Goodwill and Other Identifiable Intangible Assets - Identifiable Intangible Assets (Detail) - USD ($)	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Acquired Intangible Assets by Major Class [Line Items]
Impairment charges, excluding goodwill	$ 0	$ 2,700,000	$ 0
Finite-life intangibles, cost	1,195,900,000	1,204,600,000
Accumulated amortization	(405,000,000.0)	(358,900,000)
Finite-life intangibles, net	790,900,000	845,700,000
Indefinite-life intangibles	251,500,000	248,900,000
Total intangibles, cost	1,447,400,000	1,453,500,000
Total intangibles, net	1,042,400,000	1,094,600,000
Amortization	55,300,000	52,500,000	$ 26,300,000
Customer relationships
Acquired Intangible Assets by Major Class [Line Items]
Finite-life intangibles, cost	1,106,200,000	1,100,900,000
Accumulated amortization	(361,800,000)	(308,900,000)
Finite-life intangibles, net	744,400,000	792,000,000.0
Proprietary technology and patents
Acquired Intangible Assets by Major Class [Line Items]
Finite-life intangibles, cost	89,700,000	89,300,000
Accumulated amortization	(43,200,000)	(35,600,000)
Finite-life intangibles, net	46,500,000	53,700,000
Other intangible assets
Acquired Intangible Assets by Major Class [Line Items]
Finite-life intangibles, cost	0	14,400,000
Accumulated amortization	0	(14,400,000)
Finite-life intangibles, net	$ 0	$ 0