Goodwill and Other Intangible Assets - Narrative (Detail) - USD ($)	3 Months Ended
	Mar. 28, 2020	Mar. 30, 2019	Dec. 28, 2019
Acquired Finite And Indefinite Lived Intangible Assets [Line Items]
Goodwill	$ 898,200,000		$ 913,800,000
Accumulated impairment losses	$ 0
Weighted-average amortization period (in years)	11 years
Aggregate amortization expense	$ 5,700,000	$ 5,400,000
Estimated annual amortization expense for fiscal period 2020	21,600,000
Estimated annual amortization expense for fiscal period 2021	19,000,000.0
Estimated annual amortization expense for fiscal period 2022	15,900,000
Estimated annual amortization expense for fiscal period 2023	13,400,000
Estimated annual amortization expense for fiscal period 2024	10,600,000
Estimated annual amortization expense for fiscal period 2025	6,300,000
Sigmavision
Acquired Finite And Indefinite Lived Intangible Assets [Line Items]
Goodwill	5,500,000
Cognitran Limited
Acquired Finite And Indefinite Lived Intangible Assets [Line Items]
Goodwill	$ 11,600,000
Customer relationships
Acquired Finite And Indefinite Lived Intangible Assets [Line Items]
Weighted-average amortization period (in years)	15 years
Customer relationship contractual term, minimum (in years)	3 years
Customer relationship contractual term, maximum (in years)	5 years
Repair Systems & Information Group
Acquired Finite And Indefinite Lived Intangible Assets [Line Items]
Goodwill	$ 611,000,000.0		$ 615,100,000
Repair Systems & Information Group | Sigmavision
Acquired Finite And Indefinite Lived Intangible Assets [Line Items]
Goodwill	5,500,000
Repair Systems & Information Group | Cognitran Limited
Acquired Finite And Indefinite Lived Intangible Assets [Line Items]
Goodwill	$ 11,600,000