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Receivables (Tables)
6 Months Ended
Jun. 30, 2011
Receivables [Abstract]  
Schedule of Accounts, Notes, Loans and Financing Receivable [Table Text Block]
Receivables consist of the following:
 
Dollar amounts in millions
June 30, 2011
 
December 31, 2010
Trade receivables
$
83.5


 
$
56.2


Interest receivables
1.1


 
1.1


Other receivables
9.8


 
10.8


Allowance of doubtful accounts
(1.4
)
 
(1.3
)
Total
$
93.0


 
$
66.8