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Acquisitions - Narrative (Detail) - USD ($) $ in Millions					6 Months Ended
	Jul. 01, 2021	Feb. 26, 2021	Sep. 28, 2020	Jan. 31, 2020	Jul. 03, 2021	Jun. 27, 2020	Jan. 02, 2021
Business Acquisition [Line Items]
Payment to acquire business, net of cash acquired					$ 195.8	$ 6.1
Goodwill					1,177.6		$ 982.4
Dealer-FX
Business Acquisition [Line Items]
Payment to acquire business, net of cash acquired		$ 200.0
Cash purchase price of acquisition		$ 200.1
Goodwill					195.2
AutoCrib
Business Acquisition [Line Items]
Cash purchase price of acquisition			$ 35.4
Goodwill					18.3
Sigmavision
Business Acquisition [Line Items]
Cash purchase price of acquisition				$ 5.9
Goodwill					5.6
Secateurs Pradines
Business Acquisition [Line Items]
Equity method investment, ownership percentage	100.00%
Consideration transferred, including equity interest	$ 20.0
Payment to acquire business, net of cash acquired	15.8
Other cash payment to acquire business	$ 1.8
Goodwill					$ 9.6
Deville S.A. | Secateurs Pradines
Business Acquisition [Line Items]
Equity method investment, ownership percentage	35.00%
Equity method investments	$ 21.8

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Fair value at acquisition-date of the assets transferred by the acquirer, liabilities incurred by the acquirer, and equity interests issued by the acquirer, including but not limited to, instruments or interests issued or issuable in consideration for the business combination.

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The percentage of ownership of common stock or equity participation in the investee accounted for under the equity method of accounting.

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