Commitments and Contingencies (Narrative) (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended
	Mar. 31, 2012	Mar. 31, 2011	Dec. 31, 2011
Expense for environmental remediation	$ 1.7	$ 1.1
Reserves for environmental matters	71.2		71.7
Reserves for environmental matters, current	27.4		26.9
Maximum annual inflation rate	2.50%
Minimum annual inflation rate	1.50%
Percentage of non-malignant claims, minimum			90.00%
Product warranty accrual, current	252.2		245.1
Commitments and performance guarantees	303.4
Trane [Member]
Settled with majority of insurers	95.00%
Segment, Discontinued Operations [Member]
Reserves for environmental matters	$ 50.1		$ 51.3