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, 2018	Jun. 30, 2017
Derivatives designated as hedging instruments \| Purchase \| Other foreign currency hedge contracts
Derivative
Derivative, notional amount	$ 130,442	$ 165,563
Derivatives designated as hedging instruments \| Purchase \| Cash flow hedge contracts- foreign currency \| Foreign exchange contracts
Derivative
Derivative, notional amount	8,116	19,305
Derivatives designated as hedging instruments \| Sell \| Other foreign currency hedge contracts
Derivative
Derivative, notional amount	154,442	118,504
Derivatives designated as hedging instruments \| Sell \| Cash flow hedge contracts- foreign currency \| Foreign exchange contracts
Derivative
Derivative, notional amount	$ 115,032	$ 128,672
Maximum
Derivative
Remaining maturity	10 months	10 months