Accumulated Other Comprehensive Income - Reclassification Adjustments from Accumulated Other Comprehensive Income (Detail) (USD $) In Millions, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2013	Jun. 30, 2012	Jun. 30, 2013	Jun. 30, 2012
Other Comprehensive Income Loss [Line Items]
Total reclassifications, net of tax	$ 0.1	$ (2.9)	$ (8.0)	$ (5.8)
Defined benefit plans [Member]
Other Comprehensive Income Loss [Line Items]
Amount of Gain/(Loss) Reclassified from OCI, before tax	(3.7)	(2.1)	(7.4)	(5.3)
Provision for income taxes	(1.4)	(0.5)	(0.9)	(1.7)
Total reclassifications, net of tax	(2.3)	(1.6)	(6.5)	(3.6)
Defined benefit plans [Member] | Prior service cost [Member]
Other Comprehensive Income Loss [Line Items]
Amount of Gain/(Loss) Reclassified from OCI, before tax	0.9	1.2	1.9	1.4
Defined benefit plans [Member] | Unrecognized actuarial loss [Member]
Other Comprehensive Income Loss [Line Items]
Amount of Gain/(Loss) Reclassified from OCI, before tax	(4.6)	(3.3)	(9.3)	(6.7)
Cash flow hedges [Member]
Other Comprehensive Income Loss [Line Items]
Amount of Gain/(Loss) Reclassified from OCI, before tax	3.6	(3.8)	(1.9)	(7.7)
Provision for income taxes	1.2	(2.5)	(0.4)	(5.5)
Total reclassifications, net of tax	2.4	(1.3)	(1.5)	(2.2)
Cash flow hedges [Member] | Cost of products sold [Member] | Foreign exchange forward contracts [Member]
Other Comprehensive Income Loss [Line Items]
Amount of Gain/(Loss) Reclassified from OCI, before tax	3.7	(3.7)	(1.7)	(7.8)
Cash flow hedges [Member] | Cost of products sold [Member] | Foreign exchange options [Member]
Other Comprehensive Income Loss [Line Items]
Amount of Gain/(Loss) Reclassified from OCI, before tax	(0.1)	(0.1)	(0.2)	(0.1)
Cash flow hedges [Member] | Interest expense [Member] | Cross-currency interest rate swaps [Member]
Other Comprehensive Income Loss [Line Items]
Amount of Gain/(Loss) Reclassified from OCI, before tax				$ 0.2