Goodwill and Identifiable Intangible Assets - Gross Carrying Value and Accumulated Amortization by Class of Identifiable Intangible Assets (Detail) - USD ($) $ in Millions	Mar. 31, 2020	Dec. 31, 2019
Intangible Assets [Line Items]
Gross Carrying Amounts, Indefinite-lived tradenames	$ 620.8	$ 635.6
Net Book Value, Indefinite-lived tradenames	620.8	635.6
Gross Carrying Amounts, Finite Lived	890.6	897.9
Accumulated Amortization, Finite Lived	(371.5)	(364.6)
Net Book Value, Finite Lived	519.1	533.3
Gross Carrying Amounts, Total identifiable intangibles	1,511.4	1,533.5
Accumulated Amortization, Total identifiable intangibles	(371.5)	(364.6)
Net Book Value, Total identifiable intangibles	1,139.9	1,168.9
Tradenames [Member]
Intangible Assets [Line Items]
Gross Carrying Amounts, Finite Lived	19.8	20.6
Accumulated Amortization, Finite Lived	(12.6)	(12.9)
Net Book Value, Finite Lived	7.2	7.7
Customer and contractual relationships [Member]
Intangible Assets [Line Items]
Gross Carrying Amounts, Finite Lived	796.0	803.9
Accumulated Amortization, Finite Lived	(304.6)	(299.6)
Net Book Value, Finite Lived	491.4	504.3
Patents/proprietary technology [Member]
Intangible Assets [Line Items]
Gross Carrying Amounts, Finite Lived	74.8	73.4
Accumulated Amortization, Finite Lived	(54.3)	(52.1)
Net Book Value, Finite Lived	$ 20.5	$ 21.3

Intangible Asset Accumulated Amortization

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- Definition

Intangible Assets [Line Items]

+ References

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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/disclosureRef
-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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- Definition

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

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 928
-SubTopic 340
-Section 50
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=6473545&loc=d3e61844-108004

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-Publisher FASB
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-Topic 350
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-Section 50
-Paragraph 2
-Subparagraph (a)(1)
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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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Carrying amount (original costs adjusted for previously recognized amortization and impairment) as of the balance sheet date for the rights acquired through registration of a trade name to gain or protect exclusive use thereof for a projected indefinite period of benefit.

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- Definition

Amount before accumulated amortization of intangible assets, excluding goodwill.

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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://fasb.org/us-gaap/role/ref/legacyRef
-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=66006027&loc=d3e16323-109275

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-Topic 350
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-Section 45
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-URI http://asc.fasb.org/extlink&oid=6388964&loc=d3e16212-109274

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