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Goodwill and Identifiable Intangible Assets - Gross Carrying Value and Accumulated Amortization by Class of Identifiable Intangible Assets (Detail) - USD ($)
$ in Millions
Sep. 30, 2015
Dec. 31, 2014
Intangible Assets [Line Items]    
Gross Carrying Amounts, Total identifiable intangibles $ 1,246.7 $ 909.2
Accumulated Amortization, Total identifiable intangibles (264.5) (252.7)
Net Book Value, Total identifiable intangibles 982.2 656.5
Gross Carrying Amounts, Indefinite-lived tradenames 659.3 542.7
Accumulated Amortization, Indefinite-lived tradenames [1] (42.0) (42.0)
Net Book Value, Indefinite-lived tradenames 617.3 500.7
Gross Carrying Amounts, Finite Lived 587.4 366.5
Accumulated Amortization, Finite Lived (222.5) (210.7)
Net Book Value, Finite Lived 364.9 155.8
Tradenames [Member]    
Intangible Assets [Line Items]    
Gross Carrying Amounts, Finite Lived 16.4 14.6
Accumulated Amortization, Finite Lived (6.7) (6.4)
Net Book Value, Finite Lived 9.7 8.2
Customer and contractual relationships [Member]    
Intangible Assets [Line Items]    
Gross Carrying Amounts, Finite Lived 513.0 294.2
Accumulated Amortization, Finite Lived (173.5) (164.0)
Net Book Value, Finite Lived 339.5 130.2
Patents/proprietary technology [Member]    
Intangible Assets [Line Items]    
Gross Carrying Amounts, Finite Lived 58.0 57.7
Accumulated Amortization, Finite Lived (42.3) (40.3)
Net Book Value, Finite Lived $ 15.7 $ 17.4
[1] Accumulated amortization prior to the adoption of revised ASC requirements for Intangibles - Goodwill and Other Assets.