Revenue Recognition (Revenue by Business Segment by Geography) (Details) - USD ($)	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Disaggregation of Revenue [Line Items]
Contract with Customer, Liability, Revenue Recognized	$ 3,700,000	$ 1,600,000
Revenue, Net	1,013,400,000	930,500,000
Residential Heating and Cooling [Member]
Disaggregation of Revenue [Line Items]
Revenue, Net	682,200,000	606,300,000
Commercial Heating and Cooling
Disaggregation of Revenue [Line Items]
Revenue, Net	187,700,000	199,200,000
Refrigeration [Member]
Disaggregation of Revenue [Line Items]
Revenue, Net	143,500,000	125,000,000.0
Sales Channel, Directly to Consumer [Member] | Residential Heating and Cooling [Member]
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	0.66	0.67
Equipment Sales | Commercial Heating and Cooling
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	0.80	0.83
International [Member]
Disaggregation of Revenue [Line Items]
Revenue, Net	52,200,000	49,400,000
International [Member] | Residential Heating and Cooling [Member]
Disaggregation of Revenue [Line Items]
Revenue, Net	0	0
International [Member] | Commercial Heating and Cooling
Disaggregation of Revenue [Line Items]
Revenue, Net	500,000	0
International [Member] | Refrigeration [Member]
Disaggregation of Revenue [Line Items]
Revenue, Net	51,700,000	49,400,000
CANADA
Disaggregation of Revenue [Line Items]
Revenue, Net	62,900,000	64,400,000
CANADA | Residential Heating and Cooling [Member]
Disaggregation of Revenue [Line Items]
Revenue, Net	52,500,000	47,500,000
CANADA | Commercial Heating and Cooling
Disaggregation of Revenue [Line Items]
Revenue, Net	10,400,000	16,900,000
CANADA | Refrigeration [Member]
Disaggregation of Revenue [Line Items]
Revenue, Net	0	0
UNITED STATES
Disaggregation of Revenue [Line Items]
Revenue, Net	898,300,000	816,700,000
UNITED STATES | Residential Heating and Cooling [Member]
Disaggregation of Revenue [Line Items]
Revenue, Net	629,700,000	558,800,000
UNITED STATES | Commercial Heating and Cooling
Disaggregation of Revenue [Line Items]
Revenue, Net	176,800,000	182,300,000
UNITED STATES | Refrigeration [Member]
Disaggregation of Revenue [Line Items]
Revenue, Net	$ 91,800,000	$ 75,600,000