Cover - USD ($)	12 Months Ended
	Apr. 03, 2021	Apr. 30, 2021	Sep. 26, 2020
Cover [Abstract]
Document Type	10-K
Document Annual Report	true
Document Period End Date	Apr. 03, 2021
Current Fiscal Year End Date	--04-03
Document Transition Report	false
Entity File Number	000-18548
Entity Registrant Name	XILINX, INC
Entity Incorporation, State or Country Code	DE
Entity Address, Address Line One	2100 Logic Drive
Entity Tax Identification Number	77-0188631
Entity Address, City or Town	San Jose
Entity Address, State or Province	CA
Entity Address, Postal Zip Code	95124
City Area Code	408
Local Phone Number	559-7778
Title of 12(b) Security	Common stock, $0.01 par value
Trading Symbol	XLNX
Security Exchange Name	NASDAQ
Entity Well-known Seasoned Issuer	Yes
Entity Voluntary Filers	No
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Filer Category	Large Accelerated Filer
Entity Small Business	false
Entity Emerging Growth Company	false
ICFR Auditor Attestation Flag	true
Entity Shell Company	false
Entity Public Float			$ 20,370,129,000
Entity Common Stock, Shares Outstanding		245,840,000
Documents Incorporated by Reference	Parts of the Proxy Statement for the Registrant's Annual Meeting of Stockholders to be held on August 4, 2021 are incorporated by reference into Part III of this Annual Report on Form 10-K.
Amendment Flag	false
Document Fiscal Year Focus	2021
Document Fiscal Period Focus	FY
Entity Central Index Key	0000743988