Reportable Business Segments (Details 1) (USD $) In Millions, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2012	Jun. 30, 2011	Jun. 30, 2012	Jun. 30, 2011
Net Sales
Net Sales	$ 933.8	$ 914.1	$ 1,618.0	$ 1,583.5
Segment Profit (Loss)
Subtotal that includes segment profit and eliminations	79.5	75.5	84.6	76.4
Reconciliation to income from continuing operations before income taxes:
Special product quality adjustment	0.5	(2.4)	0.1	(2.4)
Items in losses (gains) and other expenses, net that are excluded from segment profit (2)	0.6	1.3	(0.9)	2.3
Restructuring charges	0.6	2.4	3.7	3.6
Interest expense, net	4.3	4.3	9.0	8.4
OTHER EXPENSE, net	0.1	0.1	0.1	0.1
Income from continuing operations before income taxes	73.4	69.8	72.6	64.4
Residential Heating & Cooling [Member]
Net Sales
Net Sales	411.9	372.3	684.5	625.9
Segment Profit (Loss)
Subtotal that includes segment profit and eliminations	42.0	35.2	53.0	39.6
Commercial Heating & Cooling [Member]
Net Sales
Net Sales	200.7	198.3	337.7	337.1
Segment Profit (Loss)
Subtotal that includes segment profit and eliminations	30.1	27.1	36.1	33.0
Service Experts [Member]
Net Sales
Net Sales	133.1	145.4	234.7	261.9
Segment Profit (Loss)
Subtotal that includes segment profit and eliminations	2.0	3.2	(9.5)	(5.0)
Refrigeration [Member]
Net Sales
Net Sales	207.1	217.5	392.2	392.6
Segment Profit (Loss)
Subtotal that includes segment profit and eliminations	21.3	21.4	35.5	35.0
Corporate & other [Member]
Segment Profit (Loss)
Subtotal that includes segment profit and eliminations	(15.7)	(11.6)	(30.1)	(26.0)
Eliminations [Member]
Net Sales
Net Sales	(19.0)	(19.4)	(31.1)	(34.0)
Segment Profit (Loss)
Subtotal that includes segment profit and eliminations	$ (0.2)	$ 0.2	$ (0.4)	$ (0.2)