Segment Reporting - Segment Financial Information (Details) - USD ($) $ in Thousands	3 Months Ended
Mar. 31, 2019	Apr. 01, 2018
Segment Reporting Information [Line Items]
Net sales	$ 1,351,705	$ 1,304,187
Operating profit	116,888	110,098
Restructuring/Asset impairment charges	(10,672)	(3,063)
Consumer Packaging
Segment Reporting Information [Line Items]
Net sales	589,716	569,852
Display and Packaging
Segment Reporting Information [Line Items]
Net sales	137,554	142,658
Paper and Industrial Converted Products
Segment Reporting Information [Line Items]
Net sales	496,037	460,653
Protective Solutions
Segment Reporting Information [Line Items]
Net sales	128,398	131,024
Operating Segments \| Consumer Packaging
Segment Reporting Information [Line Items]
Net sales	589,716	569,852
Operating profit	62,115	61,088
Operating Segments \| Display and Packaging
Segment Reporting Information [Line Items]
Net sales	137,554	142,658
Operating profit	6,454	1,732
Operating Segments \| Paper and Industrial Converted Products
Segment Reporting Information [Line Items]
Net sales	496,037	460,653
Operating profit	48,387	39,781
Operating Segments \| Protective Solutions
Segment Reporting Information [Line Items]
Net sales	128,398	131,024
Operating profit	11,004	10,680
Intersegment Sales
Segment Reporting Information [Line Items]
Net sales	36,204	36,393
Intersegment Sales \| Consumer Packaging
Segment Reporting Information [Line Items]
Net sales	921	739
Intersegment Sales \| Display and Packaging
Segment Reporting Information [Line Items]
Net sales	1,167	538
Intersegment Sales \| Paper and Industrial Converted Products
Segment Reporting Information [Line Items]
Net sales	33,654	34,543
Intersegment Sales \| Protective Solutions
Segment Reporting Information [Line Items]
Net sales	462	573
Segment Reconciling Items
Segment Reporting Information [Line Items]
Other, net	$ (400)	$ (120)

The net result for the period of deducting operating expenses from operating revenues.

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The total amount of other operating cost and expense items that are associated with the entity's normal revenue producing operation.

+ References

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 220
-SubTopic 10
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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

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
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Amount, excluding tax collected from customer, of revenue from satisfaction of performance obligation by transferring promised good or service to customer. Tax collected from customer is tax assessed by governmental authority that is both imposed on and concurrent with specific revenue-producing transaction, including, but not limited to, sales, use, value added and excise.

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Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 606
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-Section 50
-Paragraph 4
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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

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