Segment and Geographic Area Information - Schedule of Revenue from External Customers Attributed to Foreign Countries by Geographic Area (Details) - USD ($) $ in Millions	3 Months Ended								12 Months Ended
	Dec. 31, 2018	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	Dec. 31, 2017	Sep. 30, 2017	Jun. 30, 2017	Mar. 31, 2017	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Segment Reporting Information [Line Items]
Net revenues	$ 1,376.3	$ 1,318.7	$ 1,293.7	$ 1,202.5	$ 1,226.6	$ 1,159.9	$ 1,134.7	$ 1,086.3	$ 5,191.2	$ 4,607.5	$ 3,789.9
Canada
Segment Reporting Information [Line Items]
Net revenues									211.3	187.1	157.6
Canada | RF Technology
Segment Reporting Information [Line Items]
Net revenues									90.8	73.3	52.7
Canada | Medical & Scientific Imaging
Segment Reporting Information [Line Items]
Net revenues									19.2	23.5	22.0
Canada | Industrial Technology
Segment Reporting Information [Line Items]
Net revenues									73.7	64.1	60.5
Canada | Energy Systems & Controls
Segment Reporting Information [Line Items]
Net revenues									27.6	26.2	22.4
Europe
Segment Reporting Information [Line Items]
Net revenues									680.0	596.2	508.0
Europe | RF Technology
Segment Reporting Information [Line Items]
Net revenues									152.2	140.4	71.7
Europe | Medical & Scientific Imaging
Segment Reporting Information [Line Items]
Net revenues									284.9	244.0	228.1
Europe | Industrial Technology
Segment Reporting Information [Line Items]
Net revenues									102.4	92.4	89.2
Europe | Energy Systems & Controls
Segment Reporting Information [Line Items]
Net revenues									140.5	119.4	119.0
Asia
Segment Reporting Information [Line Items]
Net revenues									349.9	325.4	302.7
Asia | RF Technology
Segment Reporting Information [Line Items]
Net revenues									14.9	10.2	12.0
Asia | Medical & Scientific Imaging
Segment Reporting Information [Line Items]
Net revenues									129.8	119.2	111.8
Asia | Industrial Technology
Segment Reporting Information [Line Items]
Net revenues									65.2	58.3	52.1
Asia | Energy Systems & Controls
Segment Reporting Information [Line Items]
Net revenues									140.0	137.7	126.8
Middle East
Segment Reporting Information [Line Items]
Net revenues									102.1	112.5	101.2
Middle East | RF Technology
Segment Reporting Information [Line Items]
Net revenues									50.9	61.4	50.6
Middle East | Medical & Scientific Imaging
Segment Reporting Information [Line Items]
Net revenues									13.4	11.1	10.1
Middle East | Industrial Technology
Segment Reporting Information [Line Items]
Net revenues									3.5	4.8	3.0
Middle East | Energy Systems & Controls
Segment Reporting Information [Line Items]
Net revenues									34.3	35.2	37.5
Rest of the world
Segment Reporting Information [Line Items]
Net revenues									134.8	120.0	105.5
Rest of the world | RF Technology
Segment Reporting Information [Line Items]
Net revenues									30.9	26.2	17.0
Rest of the world | Medical & Scientific Imaging
Segment Reporting Information [Line Items]
Net revenues									27.5	22.7	21.6
Rest of the world | Industrial Technology
Segment Reporting Information [Line Items]
Net revenues									24.4	21.5	20.7
Rest of the world | Energy Systems & Controls
Segment Reporting Information [Line Items]
Net revenues									52.0	49.6	46.2
Non-U.S.
Segment Reporting Information [Line Items]
Net revenues									1,478.1	1,341.2	1,175.0
Non-U.S. | RF Technology
Segment Reporting Information [Line Items]
Net revenues									339.7	311.5	204.0
Non-U.S. | Medical & Scientific Imaging
Segment Reporting Information [Line Items]
Net revenues									474.8	420.5	393.6
Non-U.S. | Industrial Technology
Segment Reporting Information [Line Items]
Net revenues									269.2	241.1	225.5
Non-U.S. | Energy Systems & Controls
Segment Reporting Information [Line Items]
Net revenues									$ 394.4	$ 368.1	$ 351.9