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				6 Months Ended
	Jun. 30, 2013		Jun. 30, 2012		Jun. 30, 2013		Jun. 30, 2012
Stock-based compensation expense	$ 47,857	[1]	$ 38,262	[1]	$ 91,413	[1]	$ 68,819	[1]
Cost of Services and Maintenance Revenues [Member]
Stock-based compensation expense	625		507		1,259		957
Research and Development [Member]
Stock-based compensation expense	16,503		14,055		32,156		25,199
Sales, Marketing and Services [Member]
Stock-based compensation expense	17,487		13,307		32,661		23,277
General and Administrative [Member]
Stock-based compensation expense	$ 13,242		$ 10,393		$ 25,337		$ 19,386

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