Name:	us-gaap_BusinessAcquisitionLineItems
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

This element represents acquisition-related costs incurred to effect a business combination which costs have been expensed during the period. Such costs include finder's fees; advisory, legal, accounting, valuation, and other professional or consulting fees; general administrative costs, including the costs of maintaining an internal acquisitions department; and may include costs of registering and issuing debt and equity securities.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 805
-SubTopic 10
-Section 25
-Paragraph 23
-URI http://asc.fasb.org/extlink&oid=116868678&loc=d3e1043-128460

Name:	us-gaap_BusinessCombinationAcquisitionRelatedCosts
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

Face amount or stated value per share of common stock.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02(29))
-URI http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682

Name:	us-gaap_CommonStockParOrStatedValuePerShare
Namespace Prefix:	us-gaap_
Data Type:	num:perShareItemType
Balance Type:	na
Period Type:	instant

Business Combination, Acquisition Related Costs, Paid

No definition available.

Name:	xlnx_BusinessCombinationAcquisitionRelatedCostsPaid
Namespace Prefix:	xlnx_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

Business Combination, Consideration Transferred, Additional Obligation

No definition available.

Name:	xlnx_BusinessCombinationConsiderationTransferredAdditionalObligation
Namespace Prefix:	xlnx_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

Business Combination, Consideration Transferred, Right to Receive, Entity Shares Issued Per Acquiree Share

No definition available.

Name:	xlnx_BusinessCombinationConsiderationTransferredRightToReceiveEntitySharesIssuedPerAcquireeShare
Namespace Prefix:	xlnx_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	duration

Liabilities Subject to Compromise, Early Contract Termination Fees, Failure To Complete

No definition available.