Annual report pursuant to Section 13 and 15(d)

DEI Document

DEI Document - USD ($)
$ in Millions
12 Months Ended
Jun. 30, 2019
Jul. 19, 2019
Dec. 31, 2018
DEI [Abstract]      
Document Type 10-K    
Amendment Flag false    
Document Period End Date Jun. 30, 2019    
Document Fiscal Year Focus 2019    
Document Fiscal Period Focus FY    
Entity Registrant Name KLA CORP    
Entity Central Index Key 0000319201    
Entity Filer Category Large Accelerated Filer    
Entity Emerging Growth Company false    
Entity Small Business false    
Entity Shell Company false    
Current Fiscal Year End Date --06-30    
Entity Current Reporting Status Yes    
Entity Voluntary Filers No    
Entity Well-known Seasoned Issuer Yes    
Entity Common Stock, Shares Outstanding   159,255,950  
Entity Public Float     $ 13,530