0
Purchases of marketable securities	0	0
Sales and maturities of marketable securities	0	0
Net Advances to Parent	0	0
Net cash used for investing activities	-61,657	-28,618
Net repayments under credit agreement b HEP	'	56,000
Net borrowings under credit agreement b HEP	-192,000	'
Redemption of Senior Notes - HEP	'	0
Proceeds from common unit offerings	'	73,444
Principal tender on senior notes - HEP	-156,188	'
Purchase of treasury stock	0	0
Contribution from General Partner	'	1,499
Dividends	0	0
Distributions to noncontrolling interest	-117,930	-105,641
Excess tax benefit from equity based compensation	0	0
Purchase of units for restricted grants - HEP	-1,064	-3,379
Deferred financing costs and other	'	-244
Net advances from subsidiaries	0	0
Net cash provided by (used for) financing activities	-83,182	-90,321
Increase (decrease) for the period	-4,685	5,983
Beginning of period	6,352	5,237
End of period	1,667	11,220
Eliminations [Member]	'	'
Condensed Financial Statements, Captions [Line Items]	'	'
Cash flows from operating activities	-59,457	-52,806
Additions to properties, plants and equipment	0	0
Proceeds from sale of assets	'	0
Investment in Sabine Biofuels	0	0
Net repayment from (advances to) Sabine Biofuels	0	'
Net repayment from (advances to) Sabine Biofuels	'	0
Purchases of marketable securities	0	0
Sales and maturities of marketable securities	0	0
Net Advances to Parent	0	0
Net cash used for investing activities	0	0
Redemption of Senior Notes - HEP	'	0
Principal tender on senior notes - HEP	0	'
Purchase of treasury stock	0	0
Contribution from General Partner	'	0
Dividends	0	0
Distributions to noncontrolling interest	59,457	52,806
Excess tax benefit from equity based compensation	0	0
Purchase of units for restricted grants - HEP	0	0
Deferred financing costs and other	0	0
Net advances from subsidiaries	0	0
Net cash provided by (used for) financing activities	59,457	52,806
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	-61,657	-31,099
Payments to Acquire Businesses, Net of Cash Acquired	'	11,301
Proceeds from sale of assets	0	'
Proceeds from common unit offerings	'	73,444
Principal tender on senior notes - HEP	-156,188	0
Distributions to noncontrolling interest	-58,473	-52,835
Purchase of units for restricted grants - HEP	-1,064	-3,379
Deferred financing costs and other	0	'
Beginning of period	6,352	'
End of period	1,667	'
HEP [Member] | Parent Company [Member]	'	'
Condensed Financial Statements, Captions [Line Items]	'	'
Additions to properties, plants and equipment	0	0
Payments to Acquire Businesses, Net of Cash Acquired	'	0
Proceeds from sale of assets	0	'
Net repayments under credit agreement b HEP	'	0
Proceeds from common unit offerings	'	73,444
Purchase of units for restricted grants - HEP	'	0
HEP [Member] | Guarantor Restricted Subsidiaries [Member]	'	'
Condensed Financial Statements, Captions [Line Items]	'	'
Additions to properties, plants and equipment	0	0
Payments to Acquire Businesses, Net of Cash Acquired	'	11,301
Proceeds from sale of assets	-14,711	'
Net repayments under credit agreement b HEP	'	0
Purchase of units for restricted grants - HEP	'	0
HEP [Member] | Non Guarantor Restricted Subsidiaries [Member]	'	'
Condensed Financial Statements, Captions [Line Items]	'	'
Additions to properties, plants and equipment	0	0
Payments to Acquire Businesses, Net of Cash Acquired	'	0
Proceeds from sale of assets	0	'
Net repayments under credit agreement b HEP	'	0
Purchase of units for restricted grants - 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
Payments to Acquire Businesses, Net of Cash Acquired	'	11,301
Proceeds from sale of assets	-14,711	'
Net repayments under credit agreement b HEP	'	0
Purchase of units for restricted grants - HEP	'	0
HEP [Member] | Eliminations [Member]	'	'
Condensed Financial Statements, Captions [Line Items]	'	'
Additions to properties, plants and equipment	0	0
Payments to Acquire Businesses, Net of Cash Acquired	'	0
Proceeds from sale of assets	0	'
Net repayments under credit agreement b HEP	'	0
Net borrowings under credit agreement b HEP	0	'
Proceeds from common unit offerings	'	$0