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Goodwill (Tables)
3 Months Ended
Mar. 31, 2024
Goodwill and Intangible Assets Disclosure [Abstract]  
Schedule of changes in the carrying amount of goodwill
The changes in the carrying amount of goodwill in 2024, in total and by segment, are summarized in the table below (in millions):
Balance as of December 31, 2023
Goodwill
   Adjustment (1)
Balance as of March 31, 2024
Home Comfort Solutions$26.1 $— $26.1 
Building Climate Solutions (1)
196.0 (2.2)193.8 
Total Goodwill$222.1 $(2.2)$219.9 

(1) As discussed in Note 13, an update to our purchase price allocation of AES resulted in a $2.2 million reduction of goodwill.