Activity in Goodwill by Segment (Detail) - USD ($) $ in Millions	12 Months Ended
Dec. 31, 2015	Dec. 31, 2014
Goodwill [Line Items]
Goodwill, Impaired, Accumulated Impairment Loss	$ (94.1)	$ (13.7)
Goodwill, beginning balance	2,735.3
Goodwill, period increase (decrease)	11.6
Goodwill, Impairment Loss	(80.4)
Goodwill, Translation Adjustments	(150.2)
Goodwill, ending balance	2,516.3
U.S.
Goodwill [Line Items]
Goodwill, beginning balance	1,295.8
Goodwill, period increase (decrease)	(2.4)
Goodwill, Impairment Loss	0.0
Goodwill, ending balance	1,293.4
International Lead Markets [Member]
Goodwill [Line Items]
Goodwill, beginning balance	777.3
Goodwill, period increase (decrease)	9.4
Goodwill, Impairment Loss	0.0
Goodwill, Translation Adjustments	(88.6)
Goodwill, ending balance	698.1
High-Growth Markets [Member]
Goodwill [Line Items]
Goodwill, beginning balance	352.2
Goodwill, period increase (decrease)	0.8
Goodwill, Impairment Loss	0.0
Goodwill, Translation Adjustments	(30.6)
Goodwill, ending balance	322.4
Foundational Markets and Corporate [Member]
Goodwill [Line Items]
Goodwill, beginning balance	310.0
Goodwill, period increase (decrease)	3.8
Goodwill, Impairment Loss	(80.4)
Goodwill, Translation Adjustments	(31.0)
Goodwill, ending balance	$ 202.4

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
-URI http://asc.fasb.org/extlink&oid=35741047&loc=d3e13816-109267

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