Earnings Per Share (Details) (USD $)	3 Months Ended		6 Months Ended
	Apr. 30, 2014	Apr. 30, 2013	Apr. 30, 2014	Apr. 30, 2013
Earnings Per Share Reconciliation Of Basic And Diluted
Net Income	$ 62,540,000	$ 55,790,000	$ 160,112,000	$ 141,713,000
Average Shares Of Common Stock Outstanding For Basic Earnings Per Share	77,982,000	75,463,000	77,477,000	73,884,000
Contingently Issuable Shares Under Incentive Compensation Plans	309,000	314,000	325,000	333,000
Contingently Issuable Shares Under Forward Sale Agreements	0	127,000	0	84,000
Average Shares Of Dilutive Stock	78,291,000	75,904,000	77,802,000	74,301,000
Earnings Per Share of Common Stock
Earnings Per Share Basic	$ 0.80	$ 0.74	$ 2.07	$ 1.92
Earnings Per Share Diluted	$ 0.80	$ 0.74	$ 2.06	$ 1.91