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

Equity and Long-Term Incentive Compensation Plans - Cash Dividends (Details) - USD ($) $ / shares in Units, $ in Thousands			3 Months Ended		9 Months Ended
	Feb. 02, 2017	Nov. 19, 2014	Mar. 31, 2017	Mar. 31, 2016	Mar. 31, 2017	Mar. 31, 2016	Jun. 30, 2016	Dec. 31, 2014
Dividends Payable
Cash dividends declared (in dollars per share)			$ 0.54	$ 0.52	$ 1.6	$ 1.56
Payment of dividends					$ 259,356	$ 265,163
Dividends payable			$ 12,643	$ 18,827	12,643	18,827
Restricted stock unit, Performance-based and Service-based
Dividends Payable
Dividends payable			12,600		12,600
Regular cash dividend
Dividends Payable
Cash dividends declared (in dollars per share)	$ 0.54
Regular cash dividend \| Restricted stock unit, Performance-based and Service-based
Dividends Payable
Dividends payable			3,900		3,900		$ 2,700
Regular cash dividend \| Additional paid-in capital
Dividends Payable
Payment of dividends			84,700	81,000	250,800	243,500
Special cash dividend
Dividends Payable
Cash dividends declared (in dollars per share)		$ 16.50
Cash dividends paid		$ 2,760,000
Special cash dividend \| Restricted stock unit, Performance-based and Service-based
Dividends Payable
Dividends payable			8,700		8,700		$ 16,900	$ 43,000
Cash dividends paid			$ 900	$ 1,200	$ 8,600	$ 21,700