Restructuring Charges (Restructuring Charges for Ongoing Activities) (Details) $ in Millions	12 Months Ended
	Dec. 31, 2019 USD ($)
Restructuring Cost and Reserve [Line Items]
Incurred in 2019	$ 10.3
Incurred to Date	13.4
Total Expected to be Incurred	14.5
Residential Heating and Cooling [Member]
Restructuring Cost and Reserve [Line Items]
Incurred in 2019	2.9
Incurred to Date	2.9
Total Expected to be Incurred	2.9
Commercial Heating and Cooling [Member]
Restructuring Cost and Reserve [Line Items]
Incurred in 2019	1.0
Incurred to Date	2.7
Total Expected to be Incurred	3.7
Refrigeration [Member]
Restructuring Cost and Reserve [Line Items]
Incurred in 2019	1.2
Incurred to Date	2.6
Total Expected to be Incurred	2.7
Corporate and Other [Member]
Restructuring Cost and Reserve [Line Items]
Incurred in 2019	5.2
Incurred to Date	5.2
Total Expected to be Incurred	5.2
Severance and Related Expense [Member]
Restructuring Cost and Reserve [Line Items]
Incurred in 2019	2.9
Incurred to Date	5.3
Total Expected to be Incurred	5.4
Asset Write-offs and Accelerated Depreciation [Member]
Restructuring Cost and Reserve [Line Items]
Incurred in 2019	5.6
Incurred to Date	5.6
Total Expected to be Incurred	5.6
Lease Termination [Member]
Restructuring Cost and Reserve [Line Items]
Incurred in 2019	1.2
Incurred to Date	1.9
Total Expected to be Incurred	1.9
Other [Member]
Restructuring Cost and Reserve [Line Items]
Incurred in 2019	0.6
Incurred to Date	0.6
Total Expected to be Incurred	$ 1.6