Segment Information - Segment Revenue by Geographic Areas (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Oct. 02, 2020	Sep. 27, 2019	Oct. 02, 2020	Sep. 27, 2019
Segment Reporting Information [Line Items]
Revenue	$ 792.8	$ 784.3	$ 2,322.0	$ 2,444.6
North America
Segment Reporting Information [Line Items]
Revenue	415.2	437.7	1,231.7	1,345.4
Europe
Segment Reporting Information [Line Items]
Revenue	223.4	205.5	672.3	691.0
Asia Pacific
Segment Reporting Information [Line Items]
Revenue	105.8	91.4	290.4	274.8
Rest of World
Segment Reporting Information [Line Items]
Revenue	48.4	49.7	127.6	133.4
United States
Segment Reporting Information [Line Items]
Revenue	377.5	404.1	1,125.0	1,228.8
Buildings and Infrastructure
Segment Reporting Information [Line Items]
Revenue	317.4	309.8	909.6	944.4
Buildings and Infrastructure | North America
Segment Reporting Information [Line Items]
Revenue	179.5	180.9	527.2	545.7
Buildings and Infrastructure | Europe
Segment Reporting Information [Line Items]
Revenue	85.5	79.9	245.1	253.8
Buildings and Infrastructure | Asia Pacific
Segment Reporting Information [Line Items]
Revenue	45.3	41.3	118.8	121.9
Buildings and Infrastructure | Rest of World
Segment Reporting Information [Line Items]
Revenue	7.1	7.7	18.5	23.0
Geospatial
Segment Reporting Information [Line Items]
Revenue	165.6	155.1	457.0	480.7
Geospatial | North America
Segment Reporting Information [Line Items]
Revenue	64.8	63.4	179.3	197.6
Geospatial | Europe
Segment Reporting Information [Line Items]
Revenue	56.9	49.5	152.7	160.2
Geospatial | Asia Pacific
Segment Reporting Information [Line Items]
Revenue	35.0	30.4	97.1	88.3
Geospatial | Rest of World
Segment Reporting Information [Line Items]
Revenue	8.9	11.8	27.9	34.6
Resources and Utilities
Segment Reporting Information [Line Items]
Revenue	150.6	121.1	474.7	433.3
Resources and Utilities | North America
Segment Reporting Information [Line Items]
Revenue	42.5	35.9	148.0	130.7
Resources and Utilities | Europe
Segment Reporting Information [Line Items]
Revenue	62.5	54.2	216.2	211.1
Resources and Utilities | Asia Pacific
Segment Reporting Information [Line Items]
Revenue	16.8	10.4	48.3	35.0
Resources and Utilities | Rest of World
Segment Reporting Information [Line Items]
Revenue	28.8	20.6	62.2	56.5
Transportation
Segment Reporting Information [Line Items]
Revenue	159.2	198.3	480.7	586.2
Transportation | North America
Segment Reporting Information [Line Items]
Revenue	128.4	157.5	377.2	471.4
Transportation | Europe
Segment Reporting Information [Line Items]
Revenue	18.5	21.9	58.3	65.9
Transportation | Asia Pacific
Segment Reporting Information [Line Items]
Revenue	8.7	9.3	26.2	29.6
Transportation | Rest of World
Segment Reporting Information [Line Items]
Revenue	$ 3.6	$ 9.6	$ 19.0	$ 19.3