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Business Segments (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Segment Reporting Information [Line Items]
Net revenues	$ 1,202.5	$ 1,086.3
Percent change in net sales	10.70%
Gross profit	$ 750.5	667.6
Percent change in gross profit	12.40%
Operating profit	$ 341.9	292.6
Percent change in operating profit	16.80%
Long-lived assets	$ 176.1	165.0
Percent change in long-lived assets	6.80%
Operating Segments | RF Technology
Segment Reporting Information [Line Items]
Net revenues	$ 481.6	429.6
Percent change in net sales	12.10%
Gross profit	$ 301.7	251.5
Percent change in gross profit	20.00%
Operating profit	$ 120.3	89.0
Percent change in operating profit	35.20%
Long-lived assets	$ 88.9	76.7
Percent change in long-lived assets	16.00%
Operating Segments | Medical & Scientific Imaging
Segment Reporting Information [Line Items]
Net revenues	$ 366.3	348.2
Percent change in net sales	5.20%
Gross profit	$ 261.0	251.9
Percent change in gross profit	3.60%
Operating profit	$ 120.7	119.8
Percent change in operating profit	0.70%
Long-lived assets	$ 46.5	44.7
Percent change in long-lived assets	4.20%
Operating Segments | Industrial Technology
Segment Reporting Information [Line Items]
Net revenues	$ 216.1	183.4
Percent change in net sales	17.80%
Gross profit	$ 108.6	93.1
Percent change in gross profit	16.60%
Operating profit	$ 65.7	53.6
Percent change in operating profit	22.60%
Long-lived assets	$ 30.3	34.1
Percent change in long-lived assets	(11.00%)
Operating Segments | Energy Systems & Controls
Segment Reporting Information [Line Items]
Net revenues	$ 138.5	125.1
Percent change in net sales	10.80%
Gross profit	$ 79.2	71.1
Percent change in gross profit	11.40%
Operating profit	$ 35.2	30.2
Percent change in operating profit	16.50%
Long-lived assets	$ 10.4	9.5
Percent change in long-lived assets	8.50%
Corporate
Segment Reporting Information [Line Items]
Unallocated corporate general and administrative expenses	$ 41.7	$ 34.3

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The percent change in aggregate revenue less cost of goods and services sold or operating expenses directly attributable to the revenue generation activity, from the previous period to the current period.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 225
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