Derivative Instruments and Hedging Activities - Fair Value of Derivative Instruments on Gross Basis (Detail) (Designated as Hedging Instrument [Member], USD $) In Millions, unless otherwise specified	Jun. 30, 2014	Dec. 31, 2013
Derivatives, Fair Value [Line Items]
Derivative Assets	$ 68.0	$ 106.7
Derivative Liabilities	33.6	49.3
Foreign exchange forward contracts [Member] | Other current assets [Member]
Derivatives, Fair Value [Line Items]
Derivative Assets	36.9	60.2
Foreign exchange forward contracts [Member] | Other assets [Member]
Derivatives, Fair Value [Line Items]
Derivative Assets	9.9	30.2
Foreign exchange forward contracts [Member] | Other current liabilities [Member]
Derivatives, Fair Value [Line Items]
Derivative Liabilities	22.5	26.4
Foreign exchange forward contracts [Member] | Other long-term liabilities [Member]
Derivatives, Fair Value [Line Items]
Derivative Liabilities	11.1	15.9
Interest rate swaps [Member] | Other assets [Member]
Derivatives, Fair Value [Line Items]
Derivative Assets	21.2	16.3
Interest rate swaps [Member] | Other long-term liabilities [Member]
Derivatives, Fair Value [Line Items]
Derivative Liabilities		$ 7.0