XML 22 R1.htm IDEA: XBRL DOCUMENT v3.19.2
Document and Entity Information - USD ($)
12 Months Ended
Apr. 26, 2019
Jun. 07, 2019
Oct. 26, 2018
Document And Entity Information [Abstract]      
Document Type 10-K    
Amendment Flag false    
Document Period End Date Apr. 26, 2019    
Document Fiscal Year Focus 2019    
Document Fiscal Period Focus FY    
Trading Symbol NTAP    
Entity Registrant Name NetApp, Inc.    
Entity Central Index Key 0001002047    
Current Fiscal Year End Date --04-26    
Entity Well-known Seasoned Issuer Yes    
Entity Current Reporting Status Yes    
Entity Voluntary Filers No    
Entity Filer Category Large Accelerated Filer    
Entity Small Business false    
Entity Emerging Growth Company false    
Entity Shell Company false    
Entity Common Stock, Shares Outstanding   240,022,187  
Entity Public Float     $ 12,456,432,144
Entity Address, State or Province California