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Consolidated Statements of Stockholders' Equity (Parenthetical) - $ / shares | 12 Months Ended
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Oct. 31, 2020 | Oct. 31, 2019 | Oct. 31, 2018
Statement of Stockholders' Equity [Abstract] |  |  |
Cash dividends paid on common stock (in dollars per share) | $ 1.00 | $ 0.90 | $ 0.80
Issuance of options (in shares) | 870,011 | 1,544,962 | 1,495,367
Purchase of shares of common stock (in shares) | 29,422 | 403,532 | 2,777,687

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