Annual report pursuant to Section 13 and 15(d)

DEI Document

v3.10.0.1
DEI Document - USD ($)
$ in Millions
12 Months Ended
Jun. 30, 2018
Jul. 13, 2018
Dec. 31, 2017
DEI [Abstract]
Document Type 10-K
Amendment Flag false
Document Period End Date Jun. 30, 2018
Document Fiscal Year Focus 2018
Document Fiscal Period Focus FY
Entity Registrant Name KLA TENCOR CORP
Entity Central Index Key 0000319201
Entity Filer Category Large Accelerated Filer
Current Fiscal Year End Date --06-30
Entity Current Reporting Status Yes
Entity Voluntary Filers No
Entity Well-known Seasoned Issuer Yes
Trading Symbol klac
Entity Common Stock, Shares Outstanding 156,126,508
Entity Public Float $ 16,430
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