Reportable Business Segments (Depreciation and Amortization Expense by Segment) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Segment Reporting Information [Line Items]
Total depreciation and amortization	$ 77.9	$ 72.4	$ 72.6
Residential Heating and Cooling [Member]
Segment Reporting Information [Line Items]
Total depreciation and amortization	31.5	27.6	28.5
Commercial Heating and Cooling [Member]
Segment Reporting Information [Line Items]
Total depreciation and amortization	12.9	13.2	13.5
Refrigeration [Member]
Segment Reporting Information [Line Items]
Total depreciation and amortization	9.1	7.8	7.8
Corporate and Other [Member]
Segment Reporting Information [Line Items]
Total depreciation and amortization	$ 24.4	$ 23.8	$ 22.8