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Stockholders' Equity - Narrative (Details) - USD ($)
$ / shares in Units, $ in Millions
1 Months Ended 12 Months Ended
Dec. 20, 2020
Dec. 19, 2020
Mar. 31, 2020
Dec. 31, 2021
Dec. 31, 2020
Dec. 31, 2019
Dec. 14, 2016
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]              
Preference stock, shares authorized (in shares)       15,000,000 15,000,000.0    
Preference stock, shares issued (in shares)       0 0    
Preferred stock, shares outstanding (in shares)       0 0    
Common stock, share authorized (in shares)       150,000,000.0 150,000,000.0    
Common stock, par value (in USD per share)       $ 0.10 $ 0.10    
Common stock, shares outstanding (in shares)       80,100,000 76,800,000    
Common stock, shares issued (in shares)       80,100,000 76,800,000    
Number of shares reserved for future issuance (in shares)       18,400,000      
Contractual life (years)       7 years      
Treasury stock, shares (in shares)       2,100,000 2,100,000    
Stock repurchased (in shares)       1,300,000      
Stock repurchased, value       $ 51.7 $ 51.7    
Cash dividends per share (in USD per share) $ 5.00 $ 5.00          
Share price (in usd per share)       $ 46.76      
2 1/4% Notes              
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]              
Debt instrument interest rate stated percentage       2.25% 2.25%   2.25%
Convertible senior notes | 2 1/4% Notes              
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]              
Debt instrument interest rate stated percentage       2.25%      
SARs              
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]              
Stock options, outstanding (in shares)       800,000 900,000    
Weighted-average grant date fair value of SARS granted (in USD per share)           $ 37.26  
SARs liabilities paid       $ 0.8 $ 7.6 $ 4.3  
Stock-based compensation related to nonvested SARs       $ 0.1      
Amortization period (months)       2 months      
Expected life (in years)       3 years 2 months 12 days 8 months 12 days 4 years 10 months 24 days  
Volatility (percentage)       38.17% 48.30% 34.79%  
Risk free interest rate (percentage)       0.94% 0.11% 1.69%  
SARs | Employee              
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]              
Contractual life (years)       7 years      
SARs | Employee | Vesting Period One              
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]              
Award vesting percentage (percentage)       33.30%      
SARs | Employee | Vesting Period Two              
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]              
Award vesting percentage (percentage)       33.30%      
SARs | Employee | Vesting Period Three              
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]              
Award vesting percentage (percentage)       33.30%      
SARs | Director              
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]              
Contractual life (years)       7 years      
SARs | Director | Vesting Period One              
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]              
Award vesting percentage (percentage)       50.00%      
SARs | Director | Vesting Period Two              
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]              
Award vesting percentage (percentage)       50.00%      
Service Based Restricted Stock              
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]              
Amortization period (months)       10 months      
Service-based restricted stock outstanding (in shares)       100,000 200,000    
Stock-based compensation related to nonvested service-based restricted stock       $ 1.7      
Service-based restricted stock outstanding and expected to vest       $ 4.8      
Average grant date fair value (in USD per share)           $ 40.70  
Service Based Restricted Stock Units              
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]              
Amortization period (months)       28 months      
Service-based restricted stock outstanding (in shares)       200,000 100,000    
Stock-based compensation related to nonvested service-based restricted stock       $ 6.3      
Service-based restricted stock outstanding and expected to vest       $ 8.3      
Average grant date fair value (in USD per share)       $ 48.61      
Restricted stock, granted (in shares)       100,000      
Performance-based restricted stock              
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]              
Amortization period (months)       12 months      
Service-based restricted stock outstanding (in shares)       300,000 500,000    
Stock-based compensation related to nonvested service-based restricted stock       $ 1.8      
Service-based restricted stock outstanding and expected to vest       15.8      
Average grant date fair value (in USD per share)           $ 37.27  
Equity instruments other than options vested and expected to vest aggregate intrinsic value       $ 12.8      
Restricted stock and restricted stock units, performance based              
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]              
Amortization period (months)       27 months      
Service-based restricted stock outstanding (in shares)       1,000,000.0 400,000    
Stock-based compensation related to nonvested service-based restricted stock       $ 18.0      
Service-based restricted stock outstanding and expected to vest       $ 45.0      
Average grant date fair value (in USD per share)       $ 48.64      
Equity instruments other than options vested and expected to vest aggregate intrinsic value       $ 27.6      
Restricted stock, granted (in shares)       700,000      
Employee stock purchase plan ("ESPP")              
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]              
Employee stock purchase price (percentage)       85.00%      
Shares issued (in shares)       100,000 200,000 100,000  
Weighted average price per share (in usd per share)       $ 48.29 $ 45.65 $ 45.25  
Employee stock purchase plan ("ESPP") | 2013 Employee Stock Purchase Plan              
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]              
Shares authorized for issuance (in shares)       1,500,000      
Stock options              
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]              
Stock options, outstanding (in shares)       0 0    
Exercised in period, intrinsic value         $ 11.0 $ 0.8  
Expected life (in years)           7 years  
Volatility (percentage)           33.48%  
Risk free interest rate (percentage)           2.62%  
Stock, granted (in shares)       0 0    
Performance Stock Units              
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]              
Service-based restricted stock outstanding and expected to vest       $ 3.3      
Expected life (in years)       8 months 1 day      
Volatility (percentage)       35.41%      
Risk free interest rate (percentage)       0.72%      
Performance Stock Units | Executive Officer              
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]              
Average grant date fair value (in USD per share)     $ 37.12        
Restricted stock, granted (in shares)     100,000        
Performance Stock Units | Executive Officer | Minimum              
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]              
Share price (in usd per share)     $ 57.80        
Performance Stock Units | Executive Officer | Maximum              
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]              
Share price (in usd per share)     $ 67.85