Revenue Recognition (Narrative) (Details) - USD ($)	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Revenues	$ 4,194,100,000	$ 3,634,100,000	$ 3,807,200,000
Contract with Customer, Liability, Revenue Recognized	3,600,000	7,200,000
Residential Heating and Cooling [Member]
Revenues	2,775,600,000	2,361,500,000	2,291,100,000
Commercial Heating and Cooling [Member]
Revenues	864,800,000	800,900,000	947,400,000
Refrigeration [Member]
Revenues	553,700,000	471,700,000	568,700,000
Sales Channel, Directly to Consumer [Member] | Residential Heating and Cooling [Member]
Revenue from Contract with Customer, Excluding Assessed Tax	0.73	0.75	0.75
Service [Member] | Refrigeration [Member]
Revenue from Contract with Customer, Excluding Assessed Tax	$ 0.01	$ 0.01	$ 0.01