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NET INCOME PER SHARE
 12 Months Ended
Jun. 30, 2021
Earnings Per Share [Abstract]  
NET INCOME PER SHARE NET INCOME PER SHAREBasic net income per share is calculated by dividing net income available to common stockholders by the weighted-average number of common shares outstanding during the period. Diluted net income per share is calculated by using the weighted-average number of common shares outstanding during the period, increased to include the number of additional
shares of common stock that would have been outstanding if the shares of common stock underlying our outstanding dilutive RSUs had been issued. The dilutive effect of outstanding RSUs is reflected in diluted net income per share by application of the treasury stock method.
The following table sets forth the computation of basic and diluted net income per share attributable to KLA:
(In thousands, except per share amounts)Year Ended June 30,
202120202019
Numerator:
Net income attributable to KLA$2,078,292 $1,216,785 $1,175,617 
Denominator:
Weighted-average shares-basic, excluding unvested restricted stock units154,086 156,797 156,053 
Effect of dilutive restricted stock units and options1,351 1,208 896 
Weighted-average shares-diluted155,437 158,005 156,949 
Basic net income per share attributable to KLA$13.49 $7.76 $7.53 
Diluted net income per share attributable to KLA$13.37 $7.70 $7.49 
Anti-dilutive securities excluded from the computation of diluted net income per share11 22 227