Goodwill and Other Identifiable Intangible Assets - Identifiable Intangible Assets (Detail) - USD ($)	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Acquired Intangible Assets by Major Class [Line Items]
Impairment of Intangible Assets (Excluding Goodwill)	$ 0	$ 0	$ 0
Finite-life intangibles, cost	605,100,000	482,800,000
Accumulated amortization	(352,200,000)	(337,500,000)
Finite-life intangibles, net	252,900,000	145,300,000
Indefinite-life intangibles	175,100,000	180,600,000
Total intangibles, cost	780,200,000	663,400,000
Total intangibles, net	428,000,000.0	325,900,000
Customer relationships
Acquired Intangible Assets by Major Class [Line Items]
Finite-life intangibles, cost	558,800,000	435,900,000
Accumulated amortization	(320,100,000)	(308,100,000)
Finite-life intangibles, net	238,700,000	127,800,000
Proprietary technology and patents
Acquired Intangible Assets by Major Class [Line Items]
Finite-life intangibles, cost	46,300,000	46,900,000
Accumulated amortization	(32,100,000)	(29,400,000)
Finite-life intangibles, net	$ 14,200,000	$ 17,500,000