Segment Reporting (Income From Operations and Total Assets) (Details) - USD ($) $ in Millions	3 Months Ended
Mar. 31, 2025	Mar. 31, 2024
Reconciliation of Income From Operations from Segments to Consolidated
Income from operations	$ 49.4	$ 273.6
Impairment charges	(1.1)	0.0
Amortization of intangibles	(15.3)	(13.9)
Consolidated income from operations	49.4	273.6
Operating Segments
Reconciliation of Income From Operations from Segments to Consolidated
Income from operations	134.0	344.6
Consolidated income from operations	134.0	344.6
Other
Reconciliation of Income From Operations from Segments to Consolidated
Other	0.0	4.9
Impairment charges	(1.1)	0.0
Corporate expenses	(48.1)	(53.0)
Amortization of intangibles	(15.3)	(13.9)
Stock compensation expense	(7.1)	(8.0)
Restructuring and business optimization expenses	$ (13.0)	$ (1.0)

Amount, after tax, of expense for award under share-based payment arrangement.

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The aggregate total of expenses of managing and administering the affairs of an entity, including affiliates of the reporting entity, which are not directly or indirectly associated with the manufacture, sale or creation of a product or product line.

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The net result for the period of deducting operating expenses from operating revenues.

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Amount of expenses associated with exit or disposal activities pursuant to an authorized plan. Excludes expenses related to a discontinued operation or an asset retirement obligation.

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Amount of other expense (income) and loss (gain) calculated as difference between segment revenue and separately disclosed expense category to arrive at segment profit (loss).

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