Reportable Business Segments (Details) (USD $) In Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2011	Sep. 30, 2010	Sep. 30, 2011	Sep. 30, 2010
Net Sales
Net Sales	$ 923.0	$ 818.2	$ 2,547.7	$ 2,334.4
Segment Profit (Loss)
Subtotal that includes segment profit and eliminations	68.3	71.8	137.0	168.1
Reconciliation to income from continuing operations before income taxes:
Special product quality adjustment			(2.4)
Items in losses and other expenses, net that are excluded from segment profit	3.0	0.5	5.0	6.7
Restructuring charges	10.8	4.7	14.4	15.0
Interest expense, net	4.1	3.5	12.5	9.1
OTHER EXPENSE, net			0.1	0.1
Income from continuing operations before income taxes	50.4	63.1	107.4	137.2
Residential Heating & Cooling [Member]
Net Sales
Net Sales	373.6	370.9	1,040.7	1,068.5
Segment Profit (Loss)
Subtotal that includes segment profit and eliminations	28.8	39.0	60.8	98.6
Commercial Heating & Cooling [Member]
Net Sales
Net Sales	199.3	176.3	536.4	471.7
Segment Profit (Loss)
Subtotal that includes segment profit and eliminations	28.7	24.9	61.7	56.2
Service Experts [Member]
Net Sales
Net Sales	144.7	150.9	406.6	445.6
Segment Profit (Loss)
Subtotal that includes segment profit and eliminations	5.4	6.0	0.4	14.2
Refrigeration [Member]
Net Sales
Net Sales	223.7	140.6	616.3	411.8
Segment Profit (Loss)
Subtotal that includes segment profit and eliminations	20.5	17.3	55.5	47.5
Corporate and Other [Member]
Segment Profit (Loss)
Subtotal that includes segment profit and eliminations	(15.4)	(15.5)	(41.4)	(48.2)
Eliminations [Member]
Net Sales
Net Sales	(18.3)	(20.5)	(52.3)	(63.2)
Segment Profit (Loss)
Subtotal that includes segment profit and eliminations	$ 0.3	$ 0.1		$ (0.2)