Segment Information (Revenues By Product Grouping) (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2012		Mar. 31, 2011
Net revenues	$ 589,495		$ 490,888
Enterprise Divisions [Member]
Net revenues	468,762		391,116
Desktop Solutions Revenues [Member]
Net revenues	338,120	[1]	289,116	[1]
Datacenter And Cloud Solutions Revenues [Member]
Net revenues	99,673	[2]	77,667	[2]
Enterprise Technical Services [Member]
Net revenues	25,873	[3]	19,478	[3]
Other Revenues [Member]
Net revenues	5,096		4,855
Online Services Division [Member]
Net revenues	$ 120,733		$ 99,772

[1] Desktop Solutions revenues are primarily comprised of sales from the Company’s desktop virtualization product, XenDesktop, and the Company’s application virtualization product, XenApp, and related license updates and technical support.

[2] Datacenter and Cloud Solutions revenues are primarily comprised of sales from the Company’s cloud networking products, which include NetScaler, Branch Repeater and Access Gateway, and the Company’s CloudPlatform products which include XenServer, CloudStack and CloudPortal and related license updates and maintenance.

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