Derivative Instruments and Hedging Activities - Gross Unrealized Losses from Derivative Instruments (Detail) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Derivative Instruments, Gain (Loss) [Line Items]
Amount of Gain / (Loss) Recognized in AOCI	$ 65.7	$ 16.7
Cash Flow Hedges [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Amount of Gain / (Loss) Recognized in AOCI	65.7	16.7
Amount of Gain / (Loss) Reclassified from AOCI	15.4	9.9
Cash Flow Hedges [Member] | Foreign Exchange Forward Contracts [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Amount of Gain / (Loss) Recognized in AOCI	65.7	16.7
Cash Flow Hedges [Member] | Foreign Exchange Forward Contracts [Member] | Cost of Products Sold [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Amount of Gain / (Loss) Reclassified from AOCI	15.6	7.2
Cash Flow Hedges [Member] | Interest Rate Swaps [Member] | Interest Expense [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Amount of Gain / (Loss) Reclassified from AOCI		2.8
Cash Flow Hedges [Member] | Forward Starting Interest Rate Swaps [Member] | Interest Expense [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Amount of Gain / (Loss) Reclassified from AOCI	$ (0.2)	$ (0.1)