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Restructuring and Asset Impairment - Restructuring and Restructuring-related Asset Impairment Expenses by Type Incurred and by Reportable Segment (Details) - USD ($) $ in Thousands	3 Months Ended
	Apr. 04, 2021	Mar. 29, 2020
Restructuring Cost and Reserve [Line Items]
Restructuring and restructuring-related asset impairment charges	$ 2,697	$ 12,599
Other asset impairments	4,149	0
Restructuring/Asset Impairment Charges	6,846	12,599
Consumer Packaging
Restructuring Cost and Reserve [Line Items]
Other asset impairments	1,750
All Other
Restructuring Cost and Reserve [Line Items]
Other asset impairments	2,399
Operating Segments | Consumer Packaging
Restructuring Cost and Reserve [Line Items]
Restructuring and restructuring-related asset impairment charges	1,085	2,202
Operating Segments | Industrial Paper Packaging
Restructuring Cost and Reserve [Line Items]
Restructuring and restructuring-related asset impairment charges	1,433	5,510
Operating Segments | All Other
Restructuring Cost and Reserve [Line Items]
Restructuring and restructuring-related asset impairment charges	165	3,359
Corporate
Restructuring Cost and Reserve [Line Items]
Restructuring and restructuring-related asset impairment charges	14	1,528
Severance and Termination Benefits
Restructuring Cost and Reserve [Line Items]
Restructuring and restructuring-related asset impairment charges	1,428	10,100
Asset Impairment/ Disposal of Assets
Restructuring Cost and Reserve [Line Items]
Restructuring and restructuring-related asset impairment charges	(864)	2,686
Other Costs
Restructuring Cost and Reserve [Line Items]
Restructuring and restructuring-related asset impairment charges	$ 2,133	$ (187)

X

- Definition

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.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 360
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=109226691&loc=d3e2921-110230

Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 28
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=121586364&loc=d3e3602-108585

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Amount, after cash payment, of expenses associated with exit or disposal activities pursuant to an authorized plan. Excludes expenses related to a discontinued operation or an asset retirement obligation.

+ References

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-Publisher FASB
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-Topic 230
-SubTopic 10
-Section 45
-Paragraph 28
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Amount, after cash payment, of expenses associated with exit or disposal activities pursuant to an authorized plan and expenses resulting from the write-down of assets. Excludes expenses related to a business combination, a discontinued operation or an asset retirement obligation.

+ References

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-SubTopic 10
-Section 45
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