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Goodwill (Tables)

12 Months Ended

Dec. 31, 2017

Goodwill.

Schedule of changes in the carrying amount of goodwill

	(in millions)
Balance at January 1, 2015	$	1,736.4
Acquisitions		0.4
Purchase price allocation adjustments		(0.4)
Effect of foreign currency translation		(11.6)
Balance at December 31, 2015		1,724.8
Acquisitions		103.4
Disposal of businesses		(1.0)
Effect of foreign currency translation		0.2
Balance at December 31, 2016		1,827.4
Acquisitions		10.3
Effect of foreign currency translation		4.9
Balance at December 31, 2017	$	1,842.6

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- References

No definition available.

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- Definition

Tabular disclosure of goodwill by reportable segment and in total which includes a rollforward schedule.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 350
-SubTopic 20
-Section 50
-Paragraph 1
-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 50
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=35741047&loc=d3e13854-109267

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