Condensed Consolidated Balance Sheets (Current Period Unaudited) (Parentheticals) - USD ($) $ in Millions	Jul. 31, 2016	Oct. 31, 2015	[1]
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)	143,739,513	143,292,881
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)	16,010,071	15,676,829
Common stock, shares held in Treasury (in shares)	691,748	691,748
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, liquidation preference	$ 140	$ 140
Preferred stock, outstanding (in shares)	5,600	5,600

[1] Derived from the audited balance sheet as of October 31, 2015.