Revenue Recognition (Revenue by Business Segment by Geography) (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Revenue, Net	$ 834.8	$ 793.4
Residential Heating and Cooling [Member]
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Revenue, Net	453.7	419.8
Commercial Heating and Cooling [Member]
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Revenue, Net	205.5	195.5
Refrigeration [Member]
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Revenue, Net	175.6	$ 178.1
UNITED STATES
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Revenue, Net	742.6
UNITED STATES | Residential Heating and Cooling [Member]
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Revenue, Net	453.7
UNITED STATES | Commercial Heating and Cooling [Member]
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Revenue, Net	179.1
UNITED STATES | Refrigeration [Member]
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Revenue, Net	109.8
Europe [Member]
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Revenue, Net	53.2
Europe [Member] | Residential Heating and Cooling [Member]
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Revenue, Net	0.0
Europe [Member] | Commercial Heating and Cooling [Member]
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Revenue, Net	26.4
Europe [Member] | Refrigeration [Member]
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Revenue, Net	26.8
Asia Pacific [Member]
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Revenue, Net	39.0
Asia Pacific [Member] | Residential Heating and Cooling [Member]
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Revenue, Net	0.0
Asia Pacific [Member] | Commercial Heating and Cooling [Member]
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Revenue, Net	0.0
Asia Pacific [Member] | Refrigeration [Member]
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Revenue, Net	$ 39.0