Derivatives and Hedging Activities - Fair Value of Derivative Instruments (Detail) - USD ($) $ in Millions	Dec. 31, 2016	Dec. 31, 2015
Derivatives Fair Value [Line Items]
Foreign currency forward contracts	$ 40.2	$ 72.2
Total Derivative Liabilities	(16.9)	(56.8)
Net Derivatives	23.3	15.4
Not Designated as Hedging Instruments [Member]
Derivatives Fair Value [Line Items]
Foreign currency forward contracts	11.4	25.0
Total Derivative Liabilities	(11.5)	(43.5)
Net Derivatives	(0.1)	(18.5)
Foreign Currency Forward Contracts [Member]
Derivatives Fair Value [Line Items]
Foreign currency forward contracts	16.3	28.2
Total Derivative Liabilities	(11.6)	(44.8)
Foreign Currency Forward Contracts [Member] \| Not Designated as Hedging Instruments [Member]
Derivatives Fair Value [Line Items]
Foreign currency forward contracts	11.4	25.0
Total Derivative Liabilities	(11.5)	(43.5)
Interest Rate and Currency Swap [Member]
Derivatives Fair Value [Line Items]
Foreign currency forward contracts	23.9	44.0
Cross-Currency Swaps [Member]
Derivatives Fair Value [Line Items]
Total Derivative Liabilities	(5.3)	(12.0)
Cash Flow Hedge [Member]
Derivatives Fair Value [Line Items]
Foreign currency forward contracts	28.8	47.2
Total Derivative Liabilities	(0.1)	(1.3)
Net Derivatives	28.7	45.9
Cash Flow Hedge [Member] \| Foreign Currency Forward Contracts [Member]
Derivatives Fair Value [Line Items]
Foreign currency forward contracts	4.9	3.2
Total Derivative Liabilities	(0.1)	(1.3)
Cash Flow Hedge [Member] \| Interest Rate and Currency Swap [Member]
Derivatives Fair Value [Line Items]
Foreign currency forward contracts	23.9	44.0
Net Investment Hedge [Member]
Derivatives Fair Value [Line Items]
Total Derivative Liabilities	(5.3)	(12.0)
Net Derivatives	(5.3)	(12.0)
Net Investment Hedge [Member] \| Cross-Currency Swaps [Member]
Derivatives Fair Value [Line Items]
Total Derivative Liabilities	$ (5.3)	$ (12.0)

Fair values as of the balance sheet date of the net amount of all assets and liabilities resulting from contracts that meet the criteria of being accounted for as derivative instruments.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
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