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Stock-Based Compensation Narrative (Details) - USD ($)
$ / shares in Units, $ in Millions
1 Months Ended 12 Months Ended
Feb. 29, 2016
Dec. 31, 2015
Feb. 28, 2015
Dec. 31, 2014
Dec. 31, 2015
Dec. 31, 2014
Dec. 31, 2013
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]              
Number of additional shares authorized (shares)         2,800,000.0    
Maximum number of shares authorized (shares)   9,700,000.0     9,700,000.0    
Pre-tax stock-based compensation cost         $ 17.0 $ 16.4 $ 14.3
Income tax benefits         (0.3) 7.8 8.3
Net tax windfall as a result of exercise or vesting of awards         0.9 9.2 8.4
Unrecognized compensation cost related to non-vested awards   $ 29.3     29.3    
Capitalized to inventory         $ 0.2 $ 0.2 $ 0.2
Shares issued to non-employee directors (shares)         8,008 10,329 12,474
Weighted average fair vale (USD per share)       $ 97.48 $ 97.48 $ 106.44  
Restricted Stock Units RSU              
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]              
Award performance period         3 years    
Award vesting percentage         100.00%   33.33%
Shares vested (shares)         77,000    
Vested in period total fair value         $ 7.7 $ 7.0 $ 8.4
Weighted average fair vale (USD per share)         $ 96.26 $ 105.35 $ 105.83
Shares granted (shares)         96,000    
Restricted Stock Units RSU | Subsequent Event              
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]              
Shares vested (shares) 8,451            
Vested in period total fair value $ 0.7            
Stock Appreciation Rights SARS              
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]              
Weighted average fair vale (USD per share)         $ 97.87    
Award vesting period         3 years    
Award, expiration period         10 years    
SARS exercised intrinsic value   $ 4.8   $ 19.4 $ 4.8 $ 19.4 $ 16.4
Shares granted (shares)         364,000    
Performance Shares - Market Condition              
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]              
Award performance period         3 years    
Weighted average fair vale (USD per share)         $ 105.77 $ 117.55 $ 130.33
Shares granted (shares)         32,687 28,871 30,730
Performance Shares - Market Condition | Minimum              
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]              
Performance based criteria plan payout percentage         0.00%    
Performance Shares - Market Condition | Maximum              
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]              
Performance based criteria plan payout percentage         200.00%    
Performance Shares - Market Condition | Dec 2011 Grant              
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]              
Shares vested (shares)     38,589        
Performance based criteria plan payout percentage     128.00%        
Vested in period total fair value     $ 4.4        
Performance Shares - Market Condition | Subsequent Event | December 2012 Grant              
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]              
Shares vested (shares) 18,425            
Vested in period total fair value $ 1.6            
Market based criteria, actual payout percentage 70.00%            
Performance Shares - Performance Condition              
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]              
Award performance period   3 years          
Shares granted (shares)   32,687       27,508  
Performance share payout at target   100.00%     100.00%    
Performance Shares - Performance Condition | Minimum              
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]              
Performance based criteria plan payout percentage   0.00%          
Performance Shares - Performance Condition | Maximum              
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]              
Performance based criteria plan payout percentage   250.00%          
Selling and administrative              
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]              
Pre-tax stock-based compensation cost         $ 16.2 $ 15.7 $ 13.4
Cost of goods sold              
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]              
Pre-tax stock-based compensation cost         $ 0.8 $ 0.7 $ 0.9