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Product Warranty (Tables)
 3 Months Ended
Mar. 31, 2018
Commitments and Contingencies Disclosure [Abstract]  
Schedule of Product Warranty Liability [Table Text Block]
The activity in warranty reserves for the quarter ended March 31, 2018 and 2017 are summarized in the following table:
 
Quarter Ended March 31,
Dollar amounts in millions
2018
 
2017
Beginning balance
$
24.7

 
$
24.1

Accrued to expense
0.2

 
0.2

Accrued to other operating credits and charges
—

 
3.4

Foreign currency translation
0.4

 
0.2

Payments made
(1.1
)
 
(3.4
)
Total warranty reserves
24.2

 
24.5

Current portion of warranty reserves
(9.0
)
 
(9.0
)
Long-term portion of warranty reserves
$
15.2

 
$
15.5