Segment Information (Segment Select Balance Sheet) (Details) - USD ($) $ in Millions	Jul. 02, 2021	Jan. 01, 2021
Segment Reporting Information [Line Items]
Accounts receivable, net	$ 583.2	$ 620.5
Inventories	298.5	301.7
Goodwill	3,846.8	3,876.5
Buildings and Infrastructure
Segment Reporting Information [Line Items]
Accounts receivable, net	206.3	260.1
Inventories	58.9	59.1
Goodwill	1,983.6	1,997.4
Geospatial
Segment Reporting Information [Line Items]
Accounts receivable, net	123.0	117.5
Inventories	121.8	120.1
Goodwill	411.5	415.7
Resources and Utilities
Segment Reporting Information [Line Items]
Accounts receivable, net	101.0	91.2
Inventories	54.5	49.0
Goodwill	451.5	453.8
Transportation
Segment Reporting Information [Line Items]
Accounts receivable, net	152.9	151.7
Inventories	63.3	73.5
Goodwill	$ 1,000.2	$ 1,009.6