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Restructuring and Integration Expense - Additional Information (Details) - USD ($) | 3 Months Ended | 12 Months Ended | 45 Months Ended
--- | --- | --- | ---
Aug. 28, 2021 | Aug. 29, 2020 | May 29, 2021 | May 30, 2020 | Jun. 01, 2019 | Feb. 27, 2021
Restructuring Cost and Reserve [Line Items] |  |  |  |  |  |
Restructuring expense | $ 0 | $ (1,200,000) |  |  |  |
Gain on disposition of assets | 3,400,000 |  |  |  |  |
Knoll |  |  |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |  |  |
Restructuring expense | 0 | 0 |  |  |  |
International Contract |  |  |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |  |  |
Restructuring expense | 0 | (2,800,000) |  |  |  |
Americas Contract |  |  |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |  |  |
Restructuring expense | 0 | 1,600,000 |  |  |  |
Global Retail |  |  |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |  |  |
Restructuring expense | 0 | 0 |  |  |  |
Knoll Integration |  |  |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |  |  |
Restructuring expense | 55,600,000 | 0 |  |  |  |
Knoll Integration | Severance and Employee-Related |  |  |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |  |  |
Restructuring expense | 30,500,000 |  |  |  |  |
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 | 11,700,000 |  |  |  |  |
Knoll Integration | Exit or Disposal Activities |  |  |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |  |  |
Restructuring expense | 0 |  |  |  |  |
Knoll Integration | Knoll |  |  |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |  |  |
Restructuring and related cost, expected cost | 100,000,000 |  |  |  |  |
Restructuring expense | 29,400,000 | 0 |  |  |  |
Knoll Integration | International Contract |  |  |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |  |  |
Restructuring expense | 0 | 0 |  |  |  |
Knoll Integration | Americas Contract |  |  |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |  |  |
Restructuring expense | 1,000,000.0 | 0 |  |  |  |
Knoll Integration | Global Retail |  |  |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |  |  |
Restructuring expense | 0 | $ 0 |  |  |  |
Facilities Consolidation Plan | International Contract | Exit or Disposal Activities |  |  |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |  |  |
Cost savings | 3,000,000 |  |  |  |  |
Restructuring costs and asset impairment charges | 1,900,000 |  | $ 1,900,000 | $ 1,900,000 | $ 1,900,000 | $ 5,900,000
Restructuring and related cost, expected cost remaining | 0 |  |  |  |  |
Nemschoff Plan | Americas Contract |  |  |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |  |  |
Restructuring expense | 100,000 |  |  |  |  |
Restructuring and related cost, expected cost remaining | 0 |  |  |  |  |
Restructuring expenses | 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 |  |  |  |  |
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-Related |  |  |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |  |  |
Restructuring expense | 0 |  | $ 3,400,000 |  |  |
Cost savings | 40,000,000 |  |  |  |  |
Restructuring expenses | $ 18,700,000 |  |  |  |  |

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