v2.4.0.8
Document and Entity Information
9 Months Ended
Apr. 03, 2015
May 06, 2015
Document Document And Entity Information [Abstract]    
Document Type 10-Q  
Amendment Flag false  
Document Period End Date Apr. 03, 2015  
Document Fiscal Year Focus 2015  
Document Fiscal Period Focus Q3  
Trading Symbol WDC  
Entity Registrant Name WESTERN DIGITAL CORP  
Entity Central Index Key 0000106040  
Current Fiscal Year End Date --07-03  
Entity Filer Category Large Accelerated Filer  
Entity Common Stock, Shares Outstanding   230,912,060