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Restructuring and Restructuring Related Charges (Narrative) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Restructuring Cost and Reserve [Line Items]
Impairments	$ 0.0	$ 29.4	$ 7.8
Fashion Bed Business
Restructuring Cost and Reserve [Line Items]
Gain on sale of properties	28.2
2018 Restructuring Plan
Restructuring Cost and Reserve [Line Items]
Restructuring and related costs	$ 4.1
Impairments		8.1	$ 8.1
COVID-19
Restructuring Cost and Reserve [Line Items]
Severance and other restructuring costs		$ 6.5