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Segment Information (Segment Revenue by Geographic Areas) (Details) - USD ($) $ in Millions	3 Months Ended
	Apr. 02, 2021	Apr. 03, 2020
Segment Reporting Information [Line Items]
Revenue	$ 886.7	$ 794.0
North America
Segment Reporting Information [Line Items]
Revenue	450.4	414.4
Europe
Segment Reporting Information [Line Items]
Revenue	280.2	241.8
Asia Pacific
Segment Reporting Information [Line Items]
Revenue	109.8	93.8
Rest of World
Segment Reporting Information [Line Items]
Revenue	46.3	44.0
United States
Segment Reporting Information [Line Items]
Revenue	406.8	378.8
Buildings and Infrastructure
Segment Reporting Information [Line Items]
Revenue	343.1	296.9
Buildings and Infrastructure | North America
Segment Reporting Information [Line Items]
Revenue	199.8	172.1
Buildings and Infrastructure | Europe
Segment Reporting Information [Line Items]
Revenue	94.3	81.6
Buildings and Infrastructure | Asia Pacific
Segment Reporting Information [Line Items]
Revenue	43.6	37.1
Buildings and Infrastructure | Rest of World
Segment Reporting Information [Line Items]
Revenue	5.4	6.1
Geospatial
Segment Reporting Information [Line Items]
Revenue	181.7	146.2
Geospatial | North America
Segment Reporting Information [Line Items]
Revenue	72.5	56.8
Geospatial | Europe
Segment Reporting Information [Line Items]
Revenue	60.4	50.7
Geospatial | Asia Pacific
Segment Reporting Information [Line Items]
Revenue	37.5	28.7
Geospatial | Rest of World
Segment Reporting Information [Line Items]
Revenue	11.3	10.0
Resources and Utilities
Segment Reporting Information [Line Items]
Revenue	205.2	180.3
Resources and Utilities | North America
Segment Reporting Information [Line Items]
Revenue	53.6	53.7
Resources and Utilities | Europe
Segment Reporting Information [Line Items]
Revenue	105.8	90.4
Resources and Utilities | Asia Pacific
Segment Reporting Information [Line Items]
Revenue	21.0	17.5
Resources and Utilities | Rest of World
Segment Reporting Information [Line Items]
Revenue	24.8	18.7
Transportation
Segment Reporting Information [Line Items]
Revenue	156.7	170.6
Transportation | North America
Segment Reporting Information [Line Items]
Revenue	124.5	131.8
Transportation | Europe
Segment Reporting Information [Line Items]
Revenue	19.7	19.1
Transportation | Asia Pacific
Segment Reporting Information [Line Items]
Revenue	7.7	10.5
Transportation | Rest of World
Segment Reporting Information [Line Items]
Revenue	$ 4.8	$ 9.2

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Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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Reference 12: http://www.xbrl.org/2003/role/disclosureRef
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