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Acquisitions - Additional Information (Detail) - USD ($) $ in Millions		3 Months Ended
	Mar. 24, 2020	Mar. 31, 2020	Mar. 31, 2019
Business Acquisition [Line Items]
Revenues		$ 1,173.6	$ 1,137.2
Captricity [Member]
Business Acquisition [Line Items]
Business acquisition, effective date of acquisition	Mar. 24, 2020
Consideration paid, net of cash plus the costs of transaction	$ 15.3
Revenues		$ 0.1
Captricity [Member] \| Completed Technology [Member]
Business Acquisition [Line Items]
Amortized period		7 years
Captricity [Member] \| Customer Relationships [Member]
Business Acquisition [Line Items]
Amortized period		15 years