Goodwill and Other Identifiable Intangible Assets - Detail of Identifiable Intangible Assets (Detail) - USD ($) $ in Millions	Sep. 30, 2022	Dec. 31, 2021
Acquired Intangible Assets By Major Class [Line Items]
Cost	$ 1,193.8	$ 605.1
Accumulated amortization	(326.2)	(352.2)
Net	867.6	252.9
Total intangibles, cost	1,436.9	780.2
Total intangibles, net	1,110.7	428.0
Customer relationships
Acquired Intangible Assets By Major Class [Line Items]
Cost	1,087.8	558.8
Accumulated amortization	(285.3)	(320.1)
Net	802.5	238.7
Proprietary technology and patents
Acquired Intangible Assets By Major Class [Line Items]
Cost	91.6	46.3
Accumulated amortization	(33.7)	(32.1)
Net	57.9	14.2
Trade names intangibles
Acquired Intangible Assets By Major Class [Line Items]
Net, indefinite-life intangibles	243.1	175.1
Other intangible assets
Acquired Intangible Assets By Major Class [Line Items]
Cost	14.4	0.0
Accumulated amortization	(7.2)	0.0
Net	$ 7.2	$ 0.0