Stock-Based Compensation and Equity (Narratives) (Details) (USD $) In Millions, except Share data, unless otherwise specified	3 Months Ended
Mar. 31, 2013	Mar. 31, 2012
Stock-Based and Other Compensation Additional Disclosures
Allcoated share-based compensation expense	$ 9.1	$ 5.2
Fair value of vested stock	24.1
Excercised - shares	44,897
Options exercised during the period, aggeregate instrinsic value	1.3
Fair Value Assumptions Method Used	The grant date fair value of RSUs are based on our stock price on the date of grant. The grant date fair value of PSUs were determined by utilizing a Monte Carlo simulation model to generate a range of possible future stock prices for both us and the plan defined peer index over the three-year performance period. To estimate the fair value of PSUs granted during the three months ended March 31, 2013, we used a risk-free interest rate of 0.37% and an expected volatility rate of 25.36% (the plan defined peer index assumes 24.83%) and assumed a dividend yield of zero.
Risk Free Interest Rate	0.37%
Fair Value Assumptions Expected Volatility Rate	25.36%
Fair Value Assumptions Expected Volatility Rate Peer Index	24.83%
Fair Value Assumptions Expected Dividend Rate	0.00%
Performance Stock Units
Stock-Based and Other Compensation Additional Disclosures
Unrecognized stock based compensation expense	27.9
Restricted Stock Units
Stock-Based and Other Compensation Additional Disclosures
Unrecognized stock based compensation expense	$ 21.6

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.

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

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-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009.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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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.

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The estimated dividend rate (a percentage of the share price) to be paid (expected dividends) to holders of the underlying shares over the option's term.

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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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For each plan, identification of the award pricing model or other valuation method used in calculating the weighted average fair values disclosed. The model is also used to calculate the compensation expense that is shown within the balance sheet, income statement, and cash flow. Examples of valuation techniques are lattice models (binomial model), closed-form models (Black-Scholes-Merton formula), and a Monte Carlo simulation technique. Fair value is the amount at which an asset or liability could be bought or incurred or sold or settled in a current transaction between willing parties, that is, other than in a forced or liquidation sale. May include disclosures about the assumptions underlying application of the method selected.

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

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The total accumulated difference between fair values of underlying shares on dates of exercise and exercise price on options which were exercised (or share units converted) into shares during the reporting period under the plan.

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Fair value of options vested. Excludes equity instruments other than options, for example, but not limited to, share units, stock appreciation rights, restricted stock.

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Number of share options (or share units) exercised during the current period.

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