Goodwill:

Goodwill

The changes in the carrying amount of goodwill in 2018 and 2017, in total and by segment, are summarized in the table below (in millions):



Segment:	Balance at December 31, 2016 ⁽¹⁾		Changes in foreign currency translation rates		Balance at December 31, 2017		Write-off due to divested businesses			Changes in foreign currency translation rates			Balance at December 31, 2018
Residential Heating & Cooling	$	26.1	$	—	$	26.1	$	—		$	—		$	26.1
Commercial Heating & Cooling	60.1		2.1		62.2		—			(0.8		)	61.4
Refrigeration	108.9		3.3		112.2		(11.5		)	(1.6		)	99.1
	$	195.1	$	5.4	$	200.5	$	(11.5	)	$	(2.4	)	$	186.6

⁽¹⁾ The goodwill balances in the table above are presented net of accumulated impairment charges of $21.2 million, all of which relate to impairments in periods prior to 2016.

We reviewed our reporting unit structure as part of our annual goodwill impairment testing. We identified several components one level below our operating segments which were determined to be reporting units. We then performed our analysis to determine the proper aggregation of our reporting units, which considered similar economic and other characteristics, including product types, gross profits, production processes, customer types, distribution processes, and regulatory environments. Our analysis incorporated qualitative and quantitative measures to evaluate economic similarity and concluded that our reporting units continue to be equivalent to our operating segments except for our North America supermarket display cases and systems business which is a separate reporting unit within the Refrigeration segment.

A qualitative review of impairment indicators was performed in 2018 for the Residential Heating & Cooling, the Commercial Heating & Cooling, and the Refrigeration segments and we determined that it was not more likely than not that the fair values of our reporting units, individually or collectively, were less than their carrying values. Accordingly, a quantitative impairment analysis was not performed for these segments. In the current year, we wrote off $11.5 million of goodwill as a part of the completed sales of our Australia, Asia and South America businesses (discussed further in Note 17 of the Notes to the Consolidated Financial Statements). We did not record any goodwill impairments related to continuing operations in 2017 and 2016.