Restructuring Charges - Restructuring Activity (Detail) (USD $) In Millions, unless otherwise specified	12 Months Ended			3 Months Ended	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010	Sep. 30, 2012 2012 Restructuring Program [Member]	Dec. 31, 2012 2012 Restructuring Program [Member]	Dec. 31, 2010 Employee Severance [Member]	Dec. 31, 2012 Employee Severance [Member] 2012 Restructuring Program [Member]	Dec. 31, 2011 Employee Severance [Member] Two Thousand And Nine Restructuring Plan [Member]	Dec. 31, 2010 Employee Severance [Member] Two Thousand And Nine Restructuring Plan [Member]	Dec. 31, 2010 Employee Severance [Member] Fiscal Two Thousand Eight Restructuring Plan [Member]	Dec. 31, 2012 Other Restructuring Costs [Member] 2012 Restructuring Program [Member]	Dec. 31, 2012 Lease And Exit Costs [Member]	Dec. 31, 2011 Lease And Exit Costs [Member]	Dec. 31, 2010 Lease And Exit Costs [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring Cost, Beginning Balance	$ 1.0	$ 2.6	$ 10.2			$ 7.9		$ 1.0	$ 7.6	$ 0.3		$ 1.0	$ 1.6	$ 2.3
Restructuring charges	20.7		(0.3)	24.1	24.1	(0.2)	18.4		(0.2)		2.3			(0.1)
Foreign currency translation	0.4						0.4
Cash paid for restructuring charges during the period	(3.6)	(1.6)	(7.3)		(3.8)	(6.7)	(2.3)	(1.0)	(6.4)	(0.3)	(0.6)	(0.7)	(0.6)	(0.6)
Non Utilized, Net	0.7						1.5				(0.8)
Restructuring Cost, Ending Balance	$ 19.2	$ 1.0	$ 2.6			$ 1.0	$ 18.0		$ 1.0		$ 0.9	$ 0.3	$ 1.0	$ 1.6