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Consolidated Balance Sheets Parenthetical (Parentheticals) (USD $)
In Millions, except Per Share data, unless otherwise specified
Dec. 31, 2013
Dec. 31, 2012
Series A Preferred Stock [Member]
    
Preferred stock, par or stated value per share $ 0.01 $ 0.01
Preferred stock, shares authorized 0.1 0.1
Preferred stock, shares outstanding 0 0
Preferred Stock [Member]
    
Preferred stock, par or stated value per share $ 0.01 $ 0.01
Preferred stock, shares authorized 10.0 10.0
Preferred stock, shares outstanding 0 0
Common Stock [Member]
    
Common stock, par or stated value per share $ 0.01 $ 0.01
Common stock, shares authorized 150.0 150.0
Common stock, shares issued 81.6 80.9
Treasury stock, shares 6.0 6.0
Series Common Stock [Member]
    
Common stock, par or stated value per share $ 0.01 $ 0.01
Common stock, shares authorized 40.0 40.0
Common stock, shares, outstanding 0 0