Discontinued Operations (Schedule of Business Details and Line Items Comprising Discontinued Operations on Statements of Earnings and Comprehensive Income) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Income Statement Balance Sheet And Additional Disclosures By Disposal Groups Including Discontinued Operations [Line Items]
Loss from disposal of discontinued businesses, before income tax	$ 0.0	$ (0.4)	$ (16.4)
Income tax (benefit) expense	(3.0)	1.7	(1.4)
(Loss) gain from disposal of discontinued businesses, net of tax	3.0	(2.1)	(15.0)
Net earnings (loss) from discontinued operations	3.0	(2.1)	(15.0)
EMEA and Pacific Rim Business [Member]
Income Statement Balance Sheet And Additional Disclosures By Disposal Groups Including Discontinued Operations [Line Items]
Loss from disposal of discontinued businesses, before income tax	0.0	(0.4)	(17.2)
Income tax (benefit) expense	(2.0)	1.7	(1.4)
(Loss) gain from disposal of discontinued businesses, net of tax	2.0	(2.1)	(15.8)
Net earnings (loss) from discontinued operations	2.0	$ (2.1)	(15.8)
Flooring Businesses [Member]
Income Statement Balance Sheet And Additional Disclosures By Disposal Groups Including Discontinued Operations [Line Items]
Loss from disposal of discontinued businesses, before income tax	0.0		0.8
Income tax (benefit) expense	(1.0)		0.0
(Loss) gain from disposal of discontinued businesses, net of tax	1.0		0.8
Net earnings (loss) from discontinued operations	$ 1.0		$ 0.8