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Receivables
 12 Months Ended
Dec. 31, 2017
Receivables [Abstract]  
Receivables
RECEIVABLES
Receivables consist of the following:
 
December 31,
Dollar amounts in millions
2017
 
2016
Trade receivables
$
124.6

 
$
96.1

Income tax receivable
2.2

 
1.7

Other receivables
16.6

 
11.5

Allowance for doubtful accounts
(0.9
)
 
(1.0
)
 
$
142.5

 
$
108.3



Other receivables at December 31, 2017 and 2016 primarily consist of sales tax receivables, vendor rebates, interest receivables, a receivable associated with an affiliate and other miscellaneous receivables.