Restructuring Charges (Restructuring Charges for Ongoing Activities) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016
Restructuring Cost and Reserve [Line Items]
Incurred in 2017	$ 3.2	$ 1.8
Incurred to Date	18.8
Total Expected to be Incurred	19.4
Residential Heating and Cooling [Member]
Restructuring Cost and Reserve [Line Items]
Incurred in 2017	0.5
Incurred to Date	1.4
Total Expected to be Incurred	1.4
Commercial Heating and Cooling [Member]
Restructuring Cost and Reserve [Line Items]
Incurred in 2017	0.9
Incurred to Date	2.0
Total Expected to be Incurred	2.1
Refrigeration [Member]
Restructuring Cost and Reserve [Line Items]
Incurred in 2017	1.2
Incurred to Date	13.1
Total Expected to be Incurred	13.1
Corporate and Other [Member]
Restructuring Cost and Reserve [Line Items]
Incurred in 2017	0.6
Incurred to Date	2.3
Total Expected to be Incurred	2.8
Severance and Related Expense [Member]
Restructuring Cost and Reserve [Line Items]
Incurred in 2017	2.0	(0.2)
Incurred to Date	11.3
Total Expected to be Incurred	11.5
Asset Write-offs and Accelerated Depreciation [Member]
Restructuring Cost and Reserve [Line Items]
Incurred in 2017	0.8	0.3
Incurred to Date	3.2
Total Expected to be Incurred	3.2
Equipment Moves [Member]
Restructuring Cost and Reserve [Line Items]
Incurred in 2017	0.0	0.0
Incurred to Date	0.0
Total Expected to be Incurred	0.0
Lease Termination [Member]
Restructuring Cost and Reserve [Line Items]
Incurred in 2017	0.0	0.0
Incurred to Date	0.2
Total Expected to be Incurred	0.2
Other [Member]
Restructuring Cost and Reserve [Line Items]
Incurred in 2017	0.4	$ 1.7
Incurred to Date	4.1
Total Expected to be Incurred	$ 4.5