Stock-Based Compensation (Detail Of The Total Stock-Based Compensation Recognized By Income Statement Classification) (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2013		Mar. 31, 2012
Stock-based compensation expense	$ 43,556	[1]	$ 30,557	[1]
Cost of Sales [Member]
Stock-based compensation expense	634		450
Research and Development Expense [Member]
Stock-based compensation expense	15,653		11,144
Sales, Marketing And Services [Member]
Stock-based compensation expense	15,174		9,970
General and Administrative Expense [Member]
Stock-based compensation expense	$ 12,095		$ 8,993

[1] Represents expenses presented to management on a consolidated basis only and not allocated to the operating segments.