Accrued Reorganization Costs Activity (Detail) (USD $) In Millions, unless otherwise specified	3 Months Ended
	Mar. 31, 2013
Restructuring Cost and Reserve [Line Items]
Accrual Balance, at Beginning of Period	$ 25.7
Reorganization Costs, net
Payments	(2.6)
Foreign Currency and Other	(0.1)
Accrual Balance, at End of Period	23.0
Severance and Other Employee-Related
Restructuring Cost and Reserve [Line Items]
Accrual Balance, at Beginning of Period	12.9
Reorganization Costs, net
Payments	(1.9)
Accrual Balance, at End of Period	11.0
Other Costs
Restructuring Cost and Reserve [Line Items]
Accrual Balance, at Beginning of Period	12.8
Reorganization Costs, net
Payments	(0.7)
Foreign Currency and Other	(0.1)
Accrual Balance, at End of Period	$ 12.0