Business Segment Information (Narrative) (Details) (USD $) In Millions, unless otherwise specified	6 Months Ended	12 Months Ended
	Dec. 31, 2011	Dec. 31, 2011		Dec. 31, 2010	Dec. 31, 2009
Loss on sale/asset impairment		$ (646.9)		$ 0	$ 0
Hussmann Divestiture [Member]
Loss on sale/asset impairment	(260.0)	(646.9)	[1],[2],[3]	0	0
Climate Solutions [Member]
Gain (Loss) on Disposition of Assets		$ 23

[1] Results represent the operating results of Hussmann Business and Branches through their respective divestiture transaction dates.

[2] Included in Loss on sale/asset impairment for the year ended December 31, 2011 are transaction costs of $12.2 million

[3] During the year ended December 31, 2011, the Company recorded a pre-tax loss on sale and impairment charges related to the Hussmann divestiture of $646.9 million. These charges have been excluded from Segment operating income within the Climate Solutions segment as management excludes these charges from Operating income when making operating decisions about the business