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Net Income per Share | 3 Months Ended
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Jan. 31, 2021
Earnings Per Share [Abstract] |
Net Income per Share | Net Income Per ShareThe Company computes basic net income per share 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 reflects the dilution from potential common shares outstanding such as stock options and unvested restricted stock units and awards during the period using the treasury stock method. The table below reconciles the weighted average common shares used to calculate basic net income per share with the weighted average common shares used to calculate diluted net income per share:
| Three Months Ended January 31, |  |
| 2021 |  | 2020 |  |  |  |
| (in thousands, except per share amounts)
Numerator: |  |  |  |  |  |  |
Net income attributed to Synopsys | $ | 162,345 |  |  | $ | 104,061 |  |  |  |  |
Denominator: |  |  |  |  |  |  |
Weighted average common shares for basic net income per share | 152,498 |  |  | 150,244 |  |  |  |  |
Dilutive effect of common share equivalents from equity-based compensation | 4,779 |  |  | 4,260 |  |  |  |  |
Weighted average common shares for diluted net income per share | 157,277 |  |  | 154,504 |  |  |  |  |
Net income per share: |  |  |  |  |  |  |
Basic | $ | 1.06 |  |  | $ | 0.69 |  |  |  |  |
Diluted | $ | 1.03 |  |  | $ | 0.67 |  |  |  |  |
Anti-dilutive employee stock-based awards excluded(1) | 334 |  |  | 414 |  |  |  |  |
(1)These stock options and unvested restricted stock units were anti-dilutive for the respective periods and are excluded in calculating diluted net income per share. While such awards were anti-dilutive for the respective periods, they could be dilutive in the future.

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- Definition The entire disclosure for earnings per share. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 50 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=109243012&loc=SL65017193-207537 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=6371337&loc=d3e3550-109257 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -URI http://asc.fasb.org/topic&trid=2144383 Reference 4: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6371337&loc=d3e3630-109257 + Details
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