Accrued Restructuring Costs Activity (Detail) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2014		Dec. 31, 2013		Dec. 31, 2012
Restructuring Cost and Reserve [Line Items]
Accrual Balance, at Beginning of Period	$ 30.0		$ 25.7
Restructuring Costs, net	7.7		22.0		27.1
Payments	(26.6)		(17.8)
Foreign Currency and Other	(0.3)		0.1
Accrual Balance, at End of Period	10.8		30.0		25.7
Severance and Other Employee-Related
Restructuring Cost and Reserve [Line Items]
Accrual Balance, at Beginning of Period	16.6	[1]	12.9	[1]
Restructuring Costs, net	6.3	[1]	15.4	[1]
Payments	(17.2)	[1]	(11.8)	[1]
Foreign Currency and Other	(0.3)	[1]	0.1	[1]
Accrual Balance, at End of Period	5.4	[1]	16.6	[1]
Other Costs
Restructuring Cost and Reserve [Line Items]
Accrual Balance, at Beginning of Period	13.4	[2]	12.8	[2]
Restructuring Costs, net	1.4	[2]	6.6	[2]
Payments	(9.4)	[2]	(6.0)	[2]
Accrual Balance, at End of Period	$ 5.4	[2]	$ 13.4	[2]

[1] For 2014 and 2013, the total headcount underlying these costs is approximately 2,850 and 2,840, respectively. At December 31, 2014, approximately 75 employees have not been terminated under the plans. The amounts accrued at December 31, 2014 for severance and other employee-related are expected to be paid through 2015.

[2] Amounts accrued at December 31, 2014 for other costs (principally lease and contract termination costs) are expected to be paid through 2016.