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Revenue from Contracts with Customers - Revenue Disaggregated By Product Type And Reportable Segment (Details) - USD ($) $ in Millions	12 Months Ended
	May 28, 2022	May 29, 2021	May 30, 2020
Disaggregation of Revenue [Line Items]
Net sales	$ 3,946.0	$ 2,465.1	$ 2,486.6
Intersegment Eliminations
Disaggregation of Revenue [Line Items]
Net sales	(27.4)	0.0	0.0
Workplace
Disaggregation of Revenue [Line Items]
Net sales	1,484.4	855.1	1,135.8
Performance Seating
Disaggregation of Revenue [Line Items]
Net sales	942.8	778.3	637.0
Lifestyle
Disaggregation of Revenue [Line Items]
Net sales	1,314.0	696.2	546.6
Other
Disaggregation of Revenue [Line Items]
Net sales	232.2	135.5	167.2
Americas Contract
Disaggregation of Revenue [Line Items]
Net sales	1,444.9	1,301.3
Americas Contract | Workplace
Disaggregation of Revenue [Line Items]
Net sales	797.9	738.3
Americas Contract | Performance Seating
Disaggregation of Revenue [Line Items]
Net sales	366.8	307.8
Americas Contract | Lifestyle
Disaggregation of Revenue [Line Items]
Net sales	154.8	127.2
Americas Contract | Other
Disaggregation of Revenue [Line Items]
Net sales	125.4	128.0
International Contract
Disaggregation of Revenue [Line Items]
Net sales	483.2	399.5
International Contract | Workplace
Disaggregation of Revenue [Line Items]
Net sales	126.2	106.3
International Contract | Performance Seating
Disaggregation of Revenue [Line Items]
Net sales	238.3	204.7
International Contract | Lifestyle
Disaggregation of Revenue [Line Items]
Net sales	108.2	82.4
International Contract | Other
Disaggregation of Revenue [Line Items]
Net sales	10.5	6.1
Global Retail
Disaggregation of Revenue [Line Items]
Net sales	856.8	764.3
Global Retail | Workplace
Disaggregation of Revenue [Line Items]
Net sales	13.1	10.5
Global Retail | Performance Seating
Disaggregation of Revenue [Line Items]
Net sales	243.0	265.8
Global Retail | Lifestyle
Disaggregation of Revenue [Line Items]
Net sales	598.8	486.6
Global Retail | Other
Disaggregation of Revenue [Line Items]
Net sales	1.9	1.4
Knoll
Disaggregation of Revenue [Line Items]
Net sales	1,188.5	0.0	$ 0.0
Knoll | Workplace
Disaggregation of Revenue [Line Items]
Net sales	547.2	0.0
Knoll | Performance Seating
Disaggregation of Revenue [Line Items]
Net sales	94.7	0.0
Knoll | Lifestyle
Disaggregation of Revenue [Line Items]
Net sales	452.2	0.0
Knoll | Other
Disaggregation of Revenue [Line Items]
Net sales	$ 94.4	$ 0.0

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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.

+ References

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