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Stock-Based Compensation - Summary of Components of Stock-Based and Stock-Related Compensation (Details) - USD ($)
$ in Millions
3 Months Ended
Mar. 31, 2024
Mar. 31, 2023
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Total stock-based compensation $ 10.0 $ 9.7
Tax benefits on stock-based compensation expense 1.2 2.3
To be settled with stock    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Total stock-based compensation expense (income) 8.0 8.2
Employee contributions for above stock plans 2.0 1.5
Total stock-based compensation 10.0 9.7
Tax benefits on stock-based compensation expense 2.0 2.0
To be settled with stock | Tax benefits on stock-based compensation payments    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Tax benefits on stock-based compensation expense (0.8) 0.3
To be settled with stock | Executive Stock Unit (ESU) program contributions    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Total stock-based compensation expense (income) 0.6 0.7
To be settled with stock | Deferred Stock Compensation Program    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Total stock-based compensation expense (income) 0.4 0.3
To be settled with stock | ESU program    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Total stock-based compensation expense (income) 0.3 0.2
To be settled with stock | Discount Stock Plan    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Total stock-based compensation expense (income) 0.2 0.2
To be settled with stock | Performance Stock Unit (PSU) awards    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Total stock-based compensation expense (income) (0.2) 1.1
To be settled with stock | Restricted Stock Unit (RSU) awards    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Total stock-based compensation expense (income) 6.3 5.3
To be settled with stock | Other, primarily non-employee directors restricted stock    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Total stock-based compensation expense (income) 0.4 0.4
To be settled in cash    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Total stock-based compensation expense (income) (0.3) 0.8
To be settled in cash | Executive Stock Unit (ESU) program contributions    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Total stock-based compensation expense (income) 0.2 0.1
To be settled in cash | Deferred Stock Compensation Program    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Total stock-based compensation expense (income) 0.0 0.0
To be settled in cash | ESU program    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Total stock-based compensation expense (income) 0.0 0.0
To be settled in cash | Discount Stock Plan    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Total stock-based compensation expense (income) 0.0 0.0
To be settled in cash | Performance Stock Unit (PSU) awards    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Total stock-based compensation expense (income) (0.5) 0.7
To be settled in cash | Restricted Stock Unit (RSU) awards    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Total stock-based compensation expense (income) 0.0 0.0
To be settled in cash | Other, primarily non-employee directors restricted stock    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Total stock-based compensation expense (income) $ 0.0 $ 0.0