CONSOLIDATED STATEMENT OF STOCKHOLDERS' EQUITY (UNAUDITED) (Parenthetical) (USD $)	6 Months Ended
	Apr. 30, 2015
Common Stock [Member]
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Common stock, dividends per share declared (in dollars per share)	$ 0.4500
Class A Common Stock [Member]
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Common stock, dividends per share declared (in dollars per share)	$ 0.5100
7.125% Series F Cumulative Preferred Stock [Member]
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Preferred stock, dividend rate (in hundredths)	7.125%
6.75% Series G Cumulative Preferred Stock [Member]
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Preferred stock, dividend rate (in hundredths)	6.75%
Preferred Stock [Member] | 7.125% Series F Cumulative Preferred Stock [Member]
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Preferred stock, dividend rate (in hundredths)	7.125%
Preferred Stock [Member] | 6.75% Series G Cumulative Preferred Stock [Member]
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Preferred stock, dividend rate (in hundredths)	6.75%
Common Stock [Member] | Common Stock [Member]
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Common stock, dividends per share declared (in dollars per share)	$ 0.450
Common Stock [Member] | Class A Common Stock [Member]
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Common stock, dividends per share declared (in dollars per share)	$ 0.510