Reportable Business Segments (Depreciation and Amortization Expense by Segment) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Segment Reporting Information [Line Items]
Total depreciation and amortization	$ 62.8	$ 60.8	$ 58.9
Residential Heating and Cooling [Member]
Segment Reporting Information [Line Items]
Total depreciation and amortization	20.7	20.7	20.5
Commercial Heating and Cooling [Member]
Segment Reporting Information [Line Items]
Total depreciation and amortization	9.7	9.3	9.0
Refrigeration [Member]
Segment Reporting Information [Line Items]
Total depreciation and amortization	15.5	16.3	15.3
Corporate and Other [Member]
Segment Reporting Information [Line Items]
Total depreciation and amortization	$ 16.9	$ 14.5	$ 14.1