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

The charge against earnings resulting from the write down of long lived assets other than goodwill due to the difference between the carrying value and lower fair value.

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