Goodwill and Other Intangible Assets, Net - Other Intangible Assets (Detail) - USD ($) $ in Millions	Dec. 31, 2021	Dec. 31, 2020
Finite-Lived Intangible Assets [Line Items]
Total finite-lived intangibles	$ 223.9	$ 226.2
Accumulated amortization	(154.6)	(136.6)
Finite-live intangible asset, net	69.3	89.6
Indefinite-lived intangibles	16.4	16.8
Other intangible assets	240.3	243.0
Other intangible assets, net	85.7	106.4
Customer relationships
Finite-Lived Intangible Assets [Line Items]
Total finite-lived intangibles	162.1	163.3
Accumulated amortization	(113.7)	(101.7)
Finite-live intangible asset, net	48.4	61.6
Proprietary technology
Finite-Lived Intangible Assets [Line Items]
Total finite-lived intangibles	46.1	46.7
Accumulated amortization	(26.9)	(23.4)
Finite-live intangible asset, net	19.2	23.3
Trademarks and other
Finite-Lived Intangible Assets [Line Items]
Total finite-lived intangibles	15.7	16.2
Accumulated amortization	(14.0)	(11.5)
Finite-live intangible asset, net	$ 1.7	$ 4.7

Finite And Infinite Lived Intangible Assets Gross

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Accumulated amount of amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life.

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Amount before amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life.

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