Reportable Business Segments (Details 1) (USD $) In Millions, unless otherwise specified	3 Months Ended				9 Months Ended
	Sep. 30, 2012		Sep. 30, 2011		Sep. 30, 2012		Sep. 30, 2011
Net Sales
Net Sales	$ 809.7		$ 801.2		$ 2,264.5		$ 2,192.4
Segment Profit (Loss)
Subtotal that includes segment profit and eliminations	81.0		67.8		181.7		152.1
Reconciliation to income from continuing operations before income taxes:
Special product quality adjustment	0.9		0		1.0		(2.4)
Items in (Gains) losses and other expenses, net that are excluded from segment profit	(1.2)	[1]	3.2	[1]	(2.0)	[1]	5.5	[1]
Restructuring charges	0.4		8.0		3.1		11.3
Interest expense, net	4.4		4.1		13.4		12.5
Other expense, net	0		0		0.1		0.1
Income from continuing operations before income taxes	76.5		52.5		166.1		125.1
Residential Heating & Cooling [Member]
Net Sales
Net Sales	386.3		353.8		1,070.7		979.7
Segment Profit (Loss)
Subtotal that includes segment profit and eliminations	37.7		31.3		90.7		70.9
Commercial Heating & Cooling [Member]
Net Sales
Net Sales	219.7		223.6		597.9		596.4
Segment Profit (Loss)
Subtotal that includes segment profit and eliminations	32.5		31.1		74.1		67.2
Refrigeration [Member]
Net Sales
Net Sales	203.7		223.8		595.9		616.3
Segment Profit (Loss)
Subtotal that includes segment profit and eliminations	25.1		20.5		60.6		55.5
Corporate & other [Member]
Segment Profit (Loss)
Subtotal that includes segment profit and eliminations	$ (14.3)		$ (15.1)		$ (43.7)		$ (41.5)

[1] Items in (Gains) losses and other expenses, net that are excluded from segment profit are net change in unrealized gains and/or losses on open futures contracts, discount fees on accounts sold, and realized gains and/or losses on marketable securities.