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Net Income per Share (Tables) | 9 Months Ended
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Jul. 31, 2018
Earnings Per Share [Abstract] |
Reconciliation of Weighted-Average Common Shares Used to Calculate Net Income Per Share | 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 July 31, |  | Nine Months Ended July 31,
| 2018 |  | 2017 |  | 2018 |  | 2017
| (in thousands, except per share amounts)
Numerator: |  |  |  |  |  |  |
Net income | $ | 79,409 |  |  | $ | 116,751 |  |  | $ | 178,190 |  |  | $ | 256,645 |
Denominator: |  |  |  |  |  |  |
Weighted-average common shares for basic net income per share | 148,490 |  |  | 150,214 |  |  | 148,760 |  |  | 150,460 |
Dilutive effect of potential common shares from equity-based compensation | 4,124 |  |  | 4,469 |  |  | 4,358 |  |  | 4,327 |
Weighted-average common shares for diluted net income per share | 152,614 |  |  | 154,683 |  |  | 153,118 |  |  | 154,787 |
Net income per share: |  |  |  |  |  |  |
Basic | $ | 0.53 |  |  | $ | 0.78 |  |  | $ | 1.20 |  |  | $ | 1.71 |
Diluted | $ | 0.52 |  |  | $ | 0.75 |  |  | $ | 1.16 |  |  | $ | 1.66 |
Anti-dilutive employee stock-based awards excluded(1) | 1,063 |  |  | 492 |  |  | 774 |  |  | 1,186 |
(1) | These employee stock-based awards 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 Tabular disclosure of the weighted average number of shares used in calculating basic net earnings per share (or unit) and diluted earnings per share (or unit). + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6371337&loc=d3e3550-109257 + Details
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