Earnings Per Share (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended
	Jan. 31, 2016	Jan. 31, 2015	Dec. 31, 2015
Earnings Per Share [Abstract]
Net Income	$ 97,790	$ 92,978
Average shares of common stock outstanding for basic earnings per share	80,963,000	78,620,000
Contingently issuable shares under ICP awards	117,000	325,000
Contingently issuable restricted nonvested shares under accelerated ICP awards	182,000	0
Contingently issuable shares under FSAs	4,000	0
Average shares of dilutive stock	81,266,000	78,945,000
Basic (usd per share)	$ 1.21	$ 1.18
Diluted (usd per share)	$ 1.20	$ 1.18
Stock Compensation Plan
Employee Share Based Plans Details [Line Items]
Stock Outstanding, Shares, Restricted, Nonvested Stock Award			181,944
Stock Outstanding, Shares, Restricted Stock Awards, Dividend Reinvestment	1,092