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

SEGMENT REPORTING AND GEOGRAPHIC INFORMATION - Additional Information (Details)

v3.20.4

SEGMENT REPORTING AND GEOGRAPHIC INFORMATION - Additional Information (Details) - segment	3 Months Ended		6 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2020	Dec. 31, 2019
Segment Reporting and Geographic Information
Number of reportable segments			4
Semiconductor Process Control
Segment Reporting and Geographic Information
Number of operating segments			2
Specialty Semiconductor Process
Segment Reporting and Geographic Information
Number of operating segments			1
PCB, Display and Component Inspection
Segment Reporting and Geographic Information
Number of operating segments			2
Other
Segment Reporting and Geographic Information
Number of operating segments			1
Customer Concentration Risk \| Revenue from Contract with Customer Benchmark \| Customer One
Segment Reporting and Geographic Information
Concentration risk, percentage	14.00%	24.00%	14.00%	21.00%
Customer Concentration Risk \| Revenue from Contract with Customer Benchmark \| Customer Two
Segment Reporting and Geographic Information
Concentration risk, percentage		10.00%	13.00%	11.00%

- Definition

For an entity that discloses a concentration risk in relation to quantitative amount, which serves as the "benchmark" (or denominator) in the equation, this concept represents the concentration percentage derived from the division.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition

Number of operating segments. An operating segment is a component of an enterprise: (a) that engages in business activities from which it may earn revenues and incur expenses (including revenues and expenses relating to transactions with other components of the same enterprise), (b) whose operating results are regularly reviewed by the enterprise's chief operating decision maker to make decisions about resources to be allocated to the segment and assess its performance, and (c) for which discrete financial information is available. An operating segment may engage in business activities for which it has yet to earn revenues, for example, start-up operations may be operating segments before earning revenues.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 280
-SubTopic 10
-Section 50
-Paragraph 18
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- Definition

Number of segments reported by the entity. A reportable segment is a component of an entity for which there is an accounting requirement to report separate financial information on that component in the entity's financial statements.

+ References

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- Definition

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