Reportable Business Segments (Details 3) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Segment Reporting Information [Line Items]
Total capital expenditures	$ 88.4	$ 78.3	$ 50.2
Residential Heating and Cooling [Member]
Segment Reporting Information [Line Items]
Total capital expenditures	39.4	34.2	13.7
Commercial Heating and Cooling [Member]
Segment Reporting Information [Line Items]
Total capital expenditures	14.1	11.2	8.7
Refrigeration [Member]
Segment Reporting Information [Line Items]
Total capital expenditures	15.8	16.5	15.6
Corporate and Other [Member]
Segment Reporting Information [Line Items]
Total capital expenditures	$ 19.1	$ 16.4	$ 12.2