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Share-Based Compensation Plans (Tables)
6 Months Ended
Jun. 30, 2011
Share-Based Compensation Plans  
Schedule of Amounts Recognized for Share-Based Compensation
     Quarter Ended
June 30,
    Six Months Ended
June 30,
 
     2011     2010     2011     2010  
(dollars in millions)                         

Total cost of share-based compensation plans

   $ 11.3      $ 12.8      $ 25.4      $ 27.4   

Amounts capitalized in inventory and fixed assets

     (0.2     (0.4 )       (0.6     (0.8

Amounts recognized in income for amounts previously capitalized in inventory and fixed assets

     0.4        0.4        0.8        0.9   
                                

Amounts charged against income

   $ 11.5      $ 12.8      $ 25.6      $ 27.5