Acquisitions, Goodwill and Other Intangible Assets (Amortization Expense) (Details) - USD ($) $ in Millions	3 Months Ended	9 Months Ended
Sep. 30, 2025	Sep. 30, 2024	Sep. 30, 2025	Sep. 30, 2024	Dec. 31, 2024
Goodwill and Intangible Assets Disclosure [Abstract]
Amortization expense	$ 15.1	$ 14.7	$ 44.8	$ 49.9
Finite-Lived Intangible Assets, Net, Amortization Expense, Fiscal Year Maturity [Abstract]
Remainder of 2025 (October 1 through December 31)	15.4		15.4
2026	56.6		56.6
2027	50.0		50.0
2028	45.9		45.9
2029	42.8		42.8
Thereafter	185.3		185.3
Total	$ 396.0		$ 396.0		$ 408.8

The aggregate expense charged against earnings to allocate the cost of intangible assets (nonphysical assets not used in production) in a systematic and rational manner to the periods expected to benefit from such assets.

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