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Revenue Recognition (Revenue by Business Segment by Geography) (Details) - USD ($)	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019	Dec. 31, 2018
Disaggregation of Revenue [Line Items]
Contract with Customer, Liability, Revenue Recognized	$ 1,500,000		$ 1,100,000
Revenue, Net	723,800,000	$ 790,300,000
Residential Heating and Cooling [Member]
Disaggregation of Revenue [Line Items]
Revenue, Net	442,100,000	465,600,000
Commercial Heating and Cooling [Member]
Disaggregation of Revenue [Line Items]
Revenue, Net	178,400,000	173,300,000
Refrigeration [Member]
Disaggregation of Revenue [Line Items]
Revenue, Net	103,300,000	151,400,000
Equipment Sales [Member] \| Commercial Heating and Cooling [Member]
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	0.84	0.83
International [Member]
Disaggregation of Revenue [Line Items]
Revenue, Net	44,000,000.0	59,200,000
International [Member] \| Residential Heating and Cooling [Member]
Disaggregation of Revenue [Line Items]
Revenue, Net	0	0
International [Member] \| Commercial Heating and Cooling [Member]
Disaggregation of Revenue [Line Items]
Revenue, Net	200,000	100,000
International [Member] \| Refrigeration [Member]
Disaggregation of Revenue [Line Items]
Revenue, Net	43,800,000	59,100,000
CANADA
Disaggregation of Revenue [Line Items]
Revenue, Net	46,800,000	49,000,000.0
CANADA \| Residential Heating and Cooling [Member]
Disaggregation of Revenue [Line Items]
Revenue, Net	29,700,000	32,400,000
CANADA \| Commercial Heating and Cooling [Member]
Disaggregation of Revenue [Line Items]
Revenue, Net	17,100,000	15,900,000
CANADA \| Refrigeration [Member]
Disaggregation of Revenue [Line Items]
Revenue, Net	0	700,000
UNITED STATES
Disaggregation of Revenue [Line Items]
Revenue, Net	633,000,000.0	682,100,000
UNITED STATES \| Residential Heating and Cooling [Member]
Disaggregation of Revenue [Line Items]
Revenue, Net	412,400,000	433,200,000
UNITED STATES \| Commercial Heating and Cooling [Member]
Disaggregation of Revenue [Line Items]
Revenue, Net	161,100,000	157,300,000
UNITED STATES \| Refrigeration [Member]
Disaggregation of Revenue [Line Items]
Revenue, Net	$ 59,500,000	$ 91,600,000