Holly Energy Partners (HEP) 10-Q2 May 182018 Q1 Quarterly reportFinancial data

Company Profile

Document Entity Information

Document Entity Information - USD ($)	3 Months Ended
Document Entity Information - USD ($)	Mar. 31, 2018	Apr. 27, 2018	Jun. 30, 2017
Entity Information [Line Items]
Entity Registrant Name	HOLLY ENERGY PARTNERS LP
Entity Central Index Key	1,283,140
Current Fiscal Year End Date	--12-31
Entity Filer Category	Large Accelerated Filer
Document Type	10-Q
Document Period End Date	Mar. 31, 2018
Document Fiscal Year Focus	2,018
Document Fiscal Period Focus	Q1
Amendment Flag	false
Entity Common Stock, Shares Outstanding		105,421,124
Entity Public Float			$ 1,200,000,000

Consolidated Balance Sheets

Consolidated Balance Sheets - USD ($) $ in Thousands	Mar. 31, 2018	Dec. 31, 2017
Current assets:
Cash and cash equivalents	$ 8,565	$ 7,776
Accounts receivable:
Trade	14,534	12,803
Affiliates	41,631	51,501
Total accounts receivable	56,165	64,304
Prepaid and other current assets	3,008	2,311
Total current assets	67,738	74,391
Properties and equipment, net	1,561,054	1,569,471
Intangible assets, net	125,427	129,463
Goodwill	268,166	266,716
Equity method investments	84,678	85,279
Other assets	27,726	28,794
Total assets	2,134,789	2,154,114
Accounts payable:
Trade	13,213	14,547
Affiliates	10,741	7,725
Total accounts payable	23,954	22,272
Accrued interest	6,079	13,256
Deferred revenue	8,497	9,598
Accrued property taxes	6,136	4,652
Other current liabilities	7,602	5,707
Total current liabilities	52,268	55,485
Long-term debt	1,390,952	1,507,308
Other long-term liabilities	15,711	15,843
Deferred revenue	47,740	47,272
Class B unit	43,870	43,141
Partners’ equity:
Common unitholders (105,421,124 and 101,568,955 units issued and outstanding at March 31, 2018 and December 31, 2017, respectively	493,404	393,959
Total partners’ equity	493,404	393,959
Noncontrolling interest	90,844	91,106
Total Equity	584,248	485,065
Total liabilities and equity	$ 2,134,789	$ 2,154,114

Consolidated Balance Sheets (Pa

Consolidated Balance Sheets (Parenthetical) - shares	Mar. 31, 2018	Dec. 31, 2017
Partners' Equity:
Common units issued	105,421,124	101,568,955
Common units outstanding	105,421,124	101,568,955

Consolidated Statements of Inco

Consolidated Statements of Income - USD ($) shares in Thousands, $ in Thousands	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Revenues:
Affiliates	$ 101,428	$ 89,025
Third parties	27,456	16,609
Total revenues	128,884	105,634
Operating costs and expenses:
Operations (exclusive of depreciation and amortization)	36,202	32,489
Depreciation and amortization	25,142	18,777
General and administrative	3,122	2,634
Total operating costs and expenses	64,466	53,900
Operating income	64,418	51,734
Other income (expense):
Equity in earnings of equity method investments	1,279	1,840
Interest expense	(17,581)	(13,539)
Interest income	515	102
Loss on early extinguishment of debt	0	(12,225)
Gain on sale of assets and other	86	73
Total other income (expense)	(15,701)	(23,749)
Income before income taxes	48,717	27,985
State income tax benefit (expense)	(82)	(106)
Net Income	48,635	27,879
Allocation of net income attributable to noncontrolling interests	(2,467)	(2,316)
Net income attributable to the partners	46,168	25,563
General partner interest in net income attributable to the Partnership, including incentive distributions	0	(17,138)
Limited partners’ interest in net income	$ 46,168	$ 8,425
Limited partners’ per unit interest in earnings—basic and diluted:	$ 0.44	$ 0.13
Weighted average limited partners’ units outstanding	103,836	63,113

Consolidated Statement of Compr

Consolidated Statement of Comprehensive Income - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Net income	$ 48,635	$ 27,879
Other comprehensive income:
Change in fair value of cash flow hedging instruments	0	76
Reclassification adjustment to net income on partial settlement of cash flow hedge	0	(13)
Other comprehensive income	0	63
Comprehensive income before noncontrolling interest	48,635	27,942
Allocation of net comprehensive income to noncontrolling interests	(2,467)	(2,316)
Comprehensive income attributable to the partners	$ 46,168	$ 25,626

Consolidated Statements of Cash

Consolidated Statements of Cash Flows - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Payments to Acquire Machinery and Equipment		$ 103
Cash flows from operating activities
Net income	$ 48,635	27,879
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	25,142	18,777
(Gain) loss on sale of assets	(22)	(58)
Amortization of deferred charges	757	770
Equity-based compensation expense	837	433
Equity in earnings of equity method investments, net of distributions	243	273
Loss on early extinguishment of debt	0	12,225
(Increase) decrease in operating assets:
Accounts receivable – trade	(1,731)	375
Accounts receivable – affiliates	9,870	7,733
Prepaid and other current assets	(697)	(282)
Increase (decrease) in operating liabilities:
Accounts payable – trade	(814)	(1,122)
Accounts payable – affiliates	(3,016)	9,943
Accrued interest	(7,177)	(13,551)
Deferred revenue	687	551
Accrued property taxes	1,484	9
Other current liabilities	375	(328)
Other, net	(85)	(106)
Net cash provided by operating activities	80,520	43,635
Cash flows from investing activities
Additions to properties and equipment	(12,612)	(8,265)
Proceeds from sale of assets	22	424
Distributions in excess of equity in earnings of equity investments	358	3,016
Net cash used for investing activities	(12,232)	(4,825)
Cash flows from financing activities
Borrowings under credit agreement	227,000	380,000
Repayments of credit agreement borrowings	(343,500)	(86,000)
Redemption of 6.5% Senior Notes	0	(309,750)
Proceeds from Issuance of common units	114,529	37,563
Distributions to HEP unitholders	(63,496)	(54,805)
Distributions to noncontrolling interests	(2,000)	(2,000)
Distribution to HFC for El Dorado tanks	0	(103)
Contributions from general partner	297	0
Units withheld for tax withholding obligations	(58)	(35)
Deferred financing costs	(6)	0
Other	(277)	(330)
Net cash used by financing activities	(67,499)	(35,460)
Cash and cash equivalents
Increase (decrease) for the period	789	3,350
Beginning of period	7,776	3,657
End of period	$ 8,565	$ 7,007

Consolidated Statement of Equit

Consolidated Statement of Equity - 3 months ended Mar. 31, 2018 - USD ($) $ in Thousands	Total	Common Units	Noncontrolling Interest
Balance at at Dec. 31, 2017	$ 485,065	$ 393,959	$ 91,106
Increase (Decrease) in Partners' Equity [Roll Forward]
Issuance of common units	114,376	114,376
Distributions to HEP unitholders	(63,496)	(63,496)
Distributions to Noncontrolling Interest	(2,000)		(2,000)
Amortization of restricted and performance units	837	837
Class B unit accretion	(729)	(729)
Cumulative transition adjustment for adoption of revenue recognition standard	1,320	1,320
Other	240	240
Net income	48,635	46,897	1,738
Balance at at Mar. 31, 2018	$ 584,248	$ 493,404	$ 90,844

Description of Business and Pre

Description of Business and Presentation of Financial Statements	3 Months Ended
	Mar. 31, 2018
Accounting Policies [Abstract]
Description of Business and Presentation of Financial Statements	Description of Business and Presentation of Financial Statements Holly Energy Partners, L.P. (“HEP”), together with its consolidated subsidiaries, is a publicly held master limited partnership. As of March 31, 2018 , HollyFrontier Corporation (“HFC”) and its subsidiaries own a 57% limited partner interest and the non-economic general partner interest in HEP. We commenced operations on July 13, 2004, upon the completion of our initial public offering. In these consolidated financial statements, the words “we,” “our,” “ours” and “us” refer to HEP unless the context otherwise indicates. On October 31, 2017, we closed on an equity restructuring transaction with HEP Logistics Holdings, L.P. (“HEP Logistics”), a wholly-owned subsidiary of HFC and the general partner of HEP, pursuant to which the incentive distribution rights (“IDRs”) held by HEP Logistics were canceled, and HEP Logistics' 2% general partner interest in HEP was converted into a non-economic general partner interest in HEP. In consideration, we issued 37,250,000 of our common units to HEP Logistics. In addition, HEP Logistics 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 as consideration were eligible to receive distributions. As a result of this transaction, no distributions were made on the general partner interest after October 31, 2017. On January 25, 2018, we entered into a common unit purchase agreement in which certain purchasers agreed to purchase in a private placement 3,700,000 common units representing limited partner interests, at a price of $29.73 per common unit. The private placement closed on February 6, 2018, and we received proceeds of approximately $110 million , which were used to repay indebtedness under our revolving credit facility. We own and operate petroleum product and crude oil pipelines, terminal, tankage and loading rack facilities and refinery processing units that support HFC’s refining and marketing operations in the Mid-Continent, Southwest and Northwest regions of the United States and Delek US Holdings, Inc.’s (“Delek”) refinery in Big Spring, Texas. Additionally, we own a 75% interest in UNEV Pipeline, LLC (“UNEV”), a 50% interest in the Osage Pipe Line Company, LLC (“Osage”) and a 50% interest in the Cheyenne Pipeline LLC. We operate in two reportable segments, a Pipelines and Terminals segment and a Refinery Processing Unit segment. Disclosures around these segments are discussed in Note 15. We generate revenues by charging tariffs for transporting petroleum products and crude oil through our pipelines, by charging fees for terminalling and storing refined products and other hydrocarbons, providing other services at our storage tanks and terminals and by charging fees for processing hydrocarbon feedstocks through our refinery processing units. We do not take ownership of products that we transport, terminal, store or process, and therefore, we are not exposed directly to changes in commodity prices. The consolidated financial statements included herein have been prepared without audit, pursuant to the rules and regulations of the United States Securities and Exchange Commission (the “SEC”). The interim financial statements reflect all adjustments, which, in the opinion of management, are necessary for a fair presentation of our results for the interim periods. Such adjustments are considered to be of a normal recurring nature. Although certain notes and other information required by U.S. generally accepted accounting principles (“GAAP”) have been condensed or omitted, we believe that the disclosures in these consolidated financial statements are adequate to make the information presented not misleading. These consolidated financial statements should be read in conjunction with our Annual Report on Form 10-K for the year ended December 31, 2017 . Results of operations for interim periods are not necessarily indicative of the results of operations that will be realized for the year ending December 31, 2018 . Principles of Consolidation and Common Control Transactions The consolidated financial statements include our accounts and those of subsidiaries and joint ventures that we control. All significant intercompany transactions and balances have been eliminated. Most of our acquisitions from HFC occurred while we were a consolidated variable interest entity (“VIE”) of HFC. Therefore, as an entity under common control with HFC, we recorded these acquisitions on our balance sheets at HFC's historical basis instead of our purchase price or fair value. Accounting Pronouncements Adopted During the Periods Presented Share-Based Compensation In March 2016, an accounting standard update was issued which simplifies the accounting for employee share-based payment transactions, including the accounting for income taxes, forfeitures and statutory tax withholding requirements, as well as classification in the statement of cash flows. We adopted this standard effective January 1, 2017, with no impact to our financial condition or results of operations. The new standard also requires that employee taxes paid when an employer withholds units for tax withholding purposes be reported as financing activities in the statement of cash flows on a retrospective basis. Previously, this activity was included in our operating activities. The impact of this change for the three months ended March 31, 2017 was not material to our consolidated statement of cash flows. Finally, consistent with our existing policy, we have elected to account for forfeitures on an estimated basis. Revenue Recognition In May 2014, an accounting standard update was issued requiring revenue to be recognized when promised goods or services are transferred to customers in an amount that reflects the expected consideration for these goods or services. This standard had an effective date of January 1, 2018, and we have accounted for the new guidance using the modified retrospective implementation method, whereby a cumulative effect adjustment is recorded to retained earnings as of the date of initial application. In preparing for adoption, we evaluated the terms, conditions and performance obligations under our existing contracts with customers. Furthermore, we implemented policies to comply with this new standard. See Note 3 for additional information on our revenue recognition policies. Business Combinations In December 2014, an accounting standard update was issued to provide new guidance on the definition of a business in relation to accounting for identifiable intangible assets in business combinations. This standard had an effective date of January 1, 2018, and had no effect on our financial condition, results of operations or cash flows. Financial Assets and Liabilities In January 2016, an accounting standard update was issued requiring changes in the accounting and disclosures for financial instruments. This standard was effective beginning with our 2018 reporting year and had no effect on our financial condition, results of operations or cash flows. Accounting Pronouncements Not Yet Adopted Leases In February 2016, an accounting standard update was issued requiring leases to be measured and recognized as a lease liability, with a corresponding right-of-use asset on the balance sheet. This standard has an effective date of January 1, 2019, and we are evaluating the impact of this standard. In preparing for adoption, we have identified, reviewed and evaluated contracts containing lease and embedded lease arrangements. Additionally, we have acquired software and are implementing systems to facilitate lease capture and related accounting treatment.

Acquisitions (Notes)

Acquisitions (Notes)	3 Months Ended
Acquisitions (Notes)	Mar. 31, 2018
Acquisitions [Abstract]
Mergers, Acquisitions and Dispositions Disclosures [Text Block]	Acquisitions SLC Pipeline and Frontier Aspen On October 31, 2017, we acquired the remaining 75% interest in SLC Pipeline LLC (“SLC Pipeline”) and the remaining 50% interest in Frontier Aspen LLC (“Frontier Aspen”) from subsidiaries of Plains All American Pipeline, L,P. (“Plains”), for cash consideration of $250 million . Prior to this acquisition, we held noncontrolling interests of 25% of SLC Pipeline and 50% of Frontier Aspen. As a result of the acquisitions, SLC Pipeline and Frontier Aspen are wholly-owned subsidiaries of HEP. These acquisitions were accounted for as a business combination achieved in stages. Our pre-existing equity method investments in SLC Pipeline and Frontier Aspen were remeasured at an acquisition date fair value of $112 million since we now have a controlling interest, and we recognized a gain on the remeasurement in the fourth quarter of 2017 of $36.3 million . The fair value of our pre-existing equity method investments in SLC Pipeline and Frontier Aspen 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 initial cash consideration of $250 million , working capital adjustments of $1.8 million and the fair value of our preexisting equity method investments in SLC Pipeline and Frontier Aspen of $112 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. The following summarizes the value of assets and liabilities acquired: (in thousands) Cash and cash equivalents $ 4,609 Accounts receivable 4,919 Prepaid and other current assets 253 Properties and equipment 277,016 Intangible assets 70,182 Goodwill 11,615 Accounts payable (3,311 ) Accrued property taxes (1,438 ) Other current liabilities (65 ) Net assets acquired $ 363,780 We have assigned a preliminary estimate of fair value to the assets acquired and liabilities assumed, and, therefore, our allocation may change once all needed information has become available and we complete our valuations. SLC Pipeline is the owner of a 95-mile crude pipeline that transports crude oil into the Salt Lake City area from the Utah terminal of the Frontier Pipeline (defined below) and from Wahsatch Station. Frontier Aspen is the owner of a 289-mile crude pipeline from Casper, Wyoming to Frontier Station, Utah (the “Frontier Pipeline”) that supplies Canadian and Rocky Mountain crudes to Salt Lake City area refiners through a connection to the SLC Pipeline.

Revenues

Revenues	3 Months Ended
Revenues	Mar. 31, 2018
Revenue from Contract with Customer [Abstract]
Revenues	Revenues Revenues are generally recognized as products are shipped through our pipelines and terminals, feedstocks are processed through our refinery processing units or other services are rendered. The majority of our contracts with customers meet the definition of a lease since (1) performance of the contracts is dependent on specified property, plant, or equipment and (2) it is remote that one or more parties other than the customer will take more than a minor amount of the output associated with the specified property, plant, or equipment. Therefore, we bifurcate the consideration received between lease and service revenue. The service component is within the scope of Accounting Standards Codification (“ASC”) 606, which largely codified ASU 2014-09. Several of our contracts include incentive or reduced tariffs once a certain quarterly volume is met. Revenue from the variable element of these transactions is recognized based on the actual volumes shipped as it relates specifically to rendering the services during the applicable quarter. We adopted the new revenue recognition standard (see Note 1) using the modified retrospective method, whereby the cumulative effect of applying the new standard was recorded as an adjustment to the opening balance of retained earnings as well as the carrying amounts of assets and liabilities as of January 1, 2018, which had no impact on our cash flows. The following table reflects the cumulative effect of adoption as of January 1, 2018: Prior to Adoption Increase (Decrease) As Adjusted (In millions) Deferred revenue $ 9,598 $ (1,320 ) $ 8,278 Partners’ equity: Common unitholders $ 393,959 $ 1,320 $ 395,279 The majority of our long-term transportation contracts specify minimum volume requirements, whereby, we bill 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, we will recognize these deficiency payments in 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. We recognize the service portion of these deficiency payments in revenue when we do not expect we will be required to satisfy these performance obligations in the future based on the pattern of rights exercised by the customer. During the first quarter of 2018, we recognized $3.6 million of these deficiency payments in revenue, of which $2.2 million related to deficiency payments billed in prior periods, and we have recorded $2.5 million as deferred revenue. March 31, January 1, (In thousands) Contract asset $ 1,711 $ — Contract liability $ (2,479 ) $ (2,713 ) The contract assets and liabilities include both lease and service components. We recognized $2.2 million in revenue during the three months ended March 31, 2018 , that was previously included in contract liability as of January 1, 2018. As of March 31, 2018, we expect to recognize $2.5 billion in revenue related to our unfulfilled performance obligations under the terms of our long-term throughput agreements and operating leases expiring in 2019 through 2036. These agreements provide for changes in the minimum revenue guarantees annually for increases or decreases in the Producer Price Index (“PPI”) or Federal Energy Regulatory Commission (“FERC”) index, with certain contracts having provisions that limit the level of the rate increases or decreases. We expect to recognize revenue for these unfulfilled performance obligation as shown in the table below (amounts shown in table include both service and lease revenues): Years Ending December 31, (In millions) Remainder of 2018 $ 284 2019 350 2020 300 2021 293 2022 267 Thereafter 1,004 Total $ 2,498 Payment terms under our contracts with customers are consistent with industry norms and are typically payable within 10 to 30 days of the date of invoice. Disaggregated revenues are as follows: Three Months Ended March 31, 2018 2017 (In thousands) Pipelines $ 72,169 $ 52,447 Terminals, tanks and loading racks 38,181 33,807 Refinery processing units 18,534 19,380 $ 128,884 $ 105,634 During the three months ended March 31, 2018 , lease revenues amounted to $71.0 million and service revenues amounted to $57.9 million . Both of these revenues were recorded within affiliates and third parties revenues on our consolidated statement of income.

Financial Instruments

Financial Instruments	3 Months Ended
Financial Instruments	Mar. 31, 2018
Fair Value Disclosures [Abstract]
Financial Instruments	Financial Instruments Our financial instruments consist of cash and cash equivalents, accounts receivable, accounts payable, debt and interest rate swaps. The carrying amounts of cash equivalents, accounts receivable and accounts payable approximate fair value due to the short-term maturity of these instruments. Debt consists of outstanding principal under our revolving credit agreement (which approximates fair value as interest rates are reset frequently at current interest rates) and our fixed interest rate senior notes. Fair value measurements are derived using inputs (assumptions that market participants would use in pricing an asset or liability) including assumptions about risk. GAAP categorizes inputs used in fair value measurements into three broad levels as follows: • (Level 1) Quoted prices in active markets for identical assets or liabilities. • (Level 2) Observable inputs other than quoted prices included in Level 1, such as quoted prices for similar assets and liabilities in active markets, similar assets and liabilities in markets that are not active or can be corroborated by observable market data. • (Level 3) Unobservable inputs that are supported by little or no market activity and that are significant to the fair value of the assets or liabilities. This includes valuation techniques that involve significant unobservable inputs. The carrying amounts and estimated fair values of our senior notes were as follows: March 31, 2018 December 31, 2017 Financial Instrument Fair Value Input Level Carrying Value Fair Value Carrying Value Fair Value (In thousands) Liabilities: 6% Senior notes Level 2 495,452 511,740 495,308 525,120 $ 495,452 $ 511,740 $ 495,308 $ 525,120 Level 2 Financial Instruments Our senior notes are measured at fair value using Level 2 inputs. The fair value of the senior notes is based on market values provided by a third-party bank, which were derived using market quotes for similar type debt instruments. See Note 8 for additional information.

Properties and Equipment

Properties and Equipment	3 Months Ended
Properties and Equipment	Mar. 31, 2018
Property, Plant and Equipment [Abstract]
Properties and Equipment	Properties and Equipment The carrying amounts of our properties and equipment are as follows: March 31, December 31, (In thousands) Pipelines, terminals and tankage $ 1,541,596 $ 1,541,722 Refinery assets 347,338 347,338 Land and right of way 86,445 86,484 Construction in progress 24,134 12,029 Other 36,210 35,659 2,035,723 2,023,232 Less accumulated depreciation 474,669 453,761 $ 1,561,054 $ 1,569,471 We capitalized $0.1 million and $0.2 million during the three months ended March 31, 2018 and 2017 , respectively, in interest attributable to construction projects. Depreciation expense was $20.9 million and $16.9 million for the three months ended March 31, 2018 and 2017 , respectively, and includes depreciation of assets acquired under capital leases.

Intangible Assets

Intangible Assets	3 Months Ended
Intangible Assets	Mar. 31, 2018
Goodwill and Intangible Assets Disclosure [Abstract]
Intangible Assets	Intangible assets include transportation agreements and customer relationships that represent a portion of the total purchase price of certain assets acquired from Delek in 2005 , from HFC in 2008 prior to HEP becoming a consolidated VIE of HFC and from Plains in 2017. The carrying amounts of our intangible assets are as follows: Useful Life March 31, December 31, (In thousands) Delek transportation agreement 30 years $ 59,933 $ 59,933 HFC transportation agreement 10-15 years 75,131 75,131 Customer relationships 10 years 69,282 69,282 Other 50 50 204,396 204,396 Less accumulated amortization 78,969 74,933 $ 125,427 $ 129,463 Amortization expense was $4.0 million and $1.7 million for the three months ended March 31, 2018 and 2017 , respectively. We estimate amortization expense to be $14.0 million for each of the next four years and $9.8 million in 2023. We have additional transportation agreements with HFC resulting from historical transactions consisting of pipeline, terminal and tankage assets contributed to us or acquired from HFC. These transactions occurred while we were a consolidated VIE of HFC; therefore, our basis in these agreements is zero and does not reflect a step-up in basis to fair value.

Employees, Retirement and Incen

Employees, Retirement and Incentive Plans	3 Months Ended
Employees, Retirement and Incentive Plans	Mar. 31, 2018
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]
Employees, Retirement and Incentive Plans	Employees, Retirement and Incentive Plans Direct support for our operations is provided by Holly Logistic Services, L.L.C. (“HLS”), an HFC subsidiary, which utilizes personnel employed by HFC who are dedicated to performing services for us. Their costs, including salaries, bonuses, payroll taxes, benefits and other direct costs, are charged to us monthly in accordance with an omnibus agreement that we have with HFC. These employees participate in the retirement and benefit plans of HFC. Our share of retirement and benefit plan costs was $1.8 million and $1.7 million for the three months ended March 31, 2018 and 2017 , respectively. Under HLS’s secondment agreement with HFC (the “Secondment Agreement”), certain employees of HFC are seconded to HLS to provide operational and maintenance services for certain of our processing, refining, pipeline and tankage assets, and HLS reimburses HFC for its prorated portion of the wages, benefits, and other costs related to these employees. We have a Long-Term Incentive Plan for employees and non-employee directors who perform services for us. The Long-Term Incentive Plan consists of four components: restricted or phantom units, performance units, unit options and unit appreciation rights. Our accounting policy for the recognition of compensation expense for awards with pro-rata vesting (a significant proportion of our awards) is to expense the costs ratably over the vesting periods. As of March 31, 2018 , we had two types of incentive-based awards outstanding, which are described below. The compensation cost charged against income was $0.8 million and $0.3 million for the three months ended March 31, 2018 and 2017 , respectively. We currently purchase units in the open market instead of issuing new units for settlement of all unit awards under our Long-Term Incentive Plan. As of March 31, 2018 , 2,500,000 units were authorized to be granted under our Long-Term Incentive Plan, of which 1,323,089 have not yet been granted, assuming no forfeitures of the unvested units and full achievement of goals for the unvested performance units. Restricted and Phantom Units Under our Long-Term Incentive Plan, we grant restricted units to non-employee directors and phantom units to selected employees who perform services for us, with most awards vesting over a period of one to three years. We previously granted restricted units to selected employees who perform services for us, which vest over a period of three years. Although full ownership of the units does not transfer to the recipients until the units vest, the recipients have distribution rights on these units from the date of grant, and the recipients of the restricted units have voting rights on the restricted units from the date of grant. The fair value of each restricted or phantom unit award is measured at the market price as of the date of grant and is amortized on a straight-line basis over the requisite service period for each separately vesting portion of the award. A summary of restricted and phantom unit activity and changes during the three months ended March 31, 2018 , is presented below: Restricted and Phantom Units Units Weighted Average Grant-Date Fair Value Outstanding at January 1, 2018 (nonvested) 119,009 $ 34.77 Granted 12,890 30.23 Outstanding at March 31, 2018 (nonvested) 131,899 $ 34.33 No restricted units were vested and transferred to recipients during the three months ended March 31, 2018 . As of March 31, 2018 , there was $2.3 million of total unrecognized compensation expense related to unvested restricted and phantom unit grants, which is expected to be recognized over a weighted-average period of 1.3 years. Performance Units Under our Long-Term Incentive Plan, we grant performance units to selected officers who perform services for us. Performance units granted are payable in common units at the end of a three-year performance period based upon the growth in our distributable cash flow per common unit over the performance period. As of March 31, 2018 , estimated unit payouts for outstanding nonvested performance unit awards ranged between 100% and 150% of the target number of performance units granted. We granted 2,764 performance units during the three months ended March 31, 2018 . Performance units granted in 2017 and 2018 vest over a three-year performance period ending December 31, 2020 and 2021, respectively, and are payable in HEP common units. The number of units actually earned will be based on the growth of our distributable cash flow per common unit over the performance period, and can range from 50% to 150% of the target number of performance units granted. Although common units are not transferred to the recipients until the performance units vest, the recipients have distribution rights with respect to the common units from the date of grant. A summary of performance unit activity and changes for the three months ended March 31, 2018 , is presented below: Performance Units Units Outstanding at January 1, 2018 (nonvested) 36,911 Granted 2,764 Vesting and transfer of common units to recipients (4,283 ) Outstanding at March 31, 2018 (nonvested) 35,392 The grant date fair value of performance units vested and transferred to recipients during both the three months ended March 31, 2018 and 2017 was $0.1 million . Based on the weighted average fair value of performance units outstanding at March 31, 2018 , of $1.2 million , there was $0.8 million of total unrecognized compensation expense related to nonvested performance units, which is expected to be recognized over a weighted-average period of 1.8 years. During the three months ended March 31, 2018 , we did not purchase any common units in the open market for the issuance and settlement of unit awards under our Long-Term Incentive Plan.

Debt

Debt	3 Months Ended
Debt	Mar. 31, 2018
Debt Instruments [Abstract]
Debt	Debt Credit Agreement We have a $1.4 billion senior secured revolving credit facility (the “Credit Agreement”) expiring in July 2022 . The Credit Agreement is available to fund capital expenditures, investments, acquisitions, distribution payments and working capital and for general partnership purposes. The Credit Agreement is also available to fund letters of credit up to a $50 million sub-limit, and it contains an accordion feature giving us the ability to increase the size of the facility by up to $300 million with additional lender commitments. Our obligations under the Credit Agreement are collateralized by substantially all of our assets, and indebtedness under the Credit Agreement is guaranteed by our material, wholly-owned subsidiaries. The Credit Agreement requires us to maintain compliance with certain financial covenants consisting of total leverage, senior secured leverage, and interest coverage. It also limits or restricts our ability to engage in certain activities. If, at any time prior to the expiration of the Credit Agreement, HEP obtains two investment grade credit ratings, the Credit Agreement will become unsecured and many of the covenants, limitations, and restrictions will be eliminated. We may prepay all loans at any time without penalty, except for tranche breakage costs. If an event of default exists under the Credit Agreement, the lenders will be able to accelerate the maturity of all loans outstanding and exercise other rights and remedies. We were in compliance with the covenants as of March 31, 2018 . Senior Notes On July 19, 2016, we closed a private placement of $400 million in aggregate principal amount of 6% senior unsecured notes due in 2024 (the “ 6% Senior Notes”). On September 22, 2017, we closed a private placement of an additional $100 million in aggregate principal amount of the 6% Senior Notes for a combined aggregate principal amount outstanding of $500 million maturing in 2024 . The 6% Senior Notes are unsecured and impose certain restrictive covenants, including limitations on our ability to incur additional indebtedness, make investments, sell assets, incur certain liens, pay distributions, enter into transactions with affiliates and enter into mergers. We were in compliance with the restrictive covenants for the 6% Senior Notes as of March 31, 2018 . At any time when the 6% Senior Notes are rated investment grade by both Moody’s and Standard & Poor’s and no default or event of default exists, we will not be subject to many of the foregoing covenants. Additionally, we have certain redemption rights at varying premiums over face value under the 6% Senior Notes. Indebtedness under the 6% Senior Notes is guaranteed by our wholly-owned subsidiaries. On January 4, 2017, we redeemed the $300 million aggregate principal amount of 6.5% senior notes due in 2020 (the “6.5% Senior Notes”) at a redemption cost of $309.8 million at which time we 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 . We funded the redemption with borrowings under our Credit Agreement. Long-term Debt The carrying amounts of our long-term debt are as follows: March 31, December 31, (In thousands) Credit Agreement Amount outstanding $ 895,500 $ 1,012,000 6% Senior Notes Principal 500,000 500,000 Unamortized premium and debt issuance costs (4,548 ) (4,692 ) 495,452 495,308 Total long-term debt $ 1,390,952 $ 1,507,308 Interest Rate Risk Management The two interest rate swaps that hedged our exposure to the cash flow risk caused by the effects of LIBOR changes on $150 million of Credit Agreement advances matured on July 31, 2017. The swaps had effectively converted $150 million of our LIBOR based debt to fixed rate debt. Interest Expense and Other Debt Information Interest expense consists of the following components: Three Months Ended March 31, 2018 2017 (In thousands) Interest on outstanding debt: Credit Agreement, net of interest on interest rate swaps $ 8,944 $ 6,449 6.5% Senior Notes — 162 6% Senior Notes 7,500 6,000 Amortization of discount and deferred debt issuance costs 757 770 Commitment fees and other 477 354 Total interest incurred 17,678 13,735 Less capitalized interest 97 196 Net interest expense $ 17,581 $ 13,539 Cash paid for interest $ 16,599 $ 26,517 Capital Lease Obligations We have capital lease obligations related to vehicle leases with initial terms of 33 to 48 months. Such obligations totaled $2.2 million and $1.9 million as of March 31, 2018 and December 31, 2017 , respectively, and are included in other current and long-term liabilities on the consolidated balance sheets. The total cost of assets under capital leases was $5.7 million and $5.1 million as of March 31, 2018 and December 31, 2017 , respectively, with accumulated depreciation of $3.5 million and $3.3 million as of March 31, 2018 and December 31, 2017 , respectively. We include depreciation of capital leases in depreciation and amortization in our consolidated statements of income.

Significant Customers

Significant Customers	3 Months Ended
Significant Customers	Mar. 31, 2018
Risks and Uncertainties [Abstract]
Significant Customers	Significant Customers All revenues are domestic revenues, of which 84% are currently generated from our two largest customers: HFC and Delek. The following table presents the percentage of total revenues generated by each of these customers: Three Months Ended March 31, 2018 2017 HFC 79 % 84 % Delek 5 % 8 %

Related Party Transactions

Related Party Transactions	3 Months Ended
Related Party Transactions	Mar. 31, 2018
Related Party Transactions [Abstract]
Related Party Transactions	Related Party Transactions We serve HFC’s refineries under long-term pipeline, terminal and tankage throughput agreements, and refinery processing unit tolling agreements expiring from 2019 to 2036. Under these agreements, HFC agrees to transport, store and process throughput volumes of refined product, crude oil and feedstocks on our pipelines, terminals, tankage, loading rack facilities and refinery processing units that result in minimum annual payments to us. These minimum annual payments or revenues are subject to annual rate adjustments on July 1st each year generally based on increases or decreases in PPI or the FERC index. As of March 31, 2018 , these agreements with HFC require minimum annualized payments to us of $332.7 million . If HFC fails to meet its minimum volume commitments under the agreements in any quarter, it will be required to pay us the amount of any shortfall in cash by the last day of the month following the end of the quarter. Under certain of these agreements, a shortfall payment may be applied as a credit in the following four quarters after its minimum obligations are met. Under certain provisions of an omnibus agreement we have with HFC (the “Omnibus Agreement”), we pay HFC an annual administrative fee (currently $2.5 million ) for the provision by HFC or its affiliates of various general and administrative services to us. This fee does not include the salaries of personnel employed by HFC who perform services for us on behalf of HLS or the cost of their employee benefits, which are charged to us separately by HFC. Also, we reimburse HFC and its affiliates for direct expenses they incur on our behalf. Related party transactions with HFC are as follows: • Revenues received from HFC were $101.4 million and $89.0 million for the three months ended March 31, 2018 and 2017 , respectively. • HFC charged us general and administrative services under the Omnibus Agreement of $0.6 million for each of the three months ended March 31, 2018 and 2017 . • We reimbursed HFC for costs of employees supporting our operations of $12.7 million and $11.4 million for the three months ended March 31, 2018 and 2017 , respectively. • HFC reimbursed us $1.2 million and $1.3 million for the three months ended March 31, 2018 and 2017 , respectively, for expense and capital projects. • We distributed $36.3 million and $30.3 million in the three months ended March 31, 2018 and 2017 , respectively, to HFC as regular distributions on its common units in the three months ended March 31, 2018 and on its common units and general partner interest, including general partner incentive distributions, in the three months ended March 31, 2017. • Accounts receivable from HFC were $41.6 million and $51.5 million at March 31, 2018 , and December 31, 2017 , respectively. • Accounts payable to HFC were $10.7 million and $7.7 million at March 31, 2018 , and December 31, 2017 , respectively. • Deferred revenue in the consolidated balance sheets at March 31, 2018 and December 31, 2017 , includes $0.9 million and $4.4 million , respectively, relating to certain shortfall billings to HFC. It is possible that HFC may not exceed its minimum obligations to receive credit for any of the $0.9 million deferred at March 31, 2018 . • We received operating lease payments from HFC for use of our Artesia and Tulsa railyards of $0.5 million and $0.1 million for the three months ended March 31, 2018 and 2017 , respectively. • On October 31, 2017, we closed on an equity restructuring transaction with HEP Logistics, a wholly-owned subsidiary of HFC and the general partner of HEP, pursuant to which the incentive distribution rights held by HEP Logistics were canceled, and HEP Logistics' 2% general partner interest in HEP was converted into a non-economic general partner interest in HEP. In consideration, we issued 37,250,000 of our common units to HEP Logistics. In addition, HEP Logistics 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 as consideration were eligible to receive distributions.

Partners' Equity

Partners' Equity	3 Months Ended
Partners' Equity	Mar. 31, 2018
Partners' Capital [Abstract]
Partners' Equity	Partners’ Equity, Income Allocations and Cash Distributions As of March 31, 2018 , HFC held 59,630,030 of our common units, constituting a 57% limited partner interest in us, and held the non-economic general partner interest. Additionally, HEP Logistics, our general partner, owned all incentive distribution rights through October 31, 2017, at which time we closed on an equity restructuring transaction with HEP Logistics pursuant to which the incentive distribution rights were canceled. See Note 1 for a description of this equity restructuring transaction. On January 25, 2018, we entered into a common unit purchase agreement in which certain purchasers agreed to purchase in a private placement 3,700,000 common units representing limited partnership interests, at a price of $29.73 per common unit. The private placement closed on February 6, 2018, and we received proceeds of approximately $110 million , which were used to repay indebtedness under our Credit Agreement. Continuous Offering Program We have a continuous offering program under which we may issue and sell common units from time to time, representing limited partner interests, up to an aggregate gross sales amount of $200 million . For the three months ended March 31, 2018 , HEP issued 152,169 units under this program, providing approximately $4.6 million in gross proceeds. As of March 31, 2018 , HEP has issued 2,394,076 units under this program, providing $81.7 million in gross proceeds. We intend to use our net proceeds for general partnership purposes, which may include funding working capital, repayment of debt, acquisitions and capital expenditures. Amounts repaid under our credit facility may be reborrowed from time to time. Allocations of Net Income Net income attributable to HEP is allocated to the partners based on their weighted-average ownership percentage during the period. Prior to the equity restructuring of the general partner interest owned by HEP Logistics described in Note 1 that occurred on October 31, 2017, net income attributable to HEP was allocated between limited partners and the general partner interest in accordance with the provisions of the partnership agreement. HEP net income allocated to the general partner included incentive distributions that were declared subsequent to quarter end. After incentive distributions and other priority allocations were allocated to the general partner, the remaining net income attributable to HEP was allocated to the partners based on their weighted-average ownership percentage during the period. The following table presents the allocation of the general partner interest in net income for the periods presented below: Three Months Ended March 31, 2018 2017 (In thousands) General partner interest in net income $ — $ 511 General partner incentive distribution — 16,627 Total general partner interest in net income $ — $ 17,138 Cash Distributions On April 19, 2018 , we announced our cash distribution for the first quarter of 2018 of $0.6550 per unit. The distribution is payable on all common units and will be paid May 10, 2018 , to all unitholders of record on April 30, 2018 . However, HEP Logistics will waive $2.5 million in limited partner cash distributions in accordance with the equity restructuring discussed in Note 1. Prior to the equity restructuring of the general partner interest owned by HEP Logistics that occurred on October 31, 2017, our general partner, HEP Logistics, was entitled to incentive distributions if the amount we distributed with respect to any quarter exceeded specified target levels. After the restructuring of the general partner interest, the general partner interest was no longer entitled to any distributions. The following table presents the allocation of our regular quarterly cash distributions to the general and limited partners for the periods in which they apply. Our distributions are declared subsequent to quarter end; therefore, the amounts presented do not reflect distributions paid during the periods presented below. Three Months Ended March 31, 2018 2017 (In thousands, except per unit data) General partner interest in distribution $ — $ 1,148 General partner incentive distribution — 16,627 Total general partner distribution — 17,775 Limited partner distribution 66,551 39,632 Total regular quarterly cash distribution $ 66,551 $ 57,407 Cash distribution per unit applicable to limited partners $ 0.6550 $ 0.6200 As a master limited partnership, we distribute our available cash, which historically has exceeded our net income attributable to HEP because depreciation and amortization expense represents a non-cash charge against income. The result is a decline in our partners’ equity since our regular quarterly distributions have exceeded our quarterly net income attributable to HEP. Additionally, if the asset contributions and acquisitions from HFC had occurred while we were not a consolidated variable interest entity of HFC, our acquisition cost, in excess of HFC’s historical basis in the transferred assets, would have been recorded in our financial statements at the time of acquisition as increases to our properties and equipment and intangible assets instead of decreases to our partners’ equity.

Net Income per Limited Partner

Net Income per Limited Partner Unit (Notes)	3 Months Ended
Net Income per Limited Partner Unit (Notes)	Mar. 31, 2018
Net Income per Limited Partner Unit [Abstract]
Net Income Per Limited Partner Unit	Net Income Per Limited Partner Unit Net income per unit applicable to the limited partners is computed using the two-class method, since we have more than one participating security as of March 31, 2018, common units and restricted units. Prior to the equity restructuring transaction described in Note 1, which was effective October 31, 2017, we had participating securities which included the aforementioned common units and restricted units as well as general partner units and IDRs. After the equity restructuring, the general partner interest was no longer entitled to any distributions, and none were made on the general partner interest after October 31, 2017. To the extent net income attributable to the partners exceeds or is less than cash distributions, this difference is allocated to the partners based on their weighted-average ownership percentage during the period, after consideration of any priority allocations of earnings. Our dilutive securities, restricted units, are immaterial for all periods presented. For purposes of applying the two-class method, including the allocation of cash distributions in excess of earnings, net income per limited partner unit is computed as follows: Three Months Ended 2018 2017 (In thousands) Net income attributable to the partners $ 46,168 $ 25,563 Less: General partner’s distribution declared (including IDRs) — (17,775 ) Limited partner’s distribution declared on common units (66,551 ) (39,632 ) Distributions in excess of net income attributable to the partners $ (20,383 ) $ (31,844 ) General Partner (including IDRs) Limited Partners’ Common Units Total (In thousands, except per unit data) Three Months Ended March 31, 2018 Net income attributable to the partners: Distributions declared $ — $ 66,551 $ 66,551 Distributions in excess of net income attributable to the partners (20,383 ) (20,383 ) Net income attributable to the partners $ — $ 46,168 $ 46,168 Weighted average limited partners' units outstanding 103,836 Limited partners' per unit interest in earnings - basic and diluted $ 0.44 Three Months Ended March 31, 2017 Net income attributable to the partners: Distributions declared $ 17,775 $ 39,632 $ 57,407 Distributions in excess of net income attributable to the partners (637 ) (31,207 ) (31,844 ) Net income attributable to the partners $ 17,138 $ 8,425 $ 25,563 Weighted average limited partners' units outstanding 63,113 Limited partners' per unit interest in earnings - basic and diluted $ 0.13

Environmental

Environmental	3 Months Ended
Environmental	Mar. 31, 2018
Accrual for Environmental Loss Contingencies [Abstract]
Environmental	Environmental We incurred no expenses for the three months ended March 31, 2018 and 2017 for environmental remediation obligations. The accrued environmental liability, net of expected recoveries from indemnifying parties, reflected in our consolidated balance sheets was $6.4 million and $6.5 million at March 31, 2018 and December 31, 2017 , respectively, of which $4.9 million and $5.0 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. Under the Omnibus Agreement and certain transportation agreements and purchase agreements with HFC, HFC has agreed to indemnify us, subject to certain monetary and time limitations, for environmental noncompliance and remediation liabilities associated with certain assets transferred to us from HFC and occurring or existing prior to the date of such transfers. As of March 31, 2018 and December 31, 2017 , our consolidated balance sheets included additional accrued environmental liabilities of $0.7 million and $0.8 million , respectively, for HFC indemnified liabilities, and other assets included equal and offsetting balances representing amounts due from HFC related to indemnifications for environmental remediation liabilities.

Contingencies

Contingencies	3 Months Ended
Contingencies	Mar. 31, 2018
Commitments and Contingencies Disclosure [Abstract]
Contingencies	Contingencies We are a party to various legal and regulatory proceedings, none of which we believe will have a material adverse impact on our financial condition, results of operations or cash flows.

Segments (Notes)

Segments (Notes)	3 Months Ended
Segments (Notes)	Mar. 31, 2018
Segment Reporting [Abstract]
Segment Reporting Disclosure [Text Block]	Operating Segments Although financial information is reviewed by our chief operating decision makers from a variety of perspectives, they view the business in two operating segments: pipelines and terminals, and refinery processing units. These operating segments adhere to the accounting polices used for our consolidated financial statements. The pipelines and terminals segment has been aggregated as both pipeline and terminals (1) have similar economic characteristics,(2) similarly provide logistics services of transportation and storage of petroleum products, (3) similarly support the petroleum refining business, including distribution of its products, (4) have principally the same customers and (5) are subject to similar regulatory requirements. We evaluate the performance of each segment based on its respective operating income. Certain general and administrative expenses and interest and financing costs are excluded from segment operating income as they are not directly attributable to a specific operating segment. Identifiable assets are those used by the segment, whereas other assets are principally equity method investments, cash, deposits and other assets that are not associated with a specific reportable operating segment. Three Months Ended March 31, 2018 2017 Revenues: Pipelines and terminals - affiliate $ 82,894 $ 69,645 Pipelines and terminals - third-party 27,456 16,609 Refinery processing units - affiliate 18,534 19,380 Total segment revenues $ 128,884 $ 105,634 Segment operating income: Pipelines and terminals $ 60,213 $ 46,485 Refinery processing units 7,327 7,883 Total segment operating income 67,540 54,368 Unallocated general and administrative expenses (3,122 ) (2,634 ) Interest and financing costs, net (17,066 ) (25,662 ) Equity in earnings of unconsolidated affiliates 1,279 1,840 Gain on sale of assets and other 86 73 Income before income taxes $ 48,717 $ 27,985 Capital Expenditures: Pipelines and terminals $ 12,612 $ 8,129 Refinery processing units — 136 Total capital expenditures $ 12,612 $ 8,265 March 31, 2018 December 31, 2017 (in thousands) Identifiable assets: Pipelines and terminals (1) $ 1,711,880 $ 1,728,074 Refinery processing units 324,570 328,585 Other 98,339 97,455 Total identifiable assets $ 2,134,789 $ 2,154,114 (1) Includes goodwill of $268.2 million and $266.7 million as of March 31, 2018 and December 31, 2017 , respectively.

Supplemental Guarantor _ Non-Gu

Supplemental Guarantor / Non-Guarantor Financial Information	3 Months Ended
	Mar. 31, 2018
Supplemental Guarantor / Non-Guarantor Financial Information [Abstract]
Supplemental Guarantor / Non-Guarantor Financial Information	Supplemental Guarantor/Non-Guarantor Financial Information Obligations of HEP (“Parent”) under the 6% Senior Notes have been jointly and severally guaranteed by each of its direct and indirect 100% owned subsidiaries (“Guarantor Subsidiaries”). These guarantees are full and unconditional, subject to certain customary release provisions. These circumstances include (i) when a Guarantor Subsidiary is sold or sells all or substantially all of its assets, (ii) when a Guarantor Subsidiary is declared “unrestricted” for covenant purposes, (iii) when a Guarantor Subsidiary’s guarantee of other indebtedness is terminated or released and (iv) when the requirements for legal defeasance or covenant defeasance or to discharge the senior notes have been satisfied. The following financial information presents condensed consolidating balance sheets, statements of comprehensive income, and statements of cash flows of the Parent, the Guarantor Subsidiaries and the Non-Guarantor Subsidiaries. The information has been presented as if the Parent accounted for its ownership in the Guarantor Subsidiaries, and the Guarantor Restricted Subsidiaries accounted for the ownership of the Non-Guarantor Non-Restricted Subsidiaries, using the equity method of accounting. Condensed Consolidating Balance Sheet March 31, 2018 Parent Guarantor Restricted Subsidiaries Non-Guarantor Non-Restricted Subsidiaries Eliminations Consolidated (In thousands) ASSETS Current assets: Cash and cash equivalents $ 2 $ 1,485 $ 7,078 $ — $ 8,565 Accounts receivable — 51,428 4,935 (198 ) 56,165 Prepaid and other current assets 226 2,427 355 — 3,008 Total current assets 228 55,340 12,368 (198 ) 67,738 Properties and equipment, net — 1,204,672 356,382 — 1,561,054 Investment in subsidiaries 1,879,597 272,530 — (2,152,127 ) — Intangible assets, net — 125,427 — — 125,427 Goodwill — 268,166 — — 268,166 Equity method investments — 84,678 — — 84,678 Other assets 11,096 16,630 — — 27,726 Total assets $ 1,890,921 $ 2,027,443 $ 368,750 $ (2,152,325 ) $ 2,134,789 LIABILITIES AND EQUITY Current liabilities: Accounts payable $ — $ 20,691 $ 3,461 $ (198 ) $ 23,954 Accrued interest 6,079 — — — 6,079 Deferred revenue — 8,497 — — 8,497 Accrued property taxes — 4,423 1,713 — 6,136 Other current liabilities 226 7,376 — — 7,602 Total current liabilities 6,305 40,987 5,174 (198 ) 52,268 Long-term debt 1,390,952 — — — 1,390,952 Other long-term liabilities 260 15,249 202 — 15,711 Deferred revenue — 47,740 — — 47,740 Class B unit — 43,870 — — 43,870 Equity - partners 493,404 1,879,597 272,530 (2,152,127 ) 493,404 Equity - noncontrolling interest — — 90,844 — 90,844 Total liabilities and equity $ 1,890,921 $ 2,027,443 $ 368,750 $ (2,152,325 ) $ 2,134,789 Condensed Consolidating Balance Sheet December 31, 2017 Parent Guarantor Restricted Subsidiaries Non-Guarantor Non-Restricted Subsidiaries Eliminations Consolidated (In thousands) ASSETS Current assets: Cash and cash equivalents $ 2 $ 511 $ 7,263 $ — $ 7,776 Accounts receivable — 59,448 5,038 (182 ) 64,304 Prepaid and other current assets 13 2,016 282 — 2,311 Total current assets 15 61,975 12,583 (182 ) 74,391 Properties and equipment, net — 1,213,626 355,845 — 1,569,471 Investment in subsidiaries 1,902,285 273,319 — (2,175,604 ) — Intangible assets, net — 129,463 — — 129,463 Goodwill — 266,716 — — 266,716 Equity method investments — 85,279 — — 85,279 Other assets 11,753 17,041 — — 28,794 Total assets $ 1,914,053 $ 2,047,419 $ 368,428 $ (2,175,786 ) $ 2,154,114 LIABILITIES AND EQUITY Current liabilities: Accounts payable $ — $ 20,928 $ 1,526 $ (182 ) $ 22,272 Accrued interest 12,500 756 — — 13,256 Deferred revenue — 8,540 1,058 — 9,598 Accrued property taxes — 3,431 1,221 — 4,652 Other current liabilities — 5,707 — — 5,707 Total current liabilities 12,500 39,362 3,805 (182 ) 55,485 Long-term debt 1,507,308 — — — 1,507,308 Other long-term liabilities 286 15,359 198 — 15,843 Deferred revenue — 47,272 — — 47,272 Class B unit — 43,141 — — 43,141 Equity - partners 393,959 1,902,285 273,319 (2,175,604 ) 393,959 Equity - noncontrolling interest — — 91,106 — 91,106 Total liabilities and equity $ 1,914,053 $ 2,047,419 $ 368,428 $ (2,175,786 ) $ 2,154,114 Condensed Consolidating Statement of Comprehensive Income Three Months Ended March 31, 2018 Parent Guarantor Restricted Subsidiaries Non-Guarantor Non-restricted Subsidiaries Eliminations Consolidated (In thousands) Revenues: Affiliates $ — $ 94,291 $ 7,137 $ — $ 101,428 Third parties — 19,978 7,478 — 27,456 — 114,269 14,615 — 128,884 Operating costs and expenses: Operations (exclusive of depreciation and amortization) — 32,664 3,538 — 36,202 Depreciation and amortization 21,001 4,141 — 25,142 General and administrative 1,280 1,842 — — 3,122 1,280 55,507 7,679 — 64,466 Operating income (loss) (1,280 ) 58,762 6,936 — 64,418 Other income (expense): Equity in earnings of subsidiaries 65,052 5,212 — (70,264 ) — Equity in earnings of equity method investments — 1,279 — — 1,279 Interest expense (17,649 ) 68 — — (17,581 ) Interest income — 515 — — 515 Gain on sale of assets and other 45 28 13 — 86 47,448 7,102 13 (70,264 ) (15,701 ) Income before income taxes 46,168 65,864 6,949 (70,264 ) 48,717 State income tax expense — (82 ) — — (82 ) Net income 46,168 65,782 6,949 (70,264 ) 48,635 Allocation of net income attributable to noncontrolling interests — (730 ) (1,737 ) — (2,467 ) Net income attributable to the partners 46,168 65,052 5,212 (70,264 ) 46,168 Other comprehensive income — — — — — Comprehensive income attributable to the partners $ 46,168 $ 65,052 $ 5,212 $ (70,264 ) $ 46,168 Condensed Consolidating Statement of Comprehensive Income Three Months Ended March 31, 2017 Parent Guarantor Restricted Subsidiaries Non-Guarantor Non-Restricted Subsidiaries Eliminations Consolidated (In thousands) Revenues: Affiliates $ — $ 80,776 $ 8,249 $ — $ 89,025 Third parties — 11,003 5,606 — 16,609 — 91,779 13,855 — 105,634 Operating costs and expenses: Operations (exclusive of depreciation and amortization) — 29,092 3,397 — 32,489 Depreciation and amortization — 14,853 3,924 — 18,777 General and administrative 1,155 1,479 — — 2,634 1,155 45,424 7,321 — 53,900 Operating income (loss) (1,155 ) 46,355 6,534 — 51,734 Other income (expense): Equity in earnings of subsidiaries 45,283 4,901 — (50,184 ) — Equity in earnings of equity method investments — 1,840 — — 1,840 Interest expense (6,340 ) (7,199 ) — — (13,539 ) Interest income — 102 — — 102 Loss on early extinguishment of debt (12,225 ) — — — (12,225 ) Gain on sale of assets and other — 72 1 — 73 26,718 (284 ) 1 (50,184 ) (23,749 ) Income before income taxes 25,563 46,071 6,535 (50,184 ) 27,985 State income tax expense — (106 ) — — (106 ) Net income 25,563 45,965 6,535 (50,184 ) 27,879 Allocation of net income attributable to noncontrolling interests — (682 ) (1,634 ) — (2,316 ) Net income attributable to the partners 25,563 45,283 4,901 (50,184 ) 25,563 Other comprehensive income 63 63 — (63 ) 63 Comprehensive income attributable to the partners $ 25,626 $ 45,346 $ 4,901 $ (50,247 ) $ 25,626 Condensed Consolidating Statement of Cash Flows Three Months Ended March 31, 2018 Parent Guarantor Restricted Subsidiaries Non-Guarantor Non-Restricted Subsidiaries Eliminations Consolidated (In thousands) Cash flows from operating activities $ (23,679 ) $ 98,013 $ 11,398 $ (5,212 ) $ 80,520 Cash flows from investing activities Additions to properties and equipment — (9,029 ) (3,583 ) — (12,612 ) Distributions from UNEV in excess of earnings — 788 — (788 ) — Proceeds from sale of assets — 22 — — 22 Distributions in excess of equity in earnings of equity investments — 358 — — 358 — (7,861 ) (3,583 ) (788 ) (12,232 ) Cash flows from financing activities Net repayments under credit agreement (116,500 ) — — — (116,500 ) Net intercompany financing activities 89,060 (89,060 ) — — — Proceeds from issuance of common units 114,376 153 — — 114,529 Contribution from general partner 297 — — — 297 Distributions to HEP unitholders (63,496 ) — — — (63,496 ) Distributions to noncontrolling interests — — (8,000 ) 6,000 (2,000 ) Units withheld for tax withholding obligations (58 ) — — — (58 ) Deferred financing cost — 6 — — 6 Other — (277 ) — — (277 ) 23,679 (89,178 ) (8,000 ) 6,000 (67,499 ) Cash and cash equivalents Increase (decrease) for the period — 974 (185 ) — 789 Beginning of period 2 511 7,263 — 7,776 End of period $ 2 $ 1,485 $ 7,078 $ — $ 8,565 Condensed Consolidating Statement of Cash Flows Three Months Ended March 31, 2017 Parent Guarantor Restricted Subsidiaries Non-Guarantor Non-Restricted Subsidiaries Eliminations Consolidated (In thousands) Cash flows from operating activities $ (20,262 ) $ 58,062 $ 10,736 $ (4,901 ) $ 43,635 Cash flows from investing activities Additions to properties and equipment — (7,902 ) (363 ) — (8,265 ) Proceeds from sale of assets — 424 — — 424 Distributions from UNEV in excess of earnings — 1,099 — (1,099 ) — Distributions in excess of equity in earnings of equity investments — 3,016 — — 3,016 — (3,363 ) (363 ) (1,099 ) (4,825 ) Cash flows from financing activities Net borrowings under credit agreement — 294,000 — — 294,000 Net intercompany financing activities 344,781 (344,781 ) — — — Redemption of senior notes (309,750 ) — — — (309,750 ) Proceeds from issuance of common units 39,371 (1,808 ) — — 37,563 Distributions to HEP unitholders (54,807 ) 2 — — (54,805 ) Distributions to noncontrolling interests — — (8,000 ) 6,000 (2,000 ) Distribution to HFC for El Dorado tanks (103 ) — — — (103 ) Contributions from general partner 805 (805 ) — — — Units withheld for tax withholding obligations (35 ) — — — (35 ) Other — (330 ) — — (330 ) 20,262 (53,722 ) (8,000 ) 6,000 (35,460 ) Cash and cash equivalents Decrease for the period — 977 2,373 — 3,350 Beginning of period 2 301 3,354 — 3,657 End of period $ 2 $ 1,278 $ 5,727 $ — $ 7,007

Description of Business and P24

Description of Business and Presentation of Financial Statements Accounting Policy Descriptions (Policies)	3 Months Ended
	Mar. 31, 2018
Accounting Policies [Abstract]
Consolidation, Policy	Principles of Consolidation and Common Control Transactions The consolidated financial statements include our accounts and those of subsidiaries and joint ventures that we control. All significant intercompany transactions and balances have been eliminated. Most of our acquisitions from HFC occurred while we were a consolidated variable interest entity (“VIE”) of HFC. Therefore, as an entity under common control with HFC, we recorded these acquisitions on our balance sheets at HFC's historical basis instead of our purchase price or fair value.
New Accounting Pronouncements, Policy	Accounting Pronouncements Adopted During the Periods Presented Share-Based Compensation In March 2016, an accounting standard update was issued which simplifies the accounting for employee share-based payment transactions, including the accounting for income taxes, forfeitures and statutory tax withholding requirements, as well as classification in the statement of cash flows. We adopted this standard effective January 1, 2017, with no impact to our financial condition or results of operations. The new standard also requires that employee taxes paid when an employer withholds units for tax withholding purposes be reported as financing activities in the statement of cash flows on a retrospective basis. Previously, this activity was included in our operating activities. The impact of this change for the three months ended March 31, 2017 was not material to our consolidated statement of cash flows. Finally, consistent with our existing policy, we have elected to account for forfeitures on an estimated basis. Revenue Recognition In May 2014, an accounting standard update was issued requiring revenue to be recognized when promised goods or services are transferred to customers in an amount that reflects the expected consideration for these goods or services. This standard had an effective date of January 1, 2018, and we have accounted for the new guidance using the modified retrospective implementation method, whereby a cumulative effect adjustment is recorded to retained earnings as of the date of initial application. In preparing for adoption, we evaluated the terms, conditions and performance obligations under our existing contracts with customers. Furthermore, we implemented policies to comply with this new standard. See Note 3 for additional information on our revenue recognition policies. Business Combinations In December 2014, an accounting standard update was issued to provide new guidance on the definition of a business in relation to accounting for identifiable intangible assets in business combinations. This standard had an effective date of January 1, 2018, and had no effect on our financial condition, results of operations or cash flows. Financial Assets and Liabilities In January 2016, an accounting standard update was issued requiring changes in the accounting and disclosures for financial instruments. This standard was effective beginning with our 2018 reporting year and had no effect on our financial condition, results of operations or cash flows. Accounting Pronouncements Not Yet Adopted Leases In February 2016, an accounting standard update was issued requiring leases to be measured and recognized as a lease liability, with a corresponding right-of-use asset on the balance sheet. This standard has an effective date of January 1, 2019, and we are evaluating the impact of this standard. In preparing for adoption, we have identified, reviewed and evaluated contracts containing lease and embedded lease arrangements. Additionally, we have acquired software and are implementing systems to facilitate lease capture and related accounting treatment.
Revenue Recognition, Policy	Revenues are generally recognized as products are shipped through our pipelines and terminals, feedstocks are processed through our refinery processing units or other services are rendered. The majority of our contracts with customers meet the definition of a lease since (1) performance of the contracts is dependent on specified property, plant, or equipment and (2) it is remote that one or more parties other than the customer will take more than a minor amount of the output associated with the specified property, plant, or equipment. Therefore, we bifurcate the consideration received between lease and service revenue.

Acquisitions (Tables)

Acquisitions (Tables)	3 Months Ended
Acquisitions (Tables)	Mar. 31, 2018
Business Acquisition [Line Items]
Schedule of Recognized Identified Assets Acquired and Liabilities Assumed [Table Text Block]	The following summarizes the value of assets and liabilities acquired: (in thousands) Cash and cash equivalents $ 4,609 Accounts receivable 4,919 Prepaid and other current assets 253 Properties and equipment 277,016 Intangible assets 70,182 Goodwill 11,615 Accounts payable (3,311 ) Accrued property taxes (1,438 ) Other current liabilities (65 ) Net assets acquired $ 363,780

Revenues (Tables)

Revenues (Tables)	3 Months Ended
Revenues (Tables)	Mar. 31, 2018
Revenue from Contract with Customer [Abstract]
Schedule of Cumulative Effect of Adjustment	The following table reflects the cumulative effect of adoption as of January 1, 2018: Prior to Adoption Increase (Decrease) As Adjusted (In millions) Deferred revenue $ 9,598 $ (1,320 ) $ 8,278 Partners’ equity: Common unitholders $ 393,959 $ 1,320 $ 395,279
Schedule of Contract Asset and Contract Liability Balances	March 31, January 1, (In thousands) Contract asset $ 1,711 $ — Contract liability $ (2,479 ) $ (2,713 )
Schedule of Future Performance Obligations	We expect to recognize revenue for these unfulfilled performance obligation as shown in the table below (amounts shown in table include both service and lease revenues): Years Ending December 31, (In millions) Remainder of 2018 $ 284 2019 350 2020 300 2021 293 2022 267 Thereafter 1,004 Total $ 2,498
Schedule of Disaggregated Revenue	Disaggregated revenues are as follows: Three Months Ended March 31, 2018 2017 (In thousands) Pipelines $ 72,169 $ 52,447 Terminals, tanks and loading racks 38,181 33,807 Refinery processing units 18,534 19,380 $ 128,884 $ 105,634

Financial Instruments (Tables)

Financial Instruments (Tables)	3 Months Ended
Financial Instruments (Tables)	Mar. 31, 2018
Fair Value Disclosures [Abstract]
Schedule of Fair Value, Financial Instruments Measured on Recurring Basis	The carrying amounts and estimated fair values of our senior notes were as follows: March 31, 2018 December 31, 2017 Financial Instrument Fair Value Input Level Carrying Value Fair Value Carrying Value Fair Value (In thousands) Liabilities: 6% Senior notes Level 2 495,452 511,740 495,308 525,120 $ 495,452 $ 511,740 $ 495,308 $ 525,120

Properties and Equipment (Table

Properties and Equipment (Tables)	3 Months Ended
Properties and Equipment (Tables)	Mar. 31, 2018
Property, Plant and Equipment [Abstract]
Properties and Equipment	The carrying amounts of our properties and equipment are as follows: March 31, December 31, (In thousands) Pipelines, terminals and tankage $ 1,541,596 $ 1,541,722 Refinery assets 347,338 347,338 Land and right of way 86,445 86,484 Construction in progress 24,134 12,029 Other 36,210 35,659 2,035,723 2,023,232 Less accumulated depreciation 474,669 453,761 $ 1,561,054 $ 1,569,471

Intangible Assets (Tables)

Intangible Assets (Tables)	3 Months Ended
Intangible Assets (Tables)	Mar. 31, 2018
Goodwill and Intangible Assets Disclosure [Abstract]
Schedule of Finite-Lived Intangible Assets by Major Class	The carrying amounts of our intangible assets are as follows: Useful Life March 31, December 31, (In thousands) Delek transportation agreement 30 years $ 59,933 $ 59,933 HFC transportation agreement 10-15 years 75,131 75,131 Customer relationships 10 years 69,282 69,282 Other 50 50 204,396 204,396 Less accumulated amortization 78,969 74,933 $ 125,427 $ 129,463

Employees, Retirement and Inc30

Employees, Retirement and Incentive Plans (Tables)	3 Months Ended
Employees, Retirement and Incentive Plans (Tables)	Mar. 31, 2018
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]
Schedule of Nonvested Restricted Stock Units Activity	A summary of restricted and phantom unit activity and changes during the three months ended March 31, 2018 , is presented below: Restricted and Phantom Units Units Weighted Average Grant-Date Fair Value Outstanding at January 1, 2018 (nonvested) 119,009 $ 34.77 Granted 12,890 30.23 Outstanding at March 31, 2018 (nonvested) 131,899 $ 34.33
Schedule of Nonvested Performance-based Units Activity	A summary of performance unit activity and changes for the three months ended March 31, 2018 , is presented below: Performance Units Units Outstanding at January 1, 2018 (nonvested) 36,911 Granted 2,764 Vesting and transfer of common units to recipients (4,283 ) Outstanding at March 31, 2018 (nonvested) 35,392

Debt (Tables)

Debt (Tables)	3 Months Ended
Debt (Tables)	Mar. 31, 2018
Debt Instruments [Abstract]
Schedule of Long-term Debt Instruments	The carrying amounts of our long-term debt are as follows: March 31, December 31, (In thousands) Credit Agreement Amount outstanding $ 895,500 $ 1,012,000 6% Senior Notes Principal 500,000 500,000 Unamortized premium and debt issuance costs (4,548 ) (4,692 ) 495,452 495,308 Total long-term debt $ 1,390,952 $ 1,507,308
Schedule of Interest Expense and Other Debt Information	Interest expense consists of the following components: Three Months Ended March 31, 2018 2017 (In thousands) Interest on outstanding debt: Credit Agreement, net of interest on interest rate swaps $ 8,944 $ 6,449 6.5% Senior Notes — 162 6% Senior Notes 7,500 6,000 Amortization of discount and deferred debt issuance costs 757 770 Commitment fees and other 477 354 Total interest incurred 17,678 13,735 Less capitalized interest 97 196 Net interest expense $ 17,581 $ 13,539 Cash paid for interest $ 16,599 $ 26,517

Significant Customers (Tables)

Significant Customers (Tables)	3 Months Ended
Significant Customers (Tables)	Mar. 31, 2018
Risks and Uncertainties [Abstract]
Schedules of Concentration of Risk, by Risk Factor	The following table presents the percentage of total revenues generated by each of these customers: Three Months Ended March 31, 2018 2017 HFC 79 % 84 % Delek 5 % 8 %

Partners' Equity (Tables)

Partners' Equity (Tables)	3 Months Ended
Partners' Equity (Tables)	Mar. 31, 2018
Partners' Capital [Abstract]
Schedule of Allocation of General Partner Interest in Net Income	The following table presents the allocation of the general partner interest in net income for the periods presented below: Three Months Ended March 31, 2018 2017 (In thousands) General partner interest in net income $ — $ 511 General partner incentive distribution — 16,627 Total general partner interest in net income $ — $ 17,138 For purposes of applying the two-class method, including the allocation of cash distributions in excess of earnings, net income per limited partner unit is computed as follows: Three Months Ended 2018 2017 (In thousands) Net income attributable to the partners $ 46,168 $ 25,563 Less: General partner’s distribution declared (including IDRs) — (17,775 ) Limited partner’s distribution declared on common units (66,551 ) (39,632 ) Distributions in excess of net income attributable to the partners $ (20,383 ) $ (31,844 )
Schedule of Distributions Made to Members or Limited Partners	The following table presents the allocation of our regular quarterly cash distributions to the general and limited partners for the periods in which they apply. Our distributions are declared subsequent to quarter end; therefore, the amounts presented do not reflect distributions paid during the periods presented below. Three Months Ended March 31, 2018 2017 (In thousands, except per unit data) General partner interest in distribution $ — $ 1,148 General partner incentive distribution — 16,627 Total general partner distribution — 17,775 Limited partner distribution 66,551 39,632 Total regular quarterly cash distribution $ 66,551 $ 57,407 Cash distribution per unit applicable to limited partners $ 0.6550 $ 0.6200

Net Income per Limited Partne34

Net Income per Limited Partner Unit (Tables)	3 Months Ended
Net Income per Limited Partner Unit (Tables)	Mar. 31, 2018
Net Income per Limited Partner Unit [Abstract]
Schedule of Allocation of General Partner Interest in Net Income [Table Text Block]	The following table presents the allocation of the general partner interest in net income for the periods presented below: Three Months Ended March 31, 2018 2017 (In thousands) General partner interest in net income $ — $ 511 General partner incentive distribution — 16,627 Total general partner interest in net income $ — $ 17,138 For purposes of applying the two-class method, including the allocation of cash distributions in excess of earnings, net income per limited partner unit is computed as follows: Three Months Ended 2018 2017 (In thousands) Net income attributable to the partners $ 46,168 $ 25,563 Less: General partner’s distribution declared (including IDRs) — (17,775 ) Limited partner’s distribution declared on common units (66,551 ) (39,632 ) Distributions in excess of net income attributable to the partners $ (20,383 ) $ (31,844 )
Earnings per Unit by Type of Partner [Table Text Block]	General Partner (including IDRs) Limited Partners’ Common Units Total (In thousands, except per unit data) Three Months Ended March 31, 2018 Net income attributable to the partners: Distributions declared $ — $ 66,551 $ 66,551 Distributions in excess of net income attributable to the partners (20,383 ) (20,383 ) Net income attributable to the partners $ — $ 46,168 $ 46,168 Weighted average limited partners' units outstanding 103,836 Limited partners' per unit interest in earnings - basic and diluted $ 0.44 Three Months Ended March 31, 2017 Net income attributable to the partners: Distributions declared $ 17,775 $ 39,632 $ 57,407 Distributions in excess of net income attributable to the partners (637 ) (31,207 ) (31,844 ) Net income attributable to the partners $ 17,138 $ 8,425 $ 25,563 Weighted average limited partners' units outstanding 63,113 Limited partners' per unit interest in earnings - basic and diluted $ 0.13

Segments Segment disclosure (Ta

Segments Segment disclosure (Tables)	3 Months Ended
Segments Segment disclosure (Tables)	Mar. 31, 2018
Segment Reporting Information [Line Items]
Segment Reporting Disclosure [Text Block]	Operating Segments Although financial information is reviewed by our chief operating decision makers from a variety of perspectives, they view the business in two operating segments: pipelines and terminals, and refinery processing units. These operating segments adhere to the accounting polices used for our consolidated financial statements. The pipelines and terminals segment has been aggregated as both pipeline and terminals (1) have similar economic characteristics,(2) similarly provide logistics services of transportation and storage of petroleum products, (3) similarly support the petroleum refining business, including distribution of its products, (4) have principally the same customers and (5) are subject to similar regulatory requirements. We evaluate the performance of each segment based on its respective operating income. Certain general and administrative expenses and interest and financing costs are excluded from segment operating income as they are not directly attributable to a specific operating segment. Identifiable assets are those used by the segment, whereas other assets are principally equity method investments, cash, deposits and other assets that are not associated with a specific reportable operating segment. Three Months Ended March 31, 2018 2017 Revenues: Pipelines and terminals - affiliate $ 82,894 $ 69,645 Pipelines and terminals - third-party 27,456 16,609 Refinery processing units - affiliate 18,534 19,380 Total segment revenues $ 128,884 $ 105,634 Segment operating income: Pipelines and terminals $ 60,213 $ 46,485 Refinery processing units 7,327 7,883 Total segment operating income 67,540 54,368 Unallocated general and administrative expenses (3,122 ) (2,634 ) Interest and financing costs, net (17,066 ) (25,662 ) Equity in earnings of unconsolidated affiliates 1,279 1,840 Gain on sale of assets and other 86 73 Income before income taxes $ 48,717 $ 27,985 Capital Expenditures: Pipelines and terminals $ 12,612 $ 8,129 Refinery processing units — 136 Total capital expenditures $ 12,612 $ 8,265 March 31, 2018 December 31, 2017 (in thousands) Identifiable assets: Pipelines and terminals (1) $ 1,711,880 $ 1,728,074 Refinery processing units 324,570 328,585 Other 98,339 97,455 Total identifiable assets $ 2,134,789 $ 2,154,114 (1) Includes goodwill of $268.2 million and $266.7 million as of March 31, 2018 and December 31, 2017 , respectively.
Schedule of Segment Reporting Information, by Segment [Table Text Block]	We evaluate the performance of each segment based on its respective operating income. Certain general and administrative expenses and interest and financing costs are excluded from segment operating income as they are not directly attributable to a specific operating segment. Identifiable assets are those used by the segment, whereas other assets are principally equity method investments, cash, deposits and other assets that are not associated with a specific reportable operating segment. Three Months Ended March 31, 2018 2017 Revenues: Pipelines and terminals - affiliate $ 82,894 $ 69,645 Pipelines and terminals - third-party 27,456 16,609 Refinery processing units - affiliate 18,534 19,380 Total segment revenues $ 128,884 $ 105,634 Segment operating income: Pipelines and terminals $ 60,213 $ 46,485 Refinery processing units 7,327 7,883 Total segment operating income 67,540 54,368 Unallocated general and administrative expenses (3,122 ) (2,634 ) Interest and financing costs, net (17,066 ) (25,662 ) Equity in earnings of unconsolidated affiliates 1,279 1,840 Gain on sale of assets and other 86 73 Income before income taxes $ 48,717 $ 27,985 Capital Expenditures: Pipelines and terminals $ 12,612 $ 8,129 Refinery processing units — 136 Total capital expenditures $ 12,612 $ 8,265 March 31, 2018 December 31, 2017 (in thousands) Identifiable assets: Pipelines and terminals (1) $ 1,711,880 $ 1,728,074 Refinery processing units 324,570 328,585 Other 98,339 97,455 Total identifiable assets $ 2,134,789 $ 2,154,114 (1) Includes goodwill of $268.2 million and $266.7 million as of March 31, 2018 and December 31, 2017 , respectively.

Supplemental Guarantor _ Non-36

Supplemental Guarantor / Non-Guarantor Financial Information (Tables)	3 Months Ended
	Mar. 31, 2018
Supplemental Guarantor / Non-Guarantor Financial Information [Abstract]
Condensed Consolidating Balance Sheet	Condensed Consolidating Balance Sheet March 31, 2018 Parent Guarantor Restricted Subsidiaries Non-Guarantor Non-Restricted Subsidiaries Eliminations Consolidated (In thousands) ASSETS Current assets: Cash and cash equivalents $ 2 $ 1,485 $ 7,078 $ — $ 8,565 Accounts receivable — 51,428 4,935 (198 ) 56,165 Prepaid and other current assets 226 2,427 355 — 3,008 Total current assets 228 55,340 12,368 (198 ) 67,738 Properties and equipment, net — 1,204,672 356,382 — 1,561,054 Investment in subsidiaries 1,879,597 272,530 — (2,152,127 ) — Intangible assets, net — 125,427 — — 125,427 Goodwill — 268,166 — — 268,166 Equity method investments — 84,678 — — 84,678 Other assets 11,096 16,630 — — 27,726 Total assets $ 1,890,921 $ 2,027,443 $ 368,750 $ (2,152,325 ) $ 2,134,789 LIABILITIES AND EQUITY Current liabilities: Accounts payable $ — $ 20,691 $ 3,461 $ (198 ) $ 23,954 Accrued interest 6,079 — — — 6,079 Deferred revenue — 8,497 — — 8,497 Accrued property taxes — 4,423 1,713 — 6,136 Other current liabilities 226 7,376 — — 7,602 Total current liabilities 6,305 40,987 5,174 (198 ) 52,268 Long-term debt 1,390,952 — — — 1,390,952 Other long-term liabilities 260 15,249 202 — 15,711 Deferred revenue — 47,740 — — 47,740 Class B unit — 43,870 — — 43,870 Equity - partners 493,404 1,879,597 272,530 (2,152,127 ) 493,404 Equity - noncontrolling interest — — 90,844 — 90,844 Total liabilities and equity $ 1,890,921 $ 2,027,443 $ 368,750 $ (2,152,325 ) $ 2,134,789 Condensed Consolidating Balance Sheet December 31, 2017 Parent Guarantor Restricted Subsidiaries Non-Guarantor Non-Restricted Subsidiaries Eliminations Consolidated (In thousands) ASSETS Current assets: Cash and cash equivalents $ 2 $ 511 $ 7,263 $ — $ 7,776 Accounts receivable — 59,448 5,038 (182 ) 64,304 Prepaid and other current assets 13 2,016 282 — 2,311 Total current assets 15 61,975 12,583 (182 ) 74,391 Properties and equipment, net — 1,213,626 355,845 — 1,569,471 Investment in subsidiaries 1,902,285 273,319 — (2,175,604 ) — Intangible assets, net — 129,463 — — 129,463 Goodwill — 266,716 — — 266,716 Equity method investments — 85,279 — — 85,279 Other assets 11,753 17,041 — — 28,794 Total assets $ 1,914,053 $ 2,047,419 $ 368,428 $ (2,175,786 ) $ 2,154,114 LIABILITIES AND EQUITY Current liabilities: Accounts payable $ — $ 20,928 $ 1,526 $ (182 ) $ 22,272 Accrued interest 12,500 756 — — 13,256 Deferred revenue — 8,540 1,058 — 9,598 Accrued property taxes — 3,431 1,221 — 4,652 Other current liabilities — 5,707 — — 5,707 Total current liabilities 12,500 39,362 3,805 (182 ) 55,485 Long-term debt 1,507,308 — — — 1,507,308 Other long-term liabilities 286 15,359 198 — 15,843 Deferred revenue — 47,272 — — 47,272 Class B unit — 43,141 — — 43,141 Equity - partners 393,959 1,902,285 273,319 (2,175,604 ) 393,959 Equity - noncontrolling interest — — 91,106 — 91,106 Total liabilities and equity $ 1,914,053 $ 2,047,419 $ 368,428 $ (2,175,786 ) $ 2,154,114
Condensed Consolidating Statement of Comprehensive Income	Condensed Consolidating Statement of Comprehensive Income Three Months Ended March 31, 2018 Parent Guarantor Restricted Subsidiaries Non-Guarantor Non-restricted Subsidiaries Eliminations Consolidated (In thousands) Revenues: Affiliates $ — $ 94,291 $ 7,137 $ — $ 101,428 Third parties — 19,978 7,478 — 27,456 — 114,269 14,615 — 128,884 Operating costs and expenses: Operations (exclusive of depreciation and amortization) — 32,664 3,538 — 36,202 Depreciation and amortization 21,001 4,141 — 25,142 General and administrative 1,280 1,842 — — 3,122 1,280 55,507 7,679 — 64,466 Operating income (loss) (1,280 ) 58,762 6,936 — 64,418 Other income (expense): Equity in earnings of subsidiaries 65,052 5,212 — (70,264 ) — Equity in earnings of equity method investments — 1,279 — — 1,279 Interest expense (17,649 ) 68 — — (17,581 ) Interest income — 515 — — 515 Gain on sale of assets and other 45 28 13 — 86 47,448 7,102 13 (70,264 ) (15,701 ) Income before income taxes 46,168 65,864 6,949 (70,264 ) 48,717 State income tax expense — (82 ) — — (82 ) Net income 46,168 65,782 6,949 (70,264 ) 48,635 Allocation of net income attributable to noncontrolling interests — (730 ) (1,737 ) — (2,467 ) Net income attributable to the partners 46,168 65,052 5,212 (70,264 ) 46,168 Other comprehensive income — — — — — Comprehensive income attributable to the partners $ 46,168 $ 65,052 $ 5,212 $ (70,264 ) $ 46,168 Condensed Consolidating Statement of Comprehensive Income Three Months Ended March 31, 2017 Parent Guarantor Restricted Subsidiaries Non-Guarantor Non-Restricted Subsidiaries Eliminations Consolidated (In thousands) Revenues: Affiliates $ — $ 80,776 $ 8,249 $ — $ 89,025 Third parties — 11,003 5,606 — 16,609 — 91,779 13,855 — 105,634 Operating costs and expenses: Operations (exclusive of depreciation and amortization) — 29,092 3,397 — 32,489 Depreciation and amortization — 14,853 3,924 — 18,777 General and administrative 1,155 1,479 — — 2,634 1,155 45,424 7,321 — 53,900 Operating income (loss) (1,155 ) 46,355 6,534 — 51,734 Other income (expense): Equity in earnings of subsidiaries 45,283 4,901 — (50,184 ) — Equity in earnings of equity method investments — 1,840 — — 1,840 Interest expense (6,340 ) (7,199 ) — — (13,539 ) Interest income — 102 — — 102 Loss on early extinguishment of debt (12,225 ) — — — (12,225 ) Gain on sale of assets and other — 72 1 — 73 26,718 (284 ) 1 (50,184 ) (23,749 ) Income before income taxes 25,563 46,071 6,535 (50,184 ) 27,985 State income tax expense — (106 ) — — (106 ) Net income 25,563 45,965 6,535 (50,184 ) 27,879 Allocation of net income attributable to noncontrolling interests — (682 ) (1,634 ) — (2,316 ) Net income attributable to the partners 25,563 45,283 4,901 (50,184 ) 25,563 Other comprehensive income 63 63 — (63 ) 63 Comprehensive income attributable to the partners $ 25,626 $ 45,346 $ 4,901 $ (50,247 ) $ 25,626
Condensed Consolidating Statement of Cash Flows	Condensed Consolidating Statement of Cash Flows Three Months Ended March 31, 2018 Parent Guarantor Restricted Subsidiaries Non-Guarantor Non-Restricted Subsidiaries Eliminations Consolidated (In thousands) Cash flows from operating activities $ (23,679 ) $ 98,013 $ 11,398 $ (5,212 ) $ 80,520 Cash flows from investing activities Additions to properties and equipment — (9,029 ) (3,583 ) — (12,612 ) Distributions from UNEV in excess of earnings — 788 — (788 ) — Proceeds from sale of assets — 22 — — 22 Distributions in excess of equity in earnings of equity investments — 358 — — 358 — (7,861 ) (3,583 ) (788 ) (12,232 ) Cash flows from financing activities Net repayments under credit agreement (116,500 ) — — — (116,500 ) Net intercompany financing activities 89,060 (89,060 ) — — — Proceeds from issuance of common units 114,376 153 — — 114,529 Contribution from general partner 297 — — — 297 Distributions to HEP unitholders (63,496 ) — — — (63,496 ) Distributions to noncontrolling interests — — (8,000 ) 6,000 (2,000 ) Units withheld for tax withholding obligations (58 ) — — — (58 ) Deferred financing cost — 6 — — 6 Other — (277 ) — — (277 ) 23,679 (89,178 ) (8,000 ) 6,000 (67,499 ) Cash and cash equivalents Increase (decrease) for the period — 974 (185 ) — 789 Beginning of period 2 511 7,263 — 7,776 End of period $ 2 $ 1,485 $ 7,078 $ — $ 8,565 Condensed Consolidating Statement of Cash Flows Three Months Ended March 31, 2017 Parent Guarantor Restricted Subsidiaries Non-Guarantor Non-Restricted Subsidiaries Eliminations Consolidated (In thousands) Cash flows from operating activities $ (20,262 ) $ 58,062 $ 10,736 $ (4,901 ) $ 43,635 Cash flows from investing activities Additions to properties and equipment — (7,902 ) (363 ) — (8,265 ) Proceeds from sale of assets — 424 — — 424 Distributions from UNEV in excess of earnings — 1,099 — (1,099 ) — Distributions in excess of equity in earnings of equity investments — 3,016 — — 3,016 — (3,363 ) (363 ) (1,099 ) (4,825 ) Cash flows from financing activities Net borrowings under credit agreement — 294,000 — — 294,000 Net intercompany financing activities 344,781 (344,781 ) — — — Redemption of senior notes (309,750 ) — — — (309,750 ) Proceeds from issuance of common units 39,371 (1,808 ) — — 37,563 Distributions to HEP unitholders (54,807 ) 2 — — (54,805 ) Distributions to noncontrolling interests — — (8,000 ) 6,000 (2,000 ) Distribution to HFC for El Dorado tanks (103 ) — — — (103 ) Contributions from general partner 805 (805 ) — — — Units withheld for tax withholding obligations (35 ) — — — (35 ) Other — (330 ) — — (330 ) 20,262 (53,722 ) (8,000 ) 6,000 (35,460 ) Cash and cash equivalents Decrease for the period — 977 2,373 — 3,350 Beginning of period 2 301 3,354 — 3,657 End of period $ 2 $ 1,278 $ 5,727 $ — $ 7,007

Description of Business and P37

Description of Business and Presentation of Financial Statements (Details) - USD ($) $ / shares in Units, $ in Thousands	1 Months Ended	3 Months Ended
	Oct. 31, 2017	Mar. 31, 2018	Mar. 31, 2017	Dec. 31, 2017
Other Ownership Interests [Line Items]
Ownership percentage, controlling interest		57.00%
General partner interest	2.00%
Common Unit, Issued	37,250,000
Limited partner distribution	$ 2,500	$ 66,551	$ 39,632
Partners' Capital Account, Units, Sold in Private Placement		3,700,000
Sale of Stock, Price Per Share		$ 29.73
Proceeds from Issuance of Private Placement		$ 110,000
New Accounting Pronouncement or Change in Accounting Principle, Effect of Adoption, Quantification		$ 1,320
SLC Pipeline [Member]
Other Ownership Interests [Line Items]
Equity Method Investment, Ownership Percentage				75.00%
UNEV Pipeline [Member]
Other Ownership Interests [Line Items]
Equity Method Investment, Ownership Percentage		75.00%
Frontier Pipeline [Member]
Other Ownership Interests [Line Items]
Equity Method Investment, Ownership Percentage		50.00%		50.00%

Acquisitions (Details)

Acquisitions (Details) - USD ($) $ in Thousands	3 Months Ended
Acquisitions (Details) - USD ($) $ in Thousands	Dec. 31, 2017	Mar. 31, 2018	Oct. 31, 2017
Business Acquisition [Line Items]
Step Acquisition, Equity Interest in Acquiree	$ 112,000
Step Acquisition - Remeasurement Gain	36,300
Consideration Transferred	$ 363,800
Business Acquisition Purchase Price			$ 250,000
Working Capital Adjustment		$ 1,800
Assets Acquired - Cash and Equivalents			4,609
Assets Acquired - Receivables			4,919
Assets Acquired - Prepaid and other Current Assets			253
Assets Acquired - Properties and Equipment			277,016
Assets Acquired - Intangible Assets			70,182
Goodwill			11,615
Liabilities Assumed - Accounts Payable			(3,311)
Liabilities Assumed - Accrued Property Taxes			(1,438)
Liabilities Assumed - Other Current Liabilities			(65)
Net Assets Acquired			$ 363,780
SLC Pipeline [Member]
Business Acquisition [Line Items]
Equity Method Investment, Ownership Percentage	75.00%
Frontier Pipeline [Member]
Business Acquisition [Line Items]
Equity Method Investment, Ownership Percentage	50.00%	50.00%

Revenues - Schedule of Cumulati

Revenues - Schedule of Cumulative Effect of Adjustment (Details) - USD ($) $ in Thousands	Mar. 31, 2018	Jan. 01, 2018	Dec. 31, 2017
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Deferred revenue	$ 8,497	$ 8,278	$ 9,598
Partners’ equity: Common unitholders	$ 493,404	395,279	393,959
Prior to Adoption
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Deferred revenue			9,598
Partners’ equity: Common unitholders			$ 393,959
Increase (Decrease) \| Accounting Standards Update 2014-09
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Deferred revenue		(1,320)
Partners’ equity: Common unitholders		$ 1,320

Revenues - Narrative (Details)

Revenues - Narrative (Details) - USD ($) $ in Thousands	3 Months Ended
Revenues - Narrative (Details) - USD ($) $ in Thousands	Mar. 31, 2018	Dec. 31, 2017
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Operating Lease, Lease Income	$ 71,000
Recognition of Deferred Revenue	3,600
Deferred revenue, recognized	2,200
Deferred Revenue, Period Increase (Decrease)	2,500
Deferred revenue	47,740	$ 47,272
Sales Revenue, Services, Other	$ 57,900

Revenues - Narrative, Remaining

Revenues - Narrative, Remaining Performance Obligation (Details) $ in Millions	Mar. 31, 2018USD ($)
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2018-04-01
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Unfulfilled performance obligations	$ 284
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2019-01-01
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Unfulfilled performance obligations	350
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2020-01-01
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Unfulfilled performance obligations	300
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2021-01-01
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Unfulfilled performance obligations	293
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2022-01-01
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Unfulfilled performance obligations	267
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2023-01-01
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Unfulfilled performance obligations	1,004
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: (nil)
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Unfulfilled performance obligations	$ 2,498

Revenues - Schedule of Future P

Revenues - Schedule of Future Performance Obligations (Details) $ in Millions	3 Months Ended
	Mar. 31, 2018USD ($)
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2018-04-01
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Unfulfilled performance obligations	$ 284
Unfulfilled performance obligations, expected timing	9 months
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2019-01-01
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Unfulfilled performance obligations	$ 350
Unfulfilled performance obligations, expected timing	1 year
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2020-01-01
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Unfulfilled performance obligations	$ 300
Unfulfilled performance obligations, expected timing	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]
Unfulfilled performance obligations	$ 293
Unfulfilled performance obligations, expected timing	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]
Unfulfilled performance obligations	$ 267
Unfulfilled performance obligations, expected timing	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]
Unfulfilled performance obligations	$ 2,498
Unfulfilled performance obligations, expected timing

Revenues - Schedule of Contract

Revenues - Schedule of Contract Asset and Liability Balances (Details) - USD ($) $ in Thousands	Mar. 31, 2018	Jan. 01, 2018
Revenue from Contract with Customer [Abstract]
Contract asset	$ 1,711	$ 0
Contract liability	$ (2,479)	$ (2,713)

Revenues - Schedule of Disaggre

Revenues - Schedule of Disaggregated Revenue (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Disaggregation of Revenue [Line Items]
Disaggregated Revenue	$ 128,884	$ 105,634
Pipelines
Disaggregation of Revenue [Line Items]
Disaggregated Revenue	72,169	52,447
Terminals, tanks and loading racks
Disaggregation of Revenue [Line Items]
Disaggregated Revenue	38,181	33,807
Refinery processing units
Disaggregation of Revenue [Line Items]
Disaggregated Revenue	$ 18,534	$ 19,380

Financial Instruments (Narrativ

Financial Instruments (Narrative) (Details) - USD ($) $ in Thousands	Mar. 31, 2018	Dec. 31, 2017
Debt Instrument [Line Items]
Senior Notes	$ 100,000
6% Senior notes [Member]
Debt Instrument [Line Items]
Senior Notes	495,452	$ 495,308
Carrying Value [Member]
Debt Instrument [Line Items]
Financial Liabilities Fair Value Disclosure	495,452	495,308
Carrying Value [Member] \| 6% Senior notes [Member]
Debt Instrument [Line Items]
Financial Liabilities Fair Value Disclosure		495,308
Fair Value [Member] \| Fair value inputs, Level 2 [Member]
Debt Instrument [Line Items]
Financial Liabilities Fair Value Disclosure	511,740	525,120
Fair Value [Member] \| 6% Senior notes [Member] \| Fair value inputs, Level 2 [Member]
Debt Instrument [Line Items]
Financial Liabilities Fair Value Disclosure	$ 511,740	$ 525,120

Properties and Equipment (Detai

Properties and Equipment (Details) - USD ($) $ in Thousands	3 Months Ended
Properties and Equipment (Details) - USD ($) $ in Thousands	Mar. 31, 2018	Mar. 31, 2017	Dec. 31, 2017
Property, Plant and Equipment [Line Items]
Properties and equipment, gross	$ 2,035,723		$ 2,023,232
Less accumulated depreciation	474,669		453,761
Properties and equipment, net	1,561,054		1,569,471
Interest costs, capitalized during period	(97)	$ (196)
Depreciation expense	20,900	$ 16,900
Pipelines, terminals and tankage
Property, Plant and Equipment [Line Items]
Properties and equipment, gross	1,541,596		1,541,722
Refinery Assets
Property, Plant and Equipment [Line Items]
Properties and equipment, gross	347,338		347,338
Land and right of way
Property, Plant and Equipment [Line Items]
Properties and equipment, gross	86,445		86,484
Construction in progress
Property, Plant and Equipment [Line Items]
Properties and equipment, gross	24,134		12,029
Other
Property, Plant and Equipment [Line Items]
Properties and equipment, gross	$ 36,210		$ 35,659

Intangible Assets (Details)

Intangible Assets (Details) - USD ($) $ in Thousands	3 Months Ended		12 Months Ended
Intangible Assets (Details) - USD ($) $ in Thousands	Mar. 31, 2018	Mar. 31, 2017	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2017
Finite-Lived Intangible Assets [Line Items]
Amortization of Intangible Assets	$ 4,000	$ 1,700
Finite-Lived Intangible Assets, Net [Abstract]
Intangible assets, gross	204,396							$ 204,396
Less accumulated amortization	78,969							74,933
Intangible assets, net	125,427							129,463
Delek transportation agreement
Finite-Lived Intangible Assets, Net [Abstract]
Intangible assets, gross	59,933							59,933
HFC transportation agreement
Finite-Lived Intangible Assets, Net [Abstract]
Intangible assets, gross	75,131							75,131
Customer relationships
Finite-Lived Intangible Assets, Net [Abstract]
Intangible assets, gross	69,282							69,282
Other
Finite-Lived Intangible Assets, Net [Abstract]
Intangible assets, gross	$ 50							$ 50
Subsequent Event [Member]
Finite-Lived Intangible Assets [Line Items]
Amortization of Intangible Assets			$ 9,800	$ 14,000,000	$ 14,000,000	$ 14,000,000	$ 14,000

Employees, Retirement and Inc48

Employees, Retirement and Incentive Plans Retirement and Benefit Plan Costs (Details) $ in Millions	3 Months Ended
	Mar. 31, 2018USD ($)Componentsshares	Mar. 31, 2017USD ($)
Share-based Compensation Arrangements
Employee benefits and share-based compensation \| $	$ 1.8	$ 1.7
Long-term Incentive Plan, Components \| Components	4
Compensation costs of incentive awards \| $	$ 0.8	$ 0.3
Deferred Bonus [Member]
Share-based Compensation Arrangements
Units authorized under equity-based compensation plans (new) \| shares	2,500,000
Number of units available for grant \| shares	1,323,089

Employees, Retirement and Inc49

Employees, Retirement and Incentive Plans Restricted Units (Details) - USD ($) $ / shares in Units, $ in Millions	3 Months Ended
	Mar. 31, 2018	Dec. 31, 2017
Restricted and Phantom Units
Share-based Compensation Arrangements
Nonvested restricted units outstanding	131,899	119,009
Weighted average grant date fair value	$ 34.33	$ 34.77
Granted	12,890
Weighted Average Grant Date Fair Value	$ 30.23
Total unrecognized compensation related to nonvested units	$ 2.3
Weighted average remaining contractual term (years)	1 year 4 months
Performance Shares [Member]
Share-based Compensation Arrangements
Nonvested restricted units outstanding	35,392	36,911
Granted	2,764
Total unrecognized compensation related to nonvested units	$ 0.8
Weighted average remaining contractual term (years)	1 year 9 months
Minimum [Member] \| Restricted Stock [Member]
Share-based Compensation Arrangements
Award Vesting Period	1 year
Maximum [Member] \| Restricted Stock [Member]
Share-based Compensation Arrangements
Award Vesting Period	3 years

Employees, Retirement and Inc50

Employees, Retirement and Incentive Plans Performance Units (Details) $ in Millions	3 Months Ended
	Mar. 31, 2018USD ($)shares
Share-based Compensation Arrangement Instruments [Roll Forward]
Weighted Average Fair Value of Units Outstanding \| $	$ 1.2
Performance Shares [Member]
Share-based Compensation Arrangements
Estimated Share Payouts Unit Awards Minimum	100.00%
Estimated Share Payouts Unit Awards Maximum	150.00%
Share-based Compensation Arrangement Instruments [Roll Forward]
Outstanding at January 1, 2018 (nonvested)	36,911
Granted	2,764
Vesting and transfer of common units to recipients	(4,283)
Outstanding at March 31, 2018 (nonvested)	35,392
Fair value of vested units transferred to recipients \| $	$ 0.1
Total unrecognized compensation related to nonvested units \| $	$ 0.8
Weighted average remaining contractual term (years)	1 year 9 months
Restricted and Phantom Units
Share-based Compensation Arrangement Instruments [Roll Forward]
Outstanding at January 1, 2018 (nonvested)	119,009
Granted	12,890
Outstanding at March 31, 2018 (nonvested)	131,899
Total unrecognized compensation related to nonvested units \| $	$ 2.3
Weighted average remaining contractual term (years)	1 year 4 months
Executive Officer [Member] \| Performance Shares [Member]
Share-based Compensation Arrangements
Estimated Share Payouts Unit Awards Minimum	50.00%
Estimated Share Payouts Unit Awards Maximum	150.00%

Debt Senior Notes (Details)

Debt Senior Notes (Details) - USD ($) $ in Thousands	3 Months Ended
Debt Senior Notes (Details) - USD ($) $ in Thousands	Mar. 31, 2018	Mar. 31, 2017	Dec. 31, 2017	Jun. 30, 2017
Debt Instrument [Line Items]
Line of Credit Facility, Maximum Borrowing Capacity	$ 1,400,000
Line of Credit Facility, Expiration Date	Jul. 1, 2022
Line of Credit Facility, Capacity Available for Trade Purchases	$ 50,000
Line of Credit Facility, Accordion Feature	300,000
Senior Notes	100,000
Loss on early extinguishment of debt	$ 0	$ (12,225)
6.5% Senior Notes [Member]
Debt Instrument [Line Items]
Principal		$ 300,000
Stated interest rate, senior notes	6.50%	6.50%
Senior Notes Aggregate Redemption Amount		$ 309,800
Loss on early extinguishment of debt		12,200
Unamortized Premium		9,800
Unamortized Discount		$ 2,400
6% Senior notes [Member]
Debt Instrument [Line Items]
Principal	$ 500,000		$ 500,000	$ 400,000
Senior Notes	$ 495,452		$ 495,308
Stated interest rate, senior notes	6.00%

Debt Long-Term Debt (Details)

Debt Long-Term Debt (Details) - USD ($) $ in Thousands	Mar. 31, 2018	Dec. 31, 2017	Jun. 30, 2017	Mar. 31, 2017
Debt Instrument [Line Items]
Credit Agreement	$ 895,500	$ 1,012,000
Senior Notes	100,000
Total long-term debt	1,390,952	1,507,308
6% Senior notes [Member]
Debt Instrument [Line Items]
Principal	500,000	500,000	$ 400,000
Unamortized discount	(4,548)	(4,692)
Senior Notes	$ 495,452	$ 495,308
6.5% Senior Notes [Member]
Debt Instrument [Line Items]
Principal				$ 300,000

Debt Interest Rate Risk Managem

Debt Interest Rate Risk Management (Details) - USD ($) $ in Thousands	Mar. 31, 2018	Dec. 31, 2017
Debt Instrument [Line Items]
Line of credit facility, amount outstanding	$ 895,500	$ 1,012,000
London Interbank Offered Rate (LIBOR) [Member] \| Interest Rate Swap [Member] \| Cash Flow Hedging [Member]
Debt Instrument [Line Items]
Line of credit facility, amount outstanding	$ 150,000	$ 0

Debt Interest Expense and Other

Debt Interest Expense and Other Debt Information (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Debt Instrument [Line Items]
Interest expense, debt	$ 17,678	$ 13,735
Less capitalized interest	97	196
Interest expense	17,581	13,539
Cash paid for interest	16,599	26,517
Revolving Credit Facility [Member]
Debt Instrument [Line Items]
Interest expense, debt	8,944	6,449
Senior Notes [Member] \| 6.5% Senior Notes [Member]
Debt Instrument [Line Items]
Interest expense, debt	0	162
Senior Notes [Member] \| 6% Senior notes [Member]
Debt Instrument [Line Items]
Interest expense, debt	7,500	6,000
Amortization discount and deferred debt issuance costs [Member]
Debt Instrument [Line Items]
Interest expense, debt	757	770
Commitment Fees and Other [Member]
Debt Instrument [Line Items]
Interest expense, debt	$ 477	$ 354

Debt Debt Capital Leases (Detai

Debt Debt Capital Leases (Details) - USD ($) $ in Millions	3 Months Ended
Debt Debt Capital Leases (Details) - USD ($) $ in Millions	Mar. 31, 2018	Dec. 31, 2017
Capital Leased Assets [Line Items]
Capital Lease Obligations	$ 2.2	$ 1.9
Capital Leased Assets, Gross	5.7	5.1
Capital Leases Accumulated Depreciation	$ 3.5	$ 3.3
Minimum [Member]
Capital Leased Assets [Line Items]
Capital Leases, Term of Contract	33 months
Maximum [Member]
Capital Leased Assets [Line Items]
Capital Leases, Term of Contract	48 months

Significant Customers (Details)

Significant Customers (Details) - Sales Revenue, Net [Member] - Customers	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Revenue, Major Customer [Line Items]
Concentration risk, percentage of total sales	84.10%
Concentration risk, number of significant customers	2
HFC [Member]
Revenue, Major Customer [Line Items]
Concentration risk, percentage of total sales	79.00%	84.00%
Delek [Member]
Revenue, Major Customer [Line Items]
Concentration risk, percentage of total sales	5.00%	8.00%

Related Party Transactions (Nar

Related Party Transactions (Narrative) (Details) - USD ($) $ in Thousands	1 Months Ended	3 Months Ended
	Oct. 31, 2017	Mar. 31, 2018	Dec. 31, 2017	Mar. 31, 2017
Related Party Transaction [Line Items]
Administrative Fee, Related Party		$ 2,500
Revenue from related parties		101,428		$ 89,025
Omnibus Agreement G & A Expenses, Related Party		600
Employee expenses reimbursed to related party		12,700		11,400
Reimbursements received from related parties		1,200		1,300
Accounts receivable due from HFC		41,600	$ 51,500
Accounts payable to HFC		10,741	7,725
Shortfall Payments, Revenue Recognized		2,200
Operating Lease, Lease Income		500		100
General partner interest	2.00%
Common Unit, Issued	37,250,000
Limited partner distribution	$ 2,500	66,551		39,632
Affiliated Entity
Related Party Transaction [Line Items]
Minimum annualized payments		332,700
Distributions to HEP unitholders		36,300		$ 30,300
Shortfall Payments
Related Party Transaction [Line Items]
Shortfall Billings Deferred Revenue		$ 900	$ 4,400

Partners' Equity, Issuances (De

Partners' Equity, Issuances (Details) $ / shares in Units, $ in Millions	3 Months Ended	23 Months Ended
	Mar. 31, 2018USD ($)$ / sharesshares	Mar. 31, 2018USD ($)$ / sharesshares
Capital Unit [Line Items]
Common units held by HFC \| shares	59,630,030	59,630,030
Proceeds from Issuance of Private Placement \| $	$ 110
Ownership percentage, controlling interest	57.00%	57.00%
Common Unit Issuance Program \| $	$ 200
Gross Proceeds from Issuance of Common Units \| $		$ 81.7
Partners' Capital Account, Units, Sold in Private Placement \| shares	3,700,000
Sale of Stock, Price Per Share \| $ / shares	$ 29.73	$ 29.73
Partners' Capital Account, Units, Sale of Units \| shares		2,394,076

Partners' Equity, Allocations o

Partners' Equity, Allocations of Net Income (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Partners' Capital [Abstract]
General Partner Interest in Net Income	$ 0	$ 511
General partner incentive distribution	0	16,627
Net income (Loss) Allocated to Partners After Predecessor Portion	$ 0	$ 17,138

Partners' Equity, Cash Distribu

Partners' Equity, Cash Distributions (Details) - USD ($) $ / shares in Units, $ in Thousands	Apr. 19, 2018	Oct. 31, 2017	Jun. 30, 2018	Mar. 31, 2018	Mar. 31, 2017
Distribution Payments [Line Items]
Limited partner distribution		$ 2,500		$ 66,551	$ 39,632
Partner Distributions
General partner interest				0	1,148
General partner incentive distribution				0	16,627
Total general partner distribution				0	17,775
Limited partner distribution		$ 2,500		66,551	39,632
Total regular quarterly cash distributions				$ 66,551	$ 57,407
Cash distribution per unit applicable to limited partners				$ 0.6550	$ 0.6200
Subsequent Event [Member]
Distribution Payments [Line Items]
Dividends Payable, Date Declared	Apr. 19, 2018
Partners' Capital, Distribution Amount Per Share	$ 0.6550
Dividends Payable, Date to be Paid			May 10, 2018
Dividends Payable, Date of Record			Apr. 30, 2018
Limited partner distribution			$ 2,500
Partner Distributions
Limited partner distribution			$ 2,500

Net Income per Limited Partne61

Net Income per Limited Partner Unit (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	1 Months Ended	3 Months Ended
	Oct. 31, 2017	Mar. 31, 2018	Mar. 31, 2017
Earnings per Unit by Type of Partner [Line Items]
Net income attributable to the partners		$ 46,168	$ 25,563
General Partners' Distribution Declared		0	(17,775)
Limited partner distribution declared	$ (2,500)	(66,551)	(39,632)
Distributions in Excess of Net Income Attributable to Partnership		(20,383)	(31,844)
Net Income Attributable to Partnership		46,168	25,563
Total Partner Interest in Net Income		$ 66,551	$ 57,407
Weighted average limited partners’ units outstanding		103,836	63,113
Limited partners’ per unit interest in earnings—basic and diluted:		$ 0.44	$ 0.13
General Partner [Member]
Earnings per Unit by Type of Partner [Line Items]
Distributions in Excess of Net Income Attributable to Partnership			$ (637)
Net Income Attributable to Partnership		0	17,138
Limited Partner [Member]
Earnings per Unit by Type of Partner [Line Items]
Distributions in Excess of Net Income Attributable to Partnership		(20,383)	(31,207)
Net Income Attributable to Partnership		$ 46,168	$ 8,425

Environmental Environmental (De

Environmental Environmental (Details) - USD ($)	3 Months Ended
Environmental Environmental (Details) - USD ($)	Mar. 31, 2018	Mar. 31, 2017	Dec. 31, 2017
Loss Contingencies [Line Items]
Environmental Remediation Expense	$ 0	$ 0
Accrued Environmental Expense	6,400,000		$ 6,500,000
Accrued Environmental Expense, Noncurrent	4,900,000		5,000,000
Affiliated Entity
Loss Contingencies [Line Items]
Accrued Environmental Expense	$ 700,000		$ 800,000

Segments (Details)

Segments (Details) - USD ($) $ in Thousands	3 Months Ended
Segments (Details) - USD ($) $ in Thousands	Mar. 31, 2018	Mar. 31, 2017	Dec. 31, 2017
Segment Reporting Information [Line Items]
Revenue, Net	$ 128,884	$ 105,634
Operating Income (Loss)	64,418	51,734
Segment operating profit	67,540	54,368
Unallocated general and administrative	(3,122)	(2,634)
Interest and financing costs, net	(17,066)	(25,662)
Equity in earnings of unconsolidated affiliates	1,279	1,840
Gain on sale of assets and other	86	73
Income before income taxes	48,717	27,985
Property, Plant and Equipment, Additions	12,612	8,265
Assets	2,134,789		$ 2,154,114
Goodwill	268,166		266,716
Pipelines and terminal - affiliate
Segment Reporting Information [Line Items]
Revenue, Net	82,894	69,645
Pipelines and terminals - third party
Segment Reporting Information [Line Items]
Revenue, Net	27,456	16,609
Operating Income (Loss)	60,213	46,485
Property, Plant and Equipment, Additions	12,612	8,129
Assets	1,711,880		1,728,074
Refinery processing units
Segment Reporting Information [Line Items]
Revenue, Net	18,534	19,380
Operating Income (Loss)	7,327	7,883
Property, Plant and Equipment, Additions	0	$ 136
Assets	324,570		328,585
Other
Segment Reporting Information [Line Items]
Assets	$ 98,339		$ 97,455

Supplemental Guarantor _ Non-64

Supplemental Guarantor / Non-Guarantor Financial Information Condensed Consolidated Balance Sheet (Details) - USD ($) $ in Thousands	Mar. 31, 2018	Jan. 01, 2018	Dec. 31, 2017	Mar. 31, 2017	Dec. 31, 2016
Current assets:
Cash and cash equivalents	$ 8,565		$ 7,776	$ 7,007	$ 3,657
Accounts receivable	56,165		64,304
Prepaid and other current assets	3,008		2,311
Total current assets	67,738		74,391
Properties and equipment, net	1,561,054		1,569,471
Investment in subsidiaries	0		0
Intangible assets, net	125,427		129,463
Goodwill	268,166		266,716
Equity method investments	84,678		85,279
Other assets	27,726		28,794
Assets	2,134,789		2,154,114
Current liabilities:
Accounts payable	23,954		22,272
Accrued interest	6,079		13,256
Deferred revenue	8,497	$ 8,278	9,598
Accrued property taxes	6,136		4,652
Other current liabilities	7,602		5,707
Total current liabilities	52,268		55,485
Long-term debt	1,390,952		1,507,308
Other long-term liabilities	15,711		15,843
Deferred revenue	47,740		47,272
Class B unit	43,870		43,141
Equity - partners	493,404		393,959
Equity - noncontrolling interest	90,844		91,106
Total liabilities and equity	2,134,789		2,154,114
Parent Company [Member]
Current assets:
Cash and cash equivalents	2		2	2	2
Accounts receivable	0		0
Prepaid and other current assets	226		13
Total current assets	228		15
Properties and equipment, net	0		0
Investment in subsidiaries	1,879,597		1,902,285
Intangible assets, net	0		0
Goodwill	0		0
Equity method investments	0		0
Other assets	11,096		11,753
Assets	1,890,921		1,914,053
Current liabilities:
Accounts payable	0		0
Accrued interest	6,079		12,500
Deferred revenue	0		0
Accrued property taxes	0		0
Other current liabilities	226		0
Total current liabilities	6,305		12,500
Long-term debt	1,390,952		1,507,308
Other long-term liabilities	260		286
Deferred revenue	0		0
Class B unit	0		0
Equity - partners	493,404		393,959
Equity - noncontrolling interest	0		0
Total liabilities and equity	1,890,921		1,914,053
Guarantor Subsidiaries [Member]
Current assets:
Cash and cash equivalents	1,485		511	1,278	301
Accounts receivable	51,428		59,448
Prepaid and other current assets	2,427		2,016
Total current assets	55,340		61,975
Properties and equipment, net	1,204,672		1,213,626
Investment in subsidiaries	272,530		273,319
Intangible assets, net	125,427		129,463
Goodwill	268,166		266,716
Equity method investments	84,678		85,279
Other assets	16,630		17,041
Assets	2,027,443		2,047,419
Current liabilities:
Accounts payable	20,691		20,928
Accrued interest	0		756
Deferred revenue	8,497		8,540
Accrued property taxes	4,423		3,431
Other current liabilities	7,376		5,707
Total current liabilities	40,987		39,362
Long-term debt	0		0
Other long-term liabilities	15,249		15,359
Deferred revenue	47,740		47,272
Class B unit	43,870		43,141
Equity - partners	1,879,597		1,902,285
Equity - noncontrolling interest	0		0
Total liabilities and equity	2,027,443		2,047,419
Non-Guarantor Subsidiaries [Member]
Current assets:
Cash and cash equivalents	7,078		7,263	5,727	3,354
Accounts receivable	4,935		5,038
Prepaid and other current assets	355		282
Total current assets	12,368		12,583
Properties and equipment, net	356,382		355,845
Investment in subsidiaries	0		0
Intangible assets, net	0		0
Goodwill	0		0
Equity method investments	0		0
Other assets	0		0
Assets	368,750		368,428
Current liabilities:
Accounts payable	3,461		1,526
Accrued interest	0		0
Deferred revenue	0		1,058
Accrued property taxes	1,713		1,221
Other current liabilities	0		0
Total current liabilities	5,174		3,805
Long-term debt	0		0
Other long-term liabilities	202		198
Deferred revenue	0		0
Class B unit	0		0
Equity - partners	272,530		273,319
Equity - noncontrolling interest	90,844		91,106
Total liabilities and equity	368,750		368,428
Consolidation, Eliminations [Member]
Current assets:
Cash and cash equivalents	0		0	$ 0	$ 0
Accounts receivable	(198)		(182)
Prepaid and other current assets	0		0
Total current assets	(198)		(182)
Properties and equipment, net	0		0
Investment in subsidiaries	(2,152,127)		(2,175,604)
Intangible assets, net	0		0
Goodwill	0		0
Equity method investments	0		0
Other assets	0		0
Assets	(2,152,325)		(2,175,786)
Current liabilities:
Accounts payable	(198)		(182)
Accrued interest	0		0
Deferred revenue	0		0
Accrued property taxes	0		0
Other current liabilities	0		0
Total current liabilities	(198)		(182)
Long-term debt	0		0
Other long-term liabilities	0		0
Deferred revenue	0		0
Class B unit	0		0
Equity - partners	(2,152,127)		(2,175,604)
Equity - noncontrolling interest	0		0
Total liabilities and equity	$ (2,152,325)		$ (2,175,786)

Supplemental Guarantor _ Non-65

Supplemental Guarantor / Non-Guarantor Financial Information Condensed Consolidating Statement of Comprehensive Income (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Revenues [Abstract]
Affiliates	$ 101,428	$ 89,025
Third parties	27,456	16,609
Total revenues	128,884	105,634
Operating costs and expenses [Abstract]
Operations (exclusive of depreciation and amortization)	36,202	32,489
Depreciation and amortization	25,142	18,777
General and administrative	3,122	2,634
Total operating costs and expenses	64,466	53,900
Operating Income (Loss)	64,418	51,734
Equity in earnings of subsidiaries	0	0
Equity in earnings of equity method investments	1,279	1,840
Interest expense	(17,581)	(13,539)
Interest income	515	102
Loss on early extinguishment of debt	0	(12,225)
Gain on sale of assets and other	86	73
Nonoperating Income (Expense)	(15,701)	(23,749)
Income before income taxes	48,717	27,985
State income tax benefit (expense)	(82)	(106)
Net income	48,635	27,879
Allocation of net income attributable to noncontrolling interests	(2,467)	(2,316)
Net income attributable to the partners	46,168	25,563
Other comprehensive income	0	63
Comprehensive income attributable to the partners	46,168	25,626
Parent Company [Member]
Revenues [Abstract]
Affiliates	0	0
Third parties	0	0
Total revenues	0	0
Operating costs and expenses [Abstract]
Operations (exclusive of depreciation and amortization)	0	0
Depreciation and amortization		0
General and administrative	1,280	1,155
Total operating costs and expenses	1,280	1,155
Operating Income (Loss)	(1,280)	(1,155)
Equity in earnings of subsidiaries	65,052	45,283
Equity in earnings of equity method investments	0	0
Interest expense	(17,649)	(6,340)
Interest income	0	0
Loss on early extinguishment of debt		(12,225)
Gain on sale of assets and other	45	0
Nonoperating Income (Expense)	47,448	26,718
Income before income taxes	46,168	25,563
State income tax benefit (expense)	0	0
Net income	46,168	25,563
Allocation of net income attributable to noncontrolling interests	0	0
Net income attributable to the partners	46,168	25,563
Other comprehensive income	0	63
Comprehensive income attributable to the partners	46,168	25,626
Guarantor Subsidiaries [Member]
Revenues [Abstract]
Affiliates	94,291	80,776
Third parties	19,978	11,003
Total revenues	114,269	91,779
Operating costs and expenses [Abstract]
Operations (exclusive of depreciation and amortization)	32,664	29,092
Depreciation and amortization	21,001	14,853
General and administrative	1,842	1,479
Total operating costs and expenses	55,507	45,424
Operating Income (Loss)	58,762	46,355
Equity in earnings of subsidiaries	5,212	4,901
Equity in earnings of equity method investments	1,279	1,840
Interest expense	68	(7,199)
Interest income	515	102
Loss on early extinguishment of debt		0
Gain on sale of assets and other	28	72
Nonoperating Income (Expense)	7,102	(284)
Income before income taxes	65,864	46,071
State income tax benefit (expense)	(82)	(106)
Net income	65,782	45,965
Allocation of net income attributable to noncontrolling interests	(730)	(682)
Net income attributable to the partners	65,052	45,283
Other comprehensive income	0	63
Comprehensive income attributable to the partners	65,052	45,346
Non-Guarantor Subsidiaries [Member]
Revenues [Abstract]
Affiliates	7,137	8,249
Third parties	7,478	5,606
Total revenues	14,615	13,855
Operating costs and expenses [Abstract]
Operations (exclusive of depreciation and amortization)	3,538	3,397
Depreciation and amortization	4,141	3,924
General and administrative	0	0
Total operating costs and expenses	7,679	7,321
Operating Income (Loss)	6,936	6,534
Equity in earnings of subsidiaries	0	0
Equity in earnings of equity method investments	0	0
Interest expense	0	0
Interest income	0	0
Loss on early extinguishment of debt		0
Gain on sale of assets and other	13	1
Nonoperating Income (Expense)	13	1
Income before income taxes	6,949	6,535
State income tax benefit (expense)	0	0
Net income	6,949	6,535
Allocation of net income attributable to noncontrolling interests	(1,737)	(1,634)
Net income attributable to the partners	5,212	4,901
Other comprehensive income	0	0
Comprehensive income attributable to the partners	5,212	4,901
Consolidation, Eliminations [Member]
Revenues [Abstract]
Affiliates	0	0
Third parties	0	0
Total revenues	0	0
Operating costs and expenses [Abstract]
Operations (exclusive of depreciation and amortization)	0	0
Depreciation and amortization	0	0
General and administrative	0	0
Total operating costs and expenses	0	0
Operating Income (Loss)	0	0
Equity in earnings of subsidiaries	(70,264)	(50,184)
Equity in earnings of equity method investments	0	0
Interest expense	0	0
Interest income	0	0
Loss on early extinguishment of debt		0
Gain on sale of assets and other	0	0
Nonoperating Income (Expense)	(70,264)	(50,184)
Income before income taxes	(70,264)	(50,184)
State income tax benefit (expense)	0	0
Net income	(70,264)	(50,184)
Allocation of net income attributable to noncontrolling interests	0	0
Net income attributable to the partners	(70,264)	(50,184)
Other comprehensive income	0	(63)
Comprehensive income attributable to the partners	$ (70,264)	$ (50,247)

Supplemental Guarantor _ Non-66

Supplemental Guarantor / Non-Guarantor Financial Information Condensed Consolidating Statement of Cash Flows (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Condensed Financial Statements, Captions [Line Items]
Net cash provided by operating activities	$ 80,520	$ 43,635
Cash flows from investing activities
Additions to properties and equipment	(12,612)	(8,265)
Distributions from UNEV in excess of earnings	0
Proceeds from sale of assets	22	424
Proceeds from Noncontrolling Interests		0
Distributions in excess of equity in earnings of equity investments	358	3,016
Net cash used for investing activities	(12,232)	(4,825)
Cash flows from financing activities
Net borrowings (repayments) under credit agreement	(116,500)	294,000
Net intercompany financing activities	0	0
Proceeds from Issuance of common units	114,529	37,563
Redemption of 6.5% Senior Notes	0	(309,750)
Distributions to HEP unitholders	(63,496)	(54,805)
Contributions from general partner	297	0
Distribution to HFC for El Dorado tanks		(103)
Distributions to noncontrolling interests	(2,000)	(2,000)
Units withheld for tax withholding obligations	(58)	(35)
Deferred financing costs	(6)	0
Other	(277)	(330)
Net cash used by financing activities	(67,499)	(35,460)
Increase (decrease) for the period	789	3,350
Beginning of period	7,776	3,657
End of period	8,565	7,007
Parent Company [Member]
Condensed Financial Statements, Captions [Line Items]
Net cash provided by operating activities	(23,679)	(20,262)
Cash flows from investing activities
Additions to properties and equipment	0	0
Distributions from UNEV in excess of earnings	0
Proceeds from sale of assets	0	0
Proceeds from Noncontrolling Interests		0
Distributions in excess of equity in earnings of equity investments	0	0
Net cash used for investing activities	0	0
Cash flows from financing activities
Net borrowings (repayments) under credit agreement	(116,500)	0
Net intercompany financing activities	89,060	344,781
Proceeds from Issuance of common units	114,376	39,371
Redemption of 6.5% Senior Notes		(309,750)
Distributions to HEP unitholders	(63,496)	(54,807)
Contributions from general partner	297	805
Distribution to HFC for El Dorado tanks		(103)
Distributions to noncontrolling interests	0	0
Units withheld for tax withholding obligations	(58)	(35)
Deferred financing costs	0
Other	0	0
Net cash used by financing activities	23,679	20,262
Increase (decrease) for the period	0	0
Beginning of period	2	2
End of period	2	2
Guarantor Subsidiaries [Member]
Condensed Financial Statements, Captions [Line Items]
Net cash provided by operating activities	98,013	58,062
Cash flows from investing activities
Additions to properties and equipment	(9,029)	(7,902)
Distributions from UNEV in excess of earnings	788
Proceeds from sale of assets	22	424
Proceeds from Noncontrolling Interests		1,099
Distributions in excess of equity in earnings of equity investments	358	3,016
Net cash used for investing activities	(7,861)	(3,363)
Cash flows from financing activities
Net borrowings (repayments) under credit agreement	0	294,000
Net intercompany financing activities	(89,060)	(344,781)
Proceeds from Issuance of common units	(153)	(1,808)
Redemption of 6.5% Senior Notes		0
Distributions to HEP unitholders	0	(2)
Contributions from general partner	0	(805)
Distribution to HFC for El Dorado tanks		0
Distributions to noncontrolling interests	0	0
Units withheld for tax withholding obligations	0	0
Deferred financing costs	6
Other	277	330
Net cash used by financing activities	(89,178)	(53,722)
Increase (decrease) for the period	974	977
Beginning of period	511	301
End of period	1,485	1,278
Non-Guarantor Subsidiaries [Member]
Condensed Financial Statements, Captions [Line Items]
Net cash provided by operating activities	11,398	10,736
Cash flows from investing activities
Additions to properties and equipment	(3,583)	(363)
Distributions from UNEV in excess of earnings	0
Proceeds from sale of assets	0	0
Proceeds from Noncontrolling Interests		0
Distributions in excess of equity in earnings of equity investments	0	0
Net cash used for investing activities	(3,583)	(363)
Cash flows from financing activities
Net borrowings (repayments) under credit agreement	0	0
Net intercompany financing activities	0	0
Proceeds from Issuance of common units	0	0
Redemption of 6.5% Senior Notes		0
Distributions to HEP unitholders	0	0
Contributions from general partner	0	0
Distribution to HFC for El Dorado tanks		0
Distributions to noncontrolling interests	(8,000)	(8,000)
Units withheld for tax withholding obligations	0	0
Deferred financing costs	0
Other	0	0
Net cash used by financing activities	(8,000)	(8,000)
Increase (decrease) for the period	(185)	2,373
Beginning of period	7,263	3,354
End of period	7,078	5,727
Consolidation, Eliminations [Member]
Condensed Financial Statements, Captions [Line Items]
Net cash provided by operating activities	(5,212)	(4,901)
Cash flows from investing activities
Additions to properties and equipment	0	0
Distributions from UNEV in excess of earnings	(788)
Proceeds from sale of assets	0	0
Proceeds from Noncontrolling Interests		(1,099)
Distributions in excess of equity in earnings of equity investments	0	0
Net cash used for investing activities	(788)	(1,099)
Cash flows from financing activities
Net borrowings (repayments) under credit agreement	0	0
Net intercompany financing activities	0	0
Proceeds from Issuance of common units	0	0
Redemption of 6.5% Senior Notes		0
Distributions to HEP unitholders	0	0
Contributions from general partner	0	0
Distribution to HFC for El Dorado tanks		0
Distributions to noncontrolling interests	6,000	6,000
Units withheld for tax withholding obligations	0	0
Deferred financing costs	0
Other	0	0
Net cash used by financing activities	6,000	6,000
Increase (decrease) for the period	0	0
Beginning of period	0	0
End of period	$ 0	$ 0