Other Intangible Assets - Schedule of Amortization Expense (Detail) (USD $) In Millions, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013
Finite-Lived Intangible Assets [Line Items]
Amortization expense	$ (3.9)	$ (2.4)	$ (12.7)	$ (6.6)
Product Rights [Member]
Finite-Lived Intangible Assets [Line Items]
Amortization expense			(2.8)	(0.3)
Brand Names [Member]
Finite-Lived Intangible Assets [Line Items]
Amortization expense			(0.4)	0
Technology [Member]
Finite-Lived Intangible Assets [Line Items]
Amortization expense			(1.7)	(1.5)
Customer Relationships [Member]
Finite-Lived Intangible Assets [Line Items]
Amortization expense			(3.5)	(2.7)
Patents [Member]
Finite-Lived Intangible Assets [Line Items]
Amortization expense			(0.2)	(0.3)
Internally Developed Software [Member]
Finite-Lived Intangible Assets [Line Items]
Amortization expense			(2.8)	0
Non-Compete Agreements [Member]
Finite-Lived Intangible Assets [Line Items]
Amortization expense			(0.6)	(0.6)
Marketing Related [Member]
Finite-Lived Intangible Assets [Line Items]
Amortization expense			$ (0.7)	$ (1.2)