Reportable Business Segments (Details 4) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Summary of depreciation and amortization expense by business segment
Total depreciation and amortization	$ 58.9	$ 55.4	$ 56.6
Residential Heating and Cooling [Member]
Summary of depreciation and amortization expense by business segment
Total depreciation and amortization	20.5	19.9	19.6
Commercial Heating and Cooling [Member]
Summary of depreciation and amortization expense by business segment
Total depreciation and amortization	9.0	8.5	8.6
Refrigeration [Member]
Summary of depreciation and amortization expense by business segment
Total depreciation and amortization	15.3	13.0	14.8
Corporate and Other [Member]
Summary of depreciation and amortization expense by business segment
Total depreciation and amortization	$ 14.1	$ 14.0	$ 13.6