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Acquisitions - Narrative (Detail) - USD ($) $ in Millions |  |  |  |  | 9 Months Ended |
--- | --- | --- | --- | --- | --- | ---
Aug. 07, 2019 | Apr. 02, 2019 | Jan. 25, 2019 | Jan. 31, 2018 | Sep. 28, 2019 | Sep. 29, 2018 | Dec. 29, 2018
Business Acquisition [Line Items] |  |  |  |  |  |  |
Payment to acquire business, net of cash acquired |  |  |  |  | $ 38.9 | $ 3.0 |
Goodwill |  |  |  |  | 920.1 |  | $ 902.2
Cognitran Limited |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |
Cash purchase price of acquisition | $ 30.7 |  |  |  |  |  |
Payment to acquire business, net of cash acquired | $ 29.7 |  |  |  |  |  |
Goodwill |  |  |  |  | 27.7 |  |
Power Hawk Technologies Inc |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |
Cash purchase price of acquisition |  | $ 7.9 |  |  |  |  |
Goodwill |  |  |  |  | 6.4 |  |
TMB GeoMarketing Limited |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |
Cash purchase price of acquisition |  |  | $ 1.3 |  |  |  |
Goodwill |  |  |  |  | $ 1.3 |  |
George A. Sturdevant, Inc. (d/b/a Fastorq) |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |
Cash purchase price of acquisition |  |  |  | $ 3.0 |  |  |
Goodwill |  |  |  |  |  |  | $ 2.6

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