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Stock-Based Compensation - Narrative (Details) - USD ($)
$ / shares in Units, $ in Millions
1 Months Ended 12 Months Ended
Feb. 29, 2020
May 31, 2019
Dec. 31, 2017
Dec. 31, 2019
Dec. 31, 2018
Dec. 31, 2017
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
Maximum number of shares authorized (shares)       9,700,000    
Pre-tax stock-based compensation cost       $ 16.4 $ 24.2 $ 22.3
Income tax benefits       2.2 5.3 5.4
Net tax windfall as a result of exercise or vesting of awards       3.3 2.4 2.5
Unrecognized compensation cost related to non-vested awards       14.2    
Capitalized to inventory       $ 0.2 $ 0.2 $ 0.3
Shares issued to non-employee directors (shares)       8,216 9,376 8,480
Restricted Stock Units RSU            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
Shares vested (shares)       84,000    
Vested in period total fair value       $ 8.9 $ 8.6 $ 6.6
Shares granted (USD per share)       $ 127.89 $ 108.74 $ 123.39
Shares granted (shares)       18,000    
Restricted Stock Awards, Market Conditions            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
Award vesting percentage       100.00%    
Shares vested (shares)       19,500    
Vested in period total fair value       $ 2.9    
Award performance period       3 years    
Stock Appreciation Rights SARS            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
Shares granted (USD per share)       $ 129.28    
Award vesting period       3 years    
Award, expiration period       10 years    
SARS exercised intrinsic value     $ 10.1 $ 17.8 $ 14.1 $ 10.1
Shares granted (shares)       40,000    
Performance Shares            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
Shares granted (USD per share)         $ 98.80  
Shares outstanding (shares)         60,008  
Performance Shares - Market Condition            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
Shares granted (USD per share)           $ 142.89
Shares granted (shares)         24,675  
Award performance period       3 years    
Performance Shares - Market Condition | Minimum            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
Performance based criteria plan payout percentage, market condition       0.00%    
Performance Shares - Market Condition | Maximum            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
Performance based criteria plan payout percentage, market condition       200.00%    
Performance Shares - Performance Condition            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
Shares granted (shares)     24,675      
Award performance period       3 years    
Performance share payout at target       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%    
Performance Shares - Performance Condition | December 2015 Grant            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
Shares vested (shares)   47,693        
Vested in period total fair value   $ 6.2        
Market based criteria, actual payout percentage   160.00%        
Selling and administrative            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
Pre-tax stock-based compensation cost       $ 15.4 $ 23.4 $ 21.1
Cost of goods sold            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
Pre-tax stock-based compensation cost       $ 1.0 $ 0.8 $ 1.2
Subsequent Event | Performance Shares - Market Condition            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
Vested in period total fair value $ 2.5          
Subsequent Event | Performance Shares - Market Condition | December 2016 Grant            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
Shares vested (shares) 17,000          
Market based criteria, actual payout percentage 72.00%