Segment Information Detailed Segment Data (Details) - USD ($) $ in Millions	3 Months Ended	9 Months Ended
Sep. 29, 2017	Sep. 30, 2016	Sep. 29, 2017	Sep. 30, 2016	Dec. 31, 2016
Segment Reporting Information [Line Items]
Sales	$ 1,685.3	$ 1,567.4	$ 4,849.3	$ 4,597.2
Operating Profit	355.9	323.2	999.1	908.3
Assets	9,327.0		9,327.0		$ 8,189.8
Operating Segments \| Professional Instrumentation
Segment Reporting Information [Line Items]
Sales	786.8	723.5	2,261.9	2,145.1
Operating Profit	178.6	161.5	521.5	469.9
Assets	4,661.7		4,661.7		3,905.2
Operating Segments \| Industrial Technologies
Segment Reporting Information [Line Items]
Sales	898.5	843.9	2,587.4	2,452.1
Operating Profit	196.2	180.6	530.3	484.7
Assets	3,735.1		3,735.1		3,294.8
Corporate, Non-Segment [Member]
Segment Reporting Information [Line Items]
Operating Profit	(18.9)	$ (18.9)	(52.7)	$ (46.3)
Assets	$ 930.2		$ 930.2		$ 989.8

Sum of the carrying amounts as of the balance sheet date of all assets that are recognized. Assets are probable future economic benefits obtained or controlled by an entity as a result of past transactions or events.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 944
-SubTopic 210
-Section S99
-Paragraph 1
-Subparagraph (SX 210.7-03(a)(12))
-URI http://asc.fasb.org/extlink&oid=6879938&loc=d3e572229-122910

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 942
-SubTopic 210
-Section S99
-Paragraph 1
-Subparagraph (SX 210.9-03(11))
-URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878

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+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 225
-SubTopic 10
-Section S99
-Paragraph 2
-Subparagraph (SX 210.5-03.1)
-URI http://asc.fasb.org/extlink&oid=63488584&loc=d3e20235-122688

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