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Restructuring and Asset Impairments - Restructuring and Restructuring-related Asset Impairment Expenses by Type Incurred and by Reportable Segment (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Oct. 01, 2023	Oct. 02, 2022	Oct. 01, 2023	Oct. 02, 2022
Restructuring Cost and Reserve [Line Items]
Restructuring and restructuring-related asset impairment charges	$ 18,110	$ 20,652	$ 52,981	$ 33,262
Other asset impairments	0	0	0	10,095
Restructuring/Asset impairment charges	18,110	20,652	52,981	43,357
Consumer Packaging
Restructuring Cost and Reserve [Line Items]
Other asset impairments				930
All Other
Restructuring Cost and Reserve [Line Items]
Other asset impairments				9,165
Operating Segments \| Consumer Packaging
Restructuring Cost and Reserve [Line Items]
Restructuring and restructuring-related asset impairment charges	8,288	4,350	11,792	8,529
Operating Segments \| Industrial Paper Packaging
Restructuring Cost and Reserve [Line Items]
Restructuring and restructuring-related asset impairment charges	6,430	7,674	32,961	10,029
Operating Segments \| All Other
Restructuring Cost and Reserve [Line Items]
Restructuring and restructuring-related asset impairment charges	1,766	18	5,875	(399)
Corporate
Restructuring Cost and Reserve [Line Items]
Restructuring and restructuring-related asset impairment charges	1,626	8,610	2,353	15,103
Severance and termination benefits
Restructuring Cost and Reserve [Line Items]
Restructuring and restructuring-related asset impairment charges	9,736	9,265	19,370	13,578
Asset impairments
Restructuring Cost and Reserve [Line Items]
Restructuring and restructuring-related asset impairment charges	6,123	3,301	26,122	4,533
Other costs
Restructuring Cost and Reserve [Line Items]
Restructuring and restructuring-related asset impairment charges	$ 2,251	$ 8,086	$ 7,489	$ 15,151