Document and Entity Information - USD ($)	12 Months Ended
	Apr. 29, 2016	Jun. 10, 2016	Oct. 30, 2015
Document And Entity Information [Abstract]
Document Type	10-K
Amendment Flag	false
Document Period End Date	Apr. 29, 2016
Document Fiscal Year Focus	2016
Document Fiscal Period Focus	FY
Trading Symbol	NTAP
Entity Registrant Name	NetApp, Inc.
Entity Central Index Key	0001002047
Current Fiscal Year End Date	--04-29
Entity Well-known Seasoned Issuer	Yes
Entity Current Reporting Status	Yes
Entity Voluntary Filers	No
Entity Filer Category	Large Accelerated Filer
Entity Common Stock, Shares Outstanding		280,080,152
Entity Public Float			$ 5,131,692,964