Condensed Consolidated Statements Of Income (Unaudited) - USD ($) shares in Thousands, $ in Thousands	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Revenues:
Revenue	$ 860,945	$ 719,143
Cost of net revenues:
Total cost of net revenues	115,577	107,473
Gross margin	745,368	611,670
Operating expenses:
Research and development	134,458	130,263
Sales, marketing and services	326,109	274,655
General and administrative	80,099	77,547
Amortization of other intangible assets	702	3,529
Restructuring Charges	2,453	2,832
Total operating expenses	543,821	488,826
Income from operations	201,547	122,844
Interest income	1,605	9,674
Interest expense	(14,611)	(18,033)
Other income, net	2,098	3,699
Income before income taxes	190,639	118,184
Income tax expense	9,417	7,836
Net income	$ 181,222	$ 110,348
Earnings per share:
Basic earnings per share (in dollars per share)	$ 1.45	$ 0.84
Diluted earnings per share (in dollars per share)	$ 1.42	$ 0.78
Weighted average shares outstanding:
Basic (in shares)	124,737	131,483
Diluted (in shares)	127,577	141,025
Subscription [Member]
Revenues:
Revenue	$ 268,236	$ 141,606
Product and License [Member]
Revenues:
Revenue	172,858	135,022
Cost of net revenues:
Cost of net revenues	21,256	25,744
Support and Services [Member]
Revenues:
Revenue	419,851	442,515
Subscription, Support and Service [Member]
Cost of net revenues:
Cost of net revenues	86,040	71,428
Product [Member]
Cost of net revenues:
Amortization of product related intangible assets	$ 8,281	$ 10,301