Fair Value (Tables)
9 Months Ended
Sep. 30, 2011
Fair value of financial instruments [Abstract] 
Available For Sale Securities [Text Block]
        September 30,  December 31, 
 (In millions)    2011  2010 
             
 Cost        
  Mutual funds $  16.7   16.9 
  Non-U.S. debt securities    -   3.6 
  Equity securities    -   3.7 
   Total   $  16.7   24.2 
             
 Gross Unrealized Gains        
  Mutual funds $  2.9   3.4 
  Non-U.S. debt securities    -   - 
  Equity securities    -   2.2 
   Total   $  2.9   5.6 
             
 Gross Unrealized Losses        
  Mutual funds $  -   - 
  Non-U.S. debt securities    -   (0.2) 
  Equity securities    -   - 
   Total   $  -   (0.2) 
             
 Fair Value        
  Mutual funds $  19.6   20.3 
  Non-U.S. debt securities    -   3.4 
  Equity securities    -   5.9 
   Total   $  19.6   29.6 
Fixed Rate Debt [Table Text Block]
     September 30, December 31,  
 (In millions)  2011 2010  
          
 DTA bonds       
  Carrying value $ 43.2  43.2  
  Fair value   43.0  42.9