Cost Reduction Actions - Additional Information (Detail) $ in Millions	1 Months Ended	3 Months Ended	6 Months Ended
	Apr. 30, 2015 USD ($)	Jun. 30, 2015 USD ($) Employee	Jun. 30, 2015 USD ($)
Restructuring Cost and Reserve [Line Items]
Estimated pretax restructuring charge	$ 300.0	$ 52.6	$ 52.6
Work-force reduction charges		42.5
Asset Impairments And Leasehold Improvement Write Offs
Restructuring Cost and Reserve [Line Items]
Estimated pretax restructuring charge		10.1
Cost of Sales \| Technology
Restructuring Cost and Reserve [Line Items]
Estimated pretax restructuring charge		0.1
Cost of Sales \| Services
Restructuring Cost and Reserve [Line Items]
Estimated pretax restructuring charge		13.3
Selling, General and Administrative Expenses
Restructuring Cost and Reserve [Line Items]
Estimated pretax restructuring charge		27.5
Research and Development Expense
Restructuring Cost and Reserve [Line Items]
Estimated pretax restructuring charge		11.7
United States
Restructuring Cost and Reserve [Line Items]
Severance costs		$ 25.4
Number of employees \| Employee		530
Non-US
Restructuring Cost and Reserve [Line Items]
Severance costs		$ 17.1
Number of employees \| Employee		413