Stock-Based Compensation Plans (Details 6) (USD $) In Thousands, except Per Share data, unless otherwise specified	12 Months Ended
	Mar. 28, 2015		Mar. 29, 2014		Mar. 30, 2013
Summary of restricted stock unit activity and related information
Common stock, closing price per share	$ 42.32
Restricted Stock Units (RSUs) [Member]
Summary of restricted stock unit activity and related information
Number of Shares, Beginning balance	6,901		5,996		5,239
Number of Shares, Granted	3,201		3,297		3,018
Number of Shares, Vested	(2,698)	[1]	(2,066)	[1]	(1,778)	[1]
Number of Shares, Cancelled	(531)		(326)		(483)
Number of Shares, Ending balance	6,873		6,901		5,996
Number of Shares, Expected to vest	5,814
Weighted-Average Grant-Date Fair Value Per Share, Beginning balance (in dollars per share)	$ 35.08		$ 30.83		$ 29.01
Weighted-Average Grant-Date Fair Value Per Share, Granted (in dollars per share)	$ 43.11		$ 38.90		$ 31.58
Weighted-Average Grant-Date Fair Value Per Share, Vested (in dollars per share)	$ 33.82	[1]	$ 29.25	[1]	$ 27.01	[1]
Weighted-Average Grant-Date Fair Value Per Share, Cancelled (in dollars per share)	$ 32.91		$ 32.28		$ 29.69
Weighted-Average Grant-Date Fair Value Per Share, Ending balance (in dollars per share)	$ 39.07		$ 35.08		$ 30.83
Weighted-Average Grant-Date Fair Value Per Share, Expected to vest (in dollars per share)	$ 39.00
Weighted Average Remaining Contractual Term (in years)	2 years 3 months 15 days
Weighted Average Remaining Contractual Term, Expected to vest (in years)	2 years 3 months 17 days
Aggregate Intrinsic Value	$ 291,021	[2]
Aggregate Intrinsic Value, Expected to vest	$ 246,045	[2]

[1] The number of RSUs vested includes shares that the Company withheld on behalf of employees to satisfy the statutory tax withholding requirements.

[2] Aggregate intrinsic value for RSUs represents the closing price per share of Xilinx’s stock on March 28, 2015 of $42.32, multiplied by the number of RSUs outstanding or expected to vest as of March 28, 2015.