Individual Components of Work Force Reduction Costs (Detail) - Jun. 30, 2015 $ in Millions	USD ($) Employee
Restructuring Cost and Reserve [Line Items]
Headcount | Employee	341
Charges for workforce reductions	$ 42.5
Utilized	(11.8)
Translation adjustments	(0.3)
Balance at June 30, 2015	$ 30.4
Remaining Of Current Year
Restructuring Cost and Reserve [Line Items]
Headcount | Employee	337
2015 remaining six months	$ 28.9
Two Thousand Sixteen [Member]
Restructuring Cost and Reserve [Line Items]
Headcount | Employee	4
2015 remaining six months	$ 1.5
Workforce Reductions
Restructuring Cost and Reserve [Line Items]
Headcount | Employee	943
Workforce Reductions | United States
Restructuring Cost and Reserve [Line Items]
Charges for workforce reductions	$ 25.4
Utilized	(3.7)
Balance at June 30, 2015	21.7
Workforce Reductions | Non-US
Restructuring Cost and Reserve [Line Items]
Charges for workforce reductions	17.1
Utilized	(8.1)
Translation adjustments	(0.3)
Balance at June 30, 2015	8.7
Workforce Reductions | Remaining Of Current Year | United States
Restructuring Cost and Reserve [Line Items]
2015 remaining six months	20.4
Workforce Reductions | Remaining Of Current Year | Non-US
Restructuring Cost and Reserve [Line Items]
2015 remaining six months	8.5
Workforce Reductions | Two Thousand Sixteen [Member] | United States
Restructuring Cost and Reserve [Line Items]
2015 remaining six months	1.3
Workforce Reductions | Two Thousand Sixteen [Member] | Non-US
Restructuring Cost and Reserve [Line Items]
2015 remaining six months	$ 0.2
Amount Fully Utilized
Restructuring Cost and Reserve [Line Items]
Headcount | Employee	(602)