Accumulated Other Comprehensive Income - Reclassification Adjustments from Accumulated Other Comprehensive Income (Detail) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2017	Mar. 31, 2016
Other Comprehensive Income Loss [Line Items]
Cost of products sold	$ 512.9	$ 640.6
Earnings before income taxes	265.2	154.8
Provision (benefit) for income taxes	(34.1)	46.1
Reclassification out of Accumulated Other Comprehensive Income [Member]
Other Comprehensive Income Loss [Line Items]
Net of tax	7.2	22.4
Reclassification out of Accumulated Other Comprehensive Income [Member] | Cash Flow Hedges [Member]
Other Comprehensive Income Loss [Line Items]
Earnings before income taxes	11.0	31.7
Provision (benefit) for income taxes	2.0	7.3
Net of tax	9.0	24.4
Reclassification out of Accumulated Other Comprehensive Income [Member] | Cash Flow Hedges [Member] | Foreign Exchange Forward Contracts [Member]
Other Comprehensive Income Loss [Line Items]
Cost of products sold	11.1	32.1
Reclassification out of Accumulated Other Comprehensive Income [Member] | Cash Flow Hedges [Member] | Forward Starting Interest Rate Swaps [Member]
Other Comprehensive Income Loss [Line Items]
Interest expense	(0.1)	(0.4)
Reclassification out of Accumulated Other Comprehensive Income [Member] | Defined Benefit Plan Items [Member]
Other Comprehensive Income Loss [Line Items]
Prior service cost	2.6	1.9
Unrecognized actuarial (loss)	(5.6)	(5.0)
Earnings before income taxes	(3.0)	(3.1)
Provision (benefit) for income taxes	(1.2)	(1.1)
Net of tax	$ (1.8)	$ (2.0)