Segment Information (Revenues By Product Grouping) (Details) - USD ($) $ in Thousands		3 Months Ended								12 Months Ended
		Dec. 31, 2019	Sep. 30, 2019	Jun. 30, 2019	Mar. 31, 2019	Dec. 31, 2018	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	Dec. 31, 2019	Dec. 31, 2018		Dec. 31, 2017
Segment Reporting Information [Line Items]
Net revenues		$ 809,823	$ 732,901	$ 748,697	$ 719,143	$ 801,870	$ 732,476	$ 742,365	$ 697,192	$ 3,010,564	$ 2,973,903	[1],[2]	$ 2,824,686	[1],[2]
Workspace
Segment Reporting Information [Line Items]
Net revenues	[3]									2,127,350	2,024,289		1,901,952	[2]
Networking
Segment Reporting Information [Line Items]
Net revenues	[4]									750,268	817,193		790,434	[2]
Professional services
Segment Reporting Information [Line Items]
Net revenues	[5]									$ 132,946	$ 132,421		$ 132,300	[2]
Net revenues | Arrow Group | Customer concentration risk
Segment Reporting Information [Line Items]
Concentration risk percentage										15.00%	14.00%		12.00%

[1] As noted above, prior period amounts have not been adjusted under the modified retrospective method of adoption of the revenue recognition standard.

[2] Prior period amounts have not been adjusted under the modified retrospective method of adoption of the revenue recognition standard.

[3] Workspace revenues are primarily comprised of sales from the Company’s application virtualization solutions, which include Citrix Workspace, Citrix Virtual Apps and Desktops, the Company's unified endpoint management solutions, which include Citrix Endpoint Management, related license updates and maintenance and support, Citrix Content Collaboration, and cloud offerings

[4] Networking revenues primarily include Citrix ADC and Citrix SD-WAN, related license updates and maintenance and support and cloud offerings.

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