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Guarantees and Indemnifications (Tables)
 12 Months Ended
Dec. 31, 2014
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
2014
 
2013
 
2012
Beginning balance
$
29.3

 
$
21.4

 
$
30.3

Accrued to expense during the year
3.6

 
2.7

 
4.5

Accrued/ (credited) to other operating credits and charges
11.3

 
17.7

 
(1.8
)
Foreign currency translation
(1.2
)
 
—

 
—

Payments made
(11.6
)
 
(12.5
)
 
(11.6
)
Total warranty reserves
31.4

 
29.3

 
21.4

Current portion of warranty reserves
(12.0
)
 
(12.0
)
 
(12.0
)
Long term portion of warranty reserves
$
19.4

 
$
17.3

 
$
9.4