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Goodwill (Details) - USD ($)
$ in Millions
3 Months Ended 6 Months Ended
Mar. 31, 2024
Jun. 30, 2024
Goodwill [Roll Forward]    
Goodwill, Beginning Balance $ 222.1 $ 222.1
Goodwill adjustment   (2.2)
Goodwill, Ending Balance   219.9
AES    
Goodwill [Roll Forward]    
Goodwill, Beginning Balance 40.4 40.4
Goodwill adjustment 2.2 2.2
Goodwill, Ending Balance   38.2
Home Comfort Solutions    
Goodwill [Roll Forward]    
Goodwill, Beginning Balance 26.1 26.1
Goodwill adjustment   0.0
Goodwill, Ending Balance   26.1
Building Climate Solutions    
Goodwill [Roll Forward]    
Goodwill, Beginning Balance $ 196.0 196.0
Goodwill adjustment   (2.2)
Goodwill, Ending Balance   $ 193.8