Quarterly report pursuant to Section 13 or 15(d)

Document and Entity Information

v3.3.0.814
Document and Entity Information - shares
3 Months Ended
Sep. 30, 2015
Oct. 09, 2015
DEI [Abstract]    
Document Type 10-Q  
Amendment Flag false  
Document Period End Date Sep. 30, 2015  
Document Fiscal Year Focus 2016  
Document Fiscal Period Focus Q1  
Entity Registrant Name KLA TENCOR CORP  
Entity Central Index Key 0000319201  
Entity Filer Category Large Accelerated Filer  
Current Fiscal Year End Date --06-30  
Trading Symbol klac  
Entity Common Stock, Shares Outstanding   155,945,694