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Stockholders' Equity (Tables) | 12 Months Ended
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Oct. 31, 2017
Stock Repurchase Program [Abstract] |
Stock repurchase program | The following table provides information about the share repurchase programs for the fiscal years ended October 31, 2017, 2016, and 2015:
| 2017 |  | 2016 |  | 2015
Number of shares purchased (in thousands) | 7,694 |  |  | 13,652 |  |  | 1,665 |
Average price per share | $ | 37.81 |  |  | $ | 28.77 |  |  | $ | 34.17 |
Remaining authorization at October 31 (in thousands) | 8,144 |  |  | 15,838 |  |  | 18,535 |

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- Definition Tabular disclosure of treasury stock, including, but not limited to, average cost per share, description of share repurchase program, shares repurchased, shares held for each class of treasury stock. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 30 -Section 50 -Paragraph 4 -URI http://asc.fasb.org/extlink&oid=6405834&loc=d3e23315-112656 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 30 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6405834&loc=d3e23285-112656 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 30 -Section 45 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6405813&loc=d3e23239-112655 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 30 -Section 50 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=6405834&loc=d3e23309-112656 + Details
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