Common Unit Issuance Program

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- Definition

Concentration risk, number of significant customers

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- Definition

Deferred Credit Service Period

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No definition available.

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- Definition

Length of pipeline

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No definition available.

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- Definition

Proceeds from sale of HEP common units

+ References

No definition available.

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- Definition

Production barrel capacity per day

+ References

No definition available.

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- Definition

Purchase Commitments Expiration Dates

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No definition available.

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- Definition

Amount of common stock allocated to investors to buy shares of a new issue of common stock before they are offered to the public. When stock is sold on a subscription basis, the issuer does not initially receive the total proceeds. In general, the issuer does not issue the shares to the investor until it receives the entire proceeds.

+ References

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02(29))
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- Definition

For an entity that discloses a concentration risk in relation to quantitative amount, which serves as the "benchmark" (or denominator) in the equation, this concept represents the concentration percentage derived from the division.

+ References

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- Definition

Carrying amount as of the balance sheet date of unearned revenue or income, not otherwise specified in the taxonomy, which is expected to be taken into income after one year or beyond the normal operating cycle, if longer and noncurrent obligations not separately disclosed in the balance sheet (other liabilities, noncurrent).

+ References

No definition available.

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- Definition

The percentage of ownership of common stock or equity participation in the investee accounted for under the equity method of accounting.

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- Definition

This item represents the carrying amount on the entity's balance sheet of its investment in common stock of an equity method investee. This is not an indicator of the fair value of the investment, rather it is the initial cost adjusted for the entity's share of earnings and losses of the investee, adjusted for any distributions (dividends) and other than temporary impairment (OTTI) losses recognized.

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- Definition

Gross amount of debt extinguished.

+ References

No definition available.

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- Definition

Difference between the fair value of payments made and the carrying amount of debt which is extinguished prior to maturity.

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- Definition

The amount of capital contributed by the general partner.

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- Definition

Percentage investment held by the managing member or general partner of the limited liability company (LLC) or limited partnership (LP).

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- Definition

Percentage investment held by members or limited partners of limited liability company (LLC) or limited partnership (LP).

+ References

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- Definition

The minimum amount the entity agreed to spend under the long-term purchase commitment.

+ References

No definition available.

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- Definition

The cash outflow associated with the purchase of or advances to an equity method investments, which are investments in joint ventures and entities in which the entity has an equity ownership interest normally of 20 to 50 percent and exercises significant influence.

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- Definition

The cash inflow from the issuance of common limited partners units during the period.

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- Definition

Amount of cash outflow for the payment of debt classified as other, maturing after one year or the operating cycle, if longer.

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- Definition

The increase (decrease) during the period in the number of shares issued.

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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

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- Definition

Percentage of the Variable Interest Entity's (VIE) voting interest owned by (or beneficial interest in) the reporting entity (directly or indirectly).

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Holly Energy Partners (Details) $ in Thousands			1 Months Ended		3 Months Ended			9 Months Ended		17 Months Ended
Holly Energy Partners (Details) $ in Thousands	Mar. 31, 2016 USD ($)	Feb. 22, 2016 USD ($) mi	Oct. 31, 2017	Mar. 31, 2016 USD ($)	Dec. 31, 2017	Sep. 30, 2017 USD ($) yr	Sep. 30, 2016 USD ($)	Sep. 30, 2017 USD ($) yr Customers mi shares	Sep. 30, 2016 USD ($) bbl	Sep. 30, 2017 USD ($) yr shares	Oct. 19, 2017 shares	Dec. 31, 2016 USD ($)
Holly Energy Partners Entity [Line Items]
Equity Method Investment, Ownership Percentage						50.00%		50.00%		50.00%
Equity Method Investments						$ 0		$ 0		$ 0		$ 0
Repayment of financing obligation				$ (39,500)					$ (39,500)
Extinguishment of Debt, Amount	$ 30,800
Loss on early extinguishment of debt	(8,700)			$ (8,700)		0	$ 0	$ (12,225)	$ (8,718)
Length of Pipeline \| mi								87
Production barrel capacity per day \| bbl									80,000
Deferred Credit Service Period								20 years
Common Unit Issuance Program								$ 200,000
General Partners' Contributed Capital						1,100		$ 1,100		$ 1,100
Common Stock, Shares, Issued \| shares								1,538,452		2,241,907
Proceeds from Issuance of Common Stock						$ 52,300
Proceeds from issuance of common units - HEP								$ 52,285	$ 22,791	$ 77,100
HEP [Member]
Holly Energy Partners Entity [Line Items]
Percentage of ownership in variable interest entity								36.00%
Percentage of general partner interest						2.00%		2.00%
HEP number of significant customers \| Customers								2
HFC Percentage of HEP Revenues								85.00%
Purchase of equity method investment - HEP								$ 0	42,550
Repayment of financing obligation	$ (39,500)							0	(39,500)
Long-term Purchase Commitment with HEP, Amount								$ 321,300
UNEV Pipeline [Member]
Holly Energy Partners Entity [Line Items]
Equity Method Investment, Ownership Percentage						75.00%		75.00%		75.00%
Cheyenne [Member]
Holly Energy Partners Entity [Line Items]
Equity Method Investment, Ownership Percentage						50.00%		50.00%		50.00%
SLC Pipeline [Member]
Holly Energy Partners Entity [Line Items]
Equity Method Investment, Ownership Percentage						25.00%		25.00%		25.00%
Osage Pipeline [Member] [Member]
Holly Energy Partners Entity [Line Items]
Equity Method Investment, Ownership Percentage		50.00%				50.00%		50.00%		50.00%
Ownership Interest in Equity Method Investment		50.00%
Length of Pipeline \| mi		135
Deferred Credits and Other Liabilities, Noncurrent		$ 38,900
Frontier Pipeline [Member]
Holly Energy Partners Entity [Line Items]
Equity Method Investment, Ownership Percentage						50.00%		50.00%		50.00%
Subsequent Event [Member] \| HEP [Member]
Holly Energy Partners Entity [Line Items]
Percentage of general partner interest			59.00%
Common Stock, Shares Subscribed but Unissued \| shares											37,250,000
Subsequent Event [Member] \| SLC Pipeline [Member]
Holly Energy Partners Entity [Line Items]
Ownership Interest in Equity Method Investment					75.00%
Minimum [Member]
Holly Energy Partners Entity [Line Items]
Purchase Commitments Expiration Dates \| yr						2,017		2,017		2,017
Maximum [Member]
Holly Energy Partners Entity [Line Items]
Purchase Commitments Expiration Dates \| yr						2,036		2,036		2,036
Series of Individually Immaterial Business Acquisitions [Member] \| HEP [Member]
Holly Energy Partners Entity [Line Items]
Purchase of equity method investment - HEP									$ 42,600