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EARNINGS PER SHARE CALCULATION
 12 Months Ended
Oct. 30, 2021
Earnings Per Share [Abstract]  
EARNINGS PER SHARE CALCULATION EARNINGS PER SHARE CALCULATION
Basic net income per common share (“Basic EPS”) is computed using the weighted average number of common shares outstanding. Diluted net income per potential common share (“Diluted EPS”) is computed using the weighted average number of the following, in each case, to the extent the effect is not anti-dilutive: (i) common shares outstanding, (ii) shares issuable upon vesting of stock unit awards; and (iii) shares issuable under Ciena’s employee stock purchase plan and upon exercise of outstanding stock options, using the treasury stock method.
The following table presents the calculation of basic and diluted EPS (in thousands except per share amounts):
 Year Ended
 October 30, 2021October 31, 2020November 2, 2019
Net income$500,196 $361,291 $253,434 
Basic weighted average shares outstanding155,279 154,287 155,720 
Effect of dilutive potential common shares1,464 1,668 1,892 
Diluted weighted average shares156,743 155,955 157,612 
Basic EPS$3.22 $2.34 $1.63 
Diluted EPS$3.19 $2.32 $1.61 
Antidilutive employee share-based awards, excluded110263234