Derivative Instruments and Hedging Activities - Gains/(Losses) from Derivative Instruments Recognized in Cost of Products Sold (Detail) (Nondesignated [Member], Foreign Exchange Forward Contracts [Member], Cost of Products Sold [Member], USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2012
Nondesignated [Member] | Foreign Exchange Forward Contracts [Member] | Cost of Products Sold [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Gains (losses) from derivative instruments not designated as hedging instruments	$ 15.3	$ (2.0)