Acquisitions, Goodwill and Other Intangible Assets (Amortization Expense) (Details) - USD ($) $ in Millions	3 Months Ended	6 Months Ended
Jun. 30, 2026	Jun. 30, 2025	Jun. 30, 2026	Jun. 30, 2025	Dec. 31, 2025
Intangible Asset, Goodwill and Other [Abstract]
Amortization expense	$ 20.9	$ 15.3	$ 39.9	$ 29.7
Intangible Asset, Finite-Lived, after Accumulated Amortization, Estimated Amortization Expense, Fiscal Year Maturity [Abstract]
Remainder of 2026 (July 1 through December 31)	37.8		37.8
2027	73.1		73.1
2028	69.1		69.1
2029	66.0		66.0
2030	60.2		60.2
Thereafter	263.0		263.0
Total	$ 569.2		$ 569.2		$ 379.3

Amount of amortization expense for finite-lived intangible asset. Excludes goodwill and capitalized cost for software to be sold, leased, or marketed.

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