Goodwill and Identifiable Intangible Assets - Gross Carrying Value and Accumulated Amortization by Class of Intangible Assets (Detail) (USD $) In Millions, unless otherwise specified	Dec. 31, 2014		Dec. 31, 2013
Intangible Assets [Line Items]
Gross Carrying Amounts, Total identifiable intangibles	$ 909.2		$ 870.6
Accumulated Amortization, Total identifiable intangibles	(252.7)		(241.7)
Net Book Value, Total identifiable intangibles	656.5		628.9
Gross Carrying Amounts, Indefinite-lived tradenames	542.7		538.8
Accumulated Amortization, Indefinite-lived tradenames	(42.0)	[1]	(42.0)	[1]
Net Book Value, Indefinite-lived tradenames	500.7		496.8
Gross Carrying Amounts, Finite Lived	366.5		331.8
Accumulated Amortization, Finite Lived	(210.7)		(199.7)
Net Book Value, Finite Lived	155.8		132.1
Tradenames
Intangible Assets [Line Items]
Gross Carrying Amounts, Finite Lived	14.6		15.2
Accumulated Amortization, Finite Lived	(6.4)		(6.0)
Net Book Value, Finite Lived	8.2		9.2
Customer and contractual relationships
Intangible Assets [Line Items]
Gross Carrying Amounts, Finite Lived	294.2		260.2
Accumulated Amortization, Finite Lived	(164.0)		(156.5)
Net Book Value, Finite Lived	130.2		103.7
Patents/proprietary technology
Intangible Assets [Line Items]
Gross Carrying Amounts, Finite Lived	57.7		56.4
Accumulated Amortization, Finite Lived	(40.3)		(37.2)
Net Book Value, Finite Lived	$ 17.4		$ 19.2

[1] Accumulated amortization prior to the adoption of revised ASC requirements for Intangibles - Goodwill and Other Assets.