Goodwill and Other Intangible Assets - Components of Other Intangible Assets (Detail) - USD ($) $ in Millions	Sep. 30, 2016	Dec. 31, 2015
Schedule Of Other Intangible Assets [Line Items]
Gross Carrying Amount, amortizable intangible assets	$ 1,014.4	$ 1,108.5
Accumulated Amortization, amortizable intangible assets	(643.2)	(702.6)
Net Book Value, amortizable intangible assets	371.2	405.9
Gross Carrying Amount, total other intangible assets	1,046.5	1,140.6
Net Book Value, total other intangible assets	403.3	438.0
Trade Names (Indefinite-lived)
Schedule Of Other Intangible Assets [Line Items]
Net Book Value, indefinite-lived trade names	32.1	32.1
Customer Relationships
Schedule Of Other Intangible Assets [Line Items]
Gross Carrying Amount, amortizable intangible assets	935.2	932.1
Accumulated Amortization, amortizable intangible assets	(593.0)	(555.3)
Net Book Value, amortizable intangible assets	342.2	376.8
Patents
Schedule Of Other Intangible Assets [Line Items]
Gross Carrying Amount, amortizable intangible assets	2.0	98.3
Accumulated Amortization, amortizable intangible assets	(2.0)	(98.3)
Net Book Value, amortizable intangible assets	0.0	0.0
Trademarks, Licenses and Agreements
Schedule Of Other Intangible Assets [Line Items]
Gross Carrying Amount, amortizable intangible assets	29.4	30.6
Accumulated Amortization, amortizable intangible assets	(27.3)	(29.9)
Net Book Value, amortizable intangible assets	2.1	0.7
Trade Names (Indefinite-lived)
Schedule Of Other Intangible Assets [Line Items]
Gross Carrying Amount, amortizable intangible assets	47.8	47.5
Accumulated Amortization, amortizable intangible assets	(20.9)	(19.1)
Net Book Value, amortizable intangible assets	$ 26.9	$ 28.4