Impairment Charges (Summary of Impairment Charges on Continued and Discontinued Operations) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Impaired Long-Lived Assets Held and Used [Line Items]
Other Long-Lived Asset Impairments	$ 7.8	$ 5.4	$ 3.6
Goodwill Impairment			1.3
Total Impairments	7.8	5.4	4.9
Residential Products
Impaired Long-Lived Assets Held and Used [Line Items]
Other Long-Lived Asset Impairments	1.1	0.0	0.0
Goodwill Impairment			0.0
Total Impairments			0.0
Industrial Products
Impaired Long-Lived Assets Held and Used [Line Items]
Other Long-Lived Asset Impairments	0.0	0.3	3.6
Goodwill Impairment			1.3
Total Impairments			4.9
Furniture Products
Impaired Long-Lived Assets Held and Used [Line Items]
Other Long-Lived Asset Impairments	$ 6.7	5.1	0.0
Goodwill Impairment			0.0
Total Impairments		$ 5.1	$ 0.0