Stock-Based Compensation (Details) (USD $) In Millions, except Share data, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2012	Mar. 31, 2012	Sep. 30, 2012	Sep. 30, 2011
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]
Shares available for issuance under the 2011 Plan (in shares)	3,934,351		3,934,351
Stock options, granted (in shares)	27,500		588,576
Stock options, weighted average exercise price (in dollars per share)			$ 42.94
Stock options, vesting period (in years)	5 years		4 years
Stock options, expiration period (in years)			10 years
Stock options, weighted average grant date fair value (in dollars per share)			$ 8.02
Assumptions used in Black-Scholes model
Risk-free interest rate (in hundredths)			0.90%
Expected life (in years)			6 years
Stock volatility (in hundredths)			23.30%
Dividend yield (in hundredths)			1.70%
Granted, PVS awards (in shares)		101,857
Grant date fair value, PVS awards (in dollars per share)		$ 42.44
Number of shares of common stock per PVS award (in shares)		1
Performance period for the annual growth rate of revenue and return on invested capital targets to be achieved		3 years
PVS payout, Minimum (in hundredths)		0.00%
PVS payout, Maximum (in hundredths)		200.00%
Stock-based compensation expense	$ 4.4		$ 11.8	$ 4.8
Stock Option Expense In Restructuring And Other				$ 1.5