Goodwill and Other Intangible Assets - Components of Other Intangible Assets (Detail) - USD ($) $ in Millions	Dec. 31, 2016	Dec. 31, 2015
Schedule Of Other Intangible Assets [Line Items]
Gross Carrying Amount, total other intangible assets	$ 582.9	$ 745.0
Accumulated Amortization, total other intangible assets	(411.0)	(524.0)
Net Book Value, total other intangible assets	171.9	221.0
Customer Relationships
Schedule Of Other Intangible Assets [Line Items]
Gross Carrying Amount, total other intangible assets	517.9	586.5
Accumulated Amortization, total other intangible assets	(370.7)	(389.9)
Net Book Value, total other intangible assets	147.2	196.6
Patents
Schedule Of Other Intangible Assets [Line Items]
Gross Carrying Amount, total other intangible assets	2.0	98.3
Accumulated Amortization, total other intangible assets	(2.0)	(98.3)
Trademarks, Licenses and Agreements
Schedule Of Other Intangible Assets [Line Items]
Gross Carrying Amount, total other intangible assets	26.2	24.5
Accumulated Amortization, total other intangible assets	(24.4)	(23.8)
Net Book Value, total other intangible assets	1.8	0.7
Trade Names
Schedule Of Other Intangible Assets [Line Items]
Gross Carrying Amount, total other intangible assets	36.8	35.7
Accumulated Amortization, total other intangible assets	(13.9)	(12.0)
Net Book Value, total other intangible assets	$ 22.9	$ 23.7