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

DERIVATIVE INSTRUMENTS AND HEDGING ACTIVITIES - Additional Information (Details)

v3.20.2

DERIVATIVE INSTRUMENTS AND HEDGING ACTIVITIES - Additional Information (Details) - USD ($) $ in Thousands	3 Months Ended		12 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Jun. 30, 2019	Jun. 30, 2015	Jan. 31, 2020
Derivative
Net unrealized gains (losses) arising during the period	$ (918)	$ (742)
Reclassification adjustments increased interest expense on a net basis	54	(1,527)
Treasury lock \| Portion of senior notes
Derivative
Reclassification adjustments increased interest expense on a net basis	300	$ 100
Derivatives designated as hedging instruments \| Senior notes \| Cash flow hedge contracts \| Treasury lock
Derivative
Net unrealized gains (losses) arising during the period			$ (13,600)	$ 7,500
Derivatives designated as hedging instruments \| Senior notes \| Cash flow hedge contracts \| Treasury lock \| 2020 Rate Lock Agreements
Derivative
Derivative, notional amount					$ 350,000
Net unrealized gains (losses) arising during the period	(21,500)
Derivatives designated as hedging instruments \| Senior notes \| Cash flow hedge contracts \| Treasury lock \| Portion of senior notes
Derivative
Unamortized portion of the fair value of derivative contracts	$ 29,800
Maximum \| Derivatives designated as hedging instruments \| Cash flow hedge contracts \| Treasury lock
Derivative
Term of contract	18 months

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Period the derivative contract is outstanding, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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Amount, before tax and reclassification, of gain (loss) from derivative instrument designated and qualifying cash flow hedge included in assessment of hedge effectiveness.

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Amount, before tax, of reclassification of gain (loss) from accumulated other comprehensive income (AOCI) for derivative instrument designated and qualifying as cash flow hedge included in assessment of hedge effectiveness.

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