Divestitures and Discontinued Operations (Net Revenues and After-Tax Earnings) (Details) (USD $) In Millions	3 Months Ended		6 Months Ended		3 Months Ended				6 Months Ended			3 Months Ended		6 Months Ended		3 Months Ended			6 Months Ended
	Jun. 30, 2011	Jun. 30, 2010	Jun. 30, 2011	Jun. 30, 2010	Jun. 30, 2011 Hussmann Divestiture [Member]		Mar. 31, 2011 Hussmann Divestiture [Member]	Jun. 30, 2010 Hussmann Divestiture [Member]	Jun. 30, 2011 Hussmann Divestiture [Member]		Jun. 30, 2010 Hussmann Divestiture [Member]	Jun. 30, 2011 Energy Systems Business [Member]	Jun. 30, 2010 Energy Systems Business [Member]	Jun. 30, 2011 Energy Systems Business [Member]	Jun. 30, 2010 Energy Systems Business [Member]	Jun. 30, 2011 KOXKA Divestiture [Member]	Jun. 30, 2010 KOXKA Divestiture [Member]		Jun. 30, 2011 KOXKA Divestiture [Member]	Sep. 30, 2010 KOXKA Divestiture [Member]	Jun. 30, 2010 KOXKA Divestiture [Member]
Net revenues	$ 217.8	$ 240.1	$ 369.5	$ 427.6	$ 217.8			$ 220.3	$ 369.5		$ 389.5	$ 0	$ 1.3	$ 0	$ 1.8	$ 0	$ 18.5		$ 0		$ 36.3
After-tax earnings (loss) from operations					(183.8)	[1]		18.0	(374.2)	[2]	20.1	0.2	(1.5)	0.3	(3.0)	(0.4)	(44.9)	[3]	(0.7)		(49.4)	[3]
Gain (loss) on sale, net of tax					0			0	0		0	0	0	0.2	0	0	0		0		0
Total discontinued operations, net of tax	(215.2)	(43.9)	(413.9)	(58.0)	(183.8)			18.0	(374.2)		20.1	0.2	(1.5)	0.5	(3.0)	(0.4)	(44.9)		(0.7)		(49.4)
After Tax Impairment Gain (Loss)					$ (198.0)		$ (186.0)		$ (384.0)											$ (53.9)	$ (38.8)

[1] Included in discontinued operations for Hussmann in the second quarter of 2011 is an after-tax impairment loss of approximately $198 million.

[2] Included in discontinued operations for Hussmann for the six months ended June 30, 2011 is an after-tax impairment loss of approximately $384 million.

[3] Included in discontinued operations for KOXKA for the three and six months ended June 30, 2010 is an after-tax impairment loss of $38.8 million related to the initial write-down of the net assets to their estimated fair value.