Recent Accounting Changes and Accounting Pronouncements Change in Accounting Policy - Diluted EPS Impact (Details)	3 Months Ended
Jul. 02, 2016 $ / shares
Accounting Policies [Abstract]
DilutedEarningsPerShareIncrease,ExcessTaxBenefit,Share-basedCompensation	$ 0.02

Diluted Earnings Per Share Increase, Excess Tax Benefit, Share-based Compensation

No definition available.

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Namespace Prefix:	xlnx_
Data Type:	num:perShareItemType
Balance Type:	na
Period Type:	duration