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Goodwill and Other Intangible Assets, Net - Other Intangible Assets (Detail) (USD $)
In Millions, unless otherwise specified
Dec. 31, 2012
Dec. 31, 2011
Finite-Lived Intangible Assets [Line Items]    
Indefinite-lived intangible assets, Gross/Net Carrying Amount $ 27.4 $ 15.8
Other Intangible Assets 159.6 102.7
Accumulated Amortization 36.3 26.1
Indefinite-lived intangible assets, gross/net carrying amount 27.4 15.8
Other intangible assets, net 123.3 76.6
Customer relationships [Member]
    
Finite-Lived Intangible Assets [Line Items]    
Finite-lived intangible assets, Gross Carrying Amount 84.7 69.4
Accumulated Amortization (25.1) (19.8)
Finite-live intangible asset net of Accumulated Amortization 59.6 49.6
Proprietary technology [Member]
    
Finite-Lived Intangible Assets [Line Items]    
Finite-lived intangible assets, Gross Carrying Amount 29.5 12.1
Accumulated Amortization (4.9) (3.9)
Finite-live intangible asset net of Accumulated Amortization 24.6 8.2
Patents and other [Member]
    
Finite-Lived Intangible Assets [Line Items]    
Finite-lived intangible assets, Gross Carrying Amount 18.0 5.4
Accumulated Amortization (6.3) (2.4)
Finite-live intangible asset net of Accumulated Amortization $ 11.7 $ 3.0