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	3 Months Ended		6 Months Ended
	Apr. 30, 2016	Apr. 30, 2015	Apr. 30, 2016	Apr. 30, 2015
Stock Options [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Numbers of stock option shares excluded	537	123	537	123
Range of exercise prices, lower limit	$ 131.60	$ 162.28	$ 131.60	$ 162.28
Range of exercise prices, upper limit	$ 162.69	$ 162.28	$ 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	7	1	2	1