Derivatives - Schedule of Pretax Effects of Derivative Financial Instruments Designated or Previously Designated as Effective Hedges (Detail) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016
Derivative Instruments, Gain (Loss) [Line Items]
Gain/(Loss) Recognized in OCI (effective portion)	$ (24.2)	$ (105.7)	$ (8.8)	$ (2.5)
Gain/(Loss) Reclassified from AOCI to Income	3.1	(26.6)	3.4	(16.3)
Interest Rate Swaps [Member] | Interest Expense, Net [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Gain/(Loss) Recognized in OCI (effective portion)		(88.1)
Gain/(Loss) Reclassified from AOCI to Income	(4.1)	(2.6)	(2.1)	(2.4)
Foreign Currency Contracts [Member] | Sales and Cost of Sales [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Gain/(Loss) Recognized in OCI (effective portion)	(23.0)	8.0	(11.2)	13.0
Gain/(Loss) Reclassified from AOCI to Income	12.8	0.5	4.2	(1.2)
Cross-currency Swaps [Member] | Other Income (Expense), Net [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Gain/(Loss) Recognized in OCI (effective portion)	(1.2)	(25.6)	2.4	(15.5)
Gain/(Loss) Reclassified from AOCI to Income	$ (5.6)	$ (24.5)	$ 1.3	$ (12.7)