Employee service share based compensation nonvested awards weighted average remaining requisite service period.

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Maximum age required for retirement.

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- Definition

Period of service under employee service condition before vesting period.

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- Definition

Share based compensation arrangement by share based payment award percentage of shares vest.

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- Definition

Share Based Compensation Arrangement By Share Based Payment Award Shares Expected To Vest

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- Definition

Represents the expense recognized during the period arising from equity-based compensation arrangements (for example, shares of stock, unit, stock options or other equity instruments) with employees, directors and certain consultants qualifying for treatment as employees.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
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-Subparagraph g(1)
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-Publisher SEC
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- Definition

The amount of the cost recognized during the period for defined contribution plans.

+ References

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-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
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-Paragraph 11
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-Name Accounting Standards Codification
-Topic 715
-SubTopic 70
-Section 50
-Paragraph 1
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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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- Definition

The total recognized tax benefit related to compensation cost for equity-based payment arrangements recognized in income during the period.

+ References

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- Definition

Description of the estimated period of time over which an employee is required to provide service in exchange for the equity-based payment award, which often is the vesting period. This period may be explicit or implicit based on the terms of the award, and may be presented in a variety of ways (for example, year, month and year, day, month and year, quarter of a year).

+ 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

+ Details

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- Definition

The number of non-vested equity-based payment instruments, excluding stock (or unit) options, that validly exist and are outstanding as of the balance sheet date.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 123R
-Paragraph A240
-Subparagraph b(2)(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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-Name Accounting Standards Codification
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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 maximum number of shares (or other type of equity) originally approved (usually by shareholders and board of directors), net of any subsequent amendments and adjustments, for awards under the equity-based compensation plan. As stock or unit options and equity instruments other than options are awarded to participants, the shares or units remain authorized and become reserved for issuance under outstanding awards (not necessarily vested).

+ References

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- Definition

The difference between the maximum number of shares (or other type of equity) authorized for issuance under the plan (including the effects of amendments and adjustments), and the sum of: 1) the number of shares (or other type of equity) already issued upon exercise of options or other equity-based awards under the plan; and 2) shares (or other type of equity) reserved for issuance on granting of outstanding awards, net of cancellations and forfeitures, if applicable.

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-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
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- Definition

The number of shares into which fully or partially vested stock options outstanding as of the balance sheet date can be currently converted under the option plan.

+ References

+ Details

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- Definition

The number of shares reserved for issuance under stock option agreements awarded under the plan that validly exist and are outstanding as of the balance sheet date, including vested options.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
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-SubTopic 10
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-Paragraph 2
-Subparagraph (c)(1)(i)-(ii)
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-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
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-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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-Publisher FASB
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- Definition

The weighted average price as of the beginning of the year at which grantees can acquire the shares reserved for issuance under the stock option plan.

+ References

+ Details

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- Definition

The number of shares or units of entity securities issued in the transaction in which equity securities were issued to pay for goods or nonemployee services.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 123R
-Paragraph 65
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-Name Accounting Standards Codification
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Share-Based Compensation (Narrative) (Details) (USD $) In Millions, except Share data, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2011	Jun. 30, 2010	Jun. 30, 2011	Jun. 30, 2010	May 11, 2010
Common stock available for awards, shares					8,000,000
Common stock reserved for future awards, shares	8,031,844		8,031,844
Stock-based employee compensation expense	$ 3.4	$ 3.8	$ 6.4	$ 6.0
Related tax benefits	1.3	1.3	2.3	2.1
Unrecognized compensation cost related to nonvested awards	20.1		20.1
Weighted-average remaining requisite service period, years			2.0
Stock options outstanding, approximately	3,400,000		3,400,000
Stock options exercisable, approximately	3,400,000		3,400,000
Weighted average strike price of stock options	$ 21.95		$ 21.95
401(k) match and profit sharing expense			9.1	9.8
Restricted stock units expected to meet vesting requirements	6,408		6,408
Omnibus Plan [Member] \| Restricted Stock Units [Member]
Units issued			102,752
Director Plan [Member] \| Restricted Stock Units [Member]
Units issued			274,315
Nonvested Contingent Stock Units [Member]
Shares nonvested	2,220,125		2,220,125
Nonvested Restricted Stock Units [Member] \| Restricted Awards [Member]
Shares nonvested	684,486		684,486
Restricted Awards [Member]
Shares granted			119,013
Fair value of shares granted			2.0
Restricted stock units expected to meet vesting requirements	112,605		112,605
Maximum age required for retirement			55
Percentage of shares that vest upon completion of service condition			100.00%
Contingent stock units requisite service period, approximately			3 Years
Period of service under employee service condition before vesting period			10 Years
Contingent Stock Units [Member]
Shares granted			718,231
Fair value of shares granted			$ 11.5
Maximum age required for retirement			55
Percentage of shares that vest upon completion of service condition			100.00%
Contingent stock units requisite service period, approximately			3 years
Period of service under employee service condition before vesting period			10 Years