Revenue Recognition (Narrative) (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
Contract with Customer, Liability, Revenue Recognized					4,600,000	7,400,000	7,700,000
Residential Heating and Cooling [Member]
Disaggregation of Revenue [Line Items]
Revenues					3,343,400,000	3,577,100,000	3,222,900,000
Commercial Heating and Cooling [Member]
Disaggregation of Revenue [Line Items]
Revenues					1,851,900,000	1,764,200,000	1,511,400,000
Refrigeration [Member]
Disaggregation of Revenue [Line Items]
Revenues					0	0	247,600,000
Sales Channel, Directly to Consumer [Member] | Residential Heating and Cooling [Member]
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax					$ 0.76	$ 0.74	$ 0.75
Equipment | Revenue from Contract with Customer Benchmark | Product Concentration Risk
Disaggregation of Revenue [Line Items]
Concentration risk, percentage					80.00%	80.00%	86.00%