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Stock-Based Compensation (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2025	Mar. 31, 2024
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Total stock-based compensation	$ 8.2	$ 10.0
Tax benefits on stock-based compensation expense	(0.8)	1.2
To be settled with stock
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Total stock-based compensation expense (income)	7.0	8.0
Employee contributions for above stock plans	1.2	2.0
Total stock-based compensation	8.2	10.0
Tax benefits on stock-based compensation expense	1.7	2.0
To be settled with stock | Tax (expense)/benefits on stock-based compensation
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Tax benefits on stock-based compensation expense	(2.5)	(0.8)
To be settled with stock | Restricted Stock Unit awards
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Total stock-based compensation expense (income)	7.0	6.3
To be settled with stock | All other stock plans
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Total stock-based compensation expense (income)	0.0	1.7
To be settled in cash
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Total stock-based compensation expense (income)	0.3	(0.3)
To be settled in cash | Restricted Stock Unit 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 | All other stock plans
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Total stock-based compensation expense (income)	$ 0.3	$ (0.3)

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