Quarterly report pursuant to Section 13 or 15(d)

Document and Entity Information

v2.3.0.15
Document and Entity Information
3 Months Ended
Sep. 30, 2011
Oct. 13, 2011
Entity Information [Line Items]
Document Type 10-Q
Amendment Flag false
Document Period End Date Sep. 30, 2011
Document Fiscal Year Focus 2012
Document Fiscal Period Focus 第一季度
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 166,664,427
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