Document And Entity Information (USD $)	12 Months Ended
	Apr. 03, 2015	May 01, 2015	Oct. 03, 2014
Document And Entity Information [Abstract]
Document Type	10-K
Amendment Flag	false
Document Period End Date	Apr. 03, 2015
Document Fiscal Year Focus	2015
Document Fiscal Period Focus	FY
Entity Registrant Name	SYMANTEC CORP
Entity Central Index Key	0000849399
Current Fiscal Year End Date	--04-03
Entity Filer Category	Large Accelerated Filer
Entity Common Stock, Shares Outstanding		680,727,932
Entity Public Float			$ 16,119,850,545
Entity Current Reporting Status	Yes
Entity Well-known Seasoned Issuer	Yes
Entity Voluntary Filers	No