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

Restructuring Charges - Additional Information (Details) - USD ($) $成千上万	3 Months Ended		9个月结束
	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
研究与开发
Restructuring Cost and Reserve [Line Items]
Restructuring costs				1,500
Selling general and administrative
Restructuring Cost and Reserve [Line Items]
Restructuring costs				$ 3,700