Goodwill and Other Identifiable Intangible Assets - Definite-life Intangible Assets (Details) - USD ($) $ in Millions	Mar. 31, 2024	Dec. 31, 2023
Finite-Lived Intangible Assets, Net [Abstract]
Cost	$ 1,763.4	$ 1,766.5
Accumulated amortization	(649.2)	(624.9)
Net	1,114.2	1,141.6
Customer relationships
Finite-Lived Intangible Assets, Net [Abstract]
Cost	1,681.9	1,684.8
Accumulated amortization	(620.1)	(599.3)
Net	1,061.8	1,085.5
Proprietary technology and patents
Finite-Lived Intangible Assets, Net [Abstract]
Cost	63.5	63.7
Accumulated amortization	(22.3)	(20.8)
Net	41.2	42.9
Other finite-lived intangible assets
Finite-Lived Intangible Assets, Net [Abstract]
Cost	18.0	18.0
Accumulated amortization	(6.8)	(4.8)
Net	$ 11.2	$ 13.2