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

Derivative Instruments and Hedging Activities - Derivative Instruments Gain (Loss) (Details)

Derivative Instruments and Hedging Activities - Derivative Instruments Gain (Loss) (Details) - USD ($) $ in Thousands	12 Months Ended
	Jun. 30, 2015	Jun. 30, 2014
Derivative [Line Items]
Gains in accumulated OCI on derivatives (effective portion)	$ 13,745	$ 1,641
Gains reclassified from accumulated OCI into income (effective portion):	(6,615)	(4,145)
Designated as Hedging Instrument
Derivative [Line Items]
Gains reclassified from accumulated OCI into income (effective portion):	6,615	4,145
Designated as Hedging Instrument \| Other Comprehensive Income (Loss)
Derivative [Line Items]
Gains in accumulated OCI on derivatives (effective portion)	13,745	1,641
Designated as Hedging Instrument \| Revenues
Derivative [Line Items]
Gains reclassified from accumulated OCI into income (effective portion):	7,615	3,851
Designated as Hedging Instrument \| Costs of revenues
Derivative [Line Items]
Gains reclassified from accumulated OCI into income (effective portion):	(1,503)	294
Designated as Hedging Instrument \| Interest Expense
Derivative [Line Items]
Gains reclassified from accumulated OCI into income (effective portion):	503	0
Designated as Hedging Instrument \| Interest income and other, net
Derivative [Line Items]
Gains recognized in income on derivatives (ineffective portion and amount excluded from effectiveness testing)	243	18
Not Designated as Hedging Instrument \| Interest income and other, net
Derivative [Line Items]
Gains recognized in income	13,976	2,856
Not Designated as Hedging Instrument \| Gain (Loss) On Extinguishment Of Debt And Other, Net
Derivative [Line Items]
Gains recognized in income	$ (1,180)	$ 0