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Net Income per Share (Tables) | 6 Months Ended
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Apr. 30, 2017
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 April 30, |  | Six Months Ended April 30,
| 2017 |  | 2016 |  | 2017 |  | 2016
| (in thousands, except per share amounts)
Numerator: |  |  |  |  |  |  |
Net income | $ | 53,306 |  |  | $ | 69,376 |  |  | $ | 139,894 |  |  | $ | 129,411 |
Denominator: |  |  |  |  |  |  |
Weighted-average common shares for basic net income per share | 150,384 |  |  | 152,250 |  |  | 150,583 |  |  | 152,609 |
Dilutive effect of potential common shares from equity-based compensation | 4,477 |  |  | 2,286 |  |  | 4,171 |  |  | 2,312 |
Weighted-average common shares for diluted net income per share | 154,861 |  |  | 154,536 |  |  | 154,754 |  |  | 154,921 |
Net income per share: |  |  |  |  |  |  |
Basic | $ | 0.35 |  |  | $ | 0.46 |  |  | $ | 0.93 |  |  | $ | 0.85 |
Diluted | $ | 0.34 |  |  | $ | 0.45 |  |  | $ | 0.90 |  |  | $ | 0.84 |
Anti-dilutive employee stock-based awards excluded(1) | 948 |  |  | 2,886 |  |  | 738 |  |  | 2,649 |
(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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