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Accounts Receivable
 12 Months Ended
Dec. 31, 2014
Receivables [Abstract]  
Accounts Receivable
Accounts receivable, net as of December 31 consist of the following:
(In millions)
 
2014
 
2013
Trade accounts receivable
 
$
399.9

 
$
433.2

Allowance for doubtful accounts
 
(3.1
)
 
(5.2
)
Accounts receivable, net
 
$
396.8

 
$
428.0


The following table details the changes in allowance for doubtful accounts:
(In millions)
 
2014
 
2013
 
2012
Balance at beginning of the year
 
$
(5.2
)
 
$
(4.3
)
 
$
(4.8
)
Provision for doubtful accounts
 
(0.4
)
 
(0.2
)
 
(0.3
)
Accounts written off
 
2.2

 
0.2

 
0.4

Currency translation and other adjustments
 
0.3

 
(0.9
)
 
0.4

Balance at end of year
 
$
(3.1
)
 
$
(5.2
)
 
$
(4.3
)