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

Derivative Instruments and Hedging Activities - Schedule of Notional Amount (Details) - Derivatives designated as hedging instruments - USD ($) $ in Thousands	6 Months Ended	12 Months Ended
	Dec. 31, 2018	Jun. 30, 2018
Purchase \| Other foreign currency hedge contracts
Derivative
Derivative, notional amount	$ 163,758	$ 130,442
Purchase \| Cash flow hedge contracts - foreign currency
Derivative
Derivative, notional amount	777	8,116
Sell \| Other foreign currency hedge contracts
Derivative
Derivative, notional amount	173,793	154,442
Sell \| Cash flow hedge contracts - foreign currency
Derivative
Derivative, notional amount	$ 84,302	$ 115,032
Maximum
Derivative
Remaining maturity	10 months	10 months