Revenue Recognition Revenue by Business Segment Geography (Details) - USD ($)	3 Months Ended				12 Months Ended
	Dec. 31, 2025	Sep. 30, 2025	Jun. 30, 2025	Mar. 31, 2025	Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2023
Disaggregation of Revenue [Line Items]
Revenues	$ 1,195,000,000	$ 1,426,800,000	$ 1,500,900,000	$ 1,072,600,000	$ 5,195,300,000	$ 5,341,300,000	$ 4,981,900,000
UNITED STATES
Disaggregation of Revenue [Line Items]
Revenues					4,821,900,000	5,021,800,000	4,416,900,000
CANADA
Disaggregation of Revenue [Line Items]
Revenues					373,400,000	319,500,000	317,400,000
International [Member]
Disaggregation of Revenue [Line Items]
Revenues							247,600,000
Residential Heating and Cooling [Member]
Disaggregation of Revenue [Line Items]
Revenues					3,343,400,000	3,577,100,000	3,222,900,000
Residential Heating and Cooling [Member] | Sales Channel, Directly to Consumer [Member]
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax					0.76	0.74	0.75
Residential Heating and Cooling [Member] | UNITED STATES
Disaggregation of Revenue [Line Items]
Revenues					3,097,400,000	3,346,000,000	3,001,300,000
Residential Heating and Cooling [Member] | CANADA
Disaggregation of Revenue [Line Items]
Revenues					246,000,000.0	231,100,000	221,600,000
Residential Heating and Cooling [Member] | International [Member]
Disaggregation of Revenue [Line Items]
Revenues							0
Commercial Heating and Cooling [Member]
Disaggregation of Revenue [Line Items]
Revenues					1,851,900,000	1,764,200,000	1,511,400,000
Commercial Heating and Cooling [Member] | UNITED STATES
Disaggregation of Revenue [Line Items]
Revenues					1,724,500,000	1,675,800,000	1,415,600,000
Commercial Heating and Cooling [Member] | CANADA
Disaggregation of Revenue [Line Items]
Revenues					127,400,000	88,400,000	95,800,000
Commercial Heating and Cooling [Member] | International [Member]
Disaggregation of Revenue [Line Items]
Revenues							0
Refrigeration [Member]
Disaggregation of Revenue [Line Items]
Revenues					0	0	247,600,000
Refrigeration [Member] | UNITED STATES
Disaggregation of Revenue [Line Items]
Revenues					0	0	0
Refrigeration [Member] | CANADA
Disaggregation of Revenue [Line Items]
Revenues					$ 0	$ 0	0
Refrigeration [Member] | International [Member]
Disaggregation of Revenue [Line Items]
Revenues							$ 247,600,000