Accumulated Other Comprehensive (Loss) Income - Reclassification Adjustments from Other Comprehensive Income (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Other Comprehensive Income Loss [Line Items]
Interest income	$ 2.9	$ 9.4	$ 11.9
Cost of products sold	2,381.8	1,800.6	1,242.8
Earnings before income taxes	399.6	153.2	939.4
Provision for income taxes	95.0	7.0	220.2
Reclassification out of Accumulated Other Comprehensive Income [Member]
Other Comprehensive Income Loss [Line Items]
Net of tax	15.9	83.8	15.1
Reclassification out of Accumulated Other Comprehensive Income [Member] | Investments [Member]
Other Comprehensive Income Loss [Line Items]
Interest income			0.4
Earnings before income taxes			0.4
Net of tax			0.4
Reclassification out of Accumulated Other Comprehensive Income [Member] | Cash Flow Hedges [Member]
Other Comprehensive Income Loss [Line Items]
Earnings before income taxes	19.6	121.0	33.3
Provision for income taxes	(6.2)	28.0	14.4
Net of tax	25.8	93.0	18.9
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	87.7	122.3	33.3
Reclassification out of Accumulated Other Comprehensive Income [Member] | Cash Flow Hedges [Member] | Forward Starting Interest Rate Swaps [Member]
Other Comprehensive Income Loss [Line Items]
Other expense	(66.4)
Interest expenses	(1.7)	(1.3)
Reclassification out of Accumulated Other Comprehensive Income [Member] | Defined Benefit Plan Items [Member]
Other Comprehensive Income Loss [Line Items]
Prior service cost	7.8	5.6	3.9
Unrecognized actuarial (loss)	(22.9)	(20.1)	(11.1)
Earnings before income taxes	(15.1)	(14.5)	(7.2)
Provision for income taxes	(5.2)	(5.3)	(3.0)
Net of tax	$ (9.9)	$ (9.2)	$ (4.2)