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Segments - Reconciliation of Net Earnings to Total Company Adjusted EBITDA-Depreciation and Restructuring Expense (Details) - USD ($) $ in Millions | 3 Months Ended
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Mar. 31, 2024 | Mar. 31, 2023
Depreciation and Amortization [Abstract] |  |
Total Company depreciation and amortization | $ 68.4 | $ 73.9
Depreciation and amortization | 60.9 | 68.9
Share-based incentive compensation | 8.7 | 18.0
Total Company restructuring charges | 15.5 | (1.2)
Liquibox |  |
Depreciation and Amortization [Abstract] |  |
Liquibox intangible amortization | (7.5) | (5.0)
Food |  |
Depreciation and Amortization [Abstract] |  |
Total Company restructuring charges | 8.6 | (0.9)
Food | Operating Segments |  |
Depreciation and Amortization [Abstract] |  |
Total Company depreciation and amortization | 46.9 | 46.7
Protective |  |
Depreciation and Amortization [Abstract] |  |
Total Company restructuring charges | 6.9 | (0.3)
Protective | Operating Segments |  |
Depreciation and Amortization [Abstract] |  |
Total Company depreciation and amortization | $ 21.5 | $ 27.2

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