Revenue Recognition (Revenue by Business Segment by Geography) (Details) - USD ($)	3 Months Ended
	Mar. 31, 2026	Mar. 31, 2025
Disaggregation of Revenue [Line Items]
Contract with Customer, Liability, Revenue Recognized	$ 600,000	$ 2,300,000
Revenue, Net	1,135,100,000	1,072,600,000
Residential Heating and Cooling [Member]
Disaggregation of Revenue [Line Items]
Revenue, Net	650,000,000.0	721,400,000
Commercial Heating and Cooling
Disaggregation of Revenue [Line Items]
Revenue, Net	485,100,000	351,200,000
Sales Channel, Directly to Consumer | Residential Heating and Cooling [Member]
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	0.75	0.73
Equipment Sales | Commercial Heating and Cooling
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	83	0.79
CANADA
Disaggregation of Revenue [Line Items]
Revenue, Net	84,700,000	72,200,000
CANADA | Residential Heating and Cooling [Member]
Disaggregation of Revenue [Line Items]
Revenue, Net	46,000,000.0	53,600,000
CANADA | Commercial Heating and Cooling
Disaggregation of Revenue [Line Items]
Revenue, Net	38,700,000	18,600,000
UNITED STATES
Disaggregation of Revenue [Line Items]
Revenue, Net	1,050,400,000	1,000,400,000
UNITED STATES | Residential Heating and Cooling [Member]
Disaggregation of Revenue [Line Items]
Revenue, Net	604,000,000.0	667,800,000
UNITED STATES | Commercial Heating and Cooling
Disaggregation of Revenue [Line Items]
Revenue, Net	$ 446,400,000	$ 332,600,000