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Acquisitions - Narrative (Detail) - USD ($) $ in Millions |  |  |  |  |  |  | 12 Months Ended
--- | --- | --- | --- | --- | --- | --- | ---
Sep. 28, 2020 | Jan. 31, 2020 | Aug. 07, 2019 | Apr. 02, 2019 | Jan. 25, 2019 | Jan. 31, 2018 | Jan. 02, 2021 | Dec. 28, 2019 | Dec. 29, 2018
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |
Goodwill |  |  |  |  |  |  | $ 982.4 | $ 913.8 | $ 902.2
Cash purchase price of acquisition, net of cash acquired |  |  |  |  |  |  | 41.5 | 38.6 | 3.0
AutoCrib |  |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |
Cash purchase price of acquisition | $ 35.4 |  |  |  |  |  |  |  |
Goodwill |  |  |  |  |  |  | 18.3 |  |
Sigmavision Limited |  |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |
Cash purchase price of acquisition |  | $ 5.9 |  |  |  |  |  |  |
Goodwill |  |  |  |  |  |  | 5.6 |  |
Cognitran Limited |  |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |
Cash purchase price of acquisition |  |  | $ 30.6 |  |  |  |  |  |
Goodwill |  |  |  |  |  |  | 14.5 | 11.4 |
Cash purchase price of acquisition, net of cash acquired |  |  | $ 29.6 |  |  |  |  |  |
Working capital adjustment |  |  |  |  |  |  | $ 0.2 |  |
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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