KLA Corporation Quarterly report pursuant to Section 13 or 15(d)

BUSINESS COMBINATIONS (Details)

v3.20.4

BUSINESS COMBINATIONS (Details) - USD ($)			3 Months Ended
BUSINESS COMBINATIONS (Details) - USD ($)	Apr. 24, 2020	Aug. 22, 2019	Dec. 31, 2020
Business Acquisition
Estimated additional consideration			$ 0
April 2020 acquisition
Business Acquisition
Total purchase consideration	$ 11,400,000
Acquired goodwill	$ 2,200,000
August 2019 acquisition
Business Acquisition
Total purchase consideration		$ 94,000,000.0
Additional consideration (up to)		$ 60,000,000.0
August 2019 acquisition \| Wafer Inspection and Patterning
Business Acquisition
Acquired goodwill			54,200,000
Other Acquisitions
Business Acquisition
Contingent consideration liability, non-current			$ 7,200,000

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