Goodwill and Other Identifiable Intangible Assets - Identifiable Intangible Assets (Detail) - USD ($) $ in Millions	Dec. 31, 2015	Dec. 31, 2014
Acquired Intangible Assets by Major Class [Line Items]
Finite-life intangibles, cost	$ 2,329.8	$ 1,505.5
Accumulated amortization	(531.2)	(423.0)
Finite-life intangibles, net	1,798.6	1,082.5
Indefinite-life intangibles	691.5	525.6
Total intangibles, cost	3,021.3	2,031.1
Total intangibles, net	2,490.1	1,608.1
Customer relationships
Acquired Intangible Assets by Major Class [Line Items]
Finite-life intangibles, cost	2,078.7	1,247.8
Accumulated amortization	(415.8)	(325.2)
Finite-life intangibles, net	1,662.9	922.6
Trade names
Acquired Intangible Assets by Major Class [Line Items]
Finite-life intangibles, cost	1.8	2.0
Accumulated amortization	(1.2)	(1.1)
Finite-life intangibles, net	0.6	0.9
Proprietary technology and patents
Acquired Intangible Assets by Major Class [Line Items]
Finite-life intangibles, cost	249.3	255.7
Accumulated amortization	(114.2)	(96.7)
Finite-life intangibles, net	$ 135.1	$ 159.0

Acquired Intangible Assets by Major Class [Line Items]

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- Definition

Accumulated amount of amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 350
-SubTopic 30
-Section 50
-Paragraph 2
-Subparagraph (a)(1)
-URI http://asc.fasb.org/extlink&oid=26713463&loc=d3e16323-109275

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- Definition

Amount before amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life.

+ References

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Amount after amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life.

+ References

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Amount of assets, excluding financial assets and goodwill, lacking physical substance and having a projected indefinite period of benefit.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 350
-SubTopic 30
-Section 50
-Paragraph 2
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=26713463&loc=d3e16323-109275

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- Definition

Amount before accumulated amortization of intangible assets, excluding goodwill.

+ References

No definition available.

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- Definition

Sum of the carrying amounts of all intangible assets, excluding goodwill, as of the balance sheet date, net of accumulated amortization and impairment charges.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 350
-SubTopic 30
-Section 45
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=6388964&loc=d3e16212-109274

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 350
-SubTopic 30
-Section 50
-Paragraph 2
-Subparagraph ((a)(1),(b))
-URI http://asc.fasb.org/extlink&oid=26713463&loc=d3e16323-109275

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