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Debt (Carrying Amounts Of Long-Term Debt) (Details) - USD ($)
$ in Thousands
Jun. 30, 2017
Dec. 31, 2016
Debt Instrument [Line Items]    
Unamortized discount $ (2,400)  
Total long-term debt 2,227,951 $ 2,235,137
Long-term debt 2,227,951 2,235,137
Five Point Eight Seven Five Percentage Senior Notes Due Two Thousand Twenty-Six [Member] [Member]    
Debt Instrument [Line Items]    
Principal 1,000,000 1,000,000
Unamortized discount (8,788) (8,775)
Total long-term debt 991,212 991,225
HEP [Member]    
Debt Instrument [Line Items]    
HEP Credit Agreement 843,000 553,000
Total long-term debt 1,236,739 1,243,912
Long-term Debt and Capital Lease Obligations 1,236,739 1,243,912
HEP [Member] | Six Percent Senior Notes Due Two Thousand Twenty Four [Member] [Member]    
Debt Instrument [Line Items]    
Principal 400,000 400,000
Unamortized discount (6,261) (6,607)
Total long-term debt 393,739 393,393
HEP [Member] | 6.5% Senior Notes Due 2020 [Member]    
Debt Instrument [Line Items]    
Principal 0 300,000
Unamortized discount 0 (2,481)
Total long-term debt 0 297,519
Level 2 [Member]    
Debt Instrument [Line Items]    
Financial Liabilities Fair Value Disclosure 21,849 38,921
Level 2 [Member] | Forward Contracts [Member]    
Debt Instrument [Line Items]    
Financial Liabilities Fair Value Disclosure 1,065,000 1,022,500
Level 2 [Member] | Forward Contracts [Member] | HEP [Member]    
Debt Instrument [Line Items]    
Financial Liabilities Fair Value Disclosure $ 418,000 $ 723,750