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Goodwill (Tables)
 3 Months Ended
Mar. 31, 2013
Goodwill and Intangible Assets Disclosure [Abstract]  
Goodwill
The changes in the carrying amount of goodwill for the first three months of 2013, in total and by segment, are summarized in the table below (in millions): 
 
Balance at December 31, 2012
 
 
 
 
 
Balance at March 31, 2013
Segment:
Goodwill (1)
 
Acquisitions / (Dispositions)
 
Other(2)
 
Goodwill
Residential Heating & Cooling
$
26.1

 
$
—

 
$
—

 
$
26.1

Commercial Heating & Cooling
63.8

 
—

 
(0.5
)
 
63.3

Refrigeration
133.9

 
—

 
0.1

 
134.0

 
$
223.8

 
$
—

 
$
(0.4
)
 
$
223.4

 
(1) The Goodwill balances presented in the table above are presented net of accumulated impairment charges of $17.0 million, all of which relate to impairments in periods prior to 2012.
(2) Other consists of changes in foreign currency translation rates.