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

DERIVATIVE INSTRUMENTS AND HEDGING ACTIVITIES - Schedule of Notional Amount (Details) - USD ($) $ in Thousands	3 Months Ended	12 Months Ended
	Sep. 30, 2021	Jun. 30, 2021
Derivative
Remaining maturity	7 months	7 months
Derivatives designated as hedging instruments \| Purchase \| Other foreign currency hedge contracts
Derivative
Derivative, notional amount	$ 274,334	$ 264,292
Derivatives designated as hedging instruments \| Purchase \| Cash Flow Hedging \| Foreign exchange contracts
Derivative
Derivative, notional amount	11,456	12,550
Derivatives designated as hedging instruments \| Sell \| Other foreign currency hedge contracts
Derivative
Derivative, notional amount	248,813	278,635
Derivatives designated as hedging instruments \| Sell \| Cash Flow Hedging \| Foreign exchange contracts
Derivative
Derivative, notional amount	129,603	134,845
Derivatives designated as hedging instruments \| Sell \| Net Investment Hedging \| Foreign exchange contracts
Derivative
Derivative, notional amount	$ 66,848	$ 66,848