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

Restructuring Charges - Additional Information (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Mar. 31, 2017	Mar. 31, 2016	Mar. 31, 2017	Mar. 31, 2016
Restructuring Cost and Reserve [Line Items]
Restructuring costs	$ 0	$ 125	$ 0	$ 8,583
Costs of revenue
Restructuring Cost and Reserve [Line Items]
Restructuring costs		$ 100		3,400
Research and development
Restructuring Cost and Reserve [Line Items]
Restructuring costs				1,500
Selling general and administrative
Restructuring Cost and Reserve [Line Items]
Restructuring costs				$ 3,700