Revenue (Details) - USD ($)	3 Months Ended					9 Months Ended
	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	Sep. 30, 2017	[1]	Sep. 30, 2018	Sep. 30, 2017	[1]	Jan. 01, 2018	Dec. 31, 2017
Disaggregation of Revenue [Line Items]
Total net revenues	$ 732,476,000			$ 690,925,000		$ 2,172,033,000	$ 2,046,829,000
Short-term contract liabilities	1,212,280,000					1,212,280,000			$ 1,250,000,000	$ 1,308,474,000
Long-term portion of deferred revenues	467,722,000					467,722,000			$ 512,800,000	$ 555,769,000
Impairment of capitalized costs	0					0
Deferred revenue recognized	493,100,000					1,070,000,000
Transferred at Point in Time [Member]
Disaggregation of Revenue [Line Items]
Total net revenues	186,039,000					583,888,000
Transferred over Time [Member]
Disaggregation of Revenue [Line Items]
Total net revenues	546,437,000					$ 1,588,145,000
Minimum [Member]
Disaggregation of Revenue [Line Items]
Intangible asset life						3 years
Maximum [Member]
Disaggregation of Revenue [Line Items]
Intangible asset life						7 years
Customer Relationships [Member] | Minimum [Member]
Disaggregation of Revenue [Line Items]
Intangible asset life						3 years
Customer Relationships [Member] | Maximum [Member]
Disaggregation of Revenue [Line Items]
Intangible asset life						5 years
Sales, Marketing and Services Expense [Member]
Disaggregation of Revenue [Line Items]
Amortization of capitalized contract acquisition costs	$ 9,500,000					$ 25,700,000
Reclassification | Transferred at Point in Time [Member]
Disaggregation of Revenue [Line Items]
Total net revenues			$ 11,600,000
Reclassification | Transferred over Time [Member]
Disaggregation of Revenue [Line Items]
Total net revenues		$ 21,600,000				$ 10,000,000

[1] Workspace Services revenues are primarily comprised of sales from the Company’s application virtualization solutions, which include XenDesktop and XenApp, the Company's enterprise mobility management solutions, which include XenMobile, and Citrix Workspace, and related license updates, maintenance and subscription offerings.