Restructuring and Relocation Activities - Schedule of Program Metrics (Detail) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2016 USD ($)	Sep. 30, 2015 USD ($)	Sep. 30, 2016 USD ($) Employees	Sep. 30, 2015 USD ($)
Restructuring Cost And Reserve [Line Items]
Approximate positions eliminated by the program | Employees			1,950
Costs of reduction in headcount as a result of reorganization			$ 216.0
Other expenses associated with the Program	$ 6.0	$ 13.0	17.3	$ 32.2
Total expense	7.6	51.4	20.5	100.2
Capital expenditures	35.4	$ 21.0	92.4	$ 25.5
Total Cumulative Expense	310.0		310.0
Cumulative Capital expenditures	182.0		182.0
Minimum [Member]
Restructuring Cost And Reserve [Line Items]
Costs of reduction in headcount as a result of reorganization			235.0
Other expenses associated with the Program			155.0
Total expense			390.0
Capital expenditures			250.0
Proceeds, foreign exchange and other cash items			(70.0)
Total estimated net cash cost	570.0		570.0
Maximum [Member]
Restructuring Cost And Reserve [Line Items]
Costs of reduction in headcount as a result of reorganization			245.0
Other expenses associated with the Program			160.0
Total expense			405.0
Capital expenditures			255.0
Proceeds, foreign exchange and other cash items			(75.0)
Total estimated net cash cost	$ 585.0		585.0
Other Restructuring
Restructuring Cost And Reserve [Line Items]
Other expenses associated with the Program			$ 94.0