Restructuring Charges (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2011	Dec. 31, 2010
Information regarding restructuring charges
Charges Incurred in 2011	$ 16.0
Charges Incurred to Date	72.4
Total Charges Expected to be Incurred	76.1
Details activity within the restructuring reserves
Beginning balance	7.2	22.2
Charged to Earnings	16.0	15.6
Cash Utilization	(19.3)	(26.6)
Non-Cash Utilization and Other	(1.3)	(4.0)
Ending balance	2.6	7.2
Severance and related expense [Member]
Information regarding restructuring charges
Charges Incurred in 2011	3.1
Charges Incurred to Date	33.9
Total Charges Expected to be Incurred	34.5
Details activity within the restructuring reserves
Beginning balance	6.2	21.1
Charged to Earnings	3.1	9.0
Cash Utilization	(6.8)	(22.5)
Non-Cash Utilization and Other		(1.4)
Ending balance	2.5	6.2
Asset write-offs and accelerated depreciation [Member]
Information regarding restructuring charges
Charges Incurred in 2011	1.0
Charges Incurred to Date	11.8
Total Charges Expected to be Incurred	11.8
Details activity within the restructuring reserves
Beginning balance		0
Charged to Earnings	1.0	2.6
Cash Utilization	0.3
Non-Cash Utilization and Other	(1.3)	(2.6)
Equipment moves [Member]
Information regarding restructuring charges
Charges Incurred in 2011	0.7
Charges Incurred to Date	1.8
Total Charges Expected to be Incurred	2.2
Details activity within the restructuring reserves
Beginning balance		0
Charged to Earnings	0.7	0.8
Cash Utilization	(0.7)	(0.8)
Lease termination [Member]
Information regarding restructuring charges
Charges Incurred in 2011	4.4
Charges Incurred to Date	7.1
Total Charges Expected to be Incurred	7.1
Details activity within the restructuring reserves
Beginning balance	0.3	0.3
Charged to Earnings	4.4	0.5
Cash Utilization	(4.7)	(0.5)
Ending balance		0.3
Other [Member]
Information regarding restructuring charges
Charges Incurred in 2011	6.8
Charges Incurred to Date	17.8
Total Charges Expected to be Incurred	20.5
Details activity within the restructuring reserves
Beginning balance	0.7	0.8
Charged to Earnings	6.8	2.7
Cash Utilization	(7.4)	(2.8)
Ending balance	0.1	0.7
Residential Heating & Cooling [Member]
Information regarding restructuring charges
Charges Incurred in 2011	2.5
Charges Incurred to Date	18.3
Total Charges Expected to be Incurred	20.9
Commercial Heating & Cooling [Member]
Information regarding restructuring charges
Charges Incurred in 2011	(0.2)
Charges Incurred to Date	12.3
Total Charges Expected to be Incurred	12.7
Service Experts [Member]
Information regarding restructuring charges
Charges Incurred in 2011	5.4
Charges Incurred to Date	8.7
Total Charges Expected to be Incurred	8.9
Refrigeration [Member]
Information regarding restructuring charges
Charges Incurred in 2011	2.5
Charges Incurred to Date	27.3
Total Charges Expected to be Incurred	27.8
Corporate & Other [Member]
Information regarding restructuring charges
Charges Incurred in 2011	5.8
Charges Incurred to Date	5.8
Total Charges Expected to be Incurred	$ 5.8