Goodwill and Identifiable Intangible Assets - Gross Carrying Value and Accumulated Amortization by Class of Identifiable Intangible Assets (Detail) - USD ($) $ in Millions	Dec. 31, 2016	Dec. 31, 2015
Intangible Assets [Line Items]
Gross Carrying Amounts, Total identifiable intangibles	$ 1,361.4	$ 1,223.6
Accumulated Amortization, Total identifiable intangibles	(254.4)	(226.9)
Net Book Value, Total identifiable intangibles	1,107.0	996.7
Gross Carrying Amounts, Indefinite-lived tradenames	671.8	638.6
Accumulated Amortization, Indefinite-lived tradenames	0.0	0.0
Net Book Value, Indefinite-lived tradenames	671.8	638.6
Gross Carrying Amounts, Finite Lived	689.6	585.0
Accumulated Amortization, Finite Lived	(254.4)	(226.9)
Net Book Value, Finite Lived	435.2	358.1
Tradenames [Member]
Intangible Assets [Line Items]
Gross Carrying Amounts, Finite Lived	15.8	19.1
Accumulated Amortization, Finite Lived	(7.3)	(8.6)
Net Book Value, Finite Lived	8.5	10.5
Customer and contractual relationships [Member]
Intangible Assets [Line Items]
Gross Carrying Amounts, Finite Lived	611.9	511.2
Accumulated Amortization, Finite Lived	(203.1)	(177.4)
Net Book Value, Finite Lived	408.8	333.8
Patents/proprietary technology [Member]
Intangible Assets [Line Items]
Gross Carrying Amounts, Finite Lived	61.9	54.7
Accumulated Amortization, Finite Lived	(44.0)	(40.9)
Net Book Value, Finite Lived	$ 17.9	$ 13.8

Indefinite Lived Intangible Assets Accumulated Amortization

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Indefinite Lived Intangible Assets Gross

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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=66006027&loc=d3e16323-109275

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

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

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

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 350
-SubTopic 30
-Section 50
-Paragraph 2
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=66006027&loc=d3e16323-109275

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Amount before accumulated amortization of intangible assets, excluding goodwill.

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

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-Publisher FASB
-Name Accounting Standards Codification
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-URI http://asc.fasb.org/extlink&oid=6388964&loc=d3e16212-109274

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