Revenue Recognition (Revenue by Business Segment by Geography) (Details) - USD ($)	3 Months Ended		6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021
Disaggregation of Revenue [Line Items]
Contract with Customer, Liability, Revenue Recognized	$ 2,100,000	$ 800,000	$ 5,900,000	$ 2,400,000
Revenue, Net	1,366,300,000	1,239,000,000	2,379,700,000	2,169,400,000
Residential Heating and Cooling [Member]
Disaggregation of Revenue [Line Items]
Revenue, Net	977,500,000	838,000,000.0	1,659,600,000	1,444,200,000
Commercial Heating and Cooling
Disaggregation of Revenue [Line Items]
Revenue, Net	219,600,000	252,800,000	407,300,000	452,000,000.0
Refrigeration [Member]
Disaggregation of Revenue [Line Items]
Revenue, Net	169,200,000	148,200,000	312,800,000	273,200,000
Sales Channel, Directly to Consumer [Member] | Residential Heating and Cooling [Member]
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	0.70	0.76	0.69	0.72
Equipment Sales | Commercial Heating and Cooling
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	0.81	0.85	0.81	0.84
International [Member]
Disaggregation of Revenue [Line Items]
Revenue, Net	61,500,000	66,200,000	113,700,000	115,500,000
International [Member] | Residential Heating and Cooling [Member]
Disaggregation of Revenue [Line Items]
Revenue, Net	0	0	0	0
International [Member] | Commercial Heating and Cooling
Disaggregation of Revenue [Line Items]
Revenue, Net	0	200,000	500,000	200,000
International [Member] | Refrigeration [Member]
Disaggregation of Revenue [Line Items]
Revenue, Net	61,500,000	66,000,000.0	113,200,000	115,300,000
CANADA
Disaggregation of Revenue [Line Items]
Revenue, Net	88,100,000	98,900,000	151,000,000.0	163,200,000
CANADA | Residential Heating and Cooling [Member]
Disaggregation of Revenue [Line Items]
Revenue, Net	75,700,000	75,000,000.0	128,200,000	122,400,000
CANADA | Commercial Heating and Cooling
Disaggregation of Revenue [Line Items]
Revenue, Net	12,400,000	23,900,000	22,800,000	40,800,000
CANADA | Refrigeration [Member]
Disaggregation of Revenue [Line Items]
Revenue, Net	0	0	0	0
UNITED STATES
Disaggregation of Revenue [Line Items]
Revenue, Net	1,216,700,000	1,073,900,000	2,115,000,000	1,890,700,000
UNITED STATES | Residential Heating and Cooling [Member]
Disaggregation of Revenue [Line Items]
Revenue, Net	901,800,000	763,000,000.0	1,531,400,000	1,321,800,000
UNITED STATES | Commercial Heating and Cooling
Disaggregation of Revenue [Line Items]
Revenue, Net	207,200,000	228,700,000	384,000,000.0	411,000,000.0
UNITED STATES | Refrigeration [Member]
Disaggregation of Revenue [Line Items]
Revenue, Net	$ 107,700,000	$ 82,200,000	$ 199,600,000	$ 157,900,000