Segment Customer and Geographic Information - Customer Accounted Revenues (Detail) (Sales [Member])	3 Months Ended		6 Months Ended
	Jun. 30, 2013	Jun. 30, 2012	Jun. 30, 2013	Jun. 30, 2012
Revenues from External Customers and Long-Lived Assets [Line Items]
Total Sales	10.00%	10.00%	10.00%	10.00%
Europe, Middle East, & Africa [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Total Sales	11.00%	13.00%	10.00%	14.00%
Asia Pacific [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Total Sales	11.00%	9.00%	9.00%	10.00%
Other Americas [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Total Sales	7.00%	8.00%	6.00%	7.00%
Foreign [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Total Sales	29.00%	30.00%	25.00%	31.00%