Goodwill and Other Identifiable Intangible Assets - Identifiable Intangible Assets (Details) - USD ($) $ in Millions	Dec. 31, 2025	Dec. 31, 2024
Acquired Intangible Assets by Major Class [Line Items]
Finite-life intangibles, cost	$ 2,155.3	$ 1,713.6
Accumulated amortization	(646.4)	(497.1)
Finite-life intangibles, net	1,508.9	1,216.5
Indefinite-life intangibles	367.6	370.5
Total intangibles, cost	2,522.9	2,084.1
Total intangibles, net	1,876.5	1,587.0
Customer relationships
Acquired Intangible Assets by Major Class [Line Items]
Finite-life intangibles, cost	1,904.0	1,571.7
Accumulated amortization	(551.5)	(458.7)
Finite-life intangibles, net	1,352.5	1,113.0
Proprietary technologies and patents
Acquired Intangible Assets by Major Class [Line Items]
Finite-life intangibles, cost	111.8	78.2
Accumulated amortization	(31.8)	(19.5)
Finite-life intangibles, net	80.0	58.7
Other definite-life intangible assets
Acquired Intangible Assets by Major Class [Line Items]
Finite-life intangibles, cost	139.5	63.7
Accumulated amortization	(63.1)	(18.9)
Finite-life intangibles, net	$ 76.4	$ 44.8