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Condensed Consolidated Balance Sheets (Current Period Unaudited) (Parentheticals) - USD ($)
$ in Millions
Jul. 31, 2018
Oct. 31, 2017
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) 144,523,768 144,046,073
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) 16,243,454 15,999,355
Common stock, shares held in Treasury (in shares) 691,748 691,748