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Restructuring and Asset Impairments - Schedule of Restructuring and Restructuring-Related Asset Impairment Expenses by Type Incurred and by Reportable Segment (Details) - USD ($) $ in Thousands | 3 Months Ended
--- | ---
Mar. 30, 2025 | Mar. 31, 2024
Restructuring Cost and Reserve [Line Items] |  |
Restructuring and restructuring-related asset impairment charges | $ 13,581 | $ 31,010
Other asset impairments | 0 | 0
Restructuring/Asset impairment charges | 13,581 | 31,010
Operating Segments | Consumer Packaging |  |
Restructuring Cost and Reserve [Line Items] |  |
Restructuring and restructuring-related asset impairment charges | 1,229 | 4,317
Operating Segments | Industrial Paper Packaging |  |
Restructuring Cost and Reserve [Line Items] |  |
Restructuring and restructuring-related asset impairment charges | 12,535 | 22,603
All Other |  |
Restructuring Cost and Reserve [Line Items] |  |
Restructuring and restructuring-related asset impairment charges | (32) | 1,148
Corporate |  |
Restructuring Cost and Reserve [Line Items] |  |
Restructuring and restructuring-related asset impairment charges | (151) | 2,942
Severance and Termination Benefits |  |
Restructuring Cost and Reserve [Line Items] |  |
Restructuring and restructuring-related asset impairment charges | 6,998 | 17,791
Restructuring/Asset impairment charges | 6,998 |
Asset Impairment/Disposal of Assets |  |
Restructuring Cost and Reserve [Line Items] |  |
Restructuring and restructuring-related asset impairment charges | 5,101 | 8,122
Restructuring/Asset impairment charges | 5,101 |
Other Costs |  |
Restructuring Cost and Reserve [Line Items] |  |
Restructuring and restructuring-related asset impairment charges | 1,482 | $ 5,097
Restructuring/Asset impairment charges | $ 1,482 |

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