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Revenue from Contracts with Customers - Revenue Disaggregated By Product Type And Reportable Segment (Details) - USD ($) $ in Millions	12 Months Ended
	Jun. 03, 2023	May 28, 2022	May 29, 2021
Disaggregation of Revenue [Line Items]
Net sales	$ 4,087.1	$ 3,946.0	$ 2,465.1
Workplace
Disaggregation of Revenue [Line Items]
Net sales	1,559.7	1,484.4	855.1
Performance Seating
Disaggregation of Revenue [Line Items]
Net sales	900.7	942.8	778.3
Lifestyle
Disaggregation of Revenue [Line Items]
Net sales	1,400.0	1,286.6	696.2
Other
Disaggregation of Revenue [Line Items]
Net sales	226.7	232.2	$ 135.5
Americas Contract
Disaggregation of Revenue [Line Items]
Net sales	2,026.1	1,929.1
Americas Contract | Workplace
Disaggregation of Revenue [Line Items]
Net sales	1,305.8	1,229.2
Americas Contract | Performance Seating
Disaggregation of Revenue [Line Items]
Net sales	437.8	442.6
Americas Contract | Lifestyle
Disaggregation of Revenue [Line Items]
Net sales	257.9	221.2
Americas Contract | Other
Disaggregation of Revenue [Line Items]
Net sales	24.6	36.1
International Contract and Specialty
Disaggregation of Revenue [Line Items]
Net sales	1,017.3	928.5
International Contract and Specialty | Workplace
Disaggregation of Revenue [Line Items]
Net sales	170.1	143.7
International Contract and Specialty | Performance Seating
Disaggregation of Revenue [Line Items]
Net sales	252.2	242.0
International Contract and Specialty | Lifestyle
Disaggregation of Revenue [Line Items]
Net sales	394.5	348.6
International Contract and Specialty | Other
Disaggregation of Revenue [Line Items]
Net sales	200.5	194.2
Global Retail
Disaggregation of Revenue [Line Items]
Net sales	1,043.7	1,088.4
Global Retail | Workplace
Disaggregation of Revenue [Line Items]
Net sales	83.8	111.5
Global Retail | Performance Seating
Disaggregation of Revenue [Line Items]
Net sales	210.7	258.2
Global Retail | Lifestyle
Disaggregation of Revenue [Line Items]
Net sales	747.6	716.8
Global Retail | Other
Disaggregation of Revenue [Line Items]
Net sales	$ 1.6	$ 1.9

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Amount, excluding tax collected from customer, of revenue from satisfaction of performance obligation by transferring promised good or service to customer. Tax collected from customer is tax assessed by governmental authority that is both imposed on and concurrent with specific revenue-producing transaction, including, but not limited to, sales, use, value added and excise.

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