Accrued Restructuring Costs Activity (Detail) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014
Restructuring Cost and Reserve [Line Items]
Accrual Balance, at Beginning of Period			$ 10.8
Restructuring costs, net	$ 0.5	$ 0.5	5.0	$ 3.1
Payments			(8.4)
Foreign Currency and Other			(0.6)
Accrual Balance, at End of Period	6.8		6.8
Severance and Other Employee-Related
Restructuring Cost and Reserve [Line Items]
Accrual Balance, at Beginning of Period			5.4
Restructuring costs, net			1.2
Payments			(4.3)
Foreign Currency and Other			(0.5)
Accrual Balance, at End of Period	1.8		1.8
Other Costs
Restructuring Cost and Reserve [Line Items]
Accrual Balance, at Beginning of Period			5.4
Restructuring costs, net			3.8
Payments			(4.1)
Foreign Currency and Other			(0.1)
Accrual Balance, at End of Period	$ 5.0		$ 5.0