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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) (USD $)
In Thousands, except Per Share data, unless otherwise specified
3 Months Ended 9 Months Ended
Jul. 31, 2012
Jul. 31, 2011
Jul. 31, 2012
Jul. 31, 2011
Earnings Per Share [Abstract]        
Numbers of stock option shares excluded 1 10 12 1,135
Lower, Range of exercise prices $ 87.22 $ 80.51 $ 76.70 $ 66.15
Upper, Range of exercise prices $ 87.22 $ 80.51 $ 87.22 $ 80.51