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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		6 Months Ended
	Jul. 02, 2023	Jul. 03, 2022	Jul. 02, 2023	Jul. 03, 2022
Restructuring Cost and Reserve [Line Items]
Restructuring and restructuring-related asset impairment charges	$ 6,057	$ 6,857	$ 34,871	$ 12,610
Other asset impairments	0	3,706	0	10,095
Restructuring and asset impairment charges	6,057	10,563	34,871	22,705
Consumer Packaging
Restructuring Cost and Reserve [Line Items]
Other asset impairments		254		930
All Other
Restructuring Cost and Reserve [Line Items]
Other asset impairments		3,452		9,165
Operating Segments \| Consumer Packaging
Restructuring Cost and Reserve [Line Items]
Restructuring and restructuring-related asset impairment charges	1,928	2,544	3,504	4,179
Operating Segments \| Industrial Paper Packaging
Restructuring Cost and Reserve [Line Items]
Restructuring and restructuring-related asset impairment charges	1,987	1,007	26,531	2,355
Operating Segments \| All Other
Restructuring Cost and Reserve [Line Items]
Restructuring and restructuring-related asset impairment charges	2,952	(495)	4,109	(417)
Corporate
Restructuring Cost and Reserve [Line Items]
Restructuring and restructuring-related asset impairment charges	(810)	3,801	727	6,493
Severance and termination benefits
Restructuring Cost and Reserve [Line Items]
Restructuring and restructuring-related asset impairment charges	4,118	2,214	9,634	4,313
Asset impairments
Restructuring Cost and Reserve [Line Items]
Restructuring and restructuring-related asset impairment charges	806	787	19,999	1,232
Other costs
Restructuring Cost and Reserve [Line Items]
Restructuring and restructuring-related asset impairment charges	$ 1,133	$ 3,856	$ 5,238	$ 7,065