Stock-Based Compensation (Detail) - Stock-Based Compensation Expense Recognized In Consolidated Statements Of Operations (USD $)	12 Months Ended
	Dec. 31, 2012		Dec. 31, 2011		Dec. 31, 2010
Stock-based compensation expense	$ 36,400,000	[1]	$ 32,900,000	[1]	$ 32,600,000	[1]
Total	36,378,000		32,865,000		32,634,000
Cost of Sales [Member]
Stock-based compensation expense	15,300,000		14,800,000		14,800,000
Selling, General and Administrative Expenses [Member]
Stock-based compensation expense	$ 21,100,000		$ 18,100,000		$ 17,800,000

[1] Includes charges of $5.1 million in 2012 and $3.1 million in both 2011 and 2010 for awards to retirement-eligible employees since these awards vest on an accelerated basis