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Share-Based Compensation - Schedule of Share-Based Payment Arrangement Activity Expensed (Details) - USD ($)
$ in Millions
3 Months Ended 6 Months Ended
Jun. 30, 2025
Jun. 30, 2024
Jun. 30, 2025
Jun. 30, 2024
Share-based Payment Arrangement, Expensed and Capitalized, Amount [Line Items]        
Share-based compensation expense, before tax $ 7.0 $ 7.0 $ 14.0 $ 21.2
Income tax benefit (1.7) (1.7) (3.4) (5.1)
Share-based compensation expense, after tax 5.3 5.3 10.6 16.1
Restricted stock units        
Share-based Payment Arrangement, Expensed and Capitalized, Amount [Line Items]        
Share-based compensation expense, before tax 3.3 3.4 6.4 8.2
Performance based restricted share unit awards        
Share-based Payment Arrangement, Expensed and Capitalized, Amount [Line Items]        
Share-based compensation expense, before tax 3.7 3.6 7.6 11.9
Cash-settled restricted stock        
Share-based Payment Arrangement, Expensed and Capitalized, Amount [Line Items]        
Share-based compensation expense, before tax $ 0.0 $ 0.0 $ 0.0 $ 1.1