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Revenue from Contracts with Customers - Schedule of Disaggregation of Revenue (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 29, 2025	Mar. 30, 2024
Disaggregation of Revenue [Line Items]
Net sales	$ 599.8	$ 588.0
Workplace furnishings
Disaggregation of Revenue [Line Items]
Net sales	441.1	439.8
Workplace furnishings | Systems, storage, and tables
Disaggregation of Revenue [Line Items]
Net sales	275.2	279.5
Workplace furnishings | Seating
Disaggregation of Revenue [Line Items]
Net sales	133.5	126.0
Workplace furnishings | Other
Disaggregation of Revenue [Line Items]
Net sales	32.3	34.2
Residential building products
Disaggregation of Revenue [Line Items]
Net sales	$ 158.7	$ 148.2

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