Holly Energy Partners (Details) $ in Millions	3 Months Ended
Mar. 31, 2020 USD ($) Customers shares
Holly Energy Partners Entity [Line Items]
Equity Method Investment, Ownership Percentage	50.00%
Capital Expenditures Incurred but Not yet Paid	$ 65.0
Common Unit Issuance Program	$ 200.0
Common Stock, Shares, Issued \| shares	2,413,153
Proceeds from issuance of common units - HEP	$ 82.3
UNEV Pipeline [Member]
Holly Energy Partners Entity [Line Items]
Equity Method Investment, Ownership Percentage	75.00%
Osage Pipeline [Member] [Member]
Holly Energy Partners Entity [Line Items]
Equity Method Investment, Ownership Percentage	50.00%
HEP
Holly Energy Partners Entity [Line Items]
Percentage of ownership in variable interest entity	57.00%
HEP number of significant customers \| Customers	2
HFC Percentage of HEP Revenues	79.00%
Long-term Purchase Commitment with HEP	$ 348.2

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