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Summary of Significant Accounting Policies and Related Data - Net Earnings Per Share (Details) - shares
shares in Thousands
12 Months Ended
Oct. 31, 2019
Oct. 31, 2018
Oct. 31, 2017
Basic      
Weighted-average number of shares of common stock (in shares) 106,762 106,356 108,299
Assumed issuance of contingent shares (in shares) 11 13 13
Weighted-average number of shares of common stock and assumed issuance of contingent shares (in shares) 106,773 106,369 108,312
Diluted      
Weighted-average number of shares of common stock and assumed issuance of contingent shares (in shares) 106,773 106,369 108,312
Effect of dilutive securities (in shares) 1,317 2,288 2,940
Weighted-average number of shares of common stock, assumed issuance of contingent shares, and effect of dilutive securities (in shares) 108,090 108,657 111,252
Antidilutive securities excluded from computation of earnings per share, amount (in shares) 716,343 424,089 353,897