Revenue from Contracts with Customers - Schedule of Disaggregation of Revenue (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 29, 2024	Jul. 01, 2023	Jun. 29, 2024	Jul. 01, 2023
Disaggregation of Revenue [Line Items]
Net sales	$ 623.7	$ 563.5	$ 1,211.7	$ 1,042.5
Workplace furnishings
Disaggregation of Revenue [Line Items]
Net sales	480.2	413.0	920.0	712.7
Workplace furnishings | Systems and storage
Disaggregation of Revenue [Line Items]
Net sales	290.7	251.4	570.3	433.7
Workplace furnishings | Seating
Disaggregation of Revenue [Line Items]
Net sales	145.4	123.4	271.4	216.9
Workplace furnishings | Other
Disaggregation of Revenue [Line Items]
Net sales	44.0	38.3	78.3	62.1
Residential building products
Disaggregation of Revenue [Line Items]
Net sales	$ 143.5	$ 150.4	$ 291.7	$ 329.8