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Goodwill
 3 Months Ended
Mar. 31, 2019
Goodwill and Intangible Assets Disclosure [Abstract]  
Goodwill Goodwill:
The changes in the carrying amount of goodwill for the first three months of 2019, in total and by segment, are summarized in the table below (in millions):
 
Balance at December 31, 2018
 
Goodwill Reallocation (1)
 
Changes in foreign currency translation rates
 
Balance at March 31, 2019
Residential Heating & Cooling
$
26.1

 
$
—

 
$
—

 
$
26.1

Commercial Heating & Cooling
61.4

 
(0.3
)
 
—

 
61.1

Refrigeration
99.1

 
0.3

 
(0.1
)
 
99.3

Total Goodwill
$
186.6

 
$
—


$
(0.1
)
 
$
186.5


(1) In 2019, we reorganized our external financial reporting structure by moving our European Commercial HVAC business from our Commercial segment to our Refrigeration segment as we will manage both our commercial HVAC and refrigeration operations in Europe together. See Note 16 for additional information.
    
We perform our annual goodwill impairment test in the fourth quarter of each year. We continue to monitor our reporting units for indicators of impairment throughout the year to determine if a change in facts or circumstances warrants a re-evaluation of our goodwill.