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Acquisitions and Divestitures - Narrative (Details) - USD ($) $ in Millions | 9 Months Ended | 16 Months Ended |
--- | --- | --- | ---
Sep. 30, 2023 | Sep. 28, 2024 | Sep. 12, 2023
Poppin |  |  |
Schedule Of Asset Acquisition [Line Items] |  |  |
Cash and cash equivalents |  |  | $ 2.7
Poppin | Disposal Group, Disposed of by Sale, Not Discontinued Operations |  |  |
Schedule Of Asset Acquisition [Line Items] |  |  |
Inventories |  |  | 9.7
Prepaid expenses and other current assets |  |  | 3.1
Accounts payable and accrued expenses |  |  | 7.0
Current lease obligations - operating |  |  | $ 3.0
Kimball International, Inc |  |  |
Schedule Of Asset Acquisition [Line Items] |  |  |
Transaction expenses |  | $ 41.1 |
Kimball International, Inc | Long-Term Debt |  |  |
Schedule Of Asset Acquisition [Line Items] |  |  |
Transaction costs |  | 2.8 |
Kimball International, Inc | Other Noncurrent Assets |  |  |
Schedule Of Asset Acquisition [Line Items] |  |  |
Transaction costs |  | 0.2 |
Kimball International, Inc | Additional Paid-in Capital |  |  |
Schedule Of Asset Acquisition [Line Items] |  |  |
Transaction costs |  | 0.3 |
Kimball International, Inc | General Corporate |  |  |
Schedule Of Asset Acquisition [Line Items] |  |  |
Transaction expenses | $ 26.4 | 28.6 |
Kimball International, Inc | Workplace furnishings |  |  |
Schedule Of Asset Acquisition [Line Items] |  |  |
Transaction expenses | $ 11.1 | $ 12.5 |

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