Accumulated Other Comprehensive Income - Reclassification Adjustments from Accumulated Other Comprehensive Income (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Other Comprehensive Income Loss [Line Items]
Cost of products sold	$ 2,271.9	$ 2,132.9	$ 2,381.8
Type of Cost, Good or Service [Extensible List]	us-gaap:ProductMember	us-gaap:ProductMember	us-gaap:ProductMember
Other expense, net	$ (15.6)	$ (9.4)	$ (66.5)
Interest expense, net	(289.3)	(325.3)	(355.0)
(Loss) earnings before income taxes	(271.1)	464.6	399.6
Provision (benefit) for income taxes	108.2	(1,348.8)	95.0
Reclassification out of Accumulated Other Comprehensive Income [Member]
Other Comprehensive Income Loss [Line Items]
Net of tax	(35.6)	(3.5)	15.9
Reclassification out of Accumulated Other Comprehensive Income [Member] | Cash Flow Hedges [Member]
Other Comprehensive Income Loss [Line Items]
(Loss) earnings before income taxes	(26.8)	4.6	19.6
Provision (benefit) for income taxes	(3.2)	0.8	(6.2)
Net of tax	(23.6)	3.8	25.8
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	$ (26.2)	$ 5.1	$ 87.7
Type of Cost, Good or Service [Extensible List]	us-gaap:ProductMember	us-gaap:ProductMember	us-gaap:ProductMember
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, net			$ (66.4)
Interest expense, net	$ (0.6)	$ (0.5)	(1.7)
Reclassification out of Accumulated Other Comprehensive Income [Member] | Defined Benefit Plan Items [Member]
Other Comprehensive Income Loss [Line Items]
(Loss) earnings before income taxes	(16.3)	(11.8)	(15.1)
Provision (benefit) for income taxes	(4.3)	(4.5)	(5.2)
Net of tax	(12.0)	(7.3)	(9.9)
Reclassification out of Accumulated Other Comprehensive Income [Member] | Defined Benefit Plan Items [Member] | Prior Service Cost [Member]
Other Comprehensive Income Loss [Line Items]
Other expense, net	9.9	10.3	7.8
Reclassification out of Accumulated Other Comprehensive Income [Member] | Defined Benefit Plan Items [Member] | Unrecognized Actuarial (Loss) [Member]
Other Comprehensive Income Loss [Line Items]
Other expense, net	$ (26.2)	$ (22.1)	$ (22.9)