Accumulated Other Comprehensive Income - Reclassification Adjustments from Accumulated Other Comprehensive Income (Detail) - USD ($) $ in Millions	3 Months Ended			6 Months Ended
	Jun. 30, 2016	Mar. 31, 2016	Jun. 30, 2015	Jun. 30, 2016	Jun. 30, 2015
Other Comprehensive Income Loss [Line Items]
Cost of products sold	$ 640.1		$ 294.3	$ 1,280.7	$ 579.2
Earnings (loss) before income taxes	110.5		(238.6)	265.3	(11.8)
Provision (benefit) for income taxes	142.2	$ 46.1	(64.8)	188.3	(9.1)
Reclassification out of Accumulated Other Comprehensive Income [Member]
Other Comprehensive Income Loss [Line Items]
Net of tax	17.9		23.6	40.3	41.3
Reclassification out of Accumulated Other Comprehensive Income [Member] | Cash Flow Hedges [Member]
Other Comprehensive Income Loss [Line Items]
Earnings (loss) before income taxes	25.8		32.7	57.5	60.7
Provision (benefit) for income taxes	6.1		7.6	13.4	14.0
Net of tax	19.7		25.1	44.1	46.7
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	26.3		33.1	58.4	61.2
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	(0.5)		(0.4)	(0.9)	(0.5)
Reclassification out of Accumulated Other Comprehensive Income [Member] | Defined Benefit Plan Items [Member]
Other Comprehensive Income Loss [Line Items]
Prior service cost	2.0		1.2	3.9	2.3
Unrecognized actuarial (loss)	(5.0)		(4.2)	(10.0)	(8.5)
Earnings (loss) before income taxes	(3.0)		(3.0)	(6.1)	(6.2)
Provision (benefit) for income taxes	(1.2)		(1.5)	(2.3)	(0.8)
Net of tax	$ (1.8)		$ (1.5)	$ (3.8)	$ (5.4)