Stock-Based Compensation (Details) - USD ($) $ in Millions	3 Months Ended	6 Months Ended
Jun. 30, 2025	Jun. 30, 2024	Jun. 30, 2025	Jun. 30, 2024
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Total stock-based compensation			$ 12.5	$ 17.8
Tax benefits on stock-based compensation expense	$ 0.6	$ 1.0	(0.2)	2.2
To be settled with stock
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Total stock-based compensation expense (income)	3.1	5.9	10.1	13.9
Employee contributions for above stock plans	1.2	1.9	2.4	3.9
Total stock-based compensation	4.3	7.8	12.5	17.8
Tax benefits on stock-based compensation expense	0.8	1.4	2.5	3.4
To be settled with stock \| Tax (expense)/benefits on stock-based compensation payments
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Tax benefits on stock-based compensation expense	(0.2)	(0.4)	(2.7)	(1.2)
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)	0.4	2.9	7.4	9.2
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)	2.7	3.0	2.7	4.7
To be settled in cash
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Total stock-based compensation expense (income)	0.9	(0.1)	1.2	(0.4)
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	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)	$ 0.9	$ (0.1)	$ 1.2	$ (0.4)

Employee contributions to stock compensation plans.

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Amount of expense for award under share-based payment arrangement. Excludes amount capitalized.

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Amount of noncash expense for share-based payment arrangement.

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