Goodwill and Other Identifiable Intangible Assets - Definite-life Intangible Assets (Details) - USD ($) $ in Millions	Mar. 31, 2026	Dec. 31, 2025
Finite-Lived Intangible Assets, Net [Abstract]
Cost	$ 2,154.3	$ 2,155.3
Accumulated amortization	(687.2)	(646.4)
Net	1,467.1	1,508.9
Customer relationships
Finite-Lived Intangible Assets, Net [Abstract]
Cost	1,902.9	1,904.0
Accumulated amortization	(575.2)	(551.5)
Net	1,327.7	1,352.5
Proprietary technologies and patents
Finite-Lived Intangible Assets, Net [Abstract]
Cost	111.9	111.8
Accumulated amortization	(35.3)	(31.8)
Net	76.6	80.0
Other definite-lived intangible assets
Finite-Lived Intangible Assets, Net [Abstract]
Cost	139.5	139.5
Accumulated amortization	(76.7)	(63.1)
Net	$ 62.8	$ 76.4