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Guarantees and Indemnifications (Tables)
 12 Months Ended
Dec. 31, 2011
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
2011
 
2010
 
2009
Beginning balance
$
29.5

 
$
32.9

 
$
33.7

Accrued to expense during the year
13.7

 
11.2

 
9.5

Payments made
(12.9
)
 
(14.6
)
 
(10.3
)
Total warranty reserves
30.3

 
29.5

 
32.9

Current portion
(12.0
)
 
(10.0
)
 
(7.0
)
Long term portion
$
18.3

 
$
19.5

 
$
25.9