Segment Information (Segment Select Balance Sheet) (Detail) - USD ($) $ in Millions	Apr. 03, 2020	Jan. 03, 2020
Segment Reporting Information [Line Items]
Accounts receivable, net	$ 546.6	$ 608.2
Inventory, Net	327.2	312.1
Goodwill	3,783.6	3,680.6
Buildings and Infrastructure [Member]
Segment Reporting Information [Line Items]
Accounts receivable, net	183.6	232.0
Inventory, Net	62.8	67.1
Goodwill	1,954.9	1,973.0
Geospatial [Member]
Segment Reporting Information [Line Items]
Accounts receivable, net	102.7	115.5
Inventory, Net	128.5	125.0
Goodwill	393.8	401.5
Resources and Utilities [Member]
Segment Reporting Information [Line Items]
Accounts receivable, net	104.5	93.3
Inventory, Net	44.2	45.5
Goodwill	434.6	445.4
Transportation [Member]
Segment Reporting Information [Line Items]
Accounts receivable, net	155.8	167.4
Inventory, Net	91.7	74.5
Goodwill	$ 1,000.3	$ 860.7

Amount, after allowance for credit loss, of right to consideration from customer for product sold and service rendered in normal course of business, classified as current.

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