Derivatives - Schedule of Pretax Effects of Derivative Financial Instruments Designated or Previously Designated as Effective Hedges (Detail) - USD ($) $ in Millions		3 Months Ended
		Mar. 31, 2019	Mar. 31, 2018
Derivative Instruments, Gain (Loss) [Line Items]
Gain/(Loss) Recognized in OCI (effective portion)	[1]	$ (6.7)	$ (8.7)
Gain/(Loss) Reclassified from AOCL to Income		4.2	(13.1)
Interest Rate Swaps [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Gain/(Loss) Reclassified from AOCL to Income		(1.5)	(1.9)
Foreign Currency Contracts [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Gain/(Loss) Recognized in OCI (effective portion)	[1]	(6.1)	(5.3)
Gain/(Loss) Reclassified from AOCL to Income		5.7	(6.4)
Commodity contracts [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Gain/(Loss) Recognized in OCI (effective portion)	[1]	$ (0.6)
Cross-currency Swaps [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Gain/(Loss) Recognized in OCI (effective portion)	[1]		(3.4)
Gain/(Loss) Reclassified from AOCL to Income			$ (4.8)

[1] Represents effective portion recognized in Other Comprehensive Income (Loss) (“OCI”).