Restructuring Activities - Components of Restructuring Accrual, Spending and Other Activity and Accrual Balance Remaining (Detail) (2011-2014 Integration and Optimization Program [Member], USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2012
2011-2014 Integration and Optimization Program [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring accrual at December 31, 2011	$ 23.7
Additional accrual and accrual adjustments	144.9
Cash payments during 2012	(81.4)
Effect of changes in foreign currency exchange rates	1.0
Restructuring accrual at December 31, 2012	$ 88.2