Goodwill and Other Intangible Assets Goodwill Rollforward (Details) - USD ($) $ in Millions	12 Months Ended
Dec. 31, 2017	Dec. 31, 2016
Goodwill [Roll Forward]
Goodwill, beginning of period	$ 3,979.0	$ 3,949.0
Goodwill attributable to acquisitions	1,035.2	113.2
Foreign currency translation & other	84.3	(83.2)
Goodwill, end of period	5,098.5	3,979.0
Professional Instrumentation [Member]
Goodwill [Roll Forward]
Goodwill, beginning of period	2,423.7	2,400.6
Goodwill attributable to acquisitions	851.8	61.3
Foreign currency translation & other	55.5	(38.2)
Goodwill, end of period	3,331.0	2,423.7
Industrial Technologies [Member]
Goodwill [Roll Forward]
Goodwill, beginning of period	1,555.3	1,548.4
Goodwill attributable to acquisitions	183.4	51.9
Foreign currency translation & other	28.8	(45.0)
Goodwill, end of period	$ 1,767.5	$ 1,555.3

Amount after accumulated impairment loss of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 350
-SubTopic 20
-Section 50
-Paragraph 1
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=35741047&loc=d3e13816-109267

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 350
-SubTopic 20
-Section 45
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=6388280&loc=d3e13770-109266

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 350
-SubTopic 20
-Section 45
-Paragraph 5
-URI http://asc.fasb.org/extlink&oid=64834752&loc=SL49117168-202975

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Amount of increase in asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized resulting from a business combination.

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Amount of foreign currency translation gain (loss) which increases (decreases) an asset representing future economic benefits from other assets acquired in a business combination that are not individually identified and separately recognized.

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A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period.

+ References

No definition available.

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