Employee Stock-Based Compensation and Benefit Plans (Tables)

12 Months Ended

Dec. 31, 2014

Disclosure of Compensation Related Costs, Share-based Payments [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	2014		2013		2012
Cost of services and maintenance revenues	$	2,560	$	2,540	$	2,111
Research and development	55,560		63,448		54,616
Sales, marketing and services	61,925		65,549		51,519
General and administrative	49,242		52,404		41,694
Total	$	169,287	$	183,941	$	149,940

Assumptions Used To Value Option Grants

The grant date fair value of the non-vested performance stock unit awards was determined through the use of a Monte Carlo simulation model, which utilized multiple input variables that determined the probability of satisfying the market condition requirements applicable to each award as follows:

	March 2014 Grant		March 2013 Grant		March 2012 Grant
Expected volatility factor	0.19 - 0.38		0.16 - 0.42		0.21 - 0.39
Risk free interest rate	0.81	%	0.33	%	0.47	%
Expected dividend yield	0	%	0	%	0	%

The assumptions used to value options granted and/or assumed are as follows:

	Stock options granted or assumed during
	2013	2012
Expected volatility factor	0.39	0.38 - 0.43
Approximate risk free interest rate	0.4%	0.5% - 0.7%
Expected term (in years)	3.35	3.91
Expected dividend yield	0%	0%

Schedule of Nonvested Stock Unit Activity

The following table summarizes the Company's service based and market performance non-vested stock unit activity for the year ended December 31, 2014:

	Number of Shares		Weighted- Average Fair Value at Grant Date
Non-vested stock units at December 31, 2013	4,631,979		$	74.47
Granted	2,935,952		60.08
Assumed from acquisitions	90,930		65.12
Vested	(1,639,573	)	72.15
Forfeited	(981,993	)	76.69
Non-vested stock units at December 31, 2014	5,037,295		66.20

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, 2013	5,406,977		$	59.64	2.15
Exercised	(1,308,653	)	35.62
Forfeited or expired	(520,775	)	65.20
Outstanding at December 31, 2014	3,577,549		67.60		1.29	$	17,061
Vested or expected to vest	3,574,580		67.62		1.29	$	16,980
Exercisable at December 31, 2014	3,483,456		68.06		1.25	$	15,368