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

Quarterly report pursuant to Section 13 or 15(d)

Derivative Instruments and Hedging Activities - Locations and Amounts of Designated and Non-Designated Derivative's Gains and Losses (Details)

Derivative Instruments and Hedging Activities - Locations and Amounts of Designated and Non-Designated Derivative's Gains and Losses (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Mar. 31, 2019	Mar. 31, 2018	Mar. 31, 2019	Mar. 31, 2018
Derivative Instruments
Revenues	$ 1,097,311	$ 1,021,294	$ 3,310,469	$ 2,966,697
Costs of revenues	486,945	368,356	1,276,592	1,068,475
Interest expense	31,187	28,119	84,087	86,067
Other expense (income), net	(9,282)	(7,640)	(28,535)	(19,847)
Amount of gains (losses) reclassified from accumulated OCI to earnings	946		3,719
Amount of gains (losses) reclassified from accumulated OCI to earnings		694		3,775
Revenues
Derivative Instruments
Amount of gains (losses) reclassified from accumulated OCI to earnings as a result that a forecasted transaction is no longer probable of occurring		0		0
Costs of revenues
Derivative Instruments
Amount of gains (losses) reclassified from accumulated OCI to earnings as a result that a forecasted transaction is no longer probable of occurring		0		0
Interest expense
Derivative Instruments
Amount of gains (losses) reclassified from accumulated OCI to earnings as a result that a forecasted transaction is no longer probable of occurring		0		0
Other expense (income), net
Derivative Instruments
Amount of gains (losses) reclassified from accumulated OCI to earnings as a result that a forecasted transaction is no longer probable of occurring		0		0
Rate lock contracts \| Revenues
Derivative Instruments
Amount of gains (losses) reclassified from accumulated OCI to earnings	0		0
Amount of gains (losses) reclassified from accumulated OCI to earnings as a result that a forecasted transaction is no longer probable of occurring	0		0
Rate lock contracts \| Costs of revenues
Derivative Instruments
Amount of gains (losses) reclassified from accumulated OCI to earnings	0		0
Amount of gains (losses) reclassified from accumulated OCI to earnings as a result that a forecasted transaction is no longer probable of occurring	0		0
Rate lock contracts \| Interest expense
Derivative Instruments
Amount of gains (losses) reclassified from accumulated OCI to earnings	150		527
Amount of gains (losses) reclassified from accumulated OCI to earnings as a result that a forecasted transaction is no longer probable of occurring	0		0
Rate lock contracts \| Other expense (income), net
Derivative Instruments
Amount of gains (losses) reclassified from accumulated OCI to earnings	0		0
Amount of gains (losses) reclassified from accumulated OCI to earnings as a result that a forecasted transaction is no longer probable of occurring	0		0
Foreign exchange contracts \| Revenues
Derivative Instruments
Amount of gains (losses) reclassified from accumulated OCI to earnings	655		3,343
Amount of gains (losses) reclassified from accumulated OCI to earnings		(65)		1,300
Amount excluded from the assessment of effectiveness recognized in earnings based on an amortization approach	0		80
Amount excluded from the assessment of effectiveness recognized in earnings based on an amortization approach		0		0
Amount excluded from the assessment of effectiveness	0	0	0	0
Amount of gains (losses) recognized in earnings	0		0
Foreign exchange contracts \| Costs of revenues
Derivative Instruments
Amount of gains (losses) reclassified from accumulated OCI to earnings	(17)		(309)
Amount of gains (losses) reclassified from accumulated OCI to earnings		570		1,908
Amount excluded from the assessment of effectiveness recognized in earnings based on an amortization approach	0		(8)
Amount excluded from the assessment of effectiveness recognized in earnings based on an amortization approach		0		0
Amount excluded from the assessment of effectiveness	0	0	0	0
Amount of gains (losses) recognized in earnings	0		0
Foreign exchange contracts \| Interest expense
Derivative Instruments
Amount of gains (losses) reclassified from accumulated OCI to earnings	0		0
Amount of gains (losses) reclassified from accumulated OCI to earnings		189		567
Amount excluded from the assessment of effectiveness recognized in earnings based on an amortization approach	0		0
Amount excluded from the assessment of effectiveness recognized in earnings based on an amortization approach		0		0
Amount excluded from the assessment of effectiveness	0	0	0	0
Amount of gains (losses) recognized in earnings	0		0
Foreign exchange contracts \| Other expense (income), net
Derivative Instruments
Amount of gains (losses) reclassified from accumulated OCI to earnings	158		158
Amount of gains (losses) reclassified from accumulated OCI to earnings		0		0
Amount excluded from the assessment of effectiveness recognized in earnings based on an amortization approach	0		0
Amount excluded from the assessment of effectiveness recognized in earnings based on an amortization approach		0		0
Amount excluded from the assessment of effectiveness	(121)	(374)	(208)	(603)
Amount of gains (losses) recognized in earnings	$ 513		$ 576
Derivatives designated as hedging instruments \| Rate lock contracts \| Revenues
Derivative Instruments
Amount of gains (losses) reclassified from accumulated OCI to earnings		0		0
Derivatives designated as hedging instruments \| Rate lock contracts \| Costs of revenues
Derivative Instruments
Amount of gains (losses) reclassified from accumulated OCI to earnings		0		0
Derivatives designated as hedging instruments \| Rate lock contracts \| Interest expense
Derivative Instruments
Amount of gains (losses) reclassified from accumulated OCI to earnings		0		0
Derivatives designated as hedging instruments \| Rate lock contracts \| Other expense (income), net
Derivative Instruments
Amount of gains (losses) reclassified from accumulated OCI to earnings		0		0
Derivatives not designated as hedging instruments \| Foreign exchange contracts \| Revenues
Derivative Instruments
Amount of gains (losses) recognized in earnings		0		0
Derivatives not designated as hedging instruments \| Foreign exchange contracts \| Costs of revenues
Derivative Instruments
Amount of gains (losses) recognized in earnings		0		0
Derivatives not designated as hedging instruments \| Foreign exchange contracts \| Interest expense
Derivative Instruments
Amount of gains (losses) recognized in earnings		0		0
Derivatives not designated as hedging instruments \| Foreign exchange contracts \| Other expense (income), net
Derivative Instruments
Amount of gains (losses) recognized in earnings		$ (7,484)		$ (3,808)