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Net Income per Share (Tables) | 6 Months Ended
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Apr. 30, 2015
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,
| 2015 |  | 2014 |  | 2015 |  | 2014
| (in thousands)
Numerator: |  |  |  |  |  |  |
Net income | $ | 55,596 |  |  | $ | 63,317 |  |  | $ | 120,785 |  |  | $ | 131,013 |
Denominator: |  |  |  |  |  |  |
Weighted-average common shares for basic net income per share | 154,515 |  |  | 154,572 |  |  | 154,486 |  |  | 154,319 |
Dilutive effect of potential common shares from equity-based compensation | 2,968 |  |  | 2,510 |  |  | 2,923 |  |  | 2,667 |
Weighted-average common shares for diluted net income per share | 157,483 |  |  | 157,082 |  |  | 157,409 |  |  | 156,986 |
Net income per share: |  |  |  |  |  |  |
Basic | $ | 0.36 |  |  | $ | 0.41 |  |  | $ | 0.78 |  |  | $ | 0.85 |
Diluted | $ | 0.35 |  |  | $ | 0.40 |  |  | $ | 0.77 |  |  | $ | 0.83 |
Anti-dilutive employee stock-based awards excluded(1) | 1,190 |  |  | 1,998 |  |  | 1,859 |  |  | 1,674 |
(1) | These stock options and unvested restricted stock units and restricted stock awards were anti-dilutive for the respective periods and are excluded in calculating diluted net income per share. While such awards were antidilutive 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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