Restructuring Charges (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended			12 Months Ended
	Oct. 01, 2011 position		Apr. 02, 2011 position	Mar. 30, 2013	Mar. 31, 2012	Apr. 02, 2011
Restructuring Charges [Abstract]
Number of positions eliminated in restructuring	46
Number of positions eliminated in restructuring, percent (less than)	2.00%
Restructuring charges	$ 3,369	[1]		$ 0	$ 3,369	$ 10,346
Number of positions realigned in restructuring			56

[1] Xilinx uses a 52- to 53-week fiscal year ending on the Saturday nearest March 31. Fiscal 2013 was a 52-week year and each quarter was a 13-week quarter.