Debt (Carrying Amounts Of Long-Term Debt) (Details) - USD ($)	Mar. 31, 2020	Feb. 04, 2020	Dec. 31, 2019
Debt Instrument [Line Items]
HEP Credit Agreement			$ 965,500,000
Total long-term debt	$ 2,496,006,000		2,455,640,000
Long-term debt	2,496,006,000		2,455,640,000
Five Point Eight Seven Five Percentage Senior Notes Due Two Thousand Twenty-Six [Member] [Member]
Debt Instrument [Line Items]
Principal	1,000,000,000		1,000,000,000
Unamortized discount	(6,148,000)		(6,391,000)
Total long-term debt	993,852,000		993,609,000
Five Percent Senior Notes Due Two Thousand Twenty Eight [Member]
Debt Instrument [Line Items]
Unamortized discount	(8,346,000)
Debt Instrument, Face Amount		$ 500,000,000
Total long-term debt	491,654,000
Six Percent Senior Notes Due Two Thousand Twenty Four [Member]
Debt Instrument [Line Items]
Principal			500,000,000
Unamortized discount			(3,469,000)
Total long-term debt			496,531,000
HEP
Debt Instrument [Line Items]
HEP Credit Agreement	1,010,500,000
Long-term Debt and Lease Obligation	1,502,154,000		1,462,031,000
Level 2 [Member]
Debt Instrument [Line Items]
Financial Liabilities Fair Value Disclosure	32,932,000		11,637,000
Level 2 [Member] | Senior Notes [Member]
Debt Instrument [Line Items]
Financial Liabilities Fair Value Disclosure	880,540,000		1,127,610,000
Level 2 [Member] | Senior Notes [Member] | HEP
Debt Instrument [Line Items]
Financial Liabilities Fair Value Disclosure	$ 416,795,000		$ 522,045,000