Goodwill (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2019
Goodwill
Beginning Balance	$ 186.9
Goodwill, Foreign Currency Translation Gain (Loss)		$ 0.4
Other	0.3
Ending Balance	186.6	186.5
Goodwill, accumulated impairment losses		32.7
Residential Heating & Cooling [Member]
Goodwill
Beginning Balance	26.1
Goodwill, Foreign Currency Translation Gain (Loss)	0.0	0.0
Ending Balance	26.1	26.1
Commercial Heating & Cooling [Member]
Goodwill
Beginning Balance	61.1
Goodwill, Foreign Currency Translation Gain (Loss)	0.0	0.0
Ending Balance	61.1	61.1
Refrigeration [Member]
Goodwill
Beginning Balance	99.7
Goodwill, Foreign Currency Translation Gain (Loss)	(0.3)	0.4
Ending Balance	$ 99.4	$ 99.3