Employee Stock-Based Compensation and Benefit Plans (Tables)

12 Months Ended

Dec. 31, 2015

Share-based Compensation Arrangement by Share-based Payment Award [Line Items]

Assumptions Used To Value Option Grants

The Company used the Black-Scholes model to estimate the fair value of its Employee Stock Purchase Plan awards with the following weighted-average assumptions:

	Year Ended
	December 31, 2015
Expected volatility factor	0.35
Risk free interest rate	0.25	%
Expected dividend yield	0	%
Expected life (in years)	0.5

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	2015		2014		2013
Cost of services and maintenance revenues	$	2,940	$	2,560	$	2,540
Research and development	47,723		55,560		63,448
Sales, marketing and services	49,315		61,925		65,549
General and administrative	47,390		49,242		52,404
Total	$	147,368	$	169,287	$	183,941

Schedule of Nonvested Stock Unit Activity

The following table summarizes the Company's non-vested stock unit activity for the year ended December 31, 2015:

	Number of Shares		Weighted- Average Fair Value at Grant Date
Non-vested stock units at December 31, 2014	5,037,295		$	66.20
Granted	3,415,207		66.70
Assumed from acquisitions	142,822		64.78
Vested	(1,971,312	)	64.10
Forfeited	(1,476,086	)	69.38
Non-vested stock units at December 31, 2015	5,147,926		65.00

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, 2014	3,577,549		$	67.60	1.29
Exercised	(1,875,339	)	59.87
Forfeited or expired	(390,098	)	77.36
Outstanding at December 31, 2015	1,312,112		75.72		0.58	$	5,978
Vested or expected to vest	1,311,936		75.73		0.58	$	5,977
Exercisable at December 31, 2015	1,307,487		75.82		0.57	$	5,857

Employee stock option

Share-based Compensation Arrangement by Share-based Payment Award [Line Items]

Assumptions Used To Value Option Grants

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

	Stock options granted or assumed during
		2013
Expected volatility factor		0.39
Approximate risk free interest rate		0.4%
Expected term (in years)		3.35
Expected dividend yield		0%

Non-vested stock

Share-based Compensation Arrangement by Share-based Payment Award [Line Items]

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 2015 Grant		March 2014 Grant		March 2013 Grant
Expected volatility factor	0.14 - 0.29		0.19 - 0.38		0.16 - 0.42
Risk free interest rate	0.85	%	0.81	%	0.33	%
Expected dividend yield	0	%	0	%	0	%