Accumulated Other Comprehensive Income - Reclassification Adjustments from Accumulated Other Comprehensive Income (Detail) (USD $) In Millions, unless otherwise specified	3 Months Ended
	Mar. 31, 2015	Mar. 31, 2014
Other Comprehensive Income Loss [Line Items]
Cost of products sold	$ 278.7	$ 303.7
Interest income	2.6	2.5
Provision for income taxes	55.0	64.8
Reclassification out of Accumulated Other Comprehensive Income [Member]
Other Comprehensive Income Loss [Line Items]
Net of tax	17.7	0.5
Reclassification out of Accumulated Other Comprehensive Income [Member] | Cash Flow Hedges [Member]
Other Comprehensive Income Loss [Line Items]
Total before tax	28.0	4.9
Provision for income taxes	6.4	2.9
Net of tax	21.6	2.0
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	28.1	5.0
Reclassification out of Accumulated Other Comprehensive Income [Member] | Cash Flow Hedges [Member] | Foreign Exchange Options [Member]
Other Comprehensive Income Loss [Line Items]
Cost of products sold		(0.1)
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 expenses	(0.1)
Reclassification out of Accumulated Other Comprehensive Income [Member] | Defined Benefit Plan Items [Member]
Other Comprehensive Income Loss [Line Items]
Prior service cost	1.1	1.0
Unrecognized actuarial (loss)	(4.3)	(2.9)
Total before tax	(3.2)	(1.9)
Provision for income taxes	0.7
Net of tax	(3.9)	(1.9)
Investments [Member] | Reclassification out of Accumulated Other Comprehensive Income [Member]
Other Comprehensive Income Loss [Line Items]
Interest income		0.4
Net of tax		$ 0.4