Segment Information (Segment Revenue by Geographic Areas) (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jul. 02, 2021	Jul. 03, 2020	Jul. 02, 2021	Jul. 03, 2020
Segment Reporting Information [Line Items]
Revenue	$ 945.3	$ 735.2	$ 1,832.0	$ 1,529.2
North America
Segment Reporting Information [Line Items]
Revenue	493.1	402.1	943.5	816.5
Europe
Segment Reporting Information [Line Items]
Revenue	291.9	207.1	572.1	448.9
Asia Pacific
Segment Reporting Information [Line Items]
Revenue	108.0	90.8	217.8	184.6
Rest of World
Segment Reporting Information [Line Items]
Revenue	52.3	35.2	98.6	79.2
United States
Segment Reporting Information [Line Items]
Revenue	443.3	368.7	850.1	747.5
Buildings and Infrastructure
Segment Reporting Information [Line Items]
Revenue	364.8	295.3	707.9	592.2
Buildings and Infrastructure | North America
Segment Reporting Information [Line Items]
Revenue	212.2	175.6	412.0	347.7
Buildings and Infrastructure | Europe
Segment Reporting Information [Line Items]
Revenue	101.0	78.0	195.3	159.6
Buildings and Infrastructure | Asia Pacific
Segment Reporting Information [Line Items]
Revenue	45.8	36.4	89.4	73.5
Buildings and Infrastructure | Rest of World
Segment Reporting Information [Line Items]
Revenue	5.8	5.3	11.2	11.4
Geospatial
Segment Reporting Information [Line Items]
Revenue	219.7	145.2	401.4	291.4
Geospatial | North America
Segment Reporting Information [Line Items]
Revenue	97.2	57.7	169.7	114.5
Geospatial | Europe
Segment Reporting Information [Line Items]
Revenue	72.2	45.1	132.6	95.8
Geospatial | Asia Pacific
Segment Reporting Information [Line Items]
Revenue	39.5	33.4	77.0	62.1
Geospatial | Rest of World
Segment Reporting Information [Line Items]
Revenue	10.8	9.0	22.1	19.0
Resources and Utilities
Segment Reporting Information [Line Items]
Revenue	197.5	143.8	402.7	324.1
Resources and Utilities | North America
Segment Reporting Information [Line Items]
Revenue	60.4	51.8	114.0	105.5
Resources and Utilities | Europe
Segment Reporting Information [Line Items]
Revenue	93.6	63.3	199.4	153.7
Resources and Utilities | Asia Pacific
Segment Reporting Information [Line Items]
Revenue	15.1	14.0	36.1	31.5
Resources and Utilities | Rest of World
Segment Reporting Information [Line Items]
Revenue	28.4	14.7	53.2	33.4
Transportation
Segment Reporting Information [Line Items]
Revenue	163.3	150.9	320.0	321.5
Transportation | North America
Segment Reporting Information [Line Items]
Revenue	123.3	117.0	247.8	248.8
Transportation | Europe
Segment Reporting Information [Line Items]
Revenue	25.1	20.7	44.8	39.8
Transportation | Asia Pacific
Segment Reporting Information [Line Items]
Revenue	7.6	7.0	15.3	17.5
Transportation | Rest of World
Segment Reporting Information [Line Items]
Revenue	$ 7.3	$ 6.2	$ 12.1	$ 15.4