Goodwill (Details) $ in Millions	3 Months Ended
	Mar. 31, 2026 USD ($)
Goodwill [Roll Forward]
Goodwill, Beginning Balance	$ 497.2
Goodwill adjustment	6.5
Goodwill, Ending Balance	503.7
Home Comfort Solutions
Goodwill [Roll Forward]
Goodwill, Beginning Balance	87.0
Goodwill adjustment	1.6
Goodwill, Ending Balance	88.6
Building Climate Solutions
Goodwill [Roll Forward]
Goodwill, Beginning Balance	410.2
Goodwill adjustment	4.9
Goodwill, Ending Balance	$ 415.1