Goodwill and Other Intangible Assets - Components of Other Intangible Assets (Detail) - USD ($) $ in Millions	Sep. 30, 2015	Dec. 31, 2014
Schedule Of Other Intangible Assets [Line Items]
Gross Carrying Amount, amortizable intangible assets	$ 1,124.2	$ 1,038.5
Accumulated Amortization, amortizable intangible assets	(690.6)	(641.6)
Net Book Value, amortizable intangible assets	433.6	396.9
Gross Carrying Amount, total other intangible assets	1,156.3	1,065.3
Net Book Value, total other intangible assets	465.7	423.7
Trade Names
Schedule Of Other Intangible Assets [Line Items]
Net Book Value, indefinite-lived trade names	32.1	26.8
Customer Relationships
Schedule Of Other Intangible Assets [Line Items]
Gross Carrying Amount, amortizable intangible assets	946.8	865.6
Accumulated Amortization, amortizable intangible assets	(543.7)	(498.0)
Net Book Value, amortizable intangible assets	403.1	367.6
Patents
Schedule Of Other Intangible Assets [Line Items]
Gross Carrying Amount, amortizable intangible assets	98.3	98.3
Accumulated Amortization, amortizable intangible assets	(98.3)	(98.3)
Trademarks, Licenses and Agreements
Schedule Of Other Intangible Assets [Line Items]
Gross Carrying Amount, amortizable intangible assets	31.5	31.5
Accumulated Amortization, amortizable intangible assets	(30.4)	(29.7)
Net Book Value, amortizable intangible assets	1.1	1.8
Trade Names
Schedule Of Other Intangible Assets [Line Items]
Gross Carrying Amount, amortizable intangible assets	47.6	43.1
Accumulated Amortization, amortizable intangible assets	(18.2)	(15.6)
Net Book Value, amortizable intangible assets	$ 29.4	$ 27.5