Litigation Settlements and Contingencies (Details) (USD $) In Thousands, unless otherwise specified	0 Months Ended	3 Months Ended		12 Months Ended
	Dec. 28, 2007	Mar. 31, 2012		Mar. 30, 2013	Mar. 31, 2012	Apr. 02, 2011
Contingencies (Textual) [Abstract]
Loss contingency, damages sought, value	$ 15,400	$ 15,400	[1]	$ 0	$ 15,400	$ 0

[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.