Revenue Recognition (Narrative) (Details) - USD ($)	3 Months Ended	9 Months Ended
	Sep. 30, 2023	Sep. 30, 2023
Disaggregation of Revenue [Line Items]
Contract with Customer, Liability, Revenue Recognized	$ 2,800,000	$ 7,000,000
Home Comfort Solutions | Sales Channel, Directly to Consumer
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	0.77	0.75
Commercial Heating and Cooling | Equipment Sales
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	$ 0.88	$ 0.87