Goodwill and Other Intangible Assets - Narrative (Detail) - USD ($)	3 Months Ended		9 Months Ended
	Sep. 28, 2019	Sep. 29, 2018	Sep. 28, 2019	Sep. 29, 2018	Dec. 29, 2018
Acquired Finite And Indefinite Lived Intangible Assets [Line Items]
Goodwill	$ 920,100,000		$ 920,100,000		$ 902,200,000
Gross Carrying Value	402,500,000		402,500,000		393,500,000
Accumulated impairment losses	0		$ 0
Weighted-average amortization period (in years)			12 years
Aggregate amortization expense	5,500,000	$ 6,200,000	$ 16,300,000	$ 19,200,000
Estimated annual amortization expense for fiscal period 2019	21,600,000		21,600,000
Estimated annual amortization expense for fiscal period 2020	19,200,000		19,200,000
Estimated annual amortization expense for fiscal period 2021	17,100,000		17,100,000
Estimated annual amortization expense for fiscal period 2022	14,000,000.0		14,000,000.0
Estimated annual amortization expense for fiscal period 2023	12,400,000		12,400,000
Estimated annual amortization expense for fiscal period 2024	10,200,000		10,200,000
Cognitran Limited
Acquired Finite And Indefinite Lived Intangible Assets [Line Items]
Goodwill	27,700,000		27,700,000
Power Hawk Technologies Inc
Acquired Finite And Indefinite Lived Intangible Assets [Line Items]
Goodwill	6,400,000		6,400,000
TMB GeoMarketing Limited
Acquired Finite And Indefinite Lived Intangible Assets [Line Items]
Goodwill	1,300,000		1,300,000
Customer relationships
Acquired Finite And Indefinite Lived Intangible Assets [Line Items]
Gross Carrying Value	171,300,000		$ 171,300,000		$ 172,200,000
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
Customer relationships | Power Hawk Technologies Inc
Acquired Finite And Indefinite Lived Intangible Assets [Line Items]
Gross Carrying Value	$ 900,000		$ 900,000