Restructuring Charges (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended
	Mar. 31, 2012
Information regarding restructuring charges
Charges Incurred in 2012	$ 3.1
Charges Incurred to Date	75.5
Total Charges Expected to be Incurred	76.8
Details activity within the restructuring reserves
Beginning balance	2.6
Charged to Earnings	3.1
Cash Utilization	(1.4)
Non-Cash Utilization and Other	0.1
Ending balance	4.4
Severance and related expense [Member]
Information regarding restructuring charges
Charges Incurred to Date	33.9
Total Charges Expected to be Incurred	33.9
Details activity within the restructuring reserves
Beginning balance	2.5
Cash Utilization	(0.7)
Ending balance	1.8
Asset write-offs and accelerated depreciation [Member]
Information regarding restructuring charges
Charges Incurred to Date	11.8
Total Charges Expected to be Incurred	11.8
Equipment moves [Member]
Information regarding restructuring charges
Charges Incurred in 2012	0.1
Charges Incurred to Date	1.9
Total Charges Expected to be Incurred	2.2
Details activity within the restructuring reserves
Charged to Earnings	0.1
Cash Utilization	(0.1)
Lease termination [Member]
Information regarding restructuring charges
Charges Incurred in 2012	2.5
Charges Incurred to Date	9.6
Total Charges Expected to be Incurred	9.6
Details activity within the restructuring reserves
Charged to Earnings	2.5
Ending balance	2.5
Other [Member]
Information regarding restructuring charges
Charges Incurred in 2012	0.5
Charges Incurred to Date	18.3
Total Charges Expected to be Incurred	19.3
Details activity within the restructuring reserves
Beginning balance	0.1
Charged to Earnings	0.5
Cash Utilization	(0.6)
Non-Cash Utilization and Other	0.1
Ending balance	0.1
Residential Heating & Cooling [Member]
Information regarding restructuring charges
Charges Incurred in 2012	2.7
Charges Incurred to Date	21.0
Total Charges Expected to be Incurred	22.1
Commercial Heating & Cooling [Member]
Information regarding restructuring charges
Charges Incurred to Date	12.6
Total Charges Expected to be Incurred	12.6
Service Experts [Member]
Information regarding restructuring charges
Charges Incurred in 2012	0.4
Charges Incurred to Date	9.1
Total Charges Expected to be Incurred	9.3
Refrigeration [Member]
Information regarding restructuring charges
Charges Incurred to Date	27.1
Total Charges Expected to be Incurred	27.1
Corporate & Other [Member]
Information regarding restructuring charges
Charges Incurred to Date	5.7
Total Charges Expected to be Incurred	$ 5.7