KLA Corporation Annual report [Section 13 and 15(d), not S-K Item 405]

SEGMENT REPORTING AND GEOGRAPHIC INFORMATION - Long-lived Assets by Geographic Region (Details) - USD ($) $ in Thousands	Jun. 30, 2026	Jun. 30, 2025
Segment Reporting, Entity-Wide Information Not Provided as Part of Reportable Segment, Geographical Area, Revenue and Long-Lived Asset [Line Items]
Land, property and equipment, net	$ 1,380,550	$ 1,252,775
U.S.
Segment Reporting, Entity-Wide Information Not Provided as Part of Reportable Segment, Geographical Area, Revenue and Long-Lived Asset [Line Items]
Land, property and equipment, net	771,331	728,162
Europe
Segment Reporting, Entity-Wide Information Not Provided as Part of Reportable Segment, Geographical Area, Revenue and Long-Lived Asset [Line Items]
Land, property and equipment, net	289,614	253,848
Singapore
Segment Reporting, Entity-Wide Information Not Provided as Part of Reportable Segment, Geographical Area, Revenue and Long-Lived Asset [Line Items]
Land, property and equipment, net	191,534	153,052
Rest of Asia
Segment Reporting, Entity-Wide Information Not Provided as Part of Reportable Segment, Geographical Area, Revenue and Long-Lived Asset [Line Items]
Land, property and equipment, net	73,110	49,109
Israel
Segment Reporting, Entity-Wide Information Not Provided as Part of Reportable Segment, Geographical Area, Revenue and Long-Lived Asset [Line Items]
Land, property and equipment, net	$ 54,961	$ 68,604