HF Sinclair 10-K 20 Feb 20 2019 FY Annual report Financial data

Document And Entity Information

Document And Entity Information - USD ($) $ / shares in Units, $ in Thousands	12 Months Ended
	Dec. 31, 2019	Feb. 14, 2020	Jun. 28, 2019	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Document Information [Line Items]
Cash and cash equivalents (HEP: $13,287 and $3,045, respectively)	$ 885,162			$ 1,154,752	$ 630,757	$ 710,579
Accounts receivable: Product and transportation (HEP: $18,732 and $12,332, respectively)	834,771			635,623
Materials, supplies and other (HEP: $833 and $858, respectively)	191,413			187,975
Prepayments and other (HEP: $6,795 and $3,452, respectively)	61,662			81,507
Properties, plants and equipment, at cost (HEP: $2,047,674 and $2,058,388, respectively)	7,237,297			6,780,980
Less accumulated depreciation (HEP: ($552,786) and ($489,217), respectively)	(2,414,585)			(2,098,446)
Operating lease right-of-use assets (HEP: $2,652)	467,109			0
Goodwill (HEP: $312,873 and $314,229, respectively)	2,373,907			2,246,435
Intangibles and other (HEP: $319,569 and $176,291, respectively)	673,646			429,392
Accounts payable (HEP: $18,050 and $16,723, respectively)	1,215,555			872,627
Operating lease liabilities (HEP $3,608)	104,415			0
Accrued liabilities (HEP: $30,418 and $27,240, respectively)	337,993			277,892
Long-term Debt and Lease Obligation (HEP: $1,462,031 and $1,418,900, respectively)	2,455,640			2,411,540
Noncurrent operating lease liabilities (HEP $72,000)	364,420			0
Deferred income taxes (HEP: $424 and $488, respectively)	889,270			722,576
Other long-term liabilities (HEP: $59,021 and $63,534, respectively)	$ 260,157			233,271
Document Type	10-K
Document Annual Report	true
Document Period End Date	Dec. 31, 2019
Document Transition Report	false
Entity File Number	1-3876
Entity Registrant Name	HOLLYFRONTIER CORP
Entity Incorporation, State or Country Code	DE
Entity Tax Identification Number	75-1056913
Entity Address, Address Line One	2828 N. Harwood, Suite 1300
Entity Address, City or Town	Dallas
Entity Address, State or Province	TX
Entity Address, Postal Zip Code	75201
City Area Code	214
Local Phone Number	871-3555
Title of 12(b) Security	Common Stock $0.01 par value
Trading Symbol	HFC
Security Exchange Name	NYSE
Entity Well-known Seasoned Issuer	Yes
Entity Voluntary Filers	No
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Filer Category	Large Accelerated Filer
Entity Small Business	false
Entity Emerging Growth Company	false
Entity Shell Company	false
Entity Listing, Par Value Per Share	$ 0.01
Entity Public Float			$ 7,100,000
Entity Common Stock, Shares Outstanding		161,869,492
Documents Incorporated by Reference	Portions of the registrant's proxy statement for its annual meeting of stockholders to be held on May 13, 2020 , which proxy statement will be filed with the Securities and Exchange Commission within 120 days after December 31, 2019 , are incorporated by reference in Part III.
Entity Central Index Key	0000048039
Current Fiscal Year End Date	--12-31
Document Fiscal Year Focus	2019
Document Fiscal Period Focus	FY
Amendment Flag	false
Variable Interest Entity
Document Information [Line Items]
Cash and cash equivalents (HEP: $13,287 and $3,045, respectively)	$ 13,287			3,045
Accounts receivable: Product and transportation (HEP: $18,732 and $12,332, respectively)	18,732			12,332
Materials, supplies and other (HEP: $833 and $858, respectively)	833			858
Prepayments and other (HEP: $6,795 and $3,452, respectively)	6,795			3,452
Properties, plants and equipment, at cost (HEP: $2,047,674 and $2,058,388, respectively)	2,047,674			2,058,388
Less accumulated depreciation (HEP: ($552,786) and ($489,217), respectively)	(552,786)			(489,217)
Operating lease right-of-use assets (HEP: $2,652)	2,652
Goodwill (HEP: $312,873 and $314,229, respectively)	312,873			314,229
Intangibles and other (HEP: $319,569 and $176,291, respectively)	319,569			176,291
Accounts payable (HEP: $18,050 and $16,723, respectively)	18,050			16,723
Operating lease liabilities (HEP $3,608)	3,608
Accrued liabilities (HEP: $30,418 and $27,240, respectively)	30,418			27,240
Long-term Debt and Lease Obligation (HEP: $1,462,031 and $1,418,900, respectively)	1,462,031			1,418,900
Noncurrent operating lease liabilities (HEP $72,000)	72,000
Deferred income taxes (HEP: $424 and $488, respectively)	424			488
Other long-term liabilities (HEP: $59,021 and $63,534, respectively)	$ 59,021			$ 63,534

Consolidated Balance Sheets

Consolidated Balance Sheets - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
Current assets:
Cash and cash equivalents (HEP: $13,287 and $3,045, respectively)	$ 885,162	$ 1,154,752
Accounts receivable: Product and transportation (HEP: $18,732 and $12,332, respectively)	834,771	635,623
Crude oil resales	44,914	36,078
Accounts receivable, total	879,685	671,701
Crude oil and refined products	1,282,789	1,166,404
Materials, supplies and other (HEP: $833 and $858, respectively)	191,413	187,975
Total inventory	1,474,202	1,354,379
Income taxes receivable	5,478	34,040
Prepayments and other (HEP: $6,795 and $3,452, respectively)	61,662	81,507
Total current assets	3,306,189	3,296,379
Properties, plants and equipment, at cost (HEP: $2,047,674 and $2,058,388, respectively)	7,237,297	6,780,980
Less accumulated depreciation (HEP: ($552,786) and ($489,217), respectively)	(2,414,585)	(2,098,446)
Property, plant and equipment, net	4,822,712	4,682,534
Operating lease right-of-use assets (HEP: $2,652)	467,109	0
Other assets: Turnaround costs	521,278	339,861
Goodwill (HEP: $312,873 and $314,229, respectively)	2,373,907	2,246,435
Intangibles and other (HEP: $319,569 and $176,291, respectively)	673,646	429,392
Other assets, total	3,568,831	3,015,688
Total assets	12,164,841	10,994,601
Current liabilities:
Accounts payable (HEP: $18,050 and $16,723, respectively)	1,215,555	872,627
Income taxes payable	27,965	17,636
Operating lease liabilities (HEP $3,608)	104,415	0
Accrued liabilities (HEP: $30,418 and $27,240, respectively)	337,993	277,892
Total current liabilities	1,685,928	1,168,155
Long-term debt (HEP: $1,462,031 and $1,418,900, respectively)	2,455,640	2,411,540
Noncurrent operating lease liabilities (HEP $72,000)	364,420	0
Deferred income taxes (HEP: $424 and $488, respectively)	889,270	722,576
Other long-term liabilities (HEP: $59,021 and $63,534, respectively)	260,157	233,271
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; 256,042,554 and 256,036,788 shares issued as of December 31, 2019 and December 31, 2018	2,560	2,560
Additional capital	4,204,547	4,196,125
Retained earnings	4,744,120	4,196,902
Accumulated other comprehensive income (loss)	14,774	13,623
Common stock held in treasury, at cost – 94,196,029 and 83,915,297 shares as of December 31, 2019 and December 31, 2018, respectively	(2,987,808)	(2,490,639)
Total HollyFrontier stockholders’ equity	5,978,193	5,918,571
Noncontrolling interest	531,233	540,488
Total equity	6,509,426	6,459,059
Total liabilities and equity	12,164,841	10,994,601
HEP
Current assets:
Cash and cash equivalents (HEP: $13,287 and $3,045, respectively)	13,287	3,045
Accounts receivable: Product and transportation (HEP: $18,732 and $12,332, respectively)	18,732	12,332
Materials, supplies and other (HEP: $833 and $858, respectively)	833	858
Prepayments and other (HEP: $6,795 and $3,452, respectively)	6,795	3,452
Properties, plants and equipment, at cost (HEP: $2,047,674 and $2,058,388, respectively)	2,047,674	2,058,388
Less accumulated depreciation (HEP: ($552,786) and ($489,217), respectively)	(552,786)	(489,217)
Operating lease right-of-use assets (HEP: $2,652)	2,652
Goodwill (HEP: $312,873 and $314,229, respectively)	312,873	314,229
Intangibles and other (HEP: $319,569 and $176,291, respectively)	319,569	176,291
Current liabilities:
Accounts payable (HEP: $18,050 and $16,723, respectively)	18,050	16,723
Operating lease liabilities (HEP $3,608)	3,608
Accrued liabilities (HEP: $30,418 and $27,240, respectively)	30,418	27,240
Noncurrent operating lease liabilities (HEP $72,000)	72,000
Deferred income taxes (HEP: $424 and $488, respectively)	424	488
Other long-term liabilities (HEP: $59,021 and $63,534, respectively)	$ 59,021	$ 63,534

Consolidated Balance Sheets (Pa

Consolidated Balance Sheets (Parenthetical) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
Cash and cash equivalents (HEP: $13,287 and $3,045, respectively)	$ 885,162	$ 1,154,752
Accounts receivable: Product and transportation (HEP: $18,732 and $12,332, respectively)	834,771	635,623
Materials, supplies and other (HEP: $833 and $858, respectively)	191,413	187,975
Prepayments and other (HEP: $6,795 and $3,452, respectively)	61,662	81,507
Properties, plants and equipment, at cost (HEP: $2,047,674 and $2,058,388, respectively)	7,237,297	6,780,980
Less accumulated depreciation (HEP: ($552,786) and ($489,217), respectively)	(2,414,585)	(2,098,446)
Operating lease right-of-use assets (HEP: $2,652)	467,109	0
Goodwill (HEP: $312,873 and $314,229, respectively)	2,373,907	2,246,435
Intangibles and other (HEP: $319,569 and $176,291, respectively)	673,646	429,392
Accounts payable (HEP: $18,050 and $16,723, respectively)	1,215,555	872,627
Operating lease liabilities (HEP $3,608)	(104,415)	0
Accrued liabilities (HEP: $30,418 and $27,240, respectively)	337,993	277,892
Long-term Debt and Lease Obligation (HEP: $1,462,031 and $1,418,900, respectively)	2,455,640	2,411,540
Noncurrent operating lease liabilities (HEP $72,000)	364,420	0
Deferred income taxes (HEP: $424 and $488, respectively)	889,270	722,576
Other long-term liabilities (HEP: $59,021 and $63,534, respectively)	$ 260,157	$ 233,271
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	256,042,554	256,036,788
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	94,196,029	83,915,297
HEP
Cash and cash equivalents (HEP: $13,287 and $3,045, respectively)	$ 13,287	$ 3,045
Accounts receivable: Product and transportation (HEP: $18,732 and $12,332, respectively)	18,732	12,332
Materials, supplies and other (HEP: $833 and $858, respectively)	833	858
Prepayments and other (HEP: $6,795 and $3,452, respectively)	6,795	3,452
Properties, plants and equipment, at cost (HEP: $2,047,674 and $2,058,388, respectively)	2,047,674	2,058,388
Less accumulated depreciation (HEP: ($552,786) and ($489,217), respectively)	(552,786)	(489,217)
Operating lease right-of-use assets (HEP: $2,652)	2,652
Goodwill (HEP: $312,873 and $314,229, respectively)	312,873	314,229
Intangibles and other (HEP: $319,569 and $176,291, respectively)	319,569	176,291
Accounts payable (HEP: $18,050 and $16,723, respectively)	18,050	16,723
Operating lease liabilities (HEP $3,608)	(3,608)
Accrued liabilities (HEP: $30,418 and $27,240, respectively)	30,418	27,240
Long-term Debt and Lease Obligation (HEP: $1,462,031 and $1,418,900, respectively)	1,462,031	1,418,900
Noncurrent operating lease liabilities (HEP $72,000)	72,000
Deferred income taxes (HEP: $424 and $488, respectively)	424	488
Other long-term liabilities (HEP: $59,021 and $63,534, respectively)	$ 59,021	$ 63,534

Consolidated Statements Of Inco

Consolidated Statements Of Income - USD ($) shares in Thousands, $ in Thousands	12 Months Ended
	Dec. 31, 2019		Dec. 31, 2018		Dec. 31, 2017
Income Statement [Abstract]
Sales and other revenues	$ 17,486,578		$ 17,714,666		$ 14,251,299
Operating costs and expenses:
Cost of products sold (exclusive of lower of cost or market inventory valuation adjustment)	13,918,384		13,940,782		11,467,873
Lower of cost or market inventory valuation adjustment			136,305
Inventory Write Up	(119,775)				(108,685)
Cost of products sold (exclusive of depreciation and amortization)	13,798,609		14,077,087		11,359,188
Operating expenses (exclusive of depreciation and amortization)	1,394,052		1,285,838		1,296,669
Selling, general and administrative expenses (exclusive of depreciation and amortization)	354,236		290,424		265,721
Depreciation and amortization	509,925		437,324		409,937
Goodwill and long-lived asset impairment	152,712		0		19,247
Total operating costs and expenses	16,209,534		16,090,673		13,350,762
Income (loss) from operations	1,277,044	[1]	1,623,993	[2],[3]	900,537
Other income (expense):
Earnings of equity method investments	5,180		5,825		12,510
Interest income	22,139		16,892		3,736
Interest expense	(143,321)		(131,363)		(117,597)
Loss on early extinguishment of debt	0		0		(12,225)
Gain on foreign currency transactions	5,449		6,197		16,921
Gain on foreign currency swap contracts	0		0		24,545
Remeasurement gain on HEP pipeline interest acquisitions	0		0		36,254
Other, net	5,013		2,923		4,182
Other income (expense) total	(105,540)		(99,526)		(31,674)
Income (loss) before income taxes	1,171,504		1,524,467		868,863
Income tax expense (benefit):
Current	220,486		270,274		125,143
Deferred	78,666		76,969		(137,522)
Income tax expense (benefit) total	299,152		347,243		(12,379)
Net income (loss)	872,352		1,177,224		881,242
Less net income attributable to noncontrolling interest	99,964		79,264		75,847
Net income attributable to HollyFrontier stockholders	$ 772,388		$ 1,097,960		$ 805,395
Earnings (loss) per share attributable to HollyFrontier stockholders:
Basic	$ 4.64		$ 6.25		$ 4.54
Diluted	$ 4.61		$ 6.19		$ 4.52
Average number of common shares outstanding:
Basic	166,287		175,009		176,174
Diluted	167,385		176,661		177,196
[1]	For 2019, income from operations reflects non-cash lower of cost or market inventory valuation reductions of $232.3 million for the first quarter, and charges of $47.8 million , $34.1 million and $30.7 million for the second, third and fourth quarters, respectively.
[2]	For 2018, income from operations reflects non-cash lower of cost or market inventory valuation reductions of $103.8 million and $106.9 million for the first and second quarters, respectively, and charges of $17.8 million and $329.2 million
[3]	For 2019, income from operations reflects goodwill impairment charges of $152.7 million in the second quarter.

Consolidated Statements Of Comp

Consolidated Statements Of Comprehensive Income - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Statement of Comprehensive Income [Abstract]
Net income (loss)	$ 872,352	$ 1,177,224	$ 881,242
Other comprehensive income (loss):
Foreign currency translation adjustment	13,337	(38,227)	22,151
Unrealized loss on marketable securities	0	0	(4)
Change in fair value of cash flow hedging instruments	14,364	5,166	2,919
Reclassification adjustments to net income on settlement of cash flow hedging instruments	(19,713)	6,055	10,448
Amortization of unrealized loss attributable to discontinued cash flow hedges	0	0	1,080
Net unrealized gain on hedging instruments	(5,349)	11,221	14,447
Actuarial loss on pension plans	(990)	(923)	(1,162)
Actuarial gain (loss) on post-retirement healthcare plans	(2,412)	2,612	(1,058)
Post-retirement healthcare plans gain reclassified to net income	(3,587)	(3,481)	(3,481)
Actuarial gain (loss) on retirement restoration plan	(224)	258	(123)
Retirement restoration plan loss reclassified to net income	6	27	17
Net change in other post-retirement benefit obligations	(7,207)	(1,507)	(5,807)
Other comprehensive income (loss) before income taxes	781	(28,513)	30,787
Income tax expense (benefit)	(370)	(5,585)	11,349
Other comprehensive income (loss)	1,151	(22,928)	19,438
Total comprehensive income (loss)	873,503	1,154,296	900,680
Less noncontrolling interest in comprehensive income	99,964	79,264	75,790
Comprehensive income attributable to HollyFrontier stockholders	$ 773,539	$ 1,075,032	$ 824,890

Consolidated Statements Of Cash

Consolidated Statements Of Cash Flows - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Cash flows from operating activities:
Net income (loss)	$ 872,352	$ 1,177,224	$ 881,242
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	509,925	437,324	409,937
Goodwill and long-lived asset impairment	152,712	0	19,247
Lower of cost or market inventory valuation adjustment		136,305
Lower of cost or market inventory valuation adjustment	(119,775)	136,305	(108,685)
Earnings of equity method investments, inclusive of distributions	(213)	(149)	1,450
Loss on early extinguishment of debt attributable to unamortized discount	0	0	2,475
Remeasurement gain on HEP pipeline interest acquisitions	0	0	36,254
Loss on sale of assets	50	2,171	508
Deferred income taxes	78,666	76,969	(137,522)
Equity-based compensation expense	42,269	42,172	42,337
Change in fair value – derivative instruments	36,888	31,515	4,265
(Increase) decrease in current assets:
Accounts receivable	(150,437)	35,793	(115,322)
Inventories	(91,599)	136,551	(162,297)
Income taxes receivable	(32,368)	7,752	50,601
Prepayments and other	(3,633)	(10,340)	(6,753)
Increase (decrease) in current liabilities:
Accounts payable	312,794	(326,030)	188,975
Income taxes payable	9,048	15,281	(18,525)
Accrued liabilities	13,748	53,281	57,227
Turnaround expenditures	(318,415)	(217,228)	(135,104)
Other, net	(18,601)	18,855	22,118
Net cash provided by operating activities	1,548,611	1,554,416	951,390
Cash flows from investing activities:
Additions to properties, plants and equipment	(263,651)	(256,888)	(227,449)
Purchase of PCLI, net of cash acquired	(662,665)	(54,179)	(870,627)
Purchase of pipeline interests, net of cash acquired - HEP	(17,886)	0	0
Proceeds from sale of assets	194	3,100	1,377
Purchases of marketable securities	0	0	(41,565)
Sales and maturities of marketable securities	0	0	465,716
Other, net	1,206	1,588	3,134
Net cash used for investing activities	(972,914)	(360,520)	(959,670)
Cash flows from financing activities:
Proceeds (repayments) of financing arrangements	0	32,547	0
Proceeds from issuance of common units - HEP	0	114,759	52,110
Purchase of treasury stock	(533,083)	(363,437)	(15,926)
Dividends	(225,170)	(233,544)	(235,508)
Distributions to noncontrolling interest	(132,268)	(125,653)	(110,351)
Proceeds from Contributions from Affiliates	3,210	0	0
Payments on finance leases	(1,551)	0	0
Other, net	(1,893)	0	(13,955)
Net cash used for financing activities	(848,255)	(664,328)	(72,630)
Effect of exchange rate on cash flow	2,968	(5,573)	1,088
Cash and cash equivalents:
Increase (decrease) for the period	(269,590)	523,995	(79,822)
Beginning of period	1,154,752	630,757	710,579
End of period	885,162	1,154,752	630,757
Cash paid during the period for:
Interest	133,809	130,106	124,375
Income taxes, net	(178,967)	(252,644)	(93,272)
HEP
Cash flows from investing activities:
Additions to properties, plants and equipment	(30,112)	(54,141)	(44,810)
Purchase of pipeline interests, net of cash acquired - HEP	0	0	(245,446)
Cash flows from financing activities:
Borrowings under credit agreement	365,500	337,000	995,000
Repayments under credit agreement	(323,000)	(426,000)	(536,000)
Proceeds from issuance of senior notes	0	0	101,750
Redemption of senior notes - HEP	0	0	$ (309,750)
Cash and cash equivalents:
Beginning of period	3,045
End of period	$ 13,287	$ 3,045

Consolidated Statements Of Equi

Consolidated Statements Of Equity - USD ($) $ in Thousands	Total	Common Stock	Additional Capital	Retained Earnings	Accumulated Other Comprehensive Income (Loss)	Treasury Stock	Non-controlling Interest
Beginning Balance at Dec. 31, 2016	$ 5,301,985	$ 2,560	$ 4,026,805	$ 2,776,728	$ 10,612	$ (2,135,311)	$ 620,591
Net income (loss)	881,242			805,395			75,847
Dividends	(235,508)			(235,508)
Distributions to noncontrolling interest holders	(110,351)						(110,351)
Other comprehensive income (loss), net of tax	19,438				19,495	0	(57)
Equity attributable to HEP common unit issuances, net of tax	8,174		69,802		(238)		(61,390)
Equity awards issued on PCLI acquisition	6,600		6,600
Issuance of common stock under incentive compensation plans, net of forfeitures			(10,326)			10,326
Equity-based compensation	42,337		39,815				2,522
Purchase of treasury stock	(15,926)					(15,926)	0
Purchase of HEP units for restricted grants	(605)						(605)
Other	(446)						(446)
Ending Balance at Dec. 31, 2017	5,896,940	2,560	4,132,696	3,346,615	29,869	(2,140,911)	526,111
Net income (loss)	1,177,224			1,097,960			79,264
Dividends	(233,544)			(233,544)
Distributions to noncontrolling interest holders	(125,653)						(125,653)
Other comprehensive income (loss), net of tax	(22,928)				(22,928)	0	0
Equity attributable to HEP common unit issuances, net of tax	100,333		42,199				58,134
Issuance of common stock under incentive compensation plans, net of forfeitures			(17,742)			17,742
Equity-based compensation	42,172		38,972				3,200
Purchase of treasury stock	(367,470)					(367,470)	0
Purchase of HEP units for restricted grants	(568)						(568)
Ending Balance at Dec. 31, 2018	6,459,059	2,560	4,196,125	4,196,902	13,623	(2,490,639)	540,488
Cumulative Effect of New Accounting Principle in Period of Adoption	(7,447)			(14,129)	6,682
Net income (loss)	872,352			772,388			99,964
Dividends	(225,170)			(225,170)
Distributions to noncontrolling interest holders	(132,268)						(132,268)
Other comprehensive income (loss), net of tax	1,151				1,151	0	0
Equity attributable to HEP common unit issuances, net of tax	(139)		0		0		(139)
Issuance of common stock under incentive compensation plans, net of forfeitures			(31,314)			31,314
Equity-based compensation	42,269		39,736				2,533
Purchase of treasury stock	(528,483)					(528,483)	0
Purchase of HEP units for restricted grants	(1,893)						(1,893)
Contribution from joint venture partner	22,548						22,548
Ending Balance at Dec. 31, 2019	$ 6,509,426	$ 2,560	$ 4,204,547	$ 4,744,120	$ 14,774	$ (2,987,808)	$ 531,233

Description of Business and Sum

Description of Business and Summary of Significant Accounting Policies	12 Months Ended
	Dec. 31, 2019
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Description of Business and Summary of Significant Accounting Policies	Description of Business and Summary of Significant Accounting Policies Description of Business: 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 Annual Report on Form 10-K 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 an independent petroleum refiner and marketer that produces high-value light products such as gasoline, diesel fuel, jet fuel and other specialty products. We own and operate petroleum refineries that serve markets throughout the Mid-Continent, Southwest and Rocky Mountain regions of the United States. In addition, we produce base oils and other specialized lubricants in the United States, Canada and the Netherlands, with retail and wholesale marketing of our products through a global sales network with locations in Canada, the United States, Europe, China and Latin America. As of December 31, 2019 , 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 Petro-Canada Lubricants Inc. (“PCLI”) located in Mississauga, Ontario, which produces base oils and other specialty lubricant products; • owned and operated Sonneborn with manufacturing facilities in Petrolia, Pennsylvania and the Netherlands, which produce specialty lubricant products, such as white oils, petrolatums and waxes; • owned and operated Red Giant Oil Company LLC (“Red Giant Oil”), which supplies locomotive engine oil and has storage and distribution facilities in Iowa, Kansas, Utah and Wyoming, along with a blending and packaging facility in Texas; • owned and operated HollyFrontier Asphalt Company LLC (“HFC Asphalt”), which operates various asphalt terminals in Arizona, New Mexico and Oklahoma; and • owned a 57% limited partner interest and a non-economic general partner interest in HEP, a variable interest entity (“VIE”). HEP 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. On November 12, 2018, we entered into an equity purchase agreement to acquire 100% of the issued and outstanding capital stock of Sonneborn US Holdings Inc. and 100% of the membership rights in Sonneborn Coöperatief U.A. (collectively, “Sonneborn”). The acquisition closed on February 1, 2019. On July 10, 2018, we entered into a definitive agreement to acquire Red Giant Oil, a privately-owned lubricants company. The acquisition closed on August 1, 2018. On October 29, 2016, we entered into a share purchase agreement with Suncor Energy Inc. (“Suncor”) to acquire 100% of the outstanding capital stock of PCLI. The acquisition closed on February 1, 2017. See Note 2 for additional information on these acquisitions. Principles of Consolidation: Our consolidated financial statements include our accounts and the accounts of partnerships and joint ventures that we control through an ownership interest greater than 50% or through a controlling financial interest with respect to variable interest entities. All significant intercompany transactions and balances have been eliminated. Variable Interest Entities: HEP is a VIE as defined under U.S. generally accepted accounting principles (“GAAP”). A VIE is a legal entity whose equity owners do not have sufficient equity at risk for the entity to finance its activities without additional subordinated financial support or, as a group, the equity holders lack the power, through voting rights, to direct the activities that most significantly impact the entity's financial performance, the obligation to absorb the entity's expected losses or rights to expected residual returns. As the general partner of HEP, we have the sole ability to direct the activities of HEP that most significantly impact HEP's financial performance, and therefore as HEP's primary beneficiary, we consolidate HEP. In 2019, HEP Cushing LLC, a wholly-owned subsidiary of HEP, and Plains Marketing, L.P., a wholly-owned subsidiary of Plains All American Pipeline, L.P. (“Plains”), formed a 50/50 joint venture, Cushing Connect Pipeline & Terminal LLC. Cushing Connect Pipeline & Terminal LLC and its two subsidiaries, Cushing Connect Pipeline and Cushing Connect Terminal are each VIE's because they do not have sufficient equity at risk to finance their activities without additional financial support. HEP is the primary beneficiary of two of these entities as HEP is constructing and will operate the Cushing Connect Pipeline, and HEP has more ability to direct the activities that most significantly impact the financial performance of Cushing Connect Pipeline & Terminal LLC and Cushing Connect Pipeline.Therefore, HEP consolidates these two entities. HEP is not the primary beneficiary of Cushing Connect Terminal, which HEP accounts for using the equity method of accounting. Use of Estimates : The preparation of financial statements in accordance with GAAP requires management to make estimates and assumptions that affect the amounts reported in the financial statements and accompanying notes. Actual results could differ from those estimates. Cash Equivalents: We consider all highly liquid instruments with a maturity of three months or less at the date of purchase to be cash equivalents. Cash equivalents are stated at cost, which approximates market value and are primarily invested in highly-rated instruments issued by government or municipal entities with strong credit standings. Balance Sheet Offsetting : We purchase and sell inventories of crude oil with certain same-parties that are net settled in accordance with contractual net settlement provisions. Our policy is to present such balances on a net basis since it presents our accounts receivables and payables consistent with our contractual settlement provisions. 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 $4.5 million at December 31, 2019 and $3.6 million at December 31, 2018 . Accounts receivable attributable to crude oil resales generally represent the sale of excess crude oil to other purchasers and / or users in cases when our crude oil supplies are in excess of our immediate needs as well as certain reciprocal buy / sell exchanges of crude oil. At times we enter into such buy / sell exchanges to facilitate the delivery of quantities to certain locations. In many cases, we enter into net settlement agreements relating to the buy / sell arrangements, which may mitigate credit risk. Inventories: Inventories related to our refining operations are stated at the lower of cost, using the last-in, first-out (“LIFO”) method for crude oil and unfinished and finished refined products, or market. Cost, consisting of raw material, transportation and conversion costs, is determined using the LIFO inventory valuation methodology and market is determined using current replacement costs. Under the LIFO method, the most recently incurred costs are charged to cost of sales and inventories are valued at the earliest acquisition costs. 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. Inventories of our Petro-Canada Lubricants and Sonneborn businesses are stated at the lower of cost, using the first-in, first-out ("FIFO") method, or net realizable value. Inventories consisting of process chemicals, materials and maintenance supplies and renewable identification numbers ("RINs") are stated at the lower of weighted-average cost or net realizable value. Leases: At inception, we determine if an arrangement is or contains a lease. Right-of-use (“ROU”) assets represent our right to use an underlying asset for the lease term and lease liabilities represent our payment obligation under the leasing arrangement. ROU assets and lease liabilities are recognized at the commencement date based on the present value of lease payments over the lease term. We use our estimated incremental borrowing rate (“IBR”) to determine the present value of lease payments as most of our leases do not contain an implicit rate. Our IBR represents the interest rate which we would pay to borrow, on a collateralized basis, an amount equal to the lease payments over a similar term in a similar economic environment. We use the implicit rate when readily determinable. Operating leases are recorded in operating lease right-of-use assets and current and noncurrent operating lease liabilities on our consolidated balance sheet. Finance leases are included in properties, plants and equipment and accrued liabilities and other long-term liabilities on our consolidated balance sheet. Our lease term includes an option to extend the lease when it is reasonably certain that we will exercise that option. Leases with a term of 12 months or less are not recorded on our balance sheet and lease expense is accounted for on a straight-line basis. For certain equipment leases, we apply a portfolio approach for the operating lease ROU assets and liabilities. Also, as a lessee, we separate non-lease components that are identifiable and exclude them from the determination of net present value of lease payment obligations. In addition, HEP, as a lessor, does not separate the non-lease (service) component in contracts in which the lease component is the dominant component. HEP treats these combined components as an operating lease. Derivative Instruments: All derivative instruments are recognized as either assets or liabilities in our consolidated balance sheets and are measured at fair value. Changes in the derivative instrument's fair value are recognized in earnings unless specific hedge accounting criteria are met. See Note 14 for additional information. Properties, Plants and Equipment: Properties, plants and equipment are stated at cost. Depreciation is provided by the straight-line method over the estimated useful lives of the assets, primarily 15 to 32 years for refining, pipeline and terminal facilities, 10 to 40 years for buildings and improvements, 5 to 30 years for other fixed assets and 5 years for vehicles. Asset Retirement Obligations: We record legal obligations associated with the retirement of long-lived assets that result from the acquisition, construction, development and / or the normal operation of long-lived assets. The fair value of the estimated cost to retire a tangible long-lived asset is recorded as a liability with the associated retirement costs capitalized as part of the asset's carrying amount in the period in which it is incurred and when a reasonable estimate of the fair value of the liability can be made. If a reasonable estimate cannot be made at the time the liability is incurred, we record the liability when sufficient information is available to estimate the liability's fair value. Certain of our refining assets have no recorded liability for asset retirement obligations since the timing of any retirement and related costs are currently indeterminable. Our asset retirement obligations were $35.9 million and $28.7 million at December 31, 2019 and 2018 , respectively, which are included in “Other long-term liabilities” in our consolidated balance sheets. Accretion expense was insignificant for the years ended December 31, 2019 , 2018 and 2017 . Intangibles, Goodwill and Long-lived Assets: Intangible assets are assets (other than financial assets) that lack physical substance, and goodwill represents the excess of the cost of an acquired entity over the fair value of the assets acquired and liabilities assumed. Goodwill acquired in a business combination and intangibles with indefinite useful lives are not amortized, whereas intangible assets with finite useful lives are amortized on a straight-line basis. Goodwill and intangible assets that are not subject to amortization are tested for impairment annually or more frequently if an event occurs or circumstances change that would more likely than not reduce the fair value of a reporting unit below its carrying amount. Our goodwill impairment testing first entails either a quantitative assessment or an optional qualitative assessment to determine whether it is more likely than not that the fair value of a reporting unit is less than its carrying amount. If we determine that based on the qualitative factors that it is more likely than not that the fair value of the reporting unit is greater than its carrying amount, a quantitative test is performed in which we estimate the fair value of the related reporting unit. If the carrying amount of a reporting unit exceeds its fair value, the goodwill of that reporting unit is impaired, and we measure goodwill impairment as the excess of the carrying amount of the reporting unit over the related fair value. The carrying amount of our intangible assets and goodwill may fluctuate from period to period due to the effects of foreign currency translation adjustments on goodwill and intangible assets assigned to our Lubricants and Specialty Products segment. Our long-lived assets principally consist of our refining assets that are organized as refining asset groups and the assets of our Lubricants and Specialty Products asset groups. The refinery asset groups also constitute our individual refinery reporting units that are used for testing and measuring goodwill impairments. Our long-lived assets are evaluated for impairment by identifying whether indicators of impairment exist and if so, assessing whether the long-lived assets are recoverable from estimated future undiscounted cash flows. The actual amount of impairment loss measured, if any, is equal to the amount by which the asset group’s carrying value exceeds its fair value. See Note 11 for additional information regarding our goodwill and long-lived assets including impairment charges recorded during the years ended December 31, 2019 and 2017. Equity Method Investments: We account for investments in which we have a noncontrolling interest, yet have significant influence over the entity, using the equity method of accounting, whereby we record our pro-rata share of earnings, and contributions to and distributions from joint ventures as adjustments to our investment balance. HEP has 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 50% interest in Cheyenne Pipeline, LLC, the owner of a pipeline running from Fort Laramie, Wyoming to Cheyenne, Wyoming (the “Cheyenne Pipeline”). HEP also accounts for Cushing Connect Terminal, a subsidiary of the Cushing Connect Pipeline & Terminal LLC joint venture, using the equity method of accounting, as HEP does not have the ability to direct the activities that most significantly impact the entity. As of December 31, 2019 , HEP's underlying equity and recorded investment balances in the joint ventures are $90.8 million and $120.1 million respectively. The differences are being amortized as adjustments to HEP's pro-rata share of earnings in the joint ventures. Revenue Recognition: Revenues on refined product and excess crude oil sales are recognized when delivered (via pipeline, in-tank or rack) and the customer obtains control of such inventory, which is typically when title passes and the customer is billed. All revenues are reported inclusive of shipping and handling costs billed and exclusive of any taxes billed to customers. Shipping and handling costs incurred are reported as cost of products sold. Our lubricants and specialty products business has sales agreements with marketers and distributors that provide certain rights of return or provisions for the repurchase of products previously sold to them. Under these agreements, revenues and cost of revenues are deferred until the products have been sold to end customers. Our lubricants and specialty products business also has agreements that create an obligation to deliver products at a future date for which consideration has already been received and recorded as deferred revenue. This revenue is recognized when the products are delivered to the customer. HEP recognizes revenues as products are shipped through its pipelines and terminals and as other services are rendered. Additionally, HEP has certain throughput agreements that specify minimum volume requirements, whereby HEP bills a customer for a minimum level of shipments in the event a customer ships below their contractual requirements. If there are no future performance obligations, HEP recognizes these deficiency payments as revenue. In certain of these throughput agreements, a customer may later utilize such shortfall billings as credit towards future volume shipments in excess of its minimum levels within its respective contractual shortfall make-up period. Such amounts represent an obligation to perform future services, which may be initially deferred and later recognized as revenue based on estimated future shipping levels, including the likelihood of a customer’s ability to utilize such amounts prior to the end of the contractual shortfall make-up period. HEP recognizes the service portion of these deficiency payments as revenue when HEP does not expect it will be required to satisfy these performance obligations in the future based on the pattern of rights exercised by the customer. Payment terms under our contracts with customers are consistent with industry norms and are typically payable within 30 days of the date of invoice. Cost Classifications: Costs of products sold include the cost of crude oil, other feedstocks, blendstocks and purchased finished products, inclusive of transportation costs. We purchase crude oil that at times exceeds the supply needs of our refineries. Quantities in excess of our needs are sold at market prices to purchasers of crude oil that are recorded on a gross basis with the sales price recorded as revenues and the corresponding acquisition cost as cost of products sold. Additionally, we enter into buy / sell exchanges of crude oil with certain parties to facilitate the delivery of quantities to certain locations that are netted at cost. Operating expenses include direct costs of labor, maintenance materials and services, utilities and other direct operating costs. Selling, general and administrative expenses include compensation, professional services and other support costs. Deferred Maintenance Costs: Our refinery units require regular major maintenance and repairs which are commonly referred to as “turnarounds.” Catalysts used in certain refinery processes also require regular “change-outs.” The required frequency of the maintenance varies by unit and by catalyst, but generally is every two to five years . Turnaround costs are deferred and amortized over the period until the next scheduled turnaround. Other repairs and maintenance costs are expensed when incurred. Deferred turnaround and catalyst amortization expense was $141.9 million , $110.9 million and $112.9 million for the years ended December 31, 2019 , 2018 and 2017 , respectively. Environmental Costs: 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 and routinely assess our recorded environmental obligations, if any, with respect to such matters. 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 clean-up 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. Contingencies: We are subject to proceedings, lawsuits and other claims related to environmental, labor, product and other matters. We are required to assess the likelihood of any adverse judgments or outcomes to these matters as well as potential ranges of probable losses. A determination of the amount of reserves required, if any, for these contingencies is made after careful analysis of each individual issue. The required reserves may change in the future due to new developments in each matter or changes in approach such as a change in settlement strategy in dealing with these matters. Foreign Currency Translation: Assets and liabilities recorded in foreign currencies are translated into U.S. dollars using exchange rates in effect as of the balance sheet date. Revenue and expense accounts are translated using the weighted-average exchange rates during the period presented. Foreign currency translation adjustments are recorded as a component of accumulated other comprehensive income. In connection with our PCLI acquisition on February 1, 2017, we issued intercompany notes to initially fund certain of our foreign businesses. Remeasurement adjustments resulting from the conversion of such intercompany financing amounts to functional currencies are recorded as gains and losses as a component of other income (expense) in the income statement. Such adjustments are not recorded to the Lubricants and Specialty Products segment operations, but to Corporate and Other. See Note 20 for additional information on our segments. Income Taxes: Provisions for income taxes include deferred taxes resulting from temporary differences in income for financial and tax purposes, using the liability method of accounting for income taxes. The liability method requires the effect of tax rate changes on deferred income taxes to be reflected in the period in which the rate change was enacted. The liability method also requires that deferred tax assets be reduced by a valuation allowance unless it is more likely than not that the assets will be realized. Potential interest and penalties related to income tax matters are recognized in income tax expense. We believe we have appropriate support for the income tax positions taken and to be taken on our income tax returns and that our accruals for tax liabilities are adequate for all open years based on an assessment of many factors, including past experience and interpretations of tax law applied to the facts of each matter. 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 for as inventory repurchase obligations under which proceeds received under the initial sell is recognized as inventory repurchase obligations that are subsequently reversed when the inventories are repurchased. For the years ended December 31, 2019 , 2018 and 2017 , we received proceeds of $52.1 million , $51.2 million and $47.4 million and subsequently repaid $49.2 million , $52.5 million and $49.8 million , respectively, under these sell / buy transactions. Accounting Pronouncements - Recently Adopted Goodwill Impairment Testing In January 2017, Accounting Standard Update (“ASU”) 2017-04, “Simplifying the Test for Goodwill Impairment,” was issued amending the testing for goodwill impairment by eliminating Step 2 from the goodwill impairment test. Step 2 measures a goodwill impairment loss by comparing the implied fair value of a reporting unit’s goodwill with the carrying amount of that goodwill. We adopted this standard effective in the second quarter of 2019, and the adoption of this standard resulted in no change to the amount of goodwill impairment recorded in the second quarter of 2019. Leases In February 2016, ASU 2016-02, “Leases,” was issued requiring leases to be measured and recognized as a lease liability, with a corresponding ROU asset on the balance sheet. We adopted this standard effective January 1, 2019 using the optional transition method, whereby comparative prior period financial information will not be restated and will continue to be reported under the lease accounting standard in effect during those periods. We also elected practical expedients provided by the new standard, including the package of practical expedients, whereby we did not reassess lease classification or initial indirect lease cost under the new standard. In addition, we elected to exclude short-term leases, which at inception have a lease term of 12 months or less, from the amounts recognized on our balance sheet. In addition, HEP elected an expedient whereby a lessor does not have to separate non-lease (service) components from lease components under certain contracts. Under this expedient, HEP treated the combined components of its leases with third parties (i.e., the contracts that are not eliminated upon consolidation of HEP by HFC) as an operating lease in which the dominant component was a lease in accordance with ASC 842. Upon adoption of this standard, we recognized $433.4 million of lease liabilities and corresponding ROU assets on our consolidated balance sheet. Adoption of this standard did not have a material impact on our results of operations or cash flows. In addition, upon our acquisition of Sonneborn on February 1, 2019, we recognized $15.6 million of lease liabilities and corresponding ROU assets. Accounting Pronouncements - Not Yet Adopted Credit Losses Measurement In June 2016, ASU 2016-13, “Measurement of Credit Losses on Financial Instruments,” was issued requiring measurement of all expected credit losses for certain types of financial instruments, including trade receivables, held at the reporting date based on historical experience, current conditions and reasonable and supportable forecasts. This standard is effective January 1, 2020, and our preliminary review of historic and expected credit losses indicates the amount of expected credit losses upon adoption would not be materially different from the current allowance for doubtful accounts balance.

Acquisitions

Acquisitions	12 Months Ended
	Dec. 31, 2019
Schedule of assets purchased and liabilities assumed in acquisition [Abstract]
PCLI Acquisition	Acquisitions Sonneborn On November 12, 2018, we entered into an equity purchase agreement to acquire 100% of the capital stock of Sonneborn. The acquisition closed on February 1, 2019. Sonneborn is a producer of specialty hydrocarbon chemicals such as white oils, petrolatums and waxes with manufacturing facilities in the United States and Europe. Aggregate consideration totaled $701.6 million and consisted of $662.7 million in cash paid at acquisition, net of cash acquired. This transaction was accounted for as a business combination using the acquisition method of accounting, with the purchase price allocated to the fair value of the acquired Sonneborn assets and liabilities as of the February 1 acquisition date, with the excess purchase price recorded as goodwill assigned to our Lubricants and Specialty Products segment. The following summarizes our valuation of the Sonneborn assets and liabilities acquired on February 1, 2019: (In millions) Cash and cash equivalents $ 38.9 Accounts receivable and other current assets 58.4 Inventories 81.0 Properties, plants and equipment 168.2 Goodwill 282.3 Intangibles and other noncurrent assets 231.5 Accounts payable and accrued liabilities (47.9 ) Deferred income tax liabilities (83.0 ) Other long-term liabilities (27.8 ) $ 701.6 The purchase price allocation resulted in the recognition of $282.3 million in goodwill, which relates to the established workforce and global market presence of the acquired business as well as the expected synergies to be gained upon combining with our existing operations to form an expanded lubricants and specialty products business. This goodwill is not deductible for income tax purposes. Intangibles include customer relationships, trademarks, patents and technical know-how totaling $214.6 million that are being amortized on a straight-line basis over a 12 -year period. Our consolidated financial and operating results reflect the Sonneborn operations beginning February 1, 2019. Our results of operations include revenue and income before income taxes of $340.3 million and $5.1 million , respectively, for the period from February 1, 2019 through December 31, 2019 related to these operations. The following unaudited pro forma information for the years ended December 31, 2019 and 2018 presents the revenues and operating income for our Lubricants and Specialty Products segment assuming the acquisition of Sonneborn had occurred as of January 1, 2018. The proforma effects on consolidated HFC revenue and operating income are not material. Years Ended December 31, 2019 2018 (In thousands) Sales and other revenues $ 2,124,778 $ 2,195,690 Operating income (1) $ (116,254 ) $ 99,371 (1) The year ended December 31, 2019 , includes goodwill impairment of $152.7 million from the PCLI reporting unit of our Lubricants and Specialty Products segment. See Note 11 for additional information on this goodwill impairment. Red Giant Oil On July 10, 2018, we entered into a definitive agreement to acquire Red Giant Oil, a privately-owned lubricants company. The acquisition closed on August 1, 2018. Cash consideration paid was $54.2 million . Red Giant Oil is one of the largest suppliers of locomotive engine oil in North America and is headquartered in Council Bluffs, Iowa. This transaction was accounted for as a business combination using the acquisition method of accounting, with the purchase price allocated to the fair value of the acquired Red Giant Oil assets and liabilities as of the August 1 acquisition date, with the excess purchase price recorded as goodwill assigned to our Lubricants and Specialty Products segment. This goodwill is deductible for income tax purposes. Fair values are as follows: current assets $14.4 million , properties and equipment $21.3 million , intangible assets $9.7 million , goodwill $10.8 million and current liabilities $2.0 million . PCLI On October 29, 2016, we entered into a share purchase agreement with Suncor to acquire 100% of the outstanding capital stock of PCLI. The acquisition closed on February 1, 2017. Cash consideration paid was $862.1 million , or $1.125 billion Canadian dollars. PCLI is located in Mississauga, Ontario, Canada and is a producer of lubricant products such as base oils, white oils, specialty products and finished lubricants. The operations of our Petro-Canada Lubricants business also include marketing of these products to both retail and wholesale outlets through a global sales network with locations in Canada, the United States, Europe and China. Aggregate consideration totaled $906.7 million and consists of $862.1 million in cash paid to Suncor at acquisition, a closing date working capital settlement of $30.6 million that was paid to Suncor in the second quarter of 2017, an accrued payable in the amount of $7.4 million , and $6.6 million representing a portion of the fair value of replacement restricted stock unit awards issued to PCLI employees that relate to pre-acquisition services. This transaction was accounted for as a business combination using the acquisition method of accounting, with the purchase price allocated to the fair value of the acquired PCLI assets and liabilities as of the February 1 acquisition date, with the excess purchase price recorded as goodwill assigned to our Lubricants and Specialty Products segment. This goodwill is not deductible for income tax purposes. Fair values are as follows: cash and cash equivalents $21.6 million , current assets $333.4 million , properties, plants and equipment $438.0 million , goodwill $194.8 million , intangibles and other noncurrent assets $124.3 million , current liabilities $87.4 million and deferred income tax and other long-term liabilities $118.0 million . We incurred $24.2 million , $3.6 million and $27.9 million , for the years ended December 31, 2019 , 2018 and 2017 , respectively, in incremental direct integration and regulatory costs that principally relate to legal, advisory, regulatory and other professional fees and are presented as selling, general and administrative expenses.

Leases

Leases	12 Months Ended
	Dec. 31, 2019
Leases [Abstract]
Lessee, Operating Leases	Leases We have operating and finance leases for land, buildings, pipelines, storage tanks, transportation and other equipment for our operations. Our leases have remaining terms of one to 60 years , some of which include options to extend the leases for up to 10 years . Certain of our leases for pipeline assets include provisions for variable payments which are based on a measure of throughput and also contain a provision for the lessor to adjust the rate per barrel periodically over the life of the lease. These variable costs are not included in the initial measurement of ROU assets and lease liabilities. The following table presents the amounts and balance sheet locations of our operating and financing leases recorded on our consolidated balance sheet. December 31, 2019 (In thousands) Operating leases: Operating lease right-of-use assets $ 467,109 Operating lease liabilities 104,415 Noncurrent operating lease liabilities 364,420 Total operating lease liabilities $ 468,835 Finance leases: Properties, plants and equipment, at cost $ 13,406 Accumulated amortization (6,233 ) Properties, plants and equipment, net $ 7,173 Accrued liabilities $ 1,567 Other long-term liabilities 5,163 Total finance lease liabilities $ 6,730 Supplemental balance sheet information related to our leases was as follows: December 31, 2019 Weighted average remaining lease term (in years) Operating leases 7.2 Finance leases 8.1 Weighted average discount rate Operating leases 4.0 % Finance leases 5.2 % The components of lease expense were as follows: Year Ended (In thousands) Operating lease expense $ 112,770 Finance lease expense: Amortization of right-of-use assets 1,543 Interest on lease liabilities 334 Variable lease cost 4,449 Total lease expense $ 119,096 Supplemental cash flow information related to leases was as follows: Year Ended (In thousands) Cash paid for amounts included in the measurement of lease liabilities: Operating cash flows from operating leases $ 116,980 Operating cash flows from finance leases $ 334 Financing cash flows from finance leases $ 1,551 Right-of-use assets obtained in exchange for lease obligations: Operating leases $ 121,750 As of December 31, 2019 , minimum future lease payments of our operating and finance lease obligations were as follows: Operating Finance (In thousands) 2020 $ 121,511 $ 2,128 2021 102,480 1,304 2022 87,344 1,056 2023 72,751 1,110 2024 49,901 626 2025 and thereafter 124,612 2,255 Future minimum lease payments 558,599 8,479 Less: imputed interest 89,764 1,749 Total lease obligations 468,835 6,730 Less: current obligations 104,415 1,567 Long-term lease obligations $ 364,420 $ 5,163 As of December 31, 2019 , we have entered into certain leases that have not yet commenced. Such leases include a 15 -year lease for plant equipment, with estimated future lease payments of $6.8 million , expected to commence in the second quarter of 2020, and a 5 -year lease for office equipment, with estimated future lease payments of $0.4 million , expected to commence in the first quarter of 2020. Our consolidated income statement reflects lease revenue recognized by HEP for contracts with third parties in which HEP is the lessor. Lease income recognized for the year ended December 31, 2019 was $33.2 million for operating leases. Annual minimum undiscounted lease payments in which HEP is a lessor to third-party contracts as of December 31, 2019 were as follows: (In thousands) 2020 $ 18,839 2021 12,794 2022 11,377 2023 11,248 2024 11,248 Thereafter 2,812 Total $ 68,318 The following are disclosures related to periods prior to our adoption of ASC 842. We leased certain office and storage facilities, rail cars and other equipment under long-term operating leases, most of which contained renewal options. At December 31, 2018, the minimum future rental commitments under operating leases having non-cancellable lease terms in excess of one year were as follows: (In thousands) 2019 $ 104,362 2020 92,491 2021 84,581 2022 70,874 2023 61,063 Thereafter 88,206 Total $ 501,577 Rental expense charged to operations was $84.1 million and $95.7 million for the years ended December 31, 2018 and 2017 , respectively.
Lessor, Operating Leases	Leases We have operating and finance leases for land, buildings, pipelines, storage tanks, transportation and other equipment for our operations. Our leases have remaining terms of one to 60 years , some of which include options to extend the leases for up to 10 years . Certain of our leases for pipeline assets include provisions for variable payments which are based on a measure of throughput and also contain a provision for the lessor to adjust the rate per barrel periodically over the life of the lease. These variable costs are not included in the initial measurement of ROU assets and lease liabilities. The following table presents the amounts and balance sheet locations of our operating and financing leases recorded on our consolidated balance sheet. December 31, 2019 (In thousands) Operating leases: Operating lease right-of-use assets $ 467,109 Operating lease liabilities 104,415 Noncurrent operating lease liabilities 364,420 Total operating lease liabilities $ 468,835 Finance leases: Properties, plants and equipment, at cost $ 13,406 Accumulated amortization (6,233 ) Properties, plants and equipment, net $ 7,173 Accrued liabilities $ 1,567 Other long-term liabilities 5,163 Total finance lease liabilities $ 6,730 Supplemental balance sheet information related to our leases was as follows: December 31, 2019 Weighted average remaining lease term (in years) Operating leases 7.2 Finance leases 8.1 Weighted average discount rate Operating leases 4.0 % Finance leases 5.2 % The components of lease expense were as follows: Year Ended (In thousands) Operating lease expense $ 112,770 Finance lease expense: Amortization of right-of-use assets 1,543 Interest on lease liabilities 334 Variable lease cost 4,449 Total lease expense $ 119,096 Supplemental cash flow information related to leases was as follows: Year Ended (In thousands) Cash paid for amounts included in the measurement of lease liabilities: Operating cash flows from operating leases $ 116,980 Operating cash flows from finance leases $ 334 Financing cash flows from finance leases $ 1,551 Right-of-use assets obtained in exchange for lease obligations: Operating leases $ 121,750 As of December 31, 2019 , minimum future lease payments of our operating and finance lease obligations were as follows: Operating Finance (In thousands) 2020 $ 121,511 $ 2,128 2021 102,480 1,304 2022 87,344 1,056 2023 72,751 1,110 2024 49,901 626 2025 and thereafter 124,612 2,255 Future minimum lease payments 558,599 8,479 Less: imputed interest 89,764 1,749 Total lease obligations 468,835 6,730 Less: current obligations 104,415 1,567 Long-term lease obligations $ 364,420 $ 5,163 As of December 31, 2019 , we have entered into certain leases that have not yet commenced. Such leases include a 15 -year lease for plant equipment, with estimated future lease payments of $6.8 million , expected to commence in the second quarter of 2020, and a 5 -year lease for office equipment, with estimated future lease payments of $0.4 million , expected to commence in the first quarter of 2020. Our consolidated income statement reflects lease revenue recognized by HEP for contracts with third parties in which HEP is the lessor. Lease income recognized for the year ended December 31, 2019 was $33.2 million for operating leases. Annual minimum undiscounted lease payments in which HEP is a lessor to third-party contracts as of December 31, 2019 were as follows: (In thousands) 2020 $ 18,839 2021 12,794 2022 11,377 2023 11,248 2024 11,248 Thereafter 2,812 Total $ 68,318 The following are disclosures related to periods prior to our adoption of ASC 842. We leased certain office and storage facilities, rail cars and other equipment under long-term operating leases, most of which contained renewal options. At December 31, 2018, the minimum future rental commitments under operating leases having non-cancellable lease terms in excess of one year were as follows: (In thousands) 2019 $ 104,362 2020 92,491 2021 84,581 2022 70,874 2023 61,063 Thereafter 88,206 Total $ 501,577 Rental expense charged to operations was $84.1 million and $95.7 million for the years ended December 31, 2018 and 2017 , respectively.
Lessee, Finance Leases	Leases We have operating and finance leases for land, buildings, pipelines, storage tanks, transportation and other equipment for our operations. Our leases have remaining terms of one to 60 years , some of which include options to extend the leases for up to 10 years . Certain of our leases for pipeline assets include provisions for variable payments which are based on a measure of throughput and also contain a provision for the lessor to adjust the rate per barrel periodically over the life of the lease. These variable costs are not included in the initial measurement of ROU assets and lease liabilities. The following table presents the amounts and balance sheet locations of our operating and financing leases recorded on our consolidated balance sheet. December 31, 2019 (In thousands) Operating leases: Operating lease right-of-use assets $ 467,109 Operating lease liabilities 104,415 Noncurrent operating lease liabilities 364,420 Total operating lease liabilities $ 468,835 Finance leases: Properties, plants and equipment, at cost $ 13,406 Accumulated amortization (6,233 ) Properties, plants and equipment, net $ 7,173 Accrued liabilities $ 1,567 Other long-term liabilities 5,163 Total finance lease liabilities $ 6,730 Supplemental balance sheet information related to our leases was as follows: December 31, 2019 Weighted average remaining lease term (in years) Operating leases 7.2 Finance leases 8.1 Weighted average discount rate Operating leases 4.0 % Finance leases 5.2 % The components of lease expense were as follows: Year Ended (In thousands) Operating lease expense $ 112,770 Finance lease expense: Amortization of right-of-use assets 1,543 Interest on lease liabilities 334 Variable lease cost 4,449 Total lease expense $ 119,096 Supplemental cash flow information related to leases was as follows: Year Ended (In thousands) Cash paid for amounts included in the measurement of lease liabilities: Operating cash flows from operating leases $ 116,980 Operating cash flows from finance leases $ 334 Financing cash flows from finance leases $ 1,551 Right-of-use assets obtained in exchange for lease obligations: Operating leases $ 121,750 As of December 31, 2019 , minimum future lease payments of our operating and finance lease obligations were as follows: Operating Finance (In thousands) 2020 $ 121,511 $ 2,128 2021 102,480 1,304 2022 87,344 1,056 2023 72,751 1,110 2024 49,901 626 2025 and thereafter 124,612 2,255 Future minimum lease payments 558,599 8,479 Less: imputed interest 89,764 1,749 Total lease obligations 468,835 6,730 Less: current obligations 104,415 1,567 Long-term lease obligations $ 364,420 $ 5,163 As of December 31, 2019 , we have entered into certain leases that have not yet commenced. Such leases include a 15 -year lease for plant equipment, with estimated future lease payments of $6.8 million , expected to commence in the second quarter of 2020, and a 5 -year lease for office equipment, with estimated future lease payments of $0.4 million , expected to commence in the first quarter of 2020. Our consolidated income statement reflects lease revenue recognized by HEP for contracts with third parties in which HEP is the lessor. Lease income recognized for the year ended December 31, 2019 was $33.2 million for operating leases. Annual minimum undiscounted lease payments in which HEP is a lessor to third-party contracts as of December 31, 2019 were as follows: (In thousands) 2020 $ 18,839 2021 12,794 2022 11,377 2023 11,248 2024 11,248 Thereafter 2,812 Total $ 68,318 The following are disclosures related to periods prior to our adoption of ASC 842. We leased certain office and storage facilities, rail cars and other equipment under long-term operating leases, most of which contained renewal options. At December 31, 2018, the minimum future rental commitments under operating leases having non-cancellable lease terms in excess of one year were as follows: (In thousands) 2019 $ 104,362 2020 92,491 2021 84,581 2022 70,874 2023 61,063 Thereafter 88,206 Total $ 501,577 Rental expense charged to operations was $84.1 million and $95.7 million for the years ended December 31, 2018 and 2017 , respectively.

Holly Energy Partners

Holly Energy Partners	12 Months Ended
	Dec. 31, 2019
Equity Method Investments and Joint Ventures [Abstract]
Holly Energy Partners	Holly Energy Partners HEP 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 Delek US Holdings, Inc's (“Delek”) refinery in Big Spring, Texas. Additionally, as of December 31, 2019 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% ownership interest in each of Osage Pipeline Company, LLC, the owner of a pipeline running from Cushing, Oklahoma to El Dorado, Kansas (the “Osage Pipeline”); Cheyenne Pipeline, LLC, the owner of a pipeline running from Fort Laramie, Wyoming to Cheyenne, Wyoming (the “Cheyenne Pipeline”) and Cushing Connect Pipeline & Terminal LLC (“Cushing Connect”), the owner of a crude oil storage terminal in Cushing, Oklahoma and a to-be-constructed pipeline that will run from Cushing, Oklahoma to our Tulsa Refineries. At December 31, 2019 , we owned a 57% limited partner interest and a non-economic general partner interest in HEP. 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 as HEP's primary beneficiary, we consolidate HEP. HEP has two primary customers (including us) and generates revenues by charging tariffs for transporting petroleum products and crude oil though its pipelines, by charging fees for terminalling refined products and other hydrocarbons, and by 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 77% of HEP’s total revenues for the year ended December 31, 2019 . 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. HEP’s creditors have no recourse to our assets. Furthermore, our creditors have no recourse to the assets of HEP and its consolidated subsidiaries. See Note 13 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. Cushing Connect Joint Venture On October 2, 2019, HEP Cushing LLC, a wholly-owned subsidiary of HEP, and Plains Marketing, L.P., a wholly-owned subsidiary of Plains, formed a 50/50 joint venture, Cushing Connect, for (i) the development and construction of a new 160,000 barrel per day common carrier crude oil pipeline (the “Cushing Connect Pipeline”) that will connect the Cushing, Oklahoma crude oil hub to our Tulsa Refineries and (ii) the ownership and operation of 1.5 million barrels of crude oil storage in Cushing, Oklahoma (the “Cushing Connect Terminal”). The Cushing Connect Terminal is expected to be placed in service during the second quarter of 2020, and the Cushing Connect Pipeline is expected to be placed in service during the first quarter of 2021. Long-term commercial agreements have been entered into to support the Cushing Connect assets. Cushing Connect will contract with an affiliate of HEP to manage the construction and operation of the Cushing Connect Pipeline and with an affiliate of Plains to manage the operation of the Cushing Connect Terminal. The total investment in Cushing Connect will be shared proportionately among the partners, and HEP estimates its share of the cost of the Cushing Connect Terminal contributed by Plains and Cushing Connect Pipeline construction costs are approximately $65.0 million . SLC Pipeline and Frontier Pipeline On October 31, 2017, HEP acquired the remaining 75% interest in SLC Pipeline LLC, the owner of a pipeline that serves refineries in the Salt Lake City, Utah area (the “SLC Pipeline”), and the remaining 50% interest in Frontier Aspen LLC, the owner of a pipeline running from Wyoming to Frontier Station, Utah (the “Frontier Pipeline”), from subsidiaries of Plains for cash consideration of $250.0 million . These acquisitions were accounted for as a business combination achieved in stages. HEP’s preexisting equity method investments in SLC Pipeline LLC and Frontier Aspen LLC were remeasured at an acquisition date fair value of $112.0 million , since HEP acquired a controlling interest, and a gain was recognized on the remeasurement of $36.3 million in the fourth quarter of 2017. The fair value of HEP's preexisting equity method investments in SLC Pipeline LLC and Frontier Aspen LLC was estimated using Level 3 inputs under the income method for these entities, adjusted for lack of control and marketability. The total consideration of $363.8 million , consisting of cash consideration of $250.0 million and the fair value of HEP's preexisting equity method investments in SLC Pipeline LLC and Frontier Aspen LLC of $112.0 million , and working capital adjustments of $1.8 million , was allocated to the acquisition date fair value of assets and liabilities acquired as of the October 31, 2017 acquisition date, with the excess purchase price recorded as goodwill. Fair values were as follows: cash and cash equivalents $4.6 million , current assets $5.2 million , properties and equipment $275.0 million , intangible assets $70.2 million , goodwill $13.8 million and current liabilities $5.0 million . Transportation Agreements HEP serves our refineries under long-term pipeline, terminal and tankage throughput agreements and refinery processing tolling agreements expiring from 2021 through 2036. Under these agreements, we pay HEP fees to transport, store and process throughput volumes of refined products, crude oil and feedstocks on HEP's pipelines, 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 December 31, 2019 , these agreements result in minimum annualized payments to HEP of $348.1 million . Our transactions with HEP and fees paid under our transportation agreements with HEP and UNEV are eliminated and have no impact on our consolidated financial statements. Incentive Distribution Rights Simplification Agreement On October 31, 2017, we closed on an equity restructuring transaction with HEP pursuant to which our incentive distribution rights were canceled and our 2% general partner interest in HEP was converted into a non-economic general partner interest in HEP. In consideration, we received 37,250,000 HEP common units. In addition, we agreed to waive $2.5 million of limited partner cash distributions for each of twelve consecutive quarters beginning with the first quarter the units issued were eligible to receive distributions as consideration. HEP Private Placement Agreements On January 25, 2018, HEP entered into a common unit purchase agreement in which certain purchasers agreed to purchase in a private placement 3,700,000 HEP common units, representing limited partner interests, at a price of $29.73 per common unit. The private placement closed on February 6, 2018, at which time HEP received proceeds of $110.0 million , which were used to repay indebtedness under the HEP Credit Agreement. HEP Common Unit Continuous Offering Program In May 2016, HEP established a continuous offering program under which HEP may issue and sell common units from time to time, representing limited partner interests, up to an aggregate gross sales amount of $200 million . During the year ended December 31, 2019 , HEP did not issue any common units under this program. As of December 31, 2019 , HEP has issued 2,413,153 common units under this program, providing $82.3 million in gross proceeds. As a result of these transactions and resulting HEP ownership changes, we adjusted additional capital and equity attributable to HEP's noncontrolling interest holders to reallocate HEP's equity among its unitholders.

Revenues from Contracts with Cu

Revenues from Contracts with Customers (Notes)	12 Months Ended
	Dec. 31, 2019
Revenue from Contract with Customer [Abstract]
Revenues	Revenues Substantially all revenue-generating activities relate to sales of refined product and excess crude oil inventories sold at market prices (variable consideration) under contracts with customers. Additionally, we have revenues attributable to HEP logistics services provided under petroleum product and crude oil pipeline transportation, processing, storage and terminalling agreements with third parties. Disaggregated revenues are as follows: Years Ended December 31, 2019 2018 2017 (In thousands) Revenues by type Refined product revenues Transportation fuels (1) $ 12,952,899 $ 13,326,654 $ 11,056,038 Specialty lubricant products (2) 1,864,450 1,636,859 1,415,842 Asphalt, fuel oil and other products (3) 1,025,663 985,234 743,394 Total refined product revenues 15,843,012 15,948,747 13,215,274 Excess crude oil revenues (4) 1,470,148 1,597,321 891,756 Transportation and logistic services 121,027 108,412 77,225 Other revenues (5) 52,391 60,186 67,044 Total sales and other revenues $ 17,486,578 $ 17,714,666 $ 14,251,299 Years Ended December 31, 2019 2018 2017 (In thousands) Refined product revenues by market United States Mid-Continent $ 8,424,191 $ 8,427,200 $ 7,099,754 Southwest 3,621,273 3,772,278 2,952,224 Rocky Mountains 2,208,541 2,476,044 2,055,221 Northeast 578,932 339,407 259,840 Canada 721,169 732,321 673,842 Europe, Asia and Latin America 288,906 201,497 174,393 Total refined product revenues $ 15,843,012 $ 15,948,747 $ 13,215,274 (1) Transportation fuels consist of gasoline, diesel and jet fuel. (2) Specialty lubricant products consist of base oil, waxes, finished lubricants and other specialty fluids. (3) Asphalt, fuel oil and other products revenue include revenues attributable to our Refining and Lubricants and Specialty Products segments of $808.9 million and $216.8 million , respectively, for the year ended December 31, 2019 , $822.6 million and $162.6 million , respectively, for the year ended December 31, 2018 , and $565.2 million and $178.2 million , respectively, for the year ended December 31, 2017 . (4) Excess crude oil revenues represent sales of purchased crude oil inventory that at times exceeds the supply needs of our refineries. (5) Other revenues are principally attributable to our Refining segment. Our consolidated balance sheet reflects contract liabilities related to unearned revenues attributable to future service obligations under HEP’s third-party transportation agreements and production agreements from the acquisition of Sonneborn on February 1, 2019. The following table presents changes to contract liabilities for the years ended December 31, 2019 and 2018 : Years Ended December 31, 2019 2018 (In thousands) Balance at January 1 $ 132 $ 179 Sonneborn acquisition 6,463 — Increase 26,751 6,748 Recognized as revenue (28,694 ) (6,795 ) Balance at December 31 $ 4,652 $ 132 As of December 31, 2019 , we have long-term contracts with customers that specify minimum volumes of gasoline, diesel, lubricants and specialty products to be sold ratably at market prices through 2024. Such volumes are typically nominated in the month preceding delivery and delivered ratably throughout the following month. Future prices are subject to market fluctuations and therefore, we have elected the exemption to exclude variable consideration under these contracts under Accounting Standards Codification 606-10-50-14A. Aggregate minimum volumes expected to be sold (future performance obligations) under our long-term product sales contracts with customers are as follows: 2020 2021 2022 Thereafter Total (In thousands) Refined product sales volumes (barrels) 21,051 14,622 12,775 24,465 72,913 Additionally, HEP has long-term contracts with third-party customers that specify minimum volumes of product to be transported through its pipelines and terminals that result in fixed-minimum annual of revenues through 2025. Annual minimum revenues attributable to HEP’s third-party contracts as of December 31, 2019 are presented below: 2020 2021 2022 Thereafter Total (In thousands) HEP contractual minimum revenues $ 29,536 $ 22,822 $ 13,267 $ 25,308 $ 90,933 We have no customers which had accounted for over 10% of our annual revenues for the years ended December 31, 2019 , 2018 or 2017 .

Fair Value Measurements

Fair Value Measurements	12 Months Ended
	Dec. 31, 2019
Financial Instruments, Owned, at Fair Value [Abstract]
Fair Value Measurements	Fair Value Measurements Our financial instruments measured at fair value on a recurring basis consist of derivative instruments and RINs credit obligations. 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 of derivative instruments and RINs credit obligations at December 31, 2019 and 2018 were as follows: Carrying Amount Fair Value by Input Level Financial Instrument Level 1 Level 2 Level 3 (In thousands) December 31, 2019 Assets: Commodity price swaps $ 13,455 $ — $ 13,455 $ — Commodity forward contracts 4,133 — 4,133 — Total assets $ 17,588 $ — $ 17,588 $ — Liabilities: NYMEX futures contracts $ 2,578 $ 2,578 $ — $ — Foreign currency forward contracts 6,722 — 6,722 — Commodity price swaps 1,230 — 1,230 — Commodity forward contracts 3,685 — 3,685 — Total liabilities $ 14,215 $ 2,578 $ 11,637 $ — Carrying Amount Fair Value by Input Level Financial Instrument Level 1 Level 2 Level 3 (In thousands) December 31, 2018 Assets: NYMEX futures contracts $ 2,473 $ 2,473 $ — $ — Foreign currency forward contracts 25,956 — 25,956 — Commodity price swaps 10,817 — 10,817 — Commodity forward contracts 1,034 — 1,034 — Total assets $ 40,280 $ 2,473 $ 37,807 $ — Liabilities: Commodity price swaps $ 956 $ — $ 956 $ — Commodity forward contracts 1,137 — 1,137 — RINs credit obligations (1) 4,084 — 4,084 — Total liabilities $ 6,177 $ — $ 6,177 $ — (1) Represent obligations for RINs credits for which we did not have sufficient quantities at December 31, 2018 to satisfy our Environmental Protection Agency (“EPA”) regulatory blending requirements. Level 1 Financial Instruments Our NYMEX futures contracts are exchange traded and are measured and recorded at fair value using quoted market prices, a Level 1 input. Level 2 Financial Instruments

Earnings Per Share

Earnings Per Share	12 Months Ended
	Dec. 31, 2019
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: Years Ended December 31, 2019 2018 2017 (In thousands, except per share data) Net income attributable to HollyFrontier stockholders $ 772,388 $ 1,097,960 $ 805,395 Participating securities’ (restricted stock) share in earnings 1,034 3,714 5,047 Net income attributable to common shares $ 771,354 $ 1,094,246 $ 800,348 Average number of shares of common stock outstanding 166,287 175,009 176,174 Effect of dilutive variable restricted shares and performance share units (1) 1,098 1,652 1,022 Average number of shares of common stock outstanding assuming dilution 167,385 176,661 177,196 Basic earnings per share $ 4.64 $ 6.25 $ 4.54 Diluted earnings per share $ 4.61 $ 6.19 $ 4.52 (1) Excludes anti-dilutive restricted and performance share units of: 302 238 543

Stock-Based Compensation

Stock-Based Compensation	12 Months Ended
	Dec. 31, 2019
Share-based Payment Arrangement, Noncash Expense [Abstract]
Stock-Based Compensation	Stock-Based Compensation We have a principal share-based compensation plan (the “Long-Term Incentive Compensation Plan”). The compensation cost charged against income for the plan was $41.5 million , $39.0 million and $39.8 million for the years ended December 31, 2019 , 2018 and 2017 , 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 $2.5 million , $3.2 million and $2.5 million for the years ended December 31, 2019 , 2018 and 2017 , respectively. Restricted Stock and Restricted Stock Units Under our Long-Term Incentive Compensation Plan, we grant certain officers and other key employees restricted stock unit awards, which are payable in stock or cash and generally vest over a period of three years . We previously granted restricted stock to certain officers and key employees with awards vesting over a period of three years. Certain restricted stock unit award recipients have the right to receive dividends, however, restricted stock units do not have any other rights of absolute ownership. 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 stock and restricted stock units lapse at which time they convert to common shares or cash. 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. We account for forfeitures on an estimated basis. A summary of restricted stock and restricted stock unit activity during the year ended December 31, 2019 is presented below: Restricted Stock and Restricted Stock Units Grants Weighted Average Grant Date Fair Value Aggregate Intrinsic Value ($000) Outstanding at January 1, 2019 1,196,914 $ 46.81 Granted 661,329 $ 52.62 Vested (739,613 ) $ 41.74 Forfeited (60,234 ) $ 46.30 Converted from performance share units 43,385 $ 35.80 Outstanding at December 31, 2019 1,101,781 $ 53.30 $ 55,871 For the years ended December 31, 2019 , 2018 and 2017 , restricted stock and restricted stock units vested having a grant date fair value of $30.9 million , $30.0 million and $24.9 million , respectively. For the years ended December 31, 2018 and 2017 , we granted restricted stock units having a weighted average grant date fair value of $64.96 and $35.02 , respectively. As of December 31, 2019 , there was $36.2 million of total unrecognized compensation cost related to non-vested restricted stock unit grants. That cost is expected to be recognized over a weighted-average period of 1.5 years. For the years ended December 31, 2019 and 2018 , we paid $1.7 million and $0.1 million , respectively, in cash equal to the value of the stock award on the vest date, to certain employees to settle 32,648 and 2,481 , respectively, restricted stock units. No restricted stock units were settled in cash in 2017. 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 or cash 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 or cash paid under these awards can range from zero to 200% of target award amounts. A summary of performance share unit activity and changes during the year ended December 31, 2019 is presented below: Performance Share Units Grants Outstanding at January 1, 2019 662,431 Granted 177,428 Vested (427,715 ) Forfeited (11,046 ) Converted to restricted stock units (25,510 ) Outstanding at December 31, 2019 375,588 For the year ended December 31, 2019 , we issued 592,602 shares of common stock, representing a 200% payout on vested performance share units having a grant date fair value of $7.3 million . For the years ended December 31, 2018 and 2017 , we issued common stock upon the vesting of the performance share units having a grant date fair value of $8.8 million and $6.6 million , respectively. As of December 31, 2019 , there was $11.7 million of total unrecognized compensation cost related to non-vested performance share units having a grant date fair value of $58.50 per unit. That cost is expected to be recognized over a weighted-average period of 2.1 years. In addition, for the year ended December 31, 2019 , 131,414 shares of common stock, representing target payout on performance share units having a grant date fair value of $8.9 million , vested and will be settled in 2020.

Inventories

Inventories	12 Months Ended
	Dec. 31, 2019
Inventory, Net [Abstract]
Inventories	Inventories Inventory consists of the following components: December 31, 2019 2018 (In thousands) Crude oil $ 489,169 $ 503,705 Other raw materials and unfinished products (1) 394,045 360,124 Finished products (2) 639,938 662,713 Lower of cost or market reserve (240,363 ) (360,138 ) Process chemicals (3) 36,786 31,413 Repairs and maintenance supplies and other (4) 154,627 156,562 Total inventory $ 1,474,202 $ 1,354,379 (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. (4) Includes RINs Our inventories that are valued at the lower of LIFO cost or market reflect a valuation reserve of $240.4 million and $360.1 million at December 31, 2019 and 2018 , respectively. The December 31, 2018 market reserve of $360.1 million was reversed due to the sale of inventory quantities that gave rise to the 2018 reserve. A new market reserve of $240.4 million was established as of December 31, 2019 based on market conditions and prices at that time. The effect of the change in the lower of cost or market reserve was a decrease to cost of products sold totaling $119.8 million for the year ended December 31, 2019 , an increase of $136.3 million for the year ended December 31, 2018 and a decrease of $108.7 million for the year ended December 31, 2017 . At December 31, 2019 , 2018 and 2017 , the LIFO value of inventory, net of the lower of cost or market reserve, was equal to current costs. During the three months ended September 30, 2019, the EPA granted the Cheyenne Refinery and the Woods Cross Refinery each a one-year small refinery exemption from the Renewable Fuel Standard (“RFS”) program requirements for the 2018 calendar year end. As a result, the Cheyenne Refinery’s and the Woods Cross Refinery’s gasoline and diesel production are not subject to the Renewable Volume Obligation (“RVO”) for 2018. In the third quarter of 2019, we increased our inventory of RINs and reduced our cost of products sold by $36.6 million representing the net cost of the RINs charge to cost of products sold in 2018, less the loss incurred for selling 2018 vintage RINs in excess of those which we can use subject to the 20% carryover limit. During the three months ended June 30, 2018, the EPA granted the Woods Cross Refinery a one-year small refinery exemption from the RFS program requirements for the 2017 calendar year end. As a result, the Woods Cross Refinery’s gasoline and diesel production are not subject to the RVO for 2017. In the second quarter of 2018, we increased our inventory of RINs and reduced our cost of products sold by $25.3 million , representing the net cost of the Woods Cross Refinery’s RINs charge to cost of products sold in 2017, less the loss incurred for selling 2017 vintage RINs in excess of those which we can use subject to the 20% carryover limit. During the three months ended March 31, 2018, the EPA granted the Cheyenne Refinery a one-year small refinery exemption from the RFS program requirements for the 2015 and 2017 calendar years end. As a result, the Cheyenne Refinery’s gasoline and diesel production are not subject to the RVO for those years. At the date we received the 2017 Cheyenne Refinery exemption, we had not yet retired RINs to satisfy the 2017 RVO, which we intended to satisfy, in part, with 2016 vintage RINs subject to the 20% carryover limit. In the first quarter of 2018, we increased our inventory of RINs and reduced our cost of products sold by $37.9 million , representing the net cost of the Cheyenne Refinery’s RINs charged to cost of products sold in 2017, less the loss incurred from selling 2016 vintage RINs prior to their expiration in 2018. In the first quarter of 2018, the EPA provided us 2018 vintage RINs to replace the RINs previously retired to meet the Cheyenne Refinery’s 2015 RVO. In the first quarter of 2018, we increased our inventory of RINs and reduced our cost of products sold by $33.8 million representing the fair value of the 2018 replacement RINs obtained from the Cheyenne Refinery’s exemption of its 2015 RVO. In May 2017, the EPA granted the Cheyenne Refinery a one-year small refinery exemption from the RFS program requirements for the 2016 calendar year. As a result, the Cheyenne Refinery’s gasoline and diesel production are not subject to the RVO for 2016. In September 2017, the EPA reinstated the RINs previously retired to meet our Cheyenne Refinery’s 2016 RVO. The cost of the RINs used earlier to satisfy the Cheyenne Refinery’s 2016 RVO of $30.5 million was charged to cost of products sold in 2016. In the second quarter of 2017, we increased our inventory of RINs and reduced our cost of products sold by this amount, representing the cost of the RINs that were reinstated as a result of the RFS exemption received by the Cheyenne Refinery. Additionally, in December 2017, the EPA granted the Woods Cross Refinery a one-year small refinery exemption from the RFS program requirements for the 2016 calendar year. In the fourth quarter of 2017, we increased our inventory of RINs and reduced our cost of products sold in the amount of $27.3 million , representing the cost of the RINs reinstated as a result of the RFS exemption received by the Woods Cross Refinery. Various subsidiaries of HollyFrontier moved to intervene in four lawsuits brought by renewable fuel interest groups against the EPA in federal courts alleging violations of the Renewable Fuel Standard under the Clean Air Act and challenging the EPA’s handling of small refinery exemptions. We intervened to vigorously defend the EPA’s position on small refinery exemptions because we believe the EPA correctly applied applicable law to the matters at issue. The U.S. Court of Appeals for the DC Circuit dismissed one of these four lawsuits on November 12, 2019 for lack of jurisdiction. On January 24, 2020, the U.S. Court of Appeals for the 10th Circuit vacated the small refinery exemptions granted to two of our refineries for 2016 and remanded the case to the EPA for further proceedings. It is not clear at this time what steps the EPA will take with respect to our 2016 small refinery exemptions, and we are unable to estimate costs we may incur, if any, at this time. It is also not clear how the case will impact future small refinery exemptions. It is too early to assess whether the remaining two cases are expected to have any impact on us.

Properties, Plants and Equipmen

Properties, Plants and Equipment	12 Months Ended
	Dec. 31, 2019
Property, Plant and Equipment [Abstract]
Properties, Plants and Equipment	Properties, Plants and Equipment The components of properties, plants and equipment are as follows: December 31, 2019 2018 (In thousands) Land, buildings and improvements $ 447,547 $ 455,508 Refining facilities 4,258,764 4,034,546 Pipelines and terminals 1,775,657 1,729,994 Transportation vehicles 27,214 20,311 Other fixed assets 540,953 296,843 Construction in progress 187,162 243,778 7,237,297 6,780,980 Accumulated depreciation (2,414,585 ) (2,098,446 ) $ 4,822,712 $ 4,682,534 We capitalized interest attributable to construction projects of $2.5 million , $4.8 million and $5.0 million for the years ended December 31, 2019 , 2018 and 2017 , respectively. Depreciation expense was $334.2 million , $309.0 million and $286.5 million for the years ended December 31, 2019 , 2018 and 2017 , respectively.

Goodwill and Long-lived Asset I

Goodwill and Long-lived Asset Impairment	12 Months Ended
	Dec. 31, 2019
Goodwill [Abstract]
Goodwill and Long-lived Asset Impairment	Goodwill, Long-lived Assets and Intangibles Goodwill and long-lived assets As of December 31, 2019 , our goodwill balance was $2.4 billion . During 2019 , we recognized $282.3 million in goodwill as a result of our Sonneborn acquisition, all of which has been assigned to our Lubricants and Specialty Products segment. See Note 20 for additional information on our segments. The carrying amount of our goodwill may fluctuate from period to period due to the effects of foreign currency translation adjustments on goodwill assigned to our Lubricants and Specialty Products segment. The following is a summary of our goodwill by segment: Refining Lubricants and Specialty Products HEP Total (In thousands) Balance at December 31, 2018 Goodwill $ 2,042,790 $ 198,734 $ 314,229 $ 2,555,753 Accumulated impairment losses (309,318 ) — — (309,318 ) 1,733,472 198,734 314,229 2,246,435 Additional goodwill acquired — 282,273 — 282,273 Current year impairment losses — (152,712 ) — (152,712 ) Current year adjustments — — (1,356 ) (1,356 ) Foreign currency translation adjustment — (733 ) — (733 ) Balance at December 31, 2019 Goodwill 2,042,790 480,274 312,873 2,835,937 Accumulated impairment losses (309,318 ) (152,712 ) — (462,030 ) $ 1,733,472 $ 327,562 $ 312,873 $ 2,373,907 During the second quarter of 2019, we performed interim goodwill impairment testing of the PCLI reporting unit included in our Lubricants and Specialty Products segment. We elected to perform this interim assessment due to the recent reorganization of our reporting unit structure within the Lubricants and Specialty Products segment, combined with the identification of events and circumstances which were indicators of potential goodwill impairment at PCLI, including recent declines in gross margins to lower than historic levels. These recent lower gross margins are in the base oil market which is largely attributed to the increase in global supply of base oils with a current outlook for continued near-term softness. Our interim goodwill impairment testing was performed as of May 31, 2019. The estimated fair values of our goodwill reporting units within our Lubricants and Specialty Products segment were derived using a combination of both income and market approaches. The income approach reflects expected future cash flows based on estimated future production volumes, selling prices, gross margins, operating costs and capital expenditures. Our market approach includes both the guideline public company and guideline transaction methods. Both methods utilize pricing multiples derived from historical market transactions of other like-kind assets. These fair value measurements involve significant unobservable inputs (Level 3 inputs). See Note 6 for further discussion of Level 3 inputs. As a result of our impairment testing, we determined that the carrying value of the PCLI reporting unit’s goodwill within our Lubricants and Specialty Products segment was fully impaired and a goodwill impairment charge of $152.7 million was recorded. Our testing did not identify any other impairments. We performed our annual goodwill impairment testing as of July 1, 2019 and determined there was no additional impairment of goodwill attributable to our reporting units. There was no impairment of goodwill during the years ended December 31, 2018 and 2017. In 2017, we incurred long-lived asset impairment charges totaling $23.2 million , including $19.2 million of construction-in-progress that primarily related to engineering work for a planned expansion to add lubricants production capabilities at our Woods Cross Refinery as we concluded to no longer pursue for various reasons including our recent acquisition of PCLI. The remaining $4.0 million in charges relate to property, plant and equipment that we expensed in the form of accelerated depreciation in the income statement. There was no impairment of long-lived assets during the years ended December 31, 2019 and 2018. Intangibles The carrying amounts of our intangible assets presented in “Intangibles and other” in our consolidated balance sheet are as follows: December 31 Useful Life 2019 2018 (In thousands) Customer relationships 10 - 20 years $ 245,479 $ 91,941 Transportation agreements 30 years 59,933 59,933 Trademarks, patents and other 10 - 20 years 154,863 83,326 460,275 235,200 Accumulated amortization (86,768 ) (52,834 ) Total intangibles, net $ 373,507 $ 182,366 Amortization expense was $33.8 million , $16.6 million and $9.1 million for the years ended December 31, 2019 , 2018 and 2017 , respectively and expected to approximate $33.8 million for each of the next five years.

Environmental

Environmental	12 Months Ended
	Dec. 31, 2019
Environmental Expense and Liabilities [Abstract]
Environmental	Environmental We expensed $11.2 million , $14.8 million and $13.1 million for the years ended December 31, 2019 , 2018 and 2017 , respectively, for environmental remediation obligations. The accrued environmental liability reflected in our consolidated balance sheets was $117.7 million and $110.2 million at December 31, 2019 and 2018 , respectively, of which $95.6 million and $93.8 million , respectively, were classified as other long-term liabilities. These accruals include remediation and monitoring costs expected to be incurred over an extended period of time (up to 30 years for certain projects). The amount of our accrued liability included $4.9 million of environmental obligations assumed in connection with our February 1, 2019 Sonneborn acquisition. Estimated liabilities could increase in the future when the results of ongoing investigations become known, are considered probable and can be reasonably estimated.

Debt

Debt	12 Months Ended
	Dec. 31, 2019
Debt Disclosure [Abstract]
Debt	Debt HollyFrontier Credit Agreement We have a $1.35 billion senior unsecured revolving credit facility maturing in February 2022 (the “HollyFrontier Credit Agreement”). The HollyFrontier Credit Agreement may be used for revolving credit loans and letters of credit from time to time and is available to fund general corporate purposes. At December 31, 2019 , we were in compliance with all covenants, had no outstanding borrowings and had outstanding letters of credit totaling $4.9 million under the HollyFrontier Credit Agreement. Indebtedness under the HollyFrontier Credit Agreement bears interest, at our option at either a) an alternate base rate (as defined in the credit agreement) plus an applicable margin of (ranging from 0.125% - 1.000% ), b) LIBOR plus an applicable margin (ranging from 1.125% to 2.000% ), or c) Canadian Dealer Offered Rate plus an applicable margin (ranging from 1.125% to 2.000% ) for Canadian dollar denominated borrowings. HEP Credit Agreement HEP has a $1.4 billion senior secured revolving credit facility maturing in July 2022 (the “HEP Credit Agreement”) and is available to fund capital expenditures, investments, acquisitions, distribution payments, working capital and for general partnership purposes. It is also available to fund letters of credit up to a $50 million sub-limit and has a $300 million accordion. During the year ended December 31, 2019 , HEP received advances totaling $365.5 million and repaid $323.0 million under the HEP Credit Agreement. At December 31, 2019 , HEP was in compliance with all of its covenants, had outstanding borrowings of $965.5 million and no outstanding letters of credit under the HEP Credit Agreement. Indebtedness under the HEP Credit Agreement bears interest, at HEP's option, at either a reference rate announced by the administrative agent plus an applicable margin or at a rate equal to LIBOR plus an applicable margin. In each case, the applicable margin is based upon the ratio of HEP’s funded debt to earnings before interest, taxes, depreciation and amortization (as defined in the HEP Credit Agreement). The weighted average interest rates in effect on HEP’s Credit Agreement borrowings was 4.24% for both December 31, 2019 and 2018 . HEP’s obligations under the HEP Credit Agreement are collateralized by substantially all of HEP’s assets and are guaranteed by HEP's material 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 HFC's 5.875% senior notes ( $1 billion aggregate principal amount 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 Arrangements In December 2018, certain of our wholly-owned subsidiaries entered into financing arrangements whereby such subsidiaries sold a portion of their precious metals catalyst to a financial institution and then leased back the precious metals catalyst in exchange for total cash received of $32.5 million . The volume of the precious metals catalyst and the lease rate are fixed over the one-year term of each lease, and the lease payments are recorded as interest expense. The leases mature on February 1, 2021. Upon maturity, we must either satisfy the obligation at fair market value or refinance to extend the maturity. These financing arrangements are recorded at a Level 2 fair value totaling $40.0 million at December 31, 2019 and included in “Accrued liabilities” in our consolidated balance sheets. See Note 6 for additional information on Level 2 inputs. HEP Senior Notes In July 2016 and September 2017, HEP issued $400 million and $100 million , respectively, in aggregate principal amount of 6.0% HEP senior notes maturing in August 2024 in a private placement. HEP used the net proceeds to repay indebtedness under the HEP Credit Agreement. On February 4, 2020, HEP closed a private placement of $500 million in aggregate principal amount of 5.0% HEP senior unsecured notes maturing in February 2028. On February 5, 2020, HEP redeemed its existing $500 million 6.0% senior notes at a redemption cost of $522.5 million . HEP will record any early extinguishment losses associated with this redemption during the first quarter of 2020. HEP funded the $522.5 million redemption with proceeds from the issuance of its 5.0% senior notes and borrowing under the HEP Credit Agreement. HEP's 5.0% senior notes (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 either Moody’s or Standard & Poor’s and no default or event of default exists, HEP will not be subject to many of the foregoing covenants. Additionally, HEP has certain redemption rights under the HEP Senior Notes. In January 2017, HEP redeemed its $300 million aggregate principal amount of 6.5% senior notes maturing March 2020 at a redemption cost of $309.8 million , at which time HEP recognized a $12.2 million early extinguishment loss consisting of a $9.8 million debt redemption premium and unamortized discount and financing costs of $2.4 million . HEP funded the redemption with borrowings under the HEP Credit Agreement. Indebtedness under the HEP Senior Notes is guaranteed by HEP’s wholly-owned subsidiaries. HEP’s creditors have no recourse to our 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: December 31, 2019 2018 (In thousands) HollyFrontier 5.875% Senior Notes Principal $ 1,000,000 $ 1,000,000 Unamortized discount and debt issuance costs (6,391 ) (7,360 ) 993,609 992,640 HEP Credit Agreement 965,500 923,000 HEP 6% Senior Notes Principal 500,000 500,000 Unamortized discount and debt issuance costs (3,469 ) (4,100 ) 496,531 495,900 Total HEP long-term debt 1,462,031 1,418,900 Total long-term debt $ 2,455,640 $ 2,411,540 The fair values of the senior notes are as follows: December 31, 2019 2018 (In thousands) HollyFrontier senior notes $ 1,127,610 $ 1,019,160 HEP senior notes $ 522,045 $ 488,310 These fair values are based on a Level 2 input. See Note 6 for additional information on Level 2 inputs. Principal maturities of long-term debt as of December 31, 2019 are as follows: Years Ending December 31, (In thousands) 2020 $ — 2021 — 2022 965,500 2023 — 2024 500,000 Thereafter 1,000,000 Total $ 2,465,500

Derivative Instruments and Hedg

Derivative Instruments and Hedging Activities	12 Months Ended
	Dec. 31, 2019
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, sales prices of refined products and crude oil costs. Foreign Currency Risk Management We are exposed to market risk related to the volatility in foreign currency exchange rates. We periodically enter into derivative contracts in the form of foreign exchange forward and foreign exchange swap contracts to mitigate the exposure associated with fluctuations on intercompany notes with our foreign subsidiaries that are not denominated in the U.S. dollar. Accounting Hedges We have swap contracts serving as cash flow hedges against price risk on forecasted purchases of natural gas and to lock in basis spread differentials on forecasted purchases of crude oil. We also periodically have forward sales contracts that lock in the prices of future sales of crude oil and 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. The following table presents the pre-tax effect on other comprehensive income (“OCI”) and earnings due to fair value adjustments and maturities of hedging instruments under hedge accounting: Net Unrealized Gain (Loss) Recognized in OCI Gain (Loss) Reclassified into Earnings Derivatives Designated as Cash Flow Hedging Instruments Years Ended December 31, Income Statement Location Years Ended December 31, 2019 2018 2017 2019 2018 2017 (In thousands) Commodity contracts $ (5,349 ) $ 11,221 $ 14,538 Sales and other revenues $ (1,799 ) $ (5,093 ) $ 7,836 Cost of products sold 22,876 — (299 ) Operating expenses (1,364 ) (962 ) (19,244 ) Interest rate contracts (1) — — (91 ) Interest expense — — 179 Total $ (5,349 ) $ 11,221 $ 14,447 $ 19,713 $ (6,055 ) $ (11,528 ) (1) HEP used interest rate swap contracts to manage its exposure to interest rate risk, which matured in July 2017. Economic Hedges We have commodity contracts including contracts to lock in basis spread differentials on forecasted purchases of crude oil, swap contracts to lock in the crack spread of WTI and gasoline, NYMEX futures contracts to lock in prices on forecasted purchases and sales of inventory and forward purchase and sell contracts that serve as economic hedges (derivatives used for risk management, but not designated as accounting hedges). We also have forward currency contracts to fix the rate of foreign currency. In addition, our catalyst financing arrangements discussed in Note 13 could require repayment under certain conditions based on the future pricing of platinum, which is an embedded derivative. 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: Gain (Loss) Recognized in Earnings Derivatives Not Designated as Hedging Instruments Years Ended December 31, Income Statement Location 2019 2018 2017 (In thousands) Commodity contracts Cost of products sold $ (8,475 ) $ 16,655 $ (12,327 ) Operating expenses — — (6,697 ) Interest expense (6,427 ) (198 ) — Foreign currency contracts Gain on foreign currency transactions (17,430 ) 41,834 — Gain on foreign currency swap contracts (1) — — 24,545 Total $ (32,332 ) $ 58,291 $ 5,521 (1) Relates to Canadian currency swap contracts that settled on February 1, 2017 and effectively fixed the conversion rate on our PCLI purchase price. As of December 31, 2019 , we have the following notional contract volumes related to outstanding derivative instruments: Notional Contract Volumes by Year of Maturity Total Outstanding Notional 2020 2021 Unit of Measure Derivatives designated as hedging instruments: Natural gas price swaps - long 3,600,000 1,800,000 1,800,000 MMBTU Crude oil price swaps (basis spread) - long 4,758,000 4,758,000 — Barrels Derivatives not designated as hedging instruments: NYMEX futures (WTI) - short 1,365,000 1,365,000 — Barrels Crude oil price swaps (basis spread) - long 1,464,000 1,464,000 — Barrels Forward gasoline and diesel contracts - long 1,251,200 1,251,200 — Barrels Foreign currency forward contracts 434,340,348 434,340,348 — U. S. dollar Forward commodity contracts (platinum) 41,147 — 41,147 Troy ounces 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) December 31, 2019 Derivatives designated as cash flow hedging instruments: Commodity price swap contracts $ 7,526 $ (1,784 ) $ 5,742 $ 1,230 $ — $ 1,230 $ 7,526 $ (1,784 ) $ 5,742 $ 1,230 $ — $ 1,230 Derivatives not designated as cash flow hedging instruments: NYMEX futures contracts $ — $ — $ — $ 2,578 $ — $ 2,578 Commodity price swap contracts 7,713 — 7,713 — — — Commodity forward contracts 4,133 — 4,133 3,685 — 3,685 Foreign currency forward contracts — — — 6,722 — 6,722 $ 11,846 $ — $ 11,846 $ 12,985 $ — $ 12,985 Total net balance $ 17,588 $ 14,215 Balance sheet classification: Prepayment and other $ 17,588 Accrued liabilities $ 12,985 — Other long-term liabilities 1,230 $ 17,588 $ 14,215 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, 2018 Derivatives designated as cash flow hedging instruments: Commodity price swap contracts $ 11,790 $ (973 ) $ 10,817 $ 1,755 $ (799 ) $ 956 $ 11,790 $ (973 ) $ 10,817 $ 1,755 $ (799 ) $ 956 Derivatives not designated as cash flow hedging instruments: NYMEX futures contracts $ 2,473 $ — $ 2,473 $ — $ — $ — Commodity forward contracts 1,034 — 1,034 1,137 — 1,137 Foreign currency forward contracts 25,956 — 25,956 — — — $ 29,463 $ — $ 29,463 $ 1,137 $ — $ 1,137 Total net balance $ 40,280 $ 2,093 Prepayments and other $ 37,982 Accrued liabilities $ 1,137 Intangibles and other 2,298 Other long-term liabilities 956 Balance sheet classification: $ 40,280 $ 2,093 At December 31, 2019 , we had a pre-tax net unrealized gain of $4.5 million classified in accumulated other comprehensive income that relates to all accounting hedges having contractual maturities through 2021. Assuming commodity prices remain unchanged, an unrealized gain of $5.7 million will be effectively transferred from accumulated other comprehensive income into the statement of income as the hedging instruments contractually mature over the next twelve-month period.

Income Taxes

Income Taxes	12 Months Ended
	Dec. 31, 2019
Income Tax Disclosure [Abstract]
Income Taxes	Income Taxes The provision for income taxes is comprised of the following: Years Ended December 31, 2019 2018 2017 (In thousands) Current Federal $ 187,134 $ 239,566 $ 102,786 State 29,547 40,788 2,760 Foreign 3,805 (10,080 ) 19,597 Deferred Federal 77,916 46,434 (156,767 ) State 26,073 27,845 28,527 Foreign (25,323 ) 2,690 (9,282 ) $ 299,152 $ 347,243 $ (12,379 ) The statutory federal income tax rate applied to pre-tax book income reconciles to income tax expense (benefit) as follows: Years Ended December 31, 2019 2018 2017 (In thousands) Tax computed at statutory rate $ 246,013 $ 320,138 $ 304,102 Effect of the Tax Cuts and Jobs Act — (7,800 ) (307,101 ) State income taxes, net of federal tax benefit 47,259 56,936 21,343 Domestic production activities deduction — — (9,937 ) Noncontrolling interest in net income (25,494 ) (20,215 ) (29,357 ) Effect of nondeductible goodwill impairment charge 32,069 — — Other (695 ) (1,816 ) 8,571 $ 299,152 $ 347,243 $ (12,379 ) Deferred income taxes reflect the net tax effects of temporary differences between the carrying amounts of assets and liabilities for financial reporting purposes and the amounts used for income tax purposes. Our deferred income tax assets and liabilities as of December 31, 2019 and 2018 are as follows: December 31, 2019 Assets Liabilities Total (In thousands) Deferred income taxes Properties, plants and equipment (due primarily to tax in excess of book depreciation) $ — $ (809,966 ) $ (809,966 ) Lease obligation 120,435 — 120,435 Accrued employee benefits 13,635 — 13,635 Accrued post-retirement benefits 11,027 — 11,027 Accrued environmental costs 28,708 — 28,708 Hedging instruments — (2,439 ) (2,439 ) Inventory differences — (43,500 ) (43,500 ) Deferred turnaround costs — (135,920 ) (135,920 ) Net operating loss and tax credit carryforwards 22,912 — 22,912 Investment in HEP — (95,037 ) (95,037 ) Valuation allowance — (4,600 ) (4,600 ) Other 5,475 — 5,475 Total $ 202,192 $ (1,091,462 ) $ (889,270 ) December 31, 2018 Assets Liabilities Total (In thousands) Deferred income taxes Properties, plants and equipment (due primarily to tax in excess of book depreciation) $ — $ (577,133 ) $ (577,133 ) Accrued employee benefits 15,395 — 15,395 Accrued post-retirement benefits 8,482 — 8,482 Accrued environmental costs 29,937 — 29,937 Hedging instruments — (4,099 ) (4,099 ) Inventory differences — (22,518 ) (22,518 ) Deferred turnaround costs — (87,360 ) (87,360 ) Net operating loss and tax credit carryforwards 13,702 — 13,702 Investment in HEP — (94,587 ) (94,587 ) Valuation allowance — (3,100 ) (3,100 ) Other — (1,295 ) (1,295 ) Total $ 67,516 $ (790,092 ) $ (722,576 ) We have Kansas income tax credits of $6.8 million that can be carried forward for 16 tax years. We have an $18.4 million net operating loss in Luxembourg that we do not anticipate utilizing. We have reflected a valuation allowance of $4.6 million in 2019 and $3.1 million in 2018 related to net operating carry forwards that we do not anticipate utilizing, primarily in Luxembourg. We also have a $30.9 million net operating loss in Canada that can be carried forward for 20 years. We expect to fully utilize this loss. Tax Cuts and Jobs Act The Tax Cuts and Jobs Act (the “Act”) was enacted on December 22, 2017. The Act reduced the U.S. federal corporate tax rate from 35% to 21%, required companies to pay a one-time transition tax on earnings of certain foreign subsidiaries that were previously deferred and created new taxes on certain foreign sourced earnings. At December 31, 2017, we had not completed our accounting for the tax effects of enactment of the Act; however, in certain cases, as described below, we made a reasonable estimate of the effects on our existing deferred tax balances, the one-time transition tax and related matters. For the items for which a reasonable estimate had been made, we recognized a provisional tax benefit amount of $307.1 million, which was included as a component of the income tax provision in 2017. For the year ended December 31, 2018, we completed the analysis of the accounting for the tax effects for which provisional adjustments were made during the fourth quarter of 2017, resulting in our recording during 2018 of an additional tax benefit of $7.8 million . These adjustments to the previously recorded provisional amounts included the effects on existing deferred tax balances, the one-time transition tax and deferred U.S. taxes on foreign subsidiaries earnings and profits. Deferred Tax Assets and Liabilities: For the year ended December 31, 2017, we remeasured certain deferred tax assets and liabilities based upon the rates at which they are expected to reverse in the future, which is generally 25%. Foreign Tax Effects: The one-time transition tax was based on our foreign subsidiaries’ earnings and profits (“E&P”) arising primarily from our acquisition of PCLI in 2017. This E&P was previously deferred from U.S. income taxes at 35% plus the effect of U.S. state income tax, or together generally 38%. We previously provided deferred U.S. taxes for the repatriation of these deferred amounts. At December 31, 2017, we recorded a provisional amount for our one-time transition tax liability of $6.5 million for our foreign subsidiaries at 15.5% plus the effect of state income tax, or together generally 20%, as we had not yet completed our calculation of the total foreign E&P for these foreign subsidiaries. In the course of preparing our U.S. federal income tax return during 2018, this amount changed slightly upon finalizing the calculation of foreign E&P previously deferred from U.S. federal taxation. Additional income taxes were provided for the remaining outside basis difference inherent in these entities at 21% plus the effect of U.S. state income tax, or together generally 25% as these amounts were not considered to be indefinitely reinvested in foreign operations for which we provided deferred taxes of $1.4 million . At December 31, 2018, our accounting for these provisional amounts related to foreign tax effects was completed. Our one-time transition tax calculation was finalized during 2018 and the resulting liability determined to be $6.6 million . A reconciliation of the beginning and ending amount of unrecognized tax benefits is as follows: Years Ended December 31, 2019 2018 2017 (In thousands) Balance at January 1 $ 53,752 $ 53,752 $ 22,137 Additions based on tax positions related to the current year — — 31,615 Additions for tax positions of prior years 2,893 — — Reductions for tax positions of prior years (24 ) — — Balance at December 31 $ 56,621 $ 53,752 $ 53,752 At December 31, 2019 , 2018 and 2017 , there were $56.6 million , $53.8 million , and $53.8 million , respectively, of unrecognized tax benefits that, if recognized, would affect our effective tax rate. Unrecognized tax benefits are adjusted in the period in which new information about a tax position becomes available or the final outcome differs from the amount recorded. The 2017 additions to unrecognized tax benefits relates to claims filed with the IRS on the federal income tax treatment of refundable biodiesel/ethanol blending tax credits for certain prior years. The issues related to the claims are complex and uncertain, and we cannot conclude that it is more likely than not that we will sustain the claims. Therefore, no tax benefit has been recognized for the filed claims. During the next 12 months, it is reasonably possible that an ultimate resolution regarding these claims could reduce unrecognized tax benefits (due to a court ruling in favor of the IRS). We recognize interest and penalties relating to liabilities for unrecognized tax benefits as an element of tax expense. We have not recorded any penalties related to our uncertain tax positions as we believe that it is more likely than not that there will not be any assessment of penalties. We are subject to U.S. and Canadian federal income tax, Oklahoma, Kansas, New Mexico, Iowa, Arizona, Utah, Colorado and Nebraska income tax and to income tax of multiple other state jurisdictions. We have substantially concluded all state and local income tax matters for tax years through 2014 . Other than the federal claim noted above, we have materially concluded all U.S. federal income tax matters for tax years through December 31, 2016

Stockholders' Equity

Stockholders' Equity	12 Months Ended
	Dec. 31, 2019
Stockholders' Equity Note [Abstract]
Stockholders' Equity	Stockholders' Equity Shares of our common stock outstanding and activity for the years ended December 31, 2019 , 2018 and 2017 are presented below: Years Ended December 31, 2019 2018 2017 Common shares outstanding at January 1 172,121,491 177,407,622 177,345,266 Issuance of restricted stock, excluding restricted stock with performance feature — — 55,626 Vesting of performance units 592,602 115,596 138,374 Vesting of restricted stock with performance feature 412,465 543,396 350,063 Forfeitures of restricted stock (13,807 ) (58,497 ) (139,634 ) Purchase of treasury stock (1) (11,266,226 ) (5,886,626 ) (342,073 ) Common shares outstanding at December 31 161,846,525 172,121,491 177,407,622 (1) Includes 415,466 , 369,255 and 342,073 shares, respectively, withheld under the terms of stock-based compensation agreements to provide funds for the payment of payroll and income taxes due at the vesting of share-based awards, as well as other stock repurchases under separate authority from our Board of Directors. In November 2019, our Board of Directors approved a $1.0 billion share repurchase program, which replaced all existing share repurchase programs, including $281.0 million remaining under the previously existing $1.0 billion share repurchase program. This program authorizes 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 December 31, 2019 , we had remaining authorization to repurchase up to $1.0 billion under this stock repurchase program. In addition, we are authorized by our Board of Directors to repurchase shares in an amount sufficient to offset shares issued under our compensation programs. During the years ended December 31, 2019 , 2018 and 2017 , we withheld shares of our common stock from certain employees in the amounts of $21.9 million , $19.6 million and $15.9 million , respectively. These withholdings were made under the terms of restricted stock and performance share unit agreements upon vesting, at which time, we concurrently made cash payments to fund payroll and income taxes on behalf of officers and employees who elected to have shares withheld from vested amounts to pay such taxes.

Other Comprehensive Income (Los

Other Comprehensive Income (Loss)	12 Months Ended
	Dec. 31, 2019
Other Comprehensive Income (Loss), before Tax [Abstract]
Other Comprehensive Income (Loss)	Other Comprehensive Income (Loss) The components and allocated tax effects of other comprehensive income are as follows: Before-Tax Tax Expense (Benefit) After-Tax (In thousands) Year Ended December 31, 2019 Net change in foreign currency translation adjustment $ 13,337 $ 2,848 $ 10,489 Net unrealized loss on hedging instruments (5,349 ) (1,365 ) (3,984 ) Net change in pension and other post-retirement benefit obligations (7,207 ) (1,853 ) (5,354 ) Other comprehensive income attributable to HollyFrontier stockholders $ 781 $ (370 ) $ 1,151 Year Ended December 31, 2018 Net change in foreign currency translation adjustment $ (38,227 ) $ (8,064 ) $ (30,163 ) Net unrealized gain on hedging instruments 11,221 2,857 8,364 Net change in pension and other post-retirement benefit obligations (1,507 ) (378 ) (1,129 ) Other comprehensive loss attributable to HollyFrontier stockholders $ (28,513 ) $ (5,585 ) $ (22,928 ) Year Ended December 31, 2017 Net change in foreign currency translation adjustment $ 22,151 $ 7,774 $ 14,377 Net unrealized loss on marketable securities $ (4 ) $ (1 ) $ (3 ) Net unrealized gain on hedging instruments 14,447 5,613 8,834 Net change in pension and other post-retirement benefit obligations (5,807 ) (2,037 ) (3,770 ) Other comprehensive income 30,787 11,349 19,438 Less other comprehensive loss attributable to noncontrolling interest (57 ) — (57 ) Other comprehensive income attributable to HollyFrontier stockholders $ 30,844 $ 11,349 $ 19,495 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 Years Ended December 31, 2019 2018 2017 (In thousands) Hedging instruments: Commodity price swaps $ (1,799 ) $ (5,093 ) $ 7,836 Sales and other revenues 22,876 — (299 ) Cost of products sold (1,364 ) (962 ) (19,244 ) Operating expenses Interest rate swaps — — 179 Interest expense 19,713 (6,055 ) (11,528 ) 5,027 (1,544 ) (4,490 ) Income tax benefit 14,686 (4,511 ) (7,038 ) Net of tax — — (74 ) Noncontrolling interest 14,686 (4,511 ) (7,112 ) Net of tax and noncontrolling interest Other post-retirement benefit obligations: Post-retirement healthcare obligations 3,587 3,481 3,481 Other, net 915 888 1,347 Income tax expense 2,672 2,593 2,134 Net of tax Retirement restoration plan (6 ) (27 ) (17 ) Other, net (2 ) (7 ) (7 ) Income tax benefit (4 ) (20 ) (10 ) Net of tax Total reclassifications for the period $ 17,354 $ (1,938 ) $ (4,988 ) Accumulated other comprehensive income in the equity section of our consolidated balance sheets includes: Years Ended December 31, 2019 2018 (In thousands) Foreign currency translation adjustment $ (2,187 ) $ (12,676 ) Unrealized loss on pension obligation (1,733 ) (1,404 ) Unrealized gain on post-retirement benefit obligations 15,333 20,358 Unrealized gain on hedging instruments 3,361 7,345 Accumulated other comprehensive income $ 14,774 $ 13,623

Post-retirement Plans

Post-retirement Plans	12 Months Ended
	Dec. 31, 2019
Pension and Other Postretirement Benefits Cost (Reversal of Cost) [Abstract]
Post-retirement Plans	Post-retirement Plans In connection with our PCLI acquisition, we established employee benefit plans including union and non-union pension plans and a post-retirement healthcare plan for PCLI employees that were previously covered under legacy Suncor plans and are closed to new entrants. In September 2018, Suncor made a cash transfer to these newly established plans in accordance with our agreement. Sonneborn employees in the Netherlands have a defined benefit pension plan which was frozen and all plan participants became inactive in 2016. The plan assets are in the form of a third-party insurance contract that is valued based on the assets held by the insurer and insures a value which approximates the accrued benefits related to the plan’s accumulated benefit obligation. At that time, a new plan was established to provide future indexation benefits to participants who had accrued benefits under the expiring arrangements. The following table sets forth the changes in the benefit obligation and plan assets of our PCLI pension plans for the years ended December 31, 2019 and 2018 , and for our Sonneborn Netherlands plans for the period February 1, 2019 to December 31, 2019: Years Ended December 31, 2019 2018 (In thousands) Change in plans' benefit obligations Pension plans benefit obligation - beginning of period $ 64,435 $ 63,582 Acquisition of Sonneborn 31,686 — Service cost 4,135 4,420 Interest cost 3,026 2,249 Actuarial loss 5,161 1,058 Benefits paid (1,132 ) (1,429 ) Transfer from other plans 330 — Foreign currency exchange rate changes 2,769 (5,445 ) Pension plans benefit obligation - end of year $ 110,410 $ 64,435 Change in pension plans assets Fair value of plans assets - beginning of period $ 62,462 $ 59,261 Acquisition of Sonneborn 29,376 — Actual return on plans assets 7,947 3,599 Employer contributions 3,681 6,239 Benefits paid (1,132 ) (1,429 ) Transfer payments 330 — Foreign currency exchange rate changes 2,694 (5,208 ) Fair value of plans assets - end of year $ 105,358 $ 62,462 Funded status Under-funded balance $ (5,052 ) $ (1,973 ) Amounts recognized in consolidated balance sheets Other long-term liabilities $ (5,052 ) $ (1,973 ) Amounts recognized in accumulated other comprehensive income Cumulative actuarial loss $ 3,155 $ 1,977 The accumulated benefit obligation was $100.5 million and $52.5 million at December 31, 2019 and 2018 , respectively, which are also the measurement dates used for our pension plans. The weighted average assumptions used to determine end of period benefit obligations for the PCLI plan for the years ended December 31, 2019 and 2018 were discount rates of 3.10% and 3.70% , respectively, and rates of future compensation increases of 3.00% for each year. For the year ended December 31, 2019, the weighted average assumption used to determine end of period benefit obligations for Sonneborn was a discount rate of 1.50% . Net periodic pension expense consisted of the following components: Years Ended December 31, 2019 2018 (In thousands) Service cost - benefit earned during the period $ 4,135 $ 4,420 Interest cost on projected benefit obligations 3,026 2,249 Expected return on plans assets (3,840 ) (3,464 ) Net periodic pension expense $ 3,321 $ 3,205 The components, other than service cost, of our net periodic pension expense are recorded in Other, net in our consolidated statements of income. At December 31, 2019 and 2018 , PCLI's pension plans assets were allocated as follows: Percentage of Plan Assets at Year End December 31, 2019 December 31, 2018 Asset Category Canadian equities 47 % — % Fixed income 29 % — % Real estate and infrastructure 14 % — % Other 9 % — % Cash 1 % 100 % Total 100 % 100 % The equity investments are valued using quoted market prices, a Level 1 input. Fixed income, real estate and infrastructure and other investments are valued using quoted market prices for similar type investments, a Level 2 input. See Note 6 for additional information on Level 1 and 2 inputs. The expected long-term rate of return on plan assets is 5.75% for the PCLI pension plan, and is based on a target investment mix of 46% Canadian equities, 30% fixed income, 14% real estate and infrastructure and 10% other. It is estimated that there will be no actuarial loss that will be amortized from accumulated other comprehensive income into net periodic benefit expense in 2020. We expect to contribute $3.6 million to the PCLI and Sonneborn pensions plans in 2020 . Benefit payments, which reflect expected future service, are expected to be paid as follows: $1.8 million in 2020 , $2.1 million in 2021 , $2.5 million in 2022 , $2.9 million in 2023 , $3.2 million in 2024 and $21.7 million in 2025 to 2029 . Post-retirement Healthcare Plans We have post-retirement healthcare and other benefits plans that are available to certain of our employees who satisfy certain age and service requirements. These plans are unfunded and provide differing levels of healthcare benefits dependent upon hire date and work location. Not all of our employees are covered by this plan at December 31, 2019 . The following table sets forth the changes in the benefit obligation and plan assets of our post-retirement healthcare plans for the years ended December 31, 2019 and 2018 : Years Ended December 31, 2019 2018 (In thousands) Change in plans' benefit obligation Post-retirement plans' benefit obligation - beginning of year $ 26,880 $ 29,499 Sonneborn acquisition 877 — Service cost 1,582 1,648 Interest cost 1,029 938 Participant contributions — 178 Benefits paid (2,028 ) (1,931 ) Actuarial loss (gain) 2,412 (2,643 ) Foreign currency exchange rate changes 521 (809 ) Post-retirement plans' benefit obligation - end of year $ 31,273 $ 26,880 Change in plan assets Fair value of plan assets - beginning of year $ — $ — Employer contributions 2,003 1,676 Participant contributions 25 255 Benefits paid (2,028 ) (1,931 ) Fair value of plan assets - end of year $ — $ — Funded status Under-funded balance $ (31,273 ) $ (26,880 ) Amounts recognized in consolidated balance sheets Accrued liabilities $ (1,817 ) $ (1,909 ) Other long-term liabilities (29,456 ) (24,971 ) $ (31,273 ) $ (26,880 ) Amounts recognized in accumulated other comprehensive income Cumulative actuarial (loss) gain $ (197 ) $ 2,379 Prior service credit 21,992 25,473 Total $ 21,795 $ 27,852 Benefit payments, which reflect expected future service, are expected to be paid as follows: $1.8 million in 2020 ; $1.8 million in 2021 ; $1.9 million in 2022 ; $1.9 million in 2023 ; $2.0 million in 2024 ; and $9.8 million in 2025 through 2029 . The weighted average assumptions used to determine end of period benefit obligations: December 31, 2019 2018 Discount rate 2.94% - 3.20% 3.70% - 3.95% Current health care trend rate 6.00% - 6.50% 6.50% Ultimate health care trend rate 4.50% - 5.00% 5.00% Year rate reaches ultimate trend rate 2022 - 2023 2022 - 2028 Net periodic post-retirement credit consisted of the following components: Years Ended December 31, 2019 2018 2017 (In thousands) Service cost – benefit earned during the year $ 1,582 $ 1,648 $ 1,511 Interest cost on projected benefit obligations 1,029 938 987 Amortization of prior service credit (3,481 ) (3,481 ) (3,481 ) Amortization of gain (106 ) — — Net periodic post-retirement credit $ (976 ) $ (895 ) $ (983 ) The components, other than service cost, of our net periodic post-retirement credit are recorded in Other, net in our consolidated statements of income. Prior service credits are amortized over the average remaining effective period to obtain full benefit eligibility for participants. The effect of a 1% change in health care cost trend rates is as follows: 1% Point Increase 1% Point Decrease (In thousands) Service and interest costs $ 502 $ (396 ) Year-end accumulated post-retirement benefit obligation $ 3,489 $ (2,990 ) Retirement Restoration Plan We have an unfunded retirement restoration plan that provides for additional payments from us so that total retirement plan benefits for certain executives will be maintained at the levels provided in the retirement plan before the application of Internal Revenue Code limitations. We expensed $0.1 million for each of the years ended December 31, 2019 , 2018 and 2017 in connection with this plan. The accrued liability reflected in the consolidated balance sheets was $2.4 million and $2.3 million at December 31, 2019 and 2018 , respectively. As of December 31, 2019 , the projected benefit obligation under this plan was $2.4 million . Annual benefit payments of $0.2 million are expected to be paid through 2029 , which reflect expected future service. Defined Contribution Plans We have defined contribution plans that cover substantially all qualified employees in the U.S, Canada and the Netherlands. Our contributions are based on an employee's eligible compensation and years of service. We also partially match our employees’ contributions. We expensed $30.3 million , $19.1 million and $17.6 million for the years ended December 31, 2019 , 2018 and 2017 , respectively, in connection with this plan

Contingencies And Contractual C

Contingencies And Contractual Commitments	12 Months Ended
	Dec. 31, 2019
Commitments and Contingencies Disclosure [Abstract]
Contingencies And Contractual Commitments	Contingencies and Contractual Commitments 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 materially adverse effect on our financial condition, results of operations or cash flows. We filed a business interruption claim with our insurance carriers related to a fire at our Woods Cross Refinery that occurred in the first quarter 2018. As of December 31, 2019 , we have collected interim payments totaling $56.0 million , but have not reached a final agreement regarding the amounts owed to us pursuant to our business interruption coverage. We have accounted for this claim as a gain contingency and accordingly, we have deferred revenue recognition for the interim payments received until such time that uncertainties regarding the amounts owed to us have been resolved. On January 24, 2020, the small refinery exemptions granted to two of our refineries for 2016 were vacated by the U.S. Court of Appeals for the 10th Circuit, and the case was remanded to the EPA for further proceedings. It is not clear at this time what steps the EPA will take, and we are unable to estimate costs we may incur, if any, at this time. See Note 9 for additional information. Contractual Commitments We have various long-term agreements (entered in the normal course of business) to purchase crude oil, natural gas, feedstocks and other resources to ensure we have adequate supplies to operate our refineries. The substantial majority of our purchase obligations are based on market prices or rates. These contracts expire in 2020 through 2025. We also have long-term agreements with third parties for the transportation and storage of crude oil, natural gas and feedstocks to our refineries and for terminal and storage services that expire in 2020 through 2039. At December 31, 2019 , the minimum future transportation and storage fees under transportation agreements having terms in excess of one year are as follows: (In thousands) 2020 $ 137,457 2021 116,058 2022 111,058 2023 112,399 2024 111,939 Thereafter 685,941 Total $ 1,274,852 Transportation and storage costs incurred under these agreements totaled $144.8 million , $143.3 million and $140.5 million for the years ended December 31, 2019 , 2018 and 2017 , respectively. These amounts do not include contractual commitments under our long-term transportation agreements with HEP, as all transactions with HEP are eliminated in these consolidated financial statements.

Segment Information

Segment Information	12 Months Ended
	Dec. 31, 2019
Segment Reporting [Abstract]
Segment Information	Segment Information Our operations are organized into three reportable segments: Refining, Lubricants and Specialty Products and HEP. Our operations that are not included in the Refining, Lubricants and Specialty Products and HEP segments are included in Corporate and Other. Intersegment transactions are eliminated in our consolidated financial statements and are included in Eliminations. Corporate and Other and Eliminations are aggregated and presented under the Corporate, Other and Eliminations column. 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. HFC Asphalt operates various asphalt terminals in Arizona, New Mexico and Oklahoma. The Lubricants and Specialty Products segment involves PCLI’s production operations, located in Mississauga, Ontario, that includes lubricant products such as base oils, white oils, specialty products and finished lubricants, and the operations of our Petro-Canada Lubricants business that includes the marketing of products to both retail and wholesale outlets through a global sales network with locations in Canada, the United States, Europe and China. Additionally, the Lubricants and Specialty Products segment includes specialty lubricant products produced at our Tulsa Refineries that are marketed throughout North America and are distributed in Central and South America. Also, effective with our acquisition that closed August 1, 2018, the Lubricants and Specialty Products segment includes Red Giant Oil, one of the largest suppliers of locomotive engine oil in North America, and effective with our acquisition that closed February 1, 2019, includes Sonneborn, a producer of specialty hydrocarbon chemicals such as white oils, petrolatums and waxes with manufacturing facilities in the United States and Europe. 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 refinery processing units in the Mid-Continent, Southwest and Rocky Mountain regions of the United States. As of December 31, 2019 , the HEP segment also includes a 75% ownership interest in UNEV (a consolidated subsidiary of HEP) and 50% ownership interest in each of the Osage Pipeline, the Cheyenne Pipeline and Cushing Connect. 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 (see Note 1). Refining Lubricants and Specialty Products HEP Corporate, Other and Eliminations Consolidated (In thousands) Year Ended December 31, 2019 Sales and other revenues: Revenues from external customers $ 15,284,110 $ 2,081,221 $ 121,027 $ 220 $ 17,486,578 Intersegment revenues 312,678 11,307 411,750 (735,735 ) — $ 15,596,788 $ 2,092,528 $ 532,777 $ (735,515 ) $ 17,486,578 Cost of products sold (exclusive of lower of cost or market inventory valuation adjustment) $ 12,980,506 $ 1,580,036 $ — $ (642,158 ) $ 13,918,384 Lower of cost or market inventory valuation adjustment $ (119,775 ) $ — $ — $ — $ (119,775 ) Operating expenses $ 1,095,488 $ 231,523 $ 161,996 $ (94,955 ) $ 1,394,052 Selling, general and administrative expenses $ 120,518 $ 168,595 $ 10,251 $ 54,872 $ 354,236 Depreciation and amortization $ 309,932 $ 88,781 $ 96,706 $ 14,506 $ 509,925 Goodwill impairment $ — $ 152,712 $ — $ — $ 152,712 Income (loss) from operations $ 1,210,119 $ (129,119 ) $ 263,824 $ (67,780 ) $ 1,277,044 Earnings of equity method investments $ — $ — $ 5,180 $ — $ 5,180 Capital expenditures $ 199,002 $ 40,997 $ 30,112 $ 23,652 $ 293,763 Total assets $ 7,189,094 $ 2,223,418 $ 2,205,437 $ 546,892 $ 12,164,841 Refining Lubricants and Specialty Products HEP Corporate, Other and Eliminations Consolidated (In thousands) Year Ended December 31, 2018 Sales and other revenues: Revenues from external customers $ 15,806,304 $ 1,799,506 $ 108,412 $ 444 $ 17,714,666 Intersegment revenues 370,259 13,197 397,808 (781,264 ) — $ 16,176,563 $ 1,812,703 $ 506,220 $ (780,820 ) $ 17,714,666 Cost of products sold (exclusive of lower of cost or market inventory valuation adjustment) $ 13,250,849 $ 1,381,540 $ — $ (691,607 ) $ 13,940,782 Lower of cost or market inventory valuation adjustment $ 136,305 $ — $ — $ — $ 136,305 Operating expenses $ 1,055,209 $ 167,820 $ 146,430 $ (83,621 ) $ 1,285,838 Selling, general and administrative expenses $ 113,641 $ 143,750 $ 11,041 $ 21,992 $ 290,424 Depreciation and amortization $ 284,439 $ 43,255 $ 98,492 $ 11,138 $ 437,324 Income (loss) from operations $ 1,336,120 $ 76,338 $ 250,257 $ (38,722 ) $ 1,623,993 Earnings of equity method investments $ — $ — $ 5,825 $ — $ 5,825 Capital expenditures $ 202,791 $ 37,448 $ 54,141 $ 16,649 $ 311,029 Total assets $ 6,465,155 $ 1,506,209 $ 2,142,027 $ 881,210 $ 10,994,601 Year Ended December 31, 2017 Sales and other revenues: Revenues from external customers $ 12,579,672 $ 1,594,036 $ 77,225 $ 366 $ 14,251,299 Intersegment revenues 338,390 — 377,137 (715,527 ) — $ 12,918,062 $ 1,594,036 $ 454,362 $ (715,161 ) $ 14,251,299 Cost of products sold (exclusive of lower of cost or market inventory valuation adjustment) $ 11,009,419 $ 1,093,984 $ — $ (635,530 ) $ 11,467,873 Lower of cost or market inventory valuation adjustment $ (107,479 ) $ (1,206 ) $ — $ — $ (108,685 ) Operating expenses $ 1,008,859 $ 222,461 $ 137,856 $ (72,507 ) $ 1,296,669 Selling, general and administrative expenses $ 103,246 $ 105,666 $ 14,336 $ 42,473 $ 265,721 Depreciation and amortization $ 289,434 $ 31,894 $ 77,660 $ 10,949 $ 409,937 Long-lived asset impairment $ 19,247 $ — $ — $ — $ 19,247 Income (loss) from operations $ 595,336 $ 141,237 $ 224,510 $ (60,546 ) $ 900,537 Earnings of equity method investments $ — $ — $ 12,510 $ — $ 12,510 Capital expenditures $ 176,533 $ 31,464 $ 44,810 $ 19,452 $ 272,259 Total assets $ 6,474,666 $ 1,610,472 $ 2,191,984 $ 415,032 $ 10,692,154

Quarterly Information (Unaudite

Quarterly Information (Unaudited)	12 Months Ended
	Dec. 31, 2019
Quarterly Financial Information Disclosure [Abstract]
Quarterly Information (Unaudited)	Quarterly Information (Unaudited) First Quarter Second Quarter Third Quarter Fourth Quarter Year (In thousands, except per share data) Year Ended December 31, 2019 Sales and other revenues $ 3,897,247 $ 4,782,615 $ 4,424,828 $ 4,381,888 $ 17,486,578 Operating costs and expenses $ 3,507,906 $ 4,450,874 $ 3,998,049 $ 4,252,705 $ 16,209,534 Income from operations (1) (2) $ 389,341 $ 331,741 $ 426,779 $ 129,183 $ 1,277,044 Income before income taxes $ 363,991 $ 306,153 $ 401,001 $ 100,359 $ 1,171,504 Net income attributable to HollyFrontier stockholders $ 253,055 $ 196,915 $ 261,813 $ 60,605 $ 772,388 Net income per share attributable to HollyFrontier stockholders - basic $ 1.48 $ 1.16 $ 1.60 $ 0.38 $ 4.64 Net income per share attributable to HollyFrontier stockholders - diluted $ 1.47 $ 1.15 $ 1.58 $ 0.37 $ 4.61 Dividends per common share $ 0.33 $ 0.33 $ 0.33 $ 0.35 $ 1.34 Average number of shares of common stock outstanding: Basic 170,851 169,356 163,676 161,398 166,287 Diluted 172,239 170,547 165,011 162,898 167,385 Year Ended December 31, 2018 Sales and other revenues $ 4,128,427 $ 4,471,236 $ 4,770,799 $ 4,344,204 $ 17,714,666 Operating costs and expenses $ 3,732,580 $ 3,964,259 $ 4,267,282 $ 4,126,552 $ 16,090,673 Income from operations (3) $ 395,847 $ 506,977 $ 503,517 $ 217,652 $ 1,623,993 Income before income taxes $ 373,899 $ 480,360 $ 478,390 $ 191,818 $ 1,524,467 Net income attributable to HollyFrontier stockholders $ 268,091 $ 345,507 $ 342,466 $ 141,896 $ 1,097,960 Net income per share attributable to HollyFrontier stockholders - basic $ 1.51 $ 1.96 $ 1.95 $ 0.82 $ 6.25 Net income per share attributable to HollyFrontier stockholders - diluted $ 1.50 $ 1.94 $ 1.93 $ 0.81 $ 6.19 Dividends per common share $ 0.33 $ 0.33 $ 0.33 $ 0.33 $ 1.32 Average number of shares of common stock outstanding: Basic 176,617 175,899 175,097 172,485 175,009 Diluted 177,954 177,586 176,927 174,259 176,661 (1) For 2019, income from operations reflects non-cash lower of cost or market inventory valuation reductions of $232.3 million for the first quarter, and charges of $47.8 million , $34.1 million and $30.7 million for the second, third and fourth quarters, respectively. (2) For 2019, income from operations reflects goodwill impairment charges of $152.7 million in the second quarter. (3) For 2018, income from operations reflects non-cash lower of cost or market inventory valuation reductions of $103.8 million and $106.9 million for the first and second quarters, respectively, and charges of $17.8 million and $329.2 million

Description of Business and S_2

Description of Business and Summary of Significant Accounting Policies (Policies)	12 Months Ended
	Dec. 31, 2019
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Description of Business	Description of Business: 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 Annual Report on Form 10-K 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 an independent petroleum refiner and marketer that produces high-value light products such as gasoline, diesel fuel, jet fuel and other specialty products. We own and operate petroleum refineries that serve markets throughout the Mid-Continent, Southwest and Rocky Mountain regions of the United States. In addition, we produce base oils and other specialized lubricants in the United States, Canada and the Netherlands, with retail and wholesale marketing of our products through a global sales network with locations in Canada, the United States, Europe, China and Latin America. As of December 31, 2019 , 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 Petro-Canada Lubricants Inc. (“PCLI”) located in Mississauga, Ontario, which produces base oils and other specialty lubricant products; • owned and operated Sonneborn with manufacturing facilities in Petrolia, Pennsylvania and the Netherlands, which produce specialty lubricant products, such as white oils, petrolatums and waxes; • owned and operated Red Giant Oil Company LLC (“Red Giant Oil”), which supplies locomotive engine oil and has storage and distribution facilities in Iowa, Kansas, Utah and Wyoming, along with a blending and packaging facility in Texas; • owned and operated HollyFrontier Asphalt Company LLC (“HFC Asphalt”), which operates various asphalt terminals in Arizona, New Mexico and Oklahoma; and • owned a 57% limited partner interest and a non-economic general partner interest in HEP, a variable interest entity (“VIE”). HEP 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. On November 12, 2018, we entered into an equity purchase agreement to acquire 100% of the issued and outstanding capital stock of Sonneborn US Holdings Inc. and 100% of the membership rights in Sonneborn Coöperatief U.A. (collectively, “Sonneborn”). The acquisition closed on February 1, 2019. On July 10, 2018, we entered into a definitive agreement to acquire Red Giant Oil, a privately-owned lubricants company. The acquisition closed on August 1, 2018. On October 29, 2016, we entered into a share purchase agreement with Suncor Energy Inc. (“Suncor”) to acquire 100% of the outstanding capital stock of PCLI. The acquisition closed on February 1, 2017. See Note 2 for additional information on these acquisitions.
Principles of Consolidation	Principles of Consolidation: Our consolidated financial statements include our accounts and the accounts of partnerships and joint ventures that we control through an ownership interest greater than 50% or through a controlling financial interest with respect to variable interest entities. All significant intercompany transactions and balances have been eliminated.
Variable Interest Entity	Variable Interest Entities: HEP is a VIE as defined under U.S. generally accepted accounting principles (“GAAP”). A VIE is a legal entity whose equity owners do not have sufficient equity at risk for the entity to finance its activities without additional subordinated financial support or, as a group, the equity holders lack the power, through voting rights, to direct the activities that most significantly impact the entity's financial performance, the obligation to absorb the entity's expected losses or rights to expected residual returns. As the general partner of HEP, we have the sole ability to direct the activities of HEP that most significantly impact HEP's financial performance, and therefore as HEP's primary beneficiary, we consolidate HEP. In 2019, HEP Cushing LLC, a wholly-owned subsidiary of HEP, and Plains Marketing, L.P., a wholly-owned subsidiary of Plains All American Pipeline, L.P. (“Plains”), formed a 50/50 joint venture, Cushing Connect Pipeline & Terminal LLC. Cushing Connect Pipeline & Terminal LLC and its two subsidiaries, Cushing Connect Pipeline and Cushing Connect Terminal are each VIE's because they do not have sufficient equity at risk to finance their activities without additional financial support. HEP is the primary beneficiary of two of these entities as HEP is constructing and will operate the Cushing Connect Pipeline, and HEP has more ability to direct the activities that most significantly impact the financial performance of Cushing Connect Pipeline & Terminal LLC and Cushing Connect Pipeline.Therefore, HEP consolidates these two entities. HEP is not the primary beneficiary of Cushing Connect Terminal, which HEP accounts for using the equity method of accounting.
Use of Estimates	Use of Estimates : The preparation of financial statements in accordance with GAAP requires management to make estimates and assumptions that affect the amounts reported in the financial statements and accompanying notes. Actual results could differ from those estimates.
Cash Equivalents	Cash Equivalents: We consider all highly liquid instruments with a maturity of three months or less at the date of purchase to be cash equivalents. Cash equivalents are stated at cost, which approximates market value and are primarily invested in highly-rated instruments issued by government or municipal entities with strong credit standings.
Balance Sheet Offsetting	Balance Sheet Offsetting : We purchase and sell inventories of crude oil with certain same-parties that are net settled in accordance with contractual net settlement provisions. Our policy is to present such balances on a net basis since it presents our accounts receivables and payables consistent with our contractual settlement provisions.
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 $4.5 million at December 31, 2019 and $3.6 million at December 31, 2018 . Accounts receivable attributable to crude oil resales generally represent the sale of excess crude oil to other purchasers and / or users in cases when our crude oil supplies are in excess of our immediate needs as well as certain reciprocal buy / sell exchanges of crude oil. At times we enter into such buy / sell exchanges to facilitate the delivery of quantities to certain locations. In many cases, we enter into net settlement agreements relating to the buy / sell arrangements, which may mitigate credit risk.
Inventories	Inventories: Inventories related to our refining operations are stated at the lower of cost, using the last-in, first-out (“LIFO”) method for crude oil and unfinished and finished refined products, or market. Cost, consisting of raw material, transportation and conversion costs, is determined using the LIFO inventory valuation methodology and market is determined using current replacement costs. Under the LIFO method, the most recently incurred costs are charged to cost of sales and inventories are valued at the earliest acquisition costs. 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. Inventories of our Petro-Canada Lubricants and Sonneborn businesses are stated at the lower of cost, using the first-in, first-out ("FIFO") method, or net realizable value. Inventories consisting of process chemicals, materials and maintenance supplies and renewable identification numbers ("RINs") are stated at the lower of weighted-average cost or net realizable value. Leases: At inception, we determine if an arrangement is or contains a lease. Right-of-use (“ROU”) assets represent our right to use an underlying asset for the lease term and lease liabilities represent our payment obligation under the leasing arrangement. ROU assets and lease liabilities are recognized at the commencement date based on the present value of lease payments over the lease term. We use our estimated incremental borrowing rate (“IBR”) to determine the present value of lease payments as most of our leases do not contain an implicit rate. Our IBR represents the interest rate which we would pay to borrow, on a collateralized basis, an amount equal to the lease payments over a similar term in a similar economic environment. We use the implicit rate when readily determinable. Operating leases are recorded in operating lease right-of-use assets and current and noncurrent operating lease liabilities on our consolidated balance sheet. Finance leases are included in properties, plants and equipment and accrued liabilities and other long-term liabilities on our consolidated balance sheet. Our lease term includes an option to extend the lease when it is reasonably certain that we will exercise that option. Leases with a term of 12 months or less are not recorded on our balance sheet and lease expense is accounted for on a straight-line basis. For certain equipment leases, we apply a portfolio approach for the operating lease ROU assets and liabilities. Also, as a lessee, we separate non-lease components that are identifiable and exclude them from the determination of net present value of lease payment obligations. In addition, HEP, as a lessor, does not separate the non-lease (service) component in contracts in which the lease component is the dominant component. HEP treats these combined components as an operating lease.
Derivative Instruments	Derivative Instruments: All derivative instruments are recognized as either assets or liabilities in our consolidated balance sheets and are measured at fair value. Changes in the derivative instrument's fair value are recognized in earnings unless specific hedge accounting criteria are met. See Note 14 for additional information.
Properties, plants and equipment	Properties, Plants and Equipment: Properties, plants and equipment are stated at cost. Depreciation is provided by the straight-line method over the estimated useful lives of the assets, primarily 15 to 32 years for refining, pipeline and terminal facilities, 10 to 40 years for buildings and improvements, 5 to 30 years for other fixed assets and 5 years for vehicles.
Asset Retirement Obligations	Asset Retirement Obligations: We record legal obligations associated with the retirement of long-lived assets that result from the acquisition, construction, development and / or the normal operation of long-lived assets. The fair value of the estimated cost to retire a tangible long-lived asset is recorded as a liability with the associated retirement costs capitalized as part of the asset's carrying amount in the period in which it is incurred and when a reasonable estimate of the fair value of the liability can be made. If a reasonable estimate cannot be made at the time the liability is incurred, we record the liability when sufficient information is available to estimate the liability's fair value. Certain of our refining assets have no recorded liability for asset retirement obligations since the timing of any retirement and related costs are currently indeterminable. Our asset retirement obligations were $35.9 million and $28.7 million at December 31, 2019 and 2018 , respectively, which are included in “Other long-term liabilities” in our consolidated balance sheets. Accretion expense was insignificant for the years ended December 31, 2019 , 2018 and 2017 .
Intangibles and Goodwill	Intangibles, Goodwill and Long-lived Assets: Intangible assets are assets (other than financial assets) that lack physical substance, and goodwill represents the excess of the cost of an acquired entity over the fair value of the assets acquired and liabilities assumed. Goodwill acquired in a business combination and intangibles with indefinite useful lives are not amortized, whereas intangible assets with finite useful lives are amortized on a straight-line basis. Goodwill and intangible assets that are not subject to amortization are tested for impairment annually or more frequently if an event occurs or circumstances change that would more likely than not reduce the fair value of a reporting unit below its carrying amount. Our goodwill impairment testing first entails either a quantitative assessment or an optional qualitative assessment to determine whether it is more likely than not that the fair value of a reporting unit is less than its carrying amount. If we determine that based on the qualitative factors that it is more likely than not that the fair value of the reporting unit is greater than its carrying amount, a quantitative test is performed in which we estimate the fair value of the related reporting unit. If the carrying amount of a reporting unit exceeds its fair value, the goodwill of that reporting unit is impaired, and we measure goodwill impairment as the excess of the carrying amount of the reporting unit over the related fair value. The carrying amount of our intangible assets and goodwill may fluctuate from period to period due to the effects of foreign currency translation adjustments on goodwill and intangible assets assigned to our Lubricants and Specialty Products segment. Our long-lived assets principally consist of our refining assets that are organized as refining asset groups and the assets of our Lubricants and Specialty Products asset groups. The refinery asset groups also constitute our individual refinery reporting units that are used for testing and measuring goodwill impairments. Our long-lived assets are evaluated for impairment by identifying whether indicators of impairment exist and if so, assessing whether the long-lived assets are recoverable from estimated future undiscounted cash flows. The actual amount of impairment loss measured, if any, is equal to the amount by which the asset group’s carrying value exceeds its fair value. See Note 11 for additional information regarding our goodwill and long-lived assets including impairment charges recorded during the years ended December 31, 2019 and 2017.
Investments in Joint Ventures	Equity Method Investments: We account for investments in which we have a noncontrolling interest, yet have significant influence over the entity, using the equity method of accounting, whereby we record our pro-rata share of earnings, and contributions to and distributions from joint ventures as adjustments to our investment balance. HEP has 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 50% interest in Cheyenne Pipeline, LLC, the owner of a pipeline running from Fort Laramie, Wyoming to Cheyenne, Wyoming (the “Cheyenne Pipeline”). HEP also accounts for Cushing Connect Terminal, a subsidiary of the Cushing Connect Pipeline & Terminal LLC joint venture, using the equity method of accounting, as HEP does not have the ability to direct the activities that most significantly impact the entity. As of December 31, 2019 , HEP's underlying equity and recorded investment balances in the joint ventures are $90.8 million and $120.1 million respectively. The differences are being amortized as adjustments to HEP's pro-rata share of earnings in the joint ventures.
Revenue Recognition	Revenue Recognition: Revenues on refined product and excess crude oil sales are recognized when delivered (via pipeline, in-tank or rack) and the customer obtains control of such inventory, which is typically when title passes and the customer is billed. All revenues are reported inclusive of shipping and handling costs billed and exclusive of any taxes billed to customers. Shipping and handling costs incurred are reported as cost of products sold. Our lubricants and specialty products business has sales agreements with marketers and distributors that provide certain rights of return or provisions for the repurchase of products previously sold to them. Under these agreements, revenues and cost of revenues are deferred until the products have been sold to end customers. Our lubricants and specialty products business also has agreements that create an obligation to deliver products at a future date for which consideration has already been received and recorded as deferred revenue. This revenue is recognized when the products are delivered to the customer. HEP recognizes revenues as products are shipped through its pipelines and terminals and as other services are rendered. Additionally, HEP has certain throughput agreements that specify minimum volume requirements, whereby HEP bills a customer for a minimum level of shipments in the event a customer ships below their contractual requirements. If there are no future performance obligations, HEP recognizes these deficiency payments as revenue. In certain of these throughput agreements, a customer may later utilize such shortfall billings as credit towards future volume shipments in excess of its minimum levels within its respective contractual shortfall make-up period. Such amounts represent an obligation to perform future services, which may be initially deferred and later recognized as revenue based on estimated future shipping levels, including the likelihood of a customer’s ability to utilize such amounts prior to the end of the contractual shortfall make-up period. HEP recognizes the service portion of these deficiency payments as revenue when HEP does not expect it will be required to satisfy these performance obligations in the future based on the pattern of rights exercised by the customer. Payment terms under our contracts with customers are consistent with industry norms and are typically payable within 30 days of the date of invoice.
Cost Classifications	Cost Classifications: Costs of products sold include the cost of crude oil, other feedstocks, blendstocks and purchased finished products, inclusive of transportation costs. We purchase crude oil that at times exceeds the supply needs of our refineries. Quantities in excess of our needs are sold at market prices to purchasers of crude oil that are recorded on a gross basis with the sales price recorded as revenues and the corresponding acquisition cost as cost of products sold. Additionally, we enter into buy / sell exchanges of crude oil with certain parties to facilitate the delivery of quantities to certain locations that are netted at cost. Operating expenses include direct costs of labor, maintenance materials and services, utilities and other direct operating costs. Selling, general and administrative expenses include compensation, professional services and other support costs.
Deferred Maintenance Costs	Deferred Maintenance Costs: Our refinery units require regular major maintenance and repairs which are commonly referred to as “turnarounds.” Catalysts used in certain refinery processes also require regular “change-outs.” The required frequency of the maintenance varies by unit and by catalyst, but generally is every two to five years . Turnaround costs are deferred and amortized over the period until the next scheduled turnaround. Other repairs and maintenance costs are expensed when incurred. Deferred turnaround and catalyst amortization expense was $141.9 million , $110.9 million and $112.9 million for the years ended December 31, 2019 , 2018 and 2017 , respectively.
Environmental Costs	Environmental Costs: 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 and routinely assess our recorded environmental obligations, if any, with respect to such matters. 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 clean-up 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.
Contingencies	Contingencies: We are subject to proceedings, lawsuits and other claims related to environmental, labor, product and other matters. We are required to assess the likelihood of any adverse judgments or outcomes to these matters as well as potential ranges of probable losses. A determination of the amount of reserves required, if any, for these contingencies is made after careful analysis of each individual issue. The required reserves may change in the future due to new developments in each matter or changes in approach such as a change in settlement strategy in dealing with these matters.
Foreign Currency Translation	Foreign Currency Translation: Assets and liabilities recorded in foreign currencies are translated into U.S. dollars using exchange rates in effect as of the balance sheet date. Revenue and expense accounts are translated using the weighted-average exchange rates during the period presented. Foreign currency translation adjustments are recorded as a component of accumulated other comprehensive income. In connection with our PCLI acquisition on February 1, 2017, we issued intercompany notes to initially fund certain of our foreign businesses. Remeasurement adjustments resulting from the conversion of such intercompany financing amounts to functional currencies are recorded as gains and losses as a component of other income (expense) in the income statement. Such adjustments are not recorded to the Lubricants and Specialty Products segment operations, but to Corporate and Other. See Note 20 for additional information on our segments.
Income Taxes	Income Taxes: Provisions for income taxes include deferred taxes resulting from temporary differences in income for financial and tax purposes, using the liability method of accounting for income taxes. The liability method requires the effect of tax rate changes on deferred income taxes to be reflected in the period in which the rate change was enacted. The liability method also requires that deferred tax assets be reduced by a valuation allowance unless it is more likely than not that the assets will be realized. Potential interest and penalties related to income tax matters are recognized in income tax expense. We believe we have appropriate support for the income tax positions taken and to be taken on our income tax returns and that our accruals for tax liabilities are adequate for all open years based on an assessment of many factors, including past experience and interpretations of tax law applied to the facts of each matter.
Inventory Repurchase Obligations	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 for as inventory repurchase obligations under which proceeds received under the initial sell is recognized as inventory repurchase obligations that are subsequently reversed when the inventories are repurchased. For the years ended December 31, 2019 , 2018 and 2017 , we received proceeds of $52.1 million , $51.2 million and $47.4 million and subsequently repaid $49.2 million , $52.5 million and $49.8 million , respectively, under these sell / buy transactions.
New Accounting Pronouncements	Accounting Pronouncements - Recently Adopted Goodwill Impairment Testing In January 2017, Accounting Standard Update (“ASU”) 2017-04, “Simplifying the Test for Goodwill Impairment,” was issued amending the testing for goodwill impairment by eliminating Step 2 from the goodwill impairment test. Step 2 measures a goodwill impairment loss by comparing the implied fair value of a reporting unit’s goodwill with the carrying amount of that goodwill. We adopted this standard effective in the second quarter of 2019, and the adoption of this standard resulted in no change to the amount of goodwill impairment recorded in the second quarter of 2019. Leases In February 2016, ASU 2016-02, “Leases,” was issued requiring leases to be measured and recognized as a lease liability, with a corresponding ROU asset on the balance sheet. We adopted this standard effective January 1, 2019 using the optional transition method, whereby comparative prior period financial information will not be restated and will continue to be reported under the lease accounting standard in effect during those periods. We also elected practical expedients provided by the new standard, including the package of practical expedients, whereby we did not reassess lease classification or initial indirect lease cost under the new standard. In addition, we elected to exclude short-term leases, which at inception have a lease term of 12 months or less, from the amounts recognized on our balance sheet. In addition, HEP elected an expedient whereby a lessor does not have to separate non-lease (service) components from lease components under certain contracts. Under this expedient, HEP treated the combined components of its leases with third parties (i.e., the contracts that are not eliminated upon consolidation of HEP by HFC) as an operating lease in which the dominant component was a lease in accordance with ASC 842. Upon adoption of this standard, we recognized $433.4 million of lease liabilities and corresponding ROU assets on our consolidated balance sheet. Adoption of this standard did not have a material impact on our results of operations or cash flows. In addition, upon our acquisition of Sonneborn on February 1, 2019, we recognized $15.6 million of lease liabilities and corresponding ROU assets.
Description of New Accounting Pronouncements Not yet Adopted	Accounting Pronouncements - Not Yet Adopted Credit Losses Measurement In June 2016, ASU 2016-13, “Measurement of Credit Losses on Financial Instruments,” was issued requiring measurement of all expected credit losses for certain types of financial instruments, including trade receivables, held at the reporting date based on historical experience, current conditions and reasonable and supportable forecasts. This standard is effective January 1, 2020, and our preliminary review of historic and expected credit losses indicates the amount of expected credit losses upon adoption would not be materially different from the current allowance for doubtful accounts balance.

Acquisitions Business Combinati

Acquisitions Business Combination Schedule of Assets Acquired and Liabilities Assumed (Tables)	12 Months Ended
	Dec. 31, 2019
Business Combinations [Abstract]
Schedule of Recognized Identified Assets Acquired and Liabilities Assumed [Table Text Block]	The following summarizes our valuation of the Sonneborn assets and liabilities acquired on February 1, 2019: (In millions) Cash and cash equivalents $ 38.9 Accounts receivable and other current assets 58.4 Inventories 81.0 Properties, plants and equipment 168.2 Goodwill 282.3 Intangibles and other noncurrent assets 231.5 Accounts payable and accrued liabilities (47.9 ) Deferred income tax liabilities (83.0 ) Other long-term liabilities (27.8 ) $ 701.6
Business Combination Proforma Results [Table Text Block]	The proforma effects on consolidated HFC revenue and operating income are not material. Years Ended December 31, 2019 2018 (In thousands) Sales and other revenues $ 2,124,778 $ 2,195,690 Operating income (1) $ (116,254 ) $ 99,371

Leases (Tables)

Leases (Tables)	12 Months Ended
	Dec. 31, 2019
Leases [Abstract]
Schedule of Supplemental Balance Sheet Information	The following table presents the amounts and balance sheet locations of our operating and financing leases recorded on our consolidated balance sheet. December 31, 2019 (In thousands) Operating leases: Operating lease right-of-use assets $ 467,109 Operating lease liabilities 104,415 Noncurrent operating lease liabilities 364,420 Total operating lease liabilities $ 468,835 Finance leases: Properties, plants and equipment, at cost $ 13,406 Accumulated amortization (6,233 ) Properties, plants and equipment, net $ 7,173 Accrued liabilities $ 1,567 Other long-term liabilities 5,163 Total finance lease liabilities $ 6,730 Supplemental balance sheet information related to our leases was as follows: December 31, 2019 Weighted average remaining lease term (in years) Operating leases 7.2 Finance leases 8.1 Weighted average discount rate Operating leases 4.0 % Finance leases 5.2 %
Schedule of Components of Lease Expense and Supplemental Cash Flow Information	The components of lease expense were as follows: Year Ended (In thousands) Operating lease expense $ 112,770 Finance lease expense: Amortization of right-of-use assets 1,543 Interest on lease liabilities 334 Variable lease cost 4,449 Total lease expense $ 119,096 Supplemental cash flow information related to leases was as follows: Year Ended (In thousands) Cash paid for amounts included in the measurement of lease liabilities: Operating cash flows from operating leases $ 116,980 Operating cash flows from finance leases $ 334 Financing cash flows from finance leases $ 1,551 Right-of-use assets obtained in exchange for lease obligations: Operating leases $ 121,750
Schedule of Operating Lease Maturities	As of December 31, 2019 , minimum future lease payments of our operating and finance lease obligations were as follows: Operating Finance (In thousands) 2020 $ 121,511 $ 2,128 2021 102,480 1,304 2022 87,344 1,056 2023 72,751 1,110 2024 49,901 626 2025 and thereafter 124,612 2,255 Future minimum lease payments 558,599 8,479 Less: imputed interest 89,764 1,749 Total lease obligations 468,835 6,730 Less: current obligations 104,415 1,567 Long-term lease obligations $ 364,420 $ 5,163
Schedule of Finance Lease Maturities	As of December 31, 2019 , minimum future lease payments of our operating and finance lease obligations were as follows: Operating Finance (In thousands) 2020 $ 121,511 $ 2,128 2021 102,480 1,304 2022 87,344 1,056 2023 72,751 1,110 2024 49,901 626 2025 and thereafter 124,612 2,255 Future minimum lease payments 558,599 8,479 Less: imputed interest 89,764 1,749 Total lease obligations 468,835 6,730 Less: current obligations 104,415 1,567 Long-term lease obligations $ 364,420 $ 5,163
Schedule of Minimum Undiscounted Lease Payments	Annual minimum undiscounted lease payments in which HEP is a lessor to third-party contracts as of December 31, 2019 were as follows: (In thousands) 2020 $ 18,839 2021 12,794 2022 11,377 2023 11,248 2024 11,248 Thereafter 2,812 Total $ 68,318
Commitments Disclosure [Text Block]	At December 31, 2018, the minimum future rental commitments under operating leases having non-cancellable lease terms in excess of one year were as follows: (In thousands) 2019 $ 104,362 2020 92,491 2021 84,581 2022 70,874 2023 61,063 Thereafter 88,206 Total $ 501,577

Revenues from Contracts with _2

Revenues from Contracts with Customers (Tables)	12 Months Ended
	Dec. 31, 2019
Revenue from Contract with Customer [Abstract]
Disaggregation of Revenue [Table Text Block]	Disaggregated revenues are as follows: Years Ended December 31, 2019 2018 2017 (In thousands) Revenues by type Refined product revenues Transportation fuels (1) $ 12,952,899 $ 13,326,654 $ 11,056,038 Specialty lubricant products (2) 1,864,450 1,636,859 1,415,842 Asphalt, fuel oil and other products (3) 1,025,663 985,234 743,394 Total refined product revenues 15,843,012 15,948,747 13,215,274 Excess crude oil revenues (4) 1,470,148 1,597,321 891,756 Transportation and logistic services 121,027 108,412 77,225 Other revenues (5) 52,391 60,186 67,044 Total sales and other revenues $ 17,486,578 $ 17,714,666 $ 14,251,299 Years Ended December 31, 2019 2018 2017 (In thousands) Refined product revenues by market United States Mid-Continent $ 8,424,191 $ 8,427,200 $ 7,099,754 Southwest 3,621,273 3,772,278 2,952,224 Rocky Mountains 2,208,541 2,476,044 2,055,221 Northeast 578,932 339,407 259,840 Canada 721,169 732,321 673,842 Europe, Asia and Latin America 288,906 201,497 174,393 Total refined product revenues $ 15,843,012 $ 15,948,747 $ 13,215,274 (1) Transportation fuels consist of gasoline, diesel and jet fuel. (2) Specialty lubricant products consist of base oil, waxes, finished lubricants and other specialty fluids. (3) Asphalt, fuel oil and other products revenue include revenues attributable to our Refining and Lubricants and Specialty Products segments of $808.9 million and $216.8 million , respectively, for the year ended December 31, 2019 , $822.6 million and $162.6 million , respectively, for the year ended December 31, 2018 , and $565.2 million and $178.2 million , respectively, for the year ended December 31, 2017 . (4) Excess crude oil revenues represent sales of purchased crude oil inventory that at times exceeds the supply needs of our refineries. (5) Other revenues are principally attributable to our Refining segment.
Contract with Customer, Asset and Liability [Table Text Block]	The following table presents changes to contract liabilities for the years ended December 31, 2019 and 2018 : Years Ended December 31, 2019 2018 (In thousands) Balance at January 1 $ 132 $ 179 Sonneborn acquisition 6,463 — Increase 26,751 6,748 Recognized as revenue (28,694 ) (6,795 ) Balance at December 31 $ 4,652 $ 132
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Table Text Block]	Aggregate minimum volumes expected to be sold (future performance obligations) under our long-term product sales contracts with customers are as follows: 2020 2021 2022 Thereafter Total (In thousands) Refined product sales volumes (barrels) 21,051 14,622 12,775 24,465 72,913 Additionally, HEP has long-term contracts with third-party customers that specify minimum volumes of product to be transported through its pipelines and terminals that result in fixed-minimum annual of revenues through 2025. Annual minimum revenues attributable to HEP’s third-party contracts as of December 31, 2019 are presented below: 2020 2021 2022 Thereafter Total (In thousands) HEP contractual minimum revenues $ 29,536 $ 22,822 $ 13,267 $ 25,308 $ 90,933

Fair Value Measurements (Tables

Fair Value Measurements (Tables)	12 Months Ended
	Dec. 31, 2019
Financial Instruments, Owned, at Fair Value [Abstract]
Carrying Amounts and Estimated Fair Values of Marketable Securities, Derivatives and Senior Notes	The carrying amounts of derivative instruments and RINs credit obligations at December 31, 2019 and 2018 were as follows: Carrying Amount Fair Value by Input Level Financial Instrument Level 1 Level 2 Level 3 (In thousands) December 31, 2019 Assets: Commodity price swaps $ 13,455 $ — $ 13,455 $ — Commodity forward contracts 4,133 — 4,133 — Total assets $ 17,588 $ — $ 17,588 $ — Liabilities: NYMEX futures contracts $ 2,578 $ 2,578 $ — $ — Foreign currency forward contracts 6,722 — 6,722 — Commodity price swaps 1,230 — 1,230 — Commodity forward contracts 3,685 — 3,685 — Total liabilities $ 14,215 $ 2,578 $ 11,637 $ — Carrying Amount Fair Value by Input Level Financial Instrument Level 1 Level 2 Level 3 (In thousands) December 31, 2018 Assets: NYMEX futures contracts $ 2,473 $ 2,473 $ — $ — Foreign currency forward contracts 25,956 — 25,956 — Commodity price swaps 10,817 — 10,817 — Commodity forward contracts 1,034 — 1,034 — Total assets $ 40,280 $ 2,473 $ 37,807 $ — Liabilities: Commodity price swaps $ 956 $ — $ 956 $ — Commodity forward contracts 1,137 — 1,137 — RINs credit obligations (1) 4,084 — 4,084 — Total liabilities $ 6,177 $ — $ 6,177 $ —

Earnings Per Share (Tables)

Earnings Per Share (Tables)	12 Months Ended
	Dec. 31, 2019
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: Years Ended December 31, 2019 2018 2017 (In thousands, except per share data) Net income attributable to HollyFrontier stockholders $ 772,388 $ 1,097,960 $ 805,395 Participating securities’ (restricted stock) share in earnings 1,034 3,714 5,047 Net income attributable to common shares $ 771,354 $ 1,094,246 $ 800,348 Average number of shares of common stock outstanding 166,287 175,009 176,174 Effect of dilutive variable restricted shares and performance share units (1) 1,098 1,652 1,022 Average number of shares of common stock outstanding assuming dilution 167,385 176,661 177,196 Basic earnings per share $ 4.64 $ 6.25 $ 4.54 Diluted earnings per share $ 4.61 $ 6.19 $ 4.52 (1) Excludes anti-dilutive restricted and performance share units of: 302 238 543

Stock-Based Compensation (Table

Stock-Based Compensation (Tables)	12 Months Ended
	Dec. 31, 2019
Share-based Payment Arrangement, Noncash Expense [Abstract]
Summary Of Restricted Stock Activity	A summary of restricted stock and restricted stock unit activity during the year ended December 31, 2019 is presented below: Restricted Stock and Restricted Stock Units Grants Weighted Average Grant Date Fair Value Aggregate Intrinsic Value ($000) Outstanding at January 1, 2019 1,196,914 $ 46.81 Granted 661,329 $ 52.62 Vested (739,613 ) $ 41.74 Forfeited (60,234 ) $ 46.30 Converted from performance share units 43,385 $ 35.80 Outstanding at December 31, 2019 1,101,781 $ 53.30 $ 55,871
Summary Of Performance Share Unit Activity	A summary of performance share unit activity and changes during the year ended December 31, 2019 is presented below: Performance Share Units Grants Outstanding at January 1, 2019 662,431 Granted 177,428 Vested (427,715 ) Forfeited (11,046 ) Converted to restricted stock units (25,510 ) Outstanding at December 31, 2019 375,588

Inventories (Tables)

Inventories (Tables)	12 Months Ended
	Dec. 31, 2019
Inventory, Net [Abstract]
Inventory Components	Inventory consists of the following components: December 31, 2019 2018 (In thousands) Crude oil $ 489,169 $ 503,705 Other raw materials and unfinished products (1) 394,045 360,124 Finished products (2) 639,938 662,713 Lower of cost or market reserve (240,363 ) (360,138 ) Process chemicals (3) 36,786 31,413 Repairs and maintenance supplies and other (4) 154,627 156,562 Total inventory $ 1,474,202 $ 1,354,379 (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. (4) Includes RINs

Properties, Plants and Equipm_2

Properties, Plants and Equipment (Tables)	12 Months Ended
	Dec. 31, 2019
Property, Plant and Equipment [Abstract]
Components Of Property, Plants And Equipment	The components of properties, plants and equipment are as follows: December 31, 2019 2018 (In thousands) Land, buildings and improvements $ 447,547 $ 455,508 Refining facilities 4,258,764 4,034,546 Pipelines and terminals 1,775,657 1,729,994 Transportation vehicles 27,214 20,311 Other fixed assets 540,953 296,843 Construction in progress 187,162 243,778 7,237,297 6,780,980 Accumulated depreciation (2,414,585 ) (2,098,446 ) $ 4,822,712 $ 4,682,534

Goodwill and Long-lived Asset_2

Goodwill and Long-lived Asset Impairment (Tables)	12 Months Ended
	Dec. 31, 2019
Finite-Lived Intangible Assets [Line Items]
Schedule of Finite-Lived Intangible Assets [Table Text Block]	The carrying amounts of our intangible assets presented in “Intangibles and other” in our consolidated balance sheet are as follows: December 31 Useful Life 2019 2018 (In thousands) Customer relationships 10 - 20 years $ 245,479 $ 91,941 Transportation agreements 30 years 59,933 59,933 Trademarks, patents and other 10 - 20 years 154,863 83,326 460,275 235,200 Accumulated amortization (86,768 ) (52,834 ) Total intangibles, net $ 373,507 $ 182,366
Schedule of Goodwill [Table Text Block]	The following is a summary of our goodwill by segment: Refining Lubricants and Specialty Products HEP Total (In thousands) Balance at December 31, 2018 Goodwill $ 2,042,790 $ 198,734 $ 314,229 $ 2,555,753 Accumulated impairment losses (309,318 ) — — (309,318 ) 1,733,472 198,734 314,229 2,246,435 Additional goodwill acquired — 282,273 — 282,273 Current year impairment losses — (152,712 ) — (152,712 ) Current year adjustments — — (1,356 ) (1,356 ) Foreign currency translation adjustment — (733 ) — (733 ) Balance at December 31, 2019 Goodwill 2,042,790 480,274 312,873 2,835,937 Accumulated impairment losses (309,318 ) (152,712 ) — (462,030 ) $ 1,733,472 $ 327,562 $ 312,873 $ 2,373,907

Debt (Tables)

Debt (Tables)	12 Months Ended
	Dec. 31, 2019
Debt Disclosure [Abstract]
Carrying Amounts Of Long-Term Debt	The carrying amounts of long-term debt are as follows: December 31, 2019 2018 (In thousands) HollyFrontier 5.875% Senior Notes Principal $ 1,000,000 $ 1,000,000 Unamortized discount and debt issuance costs (6,391 ) (7,360 ) 993,609 992,640 HEP Credit Agreement 965,500 923,000 HEP 6% Senior Notes Principal 500,000 500,000 Unamortized discount and debt issuance costs (3,469 ) (4,100 ) 496,531 495,900 Total HEP long-term debt 1,462,031 1,418,900 Total long-term debt $ 2,455,640 $ 2,411,540 The fair values of the senior notes are as follows: December 31, 2019 2018 (In thousands) HollyFrontier senior notes $ 1,127,610 $ 1,019,160 HEP senior notes $ 522,045 $ 488,310 These fair values are based on a Level 2 input. See Note 6 for additional information on Level 2 inputs.
Principal Maturities Of Long-Term Debt	Principal maturities of long-term debt as of December 31, 2019 are as follows: Years Ending December 31, (In thousands) 2020 $ — 2021 — 2022 965,500 2023 — 2024 500,000 Thereafter 1,000,000 Total $ 2,465,500

Derivative Instruments and He_2

Derivative Instruments and Hedging Activities (Tables)	12 Months Ended
	Dec. 31, 2019
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 hedging instruments under hedge accounting: Net Unrealized Gain (Loss) Recognized in OCI Gain (Loss) Reclassified into Earnings Derivatives Designated as Cash Flow Hedging Instruments Years Ended December 31, Income Statement Location Years Ended December 31, 2019 2018 2017 2019 2018 2017 (In thousands) Commodity contracts $ (5,349 ) $ 11,221 $ 14,538 Sales and other revenues $ (1,799 ) $ (5,093 ) $ 7,836 Cost of products sold 22,876 — (299 ) Operating expenses (1,364 ) (962 ) (19,244 ) Interest rate contracts (1) — — (91 ) Interest expense — — 179 Total $ (5,349 ) $ 11,221 $ 14,447 $ 19,713 $ (6,055 ) $ (11,528 ) (1) HEP used interest rate swap contracts to manage its exposure to interest rate risk, which matured in July 2017.
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: Gain (Loss) Recognized in Earnings Derivatives Not Designated as Hedging Instruments Years Ended December 31, Income Statement Location 2019 2018 2017 (In thousands) Commodity contracts Cost of products sold $ (8,475 ) $ 16,655 $ (12,327 ) Operating expenses — — (6,697 ) Interest expense (6,427 ) (198 ) — Foreign currency contracts Gain on foreign currency transactions (17,430 ) 41,834 — Gain on foreign currency swap contracts (1) — — 24,545 Total $ (32,332 ) $ 58,291 $ 5,521
Schedule of Notional Amounts of Outstanding Derivatives Serving as Economic Hedges	As of December 31, 2019 , we have the following notional contract volumes related to outstanding derivative instruments: Notional Contract Volumes by Year of Maturity Total Outstanding Notional 2020 2021 Unit of Measure Derivatives designated as hedging instruments: Natural gas price swaps - long 3,600,000 1,800,000 1,800,000 MMBTU Crude oil price swaps (basis spread) - long 4,758,000 4,758,000 — Barrels Derivatives not designated as hedging instruments: NYMEX futures (WTI) - short 1,365,000 1,365,000 — Barrels Crude oil price swaps (basis spread) - long 1,464,000 1,464,000 — Barrels Forward gasoline and diesel contracts - long 1,251,200 1,251,200 — Barrels Foreign currency forward contracts 434,340,348 434,340,348 — U. S. dollar Forward commodity contracts (platinum) 41,147 — 41,147 Troy ounces
Schedule of Derivative Instruments in Statement of Financial Position, Fair Value	The following table presents the fair value and balance sheet locations of our outstanding derivative instruments. These amounts are presented on a gross basis with offsetting balances that reconcile to a net asset or liability position in our consolidated balance sheets. We present on a net basis to reflect the net settlement of these positions in accordance with provisions of our master netting arrangements. Derivatives in Net Asset Position Derivatives in Net Liability Position Gross Assets Gross Liabilities Offset in Balance Sheet Net Assets Recognized in Balance Sheet Gross Liabilities Gross Assets Offset in Balance Sheet Net Liabilities Recognized in Balance Sheet (In thousands) December 31, 2019 Derivatives designated as cash flow hedging instruments: Commodity price swap contracts $ 7,526 $ (1,784 ) $ 5,742 $ 1,230 $ — $ 1,230 $ 7,526 $ (1,784 ) $ 5,742 $ 1,230 $ — $ 1,230 Derivatives not designated as cash flow hedging instruments: NYMEX futures contracts $ — $ — $ — $ 2,578 $ — $ 2,578 Commodity price swap contracts 7,713 — 7,713 — — — Commodity forward contracts 4,133 — 4,133 3,685 — 3,685 Foreign currency forward contracts — — — 6,722 — 6,722 $ 11,846 $ — $ 11,846 $ 12,985 $ — $ 12,985 Total net balance $ 17,588 $ 14,215 Balance sheet classification: Prepayment and other $ 17,588 Accrued liabilities $ 12,985 — Other long-term liabilities 1,230 $ 17,588 $ 14,215 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, 2018 Derivatives designated as cash flow hedging instruments: Commodity price swap contracts $ 11,790 $ (973 ) $ 10,817 $ 1,755 $ (799 ) $ 956 $ 11,790 $ (973 ) $ 10,817 $ 1,755 $ (799 ) $ 956 Derivatives not designated as cash flow hedging instruments: NYMEX futures contracts $ 2,473 $ — $ 2,473 $ — $ — $ — Commodity forward contracts 1,034 — 1,034 1,137 — 1,137 Foreign currency forward contracts 25,956 — 25,956 — — — $ 29,463 $ — $ 29,463 $ 1,137 $ — $ 1,137 Total net balance $ 40,280 $ 2,093 Prepayments and other $ 37,982 Accrued liabilities $ 1,137 Intangibles and other 2,298 Other long-term liabilities 956 Balance sheet classification: $ 40,280 $ 2,093

Income Taxes (Tables)

Income Taxes (Tables)	12 Months Ended
	Dec. 31, 2019
Income Tax Disclosure [Abstract]
Provision For Income Taxes	The provision for income taxes is comprised of the following: Years Ended December 31, 2019 2018 2017 (In thousands) Current Federal $ 187,134 $ 239,566 $ 102,786 State 29,547 40,788 2,760 Foreign 3,805 (10,080 ) 19,597 Deferred Federal 77,916 46,434 (156,767 ) State 26,073 27,845 28,527 Foreign (25,323 ) 2,690 (9,282 ) $ 299,152 $ 347,243 $ (12,379 )
Reconciliation Of Effective Tax Rate	The statutory federal income tax rate applied to pre-tax book income reconciles to income tax expense (benefit) as follows: Years Ended December 31, 2019 2018 2017 (In thousands) Tax computed at statutory rate $ 246,013 $ 320,138 $ 304,102 Effect of the Tax Cuts and Jobs Act — (7,800 ) (307,101 ) State income taxes, net of federal tax benefit 47,259 56,936 21,343 Domestic production activities deduction — — (9,937 ) Noncontrolling interest in net income (25,494 ) (20,215 ) (29,357 ) Effect of nondeductible goodwill impairment charge 32,069 — — Other (695 ) (1,816 ) 8,571 $ 299,152 $ 347,243 $ (12,379 )
Deferred Tax Assets And Liabilities	Our deferred income tax assets and liabilities as of December 31, 2019 and 2018 are as follows: December 31, 2019 Assets Liabilities Total (In thousands) Deferred income taxes Properties, plants and equipment (due primarily to tax in excess of book depreciation) $ — $ (809,966 ) $ (809,966 ) Lease obligation 120,435 — 120,435 Accrued employee benefits 13,635 — 13,635 Accrued post-retirement benefits 11,027 — 11,027 Accrued environmental costs 28,708 — 28,708 Hedging instruments — (2,439 ) (2,439 ) Inventory differences — (43,500 ) (43,500 ) Deferred turnaround costs — (135,920 ) (135,920 ) Net operating loss and tax credit carryforwards 22,912 — 22,912 Investment in HEP — (95,037 ) (95,037 ) Valuation allowance — (4,600 ) (4,600 ) Other 5,475 — 5,475 Total $ 202,192 $ (1,091,462 ) $ (889,270 ) December 31, 2018 Assets Liabilities Total (In thousands) Deferred income taxes Properties, plants and equipment (due primarily to tax in excess of book depreciation) $ — $ (577,133 ) $ (577,133 ) Accrued employee benefits 15,395 — 15,395 Accrued post-retirement benefits 8,482 — 8,482 Accrued environmental costs 29,937 — 29,937 Hedging instruments — (4,099 ) (4,099 ) Inventory differences — (22,518 ) (22,518 ) Deferred turnaround costs — (87,360 ) (87,360 ) Net operating loss and tax credit carryforwards 13,702 — 13,702 Investment in HEP — (94,587 ) (94,587 ) Valuation allowance — (3,100 ) (3,100 ) Other — (1,295 ) (1,295 ) Total $ 67,516 $ (790,092 ) $ (722,576 )
Summary of Positions for which Significant Change in Unrecognized Tax Benefits is Reasonably Possible [Table Text Block]	A reconciliation of the beginning and ending amount of unrecognized tax benefits is as follows: Years Ended December 31, 2019 2018 2017 (In thousands) Balance at January 1 $ 53,752 $ 53,752 $ 22,137 Additions based on tax positions related to the current year — — 31,615 Additions for tax positions of prior years 2,893 — — Reductions for tax positions of prior years (24 ) — — Balance at December 31 $ 56,621 $ 53,752 $ 53,752

Stockholders' Equity (Tables)

Stockholders' Equity (Tables)	12 Months Ended
	Dec. 31, 2019
Stockholders' Equity Note [Abstract]
Changes To Equity	Shares of our common stock outstanding and activity for the years ended December 31, 2019 , 2018 and 2017 are presented below: Years Ended December 31, 2019 2018 2017 Common shares outstanding at January 1 172,121,491 177,407,622 177,345,266 Issuance of restricted stock, excluding restricted stock with performance feature — — 55,626 Vesting of performance units 592,602 115,596 138,374 Vesting of restricted stock with performance feature 412,465 543,396 350,063 Forfeitures of restricted stock (13,807 ) (58,497 ) (139,634 ) Purchase of treasury stock (1) (11,266,226 ) (5,886,626 ) (342,073 ) Common shares outstanding at December 31 161,846,525 172,121,491 177,407,622 (1) Includes 415,466 , 369,255 and 342,073 shares, respectively, withheld under the terms of stock-based compensation agreements to provide funds for the payment of payroll and income taxes due at the vesting of share-based awards, as well as other stock repurchases under separate authority from our Board of Directors.

Other Comprehensive Income (L_2

Other Comprehensive Income (Loss) (Tables)	12 Months Ended
	Dec. 31, 2019
Other Comprehensive Income (Loss), before Tax [Abstract]
Components And Allocated Tax Effects Of Other Comprehensive Income (Loss)	The components and allocated tax effects of other comprehensive income are as follows: Before-Tax Tax Expense (Benefit) After-Tax (In thousands) Year Ended December 31, 2019 Net change in foreign currency translation adjustment $ 13,337 $ 2,848 $ 10,489 Net unrealized loss on hedging instruments (5,349 ) (1,365 ) (3,984 ) Net change in pension and other post-retirement benefit obligations (7,207 ) (1,853 ) (5,354 ) Other comprehensive income attributable to HollyFrontier stockholders $ 781 $ (370 ) $ 1,151 Year Ended December 31, 2018 Net change in foreign currency translation adjustment $ (38,227 ) $ (8,064 ) $ (30,163 ) Net unrealized gain on hedging instruments 11,221 2,857 8,364 Net change in pension and other post-retirement benefit obligations (1,507 ) (378 ) (1,129 ) Other comprehensive loss attributable to HollyFrontier stockholders $ (28,513 ) $ (5,585 ) $ (22,928 ) Year Ended December 31, 2017 Net change in foreign currency translation adjustment $ 22,151 $ 7,774 $ 14,377 Net unrealized loss on marketable securities $ (4 ) $ (1 ) $ (3 ) Net unrealized gain on hedging instruments 14,447 5,613 8,834 Net change in pension and other post-retirement benefit obligations (5,807 ) (2,037 ) (3,770 ) Other comprehensive income 30,787 11,349 19,438 Less other comprehensive loss attributable to noncontrolling interest (57 ) — (57 ) Other comprehensive income attributable to HollyFrontier stockholders $ 30,844 $ 11,349 $ 19,495
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 Years Ended December 31, 2019 2018 2017 (In thousands) Hedging instruments: Commodity price swaps $ (1,799 ) $ (5,093 ) $ 7,836 Sales and other revenues 22,876 — (299 ) Cost of products sold (1,364 ) (962 ) (19,244 ) Operating expenses Interest rate swaps — — 179 Interest expense 19,713 (6,055 ) (11,528 ) 5,027 (1,544 ) (4,490 ) Income tax benefit 14,686 (4,511 ) (7,038 ) Net of tax — — (74 ) Noncontrolling interest 14,686 (4,511 ) (7,112 ) Net of tax and noncontrolling interest Other post-retirement benefit obligations: Post-retirement healthcare obligations 3,587 3,481 3,481 Other, net 915 888 1,347 Income tax expense 2,672 2,593 2,134 Net of tax Retirement restoration plan (6 ) (27 ) (17 ) Other, net (2 ) (7 ) (7 ) Income tax benefit (4 ) (20 ) (10 ) Net of tax Total reclassifications for the period $ 17,354 $ (1,938 ) $ (4,988 )
Accumulated Other Comprehensive Loss In Equity	Accumulated other comprehensive income in the equity section of our consolidated balance sheets includes: Years Ended December 31, 2019 2018 (In thousands) Foreign currency translation adjustment $ (2,187 ) $ (12,676 ) Unrealized loss on pension obligation (1,733 ) (1,404 ) Unrealized gain on post-retirement benefit obligations 15,333 20,358 Unrealized gain on hedging instruments 3,361 7,345 Accumulated other comprehensive income $ 14,774 $ 13,623

Post-retirement Plans (Tables)

Post-retirement Plans (Tables)	12 Months Ended
	Dec. 31, 2019
Pension and Other Postretirement Benefits Cost (Reversal of Cost) [Abstract]
Changes in Projected Benefit Obligations - PCLI	The following table sets forth the changes in the benefit obligation and plan assets of our PCLI pension plans for the years ended December 31, 2019 and 2018 , and for our Sonneborn Netherlands plans for the period February 1, 2019 to December 31, 2019: Years Ended December 31, 2019 2018 (In thousands) Change in plans' benefit obligations Pension plans benefit obligation - beginning of period $ 64,435 $ 63,582 Acquisition of Sonneborn 31,686 — Service cost 4,135 4,420 Interest cost 3,026 2,249 Actuarial loss 5,161 1,058 Benefits paid (1,132 ) (1,429 ) Transfer from other plans 330 — Foreign currency exchange rate changes 2,769 (5,445 ) Pension plans benefit obligation - end of year $ 110,410 $ 64,435 Change in pension plans assets Fair value of plans assets - beginning of period $ 62,462 $ 59,261 Acquisition of Sonneborn 29,376 — Actual return on plans assets 7,947 3,599 Employer contributions 3,681 6,239 Benefits paid (1,132 ) (1,429 ) Transfer payments 330 — Foreign currency exchange rate changes 2,694 (5,208 ) Fair value of plans assets - end of year $ 105,358 $ 62,462 Funded status Under-funded balance $ (5,052 ) $ (1,973 ) Amounts recognized in consolidated balance sheets Other long-term liabilities $ (5,052 ) $ (1,973 ) Amounts recognized in accumulated other comprehensive income Cumulative actuarial loss $ 3,155 $ 1,977 The accumulated benefit obligation was $100.5 million and $52.5 million at December 31, 2019 and 2018 , respectively, which are also the measurement dates used for our pension plans.
Net Periodic Pension Expense Components - PCLI	Net periodic pension expense consisted of the following components: Years Ended December 31, 2019 2018 (In thousands) Service cost - benefit earned during the period $ 4,135 $ 4,420 Interest cost on projected benefit obligations 3,026 2,249 Expected return on plans assets (3,840 ) (3,464 ) Net periodic pension expense $ 3,321 $ 3,205
Schedule of Allocation of Plan Assets [Table Text Block]	At December 31, 2019 and 2018 , PCLI's pension plans assets were allocated as follows: Percentage of Plan Assets at Year End December 31, 2019 December 31, 2018 Asset Category Canadian equities 47 % — % Fixed income 29 % — % Real estate and infrastructure 14 % — % Other 9 % — % Cash 1 % 100 % Total 100 % 100 %
Changes in Projected Benefit Obligations, Fair Value of Plan Assets, and Funded Status of Plan	The following table sets forth the changes in the benefit obligation and plan assets of our post-retirement healthcare plans for the years ended December 31, 2019 and 2018 : Years Ended December 31, 2019 2018 (In thousands) Change in plans' benefit obligation Post-retirement plans' benefit obligation - beginning of year $ 26,880 $ 29,499 Sonneborn acquisition 877 — Service cost 1,582 1,648 Interest cost 1,029 938 Participant contributions — 178 Benefits paid (2,028 ) (1,931 ) Actuarial loss (gain) 2,412 (2,643 ) Foreign currency exchange rate changes 521 (809 ) Post-retirement plans' benefit obligation - end of year $ 31,273 $ 26,880 Change in plan assets Fair value of plan assets - beginning of year $ — $ — Employer contributions 2,003 1,676 Participant contributions 25 255 Benefits paid (2,028 ) (1,931 ) Fair value of plan assets - end of year $ — $ — Funded status Under-funded balance $ (31,273 ) $ (26,880 ) Amounts recognized in consolidated balance sheets Accrued liabilities $ (1,817 ) $ (1,909 ) Other long-term liabilities (29,456 ) (24,971 ) $ (31,273 ) $ (26,880 ) Amounts recognized in accumulated other comprehensive income Cumulative actuarial (loss) gain $ (197 ) $ 2,379 Prior service credit 21,992 25,473 Total $ 21,795 $ 27,852
Weighted Average Assumptions Used	The weighted average assumptions used to determine end of period benefit obligations: December 31, 2019 2018 Discount rate 2.94% - 3.20% 3.70% - 3.95% Current health care trend rate 6.00% - 6.50% 6.50% Ultimate health care trend rate 4.50% - 5.00% 5.00% Year rate reaches ultimate trend rate 2022 - 2023 2022 - 2028
Net Periodic Pension Expense	Net periodic post-retirement credit consisted of the following components: Years Ended December 31, 2019 2018 2017 (In thousands) Service cost – benefit earned during the year $ 1,582 $ 1,648 $ 1,511 Interest cost on projected benefit obligations 1,029 938 987 Amortization of prior service credit (3,481 ) (3,481 ) (3,481 ) Amortization of gain (106 ) — — Net periodic post-retirement credit $ (976 ) $ (895 ) $ (983 )
Effect of One Percent Change in Health Care Cost Trend Rates	The effect of a 1% change in health care cost trend rates is as follows: 1% Point Increase 1% Point Decrease (In thousands) Service and interest costs $ 502 $ (396 ) Year-end accumulated post-retirement benefit obligation $ 3,489 $ (2,990 )

Contingencies And Contractual_2

Contingencies And Contractual Commitments (Tables)	12 Months Ended
	Dec. 31, 2019
Commitments and Contingencies Disclosure [Abstract]
Contractual Obligation, Fiscal Year Maturity Schedule	At December 31, 2019 , the minimum future transportation and storage fees under transportation agreements having terms in excess of one year are as follows: (In thousands) 2020 $ 137,457 2021 116,058 2022 111,058 2023 112,399 2024 111,939 Thereafter 685,941 Total $ 1,274,852

Segment Information (Tables)

Segment Information (Tables)	12 Months Ended
	Dec. 31, 2019
Segment Reporting [Abstract]
Schedule Of Segment Reporting Information	Refining Lubricants and Specialty Products HEP Corporate, Other and Eliminations Consolidated (In thousands) Year Ended December 31, 2019 Sales and other revenues: Revenues from external customers $ 15,284,110 $ 2,081,221 $ 121,027 $ 220 $ 17,486,578 Intersegment revenues 312,678 11,307 411,750 (735,735 ) — $ 15,596,788 $ 2,092,528 $ 532,777 $ (735,515 ) $ 17,486,578 Cost of products sold (exclusive of lower of cost or market inventory valuation adjustment) $ 12,980,506 $ 1,580,036 $ — $ (642,158 ) $ 13,918,384 Lower of cost or market inventory valuation adjustment $ (119,775 ) $ — $ — $ — $ (119,775 ) Operating expenses $ 1,095,488 $ 231,523 $ 161,996 $ (94,955 ) $ 1,394,052 Selling, general and administrative expenses $ 120,518 $ 168,595 $ 10,251 $ 54,872 $ 354,236 Depreciation and amortization $ 309,932 $ 88,781 $ 96,706 $ 14,506 $ 509,925 Goodwill impairment $ — $ 152,712 $ — $ — $ 152,712 Income (loss) from operations $ 1,210,119 $ (129,119 ) $ 263,824 $ (67,780 ) $ 1,277,044 Earnings of equity method investments $ — $ — $ 5,180 $ — $ 5,180 Capital expenditures $ 199,002 $ 40,997 $ 30,112 $ 23,652 $ 293,763 Total assets $ 7,189,094 $ 2,223,418 $ 2,205,437 $ 546,892 $ 12,164,841 Refining Lubricants and Specialty Products HEP Corporate, Other and Eliminations Consolidated (In thousands) Year Ended December 31, 2018 Sales and other revenues: Revenues from external customers $ 15,806,304 $ 1,799,506 $ 108,412 $ 444 $ 17,714,666 Intersegment revenues 370,259 13,197 397,808 (781,264 ) — $ 16,176,563 $ 1,812,703 $ 506,220 $ (780,820 ) $ 17,714,666 Cost of products sold (exclusive of lower of cost or market inventory valuation adjustment) $ 13,250,849 $ 1,381,540 $ — $ (691,607 ) $ 13,940,782 Lower of cost or market inventory valuation adjustment $ 136,305 $ — $ — $ — $ 136,305 Operating expenses $ 1,055,209 $ 167,820 $ 146,430 $ (83,621 ) $ 1,285,838 Selling, general and administrative expenses $ 113,641 $ 143,750 $ 11,041 $ 21,992 $ 290,424 Depreciation and amortization $ 284,439 $ 43,255 $ 98,492 $ 11,138 $ 437,324 Income (loss) from operations $ 1,336,120 $ 76,338 $ 250,257 $ (38,722 ) $ 1,623,993 Earnings of equity method investments $ — $ — $ 5,825 $ — $ 5,825 Capital expenditures $ 202,791 $ 37,448 $ 54,141 $ 16,649 $ 311,029 Total assets $ 6,465,155 $ 1,506,209 $ 2,142,027 $ 881,210 $ 10,994,601 Year Ended December 31, 2017 Sales and other revenues: Revenues from external customers $ 12,579,672 $ 1,594,036 $ 77,225 $ 366 $ 14,251,299 Intersegment revenues 338,390 — 377,137 (715,527 ) — $ 12,918,062 $ 1,594,036 $ 454,362 $ (715,161 ) $ 14,251,299 Cost of products sold (exclusive of lower of cost or market inventory valuation adjustment) $ 11,009,419 $ 1,093,984 $ — $ (635,530 ) $ 11,467,873 Lower of cost or market inventory valuation adjustment $ (107,479 ) $ (1,206 ) $ — $ — $ (108,685 ) Operating expenses $ 1,008,859 $ 222,461 $ 137,856 $ (72,507 ) $ 1,296,669 Selling, general and administrative expenses $ 103,246 $ 105,666 $ 14,336 $ 42,473 $ 265,721 Depreciation and amortization $ 289,434 $ 31,894 $ 77,660 $ 10,949 $ 409,937 Long-lived asset impairment $ 19,247 $ — $ — $ — $ 19,247 Income (loss) from operations $ 595,336 $ 141,237 $ 224,510 $ (60,546 ) $ 900,537 Earnings of equity method investments $ — $ — $ 12,510 $ — $ 12,510 Capital expenditures $ 176,533 $ 31,464 $ 44,810 $ 19,452 $ 272,259 Total assets $ 6,474,666 $ 1,610,472 $ 2,191,984 $ 415,032 $ 10,692,154

Quarterly Information (Unaudi_2

Quarterly Information (Unaudited) (Tables)	12 Months Ended
	Dec. 31, 2019
Quarterly Financial Information Disclosure [Abstract]
Schedule Of Quarterly Information	First Quarter Second Quarter Third Quarter Fourth Quarter Year (In thousands, except per share data) Year Ended December 31, 2019 Sales and other revenues $ 3,897,247 $ 4,782,615 $ 4,424,828 $ 4,381,888 $ 17,486,578 Operating costs and expenses $ 3,507,906 $ 4,450,874 $ 3,998,049 $ 4,252,705 $ 16,209,534 Income from operations (1) (2) $ 389,341 $ 331,741 $ 426,779 $ 129,183 $ 1,277,044 Income before income taxes $ 363,991 $ 306,153 $ 401,001 $ 100,359 $ 1,171,504 Net income attributable to HollyFrontier stockholders $ 253,055 $ 196,915 $ 261,813 $ 60,605 $ 772,388 Net income per share attributable to HollyFrontier stockholders - basic $ 1.48 $ 1.16 $ 1.60 $ 0.38 $ 4.64 Net income per share attributable to HollyFrontier stockholders - diluted $ 1.47 $ 1.15 $ 1.58 $ 0.37 $ 4.61 Dividends per common share $ 0.33 $ 0.33 $ 0.33 $ 0.35 $ 1.34 Average number of shares of common stock outstanding: Basic 170,851 169,356 163,676 161,398 166,287 Diluted 172,239 170,547 165,011 162,898 167,385 Year Ended December 31, 2018 Sales and other revenues $ 4,128,427 $ 4,471,236 $ 4,770,799 $ 4,344,204 $ 17,714,666 Operating costs and expenses $ 3,732,580 $ 3,964,259 $ 4,267,282 $ 4,126,552 $ 16,090,673 Income from operations (3) $ 395,847 $ 506,977 $ 503,517 $ 217,652 $ 1,623,993 Income before income taxes $ 373,899 $ 480,360 $ 478,390 $ 191,818 $ 1,524,467 Net income attributable to HollyFrontier stockholders $ 268,091 $ 345,507 $ 342,466 $ 141,896 $ 1,097,960 Net income per share attributable to HollyFrontier stockholders - basic $ 1.51 $ 1.96 $ 1.95 $ 0.82 $ 6.25 Net income per share attributable to HollyFrontier stockholders - diluted $ 1.50 $ 1.94 $ 1.93 $ 0.81 $ 6.19 Dividends per common share $ 0.33 $ 0.33 $ 0.33 $ 0.33 $ 1.32 Average number of shares of common stock outstanding: Basic 176,617 175,899 175,097 172,485 175,009 Diluted 177,954 177,586 176,927 174,259 176,661 (1) For 2019, income from operations reflects non-cash lower of cost or market inventory valuation reductions of $232.3 million for the first quarter, and charges of $47.8 million , $34.1 million and $30.7 million for the second, third and fourth quarters, respectively. (2) For 2019, income from operations reflects goodwill impairment charges of $152.7 million in the second quarter. (3) For 2018, income from operations reflects non-cash lower of cost or market inventory valuation reductions of $103.8 million and $106.9 million for the first and second quarters, respectively, and charges of $17.8 million and $329.2 million

Description of Business and S_3

Description of Business and Summary of Significant Accounting Policies (Details) $ in Thousands	12 Months Ended
	Dec. 31, 2019USD ($)Petroleum_Refineriesmi	Dec. 31, 2018USD ($)	Dec. 31, 2017USD ($)	Feb. 01, 2019USD ($)	Jan. 01, 2019USD ($)
Schedule of Organization, Consolidation and Presentation of Financial Statements Disclosure and Significant Accounting Policies [Line Items]
Number of refineries located in Tulsa, Oklahoma | Petroleum_Refineries	2
Refinery distance from main city (miles) | mi	65
Percentage of ownership interest	50.00%
Allowance for doubtful accounts	$ 4,500	$ 3,600
Asset retirement obligation	35,900	28,700
Turnaround and Catalyst Amortization Costs	141,900	110,900	$ 112,900
Investments in and Advances to Affiliates, Amount of Equity	90,800
Investment in Equity Company	120,100
Proceeds from Inventory Repurchase Agreements	52,100	51,200	47,400
Payments under Inventory Repurchase Agreements	49,200	$ 52,500	$ 49,800
Operating Lease, Liability	$ 468,835			$ 15,600	$ 433,400
Transportation vehicles
Schedule of Organization, Consolidation and Presentation of Financial Statements Disclosure and Significant Accounting Policies [Line Items]
Estimated useful life of assets, minimum	5 years
HEP
Schedule of Organization, Consolidation and Presentation of Financial Statements Disclosure and Significant Accounting Policies [Line Items]
Percentage of ownership in variable interest entity	57.00%
Minimum [Member]
Schedule of Organization, Consolidation and Presentation of Financial Statements Disclosure and Significant Accounting Policies [Line Items]
Frequency of maintenance, in period	2 years
Minimum [Member] | Refining Pipeline And Terminal Facilities [Member]
Schedule of Organization, Consolidation and Presentation of Financial Statements Disclosure and Significant Accounting Policies [Line Items]
Estimated useful life of assets, minimum	15 years
Minimum [Member] | Buildings and Improvements [Member]
Schedule of Organization, Consolidation and Presentation of Financial Statements Disclosure and Significant Accounting Policies [Line Items]
Estimated useful life of assets, minimum	10 years
Minimum [Member] | Other fixed assets
Schedule of Organization, Consolidation and Presentation of Financial Statements Disclosure and Significant Accounting Policies [Line Items]
Estimated useful life of assets, minimum	5 years
Maximum [Member]
Schedule of Organization, Consolidation and Presentation of Financial Statements Disclosure and Significant Accounting Policies [Line Items]
Frequency of maintenance, in period	5 years
Maximum [Member] | Refining Pipeline And Terminal Facilities [Member]
Schedule of Organization, Consolidation and Presentation of Financial Statements Disclosure and Significant Accounting Policies [Line Items]
Estimated useful life of assets, minimum	32 years
Maximum [Member] | Buildings and Improvements [Member]
Schedule of Organization, Consolidation and Presentation of Financial Statements Disclosure and Significant Accounting Policies [Line Items]
Estimated useful life of assets, minimum	40 years
Maximum [Member] | Other fixed assets
Schedule of Organization, Consolidation and Presentation of Financial Statements Disclosure and Significant Accounting Policies [Line Items]
Estimated useful life of assets, minimum	30 years

Acquisitions (Details)

Acquisitions (Details) - USD ($) $ in Thousands	Feb. 01, 2019	Aug. 01, 2018	Feb. 01, 2017	Dec. 31, 2017	Dec. 31, 2019	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017	Oct. 31, 2017
Business Acquisition [Line Items]
Assets Acquired and Liabilities Assumed, Cash and Cash Equivalents	$ 38,900		$ 21,600						$ 4,600
Assets Acquired and Liabilities Assumed, Current Assets, Receivables	58,400
Assets Acquired and Liabilities Assumed, Inventory	81,000
Assets Acquired and Liabilities Assumed, Property, Plant, and Equipment	168,200	$ 21,300	438,000						275,000
Assets Acquired and Liabilities Assumed, Noncurrent Assets	231,500
Assets Acquired and Liabilities Assumed, Current Liabilities, Accounts Payable	(47,900)
Assets Acquired and Liabilities Assumed, Deferred Tax Liabilities Noncurrent	(83,000)
Assets Acquired and Liabilities Assumed, Noncurrent Liabilities	(27,800)		(118,000)
Payments to Acquire Businesses, Gross	701,600	54,200	862,100	$ 250,000
Business Acquisition Purchase Price	662,700
Assets Acquired and Liabilities Assumed, Finite-Lived Intangibles	214,600
Acquired Finite-lived Intangible Assets, Weighted Average Useful Life						12 years
Revenues, Excluding Interest and Dividends					$ 340,300	$ 2,124,778	$ 2,195,690
Results of Operations, Income before Income Taxes					5,100	(116,254)	99,371
Goodwill, Impairment Loss						152,700
Purchase Price Canadian Dollars			1,125,000
Business Combination, Consideration Transferred			906,700	363,800
Assets Acquired and Liabilities Assumed, Current Assets		14,400	333,400						5,200
Assets Acquired and Liabilities Assumed, Intangible Assets		9,700	124,300						70,200
Assets Acquired and Liabilities Assumed, Goodwill	$ 282,300	10,800	194,800						13,800
Assets Acquired and Liabilities Assumed, Current Liabilities		$ (2,000)	(87,400)						$ (5,000)
Contingent Consideration, Working Capital Settlement			30,600
Consideration Transferred, Liabilities Incurred			(7,400)
Equity awards issued on PCLI acquisition			$ 6,600					$ 6,600
Acquisition and Integration Costs				$ 27,900	$ 24,200	$ 24,200	$ 3,600	$ 27,900

Leases - Narrative (Details)

Leases - Narrative (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017	Jun. 30, 2020	Mar. 31, 2020
Lessee, Lease, Description [Line Items]
Finance lease term	1 year
Operating lease renewal term	10 years
Lease not yet commenced, term	5 years
Estimated future lease payments	$ 8,479
Rent expense charged to operations		$ 84,100	$ 95,700
HEP
Lessee, Lease, Description [Line Items]
Lease revenue	$ 33,200
Subsequent Event
Lessee, Lease, Description [Line Items]
Estimated future lease payments					$ 400
Subsequent Event | Forecast
Lessee, Lease, Description [Line Items]
Lease not yet commenced, term				15 years
Estimated future lease payments				$ 6,800
Minimum
Lessee, Lease, Description [Line Items]
Operating lease term	1 year
Maximum
Lessee, Lease, Description [Line Items]
Operating lease term	60 years

Leases - Supplemental Balance S

Leases - Supplemental Balance Sheet (Details) - USD ($) $ in Thousands	Dec. 31, 2019	Feb. 01, 2019	Jan. 01, 2019	Dec. 31, 2018
Operating leases:
Operating lease right-of-use assets	$ 467,109			$ 0
Operating lease liabilities	104,415			0
Noncurrent operating lease liabilities	364,420			$ 0
Total operating lease liabilities	468,835	$ 15,600	$ 433,400
Finance leases:
Properties, plants and equipment, at cost	13,406
Accumulated amortization	(6,233)
Properties, plants and equipment, net	7,173
Accrued liabilities	1,567
Other long-term liabilities	5,163
Finance Lease, Liability	$ 6,730
Weighted average remaining lease term (in years)
Operating leases	7 years 2 months 12 days
Finance leases	8 years 1 month 6 days
Weighted average discount rate
Operating leases	4.00%
Finance leases	5.20%

Leases - Components of Lease Ex

Leases - Components of Lease Expense (Details) $ in Thousands	12 Months Ended
	Dec. 31, 2019USD ($)
Leases [Abstract]
Operating lease expense	$ 112,770
Finance lease expense:
Amortization of right-of-use assets	1,543
Interest on lease liabilities	334
Variable lease cost	4,449
Total lease expense	$ 119,096

Leases - Supplemental Cash Flow

Leases - Supplemental Cash Flow Information (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Cash paid for amounts included in the measurement of lease liabilities:
Operating cash flows from operating leases	$ 116,980
Operating cash flows from finance leases	334
Financing cash flows from finance leases	1,551	$ 0	$ 0
Right-of-Use Asset Obtained in Exchange for Operating Lease Liability	$ 121,750

Leases - Operating and Finance

Leases - Operating and Finance Lease Maturities (Details) - USD ($) $ in Thousands	Dec. 31, 2019	Feb. 01, 2019	Jan. 01, 2019	Dec. 31, 2018
Operating
2020	$ 121,511			$ 104,362
2021	102,480			92,491
2022	87,344			84,581
2023	72,751			70,874
2024	49,901			61,063
2025 and thereafter	124,612			88,206
Total lease payments	558,599			501,577
Less imputed interest	89,764
Total operating lease liabilities	468,835	$ 15,600	$ 433,400
Less current obligations	104,415			0
Noncurrent operating lease liabilities	364,420			$ 0
Finance
2020	2,128
2021	1,304
2022	1,056
2023	1,110
2024	626
2025 and thereafter	2,255
Total lease payments	8,479
Less imputed interest	1,749
Finance Lease, Liability	6,730
Less current obligations	1,567
Long-term lease obligations	$ 5,163

Leases - Schedule of Minimum Un

Leases - Schedule of Minimum Undiscounted Lease Payments (Details) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
Lessor, Lease, Description [Line Items]
Lessee, Operating Lease, Liability, Payments, Due Next Twelve Months	$ 121,511	$ 104,362
Lessee, Operating Lease, Liability, Payments, Due Year Two	102,480	92,491
Lessee, Operating Lease, Liability, Payments, Due Year Three	87,344	84,581
Lessee, Operating Lease, Liability, Payments, Due Year Four	72,751	70,874
Lessee, Operating Lease, Liability, Payments, Due Year Five	49,901	61,063
Lessee, Operating Lease, Liability, Payments, Due after Year Five	124,612	88,206
Lessee, Operating Lease, Liability, Payments, Due	558,599	$ 501,577
HEP
Lessor, Lease, Description [Line Items]
2020	18,839
2021	12,794
2022	11,377
2023	11,248
2024	11,248
Thereafter	2,812
Total	$ 68,318

Holly Energy Partners (Narrativ

Holly Energy Partners (Narrative) (Details) $ / shares in Units, $ in Thousands	Feb. 01, 2019USD ($)	Aug. 01, 2018USD ($)	Feb. 06, 2018USD ($)	Jan. 25, 2018$ / sharesshares	Feb. 01, 2017USD ($)	Dec. 31, 2019USD ($)	Dec. 31, 2017USD ($)shares	Dec. 31, 2019USD ($)Customers	Dec. 31, 2018USD ($)	Dec. 31, 2017USD ($)	Dec. 31, 2018USD ($)shares	Oct. 31, 2017USD ($)
Schedule of Equity Method Investments [Line Items]
Number of significant customers								0
Concentration risk, precentage of total revenues								77.00%
Capital Expenditures Incurred but Not yet Paid						$ 65,000
Payments to Acquire Businesses, Gross	$ 701,600	$ 54,200			$ 862,100		$ 250,000
Acquisition, Cash Consideration Paid					906,700		363,800
Business Combination, Step Acquisition, Equity Interest in Acquiree, Fair Value							112,000
Remeasurement Gain on Investment in Equity Company							$ 36,300
Remeasurement gain on pipeline interest acquisition								$ 0	$ 0	$ 36,254
Working Capital Adjustment												$ 1,800
Assets Acquired and Liabilities Assumed, Cash and Cash Equivalents	38,900				21,600							4,600
Assets Acquired and Liabilities Assumed, Current Assets		14,400			333,400							5,200
Assets Acquired and Liabilities Assumed, Property, Plant, and Equipment	168,200	21,300			438,000							275,000
Assets Acquired and Liabilities Assumed, Intangible Assets		9,700			124,300							70,200
Assets Acquired and Liabilities Assumed, Goodwill	$ 282,300	10,800			194,800							13,800
Assets Acquired and Liabilities Assumed, Current Liabilities		$ 2,000			$ 87,400							5,000
Partners' Capital Account, Units, Sold in Private Placement | shares				3,700,000			37,250,000
Limited Partners' Cumulative Cash Distributions												$ 2,500
Shares Issued, Price Per Share | $ / shares				$ 29.73
Proceeds from Issuance of Private Placement			$ 110,000
Common Unit Issuance Program								$ 200,000
Stock Issued During Period, Shares, Period Increase (Decrease) | shares											2,413,153
Proceeds from Issuance of Common Stock											$ 82,300
UNEV Pipeline [Member]
Schedule of Equity Method Investments [Line Items]
Equity Method Investment, Ownership Percentage						75.00%		75.00%
Frontier Pipeline [Member]
Schedule of Equity Method Investments [Line Items]
Equity Method Investment, Ownership Percentage						50.00%		50.00%
HEP
Schedule of Equity Method Investments [Line Items]
Percentage of ownership in variable interest entity								57.00%
Number of significant customers | Customers								2
Long-term Purchase Commitment, Amount								$ 348,100

Revenues from Contracts with _3

Revenues from Contracts with Customers (Details) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2019	Sep. 30, 2019	Jun. 30, 2019	Mar. 31, 2019	Dec. 31, 2018	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Disaggregation of Revenue [Line Items]
Revenues from external customers	$ 4,381,888	$ 4,424,828	$ 4,782,615	$ 3,897,247	$ 4,344,204	$ 4,770,799	$ 4,471,236	$ 4,128,427	$ 17,486,578	$ 17,714,666	$ 14,251,299
Contract with Customer, Liability	$ 4,652				$ 132				4,652	132	179
Contract With Customer, Liability, Increase									26,751	6,748
Contract with Customer, Liability, Revenue Recognized									(28,694)	(6,795)
North America Mid-Continent Market
Disaggregation of Revenue [Line Items]
Revenues from external customers									8,424,191	8,427,200	7,099,754
North America Southwest
Disaggregation of Revenue [Line Items]
Revenues from external customers									3,621,273	3,772,278	2,952,224
North America Rocky Mountains
Disaggregation of Revenue [Line Items]
Revenues from external customers									2,208,541	2,476,044	2,055,221
Northeast
Disaggregation of Revenue [Line Items]
Revenues from external customers									578,932	339,407	259,840
CANADA
Disaggregation of Revenue [Line Items]
Revenues from external customers									721,169	732,321	673,842
Europe, Asia and Latin America
Disaggregation of Revenue [Line Items]
Revenues from external customers									288,906	201,497	174,393
Transportation Fuels
Disaggregation of Revenue [Line Items]
Revenues from external customers									12,952,899	13,326,654	11,056,038
Specialty Lubricant Products
Disaggregation of Revenue [Line Items]
Revenues from external customers									1,864,450	1,636,859	1,415,842
Asphalt, Fuel, Oil And Other Products
Disaggregation of Revenue [Line Items]
Revenues from external customers									1,025,663	985,234	743,394
Refined Product
Disaggregation of Revenue [Line Items]
Revenues from external customers									15,843,012	15,948,747	13,215,274
Crude Oil
Disaggregation of Revenue [Line Items]
Revenues from external customers									1,470,148	1,597,321	891,756
Transportation And Logistic Services
Disaggregation of Revenue [Line Items]
Revenues from external customers									121,027	108,412	77,225
Other Revenues, Products Of Petroleum And Coal
Disaggregation of Revenue [Line Items]
Revenues from external customers									52,391	60,186	67,044
Other Segments [Member] | Asphalt, Fuel, Oil And Other Products
Disaggregation of Revenue [Line Items]
Revenues from external customers									$ 216,800	$ 162,600	$ 178,200

Revenues from Contracts with _4

Revenues from Contracts with Customers Significant Customers (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Significant Customers [Abstract]
Revenues	$ 17,486,578	$ 17,714,666	$ 14,251,299

Revenues from Contracts with _5

Revenues from Contracts with Customers Schedule of Revenue by Major Customers, by Reporting Segments (Details) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2019	Sep. 30, 2019	Jun. 30, 2019	Mar. 31, 2019	Dec. 31, 2018	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017	Feb. 01, 2019
Revenue, Major Customer [Line Items]
Contract with Customer, Liability	$ 4,652				$ 132				$ 4,652	$ 132	$ 179
Revenues from external customers	$ 4,381,888	$ 4,424,828	$ 4,782,615	$ 3,897,247	$ 4,344,204	$ 4,770,799	$ 4,471,236	$ 4,128,427	17,486,578	17,714,666	14,251,299
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Liabilities, Other												$ 6,463
Contract With Customer, Liability, Increase									26,751	6,748
Contract with Customer, Liability, Revenue Recognized									(28,694)	(6,795)
CANADA
Revenue, Major Customer [Line Items]
Revenues from external customers									721,169	732,321	673,842
Asphalt, Fuel, Oil And Other Products
Revenue, Major Customer [Line Items]
Revenues from external customers									1,025,663	985,234	743,394
Refining Segment
Revenue, Major Customer [Line Items]
Revenues from external customers									15,284,110	15,806,304	12,579,672
Refining Segment | Asphalt, Fuel, Oil And Other Products
Revenue, Major Customer [Line Items]
Revenues from external customers									808,900	822,600	565,200
Other Segments [Member] | Asphalt, Fuel, Oil And Other Products
Revenue, Major Customer [Line Items]
Revenues from external customers									$ 216,800	$ 162,600	$ 178,200

Revenues from Contracts with _6

Revenues from Contracts with Customers Performance Obligations (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Feb. 01, 2019	Dec. 31, 2017
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Contract with Customer, Liability	$ 4,652	$ 132		$ 179
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Liabilities, Other			$ 6,463
Contract With Customer, Liability, Increase	26,751	6,748
Contract with Customer, Liability, Revenue Recognized	(28,694)	$ (6,795)
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2020-01-01
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Revenue, Remaining Performance Obligation, Amount	$ 21,051
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Period	1 year
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2020-01-01 | Third-Party Customer [Member]
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Revenue, Remaining Performance Obligation, Amount	$ 29,536
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Period	1 year
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2021-01-01
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Revenue, Remaining Performance Obligation, Amount	$ 14,622
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Period	1 year
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2021-01-01 | Third-Party Customer [Member]
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Revenue, Remaining Performance Obligation, Amount	$ 22,822
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Period	1 year
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2022-01-01
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Revenue, Remaining Performance Obligation, Amount	$ 12,775
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Period	1 year
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2022-01-01 | Third-Party Customer [Member]
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Revenue, Remaining Performance Obligation, Amount	$ 13,267
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Period	1 year
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2023-01-01
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Revenue, Remaining Performance Obligation, Amount	$ 24,465
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2023-01-01 | Third-Party Customer [Member]
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Revenue, Remaining Performance Obligation, Amount	25,308
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: (nil)
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Revenue, Remaining Performance Obligation, Amount	72,913
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: (nil) | Third-Party Customer [Member]
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Revenue, Remaining Performance Obligation, Amount	$ 90,933

Fair Value Measurements (Estima

Fair Value Measurements (Estimated Fair Values Of Debt Instruments) (Details) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
Carrying Value [Member]
Debt Instrument [Line Items]
Financial Instruments Assets	$ 17,588	$ 40,280
Financial Instruments Liabilities	14,215	6,177
Level 1
Debt Instrument [Line Items]
Financial Instruments Assets	0	2,473
Financial Instruments Liabilities	2,578	0
Level 2
Debt Instrument [Line Items]
Financial Instruments Assets	17,588	37,807
Financial Instruments Liabilities	11,637	6,177
NYMEX futures contracts | Carrying Value [Member]
Debt Instrument [Line Items]
Financial Instruments Assets		2,473
Financial Instruments Liabilities	2,578
NYMEX futures contracts | Level 1
Debt Instrument [Line Items]
Financial Instruments Assets		2,473
NYMEX futures contracts | Level 2
Debt Instrument [Line Items]
Financial Instruments Assets		0
Commodity price swaps | Carrying Value [Member]
Debt Instrument [Line Items]
Financial Instruments Assets	13,455	10,817
Financial Instruments Liabilities	1,230	956
Commodity price swaps | Level 2
Debt Instrument [Line Items]
Financial Instruments Assets	13,455	10,817
Financial Instruments Liabilities	1,230	956
Commodity forward contracts | Carrying Value [Member]
Debt Instrument [Line Items]
Financial Instruments Assets	4,133	1,034
Financial Instruments Liabilities	3,685	1,137
Commodity forward contracts | Level 2
Debt Instrument [Line Items]
Financial Instruments Assets	4,133	1,034
Financial Instruments Liabilities	3,685	1,137
Foreign currency forward contracts | Carrying Value [Member]
Debt Instrument [Line Items]
Financial Instruments Assets		25,956
Financial Instruments Liabilities	6,722
Foreign currency forward contracts | Level 2
Debt Instrument [Line Items]
Financial Instruments Assets		25,956
Financial Instruments Liabilities	$ 6,722
RINs credit obligations | Carrying Value [Member]
Debt Instrument [Line Items]
Financial Instruments Liabilities		4,084
RINs credit obligations | Level 2
Debt Instrument [Line Items]
Financial Instruments Liabilities		$ 4,084

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								12 Months Ended
	Dec. 31, 2019	Sep. 30, 2019	Jun. 30, 2019	Mar. 31, 2019	Dec. 31, 2018	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Earnings Per Share [Abstract]
Net income attributable to HollyFrontier stockholders	$ 60,605	$ 261,813	$ 196,915	$ 253,055	$ 141,896	$ 342,466	$ 345,507	$ 268,091	$ 772,388	$ 1,097,960	$ 805,395
Participating securities' (restricted stock) share in earnings									1,034	3,714	5,047
Net income attributable to common shares									$ 771,354	$ 1,094,246	$ 800,348
Average number of shares of common stock outstanding	161,398	163,676	169,356	170,851	172,485	175,097	175,899	176,617	166,287	175,009	176,174
Effect of dilutive variable restricted shares and performance share units									1,098	1,652	1,022
Average number of shares of common stock outstanding assuming dilution	162,898	165,011	170,547	172,239	174,259	176,927	177,586	177,954	167,385	176,661	177,196
Basic earnings per share	$ 0.38	$ 1.60	$ 1.16	$ 1.48	$ 0.82	$ 1.95	$ 1.96	$ 1.51	$ 4.64	$ 6.25	$ 4.54
Diluted earnings per share	$ 0.37	$ 1.58	$ 1.15	$ 1.47	$ 0.81	$ 1.93	$ 1.94	$ 1.50	$ 4.61	$ 6.19	$ 4.52
Excludes anti-dilutive restricted and performance share units									302	238	543

Stock-Based Compensation (Narra

Stock-Based Compensation (Narrative) (Details) - USD ($) $ / shares in Units, $ in Millions	3 Months Ended	12 Months Ended
	Mar. 31, 2020	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Compensation cost attributable to share-based compensation plans		$ 41.5	$ 39	$ 39.8
Restricted Stock [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting (transfer/conversion to common stock)		739,613
Weighted Average Grant Date Fair Value, Non-vested shares		$ 53.30	$ 46.81
Weighted average grant date fair value		41.74
Granted, Weighted Average Grant Date Fair Value		$ 52.62
Grant date fair value of restricted stock vested		$ 30.9	$ 30	$ 24.9
Total unrecognized compensation cost related to non-vested grants		$ 36.2
Total unrecognized compensation cost, weighted-average period of recognition, years		1 year 6 months
Restricted Stock Units (RSUs) [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Weighted average grant date fair value			$ 64.96	$ 35.02
Performance Shares [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting (transfer/conversion to common stock)		427,715
Weighted Average Grant Date Fair Value, Non-vested shares		$ 58.50
Grant date fair value of restricted stock vested			$ 8.8	$ 6.6
Total unrecognized compensation cost related to non-vested grants		$ 11.7
Total unrecognized compensation cost, weighted-average period of recognition, years		2 years 1 month 6 days
Performance share units, vested in period, percentage payout		200.00%
Share-based Payment Award, Shares Issued in Period		592,602
Common stock issued, fair value		$ 7.3
Minimum [Member] | Performance Shares [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Percentage Of Share Units Awarded Ultimately Issued		0.00%
Maximum [Member] | Restricted Stock [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock vesting period, years		3 years
Maximum [Member] | Performance Shares [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock vesting period, years		3 years
Percentage Of Share Units Awarded Ultimately Issued		200.00%
HEP
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Compensation cost attributable to share-based compensation plans		$ 2.5	$ 3.2	$ 2.5
Subsequent Event [Member] | Performance Shares [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Grant date fair value of restricted stock vested	$ 8.9
Share-based Payment Award, Shares Issued in Period	131,414

Stock-Based Compensation (Summa

Stock-Based Compensation (Summary Of Restricted Stock Activity) (Details) - USD ($) $ / shares in Units, $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based Payment Arrangement, Cash Used to Settle Award	$ 1,700	$ 100	$ 0
Share-based Compensation Arrangement by Share-based Payment Award, Shares Purchased for Award	32,648	2,481
Document Period End Date	Dec. 31, 2019
Restricted Stock [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Restricted Stock, Nonvested [Roll Forward]
Outstanding at January 1, 2019 (non-vested)	1,196,914
Granted	661,329
Vesting and transfer of ownership to recipients	(739,613)
Forfeited	(60,234)
Converted from Performance Shares	$ 35.80
Outstanding at December 31, 2019 (non-vested)	1,101,781	1,196,914
Outstanding at January 1, 2019 (non-vested), Weighted Average Grant Date Fair Value	$ 46.81
Vesting and transfer of ownership to recipients, Weighted Average Grant Date Fair Value	41.74
Forfeited, Weighted Average Grant Date Fair Value	$ 46.30
Converted from Performance Shares	(43,385)
Outstanding at December 31, 2019 (non-vested), Weighted Average Grant Date Fair Value	$ 53.30	$ 46.81
Outstanding at December 31, 2019 (non-vested), Aggregate Intrinsic Value	$ 55,871
Grant date fair value of restricted stock vested	$ 30,900	$ 30,000	$ 24,900
Restricted Stock Units (RSUs) [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Restricted Stock, Nonvested [Roll Forward]
Vesting and transfer of ownership to recipients, Weighted Average Grant Date Fair Value		$ 64.96	$ 35.02

Stock-Based Compensation (Sum_2

Stock-Based Compensation (Summary Of Performance Share Unit Activity) (Details) - USD ($) $ in Thousands	3 Months Ended									12 Months Ended
	Mar. 31, 2020	Dec. 31, 2019	Sep. 30, 2019	Jun. 30, 2019	Mar. 31, 2019	Dec. 31, 2018	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Share-based Compensation Arrangement by Share-based Payment Award, Performance Share Units, Nonvested [Roll Forward]
Revenues from external customers		$ 4,381,888	$ 4,424,828	$ 4,782,615	$ 3,897,247	$ 4,344,204	$ 4,770,799	$ 4,471,236	$ 4,128,427	$ 17,486,578	$ 17,714,666	$ 14,251,299
Performance Shares [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Amount		$ 11,700								$ 11,700
Share-based Payment Award, Shares Issued in Period										592,602
Share-based Payment Arrangement										$ 7,300
Fair Value of performance shares vested											$ 8,800	$ 6,600
Share-based Compensation Arrangement by Share-based Payment Award, Performance Share Units, Nonvested [Roll Forward]
Outstanding at January 1, 2019 (non-vested)	375,588				662,431					662,431
Granted										177,428
Vesting and transfer of ownership to recipients										(427,715)
Forfeited										(11,046)
Converted to Restricted Stock Units										(25,510)
Outstanding at December 31, 2019 (non-vested)		375,588				662,431				375,588	662,431
Subsequent Event [Member] | Performance Shares [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based Payment Award, Shares Issued in Period	131,414
Fair Value of performance shares vested	$ 8,900

Inventories (Inventory Componen

Inventories (Inventory Components) (Details) - USD ($) $ in Thousands		Dec. 31, 2019	Dec. 31, 2018
Inventory, Net [Abstract]
Crude oil		$ 489,169	$ 503,705
Other raw materials and unfinished products	[1]	394,045	360,124
Finished products	[2]	639,938	662,713
Lower of cost or market reserve		(240,363)	(360,138)
Process chemicals	[3]	36,786	31,413
Repairs and maintenance supplies and other (4)	[4]	154,627	156,562
Total inventory		$ 1,474,202	$ 1,354,379
[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.
[4]	(4) Includes RINs

Inventories (Narrative) (Detail

Inventories (Narrative) (Details) - USD ($) $ in Thousands	3 Months Ended							12 Months Ended
	Dec. 31, 2019	Sep. 30, 2019	Dec. 31, 2018	Jun. 30, 2018	Mar. 31, 2018	Dec. 31, 2017	Jun. 30, 2017	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Inventory, Net [Abstract]
Lower of Cost or Market Inventory Reserve	$ 240,400		$ 360,100					$ 240,400	$ 360,100
Lower of cost or market inventory valuation adjustment	$ 30,700	$ 34,100	$ (329,200)	$ 106,900	$ 103,800			$ (119,775)	$ 136,305	$ (108,685)
Cost of Sales Effect of Renewable Fuels Standard		$ 36,600		$ 25,300	$ 33,800	$ 27,300	$ 30,500			$ 37,900

Properties, Plants and Equipm_3

Properties, Plants and Equipment (Components Of Property, Plants And Equipment) (Details) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
Property, Plant and Equipment [Line Items]
Properties, plants and equipment, at cost	$ 7,237,297	$ 6,780,980
Accumulated depreciation	(2,414,585)	(2,098,446)
Properties, plants and equipment, net	4,822,712	4,682,534
Land, buildings and improvements
Property, Plant and Equipment [Line Items]
Properties, plants and equipment, at cost	447,547	455,508
Refining facilities
Property, Plant and Equipment [Line Items]
Properties, plants and equipment, at cost	4,258,764	4,034,546
Pipelines and terminals
Property, Plant and Equipment [Line Items]
Properties, plants and equipment, at cost	1,775,657	1,729,994
Transportation vehicles
Property, Plant and Equipment [Line Items]
Properties, plants and equipment, at cost	27,214	20,311
Other fixed assets
Property, Plant and Equipment [Line Items]
Properties, plants and equipment, at cost	540,953	296,843
Construction in progress
Property, Plant and Equipment [Line Items]
Properties, plants and equipment, at cost	$ 187,162	$ 243,778

Properties, Plants and Equipm_4

Properties, Plants and Equipment (Narrative) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Property, Plant and Equipment [Line Items]
Capitalized interest	$ 2.5	$ 4.8	$ 5
Depreciation expense	$ 334.2	$ 309	$ 286.5

Goodwill and Long-lived Asset_3

Goodwill and Long-lived Asset Impairment (Schedule Of Changes By Segment To The Carrying Amount Of Goodwill) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017	Aug. 01, 2018
Goodwill [Line Items]
Impairment of Long-Lived Assets Held-for-use		$ 19,200
Goodwill, Gross	$ 2,835,937	2,555,753
Goodwill	2,373,907	2,246,435
Goodwill and Intangible Asset Impairment	(152,712)	0	$ (19,247)
Goodwill, Other Increase (Decrease)	(1,356)
Goodwill, Impaired, Accumulated Impairment Loss	(462,030)	(309,318)
Asset Impairment Charges		(23,200)
Amortization of Intangible Assets	33,800	16,600	9,100
Refining Segment
Goodwill [Line Items]
Goodwill, Gross	2,042,790	2,042,790
Goodwill	1,733,472	1,733,472
Goodwill and Intangible Asset Impairment	0		(19,247)
Goodwill, Impaired, Accumulated Impairment Loss	(309,318)	(309,318)
Lubricants and Specialty Products
Goodwill [Line Items]
Goodwill, Gross	480,274	198,734
Goodwill	327,562	198,734		$ 282,273
Goodwill and Intangible Asset Impairment	(152,712)		0
Goodwill, Foreign Currency Translation Gain (Loss)	(733)
Goodwill, Impaired, Accumulated Impairment Loss	152,712	0
HEP
Goodwill [Line Items]
Goodwill, Gross	312,873	314,229
Goodwill	312,873	314,229
Goodwill and Intangible Asset Impairment	0		$ 0
Goodwill, Impaired, Accumulated Impairment Loss	0	0
Business Combination Acquiree [Member]
Goodwill [Line Items]
Goodwill	$ 282,273
Property, Plant and Equipment [Member]
Goodwill [Line Items]
Asset Impairment Charges		$ (4,000)

Goodwill and Long-lived Asset_4

Goodwill and Long-lived Asset Impairment Intangible Assets (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Finite-Lived Intangible Assets [Line Items]
Goodwill and Intangible Asset Impairment	$ 152,712	$ 0	$ 19,247
Estimated Amortization Expense 2020	33,774
Estimated Amortization Expense 2021	33,774
Estimated Amortization Expense 2022	33,774
Estimated Amortization Expense 2023	33,774
Estimated Amortization Expense 2024	$ 33,774
Finite-Lived Intangible Assets, Useful Lives	30 years
Intangible Assets	$ 460,275	235,200
Accumulated Amortization	(86,768)	(52,834)
Total Intangible Assets	$ 373,507	182,366
Minimum [Member]
Finite-Lived Intangible Assets [Line Items]
Finite-Lived Intangible Assets, Useful Lives	10 years
Maximum [Member]
Finite-Lived Intangible Assets [Line Items]
Finite-Lived Intangible Assets, Useful Lives	20 years
Customer Relationships [Member]
Finite-Lived Intangible Assets [Line Items]
Intangible Assets	$ 245,479	91,941
Transportation Agreements Type [Domain]
Finite-Lived Intangible Assets [Line Items]
Intangible Assets	59,933	59,933
Trademarks [Member]
Finite-Lived Intangible Assets [Line Items]
Intangible Assets	$ 154,863	$ 83,326

Environmental (Details)

Environmental (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017	Feb. 01, 2019
Loss Contingencies [Line Items]
Environmental remediation costs	$ 11.2	$ 14.8	$ 13.1
Accrued environmental liability	$ 117.7	110.2
Length of Time for Environmental Remediation	30 years
Business Combination, Liabilities Arising from Contingencies, Amount Recognized				$ 4.9
Other Noncurrent Liabilities [Member]
Loss Contingencies [Line Items]
Accrued environmental liability	$ 95.6	$ 93.8

Debt (Narrative) (Details)

Debt (Narrative) (Details) - USD ($)	3 Months Ended			12 Months Ended
	Mar. 31, 2020	Dec. 31, 2019	Mar. 31, 2017	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017	Feb. 04, 2020	Sep. 30, 2017	Jan. 31, 2017	Sep. 30, 2016
Debt Instrument [Line Items]
Maximum borrowing capacity under revolving credit agreement		$ 1,350,000,000		$ 1,350,000,000
Letters of Credit Outstanding, Amount		4,900,000		4,900,000
Effective interest rate on debt			6.50%		4.24%
Senior Notes		1,000,000,000		1,000,000,000
Sale Leaseback Transaction, Net Proceeds, Financing Activities		32,500,000
Capital Lease Obligations		40,000,000		40,000,000
Loss on early extinguishment of debt				0	$ 0	$ (12,225,000)
HEP
Debt Instrument [Line Items]
Maximum borrowing capacity under revolving credit agreement		1,400,000,000		1,400,000,000
Proceeds from Lines of Credit				365,500,000
Repayments of Lines of Credit				323,000,000
Borrowings outstanding under revolving credit agreement		965,500,000		965,500,000	923,000,000
Senior notes		522,045,000		522,045,000	488,310,000
Letter of Credit [Member] | HEP
Debt Instrument [Line Items]
Line of Credit Facility, Accordion Feature		300,000,000		300,000,000
Line of Credit Facility, Capacity Available for Trade Purchases		50,000,000		50,000,000
Five Point Eight Seven Five Percentage Senior Notes Due Two Thousand Twenty-Six [Member] [Member]
Debt Instrument [Line Items]
Senior notes		1,127,610,000		1,127,610,000	1,019,160,000
Senior Notes, Noncurrent		1,000,000,000		1,000,000,000	1,000,000,000
Debt Instrument, Unamortized Discount		$ 6,391,000		$ 6,391,000	7,360,000
6.5% Senior Notes Due 2020 | HEP
Debt Instrument [Line Items]
Stated interest rate, senior notes		6.50%		6.50%
Loss on early extinguishment of debt			$ 12,200,000
Redemption premium on early extinguishment of debt			9,800,000
Senior Notes			$ 300,000,000
Senior Notes Aggregate Redemption Amount									$ 309,800,000
Debt Instrument, Unamortized Discount									$ 2,400,000
Six Percent Senior Notes Due Two Thousand Twenty Four [Member]
Debt Instrument [Line Items]
Effective interest rate on debt		6.00%		6.00%
Stated interest rate, senior notes		6.00%		6.00%
Six Percent Senior Notes Due Two Thousand Twenty Four [Member] | HEP
Debt Instrument [Line Items]
Stated interest rate, senior notes		6.00%		6.00%
Senior Notes, Noncurrent		$ 500,000,000		$ 500,000,000	500,000,000			$ 100,000,000		$ 400,000,000
Debt Instrument, Unamortized Discount		$ 3,469,000		$ 3,469,000	$ 4,100,000
Alternative A [Member] | Minimum [Member]
Debt Instrument [Line Items]
Line of Credit Facility, Interest Rate During Period				0.125%
Alternative A [Member] | Maximum [Member]
Debt Instrument [Line Items]
Line of Credit Facility, Interest Rate During Period				1.00%
Alternative B [Member] | Minimum [Member]
Debt Instrument [Line Items]
Line of Credit Facility, Interest Rate During Period				1.125%
Alternative B [Member] | Maximum [Member]
Debt Instrument [Line Items]
Line of Credit Facility, Interest Rate During Period				2.00%
Alternative C [Member] | Minimum [Member]
Debt Instrument [Line Items]
Line of Credit Facility, Interest Rate During Period				1.125%
Alternative C [Member] | Maximum [Member]
Debt Instrument [Line Items]
Line of Credit Facility, Interest Rate During Period				2.00%
Subsequent Event [Member]
Debt Instrument [Line Items]
Extinguishment of Debt, Amount	$ 522,500,000
Subsequent Event [Member] | Five Percent Senior Notes Due Two Thousand Twenty Eight [Member]
Debt Instrument [Line Items]
Effective interest rate on debt							5.00%
Debt Instrument, Face Amount							$ 500,000,000

Debt (Carrying Amounts Of Long-

Debt (Carrying Amounts Of Long-Term Debt) (Details) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018	Sep. 30, 2017	Jan. 31, 2017	Sep. 30, 2016
Debt Instrument [Line Items]
Total	$ 2,465,500
Long-term Debt and Lease Obligation (HEP: $1,462,031 and $1,418,900, respectively)	2,455,640	$ 2,411,540
HEP
Debt Instrument [Line Items]
Borrowings outstanding under revolving credit agreement	965,500	923,000
Long-term Debt and Lease Obligation (HEP: $1,462,031 and $1,418,900, respectively)	1,462,031	1,418,900
Five Point Eight Seven Five Percentage Senior Notes Due Two Thousand Twenty-Six [Member] [Member]
Debt Instrument [Line Items]
Senior Notes, Noncurrent	1,000,000	1,000,000
Debt Instrument, Unamortized Discount	(6,391)	(7,360)
Total	$ 993,609	992,640
Six Percent Senior Notes Due Two Thousand Twenty Four [Member]
Debt Instrument [Line Items]
Debt Instrument, Interest Rate, Stated Percentage	6.00%
Six Percent Senior Notes Due Two Thousand Twenty Four [Member] | HEP
Debt Instrument [Line Items]
Debt Instrument, Interest Rate, Stated Percentage	6.00%
Senior Notes, Noncurrent	$ 500,000	500,000	$ 100,000		$ 400,000
Debt Instrument, Unamortized Discount	(3,469)	(4,100)
Total	$ 496,531	$ 495,900
6.5% Senior Notes Due 2020 | HEP
Debt Instrument [Line Items]
Debt Instrument, Interest Rate, Stated Percentage	6.50%
Debt Instrument, Unamortized Discount				$ (2,400)

Debt (Principal Maturities Of L

Debt (Principal Maturities Of Long-Term Debt) (Details) $ in Thousands	Dec. 31, 2019USD ($)
Debt Disclosure [Abstract]
Next Twelve Months	$ 0
Year Two	0
Year Three	965,500
Year Four	0
Year Five	500,000
Thereafter	1,000,000
Total	$ 2,465,500

Derivative Instruments and He_3

Derivative Instruments and Hedging Activities Notional Contracts by Derivative Type (Details) - 12 months ended Dec. 31, 2019	USD ($)MMBTUbbl	XPT ( )
Natural Gas Liquids
economic hedges by derivative type [Line Items]
Derivative, Nonmonetary Notional Amount, Energy Measure | MMBTU	3,600,000
Swap [Member]
economic hedges by derivative type [Line Items]
Derivative, Nonmonetary Notional Amount, Volume	4,758,000
Designated as Hedging Instrument [Member] | Maturing in Next Twelve Months [Member] | Natural Gas Liquids
economic hedges by derivative type [Line Items]
Derivative, Nonmonetary Notional Amount, Energy Measure | MMBTU	1,800,000
Designated as Hedging Instrument [Member] | Maturing in Next Twelve Months [Member] | Swap [Member]
economic hedges by derivative type [Line Items]
Derivative, Nonmonetary Notional Amount, Volume	4,758,000
Designated as Hedging Instrument [Member] | Maturing in Year Two [Member] | Natural Gas Liquids
economic hedges by derivative type [Line Items]
Derivative, Nonmonetary Notional Amount, Energy Measure | MMBTU	1,800,000
Not Designated as Hedging Instrument [Member] | Swap [Member]
economic hedges by derivative type [Line Items]
Derivative, Nonmonetary Notional Amount, Volume	1,464,000
Not Designated as Hedging Instrument [Member] | NYMEX WTI Short
economic hedges by derivative type [Line Items]
Derivative, Nonmonetary Notional Amount, Volume	1,365,000
Not Designated as Hedging Instrument [Member] | Commodity forward contracts
economic hedges by derivative type [Line Items]
Derivative, Nonmonetary Notional Amount, Volume	1,251,200
Not Designated as Hedging Instrument [Member] | Foreign currency forward contracts
economic hedges by derivative type [Line Items]
Derivative, Notional Amount | $	$ 434,340,348
Not Designated as Hedging Instrument [Member] | Commodity price swaps
economic hedges by derivative type [Line Items]
Derivative, Notional Amount |		41,147
Not Designated as Hedging Instrument [Member] | Maturing in Next Twelve Months [Member] | Swap [Member]
economic hedges by derivative type [Line Items]
Derivative, Nonmonetary Notional Amount, Volume	1,464,000
Not Designated as Hedging Instrument [Member] | Maturing in Next Twelve Months [Member] | NYMEX WTI Short
economic hedges by derivative type [Line Items]
Derivative, Nonmonetary Notional Amount, Volume	1,365,000
Not Designated as Hedging Instrument [Member] | Maturing in Next Twelve Months [Member] | Commodity forward contracts
economic hedges by derivative type [Line Items]
Derivative, Nonmonetary Notional Amount, Volume	1,251,200
Not Designated as Hedging Instrument [Member] | Maturing in Next Twelve Months [Member] | Foreign currency forward contracts
economic hedges by derivative type [Line Items]
Derivative, Notional Amount | $	$ 434,340,348
Not Designated as Hedging Instrument [Member] | Maturing in Year Two [Member] | Commodity price swaps
economic hedges by derivative type [Line Items]
Derivative, Notional Amount |		41,147

Derivative Instruments and He_4

Derivative Instruments and Hedging Activities Location of Gain Loss in Income Statement (Details) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2019	Sep. 30, 2019	Jun. 30, 2019	Mar. 31, 2019	Dec. 31, 2018	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Derivative Instruments, Gain (Loss) [Line Items]
Economic Hedges, Gain (Loss)									$ (32,332)	$ 58,291	$ 5,521
Unrealized Gain (Loss) on Cash Flow Hedging Instruments									(5,349)	11,221	14,447
Sales and other revenues	$ 4,381,888	$ 4,424,828	$ 4,782,615	$ 3,897,247	$ 4,344,204	$ 4,770,799	$ 4,471,236	$ 4,128,427	17,486,578	17,714,666	14,251,299
Cost of products sold									13,918,384	13,940,782	11,467,873
Operating Expenses									1,394,052	1,285,838	1,296,669
Commodity price swaps
Derivative Instruments, Gain (Loss) [Line Items]
Unrealized Gain (Loss) on Cash Flow Hedging Instruments									(5,349)	11,221	14,538
Cost of products sold
Derivative Instruments, Gain (Loss) [Line Items]
Economic Hedges, Gain (Loss)									(8,475)	16,655	(12,327)
Operating expenses
Derivative Instruments, Gain (Loss) [Line Items]
Economic Hedges, Gain (Loss)									0	0	(6,697)
Interest Expense
Derivative Instruments, Gain (Loss) [Line Items]
Economic Hedges, Gain (Loss)									(6,427)	(198)	0
Foreign Currency Gain (Loss)
Derivative Instruments, Gain (Loss) [Line Items]
Economic Hedges, Gain (Loss)									(17,430)	41,834	0
Other Expense
Derivative Instruments, Gain (Loss) [Line Items]
Economic Hedges, Gain (Loss)									0	0	24,545
Interest Rate Contract
Derivative Instruments, Gain (Loss) [Line Items]
Unrealized Gain (Loss) on Cash Flow Hedging Instruments									0	0	(91)
Reclassification out of Accumulated Other Comprehensive Income [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Other Cost and Expense, Operating									19,713	(6,055)	(11,528)
Reclassification out of Accumulated Other Comprehensive Income [Member] | Commodity price swaps
Derivative Instruments, Gain (Loss) [Line Items]
Sales and other revenues									(1,799)	(5,093)	7,836
Cost of products sold									22,876	0	(299)
Operating Expenses									(1,364)	(962)	(19,244)
Reclassification out of Accumulated Other Comprehensive Income [Member] | Interest rate swap
Derivative Instruments, Gain (Loss) [Line Items]
Interest Expense, Other									$ 0	$ 0	$ 179

Derivative Instruments and He_5

Derivative Instruments and Hedging Activities (Summary Of Balance Sheet Locations And Related Fair Values Of Outstanding Derivative Instruments) (Details) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
Derivatives, Fair Value [Line Items]
Derivative, Fair Value, Net	$ 17,588	$ 40,280
Derivative Liability, Fair Value, Net Liability	14,215	2,093
Prepayments and other
Derivatives, Fair Value [Line Items]
Derivative, Fair Value, Net	17,588	37,982
Accrued Liabilities [Member]
Derivatives, Fair Value [Line Items]
Derivative Liability, Fair Value, Net Liability	12,985	1,137
Other Intangible Assets [Member]
Derivatives, Fair Value [Line Items]
Derivative, Fair Value, Net	0	2,298
Other Long Term Liabilities [Member]
Derivatives, Fair Value [Line Items]
Derivative Liability, Fair Value, Net Liability	1,230	956
Designated as Hedging Instrument [Member]
Derivatives, Fair Value [Line Items]
Derivative Asset, Fair Value, Gross Asset	7,526	11,790
Derivative Asset, Fair Value, Gross Liability	(1,784)	(973)
Derivative, Fair Value, Net	5,742	10,817
Derivative Liability, Fair Value, Gross Liability	1,230	1,755
Derivative Liability, Fair Value, Gross Asset	0	(799)
Derivative Liability, Fair Value, Net Liability	1,230	956
Designated as Hedging Instrument [Member] | Commodity price swaps
Derivatives, Fair Value [Line Items]
Derivative Asset, Fair Value, Gross Asset	7,526	11,790
Derivative Asset, Fair Value, Gross Liability	(1,784)	(973)
Derivative, Fair Value, Net	5,742	10,817
Derivative Liability, Fair Value, Gross Liability	1,230	1,755
Derivative Liability, Fair Value, Gross Asset	0	(799)
Derivative Liability, Fair Value, Net Liability	1,230	956
Not Designated as Hedging Instrument [Member]
Derivatives, Fair Value [Line Items]
Derivative Asset, Fair Value, Gross Asset	11,846	29,463
Derivative Asset, Fair Value, Gross Liability	0	0
Derivative, Fair Value, Net	11,846	29,463
Derivative Liability, Fair Value, Gross Liability	12,985	1,137
Derivative Liability, Fair Value, Gross Asset	0	0
Derivative Liability, Fair Value, Net Liability	12,985	1,137
Not Designated as Hedging Instrument [Member] | Commodity price swaps
Derivatives, Fair Value [Line Items]
Derivative Asset, Fair Value, Gross Asset	7,713
Derivative Asset, Fair Value, Gross Liability	0
Derivative, Fair Value, Net	7,713
Not Designated as Hedging Instrument [Member] | Commodity forward contracts
Derivatives, Fair Value [Line Items]
Derivative Asset, Fair Value, Gross Asset	4,133	1,034
Derivative Asset, Fair Value, Gross Liability	0	0
Derivative, Fair Value, Net	4,133	1,034
Derivative Liability, Fair Value, Gross Liability	3,685	1,137
Derivative Liability, Fair Value, Gross Asset	0	0
Derivative Liability, Fair Value, Net Liability	3,685	1,137
Not Designated as Hedging Instrument [Member] | Foreign Exchange Contract [Member]
Derivatives, Fair Value [Line Items]
Derivative Asset, Fair Value, Gross Asset	0
Derivative Asset, Fair Value, Gross Liability	0
Derivative, Fair Value, Net	0
Not Designated as Hedging Instrument [Member] | Nymex Futures Contracts [Member]
Derivatives, Fair Value [Line Items]
Derivative Asset, Fair Value, Gross Asset	0	2,473
Derivative Asset, Fair Value, Gross Liability	0	0
Derivative, Fair Value, Net	0	2,473
Derivative Liability, Fair Value, Gross Liability	2,578	0
Derivative Liability, Fair Value, Gross Asset	0	0
Derivative Liability, Fair Value, Net Liability	2,578	0
Not Designated as Hedging Instrument [Member] | Foreign currency forward contracts
Derivatives, Fair Value [Line Items]
Derivative Asset, Fair Value, Gross Asset		25,956
Derivative Asset, Fair Value, Gross Liability		0
Derivative, Fair Value, Net		25,956
Derivative Liability, Fair Value, Gross Liability	6,722	0
Derivative Liability, Fair Value, Gross Asset	0	0
Derivative Liability, Fair Value, Net Liability	$ 6,722	$ 0

Derivative Instruments and He_6

Derivative Instruments and Hedging Activities (Narrative) (Details) $ in Millions	12 Months Ended
	Dec. 31, 2019USD ($)
Derivative [Line Items]
Unrealized Gain (Loss) on Price Risk Cash Flow Derivatives, before Tax	$ 4.5
Derivative Instruments, Gain (Loss) Reclassification from Accumulated OCI to Income, Estimated Net Amount to be Transferred	$ 5.7

Income Taxes (Narrative) (Detai

Income Taxes (Narrative) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017	Sep. 30, 2018	Dec. 31, 2016
Operating Loss Carryforwards [Line Items]
Effect of the Tax Cuts and Jobs Act	$ 0	$ 7,800	$ 307,101
Unrecognized Tax Benefits	56,621	53,752	53,752		$ 22,137
Unrecognized Tax Benefits, Interest on Income Taxes Accrued	0	0	31,615
Deferred Foreign Income Tax Expense (Benefit)	(25,323)	2,690	(9,282)
Operating Loss Carryforwards	18,400
Operating Loss Carryforwards, Valuation Allowance	4,600	3,100
Tax Cuts and Jobs Act, Income Tax Expense (Benefit)			7,800
Tax Cuts and Jobs Act, Transition Tax for Accumulated Foreign Earnings, Liability		$ 6,600	$ 6,500	$ 1,400
KANSAS
Operating Loss Carryforwards [Line Items]
Tax Credit Carryforward, Amount	6,800
CANADA
Operating Loss Carryforwards [Line Items]
Operating Loss Carryforwards	$ 30,900

Income Taxes (Provision For Inc

Income Taxes (Provision For Income Taxes) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Income Tax Disclosure [Abstract]
Federal, Current	$ 187,134	$ 239,566	$ 102,786
State, Current	29,547	40,788	2,760
Current Foreign Tax Expense (Benefit)	3,805	(10,080)	19,597
Federal, Deferred	77,916	46,434	(156,767)
State, Deferred	26,073	27,845	28,527
Deferred Foreign Income Tax Expense (Benefit)	(25,323)	2,690	(9,282)
Income tax provision total	$ 299,152	$ 347,243	$ (12,379)

Income Taxes (Reconciliation Of

Income Taxes (Reconciliation Of Effective Tax Rate) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Income Tax Disclosure [Abstract]
Tax computed at statutory rate	$ 246,013	$ 320,138	$ 304,102
Effect of the Tax Cuts and Jobs Act	0	(7,800)	(307,101)
State income taxes, net of federal tax benefit	47,259	56,936	21,343
Domestic production activities deduction	0	0	(9,937)
Noncontrolling interest in net income	(25,494)	(20,215)	(29,357)
Goodwill	32,069	0	0
Other	(695)	(1,816)	8,571
Income tax expense (benefit) total	$ 299,152	$ 347,243	$ (12,379)

Income Taxes (Deferred Tax Asse

Income Taxes (Deferred Tax Assets And Liabilities) (Details) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
Deferred Income Taxes Assets Liabilities [Line Items]
Deferred tax assets, gross	$ 202,192	$ 67,516
Operating Loss Carryforwards, Valuation Allowance	4,600	3,100
Deferred tax liabilities, gross	(1,091,462)	(790,092)
Deferred taxes, net	(889,270)	(722,576)
Property, Plant and Equipment [Member]
Deferred Income Taxes Assets Liabilities [Line Items]
Deferred tax liabilities, noncurrent	(809,966)	(577,133)
Capital Lease Obligations [Member]
Deferred Income Taxes Assets Liabilities [Line Items]
Deferred tax assets, noncurrent	120,435
Accrued employee benefits
Deferred Income Taxes Assets Liabilities [Line Items]
Deferred tax assets, noncurrent	13,635	15,395
Accrued Postretirement Benefit Costs
Deferred Income Taxes Assets Liabilities [Line Items]
Deferred tax assets, noncurrent	11,027	8,482
Accrued Environmental Cost
Deferred Income Taxes Assets Liabilities [Line Items]
Deferred tax assets, noncurrent	28,708	29,937
Deferred Tax Liability Derivatives [Member]
Deferred Income Taxes Assets Liabilities [Line Items]
Deferred tax liabilities, noncurrent	(2,439)	(4,099)
Deferred Tax Asset, Derivatives [Domain]
Deferred Income Taxes Assets Liabilities [Line Items]
Deferred tax assets, noncurrent		0
Deferred tax liabilities, noncurrent	(2,439)
Inventory Differences
Deferred Income Taxes Assets Liabilities [Line Items]
Deferred tax liabilities, noncurrent	(43,500)	(22,518)
Deferred turnaround costs
Deferred Income Taxes Assets Liabilities [Line Items]
Deferred tax liabilities, noncurrent	(135,920)	(87,360)
Net operating loss and tax credit carryforward [Member]
Deferred Income Taxes Assets Liabilities [Line Items]
Deferred tax assets, noncurrent	22,912	13,702
Deferred tax liabilities, noncurrent	(4,600)	(3,100)
HEP
Deferred Income Taxes Assets Liabilities [Line Items]
Deferred tax liabilities, noncurrent	(95,037)	(94,587)
Other
Deferred Income Taxes Assets Liabilities [Line Items]
Deferred tax liabilities, noncurrent		$ (1,295)
Deferred Tax Assets, Other	$ 5,475

Income Taxes (Reconciliation _2

Income Taxes (Reconciliation Of Unrecognized Tax Benefits) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Reconciliation of Unrecognized Tax Benefits [Roll Forward]
Unrecognized Tax Benefits, Beginning of Period	$ 53,752	$ 53,752	$ 22,137
Additions based on tax positions related to the current year	0	0	31,615
Unrecognized Tax Benefits, Increase Resulting from Prior Period Tax Positions	2,893
Unrecognized Tax Benefits, Decrease Resulting from Prior Period Tax Positions	(24)
Unrecognized Tax Benefits, End of Period	$ 56,621	$ 53,752	$ 53,752

Income Taxes Income Taxes (Fore

Income Taxes Income Taxes (Foreign) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Income Tax Disclosure Foreign [Abstract]
Deferred Foreign Income Tax Expense (Benefit)	$ (25,323)	$ 2,690	$ (9,282)

Stockholders' Equity (Changes T

Stockholders' Equity (Changes To Equity) (Details) - shares		12 Months Ended
		Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Increase (Decrease) in Common Shares Outstanding [Roll Forward]
Common shares outstanding at January 1		172,121,491	177,407,622	177,345,266
Issuance of restricted stock, excluding restricted stock with performance feature		0	0	55,626
Vesting of performance units		592,602	115,596	138,374
Vesting of restricted stock with performance feature		412,465	543,396	350,063
Forfeitures of restricted stock		(13,807)	(58,497)	(139,634)
Purchase of treasury stock	[1]	(11,266,226)	(5,886,626)	(342,073)
Common shares outstanding at December 31		161,846,525	172,121,491	177,407,622
Shares withheld for the payment of taxes		415,466	369,255	342,073
[1]	Includes 415,466 , 369,255 and 342,073 shares, respectively, withheld under the terms of stock-based compensation agreements to provide funds for the payment of payroll and income taxes due at the vesting of share-based awards, as well as other stock repurchases under separate authority from our Board of Directors.

Stockholders' Equity (Narrative

Stockholders' Equity (Narrative) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Stockholders' Equity Note [Abstract]
Authorized share repurchase	$ 1,000
Stock repurchase program, value	281
Value of shares withheld related to tax withholding for share-based compensation	$ 21.9	$ 19.6	$ 15.9

Other Comprehensive Income (L_3

Other Comprehensive Income (Loss) (Components And Allocated Tax Effects Of Other Comprehensive Income (Loss)) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Other Comprehensive Income (Loss), before Tax [Abstract]
Other Comprehensive Income (Loss), Foreign currency translation adjustment	$ 13,337	$ (38,227)	$ 22,151
Other Comprehensive Income (Loss), Foreign Currency Translation Gain (Loss) Arising During Period, Tax	2,848	(8,064)	7,774
Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Gain (Loss) Arising During Period, Net of Tax	10,489	(30,163)	14,377
Net unrealized gain (loss) on marketable securities, before tax			(4)
Net Unrealized gain (loss) on available-for-sale securities, tax expense (benefit)			(1)
Net unrealized gain (loss) on available-for-sale securities, after-tax			(3)
Net Unrealized Gain (Loss) on Hedging Activities, Before-Tax	(5,349)	11,221	14,447
Net Unrealized Gain (Loss) on Hedging Activities, Tax	(1,365)	2,857	5,613
Net Unrealized Gain (Loss) on Hedging Activities, Net of Tax	(3,984)	8,364	8,834
Net change in other post-retirement benefit obligations, before tax	(7,207)	(1,507)	(5,807)
Net change in other post-retirement benefit obligations, tax	(1,853)	(378)	(2,037)
Net change in other post-retirement benefit obligations, after tax	(5,354)	(1,129)	(3,770)
Other comprehensive income (loss) before income taxes	781	(28,513)	30,787
Other comprehensive income (loss), Tax Expense (Benefit)	(370)	(5,585)	11,349
Other comprehensive income (loss)	$ 1,151	$ (22,928)	19,438
Less other comprehensive income (loss) attributable to noncontrolling interest, Before-Tax			(57)
Less other comprehensive income (loss) attributable to noncontrolling interest, Tax Expense (Benefit)			0
Other Comprehensive Income (Loss), Net of Tax, Portion Attributable to Noncontrolling Interest			(57)
Other comprehensive income (loss) attributable to HollyFrontier stockholders, Before-Tax			30,844
Other comprehensive income (loss) attributable to HollyFrontier stockholders, Tax Expense (Benefit)			11,349
Other comprehensive income (loss) attributable to HollyFrontier stockholders, After-Tax			$ 19,495

Other Comprehensive Income (L_4

Other Comprehensive Income (Loss) (Accumulated Other Comprehensive Loss In Equity) (Details) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
Other Comprehensive Income (Loss), before Tax [Abstract]
Accumulated Other Comprehensive Income (Loss), Foreign Currency Translation Adjustment, Net of Tax	$ (2,187)	$ (12,676)
Accumulated Other Comprehensive Income (Loss), Unrealized Loss on Pension Obligation	(1,733)	(1,404)
Unrealized gain on post-retirement benefit obligations	15,333	20,358
Unrealized gain (loss) on hedging instruments	3,361	7,345
Accumulated other comprehensive income (loss)	$ 14,774	$ 13,623

Other Comprehensive Income (L_5

Other Comprehensive Income (Loss) Other Comprehensive Income (Loss) Amounts Reclassified to Income Statement (Details) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2019	Sep. 30, 2019	Jun. 30, 2019	Mar. 31, 2019	Dec. 31, 2018	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Other Comprehensive Income (Loss) Reclassified to Income Statement [Line Items]
Sales and other revenues	$ (4,381,888)	$ (4,424,828)	$ (4,782,615)	$ (3,897,247)	$ (4,344,204)	$ (4,770,799)	$ (4,471,236)	$ (4,128,427)	$ (17,486,578)	$ (17,714,666)	$ (14,251,299)
Cost of products sold									13,918,384	13,940,782	11,467,873
Operating expenses									(1,394,052)	(1,285,838)	(1,296,669)
Interest Expense									(143,321)	(131,363)	(117,597)
Income tax expense (benefit)									299,152	347,243	(12,379)
Noncontrolling interest									(99,964)	(79,264)	(75,847)
Net of tax									872,352	1,177,224	881,242
Selling, general and Administrative Expense									354,236	290,424	265,721
Net income attributable to HollyFrontier stockholders	$ 60,605	$ 261,813	$ 196,915	$ 253,055	$ 141,896	$ 342,466	$ 345,507	$ 268,091	772,388	1,097,960	805,395
Reclassification out of Accumulated Other Comprehensive Income [Member]
Other Comprehensive Income (Loss) Reclassified to Income Statement [Line Items]
Reclassifications for the period									17,354	(1,938)	(4,988)
Commodity price swaps | Reclassification out of Accumulated Other Comprehensive Income [Member]
Other Comprehensive Income (Loss) Reclassified to Income Statement [Line Items]
Sales and other revenues									1,799	5,093	(7,836)
Cost of products sold									22,876	0	(299)
Accumulated Net Gain (Loss) from Designated or Qualifying Cash Flow Hedges [Member] | Reclassification out of Accumulated Other Comprehensive Income [Member]
Other Comprehensive Income (Loss) Reclassified to Income Statement [Line Items]
Before tax									19,713	(6,055)	(11,528)
Income tax expense (benefit)									5,027	(1,544)	(4,490)
Noncontrolling interest									0	0	(74)
Net of tax									14,686	(4,511)	(7,038)
Net income attributable to HollyFrontier stockholders									14,686	(4,511)	(7,112)
Accumulated Net Gain (Loss) from Designated or Qualifying Cash Flow Hedges [Member] | Commodity price swaps | Reclassification out of Accumulated Other Comprehensive Income [Member]
Other Comprehensive Income (Loss) Reclassified to Income Statement [Line Items]
Sales and other revenues									(1,799)	(5,093)	7,836
Cost of products sold									(22,876)	0	299
Operating expenses									(1,364)	(962)	(19,244)
Accumulated Net Gain (Loss) from Designated or Qualifying Cash Flow Hedges [Member] | Interest Rate Contract | Reclassification out of Accumulated Other Comprehensive Income [Member]
Other Comprehensive Income (Loss) Reclassified to Income Statement [Line Items]
Interest Expense									0	0	179
Accumulated Defined Benefit Plans Adjustment [Member] | Other Pension, Postretirement and Supplemental Plans [Member] | Reclassification out of Accumulated Other Comprehensive Income [Member]
Other Comprehensive Income (Loss) Reclassified to Income Statement [Line Items]
Income tax expense (benefit)									915	888	1,347
Net of tax									2,672	2,593	2,134
Other Expenses									3,587	3,481	3,481
Accumulated Defined Benefit Plans Adjustment [Member] | Other Pension Plan [Member] | Reclassification out of Accumulated Other Comprehensive Income [Member]
Other Comprehensive Income (Loss) Reclassified to Income Statement [Line Items]
Income tax expense (benefit)									(2)	(7)	(7)
Net of tax									(4)	(20)	(10)
Selling, general and Administrative Expense									$ (6)	$ (27)	$ (17)

Post-retirement Plans (Narrativ

Post-retirement Plans (Narrative) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Defined Benefit Plan Disclosure [Line Items]
Expected long-term rate of return on assets	5.75%
Defined Benefit Plans Investment Funds	100.00%	100.00%
Defined Benefit Plan, Plan Assets, Contributions by Employer	$ 3.6
Defined Benefit Plan, Expected Future Benefit Payment, Next Twelve Months	0.2
Pension expense	0.1
Accrued liability	2.4	$ 2.3
Projected benefit obligations under this plan	2.4
Defined Contribution Plan, Employer Discretionary Contribution Amount	30.3	19.1	$ 17.6
Postretirement Health Coverage [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Expected Future Benefit Payment, Next Twelve Months	1.8
Defined Benefit Plan, Expected Future Benefit Payment, Year Two	2.1
Defined Benefit Plan, Expected Future Benefit Payment, Year Three	2.5
Defined Benefit Plan, Expected Future Benefit Payment, Year Four	2.9
Defined Benefit Plan, Expected Future Benefit Payment, Year Five	3.2
Defined Benefit Plan, Expected Future Benefit Payment, Five Fiscal Years Thereafter	21.7
Business Combination Acquiree [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Accumulated Benefit Obligation	100.5	$ 52.5
Other Postretirement Benefits Plan [Member] | Postretirement Health Coverage [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Expected Future Benefit Payment, Next Twelve Months	1.8
Defined Benefit Plan, Expected Future Benefit Payment, Year Two	1.8
Defined Benefit Plan, Expected Future Benefit Payment, Year Three	1.9
Defined Benefit Plan, Expected Future Benefit Payment, Year Four	1.9
Defined Benefit Plan, Expected Future Benefit Payment, Year Five	2
Defined Benefit Plan, Expected Future Benefit Payment, Five Fiscal Years Thereafter	$ 9.8
Other Contract [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plans Investment Funds	9.00%

Post-retirement Plans (Changes

Post-retirement Plans (Changes in Benefit Obligation and Plan Assets) (Details) - USD ($) $ in Thousands	11 Months Ended	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Sonneborn acquisition		$ 877
Defined Benefit Plan, Change in Benefit Obligation [Roll Forward]
Service cost		1,582	$ 1,648	$ 1,511
Interest cost		1,029	938	987
Participant contributions		0	178
Benefits paid		(2,028)	(1,931)
Actuarial loss (gain)		2,412	(2,643)
Foreign currency exchange rate changes		521	(809)
Pension plan's benefit obligation - end of year	$ 29,499	31,273	26,880	29,499
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward]
Employer contributions		2,003	1,676
Fair value of plan assets - end of year	0	0	0	0
Participant contributions		25	255
Under-funded balance		(31,273)	(26,880)
Liability, Defined Benefit Plan, Current		1,817	1,909
Liability, Defined Benefit Plan, Noncurrent		29,456	24,971
Accrued post-retirement plan liability		(31,273)	(26,880)
Cumulative actuarial (loss) gain		(197)	2,379
Prior service credit		21,992	25,473
Total		21,795	27,852
Business Combination Acquiree [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Sonneborn acquisition		31,686	0
Defined Benefit Plan, Change in Benefit Obligation [Roll Forward]
Service cost	4,420	4,135	4,420
Interest cost	2,249	3,026	2,249
Benefits paid		(1,132)	(1,429)
Actuarial loss (gain)		5,161	1,058
Foreign currency exchange rate changes		2,769	(5,445)
Pension plan's benefit obligation - end of year	63,582	110,410	64,435	63,582
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward]
Actual return on plans assets		7,947	3,599
Employer contributions		3,681	6,239
Foreign currency exchange rate changes		2,694	(5,208)
Fair value of plan assets - end of year	$ 59,261	105,358	62,462	$ 59,261
Under-funded balance		(5,052)	(1,973)
Accrued post-retirement plan liability		(5,052)	(1,973)
Cumulative actuarial (loss) gain		$ 3,155	$ 1,977

Post-retirement Plans (Weighted

Post-retirement Plans (Weighted Average Assumptions Used to Determine End of Period Benefit Obligations) (Details)	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018
Defined Benefit Plan Disclosure [Line Items]
Document Period End Date	Dec. 31, 2019
Business Combination Acquiree PCLI [Member]
Defined Benefit Plan Disclosure [Line Items]
Discount Rate	3.10%	3.70%
Rate of future compensation increases	3.00%
Business Combination Acquiree Sonneborn [Member]
Defined Benefit Plan Disclosure [Line Items]
Discount Rate	1.50%
Minimum [Member]
Defined Benefit Plan Disclosure [Line Items]
Discount Rate	2.94%	3.70%
Current health care trend rate	6.00%	6.50%
Ultimate health care trend rate	4.50%	5.00%
Year rate reaches ultimate trend rate	2022	2022
Maximum [Member]
Defined Benefit Plan Disclosure [Line Items]
Discount Rate	3.20%	3.95%
Current health care trend rate	6.50%	6.50%
Ultimate health care trend rate	5.00%	5.00%
Year rate reaches ultimate trend rate	2028	2028

Post-retirement Plans (Net Peri

Post-retirement Plans (Net Periodic Pension Expense) (Details) - USD ($) $ in Thousands	11 Months Ended	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Defined Benefit Plan Disclosure [Line Items]
Service cost		$ 1,582	$ 1,648	$ 1,511
Interest cost		1,029	938	987
Amortization of Prior Service Cost (Credit)		(3,481)	(3,481)	(3,481)
Defined Benefit Plan, Amortization of Gain (Loss)		(106)	0	0
Net periodic post-retirement credit		(976)	(895)	$ (983)
Business Combination Acquiree [Member]
Defined Benefit Plan Disclosure [Line Items]
Service cost	$ 4,420	4,135	4,420
Interest cost	2,249	3,026	$ 2,249
Expected return on plans assets	(3,464)	(3,840)
Net periodic pension expense	$ 3,205	$ 3,321

Post-retirement Plans (Weight_2

Post-retirement Plans (Weighted Average Assumptions Used to Determine Net Periodic Benefit Expense) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Document Period End Date	Dec. 31, 2019
Expected long-term rate of return on assets	5.75%
Business Combination Acquiree [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Defined Benefit Plan, Accumulated Benefit Obligation	$ 100.5	$ 52.5
Business Combination Acquiree PCLI [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Defined Benefit Plan, Assumptions Used Calculating Benefit Obligation, Discount Rate	3.10%	3.70%
Defined Benefit Plan, Assumptions Used Calculating Benefit Obligation, Rate of Compensation Increase	3.00%
Business Combination Acquiree Sonneborn [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Defined Benefit Plan, Assumptions Used Calculating Benefit Obligation, Discount Rate	1.50%

Post-retirement Plans (Weight_3

Post-retirement Plans (Weighted Average Assumptions Used for Health Care Trend Rates) (Details)	Dec. 31, 2019	Dec. 31, 2018
Business Combination Acquiree Sonneborn [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Discount Rate	1.50%
Business Combination Acquiree PCLI [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Discount Rate	3.10%	3.70%

Post-retirement Plans (Effect o

Post-retirement Plans (Effect of One Percent Change in Health Care Cost Trend Rates) (Details) - Postretirement Health Coverage [Member] $ in Thousands	12 Months Ended
	Dec. 31, 2019USD ($)
Defined Benefit Plan Disclosure [Line Items]
One Percent Increase, Service Cost	$ 502
One Percentage Point Decrease on Service Cost	(396)
One Percentage Point Increase on Accumulated Post-retirement Benefit Obligation	3,489
One Percentage Point Decrease on Accumulated Post-retirement Benefit Obligation	$ (2,990)

Post-retirement Plans (PCLI Pen

Post-retirement Plans (PCLI Pension) (Details) - USD ($) $ in Thousands	11 Months Ended	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Expected Future Benefit Payment, Next Twelve Months		$ 200
Defined Benefit Plan, Change in Benefit Obligation [Roll Forward]
Pension plan's benefit obligation - beginning of year		26,880	$ 29,499
Sonneborn acquisition		877
Service cost		1,582	1,648	$ 1,511
Interest cost		1,029	938	987
Participant contributions		0	178
Benefits paid		(2,028)	(1,931)
Actuarial loss (gain)		2,412	(2,643)
Foreign currency exchange rate changes		521	(809)
Pension plan's benefit obligation - end of year	$ 29,499	31,273	26,880	29,499
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward]
Fair value of plan assets - beginning of year		0	0
Employer contributions		2,003	1,676
Participant contributions		25	255
Fair value of plan assets - end of year	0	0	0	0
Under-funded balance		(31,273)	(26,880)
Accrued post-retirement plan liability		(31,273)	(26,880)
Cumulative actuarial (loss) gain		(197)	2,379
Prior service credit		21,992	25,473
Total		21,795	27,852
Business Combination Acquiree [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Plan Assets, Amount Business Combination		29,376	0
Actual return on plans assets		7,947	3,599
Defined Benefit Plan, Change in Benefit Obligation [Roll Forward]
Pension plan's benefit obligation - beginning of year		64,435	63,582
Sonneborn acquisition		31,686	0
Service cost	4,420	4,135	4,420
Interest cost	2,249	3,026	2,249
Benefits paid		(1,132)	(1,429)
Defined Benefit Plan, Benefit Obligation, Increase (Decrease) for Other Change		(330)	0
Defined Benefit Plan, Plan Assets, Increase (Decrease) for Assets Transferred to (from) Plan		330	0
Actuarial loss (gain)		5,161	1,058
Foreign currency exchange rate changes		2,769	(5,445)
Pension plan's benefit obligation - end of year	63,582	110,410	64,435	63,582
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward]
Fair value of plan assets - beginning of year		62,462	59,261
Employer contributions		3,681	6,239
Fair value of plan assets - end of year	$ 59,261	105,358	62,462	$ 59,261
Under-funded balance		(5,052)	(1,973)
Accrued post-retirement plan liability		(5,052)	(1,973)
Cumulative actuarial (loss) gain		3,155	1,977
Foreign currency exchange rate changes		2,694	$ (5,208)
Underfunded Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Expected Future Benefit Payment, Next Twelve Months		1,800
Defined Benefit Plan, Expected Future Benefit Payment, Five Fiscal Years Thereafter		21,700
Defined Benefit Plan, Expected Future Benefit Payment, Year Five		3,200
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward]
Defined Benefit Plan, Expected Future Benefit Payment, Year Two		2,100
Defined Benefit Plan, Expected Future Benefit Payment, Year Three		2,500
Defined Benefit Plan, Expected Future Benefit Payment, Year Four		$ 2,900

Post-retirement Plans Defined B

Post-retirement Plans Defined Benefit plan, Allocation of Investment Funds (Details)	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018
Defined Benefit Plan, Plan Assets, Allocation [Line Items]
Defined Benefit Plans Investment Funds	100.00%	100.00%
Defined Benefit Plan, Assumptions Used Calculating Net Periodic Benefit Cost, Expected Long-term Rate of Return on Plan Assets	5.75%
Equity Funds [Member]
Defined Benefit Plan, Plan Assets, Allocation [Line Items]
Defined Benefit Plans Investment Funds	47.00%
Defined Benefit Plan, Plan Assets, Investment within Plan Asset Category, Percentage	46.00%
Fixed Income Funds [Member]
Defined Benefit Plan, Plan Assets, Allocation [Line Items]
Defined Benefit Plans Investment Funds	29.00%
Defined Benefit Plan, Plan Assets, Investment within Plan Asset Category, Percentage	30.00%
Real Estate Funds [Member]
Defined Benefit Plan, Plan Assets, Allocation [Line Items]
Defined Benefit Plans Investment Funds	14.00%
Defined Benefit Plan, Plan Assets, Investment within Plan Asset Category, Percentage	14.00%
Other Contract [Member]
Defined Benefit Plan, Plan Assets, Allocation [Line Items]
Defined Benefit Plans Investment Funds	9.00%
Defined Benefit Plan, Plan Assets, Investment within Plan Asset Category, Percentage	10.00%
Defined Benefit Plan, Cash [Member]
Defined Benefit Plan, Plan Assets, Allocation [Line Items]
Defined Benefit Plans Investment Funds	1.00%	100.00%

Contingencies And Contractual_3

Contingencies And Contractual Commitments (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Commitments and Contingencies Disclosure [Abstract]
Proceeds from Insurance Premiums Collected	$ 56,000
Transportation and Storage Contracts, Fiscal Year Maturity
Next Twelve Months	137,457
Year Two	116,058
Year Three	111,058
Year Four	112,399
Year Five	111,939
Thereafter	685,941
Total	1,274,852
Transportation and storage costs	$ 144,800	$ 143,300	$ 140,500

Segment Information (Narrative)

Segment Information (Narrative) (Details)	Dec. 31, 2019
UNEV Pipeline [Member]
Segment Reporting Information [Line Items]
Equity Method Investment, Ownership Percentage	75.00%
Osage Pipeline [Member] [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																12 Months Ended
	Dec. 31, 2019		Sep. 30, 2019		Jun. 30, 2019		Mar. 31, 2019		Dec. 31, 2018		Sep. 30, 2018		Jun. 30, 2018		Mar. 31, 2018		Dec. 31, 2019		Dec. 31, 2018		Dec. 31, 2017
Segment Reporting Information [Line Items]
Revenues from external customers	$ 4,381,888		$ 4,424,828		$ 4,782,615		$ 3,897,247		$ 4,344,204		$ 4,770,799		$ 4,471,236		$ 4,128,427		$ 17,486,578		$ 17,714,666		$ 14,251,299
Intersegment Revenues																	0		0		0
Revenues																	17,486,578		17,714,666		14,251,299
Cost of products sold (exclusive of lower of cost or market inventory valuation adjustment)																	13,918,384		13,940,782		11,467,873
Lower of cost or market inventory valuation adjustment	30,700		34,100						(329,200)				106,900		103,800		(119,775)		136,305		(108,685)
Operating Expenses																	1,394,052		1,285,838		1,296,669
Selling, General and Administrative Expense																	354,236		290,424		265,721
Depreciation, Depletion and Amortization																	509,925		437,324		409,937
Goodwill and long-lived asset impairment																	152,712		0		19,247
Income (loss) from operations	129,183	[1]	$ 426,779	[1]	$ 331,741	[1]	$ 389,341	[1]	217,652	[2],[3]	$ 503,517	[2],[3]	$ 506,977	[2],[3]	$ 395,847	[2],[3]	1,277,044	[1]	1,623,993	[2],[3]	900,537
Income from Equity Method Investments																	5,180		5,825		12,510
Capital expenditures																	293,763		311,029		272,259
Total assets	12,164,841								10,994,601								12,164,841		10,994,601		10,692,154
Refining
Segment Reporting Information [Line Items]
Revenues from external customers																	15,284,110		15,806,304		12,579,672
Intersegment Revenues																	312,678		370,259		338,390
Revenues																	15,596,788		16,176,563		12,918,062
Cost of products sold (exclusive of lower of cost or market inventory valuation adjustment)																	12,980,506		13,250,849		11,009,419
Lower of cost or market inventory valuation adjustment																	(119,775)		136,305		(107,479)
Operating Expenses																	1,095,488		1,055,209		1,008,859
Selling, General and Administrative Expense																	120,518		113,641		103,246
Depreciation, Depletion and Amortization																	309,932		284,439		289,434
Goodwill and long-lived asset impairment																	0				19,247
Income (loss) from operations																	1,210,119		1,336,120		595,336
Income from Equity Method Investments																	0		0		0
Capital expenditures																	199,002		202,791		176,533
Total assets	7,189,094								6,465,155								7,189,094		6,465,155		6,474,666
Lubricants and Specialty Products
Segment Reporting Information [Line Items]
Revenues from external customers																	2,081,221		1,799,506		1,594,036
Intersegment Revenues																	11,307		13,197		0
Revenues																	2,092,528		1,812,703		1,594,036
Cost of products sold (exclusive of lower of cost or market inventory valuation adjustment)																	1,580,036		1,381,540		1,093,984
Lower of cost or market inventory valuation adjustment																	0		0		(1,206)
Operating Expenses																	231,523		167,820		222,461
Selling, General and Administrative Expense																	168,595		143,750		105,666
Depreciation, Depletion and Amortization																	88,781		43,255		31,894
Goodwill and long-lived asset impairment																	152,712				0
Income (loss) from operations																	(129,119)		76,338		141,237
Income from Equity Method Investments																	0		0		0
Capital expenditures																	40,997		37,448		31,464
Total assets	2,223,418								1,506,209								2,223,418		1,506,209		1,610,472
HEP
Segment Reporting Information [Line Items]
Revenues from external customers																	121,027		108,412		77,225
Intersegment Revenues																	411,750		397,808		377,137
Revenues																	532,777		506,220		454,362
Cost of products sold (exclusive of lower of cost or market inventory valuation adjustment)																	0		0		0
Lower of cost or market inventory valuation adjustment																	0		0		0
Operating Expenses																	161,996		146,430		137,856
Selling, General and Administrative Expense																	10,251		11,041		14,336
Depreciation, Depletion and Amortization																	96,706		98,492		77,660
Goodwill and long-lived asset impairment																	0				0
Income (loss) from operations																	263,824		250,257		224,510
Income from Equity Method Investments																	5,180		5,825		12,510
Capital expenditures																	30,112		54,141		44,810
Total assets	2,205,437								2,142,027								2,205,437		2,142,027		2,191,984
Corporate and Other
Segment Reporting Information [Line Items]
Revenues from external customers																	220		444		366
Intersegment Revenues																	(735,735)		(781,264)		(715,527)
Revenues																	(735,515)		(780,820)		(715,161)
Cost of products sold (exclusive of lower of cost or market inventory valuation adjustment)																	(642,158)		(691,607)		(635,530)
Lower of cost or market inventory valuation adjustment																	0		0		0
Operating Expenses																	(94,955)		(83,621)		(72,507)
Selling, General and Administrative Expense																	54,872		21,992		42,473
Depreciation, Depletion and Amortization																	14,506		11,138		10,949
Goodwill and long-lived asset impairment																	0				0
Income (loss) from operations																	(67,780)		(38,722)		(60,546)
Income from Equity Method Investments																	0		0		0
Capital expenditures																	23,652		16,649		19,452
Total assets	$ 546,892								$ 881,210								$ 546,892		$ 881,210		$ 415,032
[1]	For 2019, income from operations reflects non-cash lower of cost or market inventory valuation reductions of $232.3 million for the first quarter, and charges of $47.8 million , $34.1 million and $30.7 million for the second, third and fourth quarters, respectively.
[2]	For 2018, income from operations reflects non-cash lower of cost or market inventory valuation reductions of $103.8 million and $106.9 million for the first and second quarters, respectively, and charges of $17.8 million and $329.2 million
[3]	For 2019, income from operations reflects goodwill impairment charges of $152.7 million in the second quarter.

Quarterly Information (Unaudi_3

Quarterly Information (Unaudited) (Schedule Of Quarterly Information) (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended																12 Months Ended
	Dec. 31, 2019		Sep. 30, 2019		Jun. 30, 2019		Mar. 31, 2019		Dec. 31, 2018		Sep. 30, 2018		Jun. 30, 2018		Mar. 31, 2018		Dec. 31, 2019		Dec. 31, 2018		Dec. 31, 2017
Quarterly Financial Information Disclosure [Abstract]
Sales and other revenues	$ 4,381,888		$ 4,424,828		$ 4,782,615		$ 3,897,247		$ 4,344,204		$ 4,770,799		$ 4,471,236		$ 4,128,427		$ 17,486,578		$ 17,714,666		$ 14,251,299
Operating costs and expenses	4,252,705		3,998,049		4,450,874		3,507,906		4,126,552		4,267,282		3,964,259		3,732,580		16,209,534		16,090,673		13,350,762
Income (loss) from operations	129,183	[1]	426,779	[1]	331,741	[1]	389,341	[1]	217,652	[2],[3]	503,517	[2],[3]	506,977	[2],[3]	395,847	[2],[3]	1,277,044	[1]	1,623,993	[2],[3]	900,537
Income (loss) before income taxes	100,359		401,001		306,153		363,991		191,818		478,390		480,360		373,899		1,171,504		1,524,467		868,863
Net Income Attributable to Parent	$ 60,605		$ 261,813		$ 196,915		$ 253,055		$ 141,896		$ 342,466		$ 345,507		$ 268,091		$ 772,388		$ 1,097,960		$ 805,395
Net income per share attributable to HollyFrontier stockholders - basic (in dollars per share)	$ 0.38		$ 1.60		$ 1.16		$ 1.48		$ 0.82		$ 1.95		$ 1.96		$ 1.51		$ 4.64		$ 6.25		$ 4.54
Net income per share attributable to HollyFrontier stockholders - diluted (in dollars per share)	0.37		1.58		1.15		1.47		0.81		1.93		1.94		1.50		4.61		6.19		$ 4.52
Dividends per common share (in dollars per share)	$ 0.35		$ 0.33		$ 0.33		$ 0.33		$ 0.33		$ 0.33		$ 0.33		$ 0.33		$ 1.34		$ 1.32
Basic	161,398		163,676		169,356		170,851		172,485		175,097		175,899		176,617		166,287		175,009		176,174
Diluted	162,898		165,011		170,547		172,239		174,259		176,927		177,586		177,954		167,385		176,661		177,196
Lower of cost or market inventory valuation adjustment					$ (47,800)		$ (232,300)				$ (17,800)								$ (136,305)
Goodwill and Intangible Asset Impairment																	$ 152,712		0		$ 19,247
Lower of cost or market inventory valuation adjustment	$ (30,700)		$ (34,100)						$ 329,200				$ (106,900)		$ (103,800)		$ 119,775		$ (136,305)		$ 108,685
[1]	For 2019, income from operations reflects non-cash lower of cost or market inventory valuation reductions of $232.3 million for the first quarter, and charges of $47.8 million , $34.1 million and $30.7 million for the second, third and fourth quarters, respectively.
[2]	For 2018, income from operations reflects non-cash lower of cost or market inventory valuation reductions of $103.8 million and $106.9 million for the first and second quarters, respectively, and charges of $17.8 million and $329.2 million
[3]	For 2019, income from operations reflects goodwill impairment charges of $152.7 million in the second quarter.

Uncategorized Items - hfc12-31x

Label	Element	Value
Cheyenne [Member]
Equity Method Investment, Ownership Percentage	us-gaap_EquityMethodInvestmentOwnershipPercentage	50.00%
Osage Pipeline [Member] [Member]
Equity Method Investment, Ownership Percentage	us-gaap_EquityMethodInvestmentOwnershipPercentage	50.00%