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.

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- Definition

Aggregate cash paid by the entity during the period to settle equity instruments granted under equity-based payment arrangements.

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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

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.

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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.

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The weighted-average price as of the balance sheet date at which grantees can acquire the shares reserved for issuance on vested portions of options outstanding and currently exercisable under the stock option plan.

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Stock-Based Compensation Plans (Details Textual) (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]
Unrecognized stock-based compensation cost	$ 7.0
Unrecognized stock-based compensation cost, weighted-average period recognized	1 year 8 months 12 days
Stock options exercisable	190,821,000
Weighted average exercise price to exercise stock options exercisable	$ 33.91
Stock Appreciation Rights (SARs) [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Cash used to settle awards	0	0.4	1.9
Restricted Stock Units (RSUs) [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Cash used to settle awards	0.2	0.9	2.2
Performance Units [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Cash used to settle awards	1.2	2.1	1.4
Stock Options and Stock Appreciation Rights [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Unrecognized stock-based compensation cost	0.9
Unrecognized stock-based compensation cost, weighted-average period recognized	1 year 4 months 24 days
Restricted stock and restricted stock unit [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Unrecognized stock-based compensation cost	3.6
Unrecognized stock-based compensation cost, weighted-average period recognized	1 year 8 months 24 days
Performance Shares and Units [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Unrecognized stock-based compensation cost	2.4
Unrecognized stock-based compensation cost, weighted-average period recognized	1 year 10 months 18 days
Annual Incentive Plan and Long Term Incentive Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Compensation expense for stock based compensation awards	$ 4.8	$ 8.0	$ 8.1