Schedule Of Quarterly Financial Information (Parenthetical) (Detail) (USD $) In Millions, except Per Share data, unless otherwise specified	3 Months Ended												12 Months Ended
	Dec. 31, 2012	Sep. 30, 2012	Jun. 30, 2012	Mar. 31, 2012	Dec. 31, 2011	Sep. 30, 2011	Jun. 30, 2011	Mar. 31, 2011	Dec. 31, 2010	Sep. 30, 2010	Jun. 30, 2010	Mar. 31, 2010	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010	Jan. 31, 2010
Schedule Of Quarterly Financial Information [Line Items]
Net Sales	$ 809.7	$ 725.2	$ 696.4	$ 690.6	$ 731.1	$ 701.0	$ 674.9	$ 642.3	$ 656.9	$ 656.9	$ 640.9	$ 634.5	$ 2,921.9	$ 2,749.3	$ 2,589.2
Deferred tax valuation charge					13
Deferred tax valuation charge, per share					$ 0.09
Impact on net sales due to change in calendar periods					14.3									14.3		(1.0)
U.S.
Schedule Of Quarterly Financial Information [Line Items]
Charge to earnings in pre-tax pension plan obligations									24
Charge to earnings in after tax pension plan settlement									15.5
Avid Health, Inc
Schedule Of Quarterly Financial Information [Line Items]
Net Sales													2,921.9	2,749.3
Avid Health, Inc | Business Acquisitions
Schedule Of Quarterly Financial Information [Line Items]
Net Sales	$ 70.0												$ 70.0