Reportable Business Segments (Segment Data) (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2016	Mar. 31, 2015
Net sales
Net sales	$ 715.2	$ 685.8
Segment profit (loss)
Total segment profit	46.7	31.2
Reconciliation to Income from continuing operations before income taxes:
Special product quality adjustments	(0.4)	(0.2)
Items in Losses (gains) and other expenses, net that are excluded from segment profit (loss)	3.6	4.1
Restructuring (gains) charges	(0.2)	0.3
Interest expense, net	5.8	5.7
Income from continuing operations before income taxes	37.9	21.3
Residential Heating & Cooling [Member]
Net sales
Net sales	377.3	362.5
Segment profit (loss)
Total segment profit	38.3	31.2
Commercial Heating & Cooling [Member]
Net sales
Net sales	170.3	159.9
Segment profit (loss)
Total segment profit	14.2	7.7
Refrigeration [Member]
Net sales
Net sales	167.6	163.4
Segment profit (loss)
Total segment profit	9.0	4.0
Corporate & Other [Member]
Segment profit (loss)
Total segment profit	$ (14.8)	$ (11.7)