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Goodwill and Other Intangible Assets - Goodwill (Details)
$ in Millions
 6 Months Ended
Jul. 01, 2023
USD ($)
Goodwill [Roll Forward]  
Goodwill, gross, beginning balance $ 371.1
Accumulated impairment losses (65.2)
Goodwill, net, beginning balance 305.9
Goodwill acquired 187.3
Goodwill, gross, ending balance 558.4
Accumulated impairment losses (65.2)
Goodwill, net, ending balance 493.2
Workplace furnishings  
Goodwill [Roll Forward]  
Goodwill, gross, beginning balance 148.7
Accumulated impairment losses (65.0)
Goodwill, net, beginning balance 83.6
Goodwill acquired 187.3
Goodwill, gross, ending balance 336.0
Accumulated impairment losses (65.0)
Goodwill, net, ending balance 270.9
Residential building products  
Goodwill [Roll Forward]  
Goodwill, gross, beginning balance 222.4
Accumulated impairment losses (0.1)
Goodwill, net, beginning balance 222.3
Goodwill acquired 0.0
Goodwill, gross, ending balance 222.4
Accumulated impairment losses (0.1)
Goodwill, net, ending balance $ 222.3