Revenue Recognition (Narrative) (Details) - USD ($)	3 Months Ended		9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021
Disaggregation of Revenue [Line Items]
Contract with Customer, Liability, Revenue Recognized	$ 3,600,000	$ 600,000	$ 9,500,000	$ 2,900,000
Residential Heating and Cooling [Member] | Sales Channel, Directly to Consumer
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	0.72	0.73	0.70	0.72
Commercial Heating and Cooling | Equipment Sales
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	$ 0.83	$ 0.81	$ 0.82	$ 0.83