Details and Activity Related to Accrued Reorganization Costs (Detail) (USD $) In Millions, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2012	Sep. 30, 2011	Sep. 30, 2012	Sep. 30, 2011
Restructuring Cost and Reserve [Line Items]
Accrual Balance at December 31, 2011			$ 17.2
Reorganization costs, net	9.3	6.2	9.3	6.2
Payments			(12.2)
Foreign Currency and Other
Accrual Balance at September 30, 2012	14.3		14.3
Severance and Other Employee-Related
Restructuring Cost and Reserve [Line Items]
Accrual Balance at December 31, 2011			7.3
Payments			(6.5)
Foreign Currency and Other
Accrual Balance at September 30, 2012	0.8		0.8
Other Costs
Restructuring Cost and Reserve [Line Items]
Accrual Balance at December 31, 2011			9.9
Reorganization costs, net			9.3
Payments			(5.7)
Foreign Currency and Other
Accrual Balance at September 30, 2012	$ 13.5		$ 13.5