Reportable Business Segments (Equity Method Investments) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Segment Reporting Information [Line Items]
Total income from equity method investments	$ 7.9	$ 8.5	$ 5.1
Residential Heating and Cooling [Member]
Segment Reporting Information [Line Items]
Total income from equity method investments	(4.4)	(5.5)	(0.9)
Commercial Heating and Cooling [Member]
Segment Reporting Information [Line Items]
Total income from equity method investments	$ (3.5)	$ (3.0)	$ (4.2)