Accumulated Other Comprehensive Income - Reclassification Adjustments from Accumulated Other Comprehensive Income (Detail) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Other Comprehensive Income Loss [Line Items]
Cost of products sold	$ 1,249.8	$ 1,286.1	$ 1,125.2
Interest income	11.9	15.6	15.6
Provision for income taxes	224.9	221.9	237.2
Reclassification out of Accumulated Other Comprehensive Income [Member]
Other Comprehensive Income Loss [Line Items]
Net of tax	15.1	(3.5)	(9.8)
Reclassification out of Accumulated Other Comprehensive Income [Member] | Cash Flow Hedges [Member]
Other Comprehensive Income Loss [Line Items]
Total before tax	33.3	7.8	(12.2)
Provision for income taxes	14.4	3.4	(8.9)
Net of tax	18.9	4.4	(3.3)
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	33.3	8.0	(12.0)
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		(0.2)	(0.4)
Reclassification out of Accumulated Other Comprehensive Income [Member] | Cash Flow Hedges [Member] | Cross-currency Interest Rate Swaps [Member]
Other Comprehensive Income Loss [Line Items]
Interest Expenses			0.2
Reclassification out of Accumulated Other Comprehensive Income [Member] | Defined Benefit Plan Items [Member]
Other Comprehensive Income Loss [Line Items]
Prior service cost	3.9	3.9	2.9
Unrecognized actuarial (loss)	(11.1)	(16.6)	(13.3)
Total before tax	(7.2)	(12.7)	(10.4)
Provision for income taxes	(3.0)	(4.8)	(3.9)
Net of tax	(4.2)	(7.9)	(6.5)
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