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Restructuring and Impairment - Schedule of Restructuring and Impairment (Details) - USD ($) $ in Millions | 12 Months Ended
--- | ---
Dec. 30, 2023 | Dec. 31, 2022 | Jan. 01, 2022
Restructuring Cost and Reserve [Line Items] |  |  |
Restructuring costs | $ 45.7 | $ 15.5 | $ 14.0
Inventory valuation | Workplace Furnishings |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |
Restructuring costs | (0.3) | 8.1 | 7.4
Facility set-up costs |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |
Restructuring costs | (9.8) |  |
Facility set-up costs | Workplace Furnishings |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |
Restructuring costs | 1.2 | 0.7 | 0.2
Long-lived asset charges | Workplace Furnishings |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |
Restructuring costs | 2.3 | 5.2 | 0.0
Exit costs | Workplace Furnishings |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |
Restructuring costs | 9.2 | 0.5 | 0.2
Exit costs | General Corporate |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |
Restructuring costs | 0.8 | 0.0 | 0.3
Goodwill and intangible asset impairment | Workplace Furnishings |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |
Restructuring costs | 31.0 | 0.0 | 5.8
Investment impairment | General Corporate |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |
Restructuring costs | $ 1.5 | $ 1.0 | $ 0.0

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