Revenue Recognition (Revenue by Business Segment by Geography) (Details) - USD ($) $ in Millions	3 Months Ended								12 Months Ended
	Dec. 31, 2018	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	Dec. 31, 2017	Sep. 30, 2017	Jun. 30, 2017	Mar. 31, 2017	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Net sales	$ 843.6	$ 1,030.2	$ 1,175.4	$ 834.8	$ 891.8	$ 1,052.3	$ 1,102.1	$ 793.4	$ 3,883.9	$ 3,839.6	$ 3,641.6
International [Member]
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Net sales									353.2	473.1	456.0
Residential Heating and Cooling [Member]
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Net sales									2,225.0	2,140.4	2,000.8
Commercial Heating and Cooling [Member]
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Net sales									1,043.5	973.8	917.9
Refrigeration [Member]
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Net sales									615.4	$ 725.4	$ 722.9
CANADA
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Net sales									254.8
CANADA | Residential Heating and Cooling [Member]
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Net sales									158.3
CANADA | Commercial Heating and Cooling [Member]
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Net sales									92.1
CANADA | Refrigeration [Member]
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Net sales									4.4
UNITED STATES
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Net sales									3,275.9
UNITED STATES | Residential Heating and Cooling [Member]
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Net sales									2,066.7
UNITED STATES | Commercial Heating and Cooling [Member]
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Net sales									806.0
UNITED STATES | Refrigeration [Member]
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Net sales									403.2
International [Member]
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Net sales									353.2
International [Member] | Residential Heating and Cooling [Member]
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Net sales									0.0
International [Member] | Commercial Heating and Cooling [Member]
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Net sales									145.4
International [Member] | Refrigeration [Member]
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Net sales									$ 207.8