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Distributions to limited partner, distributions waived

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Number of Renewal Option Periods

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Ownership Percentage by Parent, Controlling Interest

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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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Amount after accumulated impairment loss of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

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Amount before accumulated impairment loss of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

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Amount of accumulated impairment loss for an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

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The aggregate amount of write-downs for impairments recognized during the period for long lived assets held for use (including those held for disposal by means other than sale).

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Term of lessee's finance lease, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days.

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Long-lived assets other than financial instruments, long-term customer relationships of a financial institution, mortgage and other servicing rights, deferred policy acquisition costs, and deferred tax assets.

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Receivables to be collected from (obligations owed to) related parties, net as of the balance sheet date where one party can exercise control or significant influence over another party; including affiliates, owners or officers and their immediate families, pension trusts, and so forth.

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Description of Business and Presentation of Financial Statements - Narrative (Details)		3 Months Ended	6 Months Ended	9 Months Ended
	Jan. 01, 2021 renewalOption	Sep. 30, 2020 USD ($) renewalOption shares	Jun. 30, 2020 USD ($)	Sep. 30, 2020 USD ($) renewalOption shares	Sep. 30, 2020 USD ($) renewalOption shares	Sep. 30, 2020 USD ($) Components renewalOption shares	Sep. 30, 2020 USD ($) segment renewalOption shares	Dec. 31, 2020 USD ($)	Dec. 31, 2019 USD ($)	Jan. 01, 2019 USD ($)
Other Ownership Interests [Line Items]
Ownership percentage, controlling interest		57.00%		57.00%	57.00%	57.00%	57.00%
Shares, Issued \| shares		37,250,000		37,250,000	37,250,000	37,250,000	37,250,000
Limited partner distribution					$ 2,500,000
Revenue, Remaining Performance Obligation, Amount		$ 17,600,000
Property, Plant, and Equipment, Salvage Value			$ 88,500,000
Goodwill, Impaired, Accumulated Impairment Loss		35,700,000		$ 35,700,000	35,700,000	$ 35,700,000	$ 35,700,000
Long-Lived Assets			28,100,000
Goodwill		$ 234,684,000		$ 234,684,000	234,684,000	$ 234,684,000	$ 234,684,000		$ 270,336,000
General Partners' Capital Account, Period Distribution Amount					$ 0
Goodwill, Gross			68,700,000
Impairment of Long-Lived Assets Held-for-use			$ 0
Finance lease term		10 years		10 years	10 years	10 years	10 years
Number of Renewal Option Periods \| renewalOption		(1)		(1)	(1)	(1)	(1)
Number of Reportable Segments						2	2
Operating Lease, Liability		$ 3,532,000		$ 3,532,000	$ 3,532,000	$ 3,532,000	$ 3,532,000		$ 3,608,000	$ 78,400,000
HEP [Member]
Other Ownership Interests [Line Items]
Limited Liability Company (LLC) or Limited Partnership (LP), Managing Member or General Partner, Ownership Interest				2.00%
Subsequent Event
Other Ownership Interests [Line Items]
Related Party Transaction, Due from (to) Related Party								$ 5,000,000
Due from Related Parties								$ 10,000,000
Lessor, Operating Lease, Renewal Term	5 years
Lessor, Operating Lease, Term of Contract	10 years
Number of Renewal Option Periods \| renewalOption	(2)
Subsequent Event \| Forecast [Member]
Other Ownership Interests [Line Items]
Lessor, Operating Lease, Service Fee Arrangement, Period	5 years
UNEV Pipeline
Other Ownership Interests [Line Items]
Equity Method Investment, Ownership Percentage		75.00%		75.00%	75.00%	75.00%	75.00%
Osage Pipeline [Member]
Other Ownership Interests [Line Items]
Equity Method Investment, Ownership Percentage		50.00%		50.00%	50.00%	50.00%	50.00%
Cushing Connect Pipeline & Terminal [Member]
Other Ownership Interests [Line Items]
Equity Method Investment, Ownership Percentage		50.00%		50.00%	50.00%	50.00%	50.00%