Goodwill and Other Intangible Assets - Goodwill (Details) $ in Millions	9 Months Ended
	Oct. 01, 2022 USD ($)
Goodwill [Roll Forward]
Goodwill, gross, beginning balance	$ 376.1
Accumulated impairment losses, beginning balance	(78.8)
Goodwill, net, beginning balance	297.3
Goodwill acquired (disposed) / measurement period adjustments	1.7
Goodwill impairment losses	6.9
Goodwill, gross, ending balance	377.8
Accumulated impairment losses, ending balance	(71.8)
Goodwill, net, ending balance	306.0
Workplace furnishings
Goodwill [Roll Forward]
Goodwill, gross, beginning balance	162.3
Accumulated impairment losses, beginning balance	(78.6)
Goodwill, net, beginning balance	83.6
Goodwill acquired (disposed) / measurement period adjustments	(6.9)
Goodwill impairment losses	6.9
Goodwill, gross, ending balance	155.3
Accumulated impairment losses, ending balance	(71.7)
Goodwill, net, ending balance	83.6
Residential building products
Goodwill [Roll Forward]
Goodwill, gross, beginning balance	213.8
Accumulated impairment losses, beginning balance	(0.1)
Goodwill, net, beginning balance	213.7
Goodwill acquired (disposed) / measurement period adjustments	8.6
Goodwill impairment losses	0.0
Goodwill, gross, ending balance	222.5
Accumulated impairment losses, ending balance	(0.1)
Goodwill, net, ending balance	$ 222.3