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Other Operating Credits and Charges, Net (Tables)
 12 Months Ended
Dec. 31, 2018
Other Operating Credits And Charges, Net [Abstract]  
Other Operating Credits and Charges Net [Table Text Block]
The major components of “Other operating credits and charges, net” in the Consolidated Statements of Income for the years ended December 31 are reflected in the table below and described in the paragraphs following the table: 
Dollar amounts in millions
Year ended December 31,
2018
 
2017
 
2016
Reorganization charges
$
(10.3
)
 
$
—

 
$
—

Refund of sales and use taxes
0.5

 
0.8

 
—

Refund of environmental costs
8.3

 
—

 
—

Loss on workers compensation reserve
—

 
(0.9
)
 
—

Adjustment to product related warranty reserves
7.7

 
(5.4
)
 
(16.9
)
Expenses related to hurricane
(4.5
)
 
—

 
—

Other
0.5

 
0.6

 
(0.5
)
 
$
2.2


$
(4.9
)

$
(17.4
)
Restructuring Cost and Reserve [Line Items]  
Restructuring and Related Costs [Table Text Block]
Severance

Over the course of the last three years, we have entered into restructuring plans in an effort to reduce overall expenses. The detail of the severance accrual and related expense and payments for the last three years is as follows:

Dollar amounts in millions
Year ended December 31,
2018
 
2017
 
2016
Beginning balance at December 31,
$
1.7

 
$
0.2

 
$
0.2

Accrued to expense during the year
0.3

 
3.7

 
0.5

Accrued to other operating credits and charges, net
10.3

 
—

 
—

Payments
(6.8
)
 
(2.2
)
 
(0.5
)
Ending balance
$
5.5

 
$
1.7

 
$
0.2