Segment Information (Revenues By Product Grouping) (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended				9 Months Ended
	Sep. 30, 2013		Sep. 30, 2012		Sep. 30, 2013		Sep. 30, 2012
Segment Reporting Information [Line Items]
Net revenues	$ 712,731		$ 641,422		$ 2,116,014		$ 1,846,127
Infrastructure [Member]
Segment Reporting Information [Line Items]
Net revenues	564,552		511,763		1,686,411		1,470,225
Infrastructure [Member] | Mobile and Desktop revenues [Member]
Segment Reporting Information [Line Items]
Net revenues	380,878	[1]	351,607	[1]	1,121,102	[1]	1,037,144	[1]
Infrastructure [Member] | Networking and Cloud Solutions revenues [Member]
Segment Reporting Information [Line Items]
Net revenues	146,474	[2]	127,327	[2]	458,753	[2]	340,319	[2]
Infrastructure [Member] | Professional services [Member]
Segment Reporting Information [Line Items]
Net revenues	33,725	[3]	31,022	[3]	96,653	[3]	86,141	[3]
Infrastructure [Member] | Other [Member]
Segment Reporting Information [Line Items]
Net revenues	3,475		1,807		9,903		6,621
SaaS [Member]
Segment Reporting Information [Line Items]
Net revenues	$ 148,179		$ 129,659		$ 429,603		$ 375,902

[1] Mobile and Desktop revenues are primarily comprised of sales from the Company’s desktop virtualization products, XenDesktop and XenApp, and the Company's Mobility products, which include XenMobile and related license updates and maintenance and support.

[2] Networking and Cloud revenues are primarily comprised of sales from the Company’s cloud networking products, which include NetScaler, CloudBridge and Bytemobile Smart Capacity, and the Company’s cloud platform products which include XenServer, CloudPlatform and CloudPortal and related license updates and maintenance and support.

[3] Professional services revenues are primarily comprised of revenues from consulting services and product training and certification services.