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, 2015	Apr. 30, 2014	Apr. 30, 2015	Apr. 30, 2014
Stock Options [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Numbers of stock option shares excluded	123	138	123	164
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range, Lower Range Limit	$ 162.28	$ 119.89	$ 162.28	$ 119.89
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range, Upper Range Limit	$ 162.28	$ 119.89	$ 162.28	$ 128.35
Restricted Stock Units (RSUs) [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Numbers of stock option shares excluded	1	5	1	6