Contractual interest rate for funds borrowed, under the debt agreement.

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Amount of unamortized debt discount (premium) and debt issuance costs.

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The carrying value as of the balance sheet date of the current and noncurrent portions of long-term obligations drawn from a line of credit, which is a bank's commitment to make loans up to a specific amount. Examples of items that might be included in the application of this element may consist of letters of credit, standby letters of credit, and revolving credit arrangements, under which borrowings can be made up to a maximum amount as of any point in time conditional on satisfaction of specified terms before, as of and after the date of drawdowns on the line. Includes short-term obligations that would normally be classified as current liabilities but for which (a) postbalance sheet date issuance of a long term obligation to refinance the short term obligation on a long term basis, or (b) the enterprise has entered into a financing agreement that clearly permits the enterprise to refinance the short-term obligation on a long term basis and the following conditions are met (1) the agreement does not expire within 1 year and is not cancelable by the lender except for violation of an objectively determinable provision, (2) no violation exists at the BS date, and (3) the lender has entered into the financing agreement is expected to be financially capable of honoring the agreement.

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Debt - Carrying Amounts Of Long-Term Debt (Details) - USD ($)	Dec. 31, 2021	Dec. 31, 2020	Sep. 30, 2020	Sep. 28, 2020	Feb. 29, 2020
Debt Instrument [Line Items]
Principal	$ 1,750,000,000	$ 1,750,000,000
Unamortized discount and debt issuance costs	(10,312,000)	(12,885,000)
Total HollyFrontier long-term debt	1,739,688,000	1,737,115,000
HEP Credit Agreement	0
Total long-term debt	3,072,737,000	3,142,718,000
Level 2
Debt Instrument [Line Items]
Senior notes	1,912,753,000	1,903,867,000
HEP
Debt Instrument [Line Items]
HEP Credit Agreement	840,000,000	913,500,000
Total long-term debt	1,333,049,000	1,405,603,000
HEP \| Level 2
Debt Instrument [Line Items]
Senior notes	$ 502,705,000	506,540,000
2.625% Senior Notes
Debt Instrument [Line Items]
Stated interest rate	0.02625%		2.625%	2.625%
Principal	$ 350,000,000	350,000,000	$ 350,000,000
5.875% Senior Notes
Debt Instrument [Line Items]
Stated interest rate	5.875%
Principal	$ 1,000,000,000	1,000,000,000
4.500% Senior Notes
Debt Instrument [Line Items]
Stated interest rate	4.50%		4.50%	4.50%
Principal	$ 400,000,000	400,000,000	$ 400,000,000
HEP 5.000% Senior Notes
Debt Instrument [Line Items]
Stated interest rate					5.00%
HEP 5.000% Senior Notes \| HEP
Debt Instrument [Line Items]
Stated interest rate	5.00%
Principal	$ 500,000,000	500,000,000
Unamortized discount and debt issuance costs	$ (6,951,000)	$ (7,897,000)