Divestitures and Discontinued Operations (Discontinued Operations by Business Net of Tax) (Details) (USD $) In Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2011	Jun. 30, 2010	Jun. 30, 2011	Jun. 30, 2010
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Total discontinued operations, net of tax	$ (215.2)	$ (43.9)	$ (413.9)	$ (58.0)
Hussmann Divestiture [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Total discontinued operations, net of tax	(183.8)	18.0	(374.2)	20.1
Energy Systems Divestiture [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Total discontinued operations, net of tax	0.2	(1.5)	0.5	(3.0)
KOXKA Divestiture [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Total discontinued operations, net of tax	(0.4)	(44.9)	(0.7)	(49.4)
Other Discontinued Operations [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Total discontinued operations, net of tax	$ (31.2)	$ (15.5)	$ (39.5)	$ (25.7)