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Product Warranty (Tables)
 12 Months Ended
Dec. 31, 2016
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
2016
 
2015
 
2014
Beginning balance
$
21.0

 
$
31.4

 
$
29.3

Accrued to expense during the year
0.8

 
0.7

 
0.6

Accrued/ (credited) to other operating credits and charges
16.9

 
(1.4
)
 
11.3

Accrued to discontinued operations
0.5

 
2.5

 
3.0

Foreign currency translation
(0.2
)
 
(0.5
)
 
(1.2
)
Payments made
(14.9
)
 
(11.7
)
 
(11.6
)
Total warranty reserves
24.1

 
21.0

 
31.4

Current portion of warranty reserves
(9.0
)
 
(6.0
)
 
(12.0
)
Long term portion of warranty reserves
$
15.1

 
$
15.0

 
$
19.4