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

Annual report pursuant to Section 13 and 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								12 Months Ended
	Jun. 30, 2021	Mar. 31, 2021	Dec. 31, 2020	Sep. 30, 2020	Jun. 30, 2020	Mar. 31, 2020	Dec. 31, 2019	Sep. 30, 2019	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2019
Derivative Instruments
Revenues	$ 1,925,471	$ 1,803,773	$ 1,650,870	$ 1,538,620	$ 1,459,593	$ 1,423,964	$ 1,509,453	$ 1,413,414	$ 6,918,734	$ 5,806,424	$ 4,568,904
Costs of Revenues and Operating Expense									4,430,254	4,304,223	3,179,531
Interest Expense									157,328	160,274	124,604
Other Expense (Income), Net									29,302	(2,678)	31,462
Amount of gains (losses) reclassified from AOCI to earnings									(181)	2,072	4,018
Rate lock contracts \| Revenues
Derivative Instruments
Amount of gains (losses) reclassified from AOCI to earnings									0	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
Rate lock contracts \| Costs of Revenues and Operating Expense
Derivative Instruments
Amount of gains (losses) reclassified from AOCI to earnings									0	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
Rate lock contracts \| Interest Expense
Derivative Instruments
Amount of gains (losses) reclassified from AOCI to earnings									(1,116)	(637)	424
Amount of gains (losses) reclassified from accumulated OCI to earnings as a result that a forecasted transaction is no longer probable of occurring											0
Rate lock contracts \| Other Expense (Income), Net
Derivative Instruments
Amount of gains (losses) reclassified from AOCI to earnings									0	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											4
Foreign exchange contracts \| Revenues
Derivative Instruments
Amount of gains (losses) reclassified from AOCI to earnings									920	4,473	4,329
Amount excluded from the assessment of effectiveness recognized in earnings											0
Amount of gains (losses) recognized in earnings									0	0	0
Amount excluded from the assessment of effectiveness recognized in earnings									(536)	(387)
Foreign exchange contracts \| Costs of Revenues and Operating Expense
Derivative Instruments
Amount of gains (losses) reclassified from AOCI to earnings									551	(1,377)	(739)
Amount excluded from the assessment of effectiveness recognized in earnings											0
Amount of gains (losses) recognized in earnings									0	0	0
Amount excluded from the assessment of effectiveness recognized in earnings									0	0
Foreign exchange contracts \| Interest Expense
Derivative Instruments
Amount of gains (losses) reclassified from AOCI to earnings									0	0	0
Amount excluded from the assessment of effectiveness recognized in earnings											0
Amount of gains (losses) recognized in earnings									0	0	0
Amount excluded from the assessment of effectiveness recognized in earnings									0	0
Foreign exchange contracts \| Other Expense (Income), Net
Derivative Instruments
Amount of gains (losses) reclassified from AOCI to earnings									0	0	0
Amount excluded from the assessment of effectiveness recognized in earnings											(323)
Amount of gains (losses) recognized in earnings									670	1,990	$ (23)
Amount excluded from the assessment of effectiveness recognized in earnings									$ 1,216	$ 0