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Goodwill (Details) - USD ($) $ in Millions	3 Months Ended	9 Months Ended
Goodwill (Details) - USD ($) $ in Millions	Jun. 30, 2024	Sep. 30, 2024
Goodwill [Roll Forward]
Goodwill, Beginning Balance		$ 222.1
Goodwill adjustment		(2.2)
Goodwill, Ending Balance		219.9
AES
Goodwill [Roll Forward]
Goodwill, Beginning Balance		40.4
Goodwill adjustment	$ 2.2	2.2
Goodwill, Ending Balance		38.2
Home Comfort Solutions
Goodwill [Roll Forward]
Goodwill, Beginning Balance		26.1
Goodwill adjustment		0.0
Goodwill, Ending Balance		26.1
Building Climate Solutions
Goodwill [Roll Forward]
Goodwill, Beginning Balance		196.0
Goodwill adjustment		(2.2)
Goodwill, Ending Balance		$ 193.8

Amount after accumulated impairment loss of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

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