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Acquisitions - Schedule of Finite-Lived and Indefinite-Lived Intangible Assets Acquired as Part of Business Combination (Details) - USD ($) $ in Millions |  | 3 Months Ended
--- | --- | ---
Jul. 19, 2021 | Aug. 28, 2021
Business Acquisition [Line Items] |  |
Trade name - indefinite lived |  | $ 396.9
Knoll |  |
Business Acquisition [Line Items] |  |
Total | $ 770.4 |
Knoll | Trade name - indefinite lived |  |
Business Acquisition [Line Items] |  |
Trade name - indefinite lived | $ 397.0 |
Knoll | Backlog |  |
Business Acquisition [Line Items] |  |
Useful Life (years) | 1 year |
Fair value of finite-lived intangible assets | $ 53.4 |
Knoll | Trade name - indefinite lived |  |
Business Acquisition [Line Items] |  |
Fair value of finite-lived intangible assets | $ 23.0 |
Knoll | Trade name - indefinite lived | Minimum |  |
Business Acquisition [Line Items] |  |
Useful Life (years) | 5 years |
Knoll | Trade name - indefinite lived | Maximum |  |
Business Acquisition [Line Items] |  |
Useful Life (years) | 10 years |
Knoll | Designs |  |
Business Acquisition [Line Items] |  |
Fair value of finite-lived intangible assets | $ 29.0 |
Knoll | Designs | Minimum |  |
Business Acquisition [Line Items] |  |
Useful Life (years) | 9 years |
Knoll | Designs | Maximum |  |
Business Acquisition [Line Items] |  |
Useful Life (years) | 15 years |
Knoll | Customer Relationships |  |
Business Acquisition [Line Items] |  |
Fair value of finite-lived intangible assets | $ 268.0 |
Knoll | Customer Relationships | Minimum |  |
Business Acquisition [Line Items] |  |
Useful Life (years) | 2 years |
Knoll | Customer Relationships | Maximum |  |
Business Acquisition [Line Items] |  |
Useful Life (years) | 15 years |

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- Definition Weighted average amortization period of finite-lived intangible assets acquired either individually or as part of a group of assets, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 1 -Subparagraph (a)(3) -URI http://asc.fasb.org/extlink&oid=66006027&loc=d3e16265-109275 + Details
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- Definition Amount of increase in assets, excluding financial assets, lacking physical substance with a definite life, from an acquisition. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 1 -Subparagraph (a)(1) -URI http://asc.fasb.org/extlink&oid=66006027&loc=d3e16265-109275 + Details
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