Segment Information (Segment Revenue by Geographic Areas) (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Oct. 01, 2021	Oct. 02, 2020	Oct. 01, 2021	Oct. 02, 2020
Segment Reporting Information [Line Items]
Revenue	$ 901.4	$ 792.8	$ 2,733.4	$ 2,322.0
North America
Segment Reporting Information [Line Items]
Revenue	461.7	415.2	1,405.2	1,231.7
Europe
Segment Reporting Information [Line Items]
Revenue	264.0	223.4	836.1	672.3
Asia Pacific
Segment Reporting Information [Line Items]
Revenue	111.1	105.8	328.9	290.4
Rest of World
Segment Reporting Information [Line Items]
Revenue	64.6	48.4	163.2	127.6
United States
Segment Reporting Information [Line Items]
Revenue	415.2	377.5	1,265.3	1,125.0
Buildings and Infrastructure
Segment Reporting Information [Line Items]
Revenue	349.7	317.4	1,057.6	909.6
Buildings and Infrastructure | North America
Segment Reporting Information [Line Items]
Revenue	200.4	179.5	612.4	527.2
Buildings and Infrastructure | Europe
Segment Reporting Information [Line Items]
Revenue	95.2	85.5	290.5	245.1
Buildings and Infrastructure | Asia Pacific
Segment Reporting Information [Line Items]
Revenue	47.9	45.3	137.3	118.8
Buildings and Infrastructure | Rest of World
Segment Reporting Information [Line Items]
Revenue	6.2	7.1	17.4	18.5
Geospatial
Segment Reporting Information [Line Items]
Revenue	205.4	165.6	606.8	457.0
Geospatial | North America
Segment Reporting Information [Line Items]
Revenue	84.8	64.8	254.5	179.3
Geospatial | Europe
Segment Reporting Information [Line Items]
Revenue	68.3	56.9	200.9	152.7
Geospatial | Asia Pacific
Segment Reporting Information [Line Items]
Revenue	40.2	35.0	117.2	97.1
Geospatial | Rest of World
Segment Reporting Information [Line Items]
Revenue	12.1	8.9	34.2	27.9
Resources and Utilities
Segment Reporting Information [Line Items]
Revenue	184.8	150.6	587.5	474.7
Resources and Utilities | North America
Segment Reporting Information [Line Items]
Revenue	51.5	42.5	165.5	148.0
Resources and Utilities | Europe
Segment Reporting Information [Line Items]
Revenue	80.2	62.5	279.6	216.2
Resources and Utilities | Asia Pacific
Segment Reporting Information [Line Items]
Revenue	14.7	16.8	50.8	48.3
Resources and Utilities | Rest of World
Segment Reporting Information [Line Items]
Revenue	38.4	28.8	91.6	62.2
Transportation
Segment Reporting Information [Line Items]
Revenue	161.5	159.2	481.5	480.7
Transportation | North America
Segment Reporting Information [Line Items]
Revenue	125.0	128.4	372.8	377.2
Transportation | Europe
Segment Reporting Information [Line Items]
Revenue	20.3	18.5	65.1	58.3
Transportation | Asia Pacific
Segment Reporting Information [Line Items]
Revenue	8.3	8.7	23.6	26.2
Transportation | Rest of World
Segment Reporting Information [Line Items]
Revenue	$ 7.9	$ 3.6	$ 20.0	$ 19.0