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Warranties
 12 Months Ended
Dec. 31, 2012
Commitments and Contingencies Disclosure [Abstract]  
Warranties
Warranties

The changes in the accruals for warranties for the years ended December 31, 2012, 2011, and 2010 are as follows:

 
December 31, 2012
 
December 31, 2011
 
December 31, 2010
 
(in millions)
Beginning balance
$
13.5

 
$
13.2

 
$
19.6

Warranty costs incurred
(5.9
)
 
(6.3
)
 
(5.7
)
Warranty originations and revisions
7.7

 
9.1

 
1.9

Warranty expirations
(2.8
)
 
(2.5
)
 
(2.6
)
Ending balance
$
12.5

 
$
13.5

 
$
13.2