HF Sinclair 10-Q 4 May 16 2016 Q1 Quarterly report Financial data

Document And Entity Information

Document And Entity Information - shares	3 Months Ended
	Mar. 31, 2016	Apr. 29, 2016
Document And Entity Information [Abstract]
Entity Registrant Name	HollyFrontier Corp
Entity Central Index Key	48,039
Current Fiscal Year End Date	--12-31
Entity Filer Category	Large Accelerated Filer
Document Type	10-Q
Document Period End Date	Mar. 31, 2016
Document Fiscal Year Focus	2,016
Document Fiscal Period Focus	Q1
Amendment Flag	false
Entity Common Stock, Shares Outstanding		176,519,301

Consolidated Balance Sheets (Un

Consolidated Balance Sheets (Unaudited) - USD ($) $ in Thousands	Mar. 31, 2016	Dec. 31, 2015
Current assets:
Cash and cash equivalents (HEP: $9,034 and $15,013, respectively)	$ 111,021	$ 66,533
Marketable securities	0	144,019
Total cash, cash equivalents and short-term marketable securities	111,021	210,552
Accounts receivable: Product and transportation (HEP: $41,055 and $41,075, respectively)	410,764	323,858
Crude oil resales	20,150	28,120
Accounts receivable, total	430,914	351,978
Inventories: Crude oil and refined products	762,800	712,865
Materials and supplies (HEP: $2,122 and $1,972, respectively)	129,138	129,004
Inventories, total	891,938	841,869
Income taxes receivable	32,813	0
Prepayments and other (HEP: $3,059 and $3,082, respectively)	32,584	43,666
Total current assets	1,499,270	1,448,065
Properties, plants and equipment, at cost (HEP: $1,383,186 and $1,397,965, respectively)	5,625,455	5,490,189
Less accumulated depreciation (HEP: $(290,743) and $(298,282), respectively)	(1,429,198)	(1,374,527)
Properties, plants and equipment, net	4,196,257	4,115,662
Turnaround costs	263,773	231,873
Goodwill (HEP: $288,991 and $288,991, respectively)	2,331,781	2,331,781
Intangibles and other (HEP: $170,896 and $128,583, respectively)	303,206	260,918
Other assets, total	2,898,760	2,824,572
Total assets	8,594,287	8,388,299
Current liabilities:
Accounts payable (HEP: $18,480 and $22,583, respectively)	731,271	716,490
Income taxes payable	0	8,142
Accrued liabilities (HEP: $16,074 and $26,341, respectively)	154,337	135,983
Total current liabilities	885,608	860,615
Long-term debt (HEP: $1,061,944 and $1,008,752, respectively)	1,308,168	1,040,040
Deferred income taxes (HEP: $458 and $431, respectively)	544,308	497,906
Other long-term liabilities (HEP: $55,381 and $59,376, respectively)	213,005	179,965
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 March 31, 2016 and December 31, 2015	2,560	2,560
Additional capital	4,011,634	4,011,052
Retained earnings	3,234,040	3,271,189
Accumulated other comprehensive income	(4,566)	(4,155)
Common stock held in treasury, at cost - 79,442,190 and 75,728,478 shares as of March 31, 2016 and December 31, 2015, respectively	(2,156,844)	(2,027,231)
Total HollyFrontier stockholders' equity	5,086,824	5,253,415
Noncontrolling interest	556,374	556,358
Total equity	5,643,198	5,809,773
Total liabilities and equity	$ 8,594,287	$ 8,388,299

Consolidated Balance Sheets (Pa

Consolidated Balance Sheets (Parenthetical) - USD ($) $ in Thousands	Mar. 31, 2016	Dec. 31, 2015
Cash and cash equivalents (HEP: $9,034 and $15,013, respectively)	$ 111,021	$ 66,533
Accounts receivable: Product and transportation (HEP: $41,055 and $41,075, respectively)	410,764	323,858
Materials and supplies (HEP: $2,122 and $1,972, respectively)	129,138	129,004
Prepayments and other (HEP: $3,059 and $3,082, respectively)	32,584	43,666
Properties, plants and equipment, at cost (HEP: $1,383,186 and $1,397,965, respectively)	5,625,455	5,490,189
Less accumulated depreciation (HEP: $(290,743) and $(298,282), respectively)	(1,429,198)	(1,374,527)
Goodwill (HEP: $288,991 and $288,991, respectively)	2,331,781	2,331,781
Intangibles and other (HEP: $170,896 and $128,583, respectively)	303,206	260,918
Accounts payable (HEP: $18,480 and $22,583, respectively)	731,271	716,490
Accrued liabilities (HEP: $16,074 and $26,341, respectively)	154,337	135,983
Long-term debt (HEP: $1,061,944 and $1,008,752, respectively)	1,308,168	1,040,040
Deferred income taxes (HEP: $458 and $431, respectively)	544,308	497,906
Other long-term liabilities (HEP: $55,381 and $59,376, respectively)	$ 213,005	$ 179,965
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	79,442,190	75,728,478
HEP [Member]
Cash and cash equivalents (HEP: $9,034 and $15,013, respectively)	$ 9,034	$ 15,013
Accounts receivable: Product and transportation (HEP: $41,055 and $41,075, respectively)	41,055	41,075
Materials and supplies (HEP: $2,122 and $1,972, respectively)	2,122	1,972
Prepayments and other (HEP: $3,059 and $3,082, respectively)	3,059	3,082
Properties, plants and equipment, at cost (HEP: $1,383,186 and $1,397,965, respectively)	1,383,186	1,397,965
Less accumulated depreciation (HEP: $(290,743) and $(298,282), respectively)	(290,743)	(298,282)
Goodwill (HEP: $288,991 and $288,991, respectively)	288,991	288,991
Intangibles and other (HEP: $170,896 and $128,583, respectively)	170,896	128,583
Accounts payable (HEP: $18,480 and $22,583, respectively)	18,480	22,583
Accrued liabilities (HEP: $16,074 and $26,341, respectively)	16,074	26,341
Long-term debt (HEP: $1,061,944 and $1,008,752, respectively)	1,061,944	1,008,752
Deferred income taxes (HEP: $458 and $431, respectively)	458	431
Other long-term liabilities (HEP: $55,381 and $59,376, respectively)	$ 55,381	$ 59,376

Consolidated Statements Of Inco

Consolidated Statements Of Income (Unaudited) - USD ($) shares in Thousands, $ in Thousands	3 Months Ended
	Mar. 31, 2016	Mar. 31, 2015
Sales and other revenues	$ 2,018,724	$ 3,006,626
Operating costs and expenses:
Cost of products sold (exclusive of depreciation and amortization)	1,625,163	2,251,373
Lower of cost or market inventory valuation adjustment	(56,121)	(6,546)
Costs of products sold, net	1,569,042	2,244,827
Operating expenses (exclusive of depreciation and amortization)	252,583	263,596
General and administrative expenses (exclusive of depreciation and amortization)	25,621	29,569
Depreciation and amortization	87,880	80,012
Total operating costs and expenses	1,935,126	2,618,004
Income from operations	83,598	388,622
Other income (expense):
Earnings (loss) of equity method investments	2,765	(7,807)
Interest income	75	962
Interest expense	(12,087)	(10,154)
Loss on early extinguishment of debt	(8,718)	0
Gain (loss) on sale of assets	65	766
Other income (expense) total	(17,900)	(16,233)
Income before income taxes	65,698	372,389
Income tax provision (benefit):
Current	(24,354)	139,198
Deferred	46,662	(9,470)
Income tax provision total	22,308	129,728
Net income	43,390	242,661
Net Income (Loss) Attributable to Noncontrolling Interest	22,137	15,785
Net income attributable to HollyFrontier stockholders	$ 21,253	$ 226,876
Earnings per share attributable to HollyFrontier stockholders:
Basic	$ 0.12	$ 1.16
Diluted	0.12	1.16
Cash dividends declared per common share	$ 0.33	$ 0.32
Average number of common shares outstanding:
Basic	176,737	195,069
Diluted	176,784	195,121

Consolidated Statements Of Comp

Consolidated Statements Of Comprehensive Income (Unaudited) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2016	Mar. 31, 2015
Net income	$ 43,390	$ 242,661
Other comprehensive income (loss)
Unrealized gain (loss) on marketable securities	78	108
Reclassification adjustments to net income on sale or maturity of marketable securities	23	(40)
Net unrealized gain (loss) on marketable securities	101	68
Change in fair value of cash flow hedging instruments	(12,604)	(15,428)
Reclassification adjustments to net income on settlement of cash flow hedging instruments	11,286	(4,161)
Amortization of unrealized loss attributable to discontinued cash flow hedges	270	270
Net unrealized gain (loss) on hedging instruments	(1,048)	(19,319)
Other comprehensive income (loss) before income taxes	(947)	(19,251)
Income tax expense (benefit)	(261)	(7,275)
Other comprehensive income (loss)	(686)	(11,976)
Total comprehensive income	42,704	230,685
Less noncontrolling interest in comprehensive income	21,862	15,331
Comprehensive income attributable to HollyFrontier stockholders	$ 20,842	$ 215,354

Consolidated Statements Of Cash

Consolidated Statements Of Cash Flows (Unaudited) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2016	Mar. 31, 2015
Cash flows from operating activities:
Net income	$ 43,390	$ 242,661
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	87,880	80,012
Lower of cost or market inventory valuation adjustment	(56,121)	(6,546)
Net loss of equity method investments, inclusive of distributions	(265)	8,557
Gain on sale of assets	(23)	(766)
Loss on early extinguishment of debt	8,718	0
Deferred income taxes	46,662	(9,470)
Equity based compensation expense	3,226	7,225
Change in fair value - derivative instruments	3,189	2,223
(Increase) decrease in current assets:
Accounts receivable	(78,936)	63,517
Inventories	7,276	(74,001)
Income taxes receivable	(32,813)	11,719
Prepayments and other	10,586	22,203
Increase (decrease) in current liabilities:
Accounts payable	2,401	(165,839)
Income taxes payable	(10,555)	92,374
Accrued liabilities	8,519	(3,059)
Turnaround expenditures	(36,994)	(29,100)
Other, net	496	5,182
Net cash provided by operating activities	6,636	246,892
Cash flows from investing activities:
Additions to properties, plants and equipment	(131,700)	(120,892)
Proceeds from sale of assets	258	814
Purchases of marketable securities	(4,082)	(118,816)
Sales and maturities of marketable securities	148,204	178,524
Net cash provided by (used for) investing activities	(5,193)	(112,097)
Cash flows from financing activities:
Borrowings under credit agreement	837,000	153,500
Repayments under credit agreement	(784,000)	(130,500)
Net proceeds from Issuance of senior notes	246,690	0
Repayment of financing obligation	(39,500)
Inventory repurchase obligation	693	7,434
Purchase of treasury stock	(133,430)	(55,065)
Dividends	(58,602)	(62,335)
Other, net	(4,075)	(1,250)
Net cash used for financing activities	43,045	(108,688)
Cash and cash equivalents:
Increase (decrease) for the period	44,488	26,107
Beginning of period	66,533	567,985
End of period	111,021	594,092
Cash paid during the period for:
Interest	15,261	14,522
Income taxes	19,166	38,985
HEP [Member]
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	16,029	14,290
Cash flows from investing activities:
Additions to properties, plants and equipment	(17,873)	(51,727)
Cash flows from financing activities:
Borrowings under credit agreement	522,000
Repayment of financing obligation	(39,500)	0
Distributions to noncontrolling interest	(21,731)	$ (20,472)
Cash and cash equivalents:
Beginning of period	15,013
End of period	$ 9,034

Description of Business and Pre

Description of Business and Presentation of Financial Statements	3 Months Ended
	Mar. 31, 2016
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 March 31, 2016 , 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 HollyFrontier Asphalt Company LLC (“HFC Asphalt”) which operates various asphalt terminals in Arizona, New Mexico and Oklahoma; and • owned a 39% interest in HEP, a consolidated variable interest entity (“VIE”), which includes our 2% general partner interest. 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 March 31, 2016 , the consolidated results of operations and comprehensive income for the three months ended March 31, 2016 and 2015 and consolidated cash flows for the three months ended March 31, 2016 and 2015 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, 2015 that has been filed with the SEC. Our results of operations for the three months ended March 31, 2016 are not necessarily indicative of the results of operations to be realized for the year ending December 31, 2016 . Accounts Receivable: Our accounts receivable consist of amounts due from customers that are primarily companies in the petroleum industry. Credit is extended based on our evaluation of the customer’s financial condition, and in certain circumstances collateral, such as letters of credit or guarantees, is required. We reserve for doubtful accounts based on our historical loss experience as well as specific accounts identified as high risk, which historically have been minimal. Credit losses are charged to the allowance for doubtful accounts when an account is deemed uncollectible. Our allowance for doubtful accounts was $2.3 million at both March 31, 2016 and December 31, 2015 . Inventories: Inventories are stated at the lower of cost, using the last-in, first-out (“LIFO”) method for crude oil, unfinished and finished refined products and the average cost method for materials and supplies, or market. In periods of rapidly declining prices, LIFO inventories may have to be written down to market value due to the higher costs assigned to LIFO layers in prior periods. In addition, the use of the LIFO inventory method may result in increases or decreases to cost of sales in years that inventory volumes decline as the result of charging cost of sales with LIFO inventory costs generated in prior periods. An actual valuation of inventory under the LIFO method is made at the end of each year based on the inventory levels at that time. Accordingly, interim LIFO calculations are based on management’s estimates of expected year-end inventory levels and are subject to the final year-end LIFO inventory valuation. Goodwill: We have goodwill that primarily arose from our merger with Frontier Oil Corporation on July 1, 2011. Goodwill represents the excess of the cost of an acquired entity over the fair value of the assets acquired and liabilities assumed. Goodwill is not subject to amortization and is tested annually or more frequently if events or circumstances indicate the possibility of impairment. As of March 31, 2016 , 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 possible that the goodwill related to our Cheyenne Refinery will be determined to be impaired at some point in the future. A prolonged, moderate decrease in operating margins could potentially result in impairment to goodwill allocated to our Cheyenne reporting unit. Such impairment charges could be material. Inventory Repurchase Obligations: We periodically enter into same-party sell / buy transactions, whereby we sell certain refined product inventory and subsequently repurchase the inventory in order to facilitate delivery to certain locations. Such sell / buy transactions are accounted as inventory repurchase obligations under which proceeds received under the initial sell is recognized as an inventory repurchase obligation that is subsequently reversed when the inventory is repurchased. For the three months ended March 31, 2016 and 2015, we received proceeds of $14.3 million and $30.2 million , respectively, and repaid $13.6 million and $22.8 million , respectively, under these sell / buy transactions. New Accounting Pronouncements Leases In February 2016, Accounting Standard Update (“ASU”) 2016-02, “Leases” was issued requiring leases to be measured and recognized as a lease liability, with a corresponding right-of-use asset on the balance sheet. This standard has an effective date of January 1, 2019, and we are evaluating the impact of this standard. Consolidation In February 2015, ASU 2015-02, “Consolidation” was issued to improve consolidation guidance for certain legal entities. It modifies the evaluation of whether limited partnerships and similar legal entities are VIEs or voting interest entities, eliminates the presumption that a general partner should consolidate a limited partnership, affects the consolidation analysis of reporting entities involved with VIEs, particularly those that have fee arrangements and related party provisions and provides a scope exception from consolidation guidance for certain reporting entities that comply with or operate in accordance with requirements that are similar to those included in Rule 2a-7 of the Investment Company Act of 1940 for registered money market funds. We adopted this standard effective January 1, 2016, which did not affect our financial position or results of operations. Revenue Recognition In May 2014, ASU 2014-09, “Revenue from Contracts with Customers” was issued requiring revenue to be recognized when promised goods or services are transferred to customers in an amount that reflects the expected consideration for these goods or services. This standard has an effective date of January 1, 2018, and we are evaluating the impact of this standard.

Holly Energy Partners

Holly Energy Partners	3 Months Ended
	Mar. 31, 2016
Holly Energy Partners [Abstract]
Holly Energy Partners	HEP, a consolidated VIE, is a publicly held master limited partnership that owns and operates logistic assets consisting of petroleum product and crude oil pipelines, terminals, tankage, loading rack facilities and refinery processing units 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”), the owner of a pipeline running from Woods Cross, Utah to Las Vegas, Nevada (the “UNEV Pipeline”) and associated product terminals; a 50% interest in Frontier Pipeline Company, the owner of a pipeline running from Wyoming to Frontier Station, Utah (the “Frontier Pipeline”); a 50% interest in Osage Pipe Line Company, LLC, the owner of a pipeline running from Cushing, Oklahoma to El Dorado, Kansas (the “Osage Pipeline”); and a 25% interest in SLC Pipeline LLC, the owner of a pipeline (the “SLC Pipeline”) that serves refineries in the Salt Lake City, Utah area. As of March 31, 2016 , we owned a 39% interest in HEP, including the 2% general partner interest. As the general partner of HEP, we have the sole ability to direct the activities that most significantly impact HEP’s financial performance, and therefore we consolidate HEP. HEP has two primary customers (including us) and generates revenues by charging tariffs for transporting petroleum products and crude oil through its pipelines, by charging fees for terminalling refined products and other hydrocarbons, and storing and providing other services at its storage tanks and terminals. Under our long-term transportation agreements with HEP (discussed further below), we accounted for 81% of HEP’s total revenues for the three months ended March 31, 2016 . 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. Tulsa Tanks On March 31, 2016, HEP acquired crude oil tanks located at our Tulsa Refineries from an affiliate of Plains All American Pipeline, L.P. (“Plains”) for $39.5 million . Previously in 2009, we sold these tanks to Plains and leased them back, and due to our continuing interest in the tanks, we accounted for the transaction as a financing arrangement. Accordingly, the tanks remained on our balance sheet and were depreciated for accounting purposes, and the proceeds received from Plains were recorded as a financing obligation and presented as a component of outstanding debt. In accounting for HEP’s March 2016 purchase from Plains, the amount paid was recorded against our outstanding financing obligation balance of $30.8 million , with the excess $8.7 million payment resulting in a loss on early extinguishment of debt. Magellan Asset Exchange On February 22, 2016, we acquired a 50% membership interest in Osage Pipe Line Company, LLC (“Osage”) in exchange for a 20-year terminalling services agreement, whereby a subsidiary of Magellan Midstream Partners (“Magellan Midstream”) will provide terminalling services for all of our products originating in Artesia, New Mexico that require terminalling in or through El Paso, Texas. Under the agreement, we will be charged tariffs based on the volumes of refined product processed. Osage is the owner of the Osage Pipeline, a 135 -mile pipeline that transports crude oil from Cushing, Oklahoma to our El Dorado Refinery in Kansas and also has a connection to the Jayhawk pipeline that services the CHS refinery in McPherson, Kansas. This exchange was accounted for at fair value, whereby the 50% membership interest in the Osage Pipeline was recorded at appraised fair value and an offsetting residual deferred credit in the amount of $38.9 million was recorded, which will be amortized over the 20-year service period. No gain or loss was recorded for this exchange. Also on February 22, 2016, we contributed the 50% membership interest in Osage to HEP, and in exchange received HEP’s El Paso terminal. Pursuant to this exchange, HEP agreed to build two connections to Magellan Midstream’s El Paso terminal. In addition, HEP agreed to become operator of the Osage Pipeline. This exchange was accounted for at carry-over basis with no resulting gain or loss. Transportation Agreements HEP serves our refineries under long-term pipeline, terminal and tankage throughput agreements and refinery processing tolling agreements expiring from 2019 through 2030. Under these agreements, we pay HEP fees to transport, store and process throughput volumes of refined products, crude oil and feedstocks on HEP’s pipeline, terminals, tankage, loading rack facilities and refinery processing units that result in minimum annual payments to HEP including UNEV (a consolidated subsidiary of HEP). Under these agreements, the agreed upon tariff rates are subject to annual tariff rate adjustments on July 1 at a rate based upon the percentage change in Producer Price Index or Federal Energy Regulatory Commission index. As of March 31, 2016 , these agreements result in minimum annualized payments to HEP of $263.7 million . Our transactions with HEP including the acquisitions discussed above and fees paid under our transportation agreements with HEP and UNEV are eliminated and have no impact on our consolidated financial statements.

Fair Value Measurements

Fair Value Measurements	3 Months Ended
	Mar. 31, 2016
Financial Instruments, Owned, at Fair Value [Abstract]
Financial Instruments	Fair Value Measurements Our financial instruments consist of cash and cash equivalents, 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 marketable securities, derivative instruments and senior notes at March 31, 2016 and December 31, 2015 were as follows: Fair Value by Input Level Carrying Amount Fair Value Level 1 Level 2 Level 3 (In thousands) March 31, 2016 Assets: Commodity price swaps $ 33,619 $ 33,619 $ — $ 33,619 $ — Forward contracts 4,197 4,197 — 4,197 — Total assets $ 37,816 $ 37,816 $ — $ 37,816 $ — Liabilities: NYMEX futures contracts $ 768 $ 768 $ 768 $ — $ — Commodity price swaps 91,295 91,295 — 91,295 — Forward contracts 6,947 6,947 — 6,947 — HollyFrontier senior notes 246,224 250,313 — 250,313 — HEP senior notes 296,944 295,500 — 295,500 — HEP interest rate swaps 263 263 — 263 — Total liabilities $ 642,441 $ 645,086 $ 768 $ 644,318 $ — December 31, 2015 Assets: Marketable securities $ 144,019 $ 144,019 $ — $ 144,019 $ — NYMEX futures contracts 3,469 3,469 3,469 — — Commodity price swaps 37,097 37,097 — 37,097 — HEP interest rate swaps 304 304 — 304 — Total assets $ 184,889 $ 184,889 $ 3,469 $ 181,420 $ — Liabilities: Commodity price swaps $ 98,930 $ 98,930 $ — $ 98,930 $ — HEP senior notes 296,752 295,500 — 295,500 — HEP interest rate swaps 114 114 — 114 — Total liabilities $ 395,796 $ 394,544 $ — $ 394,544 $ — Level 1 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 Instruments Derivative instruments consisting of commodity price swaps, forward sales and purchase contracts and HEP’s interest rate swaps are measured and recorded at fair value using Level 2 inputs. The fair values of the commodity price and interest rate swap contracts are based on the net present value of expected future cash flows related to both variable and fixed rate legs of the respective swap agreements. The measurements are computed using market-based observable inputs, quoted forward commodity prices with respect to our commodity price swaps and the forward London Interbank Offered Rate (“LIBOR”) yield curve with respect to HEP’s interest rate swaps. The fair value of the 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 Instruments We at times have forward commodity sales and purchase contracts for which quoted forward market prices are not readily available. The forward rate used to value these forward sales and purchase contracts are derived using a projected forward rate using quoted market rates for similar products, adjusted for regional pricing and grade differentials, a Level 3 input. The following table presents the changes in fair value of our Level 3 assets and liabilities (all related to derivative instruments) for the three months ended March 31, 2015 : Three Months Ended Level 3 Instruments (In thousands) Liability balance at beginning of period $ — Change in fair value: Recognized in other comprehensive income (2,552 ) Settlement date fair value of contractual maturities: Recognized in sales and other revenues — Liability balance at end of period $ (2,552 ) Additionally during the three months ended March 31, 2016, we recognized a non-recurring fair value measurement of $44.4 million that relates to HEP’s equity interest in Osage. The fair value was based on a combination of valuation methods including discounted cash flows, and the guideline public company and guideline transaction methods, level 3 inputs.

Earnings Per Share

Earnings Per Share	3 Months Ended
	Mar. 31, 2016
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 denominators of the basic and diluted per share computations for net income attributable to HollyFrontier stockholders: Three Months Ended 2016 2015 (In thousands, except per share data) Net income attributable to HollyFrontier stockholders $ 21,253 $ 226,876 Participating securities’ share in earnings 216 644 Net income attributable to common shares $ 21,037 $ 226,232 Average number of shares of common stock outstanding 176,737 195,069 Effect of dilutive variable restricted shares and performance share units (1) 47 52 Average number of shares of common stock outstanding assuming dilution 176,784 195,121 Basic earnings per share $ 0.12 $ 1.16 Diluted earnings per share $ 0.12 $ 1.16 (1) Excludes anti-dilutive restricted and performance share units of: 177 412

Stock-Based Compensation

Stock-Based Compensation	3 Months Ended
	Mar. 31, 2016
Share-based Compensation [Abstract]
Stock-Based Compensation	Stock-Based Compensation As of March 31, 2016 , 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 $3.2 million and $6.3 million for the three months ended March 31, 2016 and 2015 , 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 $0.7 million and $0.9 million for the three months ended March 31, 2016 and 2015 , 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 three months ended March 31, 2016 is presented below: Restricted Stock and Restricted Stock Units Grants Weighted Average Grant Date Fair Value Aggregate Intrinsic Value ($000) Outstanding at January 1, 2016 (non-vested) 722,525 $ 48.35 Granted 5,628 38.26 Forfeited (9,168 ) 48.08 Outstanding at March 31, 2016 (non-vested) 718,985 $ 47.42 $ 25,395 For the three months ended March 31, 2016 , no restricted stock or restricted stock units vested. As of March 31, 2016 , there was $20.6 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 1.6 years. Performance Share Units Under our Long-Term Incentive Compensation Plan, we grant certain officers and other key employees performance share units, which are payable in stock upon meeting certain criteria over the service period, and generally vest over a period of three years. Under the terms of our performance share unit grants, awards are subject to “financial performance” and “market performance” criteria. Financial performance is based on our financial performance compared to a peer group of independent refining companies, while market performance is based on the relative standing of total shareholder return achieved by HollyFrontier compared to peer group companies. The number of shares ultimately issued under these awards can range from zero to 200% of target award amounts. As of March 31, 2016 , estimated share payouts for outstanding non-vested performance share unit awards averaged approximately 75% of target amounts. A summary of performance share unit activity and changes during the three months ended March 31, 2016 is presented below: Performance Share Units Grants Outstanding at January 1, 2016 (non-vested) 637,938 Granted 2,861 Forfeited (144,362 ) Outstanding at March 31, 2016 (non-vested) 496,437 As of March 31, 2016 , there was $11.8 million of total unrecognized compensation cost related to non-vested performance share units having a grant date fair value of $46.16 per unit. That cost is expected to be recognized over a weighted-average period of 1.9 years.

Cash and Cash Equivalents and I

Cash and Cash Equivalents and Investments in Marketable Securities	3 Months Ended
	Mar. 31, 2016
Cash, Cash Equivalents, and Short-term Investments [Abstract]
Cash And Cash Equivalents And Investments In Marketable Securities	Cash and Cash Equivalents and Investments in Marketable Securities Our investment portfolio at March 31, 2016 consisted of cash and cash equivalents. We only 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 (loss). 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 as of December 31, 2015: Amortized Cost Gross Unrealized Gain Gross Unrealized Loss Fair Value (Net Carrying Amount) (In thousands) December 31, 2015 Commercial paper $ 22,876 $ 1 $ (2 ) $ 22,875 Corporate debt securities 32,311 — (41 ) 32,270 State and political subdivisions debt securities 88,935 6 (67 ) 88,874 Total marketable securities $ 144,122 $ 7 $ (110 ) $ 144,019 No interest income was recognized on our marketable securities for the three months ended March 31, 2016 . We recognized interest income of $0.5 million for the three months ended March 31, 2015 .

Inventories

Inventories	3 Months Ended
	Mar. 31, 2016
Inventory, Net [Abstract]
Inventories	Inventories Inventory consists of the following components: March 31, December 31, 2015 (In thousands) Crude oil $ 523,754 $ 518,922 Other raw materials and unfinished products (1) 184,804 214,832 Finished products (2) 622,578 603,568 Lower of cost or market reserve (568,336 ) (624,457 ) Process chemicals (3) 5,558 4,477 Repair and maintenance supplies and other 123,580 124,527 Total inventory $ 891,938 $ 841,869 (1) Other raw materials and unfinished products include feedstocks and blendstocks, other than crude. (2) Finished products include gasolines, jet fuels, diesels, lubricants, asphalts, LPG’s and residual fuels. (3) Process chemicals include additives and other chemicals. Inventories, which are valued at the lower of LIFO cost or market, reflect a valuation reserve of $568.3 million and $624.5 million at March 31, 2016 and December 31, 2015 , respectively. The December 31, 2015 market reserve of $624.5 million was reversed due to the sale of inventory quantities that gave rise to the 2015 reserve. A new market reserve of $568.3 million was established as of March 31, 2016 based on market conditions and prices at that time. The effect of the change in lower of cost or market reserve was a $56.1 million and $6.5 million decrease to cost of products sold for the three months ended March 31, 2016 and 2015 , respectively.

Environmental

Environmental	3 Months Ended
	Mar. 31, 2016
Environmental Expense and Liabilities [Abstract]
Environmental	Environmental Environmental costs are charged to operating expenses if they relate to an existing condition caused by past operations and do not contribute to current or future revenue generation. We have ongoing investigations of environmental matters at various locations as part of our assessment process to determine the amount of environmental obligation we may have, if any, with respect to these matters for which we have recorded the estimated cost of the studies. Liabilities are recorded when site restoration and environmental remediation, cleanup and other obligations are either known or considered probable and can be reasonably estimated. Such estimates are undiscounted and require judgment with respect to costs, time frame and extent of required remedial and cleanup activities and are subject to periodic adjustments based on currently available information. Recoveries of environmental costs through insurance, indemnification arrangements or other sources are included in other assets to the extent such recoveries are considered probable. We expensed $0.9 million and $4.6 million for the three months ended March 31, 2016 and 2015 , respectively, for environmental remediation obligations. The accrued environmental liability reflected in our consolidated balance sheets was $97.0 million and $98.1 million at March 31, 2016 and December 31, 2015 , respectively, of which $82.5 million and $83.5 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). The amount of our accrued liability could increase in the future when the results of ongoing investigations become known, are considered probable and can be reasonably estimated.

Debt

Debt	3 Months Ended
	Mar. 31, 2016
Debt Disclosure [Abstract]
Debt	Debt HollyFrontier Credit Agreement We have a $1 billion senior unsecured revolving credit facility maturing in July 2019 (the “HollyFrontier Credit Agreement”), which may be used for revolving credit loans and letters of credit from time to time and is available to fund general corporate purposes. Indebtedness under the HollyFrontier Credit Agreement is recourse to HollyFrontier. During the three months ended March 31, 2016 , we received advances totaling $315.0 million and repaid $315.0 million under the HollyFrontier Credit Agreement. At March 31, 2016 , we were in compliance with all covenants, had no outstanding borrowings and had outstanding letters of credit totaling $3.3 million under the HollyFrontier Credit Agreement. HEP Credit Agreement In March 2016, HEP amended its senior secured revolving credit facility maturing in November 2018 (the “HEP Credit Agreement”), increasing the size of the facility from $850 million to $1.2 billion . The HEP Credit Agreement 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. During the three months ended March 31, 2016 , HEP received advances totaling $522.0 million and repaid $469.0 million under the HEP Credit Agreement. At March 31, 2016 , HEP was in compliance with all of its covenants, had outstanding borrowings of $765.0 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. Indebtedness under the HEP Credit Agreement involves recourse to HEP Logistics Holdings, L.P., its general partner, and is guaranteed by HEP’s wholly-owned subsidiaries. Any recourse to the general partner would be limited to the extent of HEP Logistics Holdings, L.P.’s assets, which other than its investment in HEP are not significant. HEP’s creditors have no recourse to our other assets. Furthermore, our creditors have no recourse to the assets of HEP and its consolidated subsidiaries. HollyFrontier Senior Notes In March 2016, we issued $250 million in aggregate principal amount of 5.875% senior notes (the “HollyFrontier Senior Notes”) maturing April 2026 . The HollyFrontier Senior Notes are unsecured and unsubordinated obligations of ours and rank equally with all our other existing and future unsecured and unsubordinated indebtedness. HollyFrontier Financing Obligation In March 2016, we extinguished a financing obligation at a cost of $39.5 million and recognized an $8.7 million loss on the early termination. The financing obligation related to a sale and lease-back of certain crude oil tankage that we sold to an affiliate of Plains in October 2009 for $40.0 million . HollyFrontier Term Loan On April 28, 2016, we entered into a $350 million senior unsecured term loan (the “HollyFrontier Term Loan”) maturing in April 2019. The HollyFrontier Term Loan is fully drawn and may be used for general corporate purposes. Indebtedness under the HollyFrontier Term Loan is recourse to HollyFrontier, and as of May 4, 2016, we are in compliance with all covenants. 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. 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: March 31, December 31, (In thousands) HollyFrontier 5.875% Senior Notes Principal $ 250,000 $ — Unamortized discount and debt issuance costs (3,776 ) — 246,224 — Financing Obligation — 31,288 Total HollyFrontier long-term debt 246,224 31,288 HEP Credit Agreement 765,000 712,000 HEP 6.5% Senior Notes Principal 300,000 300,000 Unamortized discount and debt issuance costs (3,056 ) (3,248 ) 296,944 296,752 Total HEP long-term debt 1,061,944 1,008,752 Total long-term debt $ 1,308,168 $ 1,040,040 We capitalized interest attributable to construction projects of $0.7 million and $2.9 million for the three months ended March 31, 2016 and 2015 , respectively.

Derivative Instruments And Hedg

Derivative Instruments And Hedging Activities	3 Months Ended
	Mar. 31, 2016
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Derivative Instruments And Hedging Activities	Derivative Instruments and Hedging Activities Commodity Price Risk Management Our primary market risk is commodity price risk. We are exposed to market risks related to the volatility in crude oil and refined products, as well as volatility in the price of natural gas used in our refining operations. We periodically enter into derivative contracts in the form of commodity price swaps, forward purchase and sales and futures contracts to mitigate price exposure with respect to: • our inventory positions; • natural gas purchases; • costs of crude oil and related grade differentials; • prices of refined products; and • our refining margins. Accounting Hedges We have swap contracts serving as cash flow hedges against price risk on forecasted purchases of natural gas. We also have forward sales and purchase contracts that lock in the prices of future sales and purchases of refined product. Additionally, in 2015, we had swap contracts serving as cash flow hedges against price risk on forecasted purchases of WTI crude oil and forecasted 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 and forward sales under hedge accounting: Unrealized Gain (Loss) Recognized in OCI Gain (Loss) Recognized in Earnings Due to Settlements Gain (Loss) Attributable to Hedge Ineffectiveness Recognized in Earnings Location Amount Location Amount (In thousands) Three Months Ended March 31, 2016 Change in fair value $ (11,921 ) Sales and other revenues $ (4,756 ) Loss reclassified to earnings due to settlements 11,056 Cost of products sold — Amortization of discontinued hedges reclassified to earnings 270 Operating expenses (6,570 ) Operating expenses $ — Total $ (595 ) $ (11,326 ) $ — Three Months Ended March 31, 2015 Change in fair value $ (14,148 ) Sales and other revenues $ 49,180 Sales and other revenues $ (133 ) Gain reclassified to earnings due to settlements (4,692 ) Cost of products sold (40,769 ) Cost of products sold 1,244 Amortization of discontinued hedges reclassified to earnings 270 Operating expenses (3,989 ) Operating expenses 547 Total $ (18,570 ) $ 4,422 $ 1,658 As of March 31, 2016 , we have the following notional contract volumes related to outstanding derivative instruments serving as cash flow hedges against price risk on forecasted transactions: Notional Contract Volumes by Year of Maturity Derivative Instruments Total Outstanding Notional 2016 2017 Unit of Measure Natural gas price swaps - long 16,800,000 7,200,000 9,600,000 MMBTU Forward gasoline and diesel contracts - short 975,000 975,000 — 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 16,800,000 MMBTU’s to be purchased ratably through 2017. As of March 31, 2016 , we have an unrealized loss of $ 1.9 million classified in accumulated other comprehensive loss that relates to the application of hedge accounting prior to dedesignation that is amortized as a charge to operating expenses as the contracts mature. Economic Hedges We also have swap contracts that serve as economic hedges (derivatives used for risk management, but not designated as accounting hedges) to fix our purchase price on forecasted purchases of WTI crude oil, and to lock in basis spread differentials on forecasted purchases of crude oil and natural gas. Also, we have NYMEX futures contracts to lock in prices on forecasted purchases of inventory. These contracts are measured at fair value with offsetting adjustments (gains/losses) recorded directly to income. The following table presents the pre-tax effect on income due to maturities and fair value adjustments of our economic hedges: Three Months Ended Location of Gain (Loss) Recognized in Income 2016 2015 (In thousands) Cost of products sold $ 474 $ 22,281 Operating expenses (3,469 ) (296 ) Total $ (2,995 ) $ 21,985 As of March 31, 2016 , 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 2016 2017 Unit of Measure Crude price swaps (basis spread) - long 8,800,000 8,800,000 — Barrels Natural gas price swaps (basis spread) - long 18,039,000 7,731,000 10,308,000 MMBTU Natural gas price swaps - long 16,800,000 7,200,000 9,600,000 MMBTU Natural gas price swaps - short 16,800,000 7,200,000 9,600,000 MMBTU NYMEX futures (WTI) - short 910,000 910,000 — Barrels Forward gasoline and diesel contracts - long 1,175,000 1,175,000 — Barrels Interest Rate Risk Management HEP uses interest rate swaps to manage its exposure to interest rate risk. As of March 31, 2016 , HEP had two interest rate swap contracts with identical terms that hedge its exposure to the cash flow risk caused by the effects of LIBOR changes on $150.0 million in credit agreement advances. The swaps 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 2.25% as of March 31, 2016 , which equaled an effective interest rate of 2.99% . Both of these swap contracts mature in July 2017 and 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 March 31, 2016 Interest rate swaps Change in fair value $ (683 ) Loss reclassified to earnings due to settlements 230 Interest expense $ (230 ) Total $ (453 ) $ (230 ) Three Months Ended March 31, 2015 Interest rate swaps Change in fair value $ (1,280 ) Loss reclassified to earnings due to settlements 531 Interest expense $ (531 ) Total $ (749 ) $ (531 ) 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) March 31, 2016 Derivatives designated as cash flow hedging instruments: Commodity price swap contracts $ — $ — $ — $ 35,810 $ — $ 35,810 Forward contracts — — — 2,587 — 2,587 Interest rate swap contracts — — — 263 — 263 $ — $ — $ — $ 38,660 $ — $ 38,660 Derivatives not designated as cash flow hedging instruments: Commodity price swap contracts $ — $ — $ — $ 55,505 $ (33,639 ) $ 21,866 NYMEX futures contracts — — — 768 — 768 Forward contracts 4,197 — 4,197 4,360 — 4,360 $ 4,197 $ — $ 4,197 $ 60,633 $ (33,639 ) $ 26,994 Total net balance $ 4,197 $ 65,654 Balance sheet classification: Accrued liabilities $ 45,911 Prepayment and other $ 4,197 Other long-term liabilities 19,743 $ 4,197 $ 65,654 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, 2015 Derivatives designated as cash flow hedging instruments: Commodity price swap contracts $ — $ — $ — $ 38,755 $ — $ 38,755 Interest rate swap contracts 304 — 304 114 — 114 $ 304 $ — $ 304 $ 38,869 $ — $ 38,869 Derivatives not designated as cash flow hedging instruments: Commodity price swap contracts $ — $ — $ — $ 60,196 $ (37,118 ) $ 23,078 NYMEX futures contracts 3,469 — 3,469 — — — $ 3,469 $ — $ 3,469 $ 60,196 $ (37,118 ) $ 23,078 Total net balance $ 3,773 $ 61,947 Balance sheet classification: Prepayment and other $ 3,469 Accrued liabilities $ 36,976 Intangibles and other 304 Other long-term liabilities 24,971 $ 3,773 $ 61,947 At March 31, 2016 , we had a pre-tax net unrealized loss of $41.7 million classified in accumulated other comprehensive loss that relates to all accounting hedges having contractual maturities through 2017. Assuming commodity prices and interest rates remain unchanged, an unrealized loss of $26.4 million will be effectively transferred from accumulated other comprehensive loss into the statement of income as the hedging instruments contractually mature over the next twelve-month period.

Equity

Equity	3 Months Ended
	Mar. 31, 2016
Stockholders' Equity Note [Abstract]
Equity	Equity Changes to equity during the three months ended March 31, 2016 are presented below: HollyFrontier Stockholders’ Equity Noncontrolling Interest Total Equity (In thousands) Balance at December 31, 2015 $ 5,253,415 $ 556,358 $ 5,809,773 Net income 21,253 22,137 43,390 Dividends (58,402 ) — (58,402 ) Distributions to noncontrolling interest holders — (21,731 ) (21,731 ) Other comprehensive loss, net of tax (411 ) (275 ) (686 ) Equity-based compensation 2,575 651 3,226 Tax attributable to equity-based compensation (2,225 ) — (2,225 ) Purchase of treasury stock (129,381 ) — (129,381 ) Purchase of HEP units for restricted grants — (784 ) (784 ) Other — 18 18 Balance at March 31, 2016 $ 5,086,824 $ 556,374 $ 5,643,198 In May 2015, our Board of Directors approved a $1 billion share repurchase program, which replaced all existing share repurchase programs, authorizing us to repurchase common stock in the open market or through privately negotiated transactions. The timing and amount of stock repurchases will depend on market conditions and corporate, regulatory and other relevant considerations. This program may be discontinued at any time by the Board of Directors. As of March 31, 2016 , we had remaining authorization to repurchase up to $178.8 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)	3 Months Ended
	Mar. 31, 2016
Other Comprehensive Income (Loss) [Abstract]
Other Comprehensive Income (Loss)	Other Comprehensive Income (Loss) The components and allocated tax effects of other comprehensive income (loss) are as follows: Before-Tax Tax Expense (Benefit) After-Tax (In thousands) Three Months Ended March 31, 2016 Net unrealized gain on marketable securities $ 101 $ 40 $ 61 Net unrealized loss on hedging instruments (1,048 ) (301 ) (747 ) Other comprehensive loss (947 ) (261 ) (686 ) Less other comprehensive loss attributable to noncontrolling interest (275 ) — (275 ) Other comprehensive loss attributable to HollyFrontier stockholders $ (672 ) $ (261 ) $ (411 ) Three Months Ended March 31, 2015 Net unrealized gain on marketable securities $ 68 $ 27 $ 41 Net unrealized loss on hedging instruments (19,319 ) (7,302 ) (12,017 ) Other comprehensive loss (19,251 ) (7,275 ) (11,976 ) Less other comprehensive loss attributable to noncontrolling interest (454 ) — (454 ) Other comprehensive loss attributable to HollyFrontier stockholders $ (18,797 ) $ (7,275 ) $ (11,522 ) 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 March 31, 2016 2015 Marketable securities $ (23 ) $ (2 ) Interest income — 42 Gain on sale of assets (23 ) 40 (9 ) 15 Income tax expense (benefit) (14 ) 25 Net of tax Hedging instruments: Commodity price swaps (4,756 ) 49,180 Sales and other revenues — (40,769 ) Cost of products sold (6,570 ) (3,989 ) Operating expenses Interest rate swaps (230 ) (531 ) Interest expense (11,556 ) 3,891 (4,418 ) 1,630 Income tax expense (benefit) (7,138 ) 2,261 Net of tax 139 322 Noncontrolling interest (6,999 ) 2,583 Net of tax and noncontrolling interest Total reclassifications for the period $ (7,013 ) $ 2,608 Accumulated other comprehensive loss in the equity section of our consolidated balance sheets includes: March 31, December 31, (In thousands) Unrealized gain on post-retirement benefit obligations $ 20,737 $ 20,737 Unrealized loss on marketable securities — (61 ) Unrealized loss on hedging instruments, net of noncontrolling interest (25,303 ) (24,831 ) Accumulated other comprehensive loss $ (4,566 ) $ (4,155 )

Post-retirement Plan

Post-retirement Plan	3 Months Ended
	Mar. 31, 2016
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 2016 2015 (In thousands) Service cost – benefit earned during the period $ 324 $ 424 Interest cost on projected benefit obligations 197 205 Amortization of prior service credit (871 ) (871 ) Amortization of net loss — 46 Net periodic post-retirement credit $ (350 ) $ (196 )

Contingencies

Contingencies	3 Months Ended
	Mar. 31, 2016
Loss Contingency [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	3 Months Ended
	Mar. 31, 2016
Segment Reporting [Abstract]
Segment Information	Segment Information Our operations are organized into two reportable segments, Refining and HEP. Our operations that are not included in the Refining and HEP segments are included in Corporate and Other. Intersegment transactions are eliminated in our consolidated financial statements and are included in Consolidations and Eliminations. The Refining segment represents the operations of the El Dorado, Tulsa, Navajo, Cheyenne and Woods Cross Refineries and HFC 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. HFC Asphalt operates various asphalt terminals in Arizona, New Mexico and Oklahoma. The HEP segment includes all of the operations of HEP, which owns and operates logistics and refinery assets consisting of petroleum product and crude oil pipelines, terminals, tankage, loading rack facilities and processing units in the Mid-Continent, Southwest and Rocky Mountain regions of the United States. The HEP segment also includes a 75% ownership interest in UNEV (a consolidated subsidiary of HEP); a 50% ownership interest in each of the Frontier Pipeline and the Osage Pipeline and a 25% ownership interest in the SLC Pipeline, respectively. 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, 2015 . Refining HEP (1) Corporate and Other Consolidations and Eliminations Consolidated Total (In thousands) Three Months Ended March 31, 2016 Sales and other revenues $ 1,999,587 $ 102,010 $ 110 $ (82,983 ) $ 2,018,724 Depreciation and amortization $ 68,878 $ 16,029 $ 3,180 $ (207 ) $ 87,880 Income (loss) from operations $ 55,000 $ 56,067 $ (26,855 ) $ (614 ) $ 83,598 Capital expenditures $ 129,018 $ 17,873 $ 2,682 $ — $ 149,573 Three Months Ended March 31, 2015 Sales and other revenues $ 2,989,280 $ 89,756 $ 218 $ (72,628 ) $ 3,006,626 Depreciation and amortization $ 63,275 $ 14,290 $ 2,654 $ (207 ) $ 80,012 Income (loss) from operations $ 373,901 $ 44,210 $ (28,949 ) $ (540 ) $ 388,622 Capital expenditures $ 116,467 $ 51,727 $ 4,425 $ — $ 172,619 March 31, 2016 Cash, cash equivalents and total investments in marketable securities $ 13,726 $ 9,034 $ 88,261 $ — $ 111,021 Total assets $ 7,053,257 $ 1,607,600 $ 225,375 $ (291,945 ) $ 8,594,287 Long-term debt $ — $ 1,061,944 $ 246,224 $ — $ 1,308,168 December 31, 2015 Cash, cash equivalents and total investments in marketable securities $ 91 $ 15,013 $ 195,448 $ — $ 210,552 Total assets $ 6,831,235 $ 1,578,399 $ 289,225 $ (310,560 ) $ 8,388,299 Long-term debt $ — $ 1,008,752 $ 31,288 $ — $ 1,040,040 (1) HEP acquired the crude oil tanks at our Tulsa Refineries in March 2016. As a result, we have recast our 2015 HEP segment information to include these assets and related capital expenditures that were previously presented under the Refining segment. HEP segment revenues from external customers were $19.2 million and $17.5 million for the three months ended March 31, 2016 and 2015 , respectively.

Additional Financial Informatio

Additional Financial Information	3 Months Ended
	Mar. 31, 2016
Supplemental Guarantor / Non-Guarantor Financial Information [Abstract]
Additional Financial Information	Financial Information Borrowings pursuant to the HollyFrontier Credit Agreement are recourse to HollyFrontier, but not HEP. Furthermore, borrowings under the HEP Credit Agreement are recourse to HEP, but not to the assets of HFC with the exception of HEP Logistics Holdings, L.P., HEP’s general partner. Other than its investment in HEP, the assets of the general partner are insignificant. The following condensed financial information is provided for HollyFrontier Corporation (on a standalone basis, before consolidation of HEP), and for HEP and its consolidated subsidiaries (on a standalone basis, exclusive of HFC). Due to certain basis differences, our reported amounts for HEP may not agree to amounts reported in HEP’s periodic public filings. Condensed Consolidating Balance Sheet March 31, 2016 HollyFrontier Corp. Before Consolidation of HEP Non-Guarantor Non-Restricted Subsidiaries (HEP Segment) Consolidations and Eliminations Consolidated (In thousands) ASSETS Current assets: Cash and cash equivalents $ 101,987 $ 9,034 $ — $ 111,021 Accounts receivable, net 429,153 41,055 (39,294 ) 430,914 Inventories 889,816 2,122 — 891,938 Income tax receivable 32,813 — — 32,813 Prepayments and other 31,176 3,059 (1,651 ) 32,584 Total current assets 1,484,945 55,270 (40,945 ) 1,499,270 Properties, plants and equipment, net 3,345,759 1,092,443 (241,945 ) 4,196,257 Intangibles and other assets 2,438,585 459,887 288 2,898,760 Total assets $ 7,269,289 $ 1,607,600 $ (282,602 ) $ 8,594,287 LIABILITIES AND EQUITY Current liabilities: Accounts payable $ 752,085 $ 18,480 $ (39,294 ) $ 731,271 Accrued liabilities 139,914 16,074 (1,651 ) 154,337 Total current liabilities 891,999 34,554 (40,945 ) 885,608 Long-term debt 246,224 1,061,944 — 1,308,168 Liability to HEP 217,987 — (217,987 ) — Deferred income tax liabilities 543,850 458 — 544,308 Other long-term liabilities 158,479 55,381 (855 ) 213,005 Investment in HEP 125,673 — (125,673 ) — Equity – HollyFrontier 5,085,077 359,023 (357,276 ) 5,086,824 Equity – noncontrolling interest — 96,240 460,134 556,374 Total liabilities and equity $ 7,269,289 $ 1,607,600 $ (282,602 ) $ 8,594,287 Condensed Consolidating Balance Sheet December 31, 2015 HollyFrontier Corp. Before Consolidation of HEP Non-Guarantor Non-Restricted Subsidiaries (HEP Segment) Consolidations and Eliminations Consolidated (In thousands) ASSETS Current assets: Cash and cash equivalents $ 51,520 $ 15,013 $ — $ 66,533 Marketable securities 144,019 — — 144,019 Accounts receivable, net 355,020 41,075 (44,117 ) 351,978 Inventories 839,897 1,972 — 841,869 Prepayments and other 48,288 3,082 (7,704 ) 43,666 Total current assets 1,438,744 61,142 (51,821 ) 1,448,065 Properties, plants and equipment, net 3,261,494 1,099,683 (245,515 ) 4,115,662 Intangibles and other assets 2,410,879 417,574 (3,881 ) 2,824,572 Total assets $ 7,111,117 $ 1,578,399 $ (301,217 ) $ 8,388,299 LIABILITIES AND EQUITY Current liabilities: Accounts payable $ 738,024 $ 22,583 $ (44,117 ) $ 716,490 Income taxes payable 8,142 — — 8,142 Accrued liabilities 117,346 26,341 (7,704 ) 135,983 Total current liabilities 863,512 48,924 (51,821 ) 860,615 Long-term debt 31,288 1,008,752 — 1,040,040 Liability to HEP 220,998 — (220,998 ) — Deferred income tax liabilities 497,475 431 — 497,906 Other long-term liabilities 125,614 59,376 (5,025 ) 179,965 Investment in HEP 120,721 — (120,721 ) — Equity – HollyFrontier 5,251,509 366,487 (364,581 ) 5,253,415 Equity – noncontrolling interest — 94,429 461,929 556,358 Total liabilities and equity $ 7,111,117 $ 1,578,399 $ (301,217 ) $ 8,388,299 Condensed Consolidating Statement of Income and Comprehensive Income Three Months Ended March 31, 2016 HollyFrontier Corp. Before Consolidation of HEP Non-Guarantor Non-Restricted Subsidiaries (HEP Segment) Consolidations and Eliminations Consolidated (In thousands) Sales and other revenues $ 1,999,697 $ 102,010 $ (82,983 ) $ 2,018,724 Operating costs and expenses: Cost of products sold 1,703,068 — (77,905 ) 1,625,163 Lower of cost or market inventory valuation adjustment (56,121 ) — — (56,121 ) Operating expenses 230,017 26,823 (4,257 ) 252,583 General and administrative 22,530 3,091 — 25,621 Depreciation and amortization 75,421 16,029 (3,570 ) 87,880 Total operating costs and expenses 1,974,915 45,943 (85,732 ) 1,935,126 Income from operations 24,782 56,067 2,749 83,598 Other income (expense): Earnings of equity method investments 25,797 2,765 (25,797 ) 2,765 Interest income (expense) 708 (10,423 ) (2,297 ) (12,012 ) Loss on early extinguishment of debt (8,718 ) — — (8,718 ) Gain (loss) on sale of assets and other 73 (8 ) — 65 17,860 (7,666 ) (28,094 ) (17,900 ) Income before income taxes 42,642 48,401 (25,345 ) 65,698 Income tax provision 22,212 96 — 22,308 Net income 20,430 48,305 (25,345 ) 43,390 Less net income (loss) attributable to noncontrolling interest (7 ) 4,927 17,217 22,137 Net income attributable to HollyFrontier stockholders $ 20,437 $ 43,378 $ (42,562 ) $ 21,253 Comprehensive income attributable to HollyFrontier stockholders $ 20,026 $ 43,200 $ (42,384 ) $ 20,842 Condensed Consolidating Statement of Income and Comprehensive Income Three Months Ended March 31, 2015 HollyFrontier Corp. Before Consolidation of HEP Non-Guarantor Non-Restricted Subsidiaries (HEP Segment) Consolidations and Eliminations Consolidated (In thousands) Sales and other revenues $ 2,989,498 $ 89,756 $ (72,628 ) $ 3,006,626 Operating costs and expenses: Cost of products sold 2,322,881 — (71,508 ) 2,251,373 Lower of cost or market inventory valuation adjustment (6,546 ) — — (6,546 ) Operating expenses 236,003 27,966 (373 ) 263,596 General and administrative 26,279 3,290 — 29,569 Depreciation and amortization 69,258 14,290 (3,536 ) 80,012 Total operating costs and expenses 2,647,875 45,546 (75,417 ) 2,618,004 Income from operations 341,623 44,210 2,789 388,622 Other income (expense): Earnings (loss) of equity method investments 11,901 734 (20,442 ) (7,807 ) Interest income (expense) 1,922 (8,767 ) (2,347 ) (9,192 ) Gain on sale of assets and other 608 158 — 766 14,431 (7,875 ) (22,789 ) (16,233 ) Income before income taxes 356,054 36,335 (20,000 ) 372,389 Income tax provision 129,627 101 — 129,728 Net income 226,427 36,234 (20,000 ) 242,661 Less net income (loss) attributable to noncontrolling interest (7 ) 4,027 11,765 15,785 Net income attributable to HollyFrontier stockholders $ 226,434 $ 32,207 $ (31,765 ) $ 226,876 Comprehensive income attributable to HollyFrontier stockholders $ 214,912 $ 31,912 $ (31,470 ) $ 215,354 Condensed Consolidating Statement of Cash Flows Three Months Ended March 31, 2016 HollyFrontier Corp. Before Consolidation of HEP Non-Guarantor Non-Restricted Subsidiaries (HEP Segment) Consolidations and Eliminations Consolidated (In thousands) Cash flows from operating activities $ (8,257 ) $ 39,372 $ (24,479 ) $ 6,636 Cash flows from investing activities Additions to properties, plants and equipment (131,700 ) — — (131,700 ) Additions to properties, plants and equipment – HEP — (17,873 ) — (17,873 ) Proceeds from sale of assets 258 — — 258 Purchases of marketable securities (4,082 ) — — (4,082 ) Sales and maturities of marketable securities 148,204 — — 148,204 12,680 (17,873 ) — (5,193 ) Cash flows from financing activities Net borrowings under credit agreements — 53,000 — 53,000 Net proceeds from issuance of senior notes 246,690 — — 246,690 Inventory repurchase obligation 693 — — 693 Purchase of treasury stock (133,430 ) — — (133,430 ) Dividends (58,602 ) — — (58,602 ) Distributions to noncontrolling interest — (46,210 ) 24,479 (21,731 ) Repayment of financing obligation — (39,500 ) — (39,500 ) Contribution from general partner (9,122 ) 9,122 — — Other, net (185 ) (3,890 ) — (4,075 ) 46,044 (27,478 ) 24,479 43,045 Cash and cash equivalents Increase (decrease) for the period 50,467 (5,979 ) — 44,488 Beginning of period 51,520 15,013 — 66,533 End of period $ 101,987 $ 9,034 $ — $ 111,021 Condensed Consolidating Statement of Cash Flows Three Months Ended March 31, 2015 HollyFrontier Corp. Before Consolidation of HEP Non-Guarantor Non-Restricted Subsidiaries (HEP Segment) Consolidations and Eliminations Consolidated (In thousands) Cash flows from operating activities $ 207,509 $ 61,026 $ (21,643 ) $ 246,892 Cash flows from investing activities: Additions to properties, plants and equipment (120,892 ) — — (120,892 ) Additions to properties, plants and equipment – HEP — (51,727 ) — (51,727 ) Purchases of marketable securities (118,816 ) — — (118,816 ) Sales and maturities of marketable securities 178,524 — — 178,524 Proceeds from sale of assets 814 — — 814 (60,370 ) (51,727 ) — (112,097 ) Cash flows from financing activities: Net borrowings under credit agreement – HEP — 23,000 — 23,000 Inventory repurchase obligation 7,434 — — 7,434 Purchase of treasury stock (55,065 ) — — (55,065 ) Dividends (62,335 ) — — (62,335 ) Distributions to noncontrolling interest — (42,115 ) 21,643 (20,472 ) Contribution from general partner (13,035 ) 13,035 — — Other, net (1,003 ) (247 ) — (1,250 ) (124,004 ) (6,327 ) 21,643 (108,688 ) Cash and cash equivalents Increase (decrease) for the period: 23,135 2,972 — 26,107 Beginning of period 565,155 2,830 — 567,985 End of period $ 588,290 $ 5,802 $ — $ 594,092

Description of Business and P23

Description of Business and Presentation of Financial Statements (Policy)	3 Months Ended
	Mar. 31, 2016
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Accounts Receivable	Accounts Receivable: Our accounts receivable consist of amounts due from customers that are primarily companies in the petroleum industry. Credit is extended based on our evaluation of the customer’s financial condition, and in certain circumstances collateral, such as letters of credit or guarantees, is required. We reserve for doubtful accounts based on our historical loss experience as well as specific accounts identified as high risk, which historically have been minimal. Credit losses are charged to the allowance for doubtful accounts when an account is deemed uncollectible. Our allowance for doubtful accounts was $2.3 million at both March 31, 2016 and December 31, 2015 .
Inventories	Inventories: Inventories are stated at the lower of cost, using the last-in, first-out (“LIFO”) method for crude oil, unfinished and finished refined products and the average cost method for materials and supplies, or market. In periods of rapidly declining prices, LIFO inventories may have to be written down to market value due to the higher costs assigned to LIFO layers in prior periods. In addition, the use of the LIFO inventory method may result in increases or decreases to cost of sales in years that inventory volumes decline as the result of charging cost of sales with LIFO inventory costs generated in prior periods. An actual valuation of inventory under the LIFO method is made at the end of each year based on the inventory levels at that time. Accordingly, interim LIFO calculations are based on management’s estimates of expected year-end inventory levels and are subject to the final year-end LIFO inventory valuation.
Goodwill	Goodwill: We have goodwill that primarily arose from our merger with Frontier Oil Corporation on July 1, 2011. Goodwill represents the excess of the cost of an acquired entity over the fair value of the assets acquired and liabilities assumed. Goodwill is not subject to amortization and is tested annually or more frequently if events or circumstances indicate the possibility of impairment. As of March 31, 2016 , 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 possible that the goodwill related to our Cheyenne Refinery will be determined to be impaired at some point in the future. A prolonged, moderate decrease in operating margins could potentially result in impairment to goodwill allocated to our Cheyenne reporting unit. Such impairment charges could be material. Inventory Repurchase Obligations: We periodically enter into same-party sell / buy transactions, whereby we sell certain refined product inventory and subsequently repurchase the inventory in order to facilitate delivery to certain locations. Such sell / buy transactions are accounted as inventory repurchase obligations under which proceeds received under the initial sell is recognized as an inventory repurchase obligation that is subsequently reversed when the inventory is repurchased. For the three months ended March 31, 2016 and 2015, we received proceeds of $14.3 million and $30.2 million , respectively, and repaid $13.6 million and $22.8 million , respectively, under these sell / buy transactions.
New Accounting Pronouncements	New Accounting Pronouncements Leases In February 2016, Accounting Standard Update (“ASU”) 2016-02, “Leases” was issued requiring leases to be measured and recognized as a lease liability, with a corresponding right-of-use asset on the balance sheet. This standard has an effective date of January 1, 2019, and we are evaluating the impact of this standard. Consolidation In February 2015, ASU 2015-02, “Consolidation” was issued to improve consolidation guidance for certain legal entities. It modifies the evaluation of whether limited partnerships and similar legal entities are VIEs or voting interest entities, eliminates the presumption that a general partner should consolidate a limited partnership, affects the consolidation analysis of reporting entities involved with VIEs, particularly those that have fee arrangements and related party provisions and provides a scope exception from consolidation guidance for certain reporting entities that comply with or operate in accordance with requirements that are similar to those included in Rule 2a-7 of the Investment Company Act of 1940 for registered money market funds. We adopted this standard effective January 1, 2016, which did not affect our financial position or results of operations. Revenue Recognition In May 2014, ASU 2014-09, “Revenue from Contracts with Customers” was issued requiring revenue to be recognized when promised goods or services are transferred to customers in an amount that reflects the expected consideration for these goods or services. This standard has an effective date of January 1, 2018, and we are evaluating the impact of this standard.

Financial Instruments (Tables)

Financial Instruments (Tables)	3 Months Ended
	Mar. 31, 2016
Financial Instruments, Owned, at Fair Value [Abstract]
Estimated Fair Values Of Debt Instruments	The carrying amounts and estimated fair values of marketable securities, derivative instruments and senior notes at March 31, 2016 and December 31, 2015 were as follows: Fair Value by Input Level Carrying Amount Fair Value Level 1 Level 2 Level 3 (In thousands) March 31, 2016 Assets: Commodity price swaps $ 33,619 $ 33,619 $ — $ 33,619 $ — Forward contracts 4,197 4,197 — 4,197 — Total assets $ 37,816 $ 37,816 $ — $ 37,816 $ — Liabilities: NYMEX futures contracts $ 768 $ 768 $ 768 $ — $ — Commodity price swaps 91,295 91,295 — 91,295 — Forward contracts 6,947 6,947 — 6,947 — HollyFrontier senior notes 246,224 250,313 — 250,313 — HEP senior notes 296,944 295,500 — 295,500 — HEP interest rate swaps 263 263 — 263 — Total liabilities $ 642,441 $ 645,086 $ 768 $ 644,318 $ — December 31, 2015 Assets: Marketable securities $ 144,019 $ 144,019 $ — $ 144,019 $ — NYMEX futures contracts 3,469 3,469 3,469 — — Commodity price swaps 37,097 37,097 — 37,097 — HEP interest rate swaps 304 304 — 304 — Total assets $ 184,889 $ 184,889 $ 3,469 $ 181,420 $ — Liabilities: Commodity price swaps $ 98,930 $ 98,930 $ — $ 98,930 $ — HEP senior notes 296,752 295,500 — 295,500 — HEP interest rate swaps 114 114 — 114 — Total liabilities $ 395,796 $ 394,544 $ — $ 394,544 $ —
Fair Value, Recurring Basis, Level 3 Roll Forward	The following table presents the changes in fair value of our Level 3 assets and liabilities (all related to derivative instruments) for the three months ended March 31, 2015 : Three Months Ended Level 3 Instruments (In thousands) Liability balance at beginning of period $ — Change in fair value: Recognized in other comprehensive income (2,552 ) Settlement date fair value of contractual maturities: Recognized in sales and other revenues — Liability balance at end of period $ (2,552 )

Earnings Per Share (Tables)

Earnings Per Share (Tables)	3 Months Ended
	Mar. 31, 2016
Earnings Per Share [Abstract]
Schedule Of Earnings Per Share	The following is a reconciliation of the denominators of the basic and diluted per share computations for net income attributable to HollyFrontier stockholders: Three Months Ended 2016 2015 (In thousands, except per share data) Net income attributable to HollyFrontier stockholders $ 21,253 $ 226,876 Participating securities’ share in earnings 216 644 Net income attributable to common shares $ 21,037 $ 226,232 Average number of shares of common stock outstanding 176,737 195,069 Effect of dilutive variable restricted shares and performance share units (1) 47 52 Average number of shares of common stock outstanding assuming dilution 176,784 195,121 Basic earnings per share $ 0.12 $ 1.16 Diluted earnings per share $ 0.12 $ 1.16 (1) Excludes anti-dilutive restricted and performance share units of: 177 412

Stock-Based Compensation (Table

Stock-Based Compensation (Tables)	3 Months Ended
	Mar. 31, 2016
Share-based Compensation [Abstract]
Summary Of Restricted Stock Activity	A summary of restricted stock and restricted stock unit activity and changes during the three months ended March 31, 2016 is presented below: Restricted Stock and Restricted Stock Units Grants Weighted Average Grant Date Fair Value Aggregate Intrinsic Value ($000) Outstanding at January 1, 2016 (non-vested) 722,525 $ 48.35 Granted 5,628 38.26 Forfeited (9,168 ) 48.08 Outstanding at March 31, 2016 (non-vested) 718,985 $ 47.42 $ 25,395
Summary Of Performance Share Unit Activity	A summary of performance share unit activity and changes during the three months ended March 31, 2016 is presented below: Performance Share Units Grants Outstanding at January 1, 2016 (non-vested) 637,938 Granted 2,861 Forfeited (144,362 ) Outstanding at March 31, 2016 (non-vested) 496,437

Cash and Cash Equivalents and27

Cash and Cash Equivalents and Investments in Marketable Securities (Tables)	3 Months Ended
	Mar. 31, 2016
Cash, Cash Equivalents, and Short-term Investments [Abstract]
Available-For-Sale Securities	The following is a summary of our marketable securities as of December 31, 2015: Amortized Cost Gross Unrealized Gain Gross Unrealized Loss Fair Value (Net Carrying Amount) (In thousands) December 31, 2015 Commercial paper $ 22,876 $ 1 $ (2 ) $ 22,875 Corporate debt securities 32,311 — (41 ) 32,270 State and political subdivisions debt securities 88,935 6 (67 ) 88,874 Total marketable securities $ 144,122 $ 7 $ (110 ) $ 144,019

Inventories (Tables)

Inventories (Tables)	3 Months Ended
	Mar. 31, 2016
Inventory, Net [Abstract]
Inventory Components	Inventory consists of the following components: March 31, December 31, 2015 (In thousands) Crude oil $ 523,754 $ 518,922 Other raw materials and unfinished products (1) 184,804 214,832 Finished products (2) 622,578 603,568 Lower of cost or market reserve (568,336 ) (624,457 ) Process chemicals (3) 5,558 4,477 Repair and maintenance supplies and other 123,580 124,527 Total inventory $ 891,938 $ 841,869 (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)	3 Months Ended
	Mar. 31, 2016
Debt Disclosure [Abstract]
Carrying Amounts Of Long-Term Debt	The carrying amounts of long-term debt are as follows: March 31, December 31, (In thousands) HollyFrontier 5.875% Senior Notes Principal $ 250,000 $ — Unamortized discount and debt issuance costs (3,776 ) — 246,224 — Financing Obligation — 31,288 Total HollyFrontier long-term debt 246,224 31,288 HEP Credit Agreement 765,000 712,000 HEP 6.5% Senior Notes Principal 300,000 300,000 Unamortized discount and debt issuance costs (3,056 ) (3,248 ) 296,944 296,752 Total HEP long-term debt 1,061,944 1,008,752 Total long-term debt $ 1,308,168 $ 1,040,040

Derivative Instruments And He30

Derivative Instruments And Hedging Activities (Tables)	3 Months Ended
	Mar. 31, 2016
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Schedule of Derivative Instruments, Gain (Loss) in Statement of Financial Performance	The following table presents the pre-tax effect on other comprehensive income (“OCI”) and earnings due to fair value adjustments and maturities of commodity price swaps and forward sales under hedge accounting: Unrealized Gain (Loss) Recognized in OCI Gain (Loss) Recognized in Earnings Due to Settlements Gain (Loss) Attributable to Hedge Ineffectiveness Recognized in Earnings Location Amount Location Amount (In thousands) Three Months Ended March 31, 2016 Change in fair value $ (11,921 ) Sales and other revenues $ (4,756 ) Loss reclassified to earnings due to settlements 11,056 Cost of products sold — Amortization of discontinued hedges reclassified to earnings 270 Operating expenses (6,570 ) Operating expenses $ — Total $ (595 ) $ (11,326 ) $ — Three Months Ended March 31, 2015 Change in fair value $ (14,148 ) Sales and other revenues $ 49,180 Sales and other revenues $ (133 ) Gain reclassified to earnings due to settlements (4,692 ) Cost of products sold (40,769 ) Cost of products sold 1,244 Amortization of discontinued hedges reclassified to earnings 270 Operating expenses (3,989 ) Operating expenses 547 Total $ (18,570 ) $ 4,422 $ 1,658
Schedule of Notional Amounts of Outstanding Derivatives Serving as Cash Flow Hedges	As of March 31, 2016 , we have the following notional contract volumes related to outstanding derivative instruments serving as cash flow hedges against price risk on forecasted transactions: Notional Contract Volumes by Year of Maturity Derivative Instruments Total Outstanding Notional 2016 2017 Unit of Measure Natural gas price swaps - long 16,800,000 7,200,000 9,600,000 MMBTU Forward gasoline and diesel contracts - short 975,000 975,000 — 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 Location of Gain (Loss) Recognized in Income 2016 2015 (In thousands) Cost of products sold $ 474 $ 22,281 Operating expenses (3,469 ) (296 ) Total $ (2,995 ) $ 21,985
Schedule of Notional Amounts of Outstanding Derivatives Serving as Economic Hedges	As of March 31, 2016 , 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 2016 2017 Unit of Measure Crude price swaps (basis spread) - long 8,800,000 8,800,000 — Barrels Natural gas price swaps (basis spread) - long 18,039,000 7,731,000 10,308,000 MMBTU Natural gas price swaps - long 16,800,000 7,200,000 9,600,000 MMBTU Natural gas price swaps - short 16,800,000 7,200,000 9,600,000 MMBTU NYMEX futures (WTI) - short 910,000 910,000 — Barrels Forward gasoline and diesel contracts - long 1,175,000 1,175,000 — Barrels
Schedule of Interest Rate Hedges	The following table presents the pre-tax effect on other comprehensive income and earnings due to fair value adjustments and maturities of HEP’s interest rate swaps under hedge accounting: Unrealized Gain (Loss) Recognized in OCI Loss Recognized in Earnings Due to Settlements Location Amount (In thousands) Three Months Ended March 31, 2016 Interest rate swaps Change in fair value $ (683 ) Loss reclassified to earnings due to settlements 230 Interest expense $ (230 ) Total $ (453 ) $ (230 ) Three Months Ended March 31, 2015 Interest rate swaps Change in fair value $ (1,280 ) Loss reclassified to earnings due to settlements 531 Interest expense $ (531 ) Total $ (749 ) $ (531 )
Schedule of Fair Value and Balance Sheet Location of Outstanding Derivatives	The following table presents the fair value and balance sheet locations of our outstanding derivative instruments. These amounts are presented on a gross basis with offsetting balances that reconcile to a net asset or liability position in our consolidated balance sheets. We present on a net basis to reflect the net settlement of these positions in accordance with provisions of our master netting arrangements. Derivatives in Net Asset Position Derivatives in Net Liability Position Gross Assets Gross Liabilities Offset in Balance Sheet Net Assets Recognized in Balance Sheet Gross Liabilities Gross Assets Offset in Balance Sheet Net Liabilities Recognized in Balance Sheet (In thousands) March 31, 2016 Derivatives designated as cash flow hedging instruments: Commodity price swap contracts $ — $ — $ — $ 35,810 $ — $ 35,810 Forward contracts — — — 2,587 — 2,587 Interest rate swap contracts — — — 263 — 263 $ — $ — $ — $ 38,660 $ — $ 38,660 Derivatives not designated as cash flow hedging instruments: Commodity price swap contracts $ — $ — $ — $ 55,505 $ (33,639 ) $ 21,866 NYMEX futures contracts — — — 768 — 768 Forward contracts 4,197 — 4,197 4,360 — 4,360 $ 4,197 $ — $ 4,197 $ 60,633 $ (33,639 ) $ 26,994 Total net balance $ 4,197 $ 65,654 Balance sheet classification: Accrued liabilities $ 45,911 Prepayment and other $ 4,197 Other long-term liabilities 19,743 $ 4,197 $ 65,654 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, 2015 Derivatives designated as cash flow hedging instruments: Commodity price swap contracts $ — $ — $ — $ 38,755 $ — $ 38,755 Interest rate swap contracts 304 — 304 114 — 114 $ 304 $ — $ 304 $ 38,869 $ — $ 38,869 Derivatives not designated as cash flow hedging instruments: Commodity price swap contracts $ — $ — $ — $ 60,196 $ (37,118 ) $ 23,078 NYMEX futures contracts 3,469 — 3,469 — — — $ 3,469 $ — $ 3,469 $ 60,196 $ (37,118 ) $ 23,078 Total net balance $ 3,773 $ 61,947 Balance sheet classification: Prepayment and other $ 3,469 Accrued liabilities $ 36,976 Intangibles and other 304 Other long-term liabilities 24,971 $ 3,773 $ 61,947

Equity (Tables)

Equity (Tables)	3 Months Ended
	Mar. 31, 2016
Stockholders' Equity Note [Abstract]
Changes To Equity	Changes to equity during the three months ended March 31, 2016 are presented below: HollyFrontier Stockholders’ Equity Noncontrolling Interest Total Equity (In thousands) Balance at December 31, 2015 $ 5,253,415 $ 556,358 $ 5,809,773 Net income 21,253 22,137 43,390 Dividends (58,402 ) — (58,402 ) Distributions to noncontrolling interest holders — (21,731 ) (21,731 ) Other comprehensive loss, net of tax (411 ) (275 ) (686 ) Equity-based compensation 2,575 651 3,226 Tax attributable to equity-based compensation (2,225 ) — (2,225 ) Purchase of treasury stock (129,381 ) — (129,381 ) Purchase of HEP units for restricted grants — (784 ) (784 ) Other — 18 18 Balance at March 31, 2016 $ 5,086,824 $ 556,374 $ 5,643,198

Other Comprehensive Income (L32

Other Comprehensive Income (Loss) (Tables)	3 Months Ended
	Mar. 31, 2016
Other Comprehensive Income (Loss) [Abstract]
Components And Allocated Tax Effects Of Other Comprehensive Income (Loss)	The components and allocated tax effects of other comprehensive income (loss) are as follows: Before-Tax Tax Expense (Benefit) After-Tax (In thousands) Three Months Ended March 31, 2016 Net unrealized gain on marketable securities $ 101 $ 40 $ 61 Net unrealized loss on hedging instruments (1,048 ) (301 ) (747 ) Other comprehensive loss (947 ) (261 ) (686 ) Less other comprehensive loss attributable to noncontrolling interest (275 ) — (275 ) Other comprehensive loss attributable to HollyFrontier stockholders $ (672 ) $ (261 ) $ (411 ) Three Months Ended March 31, 2015 Net unrealized gain on marketable securities $ 68 $ 27 $ 41 Net unrealized loss on hedging instruments (19,319 ) (7,302 ) (12,017 ) Other comprehensive loss (19,251 ) (7,275 ) (11,976 ) Less other comprehensive loss attributable to noncontrolling interest (454 ) — (454 ) Other comprehensive loss attributable to HollyFrontier stockholders $ (18,797 ) $ (7,275 ) $ (11,522 )
Reclassifications from Other Comprehensive Income to Income Statement	The following table presents the income statement line item effects for reclassifications out of accumulated other comprehensive income (“AOCI”): AOCI Component Gain (Loss) Reclassified From AOCI Income Statement Line Item (In thousands) Three Months Ended March 31, 2016 2015 Marketable securities $ (23 ) $ (2 ) Interest income — 42 Gain on sale of assets (23 ) 40 (9 ) 15 Income tax expense (benefit) (14 ) 25 Net of tax Hedging instruments: Commodity price swaps (4,756 ) 49,180 Sales and other revenues — (40,769 ) Cost of products sold (6,570 ) (3,989 ) Operating expenses Interest rate swaps (230 ) (531 ) Interest expense (11,556 ) 3,891 (4,418 ) 1,630 Income tax expense (benefit) (7,138 ) 2,261 Net of tax 139 322 Noncontrolling interest (6,999 ) 2,583 Net of tax and noncontrolling interest Total reclassifications for the period $ (7,013 ) $ 2,608
Accumulated Other Comprehensive Loss In Equity	Accumulated other comprehensive loss in the equity section of our consolidated balance sheets includes: March 31, December 31, (In thousands) Unrealized gain on post-retirement benefit obligations $ 20,737 $ 20,737 Unrealized loss on marketable securities — (61 ) Unrealized loss on hedging instruments, net of noncontrolling interest (25,303 ) (24,831 ) Accumulated other comprehensive loss $ (4,566 ) $ (4,155 )

Post-retirement Plan (Tables)

Post-retirement Plan (Tables)	3 Months Ended
	Mar. 31, 2016
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 2016 2015 (In thousands) Service cost – benefit earned during the period $ 324 $ 424 Interest cost on projected benefit obligations 197 205 Amortization of prior service credit (871 ) (871 ) Amortization of net loss — 46 Net periodic post-retirement credit $ (350 ) $ (196 )

Segment Information (Tables)

Segment Information (Tables)	3 Months Ended
	Mar. 31, 2016
Segment Reporting [Abstract]
Schedule Of Segment Reporting Information	Refining HEP (1) Corporate and Other Consolidations and Eliminations Consolidated Total (In thousands) Three Months Ended March 31, 2016 Sales and other revenues $ 1,999,587 $ 102,010 $ 110 $ (82,983 ) $ 2,018,724 Depreciation and amortization $ 68,878 $ 16,029 $ 3,180 $ (207 ) $ 87,880 Income (loss) from operations $ 55,000 $ 56,067 $ (26,855 ) $ (614 ) $ 83,598 Capital expenditures $ 129,018 $ 17,873 $ 2,682 $ — $ 149,573 Three Months Ended March 31, 2015 Sales and other revenues $ 2,989,280 $ 89,756 $ 218 $ (72,628 ) $ 3,006,626 Depreciation and amortization $ 63,275 $ 14,290 $ 2,654 $ (207 ) $ 80,012 Income (loss) from operations $ 373,901 $ 44,210 $ (28,949 ) $ (540 ) $ 388,622 Capital expenditures $ 116,467 $ 51,727 $ 4,425 $ — $ 172,619 March 31, 2016 Cash, cash equivalents and total investments in marketable securities $ 13,726 $ 9,034 $ 88,261 $ — $ 111,021 Total assets $ 7,053,257 $ 1,607,600 $ 225,375 $ (291,945 ) $ 8,594,287 Long-term debt $ — $ 1,061,944 $ 246,224 $ — $ 1,308,168 December 31, 2015 Cash, cash equivalents and total investments in marketable securities $ 91 $ 15,013 $ 195,448 $ — $ 210,552 Total assets $ 6,831,235 $ 1,578,399 $ 289,225 $ (310,560 ) $ 8,388,299 Long-term debt $ — $ 1,008,752 $ 31,288 $ — $ 1,040,040 (1) HEP acquired the crude oil tanks at our Tulsa Refineries in March 2016. As a result, we have recast our 2015 HEP segment information to include these assets and related capital expenditures that were previously presented under the Refining segment.

Additional Financial Informat35

Additional Financial Information (Tables)	3 Months Ended
	Mar. 31, 2016
Supplemental Guarantor / Non-Guarantor Financial Information [Abstract]
Condensed Consolidating Balance Sheet	Condensed Consolidating Balance Sheet March 31, 2016 HollyFrontier Corp. Before Consolidation of HEP Non-Guarantor Non-Restricted Subsidiaries (HEP Segment) Consolidations and Eliminations Consolidated (In thousands) ASSETS Current assets: Cash and cash equivalents $ 101,987 $ 9,034 $ — $ 111,021 Accounts receivable, net 429,153 41,055 (39,294 ) 430,914 Inventories 889,816 2,122 — 891,938 Income tax receivable 32,813 — — 32,813 Prepayments and other 31,176 3,059 (1,651 ) 32,584 Total current assets 1,484,945 55,270 (40,945 ) 1,499,270 Properties, plants and equipment, net 3,345,759 1,092,443 (241,945 ) 4,196,257 Intangibles and other assets 2,438,585 459,887 288 2,898,760 Total assets $ 7,269,289 $ 1,607,600 $ (282,602 ) $ 8,594,287 LIABILITIES AND EQUITY Current liabilities: Accounts payable $ 752,085 $ 18,480 $ (39,294 ) $ 731,271 Accrued liabilities 139,914 16,074 (1,651 ) 154,337 Total current liabilities 891,999 34,554 (40,945 ) 885,608 Long-term debt 246,224 1,061,944 — 1,308,168 Liability to HEP 217,987 — (217,987 ) — Deferred income tax liabilities 543,850 458 — 544,308 Other long-term liabilities 158,479 55,381 (855 ) 213,005 Investment in HEP 125,673 — (125,673 ) — Equity – HollyFrontier 5,085,077 359,023 (357,276 ) 5,086,824 Equity – noncontrolling interest — 96,240 460,134 556,374 Total liabilities and equity $ 7,269,289 $ 1,607,600 $ (282,602 ) $ 8,594,287 Condensed Consolidating Balance Sheet December 31, 2015 HollyFrontier Corp. Before Consolidation of HEP Non-Guarantor Non-Restricted Subsidiaries (HEP Segment) Consolidations and Eliminations Consolidated (In thousands) ASSETS Current assets: Cash and cash equivalents $ 51,520 $ 15,013 $ — $ 66,533 Marketable securities 144,019 — — 144,019 Accounts receivable, net 355,020 41,075 (44,117 ) 351,978 Inventories 839,897 1,972 — 841,869 Prepayments and other 48,288 3,082 (7,704 ) 43,666 Total current assets 1,438,744 61,142 (51,821 ) 1,448,065 Properties, plants and equipment, net 3,261,494 1,099,683 (245,515 ) 4,115,662 Intangibles and other assets 2,410,879 417,574 (3,881 ) 2,824,572 Total assets $ 7,111,117 $ 1,578,399 $ (301,217 ) $ 8,388,299 LIABILITIES AND EQUITY Current liabilities: Accounts payable $ 738,024 $ 22,583 $ (44,117 ) $ 716,490 Income taxes payable 8,142 — — 8,142 Accrued liabilities 117,346 26,341 (7,704 ) 135,983 Total current liabilities 863,512 48,924 (51,821 ) 860,615 Long-term debt 31,288 1,008,752 — 1,040,040 Liability to HEP 220,998 — (220,998 ) — Deferred income tax liabilities 497,475 431 — 497,906 Other long-term liabilities 125,614 59,376 (5,025 ) 179,965 Investment in HEP 120,721 — (120,721 ) — Equity – HollyFrontier 5,251,509 366,487 (364,581 ) 5,253,415 Equity – noncontrolling interest — 94,429 461,929 556,358 Total liabilities and equity $ 7,111,117 $ 1,578,399 $ (301,217 ) $ 8,388,299
Condensed Consolidating Statement of Income and Comprehensive Income	Condensed Consolidating Statement of Income and Comprehensive Income Three Months Ended March 31, 2016 HollyFrontier Corp. Before Consolidation of HEP Non-Guarantor Non-Restricted Subsidiaries (HEP Segment) Consolidations and Eliminations Consolidated (In thousands) Sales and other revenues $ 1,999,697 $ 102,010 $ (82,983 ) $ 2,018,724 Operating costs and expenses: Cost of products sold 1,703,068 — (77,905 ) 1,625,163 Lower of cost or market inventory valuation adjustment (56,121 ) — — (56,121 ) Operating expenses 230,017 26,823 (4,257 ) 252,583 General and administrative 22,530 3,091 — 25,621 Depreciation and amortization 75,421 16,029 (3,570 ) 87,880 Total operating costs and expenses 1,974,915 45,943 (85,732 ) 1,935,126 Income from operations 24,782 56,067 2,749 83,598 Other income (expense): Earnings of equity method investments 25,797 2,765 (25,797 ) 2,765 Interest income (expense) 708 (10,423 ) (2,297 ) (12,012 ) Loss on early extinguishment of debt (8,718 ) — — (8,718 ) Gain (loss) on sale of assets and other 73 (8 ) — 65 17,860 (7,666 ) (28,094 ) (17,900 ) Income before income taxes 42,642 48,401 (25,345 ) 65,698 Income tax provision 22,212 96 — 22,308 Net income 20,430 48,305 (25,345 ) 43,390 Less net income (loss) attributable to noncontrolling interest (7 ) 4,927 17,217 22,137 Net income attributable to HollyFrontier stockholders $ 20,437 $ 43,378 $ (42,562 ) $ 21,253 Comprehensive income attributable to HollyFrontier stockholders $ 20,026 $ 43,200 $ (42,384 ) $ 20,842 Condensed Consolidating Statement of Income and Comprehensive Income Three Months Ended March 31, 2015 HollyFrontier Corp. Before Consolidation of HEP Non-Guarantor Non-Restricted Subsidiaries (HEP Segment) Consolidations and Eliminations Consolidated (In thousands) Sales and other revenues $ 2,989,498 $ 89,756 $ (72,628 ) $ 3,006,626 Operating costs and expenses: Cost of products sold 2,322,881 — (71,508 ) 2,251,373 Lower of cost or market inventory valuation adjustment (6,546 ) — — (6,546 ) Operating expenses 236,003 27,966 (373 ) 263,596 General and administrative 26,279 3,290 — 29,569 Depreciation and amortization 69,258 14,290 (3,536 ) 80,012 Total operating costs and expenses 2,647,875 45,546 (75,417 ) 2,618,004 Income from operations 341,623 44,210 2,789 388,622 Other income (expense): Earnings (loss) of equity method investments 11,901 734 (20,442 ) (7,807 ) Interest income (expense) 1,922 (8,767 ) (2,347 ) (9,192 ) Gain on sale of assets and other 608 158 — 766 14,431 (7,875 ) (22,789 ) (16,233 ) Income before income taxes 356,054 36,335 (20,000 ) 372,389 Income tax provision 129,627 101 — 129,728 Net income 226,427 36,234 (20,000 ) 242,661 Less net income (loss) attributable to noncontrolling interest (7 ) 4,027 11,765 15,785 Net income attributable to HollyFrontier stockholders $ 226,434 $ 32,207 $ (31,765 ) $ 226,876 Comprehensive income attributable to HollyFrontier stockholders $ 214,912 $ 31,912 $ (31,470 ) $ 215,354
Condensed Consolidating Statement of Cash Flows	Condensed Consolidating Statement of Cash Flows Three Months Ended March 31, 2016 HollyFrontier Corp. Before Consolidation of HEP Non-Guarantor Non-Restricted Subsidiaries (HEP Segment) Consolidations and Eliminations Consolidated (In thousands) Cash flows from operating activities $ (8,257 ) $ 39,372 $ (24,479 ) $ 6,636 Cash flows from investing activities Additions to properties, plants and equipment (131,700 ) — — (131,700 ) Additions to properties, plants and equipment – HEP — (17,873 ) — (17,873 ) Proceeds from sale of assets 258 — — 258 Purchases of marketable securities (4,082 ) — — (4,082 ) Sales and maturities of marketable securities 148,204 — — 148,204 12,680 (17,873 ) — (5,193 ) Cash flows from financing activities Net borrowings under credit agreements — 53,000 — 53,000 Net proceeds from issuance of senior notes 246,690 — — 246,690 Inventory repurchase obligation 693 — — 693 Purchase of treasury stock (133,430 ) — — (133,430 ) Dividends (58,602 ) — — (58,602 ) Distributions to noncontrolling interest — (46,210 ) 24,479 (21,731 ) Repayment of financing obligation — (39,500 ) — (39,500 ) Contribution from general partner (9,122 ) 9,122 — — Other, net (185 ) (3,890 ) — (4,075 ) 46,044 (27,478 ) 24,479 43,045 Cash and cash equivalents Increase (decrease) for the period 50,467 (5,979 ) — 44,488 Beginning of period 51,520 15,013 — 66,533 End of period $ 101,987 $ 9,034 $ — $ 111,021 Condensed Consolidating Statement of Cash Flows Three Months Ended March 31, 2015 HollyFrontier Corp. Before Consolidation of HEP Non-Guarantor Non-Restricted Subsidiaries (HEP Segment) Consolidations and Eliminations Consolidated (In thousands) Cash flows from operating activities $ 207,509 $ 61,026 $ (21,643 ) $ 246,892 Cash flows from investing activities: Additions to properties, plants and equipment (120,892 ) — — (120,892 ) Additions to properties, plants and equipment – HEP — (51,727 ) — (51,727 ) Purchases of marketable securities (118,816 ) — — (118,816 ) Sales and maturities of marketable securities 178,524 — — 178,524 Proceeds from sale of assets 814 — — 814 (60,370 ) (51,727 ) — (112,097 ) Cash flows from financing activities: Net borrowings under credit agreement – HEP — 23,000 — 23,000 Inventory repurchase obligation 7,434 — — 7,434 Purchase of treasury stock (55,065 ) — — (55,065 ) Dividends (62,335 ) — — (62,335 ) Distributions to noncontrolling interest — (42,115 ) 21,643 (20,472 ) Contribution from general partner (13,035 ) 13,035 — — Other, net (1,003 ) (247 ) — (1,250 ) (124,004 ) (6,327 ) 21,643 (108,688 ) Cash and cash equivalents Increase (decrease) for the period: 23,135 2,972 — 26,107 Beginning of period 565,155 2,830 — 567,985 End of period $ 588,290 $ 5,802 $ — $ 594,092

Description of Business and P36

Description of Business and Presentation of Financial Statements (Details)	3 Months Ended
	Mar. 31, 2016USD ($)Petroleum_Refineriesmi	Mar. 31, 2015USD ($)	Dec. 31, 2015USD ($)
Ownership Interest By Project Type [Line Items]
Number of refineries located in Tulsa, Oklahoma | Petroleum_Refineries	2
Refinery Distance From Main City [Miles] | mi	65
Allowance for doubtful accounts reserve	$ 2,300,000
Goodwill, Impairment Loss	0
Goodwill	2,331,781,000		$ 2,331,781,000
Purchase and Supply Commitment, Excluding Long-term Commitment [Text Block]	14,300,000	$ 30,200,000
Payments under Inventory Repurchase Agreements	$ 13,600,000	$ 22,800,000
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
Frontier Pipeline [Member]
Ownership Interest By Project Type [Line Items]
Equity Method Investment, Ownership Percentage	50.00%
SLC Pipeline [Member]
Ownership Interest By Project Type [Line Items]
Equity Method Investment, Ownership Percentage	25.00%
UNEV Pipeline [Member]
Ownership Interest By Project Type [Line Items]
Equity Method Investment, Ownership Percentage	75.00%

Holly Energy Partners (Details)

Holly Energy Partners (Details) $ in Thousands	3 Months Ended
	Mar. 31, 2016USD ($)Customersmi	Mar. 31, 2015USD ($)
Holly Energy Partners Entity [Line Items]
Business Acquisition, Transaction Costs	$ (39,500)
Deferred Credits and Other Liabilities, Noncurrent	38,900
Payments to Acquire Property, Plant, and Equipment	131,700	$ 120,892
Extinguishment of Debt, Amount	30,800
Loss on early extinguishment of debt	$ (8,718)	0
HEP [Member]
Holly Energy Partners Entity [Line Items]
Percentage of ownership in variable interest entity	39.00%
Percentage of general partner interest	2.00%
Number of primary customers | Customers	2
Percentage of revenue Holly Corp represents	81.00%
Business Acquisition, Transaction Costs	$ (39,500)	0
Payments to Acquire Property, Plant, and Equipment	17,873	$ 51,727
Long-term Purchase Commitment, Amount	$ 263,700
Osage Pipeline [Member] [Member]
Holly Energy Partners Entity [Line Items]
Limited Liability Company (LLC) or Limited Partnership (LP), Members or Limited Partners, Ownership Interest	50.00%
Length of pipeline (miles) | mi	135

Fair Value Measurements (Estima

Fair Value Measurements (Estimated Fair Values Of Debt Instruments) (Details) - USD ($) $ in Thousands	Mar. 31, 2016	Dec. 31, 2015
Debt Instrument [Line Items]
Assets, Fair Value Disclosure, Nonrecurring Basis	$ 44,400
Financial instruments, assets at carrying value	37,816	$ 184,889
Financial Liabilities Fair Value Disclosure	645,086	394,544
Level 1 [Member]
Debt Instrument [Line Items]
Financial instruments, assets at carrying value		3,469
Financial Liabilities Fair Value Disclosure	768
Level 2 [Member]
Debt Instrument [Line Items]
Financial instruments, assets at carrying value	37,816	181,420
Financial Liabilities Fair Value Disclosure	644,318	394,544
Marketable securities
Debt Instrument [Line Items]
Financial instruments, assets at carrying value		144,019
Marketable securities | Level 2 [Member]
Debt Instrument [Line Items]
Financial instruments, assets at carrying value		144,019
Commodity Contract [Member]
Debt Instrument [Line Items]
Financial instruments, assets at carrying value	33,619	37,097
Financial Liabilities Fair Value Disclosure	91,295	98,930
Commodity Contract [Member] | Level 2 [Member]
Debt Instrument [Line Items]
Financial instruments, assets at carrying value	33,619	37,097
Financial Liabilities Fair Value Disclosure	91,295	98,930
Forward Contracts [Member]
Debt Instrument [Line Items]
Financial instruments, assets at carrying value	4,197
Financial Liabilities Fair Value Disclosure	6,947
Forward Contracts [Member] | Level 2 [Member]
Debt Instrument [Line Items]
Financial instruments, assets at carrying value	4,197
Financial Liabilities Fair Value Disclosure	6,947
Nymex Futures Contracts [Member]
Debt Instrument [Line Items]
Financial instruments, assets at carrying value		3,469
Financial Liabilities Fair Value Disclosure	768
Nymex Futures Contracts [Member] | Level 1 [Member]
Debt Instrument [Line Items]
Financial instruments, assets at carrying value		3,469
Financial Liabilities Fair Value Disclosure	768
Nymex Futures Contracts [Member] | Level 2 [Member]
Debt Instrument [Line Items]
Financial instruments, assets at carrying value		0
Financial Liabilities Fair Value Disclosure	0
Interest Rate Swap [Member] | HEP [Member]
Debt Instrument [Line Items]
Financial instruments, assets at carrying value		304
Financial Liabilities Fair Value Disclosure	263	114
Interest Rate Swap [Member] | Level 2 [Member] | HEP [Member]
Debt Instrument [Line Items]
Financial instruments, assets at carrying value		304
Financial Liabilities Fair Value Disclosure	263	114
Senior Notes [Member]
Debt Instrument [Line Items]
Financial Liabilities Fair Value Disclosure	250,313
Senior Notes [Member] | HEP [Member]
Debt Instrument [Line Items]
Financial Liabilities Fair Value Disclosure	295,500	295,500
Senior Notes [Member] | Level 2 [Member]
Debt Instrument [Line Items]
Financial Liabilities Fair Value Disclosure	250,313
Senior Notes [Member] | Level 2 [Member] | HEP [Member]
Debt Instrument [Line Items]
Financial Liabilities Fair Value Disclosure	295,500	295,500
Reported Value Measurement [Member]
Debt Instrument [Line Items]
Financial instruments, assets at carrying value	37,816	184,889
Financial Liabilities Fair Value Disclosure	642,441	395,796
Reported Value Measurement [Member] | Marketable securities
Debt Instrument [Line Items]
Financial instruments, assets at carrying value		144,019
Reported Value Measurement [Member] | Commodity Contract [Member]
Debt Instrument [Line Items]
Financial instruments, assets at carrying value	33,619	37,097
Financial Liabilities Fair Value Disclosure	91,295	98,930
Reported Value Measurement [Member] | Forward Contracts [Member]
Debt Instrument [Line Items]
Financial instruments, assets at carrying value	4,197
Financial Liabilities Fair Value Disclosure	6,947
Reported Value Measurement [Member] | Nymex Futures Contracts [Member]
Debt Instrument [Line Items]
Financial instruments, assets at carrying value		3,469
Financial Liabilities Fair Value Disclosure	768
Reported Value Measurement [Member] | Interest Rate Swap [Member] | HEP [Member]
Debt Instrument [Line Items]
Financial instruments, assets at carrying value		304
Financial Liabilities Fair Value Disclosure	263	114
Reported Value Measurement [Member] | Senior Notes [Member]
Debt Instrument [Line Items]
Financial Liabilities Fair Value Disclosure	246,224
Reported Value Measurement [Member] | Senior Notes [Member] | HEP [Member]
Debt Instrument [Line Items]
Financial Liabilities Fair Value Disclosure	$ 296,944	$ 296,752

Fair Value Measurements Level 3

Fair Value Measurements Level 3 Roll Forward (Details) - Fair Value, Inputs, Level 3 [Member] $ in Thousands	3 Months Ended
	Mar. 31, 2015USD ($)
Fair Value Measurements, Recurring Basis, Level 3 Rollforward
Liability Balance at Beginning of Period	$ 0
Liability Balance at End of Period	(2,552)
Sales [Member]
Fair Value Measurements, Recurring Basis, Level 3 Rollforward
Change in fair value recognized in other comprehensive income	0
Changes Measurement [Member]
Fair Value Measurements, Recurring Basis, Level 3 Rollforward
Change in fair value recognized in other comprehensive income	$ (2,552)

Earnings Per Share (Schedule Of

Earnings Per Share (Schedule Of Earnings Per Share) (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands		3 Months Ended
		Mar. 31, 2016	Mar. 31, 2015
Earnings Per Share [Abstract]
Net income attributable to HollyFrontier stockholders		$ 21,253	$ 226,876
Participating Securities Share in Earnings		216	644
Net income attributable to common shares		$ 21,037	$ 226,232
Average number of shares of common stock outstanding		176,737	195,069
Effect of dilutive variable restricted shares and performance share units	[1]	47	52
Average number of shares of common stock outstanding assuming dilution		176,784	195,121
Basic earnings per share		$ 0.12	$ 1.16
Diluted earnings per share		$ 0.12	$ 1.16
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount		177	412
[1]	(1) Excludes anti-dilutive restricted and performance share units of: 177,000 412,000

Stock-Based Compensation (Narra

Stock-Based Compensation (Narrative) (Details) $ in Millions	3 Months Ended
	Mar. 31, 2016USD ($)Petroleum_Refineriesshares	Mar. 31, 2015USD ($)
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of Share-based Compensation Plans | Petroleum_Refineries	2
Share-based Compensation Expense	$ 3.2	$ 6.3
HEP [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based Compensation Expense	$ 0.7	$ 0.9
Restricted Stock [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period | shares	0
Total unrecognized compensation cost, weighted-average period of recognition, years	1 year 7 months
Total unrecognized compensation cost related to non-vested grants	$ 20.6
Restricted Stock [Member] | Minimum [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based Compensation Arrangement Vesting Period	1 year
Restricted Stock [Member] | Maximum [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based Compensation Arrangement Vesting Period	3 years
Performance Shares [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based Compensation Arrangement Vesting Period	3 years
Total unrecognized compensation cost, weighted-average period of recognition, years	1 year 11 months
Total unrecognized compensation cost related to non-vested grants	$ 11.8

Stock-Based Compensation (Summa

Stock-Based Compensation (Summary Of Restricted Stock Activity) (Details) - Restricted Stock [Member] $ / shares in Units, $ in Thousands	3 Months Ended
	Mar. 31, 2016USD ($)$ / sharesshares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Outstanding at January 1, 2016 (non-vested)	722,525
Granted	5,628
Vesting (transfer/conversion to common stock)	0
Forfeited	(9,168)
Outstanding at March 31, 2016 (non-vested)	718,985
Outstanding at January 1, 2016 (non-vested), Weighted Average Grant Date Fair Value | $ / shares	$ 48.35
Granted, Weighted Average Grant Date Fair Value | $ / shares	38.26
Forfeited, Weighted Average Grant Date Fair Value, per share | $ / shares	48.08
Outstanding at March 31, 2016 (non-vested), Weighted Average Grant Date Fair Value | $ / shares	$ 47.42
Aggregate Intrinsic Value | $	$ 25,395

Stock-Based Compensation (Sum43

Stock-Based Compensation (Summary Of Performance Share Unit Activity) (Details) - Performance Shares [Member] $ / shares in Units, $ in Millions	3 Months Ended
	Mar. 31, 2016USD ($)$ / sharesshares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based Compensation Expense	3 years
Current Estimated Percentage Of Share Units Awarded Ultimately Issued	75.00%
Outstanding at January 1, 2016 (non-vested)	637,938
Granted	2,861
Forfeited	(144,362)
Outstanding at March 31, 2016 (non-vested)	496,437
Total unrecognized compensation cost related to non-vested grants | $	$ 11.8
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period, Weighted Average Grant Date Fair Value | $ / shares	$ 46.16
Total unrecognized compensation cost, weighted-average period of recognition, years	1 year 11 months
Minimum [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Percentage Of Share Units Awarded Ultimately Issued	0.00%
Maximum [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Percentage Of Share Units Awarded Ultimately Issued	200.00%

Cash and Cash Equivalents and44

Cash and Cash Equivalents and Investments in Marketable Securities (Narrative) (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2016	Mar. 31, 2015
Schedule of Available-for-sale Securities [Line Items]
Investment Income, Interest	$ 75	$ 962
Maximum term to maturity from date of purchase (years)	1 year
Available-for-sale Securities [Member]
Schedule of Available-for-sale Securities [Line Items]
Investment Income, Interest		$ 500

Cash and Cash Equivalents and45

Cash and Cash Equivalents and Investments in Marketable Securities (Available-For-Sale Securities) (Details) $ in Thousands	Dec. 31, 2015USD ($)
Commercial Paper [Member]
Schedule of Trading Securities and Other Trading Assets [Line Items]
Available-for-Sale Securities, Amortized Cost	$ 22,876
Available-for-sale Debt Securities, Accumulated Gross Unrealized Gain, before Tax	1
Available-for-sale Debt Securities, Accumulated Gross Unrealized Loss, before Tax	(2)
Available-for-sale Securities, Fair Value (Net Carrying Amount)	22,875
Corporate Debt Securities [Member]
Schedule of Trading Securities and Other Trading Assets [Line Items]
Available-for-Sale Securities, Amortized Cost	32,311
Available-for-sale Debt Securities, Accumulated Gross Unrealized Gain, before Tax	0
Available-for-sale Debt Securities, Accumulated Gross Unrealized Loss, before Tax	(41)
Available-for-sale Securities, Fair Value (Net Carrying Amount)	32,270
US States and Political Subdivisions Debt Securities [Member]
Schedule of Trading Securities and Other Trading Assets [Line Items]
Available-for-Sale Securities, Amortized Cost	88,935
Available-for-sale Debt Securities, Accumulated Gross Unrealized Gain, before Tax	6
Available-for-sale Debt Securities, Accumulated Gross Unrealized Loss, before Tax	(67)
Available-for-sale Securities, Fair Value (Net Carrying Amount)	88,874
Total Marketable Securities [Member]
Schedule of Trading Securities and Other Trading Assets [Line Items]
Available-for-Sale Securities, Amortized Cost	144,122
Available-for-sale Debt Securities, Accumulated Gross Unrealized Gain, before Tax	7
Available-for-sale Debt Securities, Accumulated Gross Unrealized Loss, before Tax	(110)
Available-for-sale Securities, Fair Value (Net Carrying Amount)	$ 144,019

Inventories (Details)

Inventories (Details) - USD ($) $ in Thousands		3 Months Ended
		Mar. 31, 2016	Mar. 31, 2015	Dec. 31, 2015
Inventories
Crude Oil		$ 523,754		$ 518,922
Other raw materials and unfinished products	[1]	184,804		214,832
Finished products	[2]	622,578		603,568
Lower of cost or market reserve		(568,336)		(624,457)
Process chemicals	[3]	5,558		4,477
Repairs and maintenance supplies and other		123,580		124,527
Inventories, total		891,938		$ 841,869
Lower of cost or market inventory valuation adjustment		$ (56,121)	$ (6,546)
[1]	Other raw materials and unfinished products include feedstocks and blendstocks, other than crude.
[2]	Finished products include gasolines, jet fuels, diesels, lubricants, asphalts, LPG’s and residual fuels.
[3]	Process chemicals include additives and other chemicals.

Environmental (Details)

Environmental (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2016	Mar. 31, 2015	Dec. 31, 2015
Loss Contingencies [Line Items]
Environmental remediation costs	$ 0.9	$ 4.6
Accrued environmental liability	$ 97		$ 98.1
Estimated time frame to remediate contigency	30
Other Noncurrent Liabilities [Member]
Loss Contingencies [Line Items]
Accrued environmental liability	$ 82.5		$ 83.5

Debt (Narrative) (Details)

Debt (Narrative) (Details) - USD ($) $ in Thousands	3 Months Ended
	Jun. 30, 2016	Mar. 31, 2016	Mar. 31, 2015	Dec. 31, 2015
Debt Instrument [Line Items]
Maximum borrowing capacity under revolving credit agreement		$ 1,000,000
Proceeds from Bank Debt		315,000
Repayments of Debt		(315,000)
Letters of Credit Outstanding, Amount		3,300
Proceeds from Long-term Lines of Credit		$ 837,000	$ 153,500
Line of Credit Facility, Expiration Date		Jul. 1, 2019
Extinguishment of Debt, Amount		$ 39,500
Loss on early extinguishment of debt		$ (8,718)	0
Debt Instrument, Maturity Date		Apr. 1, 2026
Capitalized Interest Costs, Including Allowance for Funds Used During Construction		$ 700	2,900
Five Point Eight Seven Five Percentage Senior Notes Due Two Thousand Twenty-Six [Member] [Member]
Debt Instrument [Line Items]
Stated interest rate, senior notes		5.875%
Senior notes		$ 250,000
Plains [Member] | Lease [Member]
Debt Instrument [Line Items]
Proceeds from sale of storage assets		40,000
HEP [Member]
Debt Instrument [Line Items]
Maximum borrowing capacity under revolving credit agreement		1,200,000		$ 850,000
Proceeds from Long-term Lines of Credit		522,000
Repayments of Lines of Credit		$ (469,000)
Line of Credit Facility, Expiration Date		Nov. 1, 2018
Borrowings outstanding under revolving credit agreement		$ 765,000		712,000
Extinguishment of Debt, Amount		$ 39,500	$ 0
HEP [Member] | 6.5% Senior Notes Due 2020 [Member]
Debt Instrument [Line Items]
Stated interest rate, senior notes		6.50%
Senior notes		$ 300,000		$ 300,000
Debt Instrument, Maturity Date		Mar. 1, 2020
HEP [Member] | Letter of Credit [Member]
Debt Instrument [Line Items]
Maximum borrowing capacity under revolving credit agreement		$ 50,000
Subsequent Event [Member]
Debt Instrument [Line Items]
Proceeds from Loans	$ 350,000

Debt (Carrying Amounts Of Long-

Debt (Carrying Amounts Of Long-Term Debt) (Details) - USD ($) $ in Thousands	Mar. 31, 2016	Dec. 31, 2015
Debt Instrument [Line Items]
Financing obligation	$ 0	$ 31,288
Total long-term debt	1,308,168	1,040,040
Long-term Debt and Capital Lease Obligations	246,224	31,288
Long-term Debt	1,308,168	1,040,040
Five Point Eight Seven Five Percentage Senior Notes Due Two Thousand Twenty-Six [Member] [Member]
Debt Instrument [Line Items]
Principal	250,000
Unamortized discount	(3,776)
Total long-term debt	246,224
HEP [Member]
Debt Instrument [Line Items]
HEP Credit Agreement	765,000	712,000
Total long-term debt	1,061,944	1,008,752
Long-term Debt and Capital Lease Obligations	1,061,944	1,008,752
Long-term Debt	1,061,944	1,008,752
HEP [Member] | 6.5% Senior Notes Due 2020 [Member]
Debt Instrument [Line Items]
Principal	300,000	300,000
Unamortized discount	(3,056)	(3,248)
Total long-term debt	$ 296,944	$ 296,752

Derivative Instruments And He50

Derivative Instruments And Hedging Activities Derivatives and Hedging Instruments Gains Losses due to Settlements Hedge Ineffectiveness (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2016	Mar. 31, 2015
Trading Activity, Gains and Losses, Net [Line Items]
Change in fair value, effective portion	$ (11,921)	$ (14,148)
Gain reclassified to earnings due to settlements	11,056	(4,692)
Amortization of discontinued hedges reclassified to earnings	270	270
Unrealized Gain (Loss) on Cash Flow Hedging Instruments	(595)	(18,570)
Gain (Loss) Recognized in Earnings due to Settlements	(11,326)	4,422
Gain (Loss) Attributable to Hedge Ineffectiveness Recognized in Earnings		1,658
Sales [Member]
Trading Activity, Gains and Losses, Net [Line Items]
Gain (Loss) Attributable to Hedge Ineffectiveness Recognized in Earnings		(133)
Cost of Sales [Member]
Trading Activity, Gains and Losses, Net [Line Items]
Gain (Loss) Attributable to Hedge Ineffectiveness Recognized in Earnings		1,244
Operating Expense [Member]
Trading Activity, Gains and Losses, Net [Line Items]
Gain (Loss) Attributable to Hedge Ineffectiveness Recognized in Earnings		547
Accumulated Net Gain (Loss) from Cash Flow Hedges Attributable to Parent [Member] | Commodity Contract [Member] | Reclassification out of Accumulated Other Comprehensive Income [Member] | Sales [Member]
Trading Activity, Gains and Losses, Net [Line Items]
Gain (Loss) Recognized in Earnings due to Settlements	(4,756)	49,180
Accumulated Net Gain (Loss) from Cash Flow Hedges Attributable to Parent [Member] | Commodity Contract [Member] | Reclassification out of Accumulated Other Comprehensive Income [Member] | Cost of Sales [Member]
Trading Activity, Gains and Losses, Net [Line Items]
Gain (Loss) Recognized in Earnings due to Settlements		(40,769)
Accumulated Net Gain (Loss) from Cash Flow Hedges Attributable to Parent [Member] | Commodity Contract [Member] | Reclassification out of Accumulated Other Comprehensive Income [Member] | Operating Expense [Member]
Trading Activity, Gains and Losses, Net [Line Items]
Gain (Loss) Recognized in Earnings due to Settlements	$ (6,570)	$ (3,989)

Derivative Instruments And He51

Derivative Instruments And Hedging Activities Volumes related to price risk purchase derivatives (Details) - Price Risk Derivative [Member]	3 Months Ended
	Mar. 31, 2016MMBTUbbl
Natural Gas - long [Member]
Price Risk Derivatives for Future Purchases Notional Contract Volumes [Line Items]
Derivative, Nonmonetary Notional Amount, Energy Measure	16,800,000
Natural Gas - long [Member] | Maturing in Next Twelve Months [Member]
Price Risk Derivatives for Future Purchases Notional Contract Volumes [Line Items]
Derivative, Nonmonetary Notional Amount, Energy Measure	7,200,000
Natural Gas - long [Member] | Maturing in Year Two [Member]
Price Risk Derivatives for Future Purchases Notional Contract Volumes [Line Items]
Derivative, Nonmonetary Notional Amount, Energy Measure	9,600,000
Other Contract [Member]
Price Risk Derivatives for Future Purchases Notional Contract Volumes [Line Items]
Price Risk Fair Value Hedge Derivative, at Fair Value, Net | bbl	975,000
Other Contract [Member] | Maturing in Next Twelve Months [Member]
Price Risk Derivatives for Future Purchases Notional Contract Volumes [Line Items]
Price Risk Fair Value Hedge Derivative, at Fair Value, Net | bbl	975,000

Derivative Instruments And He52

Derivative Instruments And Hedging Activities Schedule of Realized Gain (Loss) (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2016	Mar. 31, 2015
Derivative Instruments, Gain (Loss) [Line Items]
Derivative Instruments Not Designated as Hedging Instruments, Gain (Loss), Net	$ (2,995)	$ 21,985
Cost of Sales [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Derivative Instruments Not Designated as Hedging Instruments, Gain (Loss), Net	474	22,281
Operating Expense [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Derivative Instruments Not Designated as Hedging Instruments, Gain (Loss), Net	$ (3,469)	$ (296)

Derivative Instruments And He53

Derivative Instruments And Hedging Activities Notional Contracts by Derivative Type (Details)	3 Months Ended
	Mar. 31, 2016MMBTUbbl
Economic Hedges [Member] | Commodity Contract [Member]
Economic hedges by derivative type [Line Items]
Price Risk Fair Value Hedge Derivative, at Fair Value, Net | bbl	8,800,000
Economic Hedges [Member] | Commodity Contract [Member] | Maturing in Next Twelve Months [Member]
Economic hedges by derivative type [Line Items]
Price Risk Fair Value Hedge Derivative, at Fair Value, Net | bbl	8,800,000
Economic Hedges [Member] | Commodity Contract [Member] | Maturing in Year Two [Member]
Economic hedges by derivative type [Line Items]
Price Risk Fair Value Hedge Derivative, at Fair Value, Net | bbl	0
Economic Hedges [Member] | Natural Gas Liquids [Member]
Economic hedges by derivative type [Line Items]
Derivative, Nonmonetary Notional Amount, Energy Measure	18,039,000
Economic Hedges [Member] | Natural Gas Liquids [Member] | Maturing in Next Twelve Months [Member]
Economic hedges by derivative type [Line Items]
Derivative, Nonmonetary Notional Amount, Energy Measure	7,731,000
Economic Hedges [Member] | Natural Gas Liquids [Member] | Maturing in Year Two [Member]
Economic hedges by derivative type [Line Items]
Derivative, Nonmonetary Notional Amount, Energy Measure	10,308,000
Economic Hedges [Member] | Natural Gas - long [Member]
Economic hedges by derivative type [Line Items]
Derivative, Nonmonetary Notional Amount, Energy Measure	16,800,000
Economic Hedges [Member] | Natural Gas - long [Member] | Maturing in Next Twelve Months [Member]
Economic hedges by derivative type [Line Items]
Derivative, Nonmonetary Notional Amount, Energy Measure	7,200,000
Economic Hedges [Member] | Natural Gas - long [Member] | Maturing in Year Two [Member]
Economic hedges by derivative type [Line Items]
Derivative, Nonmonetary Notional Amount, Energy Measure	9,600,000
Economic Hedges [Member] | Natural Gas - Short [Member]
Economic hedges by derivative type [Line Items]
Derivative, Nonmonetary Notional Amount, Energy Measure	16,800,000
Economic Hedges [Member] | Natural Gas - Short [Member] | Maturing in Next Twelve Months [Member]
Economic hedges by derivative type [Line Items]
Derivative, Nonmonetary Notional Amount, Energy Measure	7,200,000
Economic Hedges [Member] | Natural Gas - Short [Member] | Maturing in Year Two [Member]
Economic hedges by derivative type [Line Items]
Derivative, Nonmonetary Notional Amount, Energy Measure	9,600,000
Economic Hedges [Member] | NYMEX WTI short [Member]
Economic hedges by derivative type [Line Items]
Price Risk Fair Value Hedge Derivative, at Fair Value, Net | bbl	910,000
Economic Hedges [Member] | NYMEX WTI short [Member] | Maturing in Next Twelve Months [Member]
Economic hedges by derivative type [Line Items]
Price Risk Fair Value Hedge Derivative, at Fair Value, Net | bbl	910,000
Economic Hedges [Member] | NYMEX WTI short [Member] | Maturing in Year Two [Member]
Economic hedges by derivative type [Line Items]
Price Risk Fair Value Hedge Derivative, at Fair Value, Net | bbl	0
Economic Hedges [Member] | Forward Contracts [Member]
Economic hedges by derivative type [Line Items]
Price Risk Fair Value Hedge Derivative, at Fair Value, Net | bbl	1,175,000
Economic Hedges [Member] | Forward Contracts [Member] | Maturing in Next Twelve Months [Member]
Economic hedges by derivative type [Line Items]
Price Risk Fair Value Hedge Derivative, at Fair Value, Net | bbl	1,175,000
Price Risk Derivative [Member] | Natural Gas - long [Member]
Economic hedges by derivative type [Line Items]
Derivative, Nonmonetary Notional Amount, Energy Measure	16,800,000
Price Risk Derivative [Member] | Natural Gas - long [Member] | Maturing in Next Twelve Months [Member]
Economic hedges by derivative type [Line Items]
Derivative, Nonmonetary Notional Amount, Energy Measure	7,200,000
Price Risk Derivative [Member] | Natural Gas - long [Member] | Maturing in Year Two [Member]
Economic hedges by derivative type [Line Items]
Derivative, Nonmonetary Notional Amount, Energy Measure	9,600,000

Derivative Instruments And He54

Derivative Instruments And Hedging Activities (Narrative) (Details) $ in Millions	3 Months Ended
	Mar. 31, 2016USD ($)
Derivative [Line Items]
Accumulated Other Comprehensive Income (Loss), Unrealized Gain (Loss) From Hedging Activites	$ 1.9
Net unrealized gain in accumulated other comprehensive income related to accounting hedges	41.7
Net unrealized gain to be transferred from accumulated other comprehensive income to statement of income	$ (26.4)
HEP [Member] | Interest Rate Contract [Member]
Derivative [Line Items]
Fixed interest rate	0.74%
Rate added to fixed base rate	2.25%
Effective interest rate on debt	2.99%
Credit agreement advance maturing in 2017	$ 150

Derivative Instruments And He55

Derivative Instruments And Hedging Activities Interest Rate Swaps (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2016	Mar. 31, 2015
Derivative [Line Items]
Change in fair value, effective portion	$ (11,921)	$ (14,148)
Loss reclassified to earnings due to settlements	11,056	(4,692)
Gain (Loss) Recognized in Earnings due to Settlements	(11,326)	4,422
HEP [Member]
Derivative [Line Items]
Change in fair value, effective portion	(683)	(1,280)
Loss reclassified to earnings due to settlements	230	531
Gain (Loss) Recognized in Earnings due to Settlements	(453)	(749)
Interest Expense [Member] | HEP [Member]
Derivative [Line Items]
Gain (Loss) Recognized in Earnings due to Settlements	$ (230)	$ (531)

Derivative Instruments And He56

Derivative Instruments And Hedging Activities (Summary Of Balance Sheet Locations And Related Fair Values Of Outstanding Derivative Instruments) (Details) - USD ($) $ in Thousands	Mar. 31, 2016	Dec. 31, 2015
Derivative [Line Items]
Derivative Instruments in Hedges, Assets, at Fair Value	$ 4,197	$ 3,773
Derivative, Net Liability Position, Aggregate Fair Value	65,654	61,947
Accrued Liabilities [Member]
Derivative [Line Items]
Derivative, Net Liability Position, Aggregate Fair Value	45,911	36,976
Other Intangible Assets [Member]
Derivative [Line Items]
Derivative Instruments in Hedges, Assets, at Fair Value		304
Prepayments And Other [Member]
Derivative [Line Items]
Derivative Instruments in Hedges, Assets, at Fair Value	4,197	3,469
Other Noncurrent Liabilities [Member]
Derivative [Line Items]
Derivative, Net Liability Position, Aggregate Fair Value	19,743	24,971
Forward Contracts [Member]
Derivative [Line Items]
Derivative Asset, Fair Value, Gross Asset	0
Derivative designated as cash flow hedging instrument asset - gross liability	0
Derivative Instruments in Hedges, Assets, at Fair Value	0
Designated as Hedging Instrument [Member]
Derivative [Line Items]
Derivative Asset, Fair Value, Gross Asset	0	304
Derivative designated as cash flow hedging instrument asset - gross liability	0	0
Derivative Instruments in Hedges, Assets, at Fair Value	0	304
Derivative Designated as Cash Flow Hedging Instrument Liability - Gross Liability	38,660	38,869
Derivative Designated as Cash Flow Hedging Instrument Liability - Gross Asset	0	0
Derivative, Net Liability Position, Aggregate Fair Value	38,660	38,869
Designated as Hedging Instrument [Member] | Commodity Contract [Member]
Derivative [Line Items]
Derivative Asset, Fair Value, Gross Asset	0	0
Derivative designated as cash flow hedging instrument asset - gross liability	0	0
Derivative Instruments in Hedges, Assets, at Fair Value	0	0
Derivative Designated as Cash Flow Hedging Instrument Liability - Gross Liability	35,810	38,755
Derivative Designated as Cash Flow Hedging Instrument Liability - Gross Asset	0	0
Derivative, Net Liability Position, Aggregate Fair Value	35,810	38,755
Designated as Hedging Instrument [Member] | Forward Contracts [Member]
Derivative [Line Items]
Derivative Designated as Cash Flow Hedging Instrument Liability - Gross Liability	2,587
Derivative Designated as Cash Flow Hedging Instrument Liability - Gross Asset	0
Derivative, Net Liability Position, Aggregate Fair Value	2,587
Designated as Hedging Instrument [Member] | HEP Interest Rate Swap [Member]
Derivative [Line Items]
Derivative Asset, Fair Value, Gross Asset	0	304
Derivative designated as cash flow hedging instrument asset - gross liability	0	0
Derivative Instruments in Hedges, Assets, at Fair Value	0	304
Derivative Designated as Cash Flow Hedging Instrument Liability - Gross Liability	263	114
Derivative Designated as Cash Flow Hedging Instrument Liability - Gross Asset	0	0
Derivative, Net Liability Position, Aggregate Fair Value	263	114
Not Designated as Hedging Instrument [Member]
Derivative [Line Items]
Derivative Asset, Fair Value, Gross Asset	4,197	3,469
Derivative designated as cash flow hedging instrument asset - gross liability	0	0
Derivative Instruments in Hedges, Assets, at Fair Value	4,197	3,469
Derivative Designated as Cash Flow Hedging Instrument Liability - Gross Liability	60,633	60,196
Derivative Designated as Cash Flow Hedging Instrument Liability - Gross Asset	(33,639)	(37,118)
Derivative, Net Liability Position, Aggregate Fair Value	26,994	23,078
Not Designated as Hedging Instrument [Member] | Commodity Contract [Member]
Derivative [Line Items]
Derivative Asset, Fair Value, Gross Asset	0	0
Derivative designated as cash flow hedging instrument asset - gross liability	0	0
Derivative Instruments in Hedges, Assets, at Fair Value	0	0
Derivative Designated as Cash Flow Hedging Instrument Liability - Gross Liability	55,505	60,196
Derivative Designated as Cash Flow Hedging Instrument Liability - Gross Asset	(33,639)	(37,118)
Derivative, Net Liability Position, Aggregate Fair Value	21,866	23,078
Not Designated as Hedging Instrument [Member] | Forward Contracts [Member]
Derivative [Line Items]
Derivative Asset, Fair Value, Gross Asset	4,197
Derivative Instruments in Hedges, Assets, at Fair Value	4,197
Derivative Designated as Cash Flow Hedging Instrument Liability - Gross Liability	4,360
Derivative, Net Liability Position, Aggregate Fair Value	4,360
Not Designated as Hedging Instrument [Member] | Nymex Futures Contracts [Member]
Derivative [Line Items]
Derivative Asset, Fair Value, Gross Asset	0	3,469
Derivative Instruments in Hedges, Assets, at Fair Value	0	3,469
Derivative Instrument Not Designated as Hedging Instrument - Gross Liability		0
Derivative Designated as Cash Flow Hedging Instrument Liability - Gross Liability	768
Derivative, Net Liability Position, Aggregate Fair Value	$ 768	$ 0

Equity (Changes To Equity) (Det

Equity (Changes To Equity) (Details) - USD ($) $ in Thousands, shares in Billions	3 Months Ended
	Mar. 31, 2016	Mar. 31, 2015
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Balance at December 31, 2015	$ 5,253,415
Net income	43,390	$ 242,661
Other comprehensive income (loss), net of tax	(686)	(11,976)
Purchase of treasury stock	(133,430)	$ (55,065)
Balance at March 31, 2016	$ 5,086,824
Stock Repurchase Program, Number of Shares Authorized to be Repurchased	1
Stock Repurchase Program, Remaining Authorized Repurchase Amount	$ 178,800
Holly Corporation Stockholders' Equity [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Balance at December 31, 2015	5,253,415
Net income	21,253
Dividends	(58,402)
Distributions to noncontrolling interest	0
Other comprehensive income (loss), net of tax	(411)
Equity-based compensation	2,575
Tax attributable to equity-based compensation	(2,225)
Purchase of treasury stock	(129,381)
Purchase of units for incentive grants - HEP	0
Other	0
Balance at March 31, 2016	5,086,824
Noncontrolling Interest [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Balance at December 31, 2015	556,358
Net income	22,137
Dividends	0
Other comprehensive income (loss), net of tax	(275)
Equity-based compensation	651
Tax attributable to equity-based compensation	0
Purchase of treasury stock	0
Purchase of units for incentive grants - HEP	(784)
Other	18
Balance at March 31, 2016	556,374
Stockholders' Equity, Total [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Balance at December 31, 2015	5,809,773
Net income	43,390
Dividends	(58,402)
Distributions to noncontrolling interest	(21,731)
Other comprehensive income (loss), net of tax	(686)
Equity-based compensation	3,226
Tax attributable to equity-based compensation	(2,225)
Purchase of treasury stock	(129,381)
Purchase of units for incentive grants - HEP	(784)
Other	18
Balance at March 31, 2016	$ 5,643,198

Other Comprehensive Income (L58

Other Comprehensive Income (Loss) (Components And Allocated Tax Effects Of Other Comprehensive Income (Loss)) (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2016	Mar. 31, 2015
Other Comprehensive Income (Loss) Components and Tax Effects [Line Items]
Net Unrealized Gain (Loss) on Marketable Securities before Taxes	$ 101	$ 68
Net unrealized gain (loss) on hedging instruments	(1,048)	(19,319)
Other comprehensive income (loss)	(947)	(19,251)
Less other comprehensive income attributable to noncontrolling interest	(275)	(454)
Other Comprehensive Income (Loss), before Tax, Portion Attributable to Stockholders	(672)	(18,797)
Net Unrealized Gain (loss) on Marketable Securities, Tax	40	27
Net unrealized gain (loss) on hedging instruments, tax expense (benefit)	(301)	(7,302)
Other comprehensive income, tax expense	(261)	(7,275)
Other Comprehensive Income (Loss), Tax, Portion Attributable to Stockholders	(261)	(7,275)
Net unrealized gain (loss) on marketable securities, after tax	61	41
Net unrealized gain (loss) on hedging instruments, after tax	(747)	(12,017)
Other comprehensive income (loss), net of tax	(686)	(11,976)
Less other comprehensive income attributable to noncontrolling interest, after tax	(275)	(454)
Other Comprehensive Income (Loss) Portion Attributable to Stockholders	$ (411)	$ (11,522)

Other Comprehensive Income (L59

Other Comprehensive Income (Loss) (Accumulated Other Comprehensive Loss In Equity) (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2016	Mar. 31, 2015
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Income Tax Expense (Benefit)	$ 22,308	$ 129,728
Net income	43,390	242,661
Gain (Loss) on Derivative Instruments, Net, Pretax	(11,326)	4,422
Net Income (Loss) Attributable to Noncontrolling Interest	22,137	15,785
Net of Tax and Noncontrolling Interest	21,253	226,876
General and Administrative Expense	25,621	29,569
Other comprehensive income (loss), net of tax	(686)	(11,976)
Reclassification out of Accumulated Other Comprehensive Income [Member]
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Other comprehensive income (loss), net of tax	(7,013)	2,608
Reclassification out of Accumulated Other Comprehensive Income [Member] | Accumulated Net Investment Gain (Loss) Attributable to Parent [Member]
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Interest Income, Other	(23)	(2)
Marketable Securities, Realized Gain (Loss)	0	42
Available-for-sale Securities, Gross Realized Gain (Loss)	(23)	40
Income Tax Expense (Benefit)	(9)	15
Net income	(14)	25
Reclassification out of Accumulated Other Comprehensive Income [Member] | Accumulated Net Gain (Loss) from Cash Flow Hedges Attributable to Parent [Member]
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Income Tax Expense (Benefit)	(4,418)	1,630
Income (Loss) from Continuing Operations before Income Taxes, Domestic	(11,556)	3,891
Income (Loss) from Continuing Operations, Including Portion Attributable to Noncontrolling Interest	(7,138)	2,261
Net Income (Loss) Attributable to Noncontrolling Interest	139	322
Net of Tax and Noncontrolling Interest	(6,999)	2,583
Sales [Member] | Reclassification out of Accumulated Other Comprehensive Income [Member] | Accumulated Net Gain (Loss) from Cash Flow Hedges Attributable to Parent [Member] | Commodity Contract [Member]
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Gain (Loss) on Derivative Instruments, Net, Pretax	(4,756)	49,180
Cost of Sales [Member] | Reclassification out of Accumulated Other Comprehensive Income [Member] | Accumulated Net Gain (Loss) from Cash Flow Hedges Attributable to Parent [Member] | Commodity Contract [Member]
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Gain (Loss) on Derivative Instruments, Net, Pretax		(40,769)
Operating Expense [Member] | Reclassification out of Accumulated Other Comprehensive Income [Member] | Accumulated Net Gain (Loss) from Cash Flow Hedges Attributable to Parent [Member] | Commodity Contract [Member]
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Gain (Loss) on Derivative Instruments, Net, Pretax	(6,570)	(3,989)
HEP [Member]
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Gain (Loss) on Derivative Instruments, Net, Pretax	(453)	(749)
HEP [Member] | Interest Expense [Member]
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Gain (Loss) on Derivative Instruments, Net, Pretax	(230)	(531)
HEP [Member] | Interest Expense [Member] | Reclassification out of Accumulated Other Comprehensive Income [Member] | Interest Rate Swap [Member]
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Gain (Loss) on Derivative Instruments, Net, Pretax	$ (230)	$ (531)

Other Comprehensive Income (L60

Other Comprehensive Income (Loss) Other Comprehensive Income Balance Components (Details) - USD ($) $ in Thousands	Mar. 31, 2016	Dec. 31, 2015
Class of Stock [Line Items]
Unrealized gain on post-retirement benefit obligations	$ 20,737	$ 20,737
Unrealized gain (loss) on marketable securities	0	(61)
Unrealized gain (loss) on hedging activities, net of noncontrolling interest	(25,303)	(24,831)
Accumulated other comprehensive income	$ (4,566)	$ (4,155)

Post-retirement Plan (Net Perio

Post-retirement Plan (Net Periodic Pension Expense) (Details) - Other Postretirement Benefit Plan [Member] - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2016	Mar. 31, 2015
Defined Benefit Plan Disclosure [Line Items]
Service cost - benefit earned during the period	$ 324	$ 424
Interest cost on projected benefit obligations	197	205
Defined Benefit Plan, Amortization of Prior Service Cost (Credit)	(871)	(871)
Defined Benefit Plan, Amortization of Gains (Losses)	0	46
Net periodic post-retirement expense (credit)	$ (350)	$ (196)

Segment Information (Narrative)

Segment Information (Narrative) (Details) $ in Millions	3 Months Ended
	Mar. 31, 2016USD ($)	Mar. 31, 2015USD ($)
Segment Reporting Information [Line Items]
Reportable segments	2
HEP [Member]
Segment Reporting Information [Line Items]
Revenues from external customers	$ 19.2	$ 17.5
SLC Pipeline [Member]
Segment Reporting Information [Line Items]
Equity Method Investment, Ownership Percentage	25.00%
UNEV Pipeline [Member]
Segment Reporting Information [Line Items]
Equity Method Investment, Ownership Percentage	75.00%
Frontier Pipeline [Member]
Segment Reporting Information [Line Items]
Equity Method Investment, Ownership Percentage	50.00%

Segment Information (Schedule O

Segment Information (Schedule Of Segment Reporting Information) (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2016	Mar. 31, 2015	Dec. 31, 2015
Segment Reporting Information [Line Items]
Sales and other revenues	$ 2,018,724	$ 3,006,626
Depreciation and amortization	87,880	80,012
Income (loss) from operations	83,598	388,622
Capital expenditures	149,573	172,619
Cash, Cash Equivalents, and Short-term Investments	111,021		$ 210,552
Total assets	8,594,287		8,388,299
Long-term Debt	1,308,168		1,040,040
2911 Petroleum Refining [Member]
Segment Reporting Information [Line Items]
Sales and other revenues	1,999,587	2,989,280
Depreciation and amortization	68,878	63,275
Income (loss) from operations	55,000	373,901
Capital expenditures	129,018	116,467
Cash, Cash Equivalents, and Short-term Investments	13,726		91
Total assets	7,053,257		6,831,235
Long-term Debt	0		0
Corporate And Other [Member]
Segment Reporting Information [Line Items]
Sales and other revenues	110	218
Depreciation and amortization	3,180	2,654
Income (loss) from operations	(26,855)	(28,949)
Capital expenditures	2,682	4,425
Cash, Cash Equivalents, and Short-term Investments	88,261		195,448
Total assets	225,375		289,225
Long-term Debt	246,224		31,288
Consolidation, Eliminations [Member]
Segment Reporting Information [Line Items]
Sales and other revenues	(82,983)	(72,628)
Depreciation and amortization	(207)	(207)
Income (loss) from operations	(614)	(540)
Capital expenditures	0	0
Cash, Cash Equivalents, and Short-term Investments	0		0
Total assets	(291,945)		(310,560)
Long-term Debt	0		0
HEP [Member]
Segment Reporting Information [Line Items]
Sales and other revenues	102,010	89,756
Depreciation and amortization	16,029	14,290
Income (loss) from operations	56,067	44,210
Capital expenditures	17,873	$ 51,727
Cash, Cash Equivalents, and Short-term Investments	9,034		15,013
Total assets	1,607,600		1,578,399
Long-term Debt	$ 1,061,944		$ 1,008,752

Additional Financial Informat64

Additional Financial Information (Narrative) (Details)	3 Months Ended
	Mar. 31, 2016
HEP [Member]
Additional Financial Information [Line Items]
Percentage of ownership in variable interest entity	39.00%

Additional Financial Informat65

Additional Financial Information Consolidating Balance Sheet (Details) - USD ($) $ in Thousands	Mar. 31, 2016	Dec. 31, 2015	Mar. 31, 2015	Dec. 31, 2014
Condensed Financial Statements, Captions [Line Items]
Cash and cash equivalents	$ 111,021	$ 66,533	$ 594,092	$ 567,985
Marketable securities	0	144,019
Accounts receivable, net	430,914	351,978
Inventories	891,938	841,869
Income taxes receivable	32,813	0
Prepayments and other	32,584	43,666
Total current assets	1,499,270	1,448,065
Properties, plants and equipment, net	4,196,257	4,115,662
Intangibles and other assets	2,898,760	2,824,572
Total assets	8,594,287	8,388,299
Accounts payable	731,271	716,490
Income tax payable		8,142
Accrued liabilities	154,337	135,983
Total current liabilities	885,608	860,615
Long-term debt	1,308,168	1,040,040
Liability to HEP	0	0
Deferred income tax liabilities	544,308	497,906
Other long-term liabilities	213,005	179,965
Investment in HEP	0	0
Equity – HollyFrontier	5,086,824	5,253,415
Equity – noncontrolling interest	556,374	556,358
Total liabilities and equity	8,594,287	8,388,299
Holly Frontier Corp. Before Consolidation of HEP [Member]
Condensed Financial Statements, Captions [Line Items]
Cash and cash equivalents	101,987	51,520	588,290	565,155
Marketable securities		144,019
Accounts receivable, net	429,153	355,020
Inventories	889,816	839,897
Income taxes receivable	32,813
Prepayments and other	31,176	48,288
Total current assets	1,484,945	1,438,744
Properties, plants and equipment, net	3,345,759	3,261,494
Intangibles and other assets	2,438,585	2,410,879
Total assets	7,269,289	7,111,117
Accounts payable	752,085	738,024
Income tax payable		8,142
Accrued liabilities	139,914	117,346
Total current liabilities	891,999	863,512
Long-term debt	246,224	31,288
Liability to HEP	217,987	220,998
Deferred income tax liabilities	543,850	497,475
Other long-term liabilities	158,479	125,614
Investment in HEP	125,673	120,721
Equity – HollyFrontier	5,085,077	5,251,509
Equity – noncontrolling interest	0	0
Total liabilities and equity	7,269,289	7,111,117
Non-Guarantor Non-Restricted Subsidiaries (HEP Segment) [Member]
Condensed Financial Statements, Captions [Line Items]
Cash and cash equivalents	9,034	15,013	5,802	2,830
Marketable securities		0
Accounts receivable, net	41,055	41,075
Inventories	2,122	1,972
Income taxes receivable	0
Prepayments and other	3,059	3,082
Total current assets	55,270	61,142
Properties, plants and equipment, net	1,092,443	1,099,683
Intangibles and other assets	459,887	417,574
Total assets	1,607,600	1,578,399
Accounts payable	18,480	22,583
Income tax payable		0
Accrued liabilities	16,074	26,341
Total current liabilities	34,554	48,924
Long-term debt	1,061,944	1,008,752
Liability to HEP	0	0
Deferred income tax liabilities	458	431
Other long-term liabilities	55,381	59,376
Investment in HEP	0	0
Equity – HollyFrontier	359,023	366,487
Equity – noncontrolling interest	96,240	94,429
Total liabilities and equity	1,607,600	1,578,399
Eliminations [Member]
Condensed Financial Statements, Captions [Line Items]
Cash and cash equivalents	0	0	$ 0	$ 0
Marketable securities		0
Accounts receivable, net	(39,294)	(44,117)
Inventories	0	0
Income taxes receivable	0
Prepayments and other	(1,651)	(7,704)
Total current assets	(40,945)	(51,821)
Properties, plants and equipment, net	(241,945)	(245,515)
Intangibles and other assets	288	(3,881)
Total assets	(282,602)	(301,217)
Accounts payable	(39,294)	(44,117)
Income tax payable		0
Accrued liabilities	(1,651)	(7,704)
Total current liabilities	(40,945)	(51,821)
Long-term debt	0	0
Liability to HEP	(217,987)	(220,998)
Deferred income tax liabilities	0	0
Other long-term liabilities	(855)	(5,025)
Investment in HEP	(125,673)	(120,721)
Equity – HollyFrontier	(357,276)	(364,581)
Equity – noncontrolling interest	460,134	461,929
Total liabilities and equity	$ (282,602)	$ (301,217)

Additional Financial Informat66

Additional Financial Information Consolidating Statement of Income (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2016	Mar. 31, 2015
Condensed Financial Statements, Captions [Line Items]
Sales and other revenues	$ 2,018,724	$ 3,006,626
Cost of products sold	1,625,163	2,251,373
Lower of cost or market inventory valuation adjustment	(56,121)	(6,546)
Operating Costs	252,583	263,596
General and administrative	25,621	29,569
Depreciation and amortization	87,880	80,012
Total operating costs and expenses	1,935,126	2,618,004
Income (loss) from operations	83,598	388,622
Earnings (loss) of equity method investments	2,765	(7,807)
Interest income (expense)	(12,012)	(9,192)
Loss on early extinguishment of debt	(8,718)	0
Gain (loss) on sale of assets	65	766
Nonoperating Income (Expense)	(17,900)	(16,233)
Income before income taxes	65,698	372,389
Income tax provision	22,308	129,728
Net income	43,390	242,661
Net Income (Loss) Attributable to Noncontrolling Interest	22,137	15,785
Net income attributable to HollyFrontier stockholders	21,253	226,876
Comprehensive income attributable to HollyFrontier stockholders	20,842	215,354
Holly Frontier Corp. Before Consolidation of HEP [Member]
Condensed Financial Statements, Captions [Line Items]
Sales and other revenues	1,999,697	2,989,498
Cost of products sold	1,703,068	2,322,881
Lower of cost or market inventory valuation adjustment	(56,121)	(6,546)
Operating Costs	230,017	236,003
General and administrative	22,530	26,279
Depreciation and amortization	75,421	69,258
Total operating costs and expenses	1,974,915	2,647,875
Income (loss) from operations	24,782	341,623
Earnings (loss) of equity method investments	25,797	11,901
Interest income (expense)	708	1,922
Loss on early extinguishment of debt	8,718
Gain (loss) on sale of assets	73	608
Nonoperating Income (Expense)	17,860	14,431
Income before income taxes	42,642	356,054
Income tax provision	22,212	129,627
Net income	20,430	226,427
Net Income (Loss) Attributable to Noncontrolling Interest	(7)	(7)
Net income attributable to HollyFrontier stockholders	20,437	226,434
Comprehensive income attributable to HollyFrontier stockholders	20,026	214,912
Non-Guarantor Non-Restricted Subsidiaries (HEP Segment) [Member]
Condensed Financial Statements, Captions [Line Items]
Sales and other revenues	102,010	89,756
Cost of products sold	0	0
Lower of cost or market inventory valuation adjustment	0	0
Operating Costs	26,823	27,966
General and administrative	3,091	3,290
Depreciation and amortization	16,029	14,290
Total operating costs and expenses	45,943	45,546
Income (loss) from operations	56,067	44,210
Earnings (loss) of equity method investments	2,765	734
Interest income (expense)	(10,423)	(8,767)
Loss on early extinguishment of debt	0
Gain (loss) on sale of assets	(8)	158
Nonoperating Income (Expense)	(7,666)	(7,875)
Income before income taxes	48,401	36,335
Income tax provision	96	101
Net income	48,305	36,234
Net Income (Loss) Attributable to Noncontrolling Interest	4,927	4,027
Net income attributable to HollyFrontier stockholders	43,378	32,207
Comprehensive income attributable to HollyFrontier stockholders	43,200	31,912
Consolidation, Eliminations [Member]
Condensed Financial Statements, Captions [Line Items]
Sales and other revenues	(82,983)	(72,628)
Cost of products sold	(77,905)	(71,508)
Lower of cost or market inventory valuation adjustment	0	0
Operating Costs	(4,257)	(373)
General and administrative	0	0
Depreciation and amortization	(3,570)	(3,536)
Total operating costs and expenses	(85,732)	(75,417)
Income (loss) from operations	2,749	2,789
Earnings (loss) of equity method investments	(25,797)	(20,442)
Interest income (expense)	(2,297)	(2,347)
Loss on early extinguishment of debt	0
Gain (loss) on sale of assets	0	0
Nonoperating Income (Expense)	(28,094)	(22,789)
Income before income taxes	(25,345)	(20,000)
Income tax provision	0	0
Net income	(25,345)	(20,000)
Net Income (Loss) Attributable to Noncontrolling Interest	17,217	11,765
Net income attributable to HollyFrontier stockholders	(42,562)	(31,765)
Comprehensive income attributable to HollyFrontier stockholders	$ (42,384)	$ (31,470)

Additional Financial Informat67

Additional Financial Information Consolidating Statement of Cash Flows (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2016	Mar. 31, 2015
Condensed Financial Statements, Captions [Line Items]
Cash flows from operating activities	$ 6,636	$ 246,892
Additions to properties, plants and equipment	(131,700)	(120,892)
Proceeds from sale of assets	258	814
Purchases of marketable securities	(4,082)	(118,816)
Sales and maturities of marketable securities	148,204	178,524
Net cash provided by (used for) investing activities	(5,193)	(112,097)
Net borrowings under credit agreement – HEP	53,000	23,000
Inventory repurchase obligation	(693)	(7,434)
Net proceeds from Issuance of senior notes	246,690	0
Purchase of treasury stock	(133,430)	(55,065)
Dividends	(58,602)	(62,335)
Payments to Noncontrolling Interests	(21,731)	(20,472)
Repayment of financing obligation	(39,500)
Proceeds from (Payments by) Partnership Contribution	0	0
Other, net	(4,075)	(1,250)
Net cash provided by (used for) financing activities	43,045	(108,688)
Increase (decrease) for the period	44,488	26,107
Beginning of period	66,533	567,985
End of period	111,021	594,092
Holly Frontier Corp. Before Consolidation of HEP [Member]
Condensed Financial Statements, Captions [Line Items]
Cash flows from operating activities	(8,257)	207,509
Additions to properties, plants and equipment	(131,700)	(120,892)
Proceeds from sale of assets	258	814
Purchases of marketable securities	(4,082)	(118,816)
Sales and maturities of marketable securities	148,204	178,524
Net cash provided by (used for) investing activities	12,680	(60,370)
Net borrowings under credit agreement – HEP	0
Inventory repurchase obligation	(693)	(7,434)
Net proceeds from Issuance of senior notes	246,690
Purchase of treasury stock	(133,430)	(55,065)
Dividends	(58,602)	(62,335)
Payments to Noncontrolling Interests	0	0
Repayment of financing obligation	0
Proceeds from (Payments by) Partnership Contribution	(9,122)	(13,035)
Other, net	(185)	(1,003)
Net cash provided by (used for) financing activities	46,044	(124,004)
Increase (decrease) for the period	50,467	23,135
Beginning of period	51,520	565,155
End of period	101,987	588,290
Non-Guarantor Non-Restricted Subsidiaries (HEP Segment) [Member]
Condensed Financial Statements, Captions [Line Items]
Cash flows from operating activities	39,372	61,026
Additions to properties, plants and equipment	0	0
Proceeds from sale of assets	0	0
Purchases of marketable securities	0	0
Sales and maturities of marketable securities	0	0
Net cash provided by (used for) investing activities	(17,873)	(51,727)
Net borrowings under credit agreement – HEP	53,000	23,000
Inventory repurchase obligation	0	0
Net proceeds from Issuance of senior notes	0
Purchase of treasury stock	0	0
Dividends	0	0
Payments to Noncontrolling Interests	(46,210)	(42,115)
Repayment of financing obligation	(39,500)
Proceeds from (Payments by) Partnership Contribution	9,122	13,035
Other, net	(3,890)	(247)
Net cash provided by (used for) financing activities	(27,478)	(6,327)
Increase (decrease) for the period	(5,979)	2,972
Beginning of period	15,013	2,830
End of period	9,034	5,802
Eliminations [Member]
Condensed Financial Statements, Captions [Line Items]
Cash flows from operating activities	(24,479)	(21,643)
Additions to properties, plants and equipment	0	0
Proceeds from sale of assets	0	0
Purchases of marketable securities	0	0
Sales and maturities of marketable securities	0	0
Net cash provided by (used for) investing activities	0	0
Inventory repurchase obligation	0	0
Net proceeds from Issuance of senior notes	0
Purchase of treasury stock	0	0
Dividends	0	0
Payments to Noncontrolling Interests	24,479	21,643
Repayment of financing obligation	0
Proceeds from (Payments by) Partnership Contribution	0	0
Other, net	0	0
Net cash provided by (used for) financing activities	24,479	21,643
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	(17,873)	(51,727)
Repayment of financing obligation	(39,500)	0
Beginning of period	15,013
End of period	9,034
HEP [Member] | Holly Frontier Corp. Before Consolidation of HEP [Member]
Condensed Financial Statements, Captions [Line Items]
Additions to properties, plants and equipment	0	0
Net borrowings under credit agreement – HEP		0
HEP [Member] | Non-Guarantor Non-Restricted Subsidiaries (HEP Segment) [Member]
Condensed Financial Statements, Captions [Line Items]
Additions to properties, plants and equipment	(17,873)	(51,727)
HEP [Member] | Eliminations [Member]
Condensed Financial Statements, Captions [Line Items]
Additions to properties, plants and equipment	0	0
Net borrowings under credit agreement – HEP	$ 0	$ 0