Segment, Customer and Geographic Information - Customer Accounted Revenues (Detail) - Sales [Member] - Geographic Concentration Risk [Member]	3 Months Ended		9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014
Asia Pacific [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Total Sales	9.00%	11.00%	9.00%	11.00%
EMEA [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Total Sales	7.00%	7.00%	9.00%	9.00%
Other Americas [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Total Sales	7.00%	7.00%	6.00%	6.00%
Total Foreign Sales [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Total Sales	23.00%	25.00%	24.00%	26.00%