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Stock-Based Compensation (Details) (USD $)
In Millions, except Share data, unless otherwise specified
3 Months Ended
Mar. 31, 2014
Mar. 31, 2013
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]    
Shares available for issuance under the 2011 Plan (in shares) 4,004,736  
Stock options, granted (in shares) 588,909  
Stock options, weighted average exercise price (in dollars per share) $ 47.33  
Stock options, weighted average grant date fair value (in dollars per share) $ 10.37  
Assumptions used in Black-Scholes model    
Risk-free interest rate (in hundredths) 1.57%  
Expected life (in years) 6 years  
Stock volatility (in hundredths) 22.10%  
Dividend yield (in hundredths) 0.80%  
Granted, PVS awards (in shares) 128,710  
Grant date fair value, PVS awards (in dollars per share) $ 47.33  
Number of shares of common stock per PVS award (in shares) 1  
Performance period 3 years  
PVS payout, Minimum (in hundredths) 0.00%  
PVS payout, Maximum (in hundredths) 200.00%  
Stock-based compensation expense $ 4.3 $ 5.4