Net Income Per Common Share (EPS) (Details) (USD $) In Millions, except Per Share data, unless otherwise specified	Dec. 28, 2013
Debt Instrument [Line Items]
Stated interest rate of debentures	3.125%
2.625% Senior Convertible Debentures [Member]
Debt Instrument [Line Items]
Stated interest rate of debentures	2.625%
Maximum number of shares to be purchased under call option	20.0
Price per share of common stock to be purchased under call option	$ 29.97

The price per share of the conversion feature embedded in the debt instrument.

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 470

-SubTopic 20

-Section 50

-Paragraph 5

-Subparagraph (b)

-URI http://asc.fasb.org/extlink&oid=6928298&loc=SL6031898-161870

+ Details

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Period Type:	instant

- Definition

Contractual interest rate for funds borrowed, under the debt agreement.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 02

-Paragraph 22

-Article 5

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 210

-SubTopic 10

-Section S99

-Paragraph 1

-Subparagraph (SX 210.5-02.22(a)(1))

-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

+ Details

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Balance Type:	na
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- Details

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Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Definition

Maximum number of shares to be purchased by Xilinx under call option.

+ References

No definition available.

+ Details

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Namespace Prefix:	xlnx_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	instant