Details and Activity Related to Accrued Reorganization Costs (Detail) (USD $) In Millions, unless otherwise specified	6 Months Ended
	Jun. 30, 2012
Restructuring Cost and Reserve [Line Items]
Accrual Balance at December 31, 2011	$ 17.2
Reorganization Costs, net
Payments	(7.8)
Accrual Balance at June 30, 2012	9.4
Severance And Other Employee-Related
Restructuring Cost and Reserve [Line Items]
Accrual Balance at December 31, 2011	7.3
Reorganization Costs, net
Payments	(5.8)
Foreign Currency and Other	0.3
Accrual Balance at June 30, 2012	1.8
Other Costs
Restructuring Cost and Reserve [Line Items]
Accrual Balance at December 31, 2011	9.9
Reorganization Costs, net
Payments	(2.0)
Foreign Currency and Other	(0.3)
Accrual Balance at June 30, 2012	$ 7.6