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Revenue from Contracts with Customers - Revenue Disaggregated By Product Type And Reportable Segment (Details) - USD ($) $ in Millions	3 Months Ended
	Aug. 29, 2020	Aug. 31, 2019
Disaggregation of Revenue [Line Items]
Net sales	$ 626.8	$ 670.9
North America Contract:
Disaggregation of Revenue [Line Items]
Net sales	338.8	458.4
North America Contract: | Workplace
Disaggregation of Revenue [Line Items]
Net sales	207.1	283.2
North America Contract: | Performance Seating
Disaggregation of Revenue [Line Items]
Net sales	77.5	111.9
North America Contract: | Lifestyle
Disaggregation of Revenue [Line Items]
Net sales	22.4	23.5
North America Contract: | Other
Disaggregation of Revenue [Line Items]
Net sales	31.8	39.8
International Contract:
Disaggregation of Revenue [Line Items]
Net sales	153.7	113.9
International Contract: | Workplace
Disaggregation of Revenue [Line Items]
Net sales	41.9	47.6
International Contract: | Performance Seating
Disaggregation of Revenue [Line Items]
Net sales	62.7	57.0
International Contract: | Lifestyle
Disaggregation of Revenue [Line Items]
Net sales	46.7	6.3
International Contract: | Other
Disaggregation of Revenue [Line Items]
Net sales	2.4	3.0
Retail:
Disaggregation of Revenue [Line Items]
Net sales	134.3	98.6
Retail: | Workplace
Disaggregation of Revenue [Line Items]
Net sales	1.9	1.0
Retail: | Performance Seating
Disaggregation of Revenue [Line Items]
Net sales	47.5	9.1
Retail: | Lifestyle
Disaggregation of Revenue [Line Items]
Net sales	84.7	88.5
Retail: | Other
Disaggregation of Revenue [Line Items]
Net sales	$ 0.2	$ 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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