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Share-Based Compensation - Additional Information (Details) - USD ($)
shares in Millions, $ in Millions
12 Months Ended
Dec. 31, 2021
Dec. 31, 2020
Dec. 31, 2019
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Common shares available for issuance under share-based compensation plan (shares) 2.9    
Total share-based compensation expense $ 25.0 $ 19.7 $ 15.2
Recognized tax benefits from share-based compensation expense $ 6.5 5.1 4.0
Restricted Stock      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Vesting period (in years) 3 years    
Total unrecognized compensation cost related to nonvested awards $ 30.8    
Total unrecognized compensation cost related to nonvested awards, period for recognition 2 years    
Value of stock that vested during the period $ 16.8 $ 17.8 $ 13.8
Restricted Stock | Minimum      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Vesting period (in years) 1 year    
Restricted Stock | Maximum      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Vesting period (in years) 5 years    
Performance Shares      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Vesting period (in years) 3 years    
Total unrecognized compensation cost related to nonvested awards $ 14.3