Reportable Business Segments (Depreciation and Amortization Expense by Segment) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Segment Reporting Information [Line Items]
Total depreciation and amortization	$ 58.1	$ 62.8	$ 60.8
Residential Heating and Cooling [Member]
Segment Reporting Information [Line Items]
Total depreciation and amortization	21.0	20.7	20.7
Commercial Heating and Cooling [Member]
Segment Reporting Information [Line Items]
Total depreciation and amortization	9.8	9.7	9.3
Refrigeration [Member]
Segment Reporting Information [Line Items]
Total depreciation and amortization	9.7	15.5	16.3
Corporate and Other [Member]
Segment Reporting Information [Line Items]
Total depreciation and amortization	$ 17.6	$ 16.9	$ 14.5