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Goodwill and Indefinite-lived Intangibles - Additional Information (Details) - USD ($) $ in Millions | Aug. 28, 2021 | Jul. 19, 2021 | May 29, 2021 | Mar. 31, 2021
--- | --- | --- | --- | ---
Goodwill [Line Items] |  |  |  |
Goodwill | $ 1,283.9 |  | $ 364.2 |
Indefinite-lived intangibles | 493.0 |  | $ 97.6 |
Knoll |  |  |  |
Goodwill [Line Items] |  |  |  |
Goodwill |  | $ 925.9 |  |
HAY trade name |  |  |  |
Goodwill [Line Items] |  |  |  |
Indefinite-lived intangibles |  |  |  | $ 41.7
Indefinite-lived intangible assets (excluding goodwill), fair value disclosure | 43.8 |  |  |
Reporting unit, amount of fair value in excess of carrying amount | $ 2.1 |  |  |
Reporting unit, percentage of fair value in excess of carrying amount | 5.00% |  |  |

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