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

Derivative Instruments and Hedging Activities - Derivative Instrument Gain (Loss) (Details) - USD ($) $ in Thousands	3 Months Ended
	Sep. 30, 2016	Sep. 30, 2015
Derivative
Losses in accumulated OCI on derivatives (effective portion)	$ (1,838)	$ (1,861)
Gains (losses) reclassified from accumulated OCI into income (effective portion)	(1,379)	402
Derivatives Designated as Hedging Instruments
Derivative
Gains (losses) reclassified from accumulated OCI into income (effective portion)	(1,379)	402
Derivatives Designated as Hedging Instruments \| Accumulated OCI
Derivative
Losses in accumulated OCI on derivatives (effective portion)	(1,838)	(1,861)
Derivatives Designated as Hedging Instruments \| Revenues
Derivative
Gains (losses) reclassified from accumulated OCI into income (effective portion)	(1,481)	685
Derivatives Designated as Hedging Instruments \| Costs of revenues
Derivative
Gains (losses) reclassified from accumulated OCI into income (effective portion)	(87)	(472)
Derivatives Designated as Hedging Instruments \| Interest expense
Derivative
Gains (losses) reclassified from accumulated OCI into income (effective portion)	189	189
Derivatives Designated as Hedging Instruments \| Other expense (income), net
Derivative
Losses recognized in income on derivatives (ineffective portion and amount excluded from effectiveness testing)	(11)	(126)
Derivatives Not Designated as Hedging Instruments \| Other expense (income), net
Derivative
Losses recognized in income	$ (164)	$ (6,382)