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

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Gross amount of debt extinguished.

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The maximum amount of borrowing capacity under a line of credit that is available as of the balance sheet date for financing purchases of goods acquired for inventory or imminent delivery to a customer.

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Debt (Narrative) (Details) - USD ($)	3 Months Ended			9 Months Ended
Debt (Narrative) (Details) - USD ($)	Sep. 30, 2020	Sep. 30, 2019	Dec. 31, 2018	Sep. 30, 2020	Sep. 30, 2019	Sep. 28, 2020	Feb. 04, 2020	Dec. 31, 2019
Debt Instrument [Line Items]
Maximum borrowing capacity under revolving credit agreement	$ 1,350,000,000			$ 1,350,000,000
Letters of Credit Outstanding, Amount	5,700,000			5,700,000
Extinguishment of Debt, Amount	522,500,000
Proceeds from Long-term Lines of Credit				219,500,000	$ 269,500,000
Repayments of Long-term Lines of Credit				237,000,000	257,000,000
Loss on early extinguishment of debt	0	$ 0		(25,915,000)	0
Borrowings outstanding under revolving credit agreement	0			0
Sale Leaseback Transaction, Net Proceeds			$ 32,500,000
Senior notes	1,750,000,000			1,750,000,000				$ 1,000,000,000
Debt Redemption Premium	22,500,000
Unamortized Discount (Premium) and Debt Issuance Costs, Net	3,400,000			3,400,000
Capitalized Interest Costs	1,100,000	$ 700,000		2,400,000	$ 1,800,000
Senior notes	500,000,000			500,000,000				500,000,000
2.625% Senior Notes due October 2023	350,000,000			350,000,000		$ 350,000,000.0		0
5.875% Senior Notes due April 2026	1,000,000,000.0			1,000,000,000.0
4.5% Senior Notes due October 2030	400,000,000			400,000,000		$ 400,000,000.0		0
Sale Leaseback Transaction, Net Book Value	37,200,000			37,200,000				40,000,000.0
Five Point Eight Seven Five Percentage Senior Notes Due Two Thousand Twenty-Six [Member] [Member]
Debt Instrument [Line Items]
5.875% Senior Notes due April 2026	1,000,000,000			1,000,000,000				1,000,000,000
Six Percent Senior Notes Due Two Thousand Twenty Four [Member]
Debt Instrument [Line Items]
Senior notes	0			0				$ 500,000,000
Debt Instrument, Interest Rate, Effective Percentage								6.00%
Five Percent Senior Notes Due Two Thousand Twenty Eight [Member]
Debt Instrument [Line Items]
Senior notes	$ 500,000,000			$ 500,000,000			$ 500,000,000.0	$ 0
Debt Instrument, Interest Rate, Effective Percentage							5.00%
Senior Notes due October 2023 [Member]
Debt Instrument [Line Items]
Debt Instrument, Interest Rate, Effective Percentage						2.625%
Senior Notes Due April 2026 [Member]
Debt Instrument [Line Items]
Debt Instrument, Interest Rate, Effective Percentage	5.875%			5.875%
Senior Notes due October 2030 [Member]
Debt Instrument [Line Items]
Debt Instrument, Interest Rate, Effective Percentage						4.50%
HEP
Debt Instrument [Line Items]
Maximum borrowing capacity under revolving credit agreement	$ 1,400,000,000			$ 1,400,000,000
Letters of credit	50,000,000			50,000,000
Line of credit facility, accordion feature	300,000,000			300,000,000
HEP \| Six Percent Senior Notes Due Two Thousand Twenty Four [Member]
Debt Instrument [Line Items]
Senior notes								500,000,000.0
HEP
Debt Instrument [Line Items]
Letters of Credit Outstanding, Amount	0			0
Borrowings outstanding under revolving credit agreement	$ 948,000,000.0			$ 948,000,000.0				$ 965,500,000