Condensed Consolidated Statements Of Income (Unaudited) - USD ($) shares in Thousands, $ in Thousands	3 Months Ended
	Mar. 31, 2017	Mar. 31, 2016
Revenues:
Product and licenses	$ 191,597	$ 202,033
Software as a service	38,730	31,115
License updates and maintenance	402,755	393,018
Professional services	29,595	32,607
Total net revenues	662,677	658,773
Cost of net revenues:
Cost of product and license revenues	29,711	31,395
Cost of services and maintenance revenues	59,659	54,359
Amortization of product related intangible assets	13,088	14,057
Total cost of net revenues	102,458	99,811
Gross margin	560,219	558,962
Operating expenses:
Research and development	102,669	102,232
Sales, marketing and services	246,765	233,927
General and administrative	76,211	77,819
Amortization of other intangible assets	3,646	3,720
Restructuring	7,986	45,556
Separation	298	456
Total operating expenses	437,575	463,710
Income from operations	122,644	95,252
Interest income	5,612	3,751
Interest expense	11,553	11,155
Other income (expense), net	3,326	(1,003)
Income from continuing operations before income taxes	120,029	86,845
Income tax expense	49,704	13,591
Income from continuing operations	70,325	73,254
(Loss) income from discontinued operations, net of income tax expense of $2,900 and $5,493, respectively	(42,704)	10,209
Net income	$ 27,621	$ 83,463
Basic earnings (loss) per share:
Income from continuing operations, basic (in dollars per share)	$ 0.46	$ 0.47
(Loss) income from discontinued operations, basic (in dollars per share)	(0.28)	0.07
Basic earnings per share (in dollars per share)	0.18	0.54
Diluted earnings (loss) per share:
Income from continuing operations, diluted (in dollars per share)	0.44	0.47
(Loss) income from discontinued operations, diluted (in dollars per share)	(0.27)	0.07
Diluted earnings per share (in dollars per share)	$ 0.17	$ 0.54
Weighted average shares outstanding:
Basic (in shares)	153,247	154,067
Diluted (in shares)	158,369	155,945