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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 6 Months Ended
Apr. 30, 2012
Apr. 30, 2011
Apr. 30, 2012
Apr. 30, 2011
Earnings Per Share [Abstract]        
Numbers of stock option shares excluded 10 1,232 99 1,255
Lower, Range of exercise prices   $ 67.65 $ 73.40 $ 62.60
Upper, Range of exercise prices $ 80.51 $ 80.51 $ 80.51 $ 80.51