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Segment Information (Narrative) (Details) (USD $)
In Thousands, unless otherwise specified
3 Months Ended 12 Months Ended
Dec. 31, 2014
Sep. 30, 2014
Jun. 30, 2014
Mar. 31, 2014
Dec. 31, 2013
Sep. 30, 2013
Jun. 30, 2013
Mar. 31, 2013
Dec. 31, 2014
segment
Dec. 31, 2013
Dec. 31, 2012
Concentration Risk [Line Items]                      
Net revenues $ 851,483us-gaap_SalesRevenueNet $ 758,994us-gaap_SalesRevenueNet $ 781,560us-gaap_SalesRevenueNet $ 750,819us-gaap_SalesRevenueNet $ 802,420us-gaap_SalesRevenueNet $ 712,731us-gaap_SalesRevenueNet $ 730,384us-gaap_SalesRevenueNet $ 672,899us-gaap_SalesRevenueNet $ 3,142,856us-gaap_SalesRevenueNet $ 2,918,434us-gaap_SalesRevenueNet $ 2,586,123us-gaap_SalesRevenueNet
Number of reportable segments                 2us-gaap_NumberOfReportableSegments    
Percentage of international revenues accounting for the Company's net revenues                 45.20%ctxs_RevenueNetPercentageAttributedtoForeignOperations 45.40%ctxs_RevenueNetPercentageAttributedtoForeignOperations 45.30%ctxs_RevenueNetPercentageAttributedtoForeignOperations
US to International Revenues                      
Concentration Risk [Line Items]                      
Net revenues                 $ 193,800us-gaap_SalesRevenueNet
/ us-gaap_StatementGeographicalAxis
= ctxs_UStoInternationalRevenuesMember
$ 215,300us-gaap_SalesRevenueNet
/ us-gaap_StatementGeographicalAxis
= ctxs_UStoInternationalRevenuesMember
$ 127,400us-gaap_SalesRevenueNet
/ us-gaap_StatementGeographicalAxis
= ctxs_UStoInternationalRevenuesMember
Ingram Micro | Net revenues | Customer concentration risk                      
Concentration Risk [Line Items]                      
Number of customers meeting concentration risk threshold 1ctxs_NumberofMajorCustomers
/ us-gaap_ConcentrationRiskByBenchmarkAxis
= us-gaap_SalesRevenueNetMember
/ us-gaap_ConcentrationRiskByTypeAxis
= us-gaap_CustomerConcentrationRiskMember
/ us-gaap_MajorCustomersAxis
= ctxs_IngramMicroMember
      1ctxs_NumberofMajorCustomers
/ us-gaap_ConcentrationRiskByBenchmarkAxis
= us-gaap_SalesRevenueNetMember
/ us-gaap_ConcentrationRiskByTypeAxis
= us-gaap_CustomerConcentrationRiskMember
/ us-gaap_MajorCustomersAxis
= ctxs_IngramMicroMember
      1ctxs_NumberofMajorCustomers
/ us-gaap_ConcentrationRiskByBenchmarkAxis
= us-gaap_SalesRevenueNetMember
/ us-gaap_ConcentrationRiskByTypeAxis
= us-gaap_CustomerConcentrationRiskMember
/ us-gaap_MajorCustomersAxis
= ctxs_IngramMicroMember
1ctxs_NumberofMajorCustomers
/ us-gaap_ConcentrationRiskByBenchmarkAxis
= us-gaap_SalesRevenueNetMember
/ us-gaap_ConcentrationRiskByTypeAxis
= us-gaap_CustomerConcentrationRiskMember
/ us-gaap_MajorCustomersAxis
= ctxs_IngramMicroMember
1ctxs_NumberofMajorCustomers
/ us-gaap_ConcentrationRiskByBenchmarkAxis
= us-gaap_SalesRevenueNetMember
/ us-gaap_ConcentrationRiskByTypeAxis
= us-gaap_CustomerConcentrationRiskMember
/ us-gaap_MajorCustomersAxis
= ctxs_IngramMicroMember
Concentration risk percentage                 13.00%us-gaap_ConcentrationRiskPercentage1
/ us-gaap_ConcentrationRiskByBenchmarkAxis
= us-gaap_SalesRevenueNetMember
/ us-gaap_ConcentrationRiskByTypeAxis
= us-gaap_CustomerConcentrationRiskMember
/ us-gaap_MajorCustomersAxis
= ctxs_IngramMicroMember
14.00%us-gaap_ConcentrationRiskPercentage1
/ us-gaap_ConcentrationRiskByBenchmarkAxis
= us-gaap_SalesRevenueNetMember
/ us-gaap_ConcentrationRiskByTypeAxis
= us-gaap_CustomerConcentrationRiskMember
/ us-gaap_MajorCustomersAxis
= ctxs_IngramMicroMember
16.00%us-gaap_ConcentrationRiskPercentage1
/ us-gaap_ConcentrationRiskByBenchmarkAxis
= us-gaap_SalesRevenueNetMember
/ us-gaap_ConcentrationRiskByTypeAxis
= us-gaap_CustomerConcentrationRiskMember
/ us-gaap_MajorCustomersAxis
= ctxs_IngramMicroMember