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Product Warranty (Tables)
 12 Months Ended
Dec. 31, 2018
Commitments and Contingencies Disclosure [Abstract]  
Schedule of Product Warranty Liability [Table Text Block]
The activity in warranty reserves for the last three years is summarized in the following table.
 
  
Year ended December 31,
Dollar amounts in millions
2018
 
2017
 
2016
Beginning balance
$
24.7

 
$
24.1

 
$
21.0

Accrued to expense during the year
1.0

 
1.0

 
0.8

Accrued/ (credited) to other operating credits and charges
(7.7
)
 
5.4

 
16.9

Accrued to discontinued operations
5.0

 
1.5

 
0.5

Foreign currency translation
(0.7
)
 
2.2

 
(0.2
)
Payments made
(8.8
)
 
(9.5
)
 
(14.9
)
Total warranty reserves
13.5

 
24.7

 
24.1

Current portion of warranty reserves
(3.0
)
 
(9.0
)
 
(9.0
)
Long term portion of warranty reserves
$
10.5

 
$
15.7

 
$
15.1