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Stock-based Compensation - Summary of Restricted Stock and Performance Share Units Activity (Details) - USD ($)
$ / shares in Units, shares in Thousands, $ in Millions
 12 Months Ended
Dec. 31, 2021
Dec. 31, 2020
Dec. 31, 2019
Restricted Stock      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Total fair value of shares vesting $ 7.8 $ 10.5 $ 14.6
Restricted Stock      
Beginning Balance (In Shares) 460    
Granted (In Shares) 521    
Forfeited/Unearned (in Shares) (86)    
Vested (In Shares) (169)    
Ending Balance (In Shares) 726 460  
Weighted Average Fair Value      
Beginning Balance (in dollars per share) $ 37.49    
Granted (in dollars per share) 44.44    
Forfeited/Unearned (in dollars per share) 49.20    
Vested (in dollars per share) 43.31    
Ending Balance (in dollars per share) $ 43.13 $ 37.49  
Performance Share Units      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Total fair value of shares vesting $ 7.1 $ 18.4 $ 22.1
Restricted Stock      
Beginning Balance (In Shares) 296    
Granted (In Shares) 585    
Forfeited/Unearned (in Shares) (47)    
Vested (In Shares) (154)    
Ending Balance (In Shares) 680 296  
Weighted Average Fair Value      
Beginning Balance (in dollars per share) $ 39.85    
Granted (in dollars per share) 48.58    
Forfeited/Unearned (in dollars per share) 42.21    
Vested (in dollars per share) 43.03    
Ending Balance (in dollars per share) $ 47.27 $ 39.85