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CONDENSED CONSOLIDATED BALANCE SHEET (Unaudited) (Parenthetical) - $ / shares
Jul. 31, 2016
Oct. 31, 2015
Stockholders' Equity Attributable to Parent [Abstract]    
Preferred stock, par value (in dollars per share) $ 0.01 $ 0.01
Preferred stock, shares authorized (in shares) 100,000,000 100,000,000
Preferred stock, issued and outstanding (in shares) 0 0
Common stock, par value (in dollars per share) $ 0.01 $ 0.01
Common stock, shares authorized (in shares) 1,000,000,000 1,000,000,000
Common Stock, Shares, Issued 172,000,000 170,000,000
Treasury Stock, Shares 2,300,000 0