Goodwill and Identifiable Intangible Assets - Gross Carrying Value and Accumulated Amortization by Class of Identifiable Intangible Assets (Detail) - USD ($) $ in Millions	Jun. 30, 2016	Dec. 31, 2015
Intangible Assets [Line Items]
Gross Carrying Amounts, Total identifiable intangibles	$ 1,282.1	$ 1,223.6
Accumulated Amortization, Total identifiable intangibles	(242.8)	(226.9)
Net Book Value, Total identifiable intangibles	1,039.3	996.7
Gross Carrying Amounts, Indefinite-lived tradenames	663.1	638.6
Accumulated Amortization, Indefinite-lived tradenames	0.0	0.0
Net Book Value, Indefinite-lived tradenames	663.1	638.6
Gross Carrying Amounts, Finite Lived	619.0	585.0
Accumulated Amortization, Finite Lived	(242.8)	(226.9)
Net Book Value, Finite Lived	376.2	358.1
Tradenames
Intangible Assets [Line Items]
Gross Carrying Amounts, Finite Lived	18.0	19.1
Accumulated Amortization, Finite Lived	(8.8)	(8.6)
Net Book Value, Finite Lived	9.2	10.5
Customer and contractual relationships [Member]
Intangible Assets [Line Items]
Gross Carrying Amounts, Finite Lived	542.0	511.2
Accumulated Amortization, Finite Lived	(189.7)	(177.4)
Net Book Value, Finite Lived	352.3	333.8
Patents/proprietary technology [Member]
Intangible Assets [Line Items]
Gross Carrying Amounts, Finite Lived	59.0	54.7
Accumulated Amortization, Finite Lived	(44.3)	(40.9)
Net Book Value, Finite Lived	$ 14.7	$ 13.8