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ALLOWANCE FOR DOUBTFUL ACCOUNTS RECEIVABLES (Tables)
9 Months Ended
Sep. 30, 2018
Accounts Receivable, Net [Abstract]  
Allowance for Doubtful Accounts Receivable
Allowance for doubtful accounts receivable consisted of the following:
 
September 30,
 
2018
 
2017
 
($ in millions)
Balance at beginning of year
$
12.3

 
$
10.1

Provisions charged
1.6

 
1.3

Foreign currency translation adjustment
(0.4
)
 

Balance at end of period
$
13.5

 
$
11.4