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Earnings Per Share (Schedule of Stock Options to Purchase Common Stock Not Included in Diluted Net Income per Share Calculation) (Details) - $ / shares
shares in Thousands
12 Months Ended
Oct. 31, 2017
Oct. 31, 2016
Oct. 31, 2015
Stock Options [Member]      
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]      
Numbers of stock option shares excluded 90 392 123
Lower, Range of exercise prices $ 175.31 $ 131.60 $ 162.28
Upper, Range of exercise prices $ 175.31 $ 162.69 $ 162.28
Restricted Stock Units (RSUs) [Member]      
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]      
Numbers of stock option shares excluded 3 2 1