Derivative Instruments And Hedging Activities (Narrative) (Details) $ in Millions	3 Months Ended	9 Months Ended
Sep. 30, 2015 USD ($)	Sep. 30, 2015 USD ($)
Derivative [Line Items]
Accumulated Other Comprehensive Income (Loss), Unrealized Gain (Loss) From Hedging Activites	$ 2.4	$ 2.4
Net unrealized gain in accumulated other comprehensive income related to accounting hedges	22.5	22.5
Net unrealized gain to be transferred from accumulated other comprehensive income to statement of income		0.7
HEP [Member] \| Interest Rate Contract [Member]
Derivative [Line Items]
Credit agreement advance	$ 305.0	$ 305.0
Fixed interest rate	0.74%	0.74%
Rate added to fixed base rate		2.00%
Effective interest rate on debt	2.74%	2.74%
Credit agreement advance maturing in 2017	$ 150.0	$ 150.0
HEP [Member] \| Current Interest Rate Swap [Member]
Derivative [Line Items]
Credit agreement advance maturing in 2016	$ 155.0	$ 155.0
Fixed interest rate	0.99%	0.99%
Rate added to fixed base rate	2.00%
Effective interest rate on debt	2.99%	2.99%

Accumulated Other Comprehensive Income (Loss), Unrealized Gain (Loss) From Hedging Activites

No definition available.

Name:	hfc_AccumulatedOtherComprehensiveIncomeLossUnrealizedGainLossFromHedgingActivites
Namespace Prefix:	hfc_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Credit Agreement Advance

+ References

No definition available.

+ Details

Name:	hfc_CreditAgreementAdvance
Namespace Prefix:	hfc_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Credit agreement advance maturing 2016

+ References

No definition available.

+ Details

Name:	hfc_Creditagreementadvancematuring2016
Namespace Prefix:	hfc_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Credit agreement advance maturing in 2017

+ References

No definition available.

+ Details

Name:	hfc_Creditagreementadvancematuringin2017
Namespace Prefix:	hfc_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

The estimated net amount of existing gains or losses on cash flow hedges at the reporting date expected to be reclassified to earnings within the next 12 months.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 815

-SubTopic 30

-Section 50

-Paragraph 1

-Subparagraph (c)

-URI http://asc.fasb.org/extlink&oid=35736893&loc=d3e80748-113994

+ Details

Name:	us-gaap_CashFlowHedgeGainLossToBeReclassifiedWithinTwelveMonths
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

Percentage points added to the reference rate to compute the variable rate on the debt instrument.

+ References

No definition available.

+ Details

Name:	us-gaap_DebtInstrumentBasisSpreadOnVariableRate1
Namespace Prefix:	us-gaap_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Effective interest rate for the funds borrowed under the debt agreement considering interest compounding and original issue discount or premium.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 210

-SubTopic 10

-Section S99

-Paragraph 1

-Subparagraph (SX 210.5-02.22(a)(1))

-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 835

-SubTopic 30

-Section 45

-Paragraph 2

-URI http://asc.fasb.org/extlink&oid=6451184&loc=d3e28551-108399

+ Details

Name:	us-gaap_DebtInstrumentInterestRateEffectivePercentage
Namespace Prefix:	us-gaap_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

- Definition

Amount as of the balance sheet date of the unamortized adjustment to the carrying value of an interest-bearing hedged item made under an effective fair value hedge that is amortized upon discontinuation of the fair value hedge.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 815

-SubTopic 25

-Section 35

-Paragraph 9

-URI http://asc.fasb.org/extlink&oid=56949341&loc=d3e75592-113984

+ Details

Name:	us-gaap_DeferredGainLossOnDiscontinuationOfFairValueHedge
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Fixed interest rate related to the interest rate derivative.

+ References

No definition available.

+ Details

Name:	us-gaap_DerivativeFixedInterestRate
Namespace Prefix:	us-gaap_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

+ Details

Name:	us-gaap_DerivativeLineItems
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Details

Name:	us-gaap_VariableInterestEntitiesByClassificationOfEntityAxis=us-gaap_VariableInterestEntityPrimaryBeneficiaryMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_DerivativeInstrumentRiskAxis=us-gaap_InterestRateContractMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_DerivativeInstrumentRiskAxis=hfc_CurrentInterestRateSwapMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: