Quarterly report pursuant to Section 13 or 15(d)

Document and Entity Information

v3.10.0.1
Document and Entity Information - shares
3 Months Ended
Sep. 30, 2018
Oct. 19, 2018
DEI [Abstract]
Document Type 10-Q
Amendment Flag false
Document Period End Date Sep. 30, 2018
Document Fiscal Year Focus 2019
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
Entity Emerging Growth Company false
Entity Small Business false
Current Fiscal Year End Date --06-30
Trading Symbol klac
实体普通股, Shares Outstanding 153,075,310
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