Balance Sheet Information (Details Textual)	Mar. 31, 2012	Apr. 02, 2011
Balance Sheet Information (Textual) [Abstract]
Current liabilities, minimum	5.00%	5.00%
Current liabilities, maximum	5.00%	5.00%
Percentage of Other accrued liabilities	5.00%	5.00%

Percentage of other accrued liabilities to current liabilities, maximum.

No definition available.

Name:	xlnx_PercentageOfOtherAccruedLiabilitiesToCurrentLiabilitiesMaximum
Namespace Prefix:	xlnx_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant