Employee Service Share Based Compensation Tax Benefit Realized From Share Based Compensation Plans

No definition available.

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- Definition

Maximum Number Of Shares Other Than Options Or Stock Appreciation Rights Granted For Awards

+ References

No definition available.

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- Definition

Share based compensation arrangement by share based payment award award performance period.

+ References

No definition available.

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- Definition

Share based compensation arrangement by share based payment award award vesting periods.

+ References

No definition available.

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- Definition

Stock Based Compensation Costs Reversed

+ References

No definition available.

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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

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-Publisher FASB

-Name Accounting Standards Codification

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-Publisher SEC

-Name Staff Accounting Bulletin (SAB)

-Number Topic 14

-Section F

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- Definition

Unrecognized cost of unvested share-based compensation awards.

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- Definition

Weighted average period over which unrecognized compensation is expected to be recognized for equity-based compensation plans, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

+ 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.

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- Definition

The cash inflow associated with the amount received from holders exercising their stock options. This item inherently excludes any excess tax benefit, which the entity may have realized and reported separately.

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-Publisher FASB

-Name Accounting Standards Codification

-Glossary Financing Activities

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- Definition

Period 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, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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- Definition

The number of equity-based payment instruments, excluding stock (or unit) options, that were forfeited during the reporting period.

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- Definition

Weighted average fair value as of the grant date of equity-based award plans other than stock (unit) option plans that were not exercised or put into effect as a result of the occurrence of a terminating event.

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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).

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- Definition

The weighted average fair value at grant date for nonvested equity-based awards issued 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).

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- Definition

Fair value of share-based awards for which the grantee gained the right by satisfying service and performance requirements, to receive or retain shares or units, other instruments, or cash.

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- Definition

Period from grant date that an equity-based award expires, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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- Definition

Expected term of share-based compensation awards, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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-Name Staff Accounting Bulletin (SAB)

-Number Topic 14

-Section D

-Subsection 2

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- Definition

The estimated measure of the percentage by which a share price is expected to fluctuate during a period. Volatility also may be defined as a probability-weighted measure of the dispersion of returns about the mean. The volatility of a share price is the standard deviation of the continuously compounded rates of return on the share over a specified period. That is the same as the standard deviation of the differences in the natural logarithms of the stock prices plus dividends, if any, over the period.

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- Definition

The risk-free interest rate assumption that is used in valuing an option on its own shares.

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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).

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- Definition

Amount of difference between fair value of the underlying shares reserved for issuance and exercise price of vested portions of options outstanding and currently exercisable.

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- Definition

Weighted average remaining contractual term for vested portions of options outstanding and currently exercisable or convertible, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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- Definition

Amount of accumulated difference between fair value of underlying shares on dates of exercise and exercise price on options exercised (or share units converted) into shares.

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-Publisher FASB

-Name Accounting Standards Codification

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- Definition

The number of shares under options that were cancelled during the reporting period as a result of occurrence of a terminating event specified in contractual agreements pertaining to the stock option plan.

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-Publisher FASB

-Name Accounting Standards Codification

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- Definition

The weighted average grant-date fair value of options granted during the reporting period as calculated by applying the disclosed option pricing methodology.

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-Publisher FASB

-Name Accounting Standards Codification

-Topic 718

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- Definition

Amount by which the current fair value of the underlying stock exceeds the exercise price of options outstanding.

+ References

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- Definition

Weighted average remaining contractual term for option awards outstanding, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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- Definition

Weighted average price at which grantees could have acquired the underlying shares with respect to stock options that were terminated.

+ References

No definition available.

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Stock Plans - Additional Information (Detail) (USD $) In Millions, except Share data, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Risk-free rate of weighted-average grant date fair value		0.90%	2.10%
Expected life assumption for weighted average grant date fair value		5 years 2 months 12 days	5 years 1 month 6 days
Volatility rate of weighted-average grant date fair value		70.60%	68.20%
Unrecognized compensation cost	$ 8.2
Weighted average period to recognize compensation cost	2 years
Compensation costs		2.1
Compensation cost on stock-based compensation plans	11.6	9.0	10.2
Tax benefit recognized from all stock-based employee compensation plans	3.0	3.2	3.7
Cash received from stock option exercises	5.2	25.1	4.5
Employee service share based compensation tax benefit realized from share based compensation plans	1.0	5.2	0.7
REIT Conversion [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock option canceled		167,500
Weighted average exercise price		$ 22.02
Omnibus Incentive 2006 Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Maximum grant of stock options, restricted stock, and restricted stock units to directors and employees	4,600,000
Maximum number of shares other than options or stock appreciation rights granted for awards	1,000,000
Equity Incentive Plan Employee Stock Option [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Weighted average remaining contractual term of options outstanding	3 years 10 months 24 days
Weighted average remaining contractual term of options exercisable	2 years 10 months 24 days
Aggregate intrinsic value of options outstanding	13.8
Aggregate intrinsic value of options exercisable	10.3
Weighted average grant date fair value		$ 14.34	$ 15.96
Total intrinsic value of options exercised	4.3	21.5	2.4
Equity Incentive Plan Restricted Stock [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Granted, Weighted Average Grant-Date Fair-Value	$ 43.56	$ 33.57	$ 33.26
Restricted stock award granted by Company	202,528
Fair value of restricted stock awards vested	$ 3.2	$ 15.6	$ 3.3
Restricted stock units	95,068
Weighted average grant date fair value	$ 27.72
Equity Incentive Plan Restricted Stock [Member] \| Non Employee Director [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Exercisable period from the date of grant for stock option granted	1 year
Equity Incentive Plan Restricted Stock [Member] \| Employee [Member] \| Minimum [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Exercisable period from the date of grant for stock option granted	1 year
Equity Incentive Plan Restricted Stock [Member] \| Employee [Member] \| Maximum [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Exercisable period from the date of grant for stock option granted	4 years
Restricted Stock Awards for Certain Management [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Granted, Weighted Average Grant-Date Fair-Value	$ 45.01	$ 39.88	$ 44.39
Restricted stock award granted by Company	37,000	104,500	67,400
Vesting period from the date of grant	May vest in 2016	May vest in 2015	May vest in 2014
Risk-free rate of weighted-average grant date fair value	0.40%	0.54%
Expected life assumption for weighted average grant date fair value	3 years	3 years
Performance period	3 years	3 years
Restricted Stock Awards for Certain Management [Member] \| Minimum [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Volatility rate of weighted-average grant date fair value	23.00%	15.00%
Restricted Stock Awards for Certain Management [Member] \| Maximum [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Volatility rate of weighted-average grant date fair value	64.00%	238.00%
Stock Options [Member] \| Omnibus Incentive 2006 Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Expiration period for stock option awards	10 years
Stock Options [Member] \| Omnibus Incentive 2006 Plan [Member] \| Non Employee Director [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Exercisable period from the date of grant for stock option granted	1 year
Stock Options [Member] \| Omnibus Incentive 2006 Plan [Member] \| Employee [Member] \| Minimum [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Exercisable period from the date of grant for stock option granted	1 year
Stock Options [Member] \| Omnibus Incentive 2006 Plan [Member] \| Employee [Member] \| Maximum [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Exercisable period from the date of grant for stock option granted	4 years
Restricted Stock Units (RSUs) [Member] \| REIT Conversion [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Restricted stock units		401,000
Weighted average grant date fair value		$ 29.76