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Debt (Narrative) (Details) (USD $)
1 Months Ended 12 Months Ended 1 Months Ended
Mar. 31, 2014
Jun. 30, 2013
Dec. 31, 2014
Dec. 31, 2013
Dec. 31, 2012
Oct. 31, 2009
Nov. 30, 2009
Mar. 31, 2012
Sep. 30, 2012
Apr. 01, 2012
Debt Instrument [Line Items]                    
Maximum borrowing capacity under revolving credit agreement     $ 1,000,000,000us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity              
Letters of Credit Outstanding, Amount     4,700,000us-gaap_LettersOfCreditOutstandingAmount              
Effective interest rate on debt     2.152%us-gaap_DebtInstrumentInterestRateEffectivePercentage 2.163%us-gaap_DebtInstrumentInterestRateEffectivePercentage            
Long-term debt     1,054,890,000us-gaap_LongTermDebtNoncurrent 997,519,000us-gaap_LongTermDebtNoncurrent            
Principal tender on senior notes     0us-gaap_RepaymentsOfSeniorDebt 300,973,000us-gaap_RepaymentsOfSeniorDebt 205,000,000us-gaap_RepaymentsOfSeniorDebt          
Gains (Losses) on Extinguishment of Debt 7,700,000us-gaap_GainsLossesOnExtinguishmentOfDebt (22,100,000)us-gaap_GainsLossesOnExtinguishmentOfDebt (7,677,000)us-gaap_GainsLossesOnExtinguishmentOfDebt (22,109,000)us-gaap_GainsLossesOnExtinguishmentOfDebt 0us-gaap_GainsLossesOnExtinguishmentOfDebt          
Redemption premium on early extinguishment of debt   14,200,000us-gaap_RedemptionPremium                
Amortization of Debt Discount (Premium)   7,900,000us-gaap_AmortizationOfDebtDiscountPremium                
Plains [Member]                    
Debt Instrument [Line Items]                    
Proceeds from sale of storage assets           40,000,000us-gaap_CapitalLeaseObligationsIncurred
/ us-gaap_LeaseArrangementTypeAxis
= hfc_PlainsMember
       
Plains [Member] | Lease [Member]                    
Debt Instrument [Line Items]                    
Term of lease, years             P15Y      
HEP                    
Debt Instrument [Line Items]                    
Maximum borrowing capacity under revolving credit agreement     650,000,000us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity
/ us-gaap_VariableInterestEntitiesByClassificationOfEntityAxis
= us-gaap_VariableInterestEntityPrimaryBeneficiaryMember
             
Borrowings outstanding under revolving credit agreement     571,000,000us-gaap_LineOfCredit
/ us-gaap_VariableInterestEntitiesByClassificationOfEntityAxis
= us-gaap_VariableInterestEntityPrimaryBeneficiaryMember
363,000,000us-gaap_LineOfCredit
/ us-gaap_VariableInterestEntitiesByClassificationOfEntityAxis
= us-gaap_VariableInterestEntityPrimaryBeneficiaryMember
           
Long-term debt     867,579,000us-gaap_LongTermDebtNoncurrent
/ us-gaap_VariableInterestEntitiesByClassificationOfEntityAxis
= us-gaap_VariableInterestEntityPrimaryBeneficiaryMember
807,630,000us-gaap_LongTermDebtNoncurrent
/ us-gaap_VariableInterestEntitiesByClassificationOfEntityAxis
= us-gaap_VariableInterestEntityPrimaryBeneficiaryMember
           
Principal tender on senior notes               157,800,000us-gaap_RepaymentsOfSeniorDebt
/ us-gaap_VariableInterestEntitiesByClassificationOfEntityAxis
= us-gaap_VariableInterestEntityPrimaryBeneficiaryMember
   
Net proceeds from issuance of senior notes - HEP     0us-gaap_ProceedsFromIssuanceOfSeniorLongTermDebt
/ us-gaap_VariableInterestEntitiesByClassificationOfEntityAxis
= us-gaap_VariableInterestEntityPrimaryBeneficiaryMember
0us-gaap_ProceedsFromIssuanceOfSeniorLongTermDebt
/ us-gaap_VariableInterestEntitiesByClassificationOfEntityAxis
= us-gaap_VariableInterestEntityPrimaryBeneficiaryMember
294,750,000us-gaap_ProceedsFromIssuanceOfSeniorLongTermDebt
/ us-gaap_VariableInterestEntitiesByClassificationOfEntityAxis
= us-gaap_VariableInterestEntityPrimaryBeneficiaryMember
    294,800,000us-gaap_ProceedsFromIssuanceOfSeniorLongTermDebt
/ us-gaap_VariableInterestEntitiesByClassificationOfEntityAxis
= us-gaap_VariableInterestEntityPrimaryBeneficiaryMember
   
Repayments of promissory notes               72,900,000us-gaap_RepaymentsOfNotesPayable
/ us-gaap_VariableInterestEntitiesByClassificationOfEntityAxis
= us-gaap_VariableInterestEntityPrimaryBeneficiaryMember
   
Letter of Credit [Member] | HEP                    
Debt Instrument [Line Items]                    
Maximum borrowing capacity under revolving credit agreement     50,000,000us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity
/ us-gaap_DebtInstrumentAxis
= us-gaap_LetterOfCreditMember
/ us-gaap_VariableInterestEntitiesByClassificationOfEntityAxis
= us-gaap_VariableInterestEntityPrimaryBeneficiaryMember
             
9.875% Senior Notes Due 2017                    
Debt Instrument [Line Items]                    
Stated interest rate, senior notes   9.875%us-gaap_DebtInstrumentInterestRateStatedPercentage
/ us-gaap_DebtInstrumentAxis
= hfc_NinePointEightSevenFivePercentageSeniorNotesDueTwoThousandSeventeenMember
               
Senior notes   286,800,000us-gaap_SeniorLongTermNotes
/ us-gaap_DebtInstrumentAxis
= hfc_NinePointEightSevenFivePercentageSeniorNotesDueTwoThousandSeventeenMember
               
Debt Instrument, Repurchased Face Amount   301,000,000us-gaap_DebtInstrumentRepurchasedFaceAmount
/ us-gaap_DebtInstrumentAxis
= hfc_NinePointEightSevenFivePercentageSeniorNotesDueTwoThousandSeventeenMember
               
6.875% Senior Notes Due 2018                    
Debt Instrument [Line Items]                    
Stated interest rate, senior notes     6.875%us-gaap_DebtInstrumentInterestRateStatedPercentage
/ us-gaap_DebtInstrumentAxis
= hfc_SixPointEightSevenFivePercentageSeniorNotesDueTwoThousandEighteenMember
             
Long-term debt     154,144,000us-gaap_LongTermDebtNoncurrent
/ us-gaap_DebtInstrumentAxis
= hfc_SixPointEightSevenFivePercentageSeniorNotesDueTwoThousandEighteenMember
155,054,000us-gaap_LongTermDebtNoncurrent
/ us-gaap_DebtInstrumentAxis
= hfc_SixPointEightSevenFivePercentageSeniorNotesDueTwoThousandEighteenMember
           
Senior notes     150,000,000us-gaap_SeniorLongTermNotes
/ us-gaap_DebtInstrumentAxis
= hfc_SixPointEightSevenFivePercentageSeniorNotesDueTwoThousandEighteenMember
150,000,000us-gaap_SeniorLongTermNotes
/ us-gaap_DebtInstrumentAxis
= hfc_SixPointEightSevenFivePercentageSeniorNotesDueTwoThousandEighteenMember
           
8.5% Senior Notes Due 2016                    
Debt Instrument [Line Items]                    
Stated interest rate, senior notes     8.50%us-gaap_DebtInstrumentInterestRateStatedPercentage
/ us-gaap_DebtInstrumentAxis
= hfc_EightPointFivePercentageSeniorNotesDueTwoThousandSixteenMember
          8.50%us-gaap_DebtInstrumentInterestRateStatedPercentage
/ us-gaap_DebtInstrumentAxis
= hfc_EightPointFivePercentageSeniorNotesDueTwoThousandSixteenMember
 
Senior notes                 200,000,000us-gaap_SeniorLongTermNotes
/ us-gaap_DebtInstrumentAxis
= hfc_EightPointFivePercentageSeniorNotesDueTwoThousandSixteenMember
 
Principal tender on senior notes                 208,500,000us-gaap_RepaymentsOfSeniorDebt
/ us-gaap_DebtInstrumentAxis
= hfc_EightPointFivePercentageSeniorNotesDueTwoThousandSixteenMember
 
8.25% Senior Notes Due 2018 | HEP                    
Debt Instrument [Line Items]                    
Stated interest rate, senior notes 8.25%us-gaap_DebtInstrumentInterestRateStatedPercentage
/ us-gaap_DebtInstrumentAxis
= hfc_EightPointTwoFivePercentageSeniorNotesDueTwoThousandEighteenMember
/ us-gaap_VariableInterestEntitiesByClassificationOfEntityAxis
= us-gaap_VariableInterestEntityPrimaryBeneficiaryMember
  8.25%us-gaap_DebtInstrumentInterestRateStatedPercentage
/ us-gaap_DebtInstrumentAxis
= hfc_EightPointTwoFivePercentageSeniorNotesDueTwoThousandEighteenMember
/ us-gaap_VariableInterestEntitiesByClassificationOfEntityAxis
= us-gaap_VariableInterestEntityPrimaryBeneficiaryMember
             
Senior notes 150,000,000.0us-gaap_SeniorLongTermNotes
/ us-gaap_DebtInstrumentAxis
= hfc_EightPointTwoFivePercentageSeniorNotesDueTwoThousandEighteenMember
/ us-gaap_VariableInterestEntitiesByClassificationOfEntityAxis
= us-gaap_VariableInterestEntityPrimaryBeneficiaryMember
  0us-gaap_SeniorLongTermNotes
/ us-gaap_DebtInstrumentAxis
= hfc_EightPointTwoFivePercentageSeniorNotesDueTwoThousandEighteenMember
/ us-gaap_VariableInterestEntitiesByClassificationOfEntityAxis
= us-gaap_VariableInterestEntityPrimaryBeneficiaryMember
150,000,000us-gaap_SeniorLongTermNotes
/ us-gaap_DebtInstrumentAxis
= hfc_EightPointTwoFivePercentageSeniorNotesDueTwoThousandEighteenMember
/ us-gaap_VariableInterestEntitiesByClassificationOfEntityAxis
= us-gaap_VariableInterestEntityPrimaryBeneficiaryMember
           
Redemption premium on early extinguishment of debt 6,200,000us-gaap_RedemptionPremium
/ us-gaap_DebtInstrumentAxis
= hfc_EightPointTwoFivePercentageSeniorNotesDueTwoThousandEighteenMember
/ us-gaap_VariableInterestEntitiesByClassificationOfEntityAxis
= us-gaap_VariableInterestEntityPrimaryBeneficiaryMember
                 
Senior Notes Aggregate Redemption Amount 156,200,000hfc_SeniorNotesAggregateRedemptionAmount
/ us-gaap_DebtInstrumentAxis
= hfc_EightPointTwoFivePercentageSeniorNotesDueTwoThousandEighteenMember
/ us-gaap_VariableInterestEntitiesByClassificationOfEntityAxis
= us-gaap_VariableInterestEntityPrimaryBeneficiaryMember
                 
Amortization of Financing Costs and Discounts 1,500,000us-gaap_AmortizationOfFinancingCostsAndDiscounts
/ us-gaap_DebtInstrumentAxis
= hfc_EightPointTwoFivePercentageSeniorNotesDueTwoThousandEighteenMember
/ us-gaap_VariableInterestEntitiesByClassificationOfEntityAxis
= us-gaap_VariableInterestEntityPrimaryBeneficiaryMember
                 
6.5% Senior Notes Due 2020 | HEP                    
Debt Instrument [Line Items]                    
Stated interest rate, senior notes     6.50%us-gaap_DebtInstrumentInterestRateStatedPercentage
/ us-gaap_DebtInstrumentAxis
= hfc_SixPointFivePercentageSeniorNotesDueTwoThousandTwentyMember
/ us-gaap_VariableInterestEntitiesByClassificationOfEntityAxis
= us-gaap_VariableInterestEntityPrimaryBeneficiaryMember
        6.50%us-gaap_DebtInstrumentInterestRateStatedPercentage
/ us-gaap_DebtInstrumentAxis
= hfc_SixPointFivePercentageSeniorNotesDueTwoThousandTwentyMember
/ us-gaap_VariableInterestEntitiesByClassificationOfEntityAxis
= us-gaap_VariableInterestEntityPrimaryBeneficiaryMember
   
Long-term debt     296,579,000us-gaap_LongTermDebtNoncurrent
/ us-gaap_DebtInstrumentAxis
= hfc_SixPointFivePercentageSeniorNotesDueTwoThousandTwentyMember
/ us-gaap_VariableInterestEntitiesByClassificationOfEntityAxis
= us-gaap_VariableInterestEntityPrimaryBeneficiaryMember
295,927,000us-gaap_LongTermDebtNoncurrent
/ us-gaap_DebtInstrumentAxis
= hfc_SixPointFivePercentageSeniorNotesDueTwoThousandTwentyMember
/ us-gaap_VariableInterestEntitiesByClassificationOfEntityAxis
= us-gaap_VariableInterestEntityPrimaryBeneficiaryMember
           
Senior notes     300,000,000us-gaap_SeniorLongTermNotes
/ us-gaap_DebtInstrumentAxis
= hfc_SixPointFivePercentageSeniorNotesDueTwoThousandTwentyMember
/ us-gaap_VariableInterestEntitiesByClassificationOfEntityAxis
= us-gaap_VariableInterestEntityPrimaryBeneficiaryMember
300,000,000us-gaap_SeniorLongTermNotes
/ us-gaap_DebtInstrumentAxis
= hfc_SixPointFivePercentageSeniorNotesDueTwoThousandTwentyMember
/ us-gaap_VariableInterestEntitiesByClassificationOfEntityAxis
= us-gaap_VariableInterestEntityPrimaryBeneficiaryMember
      300,000,000us-gaap_SeniorLongTermNotes
/ us-gaap_DebtInstrumentAxis
= hfc_SixPointFivePercentageSeniorNotesDueTwoThousandTwentyMember
/ us-gaap_VariableInterestEntitiesByClassificationOfEntityAxis
= us-gaap_VariableInterestEntityPrimaryBeneficiaryMember
   
6.25% Senior Notes Due 2015 | HEP                    
Debt Instrument [Line Items]                    
Stated interest rate, senior notes     6.25%us-gaap_DebtInstrumentInterestRateStatedPercentage
/ us-gaap_DebtInstrumentAxis
= hfc_SixPointTwoFivePercentageSeniorNotesDueTwoThousandFifteenMember
/ us-gaap_VariableInterestEntitiesByClassificationOfEntityAxis
= us-gaap_VariableInterestEntityPrimaryBeneficiaryMember
        6.25%us-gaap_DebtInstrumentInterestRateStatedPercentage
/ us-gaap_DebtInstrumentAxis
= hfc_SixPointTwoFivePercentageSeniorNotesDueTwoThousandFifteenMember
/ us-gaap_VariableInterestEntitiesByClassificationOfEntityAxis
= us-gaap_VariableInterestEntityPrimaryBeneficiaryMember
  6.25%us-gaap_DebtInstrumentInterestRateStatedPercentage
/ us-gaap_DebtInstrumentAxis
= hfc_SixPointTwoFivePercentageSeniorNotesDueTwoThousandFifteenMember
/ us-gaap_VariableInterestEntitiesByClassificationOfEntityAxis
= us-gaap_VariableInterestEntityPrimaryBeneficiaryMember
Senior notes, called for redemption                   $ 27,200,000us-gaap_SeniorNotesCurrent
/ us-gaap_DebtInstrumentAxis
= hfc_SixPointTwoFivePercentageSeniorNotesDueTwoThousandFifteenMember
/ us-gaap_VariableInterestEntitiesByClassificationOfEntityAxis
= us-gaap_VariableInterestEntityPrimaryBeneficiaryMember