Name:	us-gaap_ConcentrationRiskLineItems
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For an entity that discloses a concentration risk in relation to quantitative amount, which serves as the "benchmark" (or denominator) in the equation, this concept represents the concentration percentage derived from the division.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 275
-SubTopic 10
-Section 50
-Paragraph 18
-URI http://asc.fasb.org/extlink&oid=99393423&loc=d3e6351-108592

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 825
-SubTopic 10
-Section 50
-Paragraph 20
-URI http://asc.fasb.org/extlink&oid=118260190&loc=d3e13531-108611

Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 825
-SubTopic 10
-Section 50
-Paragraph 21
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=118260190&loc=d3e13537-108611

Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 275
-SubTopic 10
-Section 50
-Paragraph 20
-URI http://asc.fasb.org/extlink&oid=99393423&loc=d3e6404-108592

Name:	us-gaap_ConcentrationRiskPercentage1
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Number of end customers accounted for more than 10% of net revenues.

No definition available.

Name:	xlnx_NumberOfEndCustomersAccountedForNetRevenues
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Percentage of accounts receivable accounted from distributor.

No definition available.

Name:	xlnx_PercentageOfAccountsReceivableAccountedFromCompanyDistributorOne
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Data Type:	num:percentItemType
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Period Type:	instant

Net revenue threshold for significant customer.

No definition available.

Name:	xlnx_PercentageOfNetRevenuesThroughResaleOfProductFromCompanyDistributorOne
Namespace Prefix:	xlnx_
Data Type:	num:percentItemType
Balance Type:	na
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Percentage of higher grade security investment in debt securities

No definition available.