Employee Stock-Based Compensation and Benefit Plans (Tables)

12 Months Ended

Dec. 31, 2012

Share-based Compensation [Abstract]

Detail Of The Total Stock-Based Compensation Recognized By Income Statement Classification

The detail of the total stock-based compensation recognized by income statement classification is as follows (in thousands):

Income Statement Classifications	2012		2011		2010
Cost of services revenues	$	2,111	$	1,584	$	1,363
Research and development	54,616		31,763		54,123
Sales, marketing and services	51,519		31,354		28,704
General and administrative	41,694		28,208		19,568
Total	$	149,940	$	92,909	$	103,758

Schedule of Stock Option Activity

A summary of the status and activity of the Company’s fixed option awards is as follows:

Options	Number of Options		Weighted- Average Exercise Price		Weighted- Average Remaining Contractual Life (in years)	Aggregate Intrinsic Value (in thousands)
Outstanding at December 31, 2011	10,699,905		$	48.06	3.24
Granted	398,634		69.91
Assumed	11,860		6.87
Exercised	(3,136,511	)	34.56
Forfeited or expired	(384,356	)	59.46
Outstanding at December 31, 2012	7,589,532		54.15		2.70	$	120,299
Vested or expected to vest	7,392,833		53.92		2.68	$	118,535
Exercisable at December 31, 2012	4,835,085		49.52		2.26	$	94,374

Assumptions Used To Value Option Grants

The assumptions used to value option grants under the 2005 Plan are as follows:

	Stock options granted during
	2012	2011	2010
Expected volatility factor	0.38 - 0.43	0.38 - 0.50	0.31 - 0.37
Approximate risk free interest rate	0.5% - 0.7%	0.6% - 1.1%	0.9% - 1.6%
Expected term (in years)	3.91	3.27 - 3.91	3.06 - 3.27
Expected dividend yield	0%	0%	0%

Schedule of Nonvested Stock Unit Activity

The following table summarizes the Company's non-vested stock unit activity for the year ended December 31, 2012:

	Number of Shares		Weighted- Average Fair Value at Grant Date
Non-vested stock units at December 31, 2011	2,139,828		$	64.05
Granted	2,465,988		78.72
Vested	(838,978	)	59.95
Forfeited	(159,277	)	72.20
Non-vested stock units at December 31, 2012	3,607,561		74.70