Derivative Instruments and Hedging Activities - Effect of Fair Value and Cash flow Hedge Accounting on Condensed Consolidated Statements of Earnings (Detail) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017
Cash Flow Hedges [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Gain (loss) on cash flow hedging relationships	$ (5.0)	$ (5.2)	$ (26.9)	$ 11.6
Cost of Goods Sold [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Total amounts of income and expense line items presented in the statements of earnings in which the effects of fair value or cash flow hedges are recorded	529.0	500.9	1,688.5	1,541.5
Cost of Goods Sold [Member] | Foreign Exchange Forward Contracts [Member] | Cash Flow Hedges [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Gain (loss) on cash flow hedging relationships	(4.9)	(5.1)	(26.5)	12.0
Interest Expense [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Total amounts of income and expense line items presented in the statements of earnings in which the effects of fair value or cash flow hedges are recorded	(68.3)	(82.3)	(223.1)	(247.5)
Interest Expense [Member] | Discontinued Interest Rate Swaps [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Gain (loss) on fair value hedging relationships	2.1	2.1	6.3	6.2
Interest Expense [Member] | Forward Starting Interest Rate Swaps [Member] | Cash Flow Hedges [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Gain (loss) on cash flow hedging relationships	$ (0.1)	$ (0.1)	$ (0.4)	$ (0.4)