Condensed Consolidated Balance Sheets (Current Period Unaudited) (Parentheticals) - USD ($) $ in Millions	Apr. 30, 2017	Oct. 31, 2016	[1]
Preferred stock, par value (in dollars per share)	$ 0.01	$ 0.01
Preferred stock, shares authorized (in shares)	100,000	100,000
Preferred stock, shares issued (in shares)	5,600	5,600
Preferred stock, shares outstanding (in shares)	5,600	5,600
Preferred stock, liquidation preference	$ 140	$ 140
Common Class A [Member]
Common stock, par value (in dollars per share)	$ 0.01	$ 0.01
Common stock, shares authorized (in shares)	400,000,000	400,000,000
Common stock, shares issued (in shares)	143,876,014	143,806,775
Common stock, shares held in Treasury (in shares)	11,760,763	11,760,763
Common Class B [Member]
Common stock, par value (in dollars per share)	$ 0.01	$ 0.01
Common stock, shares authorized (in shares)	60,000,000	60,000,000
Common stock, shares issued (in shares)	15,942,809	15,942,809
Common stock, shares held in Treasury (in shares)	691,748	691,748

[1] Derived from the audited balance sheet as of October 31, 2016. See notes to condensed consolidated financial statements (unaudited).