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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) (Stock Options [Member], USD $)
In Thousands, except Per Share data, unless otherwise specified
12 Months Ended
Oct. 31, 2012
Oct. 31, 2011
Oct. 31, 2010
Stock Options [Member]
     
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]      
Numbers of stock option shares excluded 24 631 3,443
Lower, Range of exercise prices $ 80.51 $ 68.66 $ 41.44
Upper, Range of exercise prices $ 87.22 $ 80.51 $ 80.51