Average Shareholder Return Achieved By Equally-Weighted Independent Refining Companies, Period

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- Definition

Current Estimated Percentage Of Share Units Awarded Ultimately Issued

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- Definition

Percentage of share units awarded ,payable

+ References

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- Definition

Percentage Of Share Units Awarded Ultimately Issued

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- Definition

As of the balance sheet date, the aggregate unrecognized cost of equity-based awards made to employees under equity-based compensation awards that have yet to vest.

+ References

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-Publisher FASB

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-Paragraph A240

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- Definition

The weighted average period over which unrecognized compensation is expected to be recognized for equity-based compensation plans, using a decimal to express in number of years.

+ References

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- Definition

Description of the period of time over which an employee's right to exercise an award is no longer contingent on satisfaction of either a service condition, market condition or a performance condition, which may be expressed in a variety of ways (for example, in years, month and year).

+ References

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-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

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-Paragraph A240

-Subparagraph a

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

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- Definition

Equity-based compensation cost during the period with respect to the award, which will be recognized in income (as well as the total recognized tax benefit) or capitalized as part of the cost of an asset.

+ References

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- Definition

The number of grants made during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan).

+ References

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-Paragraph A240

-Subparagraph b(2)(c)

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- Definition

The total fair value of equity-based awards for which the grantee gained the right during the reporting period, by satisfying service and performance requirements, to receive or retain shares or units, other instruments, or cash in accordance with the terms of the arrangement.

+ References

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- Definition

The weighted average fair value as of grant date pertaining to an equity-based award plan other than a stock (or unit) option plan for which the grantee gained the right during the reporting period, by satisfying service and performance requirements, to receive or retain shares or units, other instruments, or cash in accordance with the terms of the arrangement.

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- Definition

Number of shares (or other type of equity) issued during the period as a result of any equity-based compensation plan other than an employee stock ownership plan (ESOP), net of any shares forfeited. Shares issued could result from the issuance of restricted stock, the exercise of stock options, stock issued under employee stock purchase plans, and/or other employee benefit plans.

+ References

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- Definition

Value of stock (or other type of equity) issued during the period as a result of any equity-based compensation plan other than an employee stock ownership plan (ESOP), net of stock value of such awards forfeited. Stock issued could result from the issuance of restricted stock, the exercise of stock options, stock issued under employee stock purchase plans, and/or other employee benefit plans.

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Stock-Based Compensation (Narrative) (Details) (USD $) In Millions, except Share data, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2012	Sep. 30, 2011	Sep. 30, 2012	Sep. 30, 2011
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Compensation cost attributable to share-based compensation plans	$ 7.3	$ 9.4	$ 23.2	$ 13.9
Restricted Stock [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Non-vested performance share grants in period			420,922
Fair value of restricted stock vested			13.5
Total unrecognized compensation cost related to non-vested grants	12.3		12.3
Total unrecognized compensation cost, weighted-average period of recognition, years			1.1
Weighted average grant date fair value			$ 23.48
Performance Share Units [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Non-vested performance share grants in period			298,559
Total unrecognized compensation cost related to non-vested grants	15.1		15.1
Total unrecognized compensation cost, weighted-average period of recognition, years			1.4
Common stock issued, shares			459,426
Common stock issued, fair value			2.8
Weighted average grant date fair value			$ 28.20
Average shareholder return achieved by equally-weighted independent refining companies, period	3 years
Minimum [Member] \| Restricted Stock [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock vesting period, years	1
Minimum [Member] \| Performance Share Units [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Percentage of share units awarded that will ultimately be issued, possible range	0.00%
Percentage of share units awarded that will ultimately be issued, current estimate	107.00%
Percentage of share units awarded, payable	0.00%
Maximum [Member] \| Restricted Stock [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock vesting period, years	3
Maximum [Member] \| Performance Share Units [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock vesting period, years	3
Percentage of share units awarded that will ultimately be issued, possible range	200.00%
Percentage of share units awarded that will ultimately be issued, current estimate	175.00%
Percentage of share units awarded, payable	200.00%
HEP [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Compensation cost attributable to share-based compensation plans	$ 0.5	$ 0.6	$ 2.1	$ 1.6