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Accounts Receivable
 12 Months Ended
Dec. 31, 2013
Accounts Receivables

Note 5. Accounts Receivable

Transactions affecting the allowance for doubtful accounts receivable during the years ended December 31, 2013, 2012 and 2011 were as follows:

 

 

  

2013

 

  

2012

 

 

2011

 

Balance, beginning of year

  

$

49.6

  

  

$

62.6

  

 

$

71.0

  

Provisions charged to expense

  

 

18.2

  

  

 

8.7

  

 

 

18.8

  

Write-offs and other

  

 

(23.0

)  

  

 

(21.7

) 

 

 

(27.2

) 

Balance, end of year

  

$

44.8

  

  

$

49.6

  

 

$

62.6