Restructuring and Relocation Activities - Schedule of Program Metrics (Detail) $ in Millions	3 Months Ended
	Mar. 31, 2016 USD ($) Employees	Mar. 31, 2015 USD ($)
Restructuring Cost And Reserve [Line Items]
Approximate positions eliminated by the program | Employees	1,950
Other expenses associated with the plan	$ 6.1	$ 8.6
Total expense	6.1	21.3
Capital expenditures	19.1	$ 2.4
Costs of reduction in headcount as a result of reorganization - to date cumulative expense	297.0
Capital expenditures - to date	$ 109.0
EQIP [Member]
Restructuring Cost And Reserve [Line Items]
Announcement Date	2013-05
Status	Estimated to be completed by 12/31/2016
Approximate positions eliminated by the program | Employees	900
Costs of reduction in headcount as a result of reorganization	$ 130.0
Total estimated net cash cost	220.0
Costs of reduction in headcount as a result of reorganization - to date cumulative expense	178.0
Capital expenditures - to date	45.0
EQIP [Member] | Estimated Program Costs [Member]
Restructuring Cost And Reserve [Line Items]
Capital expenditures	$ 45.0
FUSION [Member]
Restructuring Cost And Reserve [Line Items]
Announcement Date	2014-12
Status	Estimated to be completed by 12/31/2018
Approximate positions eliminated by the program | Employees	1,050
Costs of reduction in headcount as a result of reorganization - to date cumulative expense	$ 119.0
Capital expenditures - to date	64.0
Minimum [Member] | Estimated Program Costs [Member]
Restructuring Cost And Reserve [Line Items]
Costs of reduction in headcount as a result of reorganization	235.0
Other expenses associated with the plan	160.0
Total expense	395.0
Capital expenditures	250.0
Proceeds, foreign exchange and other cash items	(65.0)
Total estimated net cash cost	580.0
Minimum [Member] | EQIP [Member] | Estimated Program Costs [Member]
Restructuring Cost And Reserve [Line Items]
Other expenses associated with the plan	50.0
Total expense	180.0
Proceeds, foreign exchange and other cash items	(5.0)
Minimum [Member] | FUSION [Member] | Estimated Program Costs [Member]
Restructuring Cost And Reserve [Line Items]
Costs of reduction in headcount as a result of reorganization	105.0
Other expenses associated with the plan	110.0
Total expense	215.0
Capital expenditures	205.0
Proceeds, foreign exchange and other cash items	(60.0)
Total estimated net cash cost	360.0
Maximum [Member] | Estimated Program Costs [Member]
Restructuring Cost And Reserve [Line Items]
Costs of reduction in headcount as a result of reorganization	240.0
Other expenses associated with the plan	170.0
Total expense	410.0
Capital expenditures	255.0
Proceeds, foreign exchange and other cash items	(75.0)
Total estimated net cash cost	590.0
Maximum [Member] | EQIP [Member] | Estimated Program Costs [Member]
Restructuring Cost And Reserve [Line Items]
Other expenses associated with the plan	55.0
Total expense	185.0
Proceeds, foreign exchange and other cash items	(10.0)
Maximum [Member] | FUSION [Member] | Estimated Program Costs [Member]
Restructuring Cost And Reserve [Line Items]
Costs of reduction in headcount as a result of reorganization	110.0
Other expenses associated with the plan	115.0
Total expense	225.0
Capital expenditures	210.0
Proceeds, foreign exchange and other cash items	(65.0)
Total estimated net cash cost	370.0
Employee Severance
Restructuring Cost And Reserve [Line Items]
Costs of reduction in headcount as a result of reorganization - to date cumulative expense	213.0
Employee Severance | EQIP [Member]
Restructuring Cost And Reserve [Line Items]
Costs of reduction in headcount as a result of reorganization - to date cumulative expense	130.0
Employee Severance | FUSION [Member]
Restructuring Cost And Reserve [Line Items]
Costs of reduction in headcount as a result of reorganization - to date cumulative expense	83.0
Other Restructuring
Restructuring Cost And Reserve [Line Items]
Costs of reduction in headcount as a result of reorganization - to date cumulative expense	84.0
Other Restructuring | EQIP [Member]
Restructuring Cost And Reserve [Line Items]
Costs of reduction in headcount as a result of reorganization - to date cumulative expense	48.0
Other Restructuring | FUSION [Member]
Restructuring Cost And Reserve [Line Items]
Costs of reduction in headcount as a result of reorganization - to date cumulative expense	$ 36.0