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Accounts Receivable
 12 Months Ended
Dec. 31, 2014
Accounts Receivable [Abstract]  
Accounts Receivable
Accounts Receivable

Accounts receivable are summarized as follows ($ in millions):
 
December 31,
 
2014
 
2013
Trade receivables
$
69.8

 
$
78.0

Business tax credits, including VAT
4.2

 
5.4

Hedge contracts receivable
0.4

 
—

Other receivables
19.8

 
24.6

Less allowance for doubtful accounts and sales discounts
(0.3
)
 
(0.4
)
Total accounts receivable
$
93.9

 
$
107.6