KLA Corporation Annual report pursuant to Section 13 and 15(d)

Derivative Instruments and Hedging Activities - Schedule of Notional Amounts (Details) - USD ($) $ in Thousands	12 Months Ended
	Jun. 30, 2019	Jun. 30, 2018
Derivative
Remaining maturity (maximum)	10 months	10 months
Derivatives designated as hedging instruments \| Purchase \| Other foreign currency hedge contracts
Derivative
Derivative, notional amount	$ 257,614	$ 130,442
Derivatives designated as hedging instruments \| Purchase \| Cash flow hedge contracts- foreign currency
Derivative
Derivative, notional amount	31,108	8,116
Derivatives designated as hedging instruments \| Sell \| Other foreign currency hedge contracts
Derivative
Derivative, notional amount	273,061	154,442
Derivatives designated as hedging instruments \| Sell \| Cash flow hedge contracts- foreign currency
Derivative
Derivative, notional amount	$ 113,226	$ 115,032