Accrued Restructuring Costs Activity (Detail) - Entity [Domain] - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014
Restructuring Cost and Reserve [Line Items]
Accrual Balance, at Beginning of Period			$ 10.8
Restructuring costs, net	$ 1.9	$ 2.3	4.5	$ 2.6
Payments			(6.5)
Foreign Currency and Other			(0.5)
Accrual Balance, at End of Period	8.3		8.3
Severance and Other Employee-Related
Restructuring Cost and Reserve [Line Items]
Accrual Balance, at Beginning of Period			5.4
Restructuring costs, net			0.7
Payments			(3.4)
Foreign Currency and Other			(0.4)
Accrual Balance, at End of Period	2.3		2.3
Other Costs
Restructuring Cost and Reserve [Line Items]
Accrual Balance, at Beginning of Period			5.4
Restructuring costs, net			3.8
Payments			(3.1)
Foreign Currency and Other			(0.1)
Accrual Balance, at End of Period	$ 6.0		$ 6.0