Stock-Based Compensation and Equity (Narratives) (Details) (USD $) In Millions, except Share data, unless otherwise specified	1 Months Ended	3 Months Ended		6 Months Ended
	Jul. 31, 2013	Jun. 30, 2013	Jun. 30, 2012	Jun. 30, 2013	Jun. 30, 2012
Stock-Based and Other Compensation Additional Disclosures
Allcoated share-based compensation expense		$ 8.5	$ 4.5	$ 17.7	$ 9.8
Fair value of vested stock				24.1
Excercised - shares				116,887
Options exercised during the period, aggeregate instrinsic value				4.1
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%
Number Of Additional Shares Authorized	2,300,000
Performance Stock Units
Stock-Based and Other Compensation Additional Disclosures
Unrecognized stock based compensation expense		22.8		22.8
Restricted Stock Units
Stock-Based and Other Compensation Additional Disclosures
Unrecognized stock based compensation expense		$ 18.9		$ 18.9