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Restructuring and Integration Expense - Additional Information (Details)	3 Months Ended			9 Months Ended		12 Months Ended	24 Months Ended	30 Months Ended	57 Months Ended
	Feb. 26, 2022 USD ($) position	Aug. 28, 2021 USD ($)	Feb. 27, 2021 USD ($)	Feb. 26, 2022 USD ($) position	Feb. 27, 2021 USD ($)	May 29, 2021 USD ($)	Feb. 26, 2022 USD ($) position	Feb. 26, 2022 USD ($) position	Feb. 26, 2022 USD ($) position
Restructuring Cost and Reserve [Line Items]
Restructuring expense	$ 0		$ 300,000	$ 0	$ 1,500,000
(Gain) loss on sales of property and dealers		$ 3,400,000		2,000,000.0	(200,000)
Knoll
Restructuring Cost and Reserve [Line Items]
Restructuring expense	0		0	0	0
International Contract
Restructuring Cost and Reserve [Line Items]
Restructuring expense	0		100,000	0	(1,100,000)
Americas Contract
Restructuring Cost and Reserve [Line Items]
Restructuring expense	0		200,000	0	2,600,000
Global Retail
Restructuring Cost and Reserve [Line Items]
Restructuring expense	0		0	0	0
Knoll Integration
Restructuring Cost and Reserve [Line Items]
Restructuring expense	5,900,000		0	101,700,000	0
Knoll Integration | Severance and Employee Benefit
Restructuring Cost and Reserve [Line Items]
Restructuring expense				49,900,000
Knoll Integration | Exit and Disposal Activities
Restructuring Cost and Reserve [Line Items]
Restructuring expense				15,500,000
Knoll Integration | Non-Cash Debt Extinguishment Member
Restructuring Cost and Reserve [Line Items]
Restructuring expense				13,400,000
Knoll Integration | Other Restructuring
Restructuring Cost and Reserve [Line Items]
Restructuring expense				22,900,000
Knoll Integration | Knoll
Restructuring Cost and Reserve [Line Items]
Restructuring expense	2,600,000		0	59,000,000.0	0
Knoll Integration | Knoll | Minimum
Restructuring Cost and Reserve [Line Items]
Restructuring and related cost, expected cost	100,000,000			100,000,000			$ 100,000,000	$ 100,000,000	$ 100,000,000
Knoll Integration | Knoll | Maximum
Restructuring Cost and Reserve [Line Items]
Restructuring and related cost, expected cost	120,000,000			120,000,000			120,000,000	120,000,000	120,000,000
Knoll Integration | International Contract
Restructuring Cost and Reserve [Line Items]
Restructuring expense	400,000		0	1,100,000	0
Knoll Integration | Americas Contract
Restructuring Cost and Reserve [Line Items]
Restructuring expense	500,000		0	4,900,000	0
Knoll Integration | Global Retail
Restructuring Cost and Reserve [Line Items]
Restructuring expense	0		$ 0	500,000	$ 0
Facilities Consolidation Plan | International Contract | Exit and Disposal Activities
Restructuring Cost and Reserve [Line Items]
Cost savings				3,000,000
Restructuring costs and asset impairment charges						$ 1,900,000			5,900,000
Restructuring and related cost, expected cost remaining	0			0			0	0	0
Nemschoff Plan | Americas Contract
Restructuring Cost and Reserve [Line Items]
Restructuring expense								100,000
Restructuring and related cost, expected cost remaining	0			0			0	0	0
Restructuring expenses	3,100,000			3,100,000			3,100,000	3,100,000	3,100,000
North American Sales and Global Product Teams Plan | Americas Contract
Restructuring Cost and Reserve [Line Items]
Restructuring and related cost, expected cost remaining	0			0			0	0	0
North American Sales and Global Product Teams Plan | Global Retail
Restructuring Cost and Reserve [Line Items]
Restructuring costs and asset impairment charges								2,600,000
May 2020 Restructuring Plan | Severance and Employee Benefit
Restructuring Cost and Reserve [Line Items]
Restructuring expense				0			3,400,000
Cost savings				40,000,000
Restructuring expenses	$ 18,700,000			$ 18,700,000			$ 18,700,000	$ 18,700,000	$ 18,700,000
Number of full-time positions eliminated | position	400			400			400	400	400

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