Derivative Instruments And Hedging Activities (Narrative) (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended
Mar. 31, 2015
Derivative [Line Items]
Derivative Instruments, Gain (Loss) Reclassified from Accumulated OCI into Income, Period	1 year
Net unrealized gain in accumulated other comprehensive income related to accounting hedges	$ (7.4)
Net unrealized gain to be transferred from accumulated other comprehensive income to statement of income	20.1
HEP [Member] \| Interest Rate Contract [Member]
Derivative [Line Items]
Credit agreement advance	305.0
Credit agreement advance maturing in 2016	155.0
Fixed interest rate	0.74%
Rate added to fixed base rate	2.00%
Effective interest rate on debt	2.74%
Credit agreement advance maturing in 2017	$ 150.0
HEP [Member] \| Current Interest Rate Swap [Member]
Derivative [Line Items]
Fixed interest rate	0.99%
Effective interest rate on debt	2.99%

Credit Agreement Advance

No definition available.

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Balance Type:	credit
Period Type:	instant

- Definition

Credit agreement advance maturing 2016

+ References

No definition available.

+ Details

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- Definition

Credit agreement advance maturing in 2017

+ References

No definition available.

+ Details

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Period Type:	instant

- Definition

Derivative Instruments, Gain (Loss) Reclassified from Accumulated OCI into Income, Period

+ References

No definition available.

+ Details

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- 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

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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

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Namespace Prefix:	us-gaap_
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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 835

-SubTopic 30

-Section 45

-Paragraph 2

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

Reference 2: 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

+ Details

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- 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

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Balance Type:	debit
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- Definition

Fixed interest rate related to the interest rate derivative.

+ References

No definition available.

+ Details

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- Details

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- Details

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