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Receivables (Tables)
 12 Months Ended
Dec. 31, 2013
Receivables [Abstract]  
Schedule of Accounts, Notes, Loans and Financing Receivable [Table Text Block]
Receivables consist of the following:
 
December 31,
Dollar amounts in millions
2013
 
2012
Trade receivables
$
69.2

 
$
76.0

Interest receivables
0.2

 
0.8

Income tax receivable
1.2

 
1.8

Other receivables
8.6

 
5.2

Allowance for doubtful accounts
(1.1
)
 
(1.1
)
 
$
78.1

 
$
82.7