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Nature of Operations (Details) (Asia Pacific, Europe, and Japan [Member], Sales Revenue, Goods, Net [Member], Geographic Concentration Risk [Member])
12 Months Ended
Mar. 28, 2015
Asia Pacific, Europe, and Japan [Member] | Sales Revenue, Goods, Net [Member] | Geographic Concentration Risk [Member]
 
Concentration Risk [Line Items]  
Concentration Risk, Percentage 50.00%us-gaap_ConcentrationRiskPercentage1
/ us-gaap_ConcentrationRiskByBenchmarkAxis
= us-gaap_SalesRevenueGoodsNetMember
/ us-gaap_ConcentrationRiskByTypeAxis
= us-gaap_GeographicConcentrationRiskMember
/ us-gaap_StatementGeographicalAxis
= xlnx_AsiaPacificEuropeandJapanMember