Sonoco Products (SON) 10-Q 30 Oct 20 2020 Q3 Quarterly report Financial data

Cover Page

Cover Page - shares	9 Months Ended
	Sep. 27, 2020	Oct. 16, 2020
Cover [Abstract]
Document Type	10-Q
Document Quarterly Report	true
Document Period End Date	Sep. 27, 2020
Document Transition Report	false
Entity File Number	001-11261
Entity Registrant Name	SONOCO PRODUCTS COMPANY
Entity Incorporation, State or Country Code	SC
Entity Tax Identification Number	57-0248420
Entity Address, Address Line One	1 N. Second St.
Entity Address, City or Town	Hartsville
Entity Address, State or Province	SC
Entity Address, Postal Zip Code	29550
City Area Code	843
Local Phone Number	383-7000
Title of 12(b) Security	No par value common stock
Trading Symbol	SON
Security Exchange Name	NYSE
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Filer Category	Large Accelerated Filer
Entity Small Business	false
Entity Emerging Growth Company	false
Entity Shell Company	false
Entity Common Stock, Shares Outstanding		100,416,612
Amendment Flag	false
Current Fiscal Year End Date	--12-31
Entity Central Index Key	0000091767
Document Fiscal Period Focus	Q3
Document Fiscal Year Focus	2020

CONDENSED CONSOLIDATED BALANCE

CONDENSED CONSOLIDATED BALANCE SHEETS (unaudited) - USD ($) $ in Thousands	Sep. 27, 2020	Dec. 31, 2019
Current Assets
Cash and cash equivalents	$ 782,679	$ 145,283	[1]
Trade accounts receivable, net of allowances	693,612	698,149	[1]
Other receivables	92,731	113,754	[1]
Inventories, net:
Finished and in process	151,667	172,223	[1]
Materials and supplies	294,160	331,585	[1]
Assets held for sale	202,069	0
Prepaid expenses	66,516	60,202	[1]
Total Current Assets	2,283,434	1,521,196	[1]
Property, Plant and Equipment, Net	1,227,122	1,286,842	[1]
Goodwill	1,369,283	1,429,346	[1]
Other Intangible Assets, Net	374,374	388,292	[1]
Deferred Income Taxes	41,629	46,502	[1]
Right of Use Asset-Operating Leases	306,077	298,393	[1]
Other Assets	165,313	155,718	[1]
Total Assets	5,767,232	5,126,289	[1]
Current Liabilities
Payable to suppliers	506,170	537,764	[1]
Accrued expenses and other	375,972	367,114	[1]
Notes payable and current portion of long-term debt	508,960	488,234	[1]
Accrued taxes	14,092	11,380	[1]
Liabilities held for sale	93,849	0
Total Current Liabilities	1,499,043	1,404,492	[1]
Long-term Debt, Net of Current Portion	1,627,037	1,193,135	[1]
Noncurrent Operating Lease Liabilities	268,790	253,992	[1]
Pension and Other Postretirement Benefits	303,623	304,798	[1]
Deferred Income Taxes	94,831	76,206	[1]
Other Liabilities	92,575	77,961	[1]
Common stock, no par value
Authorized 300,000 shares 100,416 and 100,198 shares issued and outstanding at September 27, 2020 and December 31, 2019, respectively	7,175	7,175	[1]
Capital in excess of stated value	310,912	310,778	[1]
Accumulated other comprehensive loss	(837,214)	(816,803)	[1]
Retained earnings	2,390,272	2,301,532	[1]
Total Sonoco Shareholders’ Equity	1,871,145	1,802,682	[1]
Noncontrolling Interests	10,188	13,023	[1]
Total Equity	1,881,333	1,815,705	[1]
Total Liabilities and Equity	$ 5,767,232	$ 5,126,289	[1]
[1]	The year-end condensed consolidated balance sheet data was derived from audited financial statements, but does not include all disclosures required by accounting principles generally accepted in the United States of America.

CONDENSED CONSOLIDATED BALANC_2

CONDENSED CONSOLIDATED BALANCE SHEETS (unaudited) (Parenthetical) - shares	Sep. 27, 2020	Dec. 31, 2019
Statement of Financial Position [Abstract]
Common stock, shares authorized (in shares)	300,000,000	300,000,000
Common stock, shares issued (in shares)	100,416,000	100,198,000
Common stock, shares outstanding (in shares)	100,416,000	100,198,000

CONDENSED CONSOLIDATED STATEMEN

CONDENSED CONSOLIDATED STATEMENTS OF INCOME (unaudited) - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 27, 2020	Sep. 29, 2019	Sep. 27, 2020	Sep. 29, 2019
Income Statement [Abstract]
Net sales	$ 1,312,314	$ 1,353,931	$ 3,861,095	$ 4,065,357
Cost of sales	1,055,304	1,088,446	3,089,512	3,254,415
Gross profit	257,010	265,485	771,583	810,942
Selling, general and administrative expenses	126,117	120,322	371,376	395,096
Restructuring/Asset impairment charges	24,149	6,615	59,633	30,642
Operating profit	106,744	138,548	340,574	385,204
Non-operating pension costs	7,453	7,210	22,632	18,801
Interest expense	19,377	17,286	55,469	50,116
Interest income	796	2,530	2,158	4,023
Income before income taxes	80,710	116,582	264,631	320,310
Provision for income taxes	(649)	26,098	49,337	77,213
Income before equity in earnings of affiliates	81,359	90,484	215,294	243,097
Equity in earnings of affiliates, net of tax	1,939	1,799	3,230	4,240
Net income	83,298	92,283	218,524	247,337
Net loss/(income) attributable to noncontrolling interests	151	(219)	581	(451)
Net income attributable to Sonoco	$ 83,449	$ 92,064	$ 219,105	$ 246,886
Weighted average common shares outstanding:
Basic (in shares)	100,974	100,778	100,935	100,727
Diluted (in shares)	101,245	101,186	101,155	101,158
Net income attributable to Sonoco:
Basic (in usd per share)	$ 0.83	$ 0.91	$ 2.17	$ 2.45
Diluted (in usd per share)	$ 0.82	$ 0.91	$ 2.17	$ 2.44

CONDENSED CONSOLIDATED STATEM_2

CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (unaudited) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 27, 2020	Sep. 29, 2019	Sep. 27, 2020	Sep. 29, 2019
Statement of Comprehensive Income [Abstract]
Net income/(loss)	$ 83,298	$ 92,283	$ 218,524	$ 247,337
Other comprehensive income/(loss):
Foreign currency translation adjustments	24,647	(34,428)	(37,701)	(27,655)
Changes in defined benefit plans, net of tax	5,280	(16,850)	15,476	(7,887)
Changes in derivative financial instruments, net of tax	2,285	(93)	(440)	1,290
Other comprehensive income/(loss):	32,212	(51,371)	(22,665)	(34,252)
Comprehensive income:	115,510	40,912	195,859	213,085
Net loss/(income) attributable to noncontrolling interests	151	(219)	581	(451)
Other comprehensive loss attributable to noncontrolling interests	27	844	2,254	792
Comprehensive income attributable to Sonoco	$ 115,688	$ 41,537	$ 198,694	$ 213,426

CONDENSED CONSOLIDATED STATEM_3

CONDENSED CONSOLIDATED STATEMENTS OF CHANGES IN TOTAL EQUITY (unaudited) - USD ($) $ in Thousands	Total		Common Shares	Capital in Excess of Stated Value	Accumulated Other Comprehensive Loss	Retained Earnings	Noncontrolling Interests	Impact of new accounting pronouncements	Impact of new accounting pronouncementsRetained Earnings
Beginning Balance at Dec. 31, 2018	$ 1,772,278		$ 7,175	$ 304,709	$ (740,913)	$ 2,188,115	$ 13,192	$ (6,771)	$ (6,771)
Beginning balance (shares) at Dec. 31, 2018			99,829,000
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income/(loss)	73,768					73,663	105
Other comprehensive income/(loss):
Translation gain/(loss)	(2,972)				(2,852)		(120)
Defined benefit plan adjustment, net of tax	7,156				7,156
Derivative financial instruments, net of tax	1,864				1,864
Other comprehensive income/(loss)	6,048				6,168		(120)
Dividends	(41,534)					(41,534)
Dividends paid to noncontrolling interests	(214)						(214)
Issuance of stock awards	399			399
Issuance of stock awards (shares)			340,000
Shares repurchased	(7,395)			(7,395)
Shares repurchased (shares)			(133,000)
Stock-based compensation	4,560			4,560
Ending Balance at Mar. 31, 2019	1,801,139		$ 7,175	302,273	(734,745)	2,213,473	12,963
Ending balance (shares) at Mar. 31, 2019			100,036,000
Beginning Balance at Dec. 31, 2018	1,772,278		$ 7,175	304,709	(740,913)	2,188,115	13,192	(6,771)	(6,771)
Beginning balance (shares) at Dec. 31, 2018			99,829,000
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income/(loss)	247,337
Other comprehensive income/(loss):
Translation gain/(loss)	(27,655)
Defined benefit plan adjustment, net of tax	(7,887)
Derivative financial instruments, net of tax	1,290
Other comprehensive income/(loss)					(33,460)
Ending Balance at Sep. 29, 2019	1,854,313		$ 7,175	308,868	(774,373)	2,300,006	12,637
Ending balance (shares) at Sep. 29, 2019			100,082,000
Beginning Balance at Dec. 31, 2018	$ 1,772,278		$ 7,175	304,709	(740,913)	2,188,115	13,192	(6,771)	(6,771)
Beginning balance (shares) at Dec. 31, 2018			99,829,000
Other comprehensive income/(loss):
Shares repurchased (shares)	0
Ending Balance at Dec. 31, 2019	$ 1,815,705	[1]	$ 7,175	310,778	(816,803)	2,301,532	13,023	(209)	(209)
Ending balance (shares) at Dec. 31, 2019	100,198,000		100,198,000
Beginning Balance at Mar. 31, 2019	$ 1,801,139		$ 7,175	302,273	(734,745)	2,213,473	12,963
Beginning balance (shares) at Mar. 31, 2019			100,036,000
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income/(loss)	81,286					81,159	127
Other comprehensive income/(loss):
Translation gain/(loss)	9,745				9,573		172
Defined benefit plan adjustment, net of tax	1,807				1,807
Derivative financial instruments, net of tax	(481)				(481)
Other comprehensive income/(loss)	11,071				10,899		172
Dividends	(43,353)					(43,353)
Issuance of stock awards	326			326
Issuance of stock awards (shares)			58,000
Shares repurchased	(1,155)			(1,155)
Shares repurchased (shares)			(19,000)
Stock-based compensation	4,306			4,306
Ending Balance at Jun. 30, 2019	1,853,620		$ 7,175	305,750	(723,846)	2,251,279	13,262
Ending balance (shares) at Jun. 30, 2019			100,075,000
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income/(loss)	92,283					92,064	219
Other comprehensive income/(loss):
Translation gain/(loss)	(34,428)				(33,584)		(844)
Defined benefit plan adjustment, net of tax	(16,850)				(16,850)
Derivative financial instruments, net of tax	(93)				(93)
Other comprehensive income/(loss)	(51,371)				(50,527)		(844)
Dividends	(43,337)					(43,337)
Issuance of stock awards	330			330
Issuance of stock awards (shares)			9,000
Shares repurchased	(147)			(147)
Shares repurchased (shares)			(2,000)
Stock-based compensation	2,935			2,935
Ending Balance at Sep. 29, 2019	1,854,313		$ 7,175	308,868	(774,373)	2,300,006	12,637
Ending balance (shares) at Sep. 29, 2019			100,082,000
Beginning Balance at Dec. 31, 2019	$ 1,815,705	[1]	$ 7,175	310,778	(816,803)	2,301,532	13,023	(209)	(209)
Beginning balance (shares) at Dec. 31, 2019	100,198,000		100,198,000
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income/(loss)	$ 80,236					80,445	(209)
Other comprehensive income/(loss):
Translation gain/(loss)	(95,212)				(93,575)		(1,637)
Defined benefit plan adjustment, net of tax	5,780				5,780
Derivative financial instruments, net of tax	(4,555)				(4,555)
Other comprehensive income/(loss)	(93,987)				(92,350)		(1,637)
Dividends	(43,339)					(43,339)
Issuance of stock awards	376			376
Issuance of stock awards (shares)			196,000
Shares repurchased	(3,938)			(3,938)
Shares repurchased (shares)			(65,000)
Stock-based compensation	597			597
Ending Balance at Mar. 29, 2020	1,755,441		$ 7,175	307,813	(909,153)	2,338,429	11,177
Ending balance (shares) at Mar. 29, 2020			100,329,000
Beginning Balance at Dec. 31, 2019	$ 1,815,705	[1]	$ 7,175	310,778	(816,803)	2,301,532	13,023	$ (209)	$ (209)
Beginning balance (shares) at Dec. 31, 2019	100,198,000		100,198,000
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income/(loss)	$ 218,524
Other comprehensive income/(loss):
Translation gain/(loss)	(37,701)
Defined benefit plan adjustment, net of tax	15,476
Derivative financial instruments, net of tax	$ (440)
Other comprehensive income/(loss)					(20,411)
Shares repurchased (shares)	0
Ending Balance at Sep. 27, 2020	$ 1,881,333		$ 7,175	310,912	(837,214)	2,390,272	10,188
Ending balance (shares) at Sep. 27, 2020	100,416,000		100,416,000
Beginning Balance at Mar. 29, 2020	$ 1,755,441		$ 7,175	307,813	(909,153)	2,338,429	11,177
Beginning balance (shares) at Mar. 29, 2020			100,329,000
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income/(loss)	54,990					55,211	(221)
Other comprehensive income/(loss):
Translation gain/(loss)	32,864				33,454		(590)
Defined benefit plan adjustment, net of tax	4,416				4,416
Derivative financial instruments, net of tax	1,830				1,830
Other comprehensive income/(loss)	39,110				39,700		(590)
Dividends	(43,451)					(43,451)
Issuance of stock awards	287			287
Issuance of stock awards (shares)			2,000
Shares repurchased	(12)			(12)
Shares repurchased (shares)			(1,000)
Stock-based compensation	1,339			1,339
Ending Balance at Jun. 28, 2020	1,807,704		$ 7,175	309,427	(869,453)	2,350,189	10,366
Ending balance (shares) at Jun. 28, 2020			100,330,000
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income/(loss)	83,298					83,449	(151)
Other comprehensive income/(loss):
Translation gain/(loss)	24,647				24,674		(27)
Defined benefit plan adjustment, net of tax	5,280				5,280
Derivative financial instruments, net of tax	2,285				2,285
Other comprehensive income/(loss)	32,212				32,239		(27)
Dividends	(43,366)					(43,366)
Issuance of stock awards	256			256
Issuance of stock awards (shares)			150,000
Shares repurchased	(3,385)			(3,385)
Shares repurchased (shares)			(64,000)
Stock-based compensation	4,614			4,614
Ending Balance at Sep. 27, 2020	$ 1,881,333		$ 7,175	$ 310,912	$ (837,214)	$ 2,390,272	$ 10,188
Ending balance (shares) at Sep. 27, 2020	100,416,000		100,416,000
[1]	The year-end condensed consolidated balance sheet data was derived from audited financial statements, but does not include all disclosures required by accounting principles generally accepted in the United States of America.

CONDENSED CONSOLIDATED STATEM_4

CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS (unaudited) - USD ($) $ in Thousands	3 Months Ended				9 Months Ended		12 Months Ended
	Sep. 27, 2020	Mar. 29, 2020	Sep. 29, 2019	Mar. 31, 2019	Sep. 27, 2020	Sep. 29, 2019	Dec. 31, 2019
Cash Flows from Operating Activities:
Net income/(loss)	$ 83,298	$ 80,236	$ 92,283	$ 73,768	$ 218,524	$ 247,337
Adjustments to reconcile net income to net cash provided by operating activities:
Asset impairment					25,364	6,362
Depreciation, depletion and amortization					186,602	173,085
Gain on adjustment of environmental reserves					0	(10,675)
Share-based compensation expense					6,551	11,800
Equity in earnings of affiliates	(1,939)		(1,799)		(3,230)	(4,240)
Cash dividends from affiliated companies					4,367	4,002
Net (gain)/loss on disposition of assets					(3,298)	3,811
Pension and postretirement plan expense					43,146	21,837
Pension and postretirement plan contributions					(34,795)	(225,535)
Net increase in deferred taxes					10,013	32,370
Change in assets and liabilities, net of effects from acquisitions and foreign currency adjustments:
Trade accounts receivable					(42,102)	(33,574)
Inventories					10,621	(643)
Payable to suppliers					15,708	(7,183)
Prepaid expenses					(1,857)	(533)
Accrued expenses					40,854	29,611
Income taxes payable and other income tax items					(17,466)	(20,407)
Other assets and liabilities					30,499	11,393
Net cash provided by operating activities					489,501	238,818
Cash Flows from Investing Activities:
Purchases of property, plant and equipment					(116,667)	(147,012)
Cost of acquisitions, net of cash acquired					(49,262)	(111,009)
Proceeds from the sale of assets					8,240	2,887
Investment in affiliates and other, net					571	1,494
Net cash used in investing activities					(157,118)	(253,640)
Cash Flows from Financing Activities:
Proceeds from issuance of debt					1,107,127	258,834
Principal repayment of debt					(428,966)	(109,692)
Net change in commercial paper					(250,000)	12,000
Net increase/(decrease) in outstanding checks					8,544	(7,604)
Proceeds from cross-currency swap					14,480	0
Payment of contingent consideration					(3,000)	(5,000)
Cash dividends					(129,446)	(127,169)
Dividends paid to noncontrolling interests					0	(214)
Shares repurchased					(7,335)	(8,697)
Net cash provided by financing activities					311,404	12,458
Effects of Exchange Rate Changes on Cash					(6,391)	(2,172)
Net Increase/(Decrease) in Cash and Cash Equivalents					637,396	(4,536)
Cash and cash equivalents at beginning of period		$ 145,283		$ 120,389	145,283	120,389	$ 120,389
Cash and cash equivalents at end of period	$ 782,679		$ 115,853		$ 782,679	$ 115,853	$ 145,283

Basis of Interim Presentation

Basis of Interim Presentation	9 Months Ended
	Sep. 27, 2020
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Basis of Interim Presentation	Basis of Interim Presentation In the opinion of the management of Sonoco Products Company (the “Company” or “Sonoco”), the accompanying unaudited condensed consolidated financial statements contain all adjustments (consisting of only normal recurring adjustments, unless otherwise stated) necessary to state fairly the consolidated financial position, results of operations and cash flows for the interim periods reported herein. Operating results for the nine months ended September 27, 2020, are not necessarily indicative of the results that may be expected for the year ending December 31, 2020. These condensed consolidated financial statements should be read in conjunction with the consolidated financial statements and the notes thereto included in the Company’s Annual Report on Form 10-K for the fiscal year ended December 31, 2019. With respect to the unaudited condensed consolidated financial information of the Company for the three- and nine-month periods ended September 27, 2020 and September 29, 2019 included in this Form 10-Q, PricewaterhouseCoopers LLP reported that they have applied limited procedures in accordance with professional standards for a review of such information. However, their separate report dated October 30, 2020 appearing herein, states that they did not audit and they do not express an opinion on that unaudited financial information. Accordingly, the degree of reliance on their report on such information should be restricted in light of the limited nature of the review procedures applied. PricewaterhouseCoopers LLP is not subject to the liability provisions of Section 11 of the Securities Act of 1933 for their report on the unaudited financial information because that report is not a “report” or a “part” of a registration statement prepared or certified by PricewaterhouseCoopers LLP within the meaning of Sections 7 and 11 of the Act. In September 2020, the Company's Board of Directors approved the sale of the Company's European contract packaging business (Sonoco Poland Packaging Services Sp. z.o.o.). As a result, the Company has determined the criteria for classification as held for sale were met. Consequently, the assets and liabilities associated with the European contract packaging business are classified as held for sale on the Company's Condensed Consolidated Balance Sheet as of September 27, 2020. The decision to sell the European contract packaging business was made as part of the Company's efforts to simplify its operating structure in order to focus on growing its core consumer and industrial packaging businesses. This business includes six contract packaging facilities in three locations and a warehouse, all in Poland, and is reported within the Company's Display and Packaging segment. The sale does not represent a strategic shift for the Company that will have a major effect on the Company’s operations and financial results; consequently, it does not meet the criteria for reporting as a discontinued operation. In conjunction with the pending sale of the Company's European contract packaging business, the following major classes of assets and liabilities were classified as held for sale on the Company's Condensed Consolidated Balance Sheet as of September 27, 2020: Assets: Trade accounts receivable, net of allowances $ 43,411 Inventories 36,278 Other receivables 9,179 Prepaid expenses 2,516 Current assets 91,384 Property, plant and equipment, net 7,766 Goodwill 76,828 Long-term deferred income taxes 1,943 Right of Use Asset - Operating leases 23,337 Other assets 811 Noncurrent assets 110,685 Assets held for sale $ 202,069 Liabilities: Payable to suppliers $ 54,907 Accrued expenses and other 15,351 Notes payable and current portion of long-term debt 259 Taxes on income 1,198 Current liabilities 71,715 Long-term debt 554 Noncurrent operating lease liabilities 18,824 Other long-term liabilities 2,756 Noncurrent liabilities 22,134 Liabilities held for sale $ 93,849

New Accounting Pronouncements

New Accounting Pronouncements	9 Months Ended
	Sep. 27, 2020
Accounting Changes and Error Corrections [Abstract]
New Accounting Pronouncements	New Accounting PronouncementsIn June 2016, the FASB issued ASU 2016-13, "Measurement of Credit Losses on Financial Instruments," which requires measurement and recognition of expected versus incurred credit losses for financial assets held. The measurement of expected credit losses should be based on relevant information about past events, including historical experience, current conditions, and reasonable and supportable forecasts that affect the collectibility of the reported amount. The guidance is effective for annual reporting periods beginning after December 15, 2019, and interim periods within those annual periods. The Company adopted ASU 2016-13

Acquisitions and Dispositions

Acquisitions and Dispositions	9 Months Ended
	Sep. 27, 2020
Business Combinations [Abstract]
Acquisitions and Dispositions	Acquisitions and Dispositions Acquisitions On August 3, 2020, the Company completed the acquisition of Can Packaging, a privately owned designer and manufacturer of sustainable paper packaging and related manufacturing equipment, based in Habsheim, France, for total consideration of $45,473, net of cash acquired. Can Packaging operates two paper can manufacturing facilities in France, along with a research and development center where it designs and builds patented packaging machines and sealing equipment. The acquisition of Can Packaging expands the Company's ability to provide innovative recyclable packaging in various shapes and sizes. On January 10, 2020, the Company completed the acquisition of a small tube and core operation in Jacksonville, Florida, from Design Containers, Inc. ("Jacksonville"), for total cash consideration of $3,973. The preliminary fair values of the assets acquired in connection with the Can Packaging and Jacksonville acquisitions are as follows: Can Packaging Jacksonville Trade accounts receivable $ 5,256 $ — Inventories 3,225 150 Property, plant and equipment 10,636 2,773 Goodwill 12,359 1,050 Other intangible assets 25,746 — Payable to suppliers (2,811) — Other net tangible assets/(liabilities) (3,530) — Deferred income taxes, net (5,408) — Net Assets $ 45,473 $ 3,973 Goodwill for Can Packaging, none of which is expected to be deductible for income tax purposes, consists of increased access to certain markets. Can Packaging's financial results from the date acquired are included in the Company's Consumer Packaging segment. Goodwill for Jacksonville, all of which is expected to be deductible for income tax purposes, consists of increased access to certain markets. Jacksonville's financial results from the date acquired are included in the Company's Paper and Industrial Converted Products segment. The allocation of the purchase price of Can Packaging and Jacksonville to the tangible and intangible assets acquired and liabilities assumed was based on the Company's preliminary estimates of fair value, based on information currently available. Management is continuing to finalize its valuations of certain assets and liabilities including, but not limited to, those listed in the table above, and expects to complete its valuations within one year from their respective dates of acquisition. During the nine months ended September 27, 2020, the Company continued finalizing its valuations of the assets acquired and liabilities assumed in the December 31, 2019 acquisition of Thermoform Engineered Quality, LLC, and Plastique Holdings, LTD (together "TEQ") and the August 9, 2019 acquisition of Corenso Holdings America, Inc. ("Corenso") based on new information obtained about facts and circumstances that existed as of their respective acquisition dates. In addition, a final post-closing settlement for the change in working capital at TEQ to the date of closing was made in April 2020 resulting in the receipt of cash from the sellers totaling $185. The following measurement period adjustments were made to the previously disclosed preliminary fair values: TEQ Corenso Trade accounts receivable $ (56) $ — Inventories (433) (536) Property, plant and equipment (2,927) — Goodwill 3,251 616 Other intangible assets 800 — Payable to suppliers 6 (80) Other net tangible assets/liabilities (524) — Deferred income taxes, net (302) — Change in consideration paid $ (185) $ — As of September 27, 2020, the valuation of the assets acquired and liabilities assumed in the August 9, 2019 acquisition of Corenso is considered final. On April 12, 2018, the Company completed the acquisition of Highland Packaging Solutions ("Highland"). Total consideration for this acquisition included a contingent purchase liability of $7,500 payable in two annual installments if certain sales metrics were achieved. The metrics were met and the Company paid the first installment of $5,000 in 2019 and paid the second and final installment of $2,500 in May 2020. On August 30, 2016, the Company completed the acquisition of the temperature-controlled cargo container assets, license, trademarks, and manufacturing rights from AAR Corporation. Total consideration included a contingent purchase liability of $1,000 to be paid in two annual installments if certain metrics were met. The metrics were met and the Company paid the first installment of $500 in November 2019 and paid the second and final installment of $500 in August 2020. The payments of these contingent obligations are reflected as financing activities on the Company's Condensed Consolidated Statement of Cash Flows for the nine months ended September 27, 2020 and September 29, 2019. The Company has accounted for its acquisitions as business combinations under the acquisition method of accounting, in accordance with the business combinations subtopic of the Accounting Standards Codification and has included their results of operations in the Company's Condensed Consolidated Statements of Income from their respective dates of acquisition. Costs related to acquisitions and potential acquisitions and divestitures totaling $913 and $3,903 were incurred during the three months ended September 27, 2020 and September 29, 2019, respectively, and $2,941 and $5,516 were incurred during the nine months ended September 27, 2020 and September 29, 2019, respectively. These costs consist primarily of legal and professional fees and are included in "Selling, general and administrative expenses" in the Company's Condensed Consolidated Statements of Income. Dispositions

Shareholders' Equity

Shareholders' Equity	9 Months Ended
	Sep. 27, 2020
Equity [Abstract]
Shareholders' Equity	Shareholders' Equity Earnings per Share The following table sets forth the computation of basic and diluted earnings per share: Three Months Ended Nine Months Ended September 27, 2020 September 29, 2019 September 27, 2020 September 29, 2019 Numerator: Net income attributable to Sonoco $ 83,449 $ 92,064 $ 219,105 $ 246,886 Denominator: Weighted average common shares outstanding: Basic 100,974 100,778 100,935 100,727 Dilutive effect of stock-based compensation 271 408 220 431 Diluted 101,245 101,186 101,155 101,158 Net income attributable to Sonoco per common share: Basic $ 0.83 $ 0.91 $ 2.17 $ 2.45 Diluted $ 0.82 $ 0.91 $ 2.17 $ 2.44 Cash dividends $ 0.43 $ 0.43 $ 1.29 $ 1.27 No adjustments were made to "Net income attributable to Sonoco" in the computations of earnings per share. Anti-dilutive Securities Potentially dilutive securities are calculated in accordance with the treasury stock method, which assumes the proceeds from the exercise of all dilutive stock appreciation rights (SARs) are used to repurchase the Company’s common stock. Certain SARs are not dilutive because either the exercise price is greater than the average market price of the stock during the reporting period or assumed repurchases from proceeds from the exercise of the SARs were antidilutive. These SARs may become dilutive in the future if the market price of the Company's common stock appreciates. The average numbers of SARs that were not dilutive and, therefore, not included in the computation of diluted earnings per share during the three- and nine- month periods ended September 27, 2020 and September 29, 2019 were as follows: Three Months Ended Nine Months Ended September 27, 2020 September 29, 2019 September 27, 2020 September 29, 2019 Anti-dilutive stock appreciation rights 752 533 844 458 Stock Repurchases On February 10, 2016, the Company’s Board of Directors authorized the repurchase of up to 5,000 shares of the Company's common stock. A total of 2,030 shares were purchased in 2016. No shares were subsequently repurchased under this authorization, including during the nine months ended September 27, 2020. Accordingly, a total of 2,970 shares remain available for repurchase at September 27, 2020. The Company frequently repurchases shares of its common stock to satisfy employee tax withholding obligations in association with certain share-based compensation awards. These repurchases, which are not part of a publicly announced plan or program, totaled 130 shares in the nine months ended September 27, 2020 at a cost of $7,335, and 154 shares in the nine months ended September 29, 2019 at a cost of $8,697. Dividend Declarations On July 15, 2020, the Board of Directors declared a regular quarterly dividend of $0.43 per share. This dividend was paid on September 10, 2020 to all shareholders of record as of August 10, 2020. On October 19, 2020, the Board of Directors declared a regular quarterly dividend of $0.43 per share. This dividend is payable on December 10, 2020 to all shareholders of record as of November 10, 2020.

Restructuring and Asset Impairm

Restructuring and Asset Impairment	9 Months Ended
	Sep. 27, 2020
Restructuring and Related Activities [Abstract]
Restructuring and Asset Impairment	Restructuring and Asset Impairment Due to its geographic footprint and the cost-competitive nature of its businesses, the Company is continually seeking the most cost-effective means and structure to serve its customers and to respond to fundamental changes in its markets. As such, restructuring costs have been, and are expected to be, a recurring component of the Company's operating costs. The amount of these costs can vary significantly from quarter to quarter and from year to year depending upon the scope and location of the restructuring activities. The table below sets forth restructuring and restructuring-related asset impairment charges by type incurred: Three Months Ended Nine Months Ended September 27, 2020 September 29, 2019 September 27, 2020 September 29, 2019 Severance and Termination Benefits $ 4,607 $ 4,922 $ 29,866 $ 16,421 Asset Impairment / Disposal of Assets 16,605 (948) 25,364 6,336 Other Costs 2,937 2,641 4,403 7,885 Total Restructuring/Asset Impairment Charges $ 24,149 $ 6,615 $ 59,633 $ 30,642 The table below sets forth restructuring and restructuring-related asset impairment charges by reportable segment: Three Months Ended Nine Months Ended September 27, 2020 September 29, 2019 September 27, 2020 September 29, 2019 Consumer Packaging $ 16,662 $ 6,363 $ 22,274 $ 24,105 Display and Packaging 1,391 106 4,939 992 Paper and Industrial Converted Products 6,990 1,066 30,035 3,540 Protective Solutions (793) (930) 375 73 Corporate (101) 10 2,010 1,932 Total Restructuring/Asset Impairment Charges $ 24,149 $ 6,615 $ 59,633 $ 30,642 Restructuring and asset impairment charges are included in “Restructuring/Asset impairment charges” in the Company's Condensed Consolidated Statements of Income. The following table sets forth the activity in the restructuring accrual included in “Accrued expenses and other” on the Company’s Condensed Consolidated Balance Sheets: Severance Asset Other Total Accrual Activity Liability at December 31, 2019 $ 10,765 $ — $ 592 $ 11,357 2020 charges 29,866 25,364 4,403 59,633 Cash receipts/(payments) (25,749) 3,527 (4,817) (27,039) Asset write downs/disposals — (28,891) 1,143 (27,748) Foreign currency translation 127 1 128 Liability at September 27, 2020 $ 15,009 $ — $ 1,322 $ 16,331 "Severance and Termination Benefits" during the first nine months of 2020 includes the cost of severance provided to employees terminated as a result of the closures of a paper mill in Canada, a paper machine in the United States, a cone operation in Europe and three tube and core plants in the United States (all part of the Paper and Industrial Converted Products segment); closure of a paperboard specialties plant in the United States (part of the Display and Packaging segment); and closure of two graphic design operations, one in the United States and one in the United Kingdom (both part of the Consumer Packaging segment). In addition, the charges include the cost of severance for approximately 250 employees whose positions were eliminated in conjunction with the Company's ongoing organizational effectiveness efforts. "Asset Impairment/Disposal of Asset s" consists primarily of impairment charges of $14,892 resulting from the announced consolidation in the Company's perimeter-of-the-store business of operations on the West Coast of the United States and in Mexico. This consolidation will result in the closure of a manufacturing facility in the United States and the conversion of a manufacturing facility in Mexico into a warehouse and distribution center. Both of these operations are part of the Consumer Packaging segment. Further asset impairment charges totaling $7,927 resulted from the closure of a paper mill in Canada and $2,481 from the closure of a paper machine the United States. Additionally, the Company received net cash proceeds of $3,527 primarily from the sales of two buildings associated with previously closed facilities. These buildings had a remaining net book value of $2,451 at the time of the sale. “Other Costs” consist primarily of costs related to plant closures including equipment removal, utilities, plant security, property taxes and insurance, net of incentive forfeitures.

Accumulated Other Comprehensive

Accumulated Other Comprehensive Loss	9 Months Ended
	Sep. 27, 2020
Equity [Abstract]
Accumulated Other Comprehensive Loss	Accumulated Other Comprehensive Loss The following table summarizes the components of accumulated other comprehensive loss and the changes in the balances of each component of accumulated other comprehensive loss, net of tax as applicable, for the nine months ended September 27, 2020 and September 29, 2019: Foreign Defined Cash Accumulated Balance at December 31, 2019 $ (241,994) $ (574,413) $ (396) $ (816,803) Other comprehensive loss before reclassifications (35,447) (885) (3,362) (39,694) Amounts reclassified from accumulated other comprehensive loss to net income — 16,361 2,922 19,283 Other comprehensive (loss)/income (35,447) 15,476 (440) (20,411) Balance at September 27, 2020 $ (277,441) $ (558,937) $ (836) $ (837,214) Balance at December 31, 2018 $ (251,102) $ (487,380) $ (2,431) $ (740,913) Other comprehensive (loss)/income before reclassifications (26,863) (27,781) 1,434 (53,210) Amounts reclassified from accumulated other comprehensive loss to net income — 19,894 (34) 19,860 Amounts reclassified from accumulated other comprehensive loss to fixed assets — — (110) (110) Other comprehensive (loss)/income (26,863) (7,887) 1,290 (33,460) Balance at September 29, 2019 $ (277,965) $ (495,267) $ (1,141) $ (774,373) The following table summarizes the effects on net income of significant amounts reclassified from each component of accumulated other comprehensive loss for the three- and nine-month periods ended September 27, 2020 and September 29, 2019: Amount Reclassified from Accumulated Three Months Ended Nine Months Ended Details about Accumulated Other September 27, September 29, September 27, September 29, Affected Line Item in Gains/(losses) on cash flow hedges Foreign exchange contracts $ (1,723) $ 139 $ (6,245) $ 988 Net sales Foreign exchange contracts 867 (348) 3,744 (1,014) Cost of sales Commodity contracts (792) 11 (1,346) 127 Cost of sales $ (1,648) $ (198) $ (3,847) $ 101 Income before income taxes 403 (11) 925 (67) Provision for income taxes $ (1,245) $ (209) $ (2,922) $ 34 Net income Defined benefit pension items Effect of curtailment loss (a) $ — $ — (31) $ — Non-operating pension costs Effect of settlement loss (a) — (796) (661) (2,343) Non-operating pension costs Amortization of defined benefit pension items (a) (7,103) (5,905) (21,185) (24,360) Non-operating pension costs $ (7,103) $ (6,701) $ (21,877) $ (26,703) Income before income taxes 1,800 1,709 5,516 6,809 Provision for income taxes $ (5,303) $ (4,992) $ (16,361) $ (19,894) Net income Total reclassifications for the period $ (6,548) $ (5,201) $ (19,283) $ (19,860) Net income (a) See Note 11 for additional details. The following table summarizes the before and after tax amounts for the various components of other comprehensive income/(loss) for the three-month periods ended September 27, 2020 and September 29, 2019: Three months ended September 27, 2020 Three months ended September 29, 2019 Before Tax Tax After Tax Before Tax Tax After Tax Foreign currency items: Net other comprehensive loss from foreign currency items $ 24,674 $ — $ 24,674 $ (33,584) $ — $ (33,584) Defined benefit pension items: Other comprehensive income/(loss) before (31) 8 (23) (29,190) 7,348 (21,842) Amounts reclassified from accumulated other 7,103 (1,800) 5,303 6,701 (1,709) 4,992 Net other comprehensive income/(loss) from 7,072 (1,792) 5,280 (22,489) 5,639 (16,850) Gains and losses on cash flow hedges: Other comprehensive income/(loss) before 1,376 (336) 1,040 (279) (14) (293) Amounts reclassified from accumulated other 1,648 (403) 1,245 198 11 209 Amounts reclassified from accumulated other — — — (9) — (9) Net other comprehensive income/(loss) from 3,024 (739) 2,285 (90) (3) (93) Other comprehensive income/(loss): $ 34,770 $ (2,531) $ 32,239 $ (56,163) $ 5,636 $ (50,527) The following table summarizes the before and after tax amounts for the various components of other comprehensive income/(loss) for the nine-month periods ended September 27, 2020 and September 29, 2019: Nine months ended September 27, 2020 Nine months ended September 29, 2019 Before Tax Tax After Tax Before Tax Tax After Tax Foreign currency items: Net other comprehensive (loss)/income from foreign currency items (a) $ (27,866) $ (7,581) $ (35,447) $ (26,863) $ — $ (26,863) Defined benefit pension items: Other comprehensive (loss)/income before (1,177) 292 (885) (36,828) 9,047 (27,781) Amounts reclassified from accumulated other 21,877 (5,516) 16,361 26,703 (6,809) 19,894 Net other comprehensive income/(loss) from 20,700 (5,224) 15,476 (10,125) 2,238 (7,887) Gains and losses on cash flow hedges: Other comprehensive (loss)/income before (4,345) 983 (3,362) 1,915 (481) 1,434 Amounts reclassified from accumulated other 3,847 (925) 2,922 (101) 67 (34) Amounts reclassified from accumulated other — — — (110) — (110) Net other comprehensive (loss)/income from (498) 58 (440) 1,704 (414) 1,290 Other comprehensive income/(loss): $ (7,664) $ (12,747) $ (20,411) $ (35,284) $ 1,824 $ (33,460) (a) Other comprehensive loss from foreign currency items for the nine months ended September 27, 2020, includes the settlement gain and corresponding tax provision related to the termination of a net investment hedge. See Note 9 for more information.

Goodwill and Other Intangible A

Goodwill and Other Intangible Assets	9 Months Ended
	Sep. 27, 2020
Goodwill and Intangible Assets Disclosure [Abstract]
Goodwill and Other Intangible Assets	Goodwill and Other Intangible Assets Goodwill A summary of the changes in goodwill by segment for the nine months ended September 27, 2020 is as follows: Consumer Display Paper and Protective Total Goodwill at December 31, 2019 $ 691,243 $ 203,414 $ 303,041 $ 231,648 $ 1,429,346 2020 Acquisitions 12,359 — 1,050 — 13,409 Reclassified to assets held for sale — (76,828) — — (76,828) Foreign currency translation (685) — 442 (268) (511) Measurement period adjustments 3,251 — 616 — 3,867 Goodwill at September 27, 2020 $ 706,168 $ 126,586 $ 305,149 $ 231,380 $ 1,369,283 The Company recorded goodwill totaling $12,359 related to the August 2020 acquisition of Can Packaging and $1,050 related to the January 2020 acquisition of a small tube and core operation in Jacksonville, Florida. Measurement period adjustments were made in the first nine months of 2020 to the fair values of the assets acquired and the liabilities assumed in the 2019 acquisitions of Corenso and TEQ resulting in increases in goodwill of $616 and $3,251, respectively. See Note 3 for additional information. As of September 27, 2020, the Company has reclassified $76,828 of goodwill related to its European contract packaging operations to assets held for sale. Prior to September 27, 2020, these operations were included in the Display and Packaging reporting unit. The allocation of goodwill to the European operations was based on the relative fair value of this business to the fair value of the reporting unit as a whole. See Note 1 for additional information. The Company assesses goodwill for impairment annually during the third quarter, or from time to time when warranted by the facts and circumstances surrounding individual reporting units or the Company as a whole. The Company completed its most recent annual goodwill impairment testing during the third quarter of 2020. As part of this testing, the Company analyzed certain qualitative and quantitative factors in determining whether a goodwill impairment existed. The Company's assessments reflected a number of significant management assumptions and estimates including the Company's forecast of sales, profit margins, and discount rates. Changes in these assumptions could materially impact the Company's conclusions. Based on its assessments, as part of its annual impairment test during the third quarter of 2020, the Company concluded that there was no impairment of goodwill for any of its reporting units. Although no reporting units failed the assessments noted above, in management's opinion, the goodwill of the Display and Packaging reporting unit, excluding the European operations held for sale, is at risk of impairment in the near term if there is a negative change in the long-term outlook for the business or in other factors, such as the discount rate. A large portion of projected sales in this reporting unit is concentrated in several major customers, the loss of any of which could impact the Company's conclusion regarding the likelihood of goodwill impairment for the unit. Total goodwill associated with this reporting unit was $126,586 at September 27, 2020. In the latest annual impairment test, the estimated fair value of the Display and Packaging reporting unit was determined to exceed its carrying value by approximately 5.2%. In this analysis, projected future cash flows for Display and Packaging were discounted at 9.1%. Based on the discounted cash flow model and holding other valuation assumptions constant, Display and Packaging projected operating profits across all future periods would have to be reduced approximately 2.1%, or the discount rate increased to 10.6%, in order for the estimated fair value to fall below the reporting unit’s carrying value. In addition, the results of the Conitex reporting unit have been negatively impacted by the economic impact of the COVID-19 pandemic due to end-market weakness, particularly in textiles, as well as certain customers' plants being temporarily shut down to contain the spread of the virus. Management currently expects customer demand will begin to increase over the next few quarters and approach pre-pandemic levels late next year or the year after. However, should it become apparent that the post-COVID-19 recovery is likely to be weaker, or significantly delayed, compared to management’s current expectations, a goodwill impairment charge may be possible in the future. Total goodwill associated with this reporting unit was $32,109 at September 27, 2020. In the latest annual impairment test, the estimated fair value of the Conitex reporting unit was determined to exceed its carrying value by approximately 6.9%. In this analysis, projected future cash flows for Conitex were discounted at 10.8%. Based on the discounted cash flow model and holding other valuation assumptions constant, Conitex projected operating profits across all future periods would have to be reduced approximately 6.2%, or the discount rate increased to 12.2%, in order for the estimated fair value to fall below the reporting unit’s carrying value. Other Intangible Assets A summary of other intangible assets as of September 27, 2020 and December 31, 2019 is as follows: September 27, December 31, Other Intangible Assets, gross: Patents $ 32,764 $ 26,096 Customer lists 651,828 632,036 Trade names 32,409 32,427 Proprietary technology 24,492 24,525 Other 2,808 2,297 Other Intangible Assets, gross $ 744,301 $ 717,381 Accumulated Amortization: Patents $ (13,831) $ (11,669) Customer lists (323,052) (287,831) Trade names (11,677) (9,985) Proprietary technology (19,524) (17,910) Other (1,843) (1,694) Total Accumulated Amortization $ (369,927) $ (329,089) Other Intangible Assets, net $ 374,374 $ 388,292 The Company recorded $25,750 in intangible assets, primarily customer lists and patents, related to the August 2020 acquisition of Can Packaging. These intangibles will be amortized over an average useful life of fourteen years. Measurement period adjustments were made in the first nine months of 2020 to the fair values of the assets acquired and the liabilities assumed in the 2019 acquisitions of TEQ and Corenso resulting in an increase in amortizable intangibles, primarily customer lists, of $800. See Note 3 for additional information. Other Intangible Assets are amortized on a straight-line basis over their respective useful lives, which generally range from three Aggregate amortization expense was $12,993 and $12,145 for the three months ended September 27, 2020 and September 29, 2019, respectively, and $39,624 and $38,035 for the nine months ended September 27, 2020 and September 29, 2019, respectively. Amortization expense on other intangible assets is expected to total approximately $52,500 in 2020, $51,900 in 2021, $49,200 in 2022, $44,500 in 2023 and $35,900 in 2024.

Debt

Debt	9 Months Ended
	Sep. 27, 2020
Debt Disclosure [Abstract]
Debt	Debt Details of the Company's debt at September 27, 2020 and December 31, 2019 are as follows: September 27, December 31, Commercial paper $ — $ 250,000 U.S. Bank term loan due March 2021 100,000 — Wells Fargo term loan due May 2021 200,000 200,000 Syndicated bank term loan due July 2022 140,022 146,569 1.0% Euro loan due May 2021 174,416 167,272 9.2% debentures due August 2021 4,320 4,318 4.375% debentures due November 2021 249,660 249,428 3.125% debentures due May 2030 594,539 — 5.75% debentures due November 2040 599,270 599,244 Other foreign denominated debt 15,277 16,734 Finance lease obligations 44,046 33,077 Other notes 14,447 14,727 Total debt $ 2,135,997 $ 1,681,369 Less current portion and short-term notes 508,960 488,234 Long-term debt $ 1,627,037 $ 1,193,135 The Company has taken several actions in 2020 to secure liquidity in light of volatility in the credit markets and economic uncertainty caused by the COVID-19 pandemic. On March 18, 2020, the Company closed and funded a 364 -day, $150,000 term loan with Wells Fargo Bank, National Association, using the proceeds to repay a portion of outstanding commercial paper. Interest was assessed at the London Interbank Offered Rate (LIBOR) plus a margin based on a pricing grid that used the Company’s credit ratings. There was no required amortization and repayment could be accelerated at any time at the discretion of the Company. The Company repaid this loan on July 20, 2020. On April 1, 2020, the Company accessed $250,000 from its $500,000 revolving credit facility with a syndicate of eight banks committed through July 2022. The Company used $85,000 of the proceeds to fully repay its then outstanding commercial paper balance and the remaining proceeds were invested in short-term cash equivalents with maturities of 30 days or less. The Company repaid the $250,000 borrowed under its revolving credit facility on May 5, 2020. On April 6, 2020, the Company borrowed $100,000, pursuant to a new 364 -day term loan with U.S. Bank, National Association. Interest is assessed at LIBOR plus a margin based on a pricing grid that uses the Company's credit ratings. The margin above LIBOR at September 27, 2020 was 125 basis points. There is no required amortization and repayment can be accelerated at any time at the discretion of the Company. On April 22, 2020, the Company sold through a public offering $600,000 of 3.125% notes due May 1, 2030. The offering was made pursuant to an effective shelf registration statement. This action was taken largely to mitigate the risk of possible future credit market dislocations triggered by the economic impact of the COVID-19 pandemic. The Company is using the net proceeds from the offering of approximately $594,200 for general corporate purposes, including the repayment of existing debt. In May 2020, the Company exercised a conditional, one-time option to extend its $200,000 term loan with Wells Fargo Bank, National Association, for an additional 364 days to May 2021. Interest is assessed at LIBOR plus a margin based on a pricing grid that uses the Company's credit ratings. The margin above LIBOR at September 27, 2020 was 112.5 basis points. There is no required amortization and the repayment can be accelerated at any time at the discretion of the Company. As of September 27, 2020, the Company has scheduled debt maturities through December 31, 2021 of approximately $760,000. At September 27, 2020, the Company has $782,679 in cash and cash equivalents on hand and $500,000 in committed availability under its revolving credit facility. The Company believes that these amounts, combined with expected net cash flows from operating activities, provide ample liquidity to cover the 2021 debt maturities and other cash flow needs of the Company over the course of the next year. On October 22, 2020, subsequent to quarter end, the Company fully repaid the $200,000 term loan with Wells Fargo Bank, National Association, and the $100,000 term loan with U.S. Bank, National Association using existing cash on hand. Certain of the Company’s debt agreements impose restrictions with respect to the maintenance of financial ratios and the disposition of assets. The most restrictive covenants currently require the Company to maintain a minimum level of interest coverage and a minimum level of net worth, as defined in the agreements. As of September 27, 2020, the Company’s interest coverage and net worth were substantially above the minimum levels required under these covenants.

Financial Instruments and Deriv

Financial Instruments and Derivatives	9 Months Ended
	Sep. 27, 2020
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Financial Instruments and Derivatives	Financial Instruments and Derivatives The following table sets forth the carrying amounts and fair values of the Company’s significant financial instruments for which the carrying amount differs from the fair value. September 27, 2020 December 31, 2019 Carrying Fair Carrying Fair Long-term debt, net of current portion $ 1,627,037 $ 1,880,544 $ 1,193,135 $ 1,351,397 The carrying value of cash and cash equivalents, short-term debt and long-term variable-rate debt approximates fair value. The fair value of long-term debt is determined based on recent trade information in the financial markets of the Company’s public debt or is determined by discounting future cash flows using interest rates available to the Company for issues with similar terms and maturities. It is considered a Level 2 fair value measurement. Cash Flow Hedges At September 27, 2020 and December 31, 2019, the Company had derivative financial instruments outstanding to hedge anticipated transactions and certain asset and liability related cash flows. These contracts, which have maturities ranging to December 2021, qualify as cash flow hedges under U.S. GAAP. For derivative instruments that are designated and qualify as a cash flow hedge, the gain or loss on the derivative instrument is reported as a component of other comprehensive income and reclassified into earnings in the same period or periods during which the hedged transaction affects earnings and is presented in the same income statement line item as the earnings effect of the hedged item. Commodity Cash Flow Hedges The Company has entered into certain derivative contracts to manage the cost of anticipated purchases of natural gas and aluminum. At September 27, 2020, natural gas swaps covering approximately 1.3 million MMBTUs were outstanding. These contracts represent approximately 79% of anticipated usage in the United States for the remainder of 2020. Additionally, the Company had swap contracts covering 3,597 metric tons of aluminum, representing approximately 31% and 45% of anticipated usage for the remainder of 2020 and 2021, respectively. The fair values of the Company’s commodity cash flow hedges netted to a gain position of $355 at September 27, 2020 and a loss position of $(1,625) at December 31, 2019. The amount of the gain included in Accumulated Other Comprehensive Income at September 27, 2020, that is expected to be reclassified to the income statement during the next twelve months is $183. Foreign Currency Cash Flow Hedges The Company has entered into forward contracts to hedge certain anticipated foreign currency denominated sales, purchases, and capital spending expected to occur in 2020 and 2021. The net positions of these contracts at September 27, 2020 were as follows (in thousands): Currency Action Quantity Colombian peso purchase 3,927,650 Mexican peso purchase 218,910 Polish zloty purchase 24,240 Czech koruna purchase 10,162 Canadian dollar purchase 8,592 British pound purchase 1,891 Turkish lira purchase 907 Euro purchase 199 New Zealand dollar sell (621) Australian dollar sell (1,312) Russian ruble sell (51,701) The fair value of foreign currency cash flow hedges related to forecasted sales and purchases netted to a loss position of $(1,372) at September 27, 2020 and a gain position of $1,058 at December 31, 2019. Losses of $(942) are expected to be reclassified from accumulated other comprehensive income to the income statement during the next twelve months. I n addition, the Company occasionally enters into forward contracts to hedge certain foreign currency cash flow transactions related to construction in progress. Gains or losses from these hedges are reclassified from accumulated other comprehensive income and included in the carrying value of the related fixed assets acquired. The net positions of these contracts were immaterial a s of September 27, 2020 and December 31, 2019. Net Investment Hedge In January 2020, the Company entered into a cross-currency swap agreement with a notional amount of $250,000 to effectively convert a portion of the Company's fixed-rate, U.S. dollar denominated debt, including the semi-annual interest payments, to fixed-rate euro-denominated debt. The swap agreement had an original maturity of November 1, 2024 and provided for the Company to receive semi-annual interest payments in U.S. dollars at a rate of 5.75% and pay interest in euros at a rate of 3.856%. The risk management objective was to manage foreign currency risk relating to net investments in certain European subsidiaries denominated in foreign currencies. As a result of significant strengthening of the U.S. dollar, as well as a reduction in the differential between U.S. and European interest rates, the fair market value of the swap position appreciated significantly during the first quarter of 2020. In March 2020, the Company terminated the swap agreement and received a net cash settlement of $14,480. The Company recorded this foreign currency translation gain in "Accumulated other comprehensive loss," net of a tax provision of $7,581. Other Derivatives The Company routinely enters into forward contracts or swaps to economically hedge the currency exposure of intercompany debt and foreign currency denominated receivables and payables. The Company does not apply hedge accounting treatment under ASC 815 for these instruments. As such, changes in fair value are recorded directly to income and expense in the periods that they occur. The net currency positions of these contracts at September 27, 2020, were as follows (in thousands): Currency Action Quantity Indonesian rupiah purchase 17,858,489 Colombian peso purchase 8,787,528 Mexican peso purchase 483,909 Canadian dollar purchase 6,346 The Company has entered into certain other derivative contracts to manage the cost of purchases of diesel fuel. At September 27, 2020, diesel swaps covering approximately 2.3 million gallons were outstanding. The fair value of the Company’s other derivatives position was a loss of $(102) an d a gain of $54 at September 27, 2020 and December 31, 2019, respectively. The following table sets forth the location and fair values of the Company’s derivative instruments at September 27, 2020 and December 31, 2019: Description Balance Sheet Location September 27, 2020 December 31, 2019 Derivatives designated as hedging instruments: Commodity Contracts Prepaid expenses $ 256 $ — Commodity Contracts Other assets $ 173 $ — Commodity Contracts Accrued expenses and other $ (74) $ (1,625) Foreign Exchange Contracts Prepaid expenses $ 223 $ 1,236 Foreign Exchange Contracts Accrued expenses and other $ (1,166) $ (178) Foreign Exchange Contracts Other liabilities $ (430) $ — Derivatives not designated as hedging instruments: Commodity Contracts Prepaid expenses $ 10 $ — Foreign Exchange Contracts Prepaid expenses $ — $ 88 Foreign Exchange Contracts Accrued expenses and other $ (112) $ (34) While certain of the Company’s derivative contract arrangements with its counterparties provide for the ability to settle contracts on a net basis, the Company reports its derivative positions on a gross basis. There are no collateral arrangements or requirements in these agreements. The following tables set forth the effect of the Company’s derivative instruments on financial performance for the three months ended September 27, 2020 and September 29, 2019: Description Amount of Gain or Location of Gain Amount of Gain or Derivatives in Cash Flow Hedging Relationships: Three months ended September 27, 2020 Foreign Exchange Contracts $ 90 Net sales $ (1,723) Cost of sales $ 867 Commodity Contracts $ 1,286 Cost of sales $ (792) Three months ended September 29, 2019 Foreign Exchange Contracts $ (957) Net sales $ 139 Cost of sales $ (348) Commodity Contracts $ 678 Cost of sales $ 11 Description Gain or (Loss) Location of Gain or (Loss) Recognized in Derivatives not Designated as Hedging Instruments: Three months ended September 27, 2020 Commodity Contracts $ (436) Cost of sales Foreign Exchange Contracts $ 486 Selling, general and administrative Three months ended September 29, 2019 Commodity Contracts $ — Cost of sales Foreign Exchange Contracts $ 161 Selling, general and administrative Three months ended September 27, 2020 Three months ended September 29, 2019 Description Revenue Cost of Revenue Cost of Total amount of income and expense line items presented in the Condensed Consolidated Statements of Income $ (1,723) $ 75 $ 139 $ (337) The effects of cash flow hedging: Gain or (loss) on cash flow hedging relationships: Foreign exchange contracts: Amount of gain or (loss) reclassified from accumulated other comprehensive income into net income $ (1,723) $ 867 $ 139 $ (348) Commodity contracts: Amount of gain or (loss) reclassified from accumulated other comprehensive income into net income $ — $ (792) $ — $ 11 The following tables set forth the effect of the Company’s derivative instruments on financial performance for the nine months ended September 27, 2020 and September 29, 2019: Description Amount of Gain or Location of Gain Amount of Gain or Derivatives in Cash Flow Hedging Relationships: Nine months ended September 27, 2020 Foreign Exchange Contracts $ (4,985) Net sales $ (6,245) Cost of sales $ 3,744 Commodity Contracts $ 640 Cost of sales $ (1,346) Nine months ended September 29, 2019 Foreign Exchange Contracts $ 1,901 Net sales $ 988 Cost of sales $ (1,014) Commodity Contracts $ 14 Cost of sales $ 127 Description Gain or (Loss) Location of Gain or (Loss) Recognized in Derivatives not Designated as Hedging Instruments: Nine months ended September 27, 2020 Commodity Contracts $ (252) Cost of sales Foreign Exchange Contracts $ (3,565) Selling, general and administrative Nine months ended September 29, 2019 Commodity Contracts $ — Cost of sales Foreign Exchange Contracts $ (411) Selling, general and administrative Nine months ended September 27, 2020 Nine months ended September 29, 2019 Description Revenue Cost of Revenue Cost of Total amount of income and expense line items presented in the Condensed Consolidated Statements of Income $ (6,245) $ 2,398 $ 988 $ (887) Gain or (loss) on cash flow hedging relationships: Foreign exchange contracts: Amount of gain or (loss) reclassified from accumulated other comprehensive income into net income $ (6,245) $ 3,744 $ 988 $ (1014) Commodity contracts: Amount of gain or (loss) reclassified from accumulated other comprehensive income into net income $ — $ (1,346) $ — $ 127

Fair Value Measurements

Fair Value Measurements	9 Months Ended
	Sep. 27, 2020
Fair Value Disclosures [Abstract]
Fair Value Measurements	Fair Value Measurements Fair value is defined as an exit price, representing the amount that would be received to sell an asset or paid to transfer a liability in an orderly transaction between market participants. Fair value is a market-based measurement that is determined based on assumptions that market participants would use in pricing an asset or liability. A three-tier fair value hierarchy is used to prioritize the inputs in measuring fair value as follows: Level 1 – Observable inputs such as quoted market prices in active markets; Level 2 – Inputs, other than quoted prices in active markets, that are observable either directly or indirectly; and Level 3 – Unobservable inputs for which there is little or no market data, which require the reporting entity to develop its own assumptions. The following table sets forth information regarding the Company’s financial assets and financial liabilities, excluding retirement and postretirement plan assets, measured at fair value on a recurring basis: Description September 27, 2020 Assets measured Level 1 Level 2 Level 3 Hedge derivatives, net: Commodity contracts $ 355 $ — $ — $ 355 $ — Foreign exchange contracts $ (1,373) $ — $ — $ (1,373) $ — Non-hedge derivatives, net: Commodity contracts 10 — — 10 — Foreign exchange contracts $ (112) $ — $ — $ (112) $ — Description December 31, 2019 Assets measured Level 1 Level 2 Level 3 Hedge derivatives, net: Commodity contracts $ (1,625) $ — $ — $ (1,625) $ — Foreign exchange contracts $ 1,058 $ — $ — $ 1,058 $ — Non-hedge derivatives, net: Foreign exchange contracts $ 54 $ — $ — $ 54 $ — As discussed in Note 9, the Company uses derivatives to mitigate the effect of raw material and energy cost fluctuations, foreign currency fluctuations and, from time to time, interest rate movements. Fair value measurements for the Company’s derivatives are classified under Level 2 because such measurements are estimated based on observable inputs such as interest rates, yield curves, spot and future commodity prices and spot and future exchange rates. Certain deferred compensation plan liabilities are funded by assets invested in various exchange traded mutual funds. These assets are measured using quoted prices in accessible active markets for identical assets. The Company does not currently have any non-financial assets or liabilities that are recognized or disclosed at fair value on a recurring basis. None of the Company’s financial assets or liabilities are measured at fair value using significant unobservable inputs. There were no transfers in or out of Level 1 or Level 2 fair value measurements during the three- and nine-month periods ended September 27, 2020.

Employee Benefit Plans

Employee Benefit Plans	9 Months Ended
	Sep. 27, 2020
Retirement Benefits [Abstract]
Employee Benefit Plans	Employee Benefit Plans Retirement Plans and Retiree Health and Life Insurance Plans The Company provides non-contributory defined benefit pension plans to certain of its employees in the United States, Mexico and Belgium. The Company also sponsors contributory defined benefit pension plans covering the majority of its employees in the United Kingdom, Canada, and the Netherlands. In addition, the Company provides postretirement healthcare and life insurance benefits to a limited number of its retirees and their dependents in the United States and Canada, based on certain age and/or service eligibility requirements. The Company froze participation in its U.S. qualified defined benefit pension plan for newly hired salaried and non-union hourly employees effective December 31, 2003. To replace this benefit, non-union U.S. employees hired on or after January 1, 2004, are provided an annual contribution, called the Sonoco Retirement Contribution (SRC), to their participant accounts in the Sonoco Retirement and Savings Plan. The SRC is equal to 4% of the participant's eligible pay plus 4% of eligible pay in excess of the social security wage base. On February 4, 2009, the U.S. qualified defined benefit pension plan was further amended to freeze plan benefits for all active, non-union participants effective December 31, 2018. Remaining active participants in the U.S. qualified plan became eligible for SRC contributions effective January 1, 2019. The components of net periodic benefit cost include the following: Three Months Ended Nine Months Ended September 27, 2020 September 29, 2019 September 27, 2020 September 29, 2019 Retirement Plans Service cost $ 881 $ 1,006 $ 2,966 $ 2,909 Interest cost 12,785 13,686 38,015 43,729 Expected return on plan assets (12,427) (13,114) (37,234) (51,443) Amortization of prior service cost 245 241 742 671 Amortization of net actuarial loss 7,136 5,993 21,270 24,673 Effect of curtailment loss — — 31 — Effect of settlement loss — 796 661 2,343 Net periodic benefit cost $ 8,620 $ 8,608 $ 26,451 $ 22,882 Retiree Health and Life Insurance Plans Service cost $ 89 $ 77 $ 265 $ 229 Interest cost 84 116 249 347 Expected return on plan assets (92) (179) (275) (535) Amortization of prior service credit (70) (124) (207) (371) Amortization of net actuarial gain (208) (205) (620) (613) Net periodic benefit income $ (197) $ (315) $ (588) $ (943) The Company made aggregate contributions of $12,292 and $210,962 to its defined benefit retirement and retiree health and life insurance plans during the nine months ended September 27, 2020 and September 29, 2019, respectively. The prior year included voluntary contributions to the Company's U.S. defined benefit pension plans (the "Plans") totaling $200,000. These voluntary contributions were followed by actions to further de-risk the Plan portfolios by increasing the allocation of pension assets to fixed-income investments. The Company expects to make additional aggregate contributions of approximately $4,700 to its defined benefit retirement and retiree health and life insurance plans over the remainder of 2020, excluding potential immaterial cash funding related to restructuring actions. Plan Termination As previously disclosed, the Company terminated the Sonoco Pension Plan for Inactive Participants (the "Inactive Plan"), a tax-qualified defined benefit plan, effective September 30, 2019. Upon approval from the Pension Benefit Guaranty Corporation ("PBGC") and following completion of a limited lump sum offering, the Company is expected to settle all remaining liabilities under the Inactive Plan through the purchase of annuities. The Company intends to apply to the PBGC for an extension of the distribution deadline and expects to make additional contributions to the Inactive Plan of approximately $150,000 in 2021 in order to be fully funded on a termination basis at the time of the annuity purchase. The actual amount of the Company's long-term liability when it is transferred, and the related cash contribution requirement, will depend upon the nature and timing of participant settlements, as well as prevailing market conditions. These expected contributions are reducing tax payments in 2020 by approximately $38,000. Non-cash, pretax settlement charges totaling approximately $590,000 are expected to be recognized in 2021 as the lump sum payouts and annuity purchases are made. Settlements and Curtailments The Company recognized settlement cha rges totaling $661 and $2,343 during the nine months ended September 27, 2020 and September 29, 2019, respectively. These charges resulted from payments made to certain participants of the Company's non-union Canadian pension plan who elected a lump sum distribution option upon retirement. Additional settlement charges may be recognized over the remainder of 2020 as a result of ongoing lump-sum distributions and restructuring actions. In addition, curtailment charges totaling $31 related to the closure of a paper mill in Canada were recognized during the nine months ended September 27, 2020. Sonoco Retirement Contribution (SRC) SRC contributions, which are funded annually in the first quarter, totaled $22,503 during the nine months ended September 27, 2020, and $14,573 during the nine months ended September 29, 2019. No additional SRC contributions are expected during the remainder of 2020. The Company recognized expense related to the SRC of $5,589 and $5,912 for the quarters ended September 27, 2020 and September 29, 2019, respectively, and $17,283 and $18,009 for the nine-month periods ended September 27, 2020 and September 29, 2019, respectively.

Income Taxes

Income Taxes	9 Months Ended
	Sep. 27, 2020
Income Tax Disclosure [Abstract]
Income Taxes	Income Taxes The Company’s effective tax rates for the three- and nine-month periods ended September 27, 2020 were (0.8)% and 18.6%, respectively, and its effective tax rates for the three- and nine-month periods ended September 29, 2019 were 22.4% and 24.1%, respectively. The rates for the three- and nine-month periods ended September 27, 2020 and September 29, 2019 varied from the U.S. statutory rate due primarily to the unfavorable effect of certain international operations that were subject to tax rates generally higher than the U.S. tax rate, the effect of state income taxes, and the effect of the Global Intangible Low Taxed Income (GILTI) tax. The rates for the three- and nine-month periods ended September 27, 2020 also varied from the U.S. statutory rate due to recording the $20,355 write-down of a deferred tax liability related to classifying the European contract packaging business as held for sale at September 27, 2020. The Company and/or its subsidiaries file federal, state and local income tax returns in the United States and various foreign jurisdictions. The Company's U.S. federal income tax return is currently under audit for the 2012 and 2013 tax years, and the Company expects to finalize settlement of this audit by the end of 2020. Other than the aforementioned audit, with few exceptions, the Company is no longer subject to income tax examinations by tax authorities for years prior to 2016. The Company is currently reviewing its utilization of foreign tax credits in previously filed income tax returns and, accordingly, may elect to amend its existing tax filings. A conclusion on this matter is expected to be reached in the next three to six months, and it is reasonably possible that a benefit material to the Company's financial statements will be recognized at that time. The Company’s reserve for uncertain tax benefits has increased by approximately $900 since December 31, 2019 due primarily to an increase in reserves related to existing uncertain tax positions. The Company believes that it is reasonably possible that the amount reserved for unrecognized tax benefits at September 27, 2020 could decrease by approximately $6,000 over the next twelve months. This change includes the anticipated increase in reserves related to existing positions offset by settlements of issues currently under examination and the release of existing reserves due to the expiration of the statute of limitations. Although the Company’s estimate for the potential outcome for any uncertain tax issue is highly judgmental, management believes that any reasonably foreseeable outcomes related to these matters have been adequately provided for. However, future results may include favorable or unfavorable adjustments to estimated tax liabilities in the period the assessments are made or resolved or when statutes of limitation on potential assessments expire. Additionally, the jurisdictions in which earnings or deductions are realized may differ from current estimates. As a result, the Company’s effective tax rate may fluctuate significantly on a quarterly basis. The Company has

Leases

Leases	9 Months Ended
	Sep. 27, 2020
Leases [Abstract]
Leases	Leases The Company routinely enters into leasing arrangements for real estate (including manufacturing facilities, office space, warehouses, and packaging centers), transportation equipment (automobiles, forklifts, and trailers), and office equipment (copiers and postage machines). The assessment of the certainty associated with the exercise of various lease renewal, termination, and purchase options included in the Company's lease contracts is at the Company's sole discretion. Most real estate leases, in particular, include one or more options to renew, with renewal terms that can extend the lease term from one As the implicit rate in the Company's leases is not readily determinable, the Company calculates its lease liabilities using discount rates based upon the Company’s incremental secured borrowing rate, which contemplates and reflects a particular geographical region’s interest rate for the leases active within that region of the Company’s global operations. The Company further utilizes a portfolio approach by assigning a “short” rate to contracts with lease terms of 10 years or less and a “long” rate for contracts greater than 10 years. The following table sets forth the balance sheet location and values of the Company’s lease assets and lease liabilities at September 27, 2020 and December 31, 2019: Classification Balance Sheet Location September 27, 2020 December 31, 2019 Lease Assets Operating lease assets Right of Use Asset - Operating Leases $ 306,077 $ 298,393 Finance lease assets Other Assets 45,931 34,858 Lease assets held for sale Assets held for sale 24,148 — Total lease assets $ 376,156 $ 333,251 Lease Liabilities Current operating lease liabilities Accrued expenses and other $ 50,130 $ 54,048 Current finance lease liabilities Notes payable and current portion of debt 4,196 10,803 Lease liabilities held for sale Liabilities held for sale 24,136 — Total current lease liabilities $ 78,462 $ 64,851 Noncurrent operating lease liabilities Noncurrent Operating Lease Liabilities $ 268,790 $ 253,992 Noncurrent finance lease liabilities Long-term Debt, Net of Current Portion 39,850 22,274 Total noncurrent lease liabilities $ 308,640 $ 276,266 Total lease liabilities $ 387,102 $ 341,117 Certain of the Company’s leases include variable costs. Variable costs include lease payments that were volume or usage-driven in accordance with the use of the underlying asset, and also non-lease components that were incurred based upon actual terms rather than contractually fixed amounts. In addition, variable costs are incurred for lease payments that are indexed to a change in rate or index. Because the right of use asset recorded on the balance sheet was determined based upon factors considered at the commencement date, subsequent changes in the rate or index that were not contemplated in the right of use asset balances recorded on the balance sheet result in variable expenses being incurred when paid during the lease term. The following table sets forth the components of the Company's total lease cost for the three- and nine-month periods ended September 27, 2020 and September 29, 2019: Three Months Ended Nine Months Ended Lease Cost September 27, 2020 September 29, 2019 September 27, 2020 September 29, 2019 Operating lease cost (a) $ 18,192 $ 15,502 $ 46,903 $ 46,818 Finance lease cost: Amortization of lease asset (a) (b) 1,061 2,036 5,999 6,158 Interest on lease liabilities (c) 258 214 721 735 Variable lease cost (a) (d) 7,455 10,657 29,316 27,626 Total lease cost $ 26,966 $ 28,409 $ 82,939 $ 81,337 (a) Production-related and administrative amounts are included in cost of sales and selling, general and administrative expenses, respectively. (b) Included in depreciation and amortization. (c) Included in interest expense. (d) Also includes short term lease costs, which are deemed immaterial . The following table sets forth certain lease-related information for the nine months ended September 27, 2020 and September 29, 2019: Nine months ended September 27, 2020 Nine Months Ended September 29, 2019 Cash paid for amounts included in the measurement of lease liabilities: Operating cash flows used by operating leases $ 43,858 $ 46,374 Operating cash flows used by finance leases $ 721 $ 735 Financing cash flows used by finance leases $ 6,440 $ 7,593 Leased assets obtained in exchange for new operating lease liabilities $ 84,578 $ 18,053 Leased assets obtained in exchange for new finance lease liabilities $ 19,122 $ 1,186
Leases	Leases The Company routinely enters into leasing arrangements for real estate (including manufacturing facilities, office space, warehouses, and packaging centers), transportation equipment (automobiles, forklifts, and trailers), and office equipment (copiers and postage machines). The assessment of the certainty associated with the exercise of various lease renewal, termination, and purchase options included in the Company's lease contracts is at the Company's sole discretion. Most real estate leases, in particular, include one or more options to renew, with renewal terms that can extend the lease term from one As the implicit rate in the Company's leases is not readily determinable, the Company calculates its lease liabilities using discount rates based upon the Company’s incremental secured borrowing rate, which contemplates and reflects a particular geographical region’s interest rate for the leases active within that region of the Company’s global operations. The Company further utilizes a portfolio approach by assigning a “short” rate to contracts with lease terms of 10 years or less and a “long” rate for contracts greater than 10 years. The following table sets forth the balance sheet location and values of the Company’s lease assets and lease liabilities at September 27, 2020 and December 31, 2019: Classification Balance Sheet Location September 27, 2020 December 31, 2019 Lease Assets Operating lease assets Right of Use Asset - Operating Leases $ 306,077 $ 298,393 Finance lease assets Other Assets 45,931 34,858 Lease assets held for sale Assets held for sale 24,148 — Total lease assets $ 376,156 $ 333,251 Lease Liabilities Current operating lease liabilities Accrued expenses and other $ 50,130 $ 54,048 Current finance lease liabilities Notes payable and current portion of debt 4,196 10,803 Lease liabilities held for sale Liabilities held for sale 24,136 — Total current lease liabilities $ 78,462 $ 64,851 Noncurrent operating lease liabilities Noncurrent Operating Lease Liabilities $ 268,790 $ 253,992 Noncurrent finance lease liabilities Long-term Debt, Net of Current Portion 39,850 22,274 Total noncurrent lease liabilities $ 308,640 $ 276,266 Total lease liabilities $ 387,102 $ 341,117 Certain of the Company’s leases include variable costs. Variable costs include lease payments that were volume or usage-driven in accordance with the use of the underlying asset, and also non-lease components that were incurred based upon actual terms rather than contractually fixed amounts. In addition, variable costs are incurred for lease payments that are indexed to a change in rate or index. Because the right of use asset recorded on the balance sheet was determined based upon factors considered at the commencement date, subsequent changes in the rate or index that were not contemplated in the right of use asset balances recorded on the balance sheet result in variable expenses being incurred when paid during the lease term. The following table sets forth the components of the Company's total lease cost for the three- and nine-month periods ended September 27, 2020 and September 29, 2019: Three Months Ended Nine Months Ended Lease Cost September 27, 2020 September 29, 2019 September 27, 2020 September 29, 2019 Operating lease cost (a) $ 18,192 $ 15,502 $ 46,903 $ 46,818 Finance lease cost: Amortization of lease asset (a) (b) 1,061 2,036 5,999 6,158 Interest on lease liabilities (c) 258 214 721 735 Variable lease cost (a) (d) 7,455 10,657 29,316 27,626 Total lease cost $ 26,966 $ 28,409 $ 82,939 $ 81,337 (a) Production-related and administrative amounts are included in cost of sales and selling, general and administrative expenses, respectively. (b) Included in depreciation and amortization. (c) Included in interest expense. (d) Also includes short term lease costs, which are deemed immaterial . The following table sets forth certain lease-related information for the nine months ended September 27, 2020 and September 29, 2019: Nine months ended September 27, 2020 Nine Months Ended September 29, 2019 Cash paid for amounts included in the measurement of lease liabilities: Operating cash flows used by operating leases $ 43,858 $ 46,374 Operating cash flows used by finance leases $ 721 $ 735 Financing cash flows used by finance leases $ 6,440 $ 7,593 Leased assets obtained in exchange for new operating lease liabilities $ 84,578 $ 18,053 Leased assets obtained in exchange for new finance lease liabilities $ 19,122 $ 1,186

Revenue Recognition

Revenue Recognition	9 Months Ended
	Sep. 27, 2020
Revenue from Contract with Customer [Abstract]
Revenue Recognition	Revenue RecognitionThe Company records revenue when control is transferred to the customer, which is either upon shipment or over time in cases where the Company is entitled to payment with margin for products produced that are customer specific without alternative use. The Company recognizes over time revenue under the input method as goods are produced. Revenue that is recognized at a point in time is recognized when the customer obtains control of the goods. Customers obtain control either when goods are delivered to the customer facility, if the Company is responsible for arranging transportation, or when picked up by the customer's designated carrier. The Company commonly enters into Master Supply Arrangements with customers to provide goods and/or services over specific time periods. Customers submit purchase orders with quantities and prices to create a contract for accounting purposes. Shipping and handling expenses are included in "Cost of Sales," and freight charged to customers is included in "Net Sales" in the Company's Condensed Consolidated Statements of Income. The Company has rebate agreements with certain customers. These rebates are recorded as reductions of revenue and are accrued using sales data and rebate percentages specific to each customer agreement. Accrued customer rebates are included in "Accrued expenses and other" in the Company's Condensed Consolidated Balance Sheets. Payment terms under the Company's sales arrangements are short term, generally no longer than 120 days. The Company does provide prompt payment discounts to certain customers if invoices are paid within a predetermined period. Prompt payment discounts are treated as a reduction of revenue and are determinable within a short time period following the sale. The following table sets forth information about receivables, contract assets, and liabilities from contracts with customers. Contract assets and liabilities are reported in "Other receivables" and "Accrued expenses and other," respectively, on the Company's Condensed Consolidated Balance Sheets. September 27, 2020 December 31, 2019 Contract Assets $ 57,288 $ 56,364 Contract Liabilities $ (18,813) $ (17,047) Significant changes in the contract assets and liabilities balances during the nine months ended September 27, 2020 and the year ended December 31, 2019 were as follows: September 27, 2020 December 31, 2019 Contract Contract Contract Contract Beginning Balance $ 56,364 $ (17,047) $ 48,786 $ (18,533) Revenue deferred or rebates accrued — (25,840) — (29,062) Recognized as revenue 6,315 8,473 Rebates paid to customers — 17,759 — 22,075 Increases due to rights to consideration for customer specific goods produced, but not billed during the period 57,288 — 51,797 — Transferred to receivables from contract assets recognized at the beginning of the period (56,364) — (48,786) — Acquired as part of a business combination — — 4,567 — Ending Balance $ 57,288 $ (18,813) $ 56,364 $ (17,047) Contract assets and liabilities are generally short in duration given the nature of products produced by the Company. Contract assets represent goods produced without alternative use for which the Company is entitled to payment with margin prior to shipment. Upon shipment, the Company is entitled to bill the customer, and therefore amounts included in contract assets will be reduced with the recording of an account receivable as they represent an unconditional right to payment. Contract liabilities represent revenue deferred due to pricing mechanisms utilized by the Company in certain multi-year arrangements, volume rebates, and payments received in advance. For multi-year arrangements with pricing mechanisms, the Company will generally defer revenue during the first half of the arrangement, and will release the deferral over the back half of the contract term. The Company's reportable segments are aligned by product nature as disclosed in Note 15. The following tables set forth information about revenue disaggregated by primary geographic regions for the three-month periods ended September 27, 2020 and September 29, 2019. The tables also include a reconciliation of disaggregated revenue with reportable segments. Three months ended September 27, 2020 Consumer Display and Paper and Protective Total Primary Geographical Markets: United States $ 414,070 $ 53,296 $ 272,810 $ 108,406 $ 848,582 Europe 107,849 84,314 78,780 4,953 275,896 Canada 22,131 — 17,750 — 39,881 Asia 19,710 — 61,463 147 81,320 Other 19,976 — 28,509 18,150 66,635 Total $ 583,736 $ 137,610 $ 459,312 $ 131,656 $ 1,312,314 Three months ended September 29, 2019 Consumer Packaging Display and Paper and Protective Total Primary Geographical Markets: United States $ 415,567 $ 59,688 $ 279,908 $ 104,082 $ 859,245 Europe 99,276 83,888 83,421 6,456 273,041 Canada 26,567 — 26,960 — 53,527 Asia 17,714 — 71,313 496 89,523 Other 22,244 1,440 34,227 20,684 78,595 Total $ 581,368 $ 145,016 $ 495,829 $ 131,718 $ 1,353,931 The following tables set forth information about revenue disaggregated by primary geographic regions for the nine-month periods ended September 27, 2020 and September 29, 2019. The tables also include a reconciliation of disaggregated revenue with reportable segments. Nine months ended September 27, 2020 Consumer Display and Paper and Protective Total Primary Geographical Markets: United States $ 1,284,095 $ 156,809 $ 808,810 $ 278,671 $ 2,528,385 Europe 313,199 209,460 237,599 15,648 775,906 Canada 74,708 — 64,322 — 139,030 Asia 53,993 — 170,046 535 224,574 Other 60,779 — 87,957 44,464 193,200 Total $ 1,786,774 $ 366,269 $ 1,368,734 $ 339,318 $ 3,861,095 Nine months ended September 29, 2019 Consumer Packaging Display and Paper and Protective Total Primary Geographical Markets: United States $ 1,268,863 $ 187,347 $ 817,364 $ 309,318 $ 2,582,892 Europe 306,495 225,695 262,084 17,918 812,192 Canada 82,706 — 89,696 — 172,402 Asia 51,072 — 209,961 1,932 262,965 Other 64,698 4,361 104,089 61,758 234,906 Total $ 1,773,834 $ 417,403 $ 1,483,194 $ 390,926 $ 4,065,357

Segment Reporting

Segment Reporting	9 Months Ended
	Sep. 27, 2020
Segment Reporting [Abstract]
Segment Reporting	Segment Reporting The Company reports its financial results in four reportable segments: Consumer Packaging, Display and Packaging, Paper and Industrial Converted Products, and Protective Solutions. The Consumer Packaging segment includes the following products and services: round and shaped rigid containers and trays (both composite and thermoformed plastic); extruded and injection-molded plastic products; printed flexible packaging; global brand artwork management; and metal and peelable membrane ends and closures. The Display and Packaging segment includes the following products and services: designing, manufacturing, assembling, packing and distributing temporary, semi-permanent and permanent point-of-purchase displays; supply chain management services, including contract packing, fulfillment and scalable service centers; retail packaging, including printed backer cards, thermoformed blisters and heat sealing equipment; and paper amenities, such as coasters and glass covers. The Paper and Industrial Converted Products segment includes the following products: paperboard tubes, cones, and cores; fiber-based construction tubes; wooden, metal and composite wire and cable reels and spools; and recycled paperboard, corrugating medium, recovered paper and material recycling services. The Protective Solutions segment includes the following products: custom-engineered, paperboard-based and expanded foam protective packaging and components; and temperature-assured packaging. The following table sets forth net sales, intersegment sales and operating profit for the Company’s reportable segments. “Segment operating profit” is defined as the segment’s portion of “Operating profit” excluding restructuring and asset impairment charges, acquisition expenses, interest income and expense, income taxes or certain other items, if any, the exclusion of which the Company believes improves comparability and analysis of the financial performance of the business. General corporate expenses have been allocated as operating costs to each of the Company’s reportable segments. SEGMENT FINANCIAL INFORMATION Three Months Ended Nine Months Ended September 27, 2020 September 29, 2019 September 27, 2020 September 29, 2019 Net sales: Consumer Packaging $ 583,736 $ 581,368 $ 1,786,774 $ 1,773,834 Display and Packaging 137,610 145,016 366,269 417,403 Paper and Industrial Converted Products 459,312 495,829 1,368,734 1,483,194 Protective Solutions 131,656 131,718 339,318 390,926 Consolidated $ 1,312,314 $ 1,353,931 $ 3,861,095 $ 4,065,357 Intersegment sales: Consumer Packaging $ 2,779 $ 1,351 $ 7,503 $ 3,394 Display and Packaging 1,079 1,112 3,546 3,393 Paper and Industrial Converted Products 30,873 33,485 87,933 98,674 Protective Solutions 402 255 1,105 1,080 Consolidated $ 35,133 $ 36,203 $ 100,087 $ 106,541 Operating profit: Segment operating profit: Consumer Packaging $ 67,897 $ 56,744 $ 221,827 $ 181,801 Display and Packaging 10,773 8,913 24,848 21,256 Paper and Industrial Converted 34,366 59,427 118,343 169,043 Protective Solutions 17,505 13,983 35,991 39,262 Restructuring/Asset impairment charges (24,149) (6,615) (59,633) (30,642) Other, net 352 6,096 (802) 4,484 Consolidated $ 106,744 $ 138,548 $ 340,574 $ 385,204

Commitments and Contingencies

Commitments and Contingencies	9 Months Ended
	Sep. 27, 2020
Commitments and Contingencies Disclosure [Abstract]
Commitments and Contingencies	Commitments and Contingencies Pursuant to U.S. GAAP, accruals for estimated losses are recorded at the time information becomes available indicating that losses are probable and that the amounts are reasonably estimable. As is the case with other companies in similar industries, the Company faces exposure from actual or potential claims and legal proceedings from a variety of sources. Some of these exposures, as discussed below, have the potential to be material. Environmental Matters The Company is subject to a variety of environmental and pollution control laws and regulations in all jurisdictions in which it operates. Spartanburg In connection with its acquisition of Tegrant in November 2011, the Company identified potential environmental contamination at a site in Spartanburg, South Carolina. The total remediation cost of the Spartanburg site was estimated to be $17,400 at the time of acquisition and an accrual in this amount was recorded on Tegrant’s opening balance sheet. Since the acquisition, the Company has spent a total of $1,689 on remediation of the Spartanburg site. Based on favorable developments at the Spartanburg site, the Company reduced its environmental reserve by $10,000 in the third quarter of 2019 in order to reflect its revised best estimate of what it is likely to pay in order to complete the remediation. This prior year adjustment resulted in a $10,000 reduction in "Selling, general and administrative expenses" in the third quarter of 2019. At September 27, 2020 and December 31, 2019, the Company's accrual for environmental contingencies related to the Spartanburg site totaled $5,711 and $5,789, respectively. The Company cannot currently estimate its potential liability, damages or range of potential loss, if any, beyond the amounts accrued with respect to this exposure. However, the Company does not believe that the resolution of this matter has a reasonable possibility of having a material adverse effect on the Company's financial statements. Other environmental matters The Company has been named as a potentially responsible party at several other environmentally contaminated sites. All of the sites are also the responsibility of other parties. The potential remediation liabilities are shared with such other parties, and, in most cases, the Company’s share, if any, cannot be reasonably estimated at the current time. However, the Company does not believe that the resolution of these matters has a reasonable possibility of having a material adverse effect on the Company's financial statements. At September 27, 2020 and December 31, 2019, the Company's accrual for these other sites totaled $2,497 and $2,938 , respectively. Summary As of September 27, 2020 and December 31, 2019, the Company (and its subsidiaries) had accrued $8,208 and $8,727, respectively, related to environmental contingencies. These accruals are included in “Accrued expenses and other” on the Company’s Condensed Consolidated Balance Sheets. Other Legal Matters In addition to those matters described above, the Company is subject to other various legal proceedings, claims, and litigation arising in the ordinary course of business. While the outcome of these matters could differ from management’s expectations, the Company does not believe the resolution of these matters has a reasonable possibility of having a material adverse effect on the Company’s financial statements.

New Accounting Pronouncements (

New Accounting Pronouncements (Policies)	9 Months Ended
	Sep. 27, 2020
Accounting Changes and Error Corrections [Abstract]
New Accounting Pronouncements	In June 2016, the FASB issued ASU 2016-13, "Measurement of Credit Losses on Financial Instruments," which requires measurement and recognition of expected versus incurred credit losses for financial assets held. The measurement of expected credit losses should be based on relevant information about past events, including historical experience, current conditions, and reasonable and supportable forecasts that affect the collectibility of the reported amount. The guidance is effective for annual reporting periods beginning after December 15, 2019, and interim periods within those annual periods. The Company adopted ASU 2016-13
Fair Value Measurements	Fair value is defined as an exit price, representing the amount that would be received to sell an asset or paid to transfer a liability in an orderly transaction between market participants. Fair value is a market-based measurement that is determined based on assumptions that market participants would use in pricing an asset or liability. A three-tier fair value hierarchy is used to prioritize the inputs in measuring fair value as follows: Level 1 – Observable inputs such as quoted market prices in active markets; Level 2 – Inputs, other than quoted prices in active markets, that are observable either directly or indirectly; and Level 3 – Unobservable inputs for which there is little or no market data, which require the reporting entity to develop its own assumptions.
Commitments and Contingencies	Pursuant to U.S. GAAP, accruals for estimated losses are recorded at the time information becomes available indicating that losses are probable and that the amounts are reasonably estimable. As is the case with other companies in similar industries, the Company faces exposure from actual or potential claims and legal proceedings from a variety of sources.

Basis of Interim Presentation (

Basis of Interim Presentation (Tables)	9 Months Ended
	Sep. 27, 2020
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Schedule of Assets and Liabilities Held-for-sale	In conjunction with the pending sale of the Company's European contract packaging business, the following major classes of assets and liabilities were classified as held for sale on the Company's Condensed Consolidated Balance Sheet as of September 27, 2020: Assets: Trade accounts receivable, net of allowances $ 43,411 Inventories 36,278 Other receivables 9,179 Prepaid expenses 2,516 Current assets 91,384 Property, plant and equipment, net 7,766 Goodwill 76,828 Long-term deferred income taxes 1,943 Right of Use Asset - Operating leases 23,337 Other assets 811 Noncurrent assets 110,685 Assets held for sale $ 202,069 Liabilities: Payable to suppliers $ 54,907 Accrued expenses and other 15,351 Notes payable and current portion of long-term debt 259 Taxes on income 1,198 Current liabilities 71,715 Long-term debt 554 Noncurrent operating lease liabilities 18,824 Other long-term liabilities 2,756 Noncurrent liabilities 22,134 Liabilities held for sale $ 93,849

Acquisitions and Dispositions (

Acquisitions and Dispositions (Tables)	9 Months Ended
	Sep. 27, 2020
Business Combinations [Abstract]
Schedule of preliminary fair value of assets acquired and measurement period adjustments	The preliminary fair values of the assets acquired in connection with the Can Packaging and Jacksonville acquisitions are as follows: Can Packaging Jacksonville Trade accounts receivable $ 5,256 $ — Inventories 3,225 150 Property, plant and equipment 10,636 2,773 Goodwill 12,359 1,050 Other intangible assets 25,746 — Payable to suppliers (2,811) — Other net tangible assets/(liabilities) (3,530) — Deferred income taxes, net (5,408) — Net Assets $ 45,473 $ 3,973 The following measurement period adjustments were made to the previously disclosed preliminary fair values: TEQ Corenso Trade accounts receivable $ (56) $ — Inventories (433) (536) Property, plant and equipment (2,927) — Goodwill 3,251 616 Other intangible assets 800 — Payable to suppliers 6 (80) Other net tangible assets/liabilities (524) — Deferred income taxes, net (302) — Change in consideration paid $ (185) $ —

Shareholders' Equity (Tables)

Shareholders' Equity (Tables)	9 Months Ended
	Sep. 27, 2020
Equity [Abstract]
Earnings per share	The following table sets forth the computation of basic and diluted earnings per share: Three Months Ended Nine Months Ended September 27, 2020 September 29, 2019 September 27, 2020 September 29, 2019 Numerator: Net income attributable to Sonoco $ 83,449 $ 92,064 $ 219,105 $ 246,886 Denominator: Weighted average common shares outstanding: Basic 100,974 100,778 100,935 100,727 Dilutive effect of stock-based compensation 271 408 220 431 Diluted 101,245 101,186 101,155 101,158 Net income attributable to Sonoco per common share: Basic $ 0.83 $ 0.91 $ 2.17 $ 2.45 Diluted $ 0.82 $ 0.91 $ 2.17 $ 2.44 Cash dividends $ 0.43 $ 0.43 $ 1.29 $ 1.27
Schedule of antidilutive securities excluded from computation of earnings per share	The average numbers of SARs that were not dilutive and, therefore, not included in the computation of diluted earnings per share during the three- and nine- month periods ended September 27, 2020 and September 29, 2019 were as follows: Three Months Ended Nine Months Ended September 27, 2020 September 29, 2019 September 27, 2020 September 29, 2019 Anti-dilutive stock appreciation rights 752 533 844 458

Restructuring and Asset Impai_2

Restructuring and Asset Impairment (Tables)	9 Months Ended
	Sep. 27, 2020
Restructuring and Related Activities [Abstract]
Restructuring and restructuring-related asset impairment expenses by type incurred and by reportable segment	The table below sets forth restructuring and restructuring-related asset impairment charges by type incurred: Three Months Ended Nine Months Ended September 27, 2020 September 29, 2019 September 27, 2020 September 29, 2019 Severance and Termination Benefits $ 4,607 $ 4,922 $ 29,866 $ 16,421 Asset Impairment / Disposal of Assets 16,605 (948) 25,364 6,336 Other Costs 2,937 2,641 4,403 7,885 Total Restructuring/Asset Impairment Charges $ 24,149 $ 6,615 $ 59,633 $ 30,642 The table below sets forth restructuring and restructuring-related asset impairment charges by reportable segment: Three Months Ended Nine Months Ended September 27, 2020 September 29, 2019 September 27, 2020 September 29, 2019 Consumer Packaging $ 16,662 $ 6,363 $ 22,274 $ 24,105 Display and Packaging 1,391 106 4,939 992 Paper and Industrial Converted Products 6,990 1,066 30,035 3,540 Protective Solutions (793) (930) 375 73 Corporate (101) 10 2,010 1,932 Total Restructuring/Asset Impairment Charges $ 24,149 $ 6,615 $ 59,633 $ 30,642
Restructuring accrual activity	The following table sets forth the activity in the restructuring accrual included in “Accrued expenses and other” on the Company’s Condensed Consolidated Balance Sheets: Severance Asset Other Total Accrual Activity Liability at December 31, 2019 $ 10,765 $ — $ 592 $ 11,357 2020 charges 29,866 25,364 4,403 59,633 Cash receipts/(payments) (25,749) 3,527 (4,817) (27,039) Asset write downs/disposals — (28,891) 1,143 (27,748) Foreign currency translation 127 1 128 Liability at September 27, 2020 $ 15,009 $ — $ 1,322 $ 16,331

Accumulated Other Comprehensi_2

Accumulated Other Comprehensive Loss (Tables)	9 Months Ended
	Sep. 27, 2020
Equity [Abstract]
Components of accumulated other comprehensive loss	The following table summarizes the components of accumulated other comprehensive loss and the changes in the balances of each component of accumulated other comprehensive loss, net of tax as applicable, for the nine months ended September 27, 2020 and September 29, 2019: Foreign Defined Cash Accumulated Balance at December 31, 2019 $ (241,994) $ (574,413) $ (396) $ (816,803) Other comprehensive loss before reclassifications (35,447) (885) (3,362) (39,694) Amounts reclassified from accumulated other comprehensive loss to net income — 16,361 2,922 19,283 Other comprehensive (loss)/income (35,447) 15,476 (440) (20,411) Balance at September 27, 2020 $ (277,441) $ (558,937) $ (836) $ (837,214) Balance at December 31, 2018 $ (251,102) $ (487,380) $ (2,431) $ (740,913) Other comprehensive (loss)/income before reclassifications (26,863) (27,781) 1,434 (53,210) Amounts reclassified from accumulated other comprehensive loss to net income — 19,894 (34) 19,860 Amounts reclassified from accumulated other comprehensive loss to fixed assets — — (110) (110) Other comprehensive (loss)/income (26,863) (7,887) 1,290 (33,460) Balance at September 29, 2019 $ (277,965) $ (495,267) $ (1,141) $ (774,373)
Effects on net income of significant amounts reclassified from accumulated other comprehensive loss	The following table summarizes the effects on net income of significant amounts reclassified from each component of accumulated other comprehensive loss for the three- and nine-month periods ended September 27, 2020 and September 29, 2019: Amount Reclassified from Accumulated Three Months Ended Nine Months Ended Details about Accumulated Other September 27, September 29, September 27, September 29, Affected Line Item in Gains/(losses) on cash flow hedges Foreign exchange contracts $ (1,723) $ 139 $ (6,245) $ 988 Net sales Foreign exchange contracts 867 (348) 3,744 (1,014) Cost of sales Commodity contracts (792) 11 (1,346) 127 Cost of sales $ (1,648) $ (198) $ (3,847) $ 101 Income before income taxes 403 (11) 925 (67) Provision for income taxes $ (1,245) $ (209) $ (2,922) $ 34 Net income Defined benefit pension items Effect of curtailment loss (a) $ — $ — (31) $ — Non-operating pension costs Effect of settlement loss (a) — (796) (661) (2,343) Non-operating pension costs Amortization of defined benefit pension items (a) (7,103) (5,905) (21,185) (24,360) Non-operating pension costs $ (7,103) $ (6,701) $ (21,877) $ (26,703) Income before income taxes 1,800 1,709 5,516 6,809 Provision for income taxes $ (5,303) $ (4,992) $ (16,361) $ (19,894) Net income Total reclassifications for the period $ (6,548) $ (5,201) $ (19,283) $ (19,860) Net income (a) See Note 11 for additional details.
Before and after tax amounts for comprehensive income (loss) components	The following table summarizes the before and after tax amounts for the various components of other comprehensive income/(loss) for the three-month periods ended September 27, 2020 and September 29, 2019: Three months ended September 27, 2020 Three months ended September 29, 2019 Before Tax Tax After Tax Before Tax Tax After Tax Foreign currency items: Net other comprehensive loss from foreign currency items $ 24,674 $ — $ 24,674 $ (33,584) $ — $ (33,584) Defined benefit pension items: Other comprehensive income/(loss) before (31) 8 (23) (29,190) 7,348 (21,842) Amounts reclassified from accumulated other 7,103 (1,800) 5,303 6,701 (1,709) 4,992 Net other comprehensive income/(loss) from 7,072 (1,792) 5,280 (22,489) 5,639 (16,850) Gains and losses on cash flow hedges: Other comprehensive income/(loss) before 1,376 (336) 1,040 (279) (14) (293) Amounts reclassified from accumulated other 1,648 (403) 1,245 198 11 209 Amounts reclassified from accumulated other — — — (9) — (9) Net other comprehensive income/(loss) from 3,024 (739) 2,285 (90) (3) (93) Other comprehensive income/(loss): $ 34,770 $ (2,531) $ 32,239 $ (56,163) $ 5,636 $ (50,527) The following table summarizes the before and after tax amounts for the various components of other comprehensive income/(loss) for the nine-month periods ended September 27, 2020 and September 29, 2019: Nine months ended September 27, 2020 Nine months ended September 29, 2019 Before Tax Tax After Tax Before Tax Tax After Tax Foreign currency items: Net other comprehensive (loss)/income from foreign currency items (a) $ (27,866) $ (7,581) $ (35,447) $ (26,863) $ — $ (26,863) Defined benefit pension items: Other comprehensive (loss)/income before (1,177) 292 (885) (36,828) 9,047 (27,781) Amounts reclassified from accumulated other 21,877 (5,516) 16,361 26,703 (6,809) 19,894 Net other comprehensive income/(loss) from 20,700 (5,224) 15,476 (10,125) 2,238 (7,887) Gains and losses on cash flow hedges: Other comprehensive (loss)/income before (4,345) 983 (3,362) 1,915 (481) 1,434 Amounts reclassified from accumulated other 3,847 (925) 2,922 (101) 67 (34) Amounts reclassified from accumulated other — — — (110) — (110) Net other comprehensive (loss)/income from (498) 58 (440) 1,704 (414) 1,290 Other comprehensive income/(loss): $ (7,664) $ (12,747) $ (20,411) $ (35,284) $ 1,824 $ (33,460) (a) Other comprehensive loss from foreign currency items for the nine months ended September 27, 2020, includes the settlement gain and corresponding tax provision related to the termination of a net investment hedge. See Note 9 for more information.

Goodwill and Other Intangible_2

Goodwill and Other Intangible Assets (Tables)	9 Months Ended
	Sep. 27, 2020
Goodwill and Intangible Assets Disclosure [Abstract]
Changes in goodwill by segment	A summary of the changes in goodwill by segment for the nine months ended September 27, 2020 is as follows: Consumer Display Paper and Protective Total Goodwill at December 31, 2019 $ 691,243 $ 203,414 $ 303,041 $ 231,648 $ 1,429,346 2020 Acquisitions 12,359 — 1,050 — 13,409 Reclassified to assets held for sale — (76,828) — — (76,828) Foreign currency translation (685) — 442 (268) (511) Measurement period adjustments 3,251 — 616 — 3,867 Goodwill at September 27, 2020 $ 706,168 $ 126,586 $ 305,149 $ 231,380 $ 1,369,283
Summary of other intangible assets	A summary of other intangible assets as of September 27, 2020 and December 31, 2019 is as follows: September 27, December 31, Other Intangible Assets, gross: Patents $ 32,764 $ 26,096 Customer lists 651,828 632,036 Trade names 32,409 32,427 Proprietary technology 24,492 24,525 Other 2,808 2,297 Other Intangible Assets, gross $ 744,301 $ 717,381 Accumulated Amortization: Patents $ (13,831) $ (11,669) Customer lists (323,052) (287,831) Trade names (11,677) (9,985) Proprietary technology (19,524) (17,910) Other (1,843) (1,694) Total Accumulated Amortization $ (369,927) $ (329,089) Other Intangible Assets, net $ 374,374 $ 388,292

Debt (Table)

Debt (Table)	9 Months Ended
	Sep. 27, 2020
Debt Disclosure [Abstract]
Schedule of Debt	Details of the Company's debt at September 27, 2020 and December 31, 2019 are as follows: September 27, December 31, Commercial paper $ — $ 250,000 U.S. Bank term loan due March 2021 100,000 — Wells Fargo term loan due May 2021 200,000 200,000 Syndicated bank term loan due July 2022 140,022 146,569 1.0% Euro loan due May 2021 174,416 167,272 9.2% debentures due August 2021 4,320 4,318 4.375% debentures due November 2021 249,660 249,428 3.125% debentures due May 2030 594,539 — 5.75% debentures due November 2040 599,270 599,244 Other foreign denominated debt 15,277 16,734 Finance lease obligations 44,046 33,077 Other notes 14,447 14,727 Total debt $ 2,135,997 $ 1,681,369 Less current portion and short-term notes 508,960 488,234 Long-term debt $ 1,627,037 $ 1,193,135

Financial Instruments and Der_2

Financial Instruments and Derivatives (Tables)	9 Months Ended
	Sep. 27, 2020
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Carrying amounts and fair values of financial instruments	The following table sets forth the carrying amounts and fair values of the Company’s significant financial instruments for which the carrying amount differs from the fair value. September 27, 2020 December 31, 2019 Carrying Fair Carrying Fair Long-term debt, net of current portion $ 1,627,037 $ 1,880,544 $ 1,193,135 $ 1,351,397
Net positions of foreign contracts	The net positions of these contracts at September 27, 2020 were as follows (in thousands): Currency Action Quantity Colombian peso purchase 3,927,650 Mexican peso purchase 218,910 Polish zloty purchase 24,240 Czech koruna purchase 10,162 Canadian dollar purchase 8,592 British pound purchase 1,891 Turkish lira purchase 907 Euro purchase 199 New Zealand dollar sell (621) Australian dollar sell (1,312) Russian ruble sell (51,701)
Net positions of other derivatives contracts	The net currency positions of these contracts at September 27, 2020, were as follows (in thousands): Currency Action Quantity Indonesian rupiah purchase 17,858,489 Colombian peso purchase 8,787,528 Mexican peso purchase 483,909 Canadian dollar purchase 6,346
Location and fair values of derivative instruments	The following table sets forth the location and fair values of the Company’s derivative instruments at September 27, 2020 and December 31, 2019: Description Balance Sheet Location September 27, 2020 December 31, 2019 Derivatives designated as hedging instruments: Commodity Contracts Prepaid expenses $ 256 $ — Commodity Contracts Other assets $ 173 $ — Commodity Contracts Accrued expenses and other $ (74) $ (1,625) Foreign Exchange Contracts Prepaid expenses $ 223 $ 1,236 Foreign Exchange Contracts Accrued expenses and other $ (1,166) $ (178) Foreign Exchange Contracts Other liabilities $ (430) $ — Derivatives not designated as hedging instruments: Commodity Contracts Prepaid expenses $ 10 $ — Foreign Exchange Contracts Prepaid expenses $ — $ 88 Foreign Exchange Contracts Accrued expenses and other $ (112) $ (34)
Effect of derivative instruments on financial performance	The following tables set forth the effect of the Company’s derivative instruments on financial performance for the three months ended September 27, 2020 and September 29, 2019: Description Amount of Gain or Location of Gain Amount of Gain or Derivatives in Cash Flow Hedging Relationships: Three months ended September 27, 2020 Foreign Exchange Contracts $ 90 Net sales $ (1,723) Cost of sales $ 867 Commodity Contracts $ 1,286 Cost of sales $ (792) Three months ended September 29, 2019 Foreign Exchange Contracts $ (957) Net sales $ 139 Cost of sales $ (348) Commodity Contracts $ 678 Cost of sales $ 11 Description Gain or (Loss) Location of Gain or (Loss) Recognized in Derivatives not Designated as Hedging Instruments: Three months ended September 27, 2020 Commodity Contracts $ (436) Cost of sales Foreign Exchange Contracts $ 486 Selling, general and administrative Three months ended September 29, 2019 Commodity Contracts $ — Cost of sales Foreign Exchange Contracts $ 161 Selling, general and administrative Three months ended September 27, 2020 Three months ended September 29, 2019 Description Revenue Cost of Revenue Cost of Total amount of income and expense line items presented in the Condensed Consolidated Statements of Income $ (1,723) $ 75 $ 139 $ (337) The effects of cash flow hedging: Gain or (loss) on cash flow hedging relationships: Foreign exchange contracts: Amount of gain or (loss) reclassified from accumulated other comprehensive income into net income $ (1,723) $ 867 $ 139 $ (348) Commodity contracts: Amount of gain or (loss) reclassified from accumulated other comprehensive income into net income $ — $ (792) $ — $ 11 The following tables set forth the effect of the Company’s derivative instruments on financial performance for the nine months ended September 27, 2020 and September 29, 2019: Description Amount of Gain or Location of Gain Amount of Gain or Derivatives in Cash Flow Hedging Relationships: Nine months ended September 27, 2020 Foreign Exchange Contracts $ (4,985) Net sales $ (6,245) Cost of sales $ 3,744 Commodity Contracts $ 640 Cost of sales $ (1,346) Nine months ended September 29, 2019 Foreign Exchange Contracts $ 1,901 Net sales $ 988 Cost of sales $ (1,014) Commodity Contracts $ 14 Cost of sales $ 127 Description Gain or (Loss) Location of Gain or (Loss) Recognized in Derivatives not Designated as Hedging Instruments: Nine months ended September 27, 2020 Commodity Contracts $ (252) Cost of sales Foreign Exchange Contracts $ (3,565) Selling, general and administrative Nine months ended September 29, 2019 Commodity Contracts $ — Cost of sales Foreign Exchange Contracts $ (411) Selling, general and administrative Nine months ended September 27, 2020 Nine months ended September 29, 2019 Description Revenue Cost of Revenue Cost of Total amount of income and expense line items presented in the Condensed Consolidated Statements of Income $ (6,245) $ 2,398 $ 988 $ (887) Gain or (loss) on cash flow hedging relationships: Foreign exchange contracts: Amount of gain or (loss) reclassified from accumulated other comprehensive income into net income $ (6,245) $ 3,744 $ 988 $ (1014) Commodity contracts: Amount of gain or (loss) reclassified from accumulated other comprehensive income into net income $ — $ (1,346) $ — $ 127

Fair Value Measurements (Tables

Fair Value Measurements (Tables)	9 Months Ended
	Sep. 27, 2020
Fair Value Disclosures [Abstract]
Assets and liabilities measured on recurring basis	The following table sets forth information regarding the Company’s financial assets and financial liabilities, excluding retirement and postretirement plan assets, measured at fair value on a recurring basis: Description September 27, 2020 Assets measured Level 1 Level 2 Level 3 Hedge derivatives, net: Commodity contracts $ 355 $ — $ — $ 355 $ — Foreign exchange contracts $ (1,373) $ — $ — $ (1,373) $ — Non-hedge derivatives, net: Commodity contracts 10 — — 10 — Foreign exchange contracts $ (112) $ — $ — $ (112) $ — Description December 31, 2019 Assets measured Level 1 Level 2 Level 3 Hedge derivatives, net: Commodity contracts $ (1,625) $ — $ — $ (1,625) $ — Foreign exchange contracts $ 1,058 $ — $ — $ 1,058 $ — Non-hedge derivatives, net: Foreign exchange contracts $ 54 $ — $ — $ 54 $ —

Employee Benefit Plans (Tables)

Employee Benefit Plans (Tables)	9 Months Ended
	Sep. 27, 2020
Retirement Benefits [Abstract]
Components of net periodic benefit cost	The components of net periodic benefit cost include the following: Three Months Ended Nine Months Ended September 27, 2020 September 29, 2019 September 27, 2020 September 29, 2019 Retirement Plans Service cost $ 881 $ 1,006 $ 2,966 $ 2,909 Interest cost 12,785 13,686 38,015 43,729 Expected return on plan assets (12,427) (13,114) (37,234) (51,443) Amortization of prior service cost 245 241 742 671 Amortization of net actuarial loss 7,136 5,993 21,270 24,673 Effect of curtailment loss — — 31 — Effect of settlement loss — 796 661 2,343 Net periodic benefit cost $ 8,620 $ 8,608 $ 26,451 $ 22,882 Retiree Health and Life Insurance Plans Service cost $ 89 $ 77 $ 265 $ 229 Interest cost 84 116 249 347 Expected return on plan assets (92) (179) (275) (535) Amortization of prior service credit (70) (124) (207) (371) Amortization of net actuarial gain (208) (205) (620) (613) Net periodic benefit income $ (197) $ (315) $ (588) $ (943)

Leases (Tables)

Leases (Tables)	9 Months Ended
	Sep. 27, 2020
Leases [Abstract]
Balance sheet location and values of Company's lease assets and lease liabilities	The following table sets forth the balance sheet location and values of the Company’s lease assets and lease liabilities at September 27, 2020 and December 31, 2019: Classification Balance Sheet Location September 27, 2020 December 31, 2019 Lease Assets Operating lease assets Right of Use Asset - Operating Leases $ 306,077 $ 298,393 Finance lease assets Other Assets 45,931 34,858 Lease assets held for sale Assets held for sale 24,148 — Total lease assets $ 376,156 $ 333,251 Lease Liabilities Current operating lease liabilities Accrued expenses and other $ 50,130 $ 54,048 Current finance lease liabilities Notes payable and current portion of debt 4,196 10,803 Lease liabilities held for sale Liabilities held for sale 24,136 — Total current lease liabilities $ 78,462 $ 64,851 Noncurrent operating lease liabilities Noncurrent Operating Lease Liabilities $ 268,790 $ 253,992 Noncurrent finance lease liabilities Long-term Debt, Net of Current Portion 39,850 22,274 Total noncurrent lease liabilities $ 308,640 $ 276,266 Total lease liabilities $ 387,102 $ 341,117
Components of Company's total lease costs and other lease related information	The following table sets forth the components of the Company's total lease cost for the three- and nine-month periods ended September 27, 2020 and September 29, 2019: Three Months Ended Nine Months Ended Lease Cost September 27, 2020 September 29, 2019 September 27, 2020 September 29, 2019 Operating lease cost (a) $ 18,192 $ 15,502 $ 46,903 $ 46,818 Finance lease cost: Amortization of lease asset (a) (b) 1,061 2,036 5,999 6,158 Interest on lease liabilities (c) 258 214 721 735 Variable lease cost (a) (d) 7,455 10,657 29,316 27,626 Total lease cost $ 26,966 $ 28,409 $ 82,939 $ 81,337 (a) Production-related and administrative amounts are included in cost of sales and selling, general and administrative expenses, respectively. (b) Included in depreciation and amortization. (c) Included in interest expense. (d) Also includes short term lease costs, which are deemed immaterial .
Schedule of Weighted Average Remaining Lease Terms, Discounts Rates and Other Lease Information	The following table sets forth certain lease-related information for the nine months ended September 27, 2020 and September 29, 2019: Nine months ended September 27, 2020 Nine Months Ended September 29, 2019 Cash paid for amounts included in the measurement of lease liabilities: Operating cash flows used by operating leases $ 43,858 $ 46,374 Operating cash flows used by finance leases $ 721 $ 735 Financing cash flows used by finance leases $ 6,440 $ 7,593 Leased assets obtained in exchange for new operating lease liabilities $ 84,578 $ 18,053 Leased assets obtained in exchange for new finance lease liabilities $ 19,122 $ 1,186

Revenue Recognition (Tables)

Revenue Recognition (Tables)	9 Months Ended
	Sep. 27, 2020
Revenue from Contract with Customer [Abstract]
Receivables, contracts assets and liabilities from contracts with customers	The following table sets forth information about receivables, contract assets, and liabilities from contracts with customers. Contract assets and liabilities are reported in "Other receivables" and "Accrued expenses and other," respectively, on the Company's Condensed Consolidated Balance Sheets. September 27, 2020 December 31, 2019 Contract Assets $ 57,288 $ 56,364 Contract Liabilities $ (18,813) $ (17,047) Significant changes in the contract assets and liabilities balances during the nine months ended September 27, 2020 and the year ended December 31, 2019 were as follows: September 27, 2020 December 31, 2019 Contract Contract Contract Contract Beginning Balance $ 56,364 $ (17,047) $ 48,786 $ (18,533) Revenue deferred or rebates accrued — (25,840) — (29,062) Recognized as revenue 6,315 8,473 Rebates paid to customers — 17,759 — 22,075 Increases due to rights to consideration for customer specific goods produced, but not billed during the period 57,288 — 51,797 — Transferred to receivables from contract assets recognized at the beginning of the period (56,364) — (48,786) — Acquired as part of a business combination — — 4,567 — Ending Balance $ 57,288 $ (18,813) $ 56,364 $ (17,047)
Disaggregation of revenue	The following tables set forth information about revenue disaggregated by primary geographic regions for the three-month periods ended September 27, 2020 and September 29, 2019. The tables also include a reconciliation of disaggregated revenue with reportable segments. Three months ended September 27, 2020 Consumer Display and Paper and Protective Total Primary Geographical Markets: United States $ 414,070 $ 53,296 $ 272,810 $ 108,406 $ 848,582 Europe 107,849 84,314 78,780 4,953 275,896 Canada 22,131 — 17,750 — 39,881 Asia 19,710 — 61,463 147 81,320 Other 19,976 — 28,509 18,150 66,635 Total $ 583,736 $ 137,610 $ 459,312 $ 131,656 $ 1,312,314 Three months ended September 29, 2019 Consumer Packaging Display and Paper and Protective Total Primary Geographical Markets: United States $ 415,567 $ 59,688 $ 279,908 $ 104,082 $ 859,245 Europe 99,276 83,888 83,421 6,456 273,041 Canada 26,567 — 26,960 — 53,527 Asia 17,714 — 71,313 496 89,523 Other 22,244 1,440 34,227 20,684 78,595 Total $ 581,368 $ 145,016 $ 495,829 $ 131,718 $ 1,353,931 The following tables set forth information about revenue disaggregated by primary geographic regions for the nine-month periods ended September 27, 2020 and September 29, 2019. The tables also include a reconciliation of disaggregated revenue with reportable segments. Nine months ended September 27, 2020 Consumer Display and Paper and Protective Total Primary Geographical Markets: United States $ 1,284,095 $ 156,809 $ 808,810 $ 278,671 $ 2,528,385 Europe 313,199 209,460 237,599 15,648 775,906 Canada 74,708 — 64,322 — 139,030 Asia 53,993 — 170,046 535 224,574 Other 60,779 — 87,957 44,464 193,200 Total $ 1,786,774 $ 366,269 $ 1,368,734 $ 339,318 $ 3,861,095 Nine months ended September 29, 2019 Consumer Packaging Display and Paper and Protective Total Primary Geographical Markets: United States $ 1,268,863 $ 187,347 $ 817,364 $ 309,318 $ 2,582,892 Europe 306,495 225,695 262,084 17,918 812,192 Canada 82,706 — 89,696 — 172,402 Asia 51,072 — 209,961 1,932 262,965 Other 64,698 4,361 104,089 61,758 234,906 Total $ 1,773,834 $ 417,403 $ 1,483,194 $ 390,926 $ 4,065,357

Segment Reporting (Tables)

Segment Reporting (Tables)	9 Months Ended
	Sep. 27, 2020
Segment Reporting [Abstract]
Segment financial information	SEGMENT FINANCIAL INFORMATION Three Months Ended Nine Months Ended September 27, 2020 September 29, 2019 September 27, 2020 September 29, 2019 Net sales: Consumer Packaging $ 583,736 $ 581,368 $ 1,786,774 $ 1,773,834 Display and Packaging 137,610 145,016 366,269 417,403 Paper and Industrial Converted Products 459,312 495,829 1,368,734 1,483,194 Protective Solutions 131,656 131,718 339,318 390,926 Consolidated $ 1,312,314 $ 1,353,931 $ 3,861,095 $ 4,065,357 Intersegment sales: Consumer Packaging $ 2,779 $ 1,351 $ 7,503 $ 3,394 Display and Packaging 1,079 1,112 3,546 3,393 Paper and Industrial Converted Products 30,873 33,485 87,933 98,674 Protective Solutions 402 255 1,105 1,080 Consolidated $ 35,133 $ 36,203 $ 100,087 $ 106,541 Operating profit: Segment operating profit: Consumer Packaging $ 67,897 $ 56,744 $ 221,827 $ 181,801 Display and Packaging 10,773 8,913 24,848 21,256 Paper and Industrial Converted 34,366 59,427 118,343 169,043 Protective Solutions 17,505 13,983 35,991 39,262 Restructuring/Asset impairment charges (24,149) (6,615) (59,633) (30,642) Other, net 352 6,096 (802) 4,484 Consolidated $ 106,744 $ 138,548 $ 340,574 $ 385,204

Basis of Interim Presentation_2

Basis of Interim Presentation (Details) $ in Thousands	Oct. 09, 2020USD ($)	Sep. 27, 2020USD ($)facilitynumberOfLocations	Dec. 31, 2019USD ($)
Assets:
Current assets		$ 202,069	$ 0
Right of Use Asset - Operating leases		24,148	0
Liabilities:
Current liabilities		93,849	0
Noncurrent operating lease liabilities		$ 24,136	$ 0
Europe Contracting Package Business | Held-for-sale
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Number of manufacturing facilities | facility		6
Number of locations | numberOfLocations		3
Assets:
Trade accounts receivable, net of allowances		$ 43,411
Inventories		36,278
Other receivables		9,179
Prepaid expenses		2,516
Current assets		91,384
Property, plant and equipment, net		7,766
Goodwill		76,828
Long-term deferred income taxes		1,943
Right of Use Asset - Operating leases		23,337
Other assets		811
Noncurrent assets		110,685
Assets held for sale		202,069
Liabilities:
Payable to suppliers		54,907
Accrued expenses and other		15,351
Notes payable and current portion of long-term debt		259
Taxes on income		1,198
Current liabilities		71,715
Long-term debt		554
Noncurrent operating lease liabilities		18,824
Other long-term liabilities		2,756
Noncurrent liabilities		22,134
Liabilities held for sale		$ 93,849
Europe Contracting Package Business | Held-for-sale | Subsequent Event
Liabilities:
Consideration for disposal of business held for sale	$ 120,000

New Accounting Pronouncements -

New Accounting Pronouncements - Additional Information (Details) - USD ($) $ in Thousands	Jan. 01, 2020	Sep. 27, 2020	Jun. 28, 2020	Mar. 29, 2020	Dec. 31, 2019		Sep. 29, 2019	Jun. 30, 2019	Mar. 31, 2019	Dec. 31, 2018
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Accounting Standards Update [Extensible List]	us-gaap:AccountingStandardsUpdate201613Member
Cumulative-effect adjustment		$ (1,881,333)	$ (1,807,704)	$ (1,755,441)	$ (1,815,705)	[1]	$ (1,854,313)	$ (1,853,620)	$ (1,801,139)	$ (1,772,278)
Deferred income tax liabilities		(94,831)			(76,206)	[1]
Impact of new accounting pronouncements
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Cumulative-effect adjustment					209					6,771
Accounting Standards Update 2016-13 | Impact of new accounting pronouncements
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Allowance for doubtful accounts	$ 279
Deferred income tax liabilities	70
Retained Earnings
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Cumulative-effect adjustment		$ (2,390,272)	$ (2,350,189)	$ (2,338,429)	(2,301,532)		$ (2,300,006)	$ (2,251,279)	$ (2,213,473)	(2,188,115)
Retained Earnings | Impact of new accounting pronouncements
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Cumulative-effect adjustment					$ 209					$ 6,771
Retained Earnings | Accounting Standards Update 2016-13 | Impact of new accounting pronouncements
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Cumulative-effect adjustment	$ 209
[1]	The year-end condensed consolidated balance sheet data was derived from audited financial statements, but does not include all disclosures required by accounting principles generally accepted in the United States of America.

Acquisitions and Dispositions -

Acquisitions and Dispositions - Additional Information (Details)

Aug. 03, 2020USD ($)facility

Jan. 10, 2020USD ($)

Aug. 31, 2020USD ($)

May 31, 2020USD ($)

Apr. 30, 2020USD ($)

Nov. 30, 2019USD ($)

Sep. 27, 2020USD ($)

Sep. 29, 2019USD ($)

Sep. 27, 2020USD ($)

Sep. 29, 2019USD ($)

Dec. 31, 2019USD ($)

Oct. 09, 2020USD ($)

Apr. 12, 2018USD ($)installment_payment

Aug. 30, 2016USD ($)installment_payment

Business Acquisition [Line Items]

Consideration paid, net of cash acquired

$ 49,262,000

$ 111,009,000

Payment of contingent consideration

3,000,000

5,000,000

Acquisition related costs

$ 913,000

$ 3,903,000

2,941,000

$ 5,516,000

Held-for-sale | Europe Contracting Package Business | Subsequent Event

Business Acquisition [Line Items]

Consideration for disposal of business held for sale

$ 120,000,000

Can Packaging

Business Acquisition [Line Items]

Consideration, net of cash acquired

$ 45,473,000

Number of manufacturing facilities | facility

2

Goodwill expected to be deductible for income tax purposes

$ 0

$ 0

Jacksonville

Business Acquisition [Line Items]

Consideration paid, net of cash acquired

$ 3,973,000

Highland

Business Acquisition [Line Items]

Contingent purchase liability

$ 7,500,000

Number of annual installments | installment_payment

2

Payment of contingent consideration

$ 2,500,000

$ 5,000,000

AAR Corporation

Business Acquisition [Line Items]

Contingent purchase liability

$ 1,000,000

Number of annual installments | installment_payment

2

Payment of contingent consideration

$ 500,000

$ 500,000

TEQ

Business Acquisition [Line Items]

Cash proceeds received after post-closing settlement for change in working capital

$ 185,000

Acquisitions and Dispositions_2

Acquisitions and Dispositions - Preliminary Fair Values of Assets Acquired and Liabilities Assumed (Details) - USD ($) $ in Thousands	Sep. 27, 2020	Aug. 31, 2020	Aug. 03, 2020	Jan. 10, 2020	Dec. 31, 2019	[1]
Business Acquisition [Line Items]
Goodwill	$ 1,369,283				$ 1,429,346
Can Packaging
Business Acquisition [Line Items]
Trade accounts receivable			$ 5,256
Inventories			3,225
Property, plant and equipment			10,636
Goodwill			12,359
Other intangible assets		$ 25,750	25,746
Payable to suppliers			(2,811)
Other net tangible assets/(liabilities)			(3,530)
Deferred income taxes, net			(5,408)
Net Assets			$ 45,473
Jacksonville
Business Acquisition [Line Items]
Trade accounts receivable				$ 0
Inventories				150
Property, plant and equipment				2,773
Goodwill				1,050
Other intangible assets				0
Payable to suppliers				0
Other net tangible assets/(liabilities)				0
Deferred income taxes, net				0
Net Assets				$ 3,973
[1]	The year-end condensed consolidated balance sheet data was derived from audited financial statements, but does not include all disclosures required by accounting principles generally accepted in the United States of America.

Acquisitions and Dispositions_3

Acquisitions and Dispositions - Schedule of Measurement Period Adjustments (Details) - USD ($) $ in Thousands	6 Months Ended	9 Months Ended
	Jun. 28, 2020	Sep. 27, 2020
Business Acquisition [Line Items]
Goodwill		$ 3,867
TEQ
Business Acquisition [Line Items]
Trade accounts receivable		(56)
Inventories		(433)
Property, plant and equipment		(2,927)
Goodwill	$ 3,251	3,251
Other intangible assets		800
Payable to suppliers		6
Other net tangible assets/liabilities		(524)
Deferred income taxes, net		(302)
Change in consideration paid		(185)
Corenso
Business Acquisition [Line Items]
Trade accounts receivable		0
Inventories		(536)
Property, plant and equipment		0
Goodwill	$ 616	616
Other intangible assets		0
Payable to suppliers		(80)
Other net tangible assets/liabilities		0
Deferred income taxes, net		0
Change in consideration paid		$ 0

Shareholders' Equity - Earnings

Shareholders' Equity - Earnings Per Share (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	Sep. 10, 2020	Sep. 27, 2020	Sep. 29, 2019	Sep. 27, 2020	Sep. 29, 2019
Numerator:
Net income attributable to Sonoco		$ 83,449	$ 92,064	$ 219,105	$ 246,886
Denominator:
Basic (in shares)		100,974	100,778	100,935	100,727
Dilutive effect of stock-based compensation (in shares)		271	408	220	431
Diluted (in shares)		101,245	101,186	101,155	101,158
Net income attributable to Sonoco per common share:
Basic (in usd per share)		$ 0.83	$ 0.91	$ 2.17	$ 2.45
Diluted (in usd per share)		0.82	0.91	2.17	2.44
Cash dividends (in usd per share)	$ 0.43	$ 0.43	$ 0.43	$ 1.29	$ 1.27

Shareholders' Equity - Antidilu

Shareholders' Equity - Antidilutive Securities (Details) - shares shares in Thousands	3 Months Ended		9 Months Ended
	Sep. 27, 2020	Sep. 29, 2019	Sep. 27, 2020	Sep. 29, 2019
Equity [Abstract]
Anti-dilutive stock appreciation rights (in shares)	752	533	844	458

Shareholders' Equity - Addition

Shareholders' Equity - Additional Information (Details) - USD ($) $ / shares in Units, $ in Thousands	Oct. 19, 2020	Sep. 10, 2020	Jul. 15, 2020	Sep. 27, 2020	Jun. 28, 2020	Mar. 29, 2020	Sep. 29, 2019	Jun. 30, 2019	Mar. 31, 2019	Sep. 27, 2020	Sep. 29, 2019	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016	Feb. 10, 2016
Class of Stock [Line Items]
Number of shares authorized for repurchase (in shares)																5,000,000
Number of shares repurchased (in shares)										0		0	0	0	2,030,000
Number of shares available for repurchase (in shares)				2,970,000						2,970,000
Cost of shares repurchased				$ 3,385	$ 12	$ 3,938	$ 147	$ 1,155	$ 7,395
Dividend declared and payable (in usd per share)			$ 0.43
Dividends paid (in usd per share)		$ 0.43		$ 0.43			$ 0.43			$ 1.29	$ 1.27
Subsequent Event
Class of Stock [Line Items]
Dividend declared and payable (in usd per share)	$ 0.43
Tax Withholding Obligations
Class of Stock [Line Items]
Number of shares repurchased (in shares)										130,000	154,000
Cost of shares repurchased										$ 7,335	$ 8,697

Restructuring and Asset Impai_3

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		9 Months Ended
	Sep. 27, 2020	Sep. 29, 2019	Sep. 27, 2020	Sep. 29, 2019
Restructuring Cost and Reserve [Line Items]
Total Restructuring/Asset Impairment Charges	$ 24,149	$ 6,615	$ 59,633	$ 30,642
Severance and Termination Benefits
Restructuring Cost and Reserve [Line Items]
Total Restructuring/Asset Impairment Charges	4,607	4,922	29,866	16,421
Severance and Termination Benefits | Operating Segments | Consumer Packaging
Restructuring Cost and Reserve [Line Items]
Total Restructuring/Asset Impairment Charges	16,662	6,363	22,274	24,105
Severance and Termination Benefits | Operating Segments | Display and Packaging
Restructuring Cost and Reserve [Line Items]
Total Restructuring/Asset Impairment Charges	1,391	106	4,939	992
Severance and Termination Benefits | Operating Segments | Paper and Industrial Converted Products
Restructuring Cost and Reserve [Line Items]
Total Restructuring/Asset Impairment Charges	6,990	1,066	30,035	3,540
Severance and Termination Benefits | Operating Segments | Protective Solutions
Restructuring Cost and Reserve [Line Items]
Total Restructuring/Asset Impairment Charges	(793)	(930)	375	73
Asset Impairment/ Disposal of Assets
Restructuring Cost and Reserve [Line Items]
Total Restructuring/Asset Impairment Charges	16,605	(948)	25,364	6,336
Other Costs
Restructuring Cost and Reserve [Line Items]
Total Restructuring/Asset Impairment Charges	2,937	2,641	4,403	7,885
Other Costs | Corporate
Restructuring Cost and Reserve [Line Items]
Total Restructuring/Asset Impairment Charges	$ (101)	$ 10	$ 2,010	$ 1,932

Restructuring and Asset Impai_4

Restructuring and Asset Impairment - Restructuring Accrual Activity (Details) $ in Thousands	9 Months Ended
	Sep. 27, 2020USD ($)
Restructuring Reserve [Roll Forward]
Liability at December 31, 2019	$ 11,357
2020 charges	59,633
Cash receipts/(payments)	(27,039)
Asset write downs/disposals	(27,748)
Foreign currency translation	128
Liability at September 27, 2020	16,331
Severance and Termination Benefits
Restructuring Reserve [Roll Forward]
Liability at December 31, 2019	10,765
2020 charges	29,866
Cash receipts/(payments)	(25,749)
Asset write downs/disposals	0
Foreign currency translation	127
Liability at September 27, 2020	15,009
Asset Impairment/ Disposal of Assets
Restructuring Reserve [Roll Forward]
Liability at December 31, 2019	0
2020 charges	25,364
Cash receipts/(payments)	3,527
Asset write downs/disposals	(28,891)
Foreign currency translation
Liability at September 27, 2020	0
Other Costs
Restructuring Reserve [Roll Forward]
Liability at December 31, 2019	592
2020 charges	4,403
Cash receipts/(payments)	(4,817)
Asset write downs/disposals	1,143
Foreign currency translation	1
Liability at September 27, 2020	$ 1,322

Restructuring and Asset Impai_5

Restructuring and Asset Impairment - Additional Information (Details) $ in Thousands	9 Months Ended
	Sep. 27, 2020USD ($)facilityposition	Dec. 31, 2019USD ($)	[1]
Restructuring Cost and Reserve [Line Items]
Asset impairment/disposal of assets	$ 59,633
Net book value of fixed assets sold	1,227,122	$ 1,286,842
Future additional charges expected to be recognized	$ 6,000
Paper and Industrial Converted Products | Cones Operations
Restructuring Cost and Reserve [Line Items]
Number of closed facilities | facility	3
Consumer Packaging | Graphic Design Operations
Restructuring Cost and Reserve [Line Items]
Number of closed facilities | facility	2
United States | Consumer Packaging | Graphic Design Operations
Restructuring Cost and Reserve [Line Items]
Number of closed facilities | facility	1
United Kingdom | Consumer Packaging | Graphic Design Operations
Restructuring Cost and Reserve [Line Items]
Number of closed facilities | facility	1
Organizational effectiveness efforts
Restructuring Cost and Reserve [Line Items]
Number of eliminated positions (position) | position	250
Facility closure | United States
Restructuring Cost and Reserve [Line Items]
Asset impairment/disposal of assets	$ 2,481
Facility closure | North America
Restructuring Cost and Reserve [Line Items]
Asset impairment/disposal of assets	14,892
Facility closure | Canada
Restructuring Cost and Reserve [Line Items]
Asset impairment/disposal of assets	7,927
Facility closure | North Carolina
Restructuring Cost and Reserve [Line Items]
Proceeds from sale of building	3,527
Net book value of fixed assets sold	$ 2,451
[1]	The year-end condensed consolidated balance sheet data was derived from audited financial statements, but does not include all disclosures required by accounting principles generally accepted in the United States of America.

Accumulated Other Comprehensi_3

Accumulated Other Comprehensive Loss - Components of Accumulated Other Comprehensive Loss (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 27, 2020	Sep. 29, 2019	Sep. 27, 2020		Sep. 29, 2019
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Beginning Balance	$ 1,807,704	$ 1,853,620	$ 1,815,705	[1]	$ 1,772,278
Other comprehensive (loss)/income	32,212	(51,371)	(22,665)		(34,252)
Ending Balance	1,881,333	1,854,313	1,881,333		1,854,313
Foreign Currency Items
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Beginning Balance			(241,994)		(251,102)
Other comprehensive (loss)/income before reclassifications			(35,447)		(26,863)
Amounts reclassified from accumulated other comprehensive loss net of tax			0
Other comprehensive (loss)/income			(35,447)		(26,863)
Ending Balance	(277,441)	(277,965)	(277,441)		(277,965)
Foreign Currency Items | Fixed Assets
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Amounts reclassified from accumulated other comprehensive loss net of tax					0
Foreign Currency Items | Net Income
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Amounts reclassified from accumulated other comprehensive loss net of tax					0
Defined Benefit Pension Items
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Beginning Balance			(574,413)		(487,380)
Other comprehensive (loss)/income before reclassifications			(885)		(27,781)
Amounts reclassified from accumulated other comprehensive loss net of tax			16,361
Other comprehensive (loss)/income			15,476		(7,887)
Ending Balance	(558,937)	(495,267)	(558,937)		(495,267)
Defined Benefit Pension Items | Fixed Assets
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Amounts reclassified from accumulated other comprehensive loss net of tax					0
Defined Benefit Pension Items | Net Income
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Amounts reclassified from accumulated other comprehensive loss net of tax					19,894
Cash Flow Hedges
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Beginning Balance			(396)		(2,431)
Other comprehensive (loss)/income before reclassifications			(3,362)		1,434
Amounts reclassified from accumulated other comprehensive loss net of tax			2,922
Other comprehensive (loss)/income			(440)		1,290
Ending Balance	(836)	(1,141)	(836)		(1,141)
Cash Flow Hedges | Fixed Assets
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Amounts reclassified from accumulated other comprehensive loss net of tax					(110)
Cash Flow Hedges | Net Income
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Amounts reclassified from accumulated other comprehensive loss net of tax					(34)
Accumulated Other Comprehensive Loss
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Beginning Balance	(869,453)	(723,846)	(816,803)		(740,913)
Other comprehensive (loss)/income before reclassifications			(39,694)		(53,210)
Amounts reclassified from accumulated other comprehensive loss net of tax			19,283
Other comprehensive (loss)/income			(20,411)		(33,460)
Ending Balance	$ (837,214)	$ (774,373)	$ (837,214)		(774,373)
Accumulated Other Comprehensive Loss | Fixed Assets
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Amounts reclassified from accumulated other comprehensive loss net of tax					(110)
Accumulated Other Comprehensive Loss | Net Income
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Amounts reclassified from accumulated other comprehensive loss net of tax					$ 19,860
[1]	The year-end condensed consolidated balance sheet data was derived from audited financial statements, but does not include all disclosures required by accounting principles generally accepted in the United States of America.

Accumulated Other Comprehensi_4

Accumulated Other Comprehensive Loss - Effects on Net Income of Significant Amounts Reclassified from Accumulated Other Comprehensive Loss (Details) - USD ($) $ in Thousands	3 Months Ended						9 Months Ended
	Sep. 27, 2020	Jun. 28, 2020	Mar. 29, 2020	Sep. 29, 2019	Jun. 30, 2019	Mar. 31, 2019	Sep. 27, 2020	Sep. 29, 2019
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Net sales	$ 1,312,314			$ 1,353,931			$ 3,861,095	$ 4,065,357
Cost of sales	(1,055,304)			(1,088,446)			(3,089,512)	(3,254,415)
Income before income taxes	80,710			116,582			264,631	320,310
Provision for income taxes	649			(26,098)			(49,337)	(77,213)
Net income	83,298	$ 54,990	$ 80,236	92,283	$ 81,286	$ 73,768	218,524	247,337
Reclassification out of Accumulated Other Comprehensive Income
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Net sales	(1,723)			139			(6,245)	988
Cost of sales	75			(337)			2,398	(887)
Net income	(6,548)			(5,201)			(19,283)	(19,860)
Reclassification out of Accumulated Other Comprehensive Income | Cash Flow Hedges
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Income before income taxes	(1,648)			(198)			(3,847)	101
Provision for income taxes	403			(11)			925	(67)
Net income	(1,245)			(209)			(2,922)	34
Reclassification out of Accumulated Other Comprehensive Income | Defined Benefit Pension Items
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Income before income taxes	(7,103)			(6,701)			(21,877)	(26,703)
Provision for income taxes	1,800			1,709			5,516	6,809
Net income	(5,303)			(4,992)			(16,361)	(19,894)
Reclassification out of Accumulated Other Comprehensive Income | Effect of curtailment loss
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Non-operating pension costs	0			0			(31)	0
Reclassification out of Accumulated Other Comprehensive Income | Effect of settlement loss
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Non-operating pension costs	0			(796)			(661)	(2,343)
Reclassification out of Accumulated Other Comprehensive Income | Amortization of defined benefit pension items
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Non-operating pension costs	(7,103)			(5,905)			(21,185)	(24,360)
Reclassification out of Accumulated Other Comprehensive Income | Foreign exchange contracts | Cash Flow Hedges
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Net sales	(1,723)			139			(6,245)	988
Cost of sales	867			(348)			3,744	(1,014)
Reclassification out of Accumulated Other Comprehensive Income | Commodity contracts | Cash Flow Hedges
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Net sales	0			0			0	0
Cost of sales	$ (792)			$ 11			$ (1,346)	$ 127

Accumulated Other Comprehensi_5

Accumulated Other Comprehensive Loss - Before and After Tax Amounts for Comprehensive Income (Loss) Components (Details) - USD ($) $ in Thousands	3 Months Ended						9 Months Ended
	Sep. 27, 2020	Jun. 28, 2020	Mar. 29, 2020	Sep. 29, 2019	Jun. 30, 2019	Mar. 31, 2019	Sep. 27, 2020	Sep. 29, 2019
Accumulated Other Comprehensive Income (Loss) [Line Items]
Other comprehensive income/(loss)	$ 32,212	$ 39,110	$ (93,987)	$ (51,371)	$ 11,071	$ 6,048
Foreign Currency Items
Accumulated Other Comprehensive Income (Loss) [Line Items]
Other comprehensive income/(loss) before tax	24,674			(33,584)			$ (27,866)	$ (26,863)
Other comprehensive income/(loss), tax	0			0			(7,581)	0
Other comprehensive income/(loss)	24,674			(33,584)			(35,447)	(26,863)
Defined benefit pension items
Accumulated Other Comprehensive Income (Loss) [Line Items]
Other comprehensive (loss)/income before reclassifications before tax	(31)			(29,190)			(1,177)	(36,828)
Other comprehensive (loss)/income before reclassifications, tax	8			7,348			292	9,047
Other comprehensive (loss)/income before reclassifications, net of tax	(23)			(21,842)			(885)	(27,781)
Amounts reclassified from accumulated other comprehensive income/(loss) before tax							21,877	26,703
Amounts reclassified from accumulated other comprehensive income/(loss), tax							(5,516)	(6,809)
Amounts reclassified from accumulated other comprehensive income/(loss) net of tax							16,361	19,894
Other comprehensive income/(loss) before tax	7,072			(22,489)			20,700	(10,125)
Other comprehensive income/(loss), tax	(1,792)			5,639			(5,224)	2,238
Other comprehensive income/(loss)	5,280			(16,850)			15,476	(7,887)
Defined benefit pension items | Net Income
Accumulated Other Comprehensive Income (Loss) [Line Items]
Amounts reclassified from accumulated other comprehensive income/(loss) before tax	7,103			6,701
Amounts reclassified from accumulated other comprehensive income/(loss), tax	(1,800)			(1,709)
Amounts reclassified from accumulated other comprehensive income/(loss) net of tax	5,303			4,992
Cash Flow Hedges
Accumulated Other Comprehensive Income (Loss) [Line Items]
Other comprehensive (loss)/income before reclassifications before tax	1,376			(279)			(4,345)	1,915
Other comprehensive (loss)/income before reclassifications, tax	(336)			(14)			983	(481)
Other comprehensive (loss)/income before reclassifications, net of tax	1,040			(293)			(3,362)	1,434
Other comprehensive income/(loss) before tax	3,024			(90)			(498)	1,704
Other comprehensive income/(loss), tax	(739)			(3)			58	(414)
Other comprehensive income/(loss)	2,285			(93)			(440)	1,290
Cash Flow Hedges | Fixed Assets
Accumulated Other Comprehensive Income (Loss) [Line Items]
Amounts reclassified from accumulated other comprehensive income/(loss) before tax	0			(9)			0	(110)
Amounts reclassified from accumulated other comprehensive income/(loss), tax	0			0			0	0
Amounts reclassified from accumulated other comprehensive income/(loss) net of tax	0			(9)			0	(110)
Cash Flow Hedges | Net Income
Accumulated Other Comprehensive Income (Loss) [Line Items]
Amounts reclassified from accumulated other comprehensive income/(loss) before tax	1,648			198			3,847	(101)
Amounts reclassified from accumulated other comprehensive income/(loss), tax	(403)			11			(925)	67
Amounts reclassified from accumulated other comprehensive income/(loss) net of tax	1,245			209			2,922	(34)
Accumulated Other Comprehensive Loss
Accumulated Other Comprehensive Income (Loss) [Line Items]
Other comprehensive income/(loss) before tax	34,770			(56,163)			(7,664)	(35,284)
Other comprehensive income/(loss), tax	(2,531)			5,636			(12,747)	1,824
Other comprehensive income/(loss)	$ 32,239	$ 39,700	$ (92,350)	$ (50,527)	$ 10,899	$ 6,168	$ (20,411)	$ (33,460)

Goodwill and Other Intangible_3

Goodwill and Other Intangible Assets - Changes in Goodwill by Segment (Details) $ in Thousands	9 Months Ended
	Sep. 27, 2020USD ($)
Goodwill [Roll Forward]
Goodwill at December 31, 2019	$ 1,429,346	[1]
2020 Acquisitions	13,409
Reclassified to assets held for sale	(76,828)
Foreign currency translation	(511)
Measurement period adjustments	3,867
Goodwill at September 27, 2020	1,369,283
Consumer Packaging
Goodwill [Roll Forward]
Goodwill at December 31, 2019	691,243
2020 Acquisitions	12,359
Reclassified to assets held for sale	0
Foreign currency translation	(685)
Measurement period adjustments	3,251
Goodwill at September 27, 2020	706,168
Display and Packaging
Goodwill [Roll Forward]
Goodwill at December 31, 2019	203,414
2020 Acquisitions	0
Reclassified to assets held for sale	(76,828)
Foreign currency translation	0
Measurement period adjustments	0
Goodwill at September 27, 2020	126,586
Paper and Industrial Converted Products
Goodwill [Roll Forward]
Goodwill at December 31, 2019	303,041
2020 Acquisitions	1,050
Reclassified to assets held for sale	0
Foreign currency translation	442
Measurement period adjustments	616
Goodwill at September 27, 2020	305,149
Protective Solutions
Goodwill [Roll Forward]
Goodwill at December 31, 2019	231,648
2020 Acquisitions	0
Reclassified to assets held for sale	0
Foreign currency translation	(268)
Measurement period adjustments	0
Goodwill at September 27, 2020	$ 231,380
[1]	The year-end condensed consolidated balance sheet data was derived from audited financial statements, but does not include all disclosures required by accounting principles generally accepted in the United States of America.

Goodwill and Other Intangible_4

Goodwill and Other Intangible Assets - Additional Information (Details) - USD ($)	3 Months Ended			6 Months Ended	9 Months Ended
	Sep. 27, 2020	Mar. 29, 2020	Sep. 29, 2019	Jun. 28, 2020	Sep. 27, 2020	Sep. 29, 2019	Aug. 31, 2020	Aug. 03, 2020	Jan. 10, 2020	Dec. 31, 2019	[1]
Goodwill [Line Items]
Goodwill recorded upon completion of acquisition					$ 13,409,000
Measurement period adjustments					3,867,000
Goodwill, impairment loss	$ 0
Goodwill	1,369,283,000				1,369,283,000					$ 1,429,346,000
Indefinite-lived intangible assets	0				0
Aggregate amortization expense	12,993,000		$ 12,145,000		39,624,000	$ 38,035,000
Amortization expense on other intangible assets in 2020	52,500,000				52,500,000
Amortization expense on other intangible assets in 2021	51,900,000				51,900,000
Amortization expense on other intangible assets in 2022	49,200,000				49,200,000
Amortization expense on other intangible assets in 2023	44,500,000				44,500,000
Amortization expense on other intangible assets in 2024	35,900,000				$ 35,900,000
Proprietary technology
Goodwill [Line Items]
Useful lives of intangible asset		14 years
Other | Minimum
Goodwill [Line Items]
Useful lives of intangible asset					3 years
Other | Maximum
Goodwill [Line Items]
Useful lives of intangible asset					40 years
Display and Packaging Reporting Unit
Goodwill [Line Items]
Goodwill	$ 126,586,000				$ 126,586,000
Excess of fair value of reporting unit over carrying value (percent)	5.20%				5.20%
Projected decrease in operating profit for estimated fair value to fall below carrying value (percent)	2.10%				2.10%
Display and Packaging Reporting Unit | Discount Rate
Goodwill [Line Items]
Discount rate (percent)	9.10%				9.10%
Change necessary in order for estimated fair value to fall below carrying value (percent)	10.60%				10.60%
Conitex Reporting Unit
Goodwill [Line Items]
Goodwill	$ 32,109,000				$ 32,109,000
Excess of fair value of reporting unit over carrying value (percent)	6.90%				6.90%
Projected decrease in operating profit for estimated fair value to fall below carrying value (percent)	6.20%				6.20%
Conitex Reporting Unit | Discount Rate
Goodwill [Line Items]
Discount rate (percent)	10.80%				10.80%
Change necessary in order for estimated fair value to fall below carrying value (percent)	12.20%				12.20%
Can Packaging
Goodwill [Line Items]
Goodwill								$ 12,359,000
Intangible assets							$ 25,750,000	$ 25,746,000
Jacksonville
Goodwill [Line Items]
Goodwill recorded upon completion of acquisition				$ 1,050,000
Goodwill									$ 1,050,000
Intangible assets									$ 0
Corenso
Goodwill [Line Items]
Measurement period adjustments				616,000	$ 616,000
Increase in amortizable intangibles					0
TEQ
Goodwill [Line Items]
Measurement period adjustments				$ 3,251,000	3,251,000
Increase in amortizable intangibles					800,000
TEQ and Corenso | Customer lists
Goodwill [Line Items]
Increase in amortizable intangibles					$ 800,000
[1]	The year-end condensed consolidated balance sheet data was derived from audited financial statements, but does not include all disclosures required by accounting principles generally accepted in the United States of America.

Goodwill and Other Intangible_5

Goodwill and Other Intangible Assets - Summary of Other Intangible Assets (Details) - USD ($) $ in Thousands	Sep. 27, 2020	Dec. 31, 2019
Other Intangible Assets, gross:
Other Intangible Assets, gross	$ 744,301	$ 717,381
Total Accumulated Amortization	(369,927)	(329,089)
Other Intangible Assets, net	374,374	388,292	[1]
Patents
Other Intangible Assets, gross:
Other Intangible Assets, gross	32,764	26,096
Total Accumulated Amortization	(13,831)	(11,669)
Customer lists
Other Intangible Assets, gross:
Other Intangible Assets, gross	651,828	632,036
Total Accumulated Amortization	(323,052)	(287,831)
Trade names
Other Intangible Assets, gross:
Other Intangible Assets, gross	32,409	32,427
Total Accumulated Amortization	(11,677)	(9,985)
Proprietary technology
Other Intangible Assets, gross:
Other Intangible Assets, gross	24,492	24,525
Total Accumulated Amortization	(19,524)	(17,910)
Other
Other Intangible Assets, gross:
Other Intangible Assets, gross	2,808	2,297
Total Accumulated Amortization	$ (1,843)	$ (1,694)
[1]	The year-end condensed consolidated balance sheet data was derived from audited financial statements, but does not include all disclosures required by accounting principles generally accepted in the United States of America.

Debt - Schedule of Debt (Detail

Debt - Schedule of Debt (Details) - USD ($) $ in Thousands	Sep. 27, 2020	Dec. 31, 2019
Line of Credit Facility [Line Items]
Finance lease obligations	$ 44,046	$ 33,077
Total debt	2,135,997	1,681,369
Less current portion and short-term notes	508,960	488,234
Long-term debt	1,627,037	1,193,135
Commercial paper
Line of Credit Facility [Line Items]
Debt	0	250,000
U.S. Bank term loan due March 2021
Line of Credit Facility [Line Items]
Debt	100,000	0
Wells Fargo term loan due May 2021
Line of Credit Facility [Line Items]
Debt	200,000	200,000
Syndicated bank term loan due July 2022
Line of Credit Facility [Line Items]
Debt	$ 140,022	146,569
1.0% Euro loan due May 2021
Line of Credit Facility [Line Items]
Interest rate (percent)	1.00%
Debt	$ 174,416	167,272
9.2% debentures due August 2021
Line of Credit Facility [Line Items]
Interest rate (percent)	9.20%
Debt	$ 4,320	4,318
4.375% debentures due November 2021
Line of Credit Facility [Line Items]
Interest rate (percent)	4.375%
Debt	$ 249,660	249,428
3.125% debentures due May 2030
Line of Credit Facility [Line Items]
Interest rate (percent)	3.125%
Debt	$ 594,539	0
5.75% debentures due November 2040
Line of Credit Facility [Line Items]
Interest rate (percent)	5.75%
Debt	$ 599,270	599,244
Other foreign denominated debt
Line of Credit Facility [Line Items]
Debt	15,277	16,734
Other notes
Line of Credit Facility [Line Items]
Debt	$ 14,447	$ 14,727

Debt - Narrative (Details)

Debt - Narrative (Details)	Oct. 22, 2020USD ($)	Sep. 27, 2020USD ($)	Jul. 20, 2020USD ($)	May 05, 2020USD ($)	Apr. 22, 2020USD ($)	Apr. 06, 2020USD ($)	Apr. 01, 2020USD ($)bank	Mar. 18, 2020USD ($)	May 31, 2020USD ($)	Dec. 31, 2019USD ($)	[1]
Line of Credit Facility [Line Items]
Expected debt maturities through December 2021		$ 760,000,000
Cash and cash equivalents		782,679,000								$ 145,283,000
Revolving Credit Facility
Line of Credit Facility [Line Items]
Cash and cash equivalents		782,679,000
Committed availability under credit facilities		$ 500,000,000
Revolving Credit Facility | Wells Fargo Bank, NA
Line of Credit Facility [Line Items]
Proceeds from lines of credit							$ 250,000,000
Repayments of credit facility				$ 250,000,000
Maximum borrowing capacity							$ 500,000,000
Number of banks in syndicate | bank							8
Wells Fargo term loan due March 2021 | Term loan | Wells Fargo Bank, NA
Line of Credit Facility [Line Items]
Debt term								364 days
Repayments of term loan			$ 150,000,000
Debt principal								$ 150,000,000	$ 200,000,000
Debt instrument term extension period									364 days
Wells Fargo term loan due March 2021 | Term loan | Wells Fargo Bank, NA | Subsequent Event
Line of Credit Facility [Line Items]
Repayments of term loan	$ 200,000,000
Wells Fargo term loan due March 2021 | Term loan | Wells Fargo Bank, NA | LIBOR
Line of Credit Facility [Line Items]
Basis points (percent)		1.125%
U.S. Bank term loan due March 2021 | Term loan | U.S. Bank, NA
Line of Credit Facility [Line Items]
Debt term						364 days
Debt principal						$ 100,000,000
Repayments of commercial paper							$ 85,000,000
U.S. Bank term loan due March 2021 | Term loan | U.S. Bank, NA | LIBOR
Line of Credit Facility [Line Items]
Basis points (percent)		1.25%
3.125% debentures due May 2030
Line of Credit Facility [Line Items]
Interest rate (percent)		3.125%
3.125% debentures due May 2030 | Notes
Line of Credit Facility [Line Items]
Debt principal					$ 600,000,000
Interest rate (percent)					3.125%
Proceeds from debentures issued					$ 594,200,000
[1]	The year-end condensed consolidated balance sheet data was derived from audited financial statements, but does not include all disclosures required by accounting principles generally accepted in the United States of America.

Financial Instruments and Der_3

Financial Instruments and Derivatives - Carrying Amount and Fair Values of Financial Instruments (Details) - USD ($) $ in Thousands	Sep. 27, 2020	Dec. 31, 2019
Carrying Amount
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Long-term debt, net of current portion, fair value	$ 1,627,037	$ 1,193,135
Fair value
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Long-term debt, net of current portion, fair value	$ 1,880,544	$ 1,351,397

Financial Instruments and Der_4

Financial Instruments and Derivatives - Additional Information (Details) gal in Millions, MMBTU in Millions	1 Months Ended	9 Months Ended
	Mar. 31, 2020USD ($)	Sep. 27, 2020USD ($)MMBTUTgal	Sep. 29, 2019USD ($)	Jan. 31, 2020USD ($)	Dec. 31, 2019USD ($)
Derivative [Line Items]
Fair value of commodity cash flow hedges, gain (loss)		$ 355,000			$ (1,625,000)
Commodity gain (loss) expected to be reclassified to the income statement during the next 12 months		183,000
Fair value of foreign currency cash flow hedges, gain (loss)		(1,372,000)			1,058,000
Foreign currency gain (loss) expected to be reclassified to the income statement during the next 12 months		(942,000)
Proceeds from cross-currency swap		14,480,000	$ 0
Total fair value of other derivatives not designated as hedging instruments		$ (102,000)			$ 54,000
Natural Gas Swaps
Derivative [Line Items]
Approximate amount of commodity covered by swap contracts outstanding (in MMBTUs) | MMBTU		1.3
Anticipated usage percentage covered by a swap contract for the current fiscal year (percent)		79.00%
Aluminum Swaps
Derivative [Line Items]
Anticipated usage percentage covered by a swap contract for the current fiscal year (percent)		31.00%
Anticipated usage percentage covered by a swap contract for the next fiscal year (percent)		45.00%
Approximate amount of commodity covered by swap contracts outstanding (in tons) | T		3,597
Cross-currency swap
Derivative [Line Items]
Notional amount				$ 250,000,000
Proceeds from cross-currency swap	$ 14,480,000
Tax provision on foreign currency translation gain	$ 7,581,000
Cross-currency swap | U.S. dollars
Derivative [Line Items]
Interest rate (percent)				5.75%
Cross-currency swap | Euros
Derivative [Line Items]
Interest rate (percent)				3.856%
Diesel Swaps
Derivative [Line Items]
Gallons of diesel fuel covered under contract (gallons) | gal		2.3

Financial Instruments and Der_5

Financial Instruments and Derivatives - Net Positions of Foreign Contracts (Details) - Sep. 27, 2020 - Cash Flow Hedging ₽ in Thousands, ₺ in Thousands, € in Thousands, £ in Thousands, zł in Thousands, Kč in Thousands, $ in Thousands, $ in Thousands, $ in Thousands, $ in Thousands, $ in Thousands	COP ($)	MXN ($)	PLN (zł)	CZK (Kč)	CAD ($)	GBP (£)	TRY (₺)	EUR (€)	NZD ($)	AUD ($)	RUB (₽)
purchase
Derivative [Line Items]
Net position	$ 3,927,650	$ 218,910	zł 24,240	Kč 10,162	$ 8,592	£ 1,891	₺ 907	€ 199
sell
Derivative [Line Items]
Net position									$ 621	$ 1,312	₽ 51,701

Financial Instruments and Der_6

Financial Instruments and Derivatives - Net Positions of Other Derivatives Contract (Details) - Sep. 27, 2020 - Derivatives Not Designated as Hedging Instruments Rp in Thousands, $ in Thousands, $ in Thousands, $ in Thousands	COP ($)	MXN ($)	CAD ($)	IDR (Rp)
purchase
Derivative [Line Items]
Net position	$ 8,787,528	$ 483,909	$ 6,346
sell
Derivative [Line Items]
Net position				Rp 17,858,489

Financial Instruments and Der_7

Financial Instruments and Derivatives - Location and Fair Values of Derivative Instruments (Details) - USD ($) $ in Thousands	Sep. 27, 2020	Dec. 31, 2019
Derivatives Designated as Hedging Instruments | Commodity contracts | Other assets
Derivatives, Fair Value [Line Items]
Derivative asset	$ 173	$ 0
Derivatives Designated as Hedging Instruments | Commodity contracts | Accrued expenses and other
Derivatives, Fair Value [Line Items]
Derivative liability	(74)	(1,625)
Derivatives Designated as Hedging Instruments | Commodity contracts | Prepaid expenses
Derivatives, Fair Value [Line Items]
Derivative asset	256	0
Derivatives Designated as Hedging Instruments | Foreign exchange contracts | Accrued expenses and other
Derivatives, Fair Value [Line Items]
Derivative liability	(1,166)	(178)
Derivatives Designated as Hedging Instruments | Foreign exchange contracts | Prepaid expenses
Derivatives, Fair Value [Line Items]
Derivative asset	223	1,236
Derivatives Designated as Hedging Instruments | Foreign exchange contracts | Other liabilities
Derivatives, Fair Value [Line Items]
Derivative liability	(430)	0
Derivatives Not Designated as Hedging Instruments | Commodity contracts | Prepaid expenses
Derivatives, Fair Value [Line Items]
Derivative asset	10	0
Derivatives Not Designated as Hedging Instruments | Foreign exchange contracts | Accrued expenses and other
Derivatives, Fair Value [Line Items]
Derivative liability	(112)	(34)
Derivatives Not Designated as Hedging Instruments | Foreign exchange contracts | Prepaid expenses
Derivatives, Fair Value [Line Items]
Derivative asset	$ 0	$ 88

Financial Instruments and Der_8

Financial Instruments and Derivatives - Effect of Derivative Instruments on Financial Performance (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 27, 2020	Sep. 29, 2019	Sep. 27, 2020	Sep. 29, 2019
Foreign exchange contracts
Derivative Instruments, Gain (Loss) [Line Items]
Amount of Gain or (Loss) Recognized in OCI on Derivatives	$ 90	$ (957)	$ (4,985)	$ 1,901
Foreign exchange contracts | Net sales
Derivative Instruments, Gain (Loss) [Line Items]
Amount of Gain or (Loss) Reclassified from Accumulated OCI Into Income	(1,723)	139	(6,245)	988
Foreign exchange contracts | Cost of sales
Derivative Instruments, Gain (Loss) [Line Items]
Amount of Gain or (Loss) Reclassified from Accumulated OCI Into Income	867	(348)	3,744	(1,014)
Foreign exchange contracts | Selling, general and administrative | Not Designated as Hedging Instrument
Derivative Instruments, Gain (Loss) [Line Items]
Gain or (Loss) Recognized	486	161	(3,565)	(411)
Commodity contracts
Derivative Instruments, Gain (Loss) [Line Items]
Amount of Gain or (Loss) Recognized in OCI on Derivatives	1,286	678	640	14
Commodity contracts | Cost of sales
Derivative Instruments, Gain (Loss) [Line Items]
Amount of Gain or (Loss) Reclassified from Accumulated OCI Into Income	(792)	11	(1,346)	127
Commodity contracts | Cost of sales | Not Designated as Hedging Instrument
Derivative Instruments, Gain (Loss) [Line Items]
Gain or (Loss) Recognized	$ (436)	$ 0	$ (252)	$ 0

Financial Instruments and Der_9

Financial Instruments and Derivatives - Reclassification of Gains and Losses (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 27, 2020	Sep. 29, 2019	Sep. 27, 2020	Sep. 29, 2019
Reclassification Adjustment out of Accumulated Other Comprehensive Income on Derivatives [Line Items]
Revenue	$ 1,312,314	$ 1,353,931	$ 3,861,095	$ 4,065,357
Cost of sales	(1,055,304)	(1,088,446)	(3,089,512)	(3,254,415)
Reclassification out of Accumulated Other Comprehensive Income
Reclassification Adjustment out of Accumulated Other Comprehensive Income on Derivatives [Line Items]
Revenue	(1,723)	139	(6,245)	988
Cost of sales	75	(337)	2,398	(887)
Cash Flow Hedges | Reclassification out of Accumulated Other Comprehensive Income | Foreign exchange contracts
Reclassification Adjustment out of Accumulated Other Comprehensive Income on Derivatives [Line Items]
Revenue	(1,723)	139	(6,245)	988
Cost of sales	867	(348)	3,744	(1,014)
Cash Flow Hedges | Reclassification out of Accumulated Other Comprehensive Income | Commodity contracts
Reclassification Adjustment out of Accumulated Other Comprehensive Income on Derivatives [Line Items]
Revenue	0	0	0	0
Cost of sales	$ (792)	$ 11	$ (1,346)	$ 127

Fair Value Measurements - Asset

Fair Value Measurements - Assets and Liabilities Measured on Recurring Basis (Details) - Recurring basis - USD ($)	Sep. 27, 2020	Dec. 31, 2019
Derivatives Designated as Hedging Instruments | Commodity contracts
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivatives	$ 355,000	$ (1,625,000)
Derivatives Designated as Hedging Instruments | Foreign exchange contracts
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivatives	(1,373,000)	1,058,000
Derivatives Not Designated as Hedging Instruments | Commodity contracts
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivatives	10,000
Derivatives Not Designated as Hedging Instruments | Foreign exchange contracts
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivatives	(112,000)	54,000
Assets measured at NAV | Derivatives Designated as Hedging Instruments | Commodity contracts
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivatives	0	0
Assets measured at NAV | Derivatives Designated as Hedging Instruments | Foreign exchange contracts
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivatives	0	0
Assets measured at NAV | Derivatives Not Designated as Hedging Instruments | Commodity contracts
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivatives	0
Assets measured at NAV | Derivatives Not Designated as Hedging Instruments | Foreign exchange contracts
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivatives	0	0
Level 1 | Derivatives Designated as Hedging Instruments | Commodity contracts
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivatives	0	0
Level 1 | Derivatives Designated as Hedging Instruments | Foreign exchange contracts
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivatives	0	0
Level 1 | Derivatives Not Designated as Hedging Instruments | Commodity contracts
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivatives	0
Level 1 | Derivatives Not Designated as Hedging Instruments | Foreign exchange contracts
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivatives	0	0
Level 2 | Derivatives Designated as Hedging Instruments | Commodity contracts
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivatives	355,000	(1,625,000)
Level 2 | Derivatives Designated as Hedging Instruments | Foreign exchange contracts
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivatives	(1,373,000)	1,058,000
Level 2 | Derivatives Not Designated as Hedging Instruments | Commodity contracts
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivatives	10,000
Level 2 | Derivatives Not Designated as Hedging Instruments | Foreign exchange contracts
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivatives	(112,000)	54,000
Level 3
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivatives	0
Level 3 | Derivatives Designated as Hedging Instruments | Commodity contracts
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivatives	0	0
Level 3 | Derivatives Designated as Hedging Instruments | Foreign exchange contracts
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivatives	0	0
Level 3 | Derivatives Not Designated as Hedging Instruments | Commodity contracts
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivatives	0
Level 3 | Derivatives Not Designated as Hedging Instruments | Foreign exchange contracts
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivatives	$ 0	$ 0

Employee Benefit Plans - Additi

Employee Benefit Plans - Additional Information (Details) - USD ($)	1 Months Ended	3 Months Ended		9 Months Ended
	May 31, 2019	Sep. 27, 2020	Sep. 29, 2019	Sep. 27, 2020	Sep. 29, 2019
Defined Benefit Plan Disclosure [Line Items]
Contributions				$ 12,292,000	$ 210,962,000
Expected contributions for remainder of fiscal year		$ 4,700,000		4,700,000
Settlement losses recognized				661,000	2,343,000
Curtailment charges				31,000
Pension Plan
Defined Benefit Plan Disclosure [Line Items]
Settlement losses recognized		0	$ 796,000	661,000	2,343,000
Curtailment charges		0	0	31,000	0
Pension Plan | Sonoco Retirement Contribution
Defined Benefit Plan Disclosure [Line Items]
Contributions				22,503,000	14,573,000
Expected contributions for remainder of fiscal year		0		0
Recognized expense related to the plan		5,589,000	$ 5,912,000	17,283,000	$ 18,009,000
Pension Plan | Sonoco Pension Plan for Inactive Participants
Defined Benefit Plan Disclosure [Line Items]
Estimated reduction of tax payments		38,000,000		38,000,000
Additional contributions anticipated to be made next year		150,000,000		150,000,000
Non-cash settlement charges expected to be incurred next year		$ 590,000,000		$ 590,000,000
Pension Plan | United States
Defined Benefit Plan Disclosure [Line Items]
Contributions	$ 200,000,000
Pension Plan | United States | Sonoco Retirement Contribution
Defined Benefit Plan Disclosure [Line Items]
Employer matching contribution, percent of employees' gross pay (percent)				4.00%
Employer matching contribution, percent of employees' gross pay in excess of social security (percent)				4.00%

Employee Benefit Plans - Compon

Employee Benefit Plans - Components of Net Periodic Benefit Cost (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 27, 2020	Sep. 29, 2019	Sep. 27, 2020	Sep. 29, 2019
Defined Benefit Plan Disclosure [Line Items]
Effect of curtailment loss			$ 31
Effect of settlement loss			661	$ 2,343
Retirement Plans
Defined Benefit Plan Disclosure [Line Items]
Service cost	$ 881	$ 1,006	2,966	2,909
Interest cost	12,785	13,686	38,015	43,729
Expected return on plan assets	(12,427)	(13,114)	(37,234)	(51,443)
Amortization of prior service cost	245	241	742	671
Amortization of net actuarial loss	7,136	5,993	21,270	24,673
Effect of curtailment loss	0	0	31	0
Effect of settlement loss	0	796	661	2,343
Net periodic benefit cost (income)	8,620	8,608	26,451	22,882
Retiree Health and Life Insurance Plans
Defined Benefit Plan Disclosure [Line Items]
Service cost	89	77	265	229
Interest cost	84	116	249	347
Expected return on plan assets	(92)	(179)	(275)	(535)
Amortization of prior service cost	(70)	(124)	(207)	(371)
Amortization of net actuarial loss	(208)	(205)	(620)	(613)
Net periodic benefit cost (income)	$ (197)	$ (315)	$ (588)	$ (943)

Income Taxes - Additional Infor

Income Taxes - Additional Information (Details) - USD ($) $ in Thousands	3 Months Ended			9 Months Ended
	Sep. 27, 2020	Jun. 28, 2020	Sep. 29, 2019	Sep. 27, 2020	Sep. 29, 2019
Income Tax Contingency [Line Items]
Effective tax rate	(0.80%)		22.40%	18.60%	24.10%
Write-down of deferred tax liabilities				$ 20,355
Increase of uncertain tax benefits				900
Possible decrease in reserve for unrecognized tax benefits	$ 6,000			$ 6,000
Internal Revenue Service (IRS)
Income Tax Contingency [Line Items]
Tax examination, possible loss		$ 6,000

Leases - Additional Information

Leases - Additional Information (Details)	9 Months Ended
	Sep. 27, 2020
Lessee, Lease, Description [Line Items]
Lease term	10 years
Minimum
Lessee, Lease, Description [Line Items]
Lease renewal terms	1 year
Maximum
Lessee, Lease, Description [Line Items]
Lease renewal terms	50 years

Leases - Balance Sheet Location

Leases - Balance Sheet Location and Values of Lease Assets and Lease Liabilities (Details) - USD ($) $ in Thousands	Sep. 27, 2020	Dec. 31, 2019
Leases [Abstract]
Operating lease assets	$ 306,077	$ 298,393	[1]
Finance lease assets	45,931	34,858
Lease assets held for sale	24,148	0
Total lease assets	376,156	333,251
Current operating lease liabilities	50,130	54,048
Current finance lease liabilities	4,196	10,803
Lease liabilities held for sale	24,136	0
Total current lease liabilities	78,462	64,851
Noncurrent operating lease liabilities	268,790	253,992	[1]
Noncurrent finance lease liabilities	39,850	22,274
Total noncurrent lease liabilities	308,640	276,266
Total lease liabilities	$ 387,102	$ 341,117
Finance Lease, Right-of-Use Asset, Statement of Financial Position [Extensible List]	us-gaap:OtherAssets
Operating Lease, Liability, Current, Statement of Financial Position [Extensible List]	us-gaap:AccountsPayableAndAccruedLiabilitiesCurrent
Finance Lease, Liability, Current, Statement of Financial Position [Extensible List]	us-gaap:DebtCurrent
Finance Lease, Liability, Noncurrent, Statement of Financial Position [Extensible List]	us-gaap:LongTermDebtNoncurrent
[1]	The year-end condensed consolidated balance sheet data was derived from audited financial statements, but does not include all disclosures required by accounting principles generally accepted in the United States of America.

Leases - Components of Company'

Leases - Components of Company's Lease Costs (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 27, 2020	Sep. 29, 2019	Sep. 27, 2020	Sep. 29, 2019
Leases [Abstract]
Operating lease cost	$ 18,192	$ 15,502	$ 46,903	$ 46,818
Amortization of lease asset	1,061	2,036	5,999	6,158
Interest on lease liabilities	258	214	721	735
Variable lease cost	7,455	10,657	29,316	27,626
Total lease cost	$ 26,966	$ 28,409	$ 82,939	$ 81,337

Leases - Other Lease Related In

Leases - Other Lease Related Information (Details) - USD ($) $ in Thousands	9 Months Ended
	Sep. 27, 2020	Sep. 29, 2019
Cash paid for amounts included in the measurement of lease liabilities:
Operating cash flows used by operating leases	$ 43,858	$ 46,374
Operating cash flows used by finance leases	721	735
Financing cash flows used by finance leases	6,440	7,593
Leased assets obtained in exchange for new operating lease liabilities	84,578	18,053
Leased assets obtained in exchange for new finance lease liabilities	$ 19,122	$ 1,186

Revenue Recognition - Additiona

Revenue Recognition - Additional Information (Details)	9 Months Ended
	Sep. 27, 2020
Revenue from Contract with Customer [Abstract]
Payment terms	120 days

Revenue Recognition - Receivabl

Revenue Recognition - Receivables, Contract Assets and Liabilities from Contracts with Customer (Details) - USD ($) $ in Thousands	Sep. 27, 2020	Dec. 31, 2019	Dec. 31, 2018
Revenue from Contract with Customer [Abstract]
Contract Assets	$ 57,288	$ 56,364	$ 48,786
Contract Liabilities	$ (18,813)	$ (17,047)	$ (18,533)

Revenue Recognition - Significa

Revenue Recognition - Significant Changes in the Contract Assets and Liabilities Balances (Details) - USD ($) $ in Thousands	9 Months Ended	12 Months Ended
	Sep. 27, 2020	Dec. 31, 2019
Contract Asset
Beginning Balance	$ 56,364	$ 48,786
Increases due to rights to consideration for customer specific goods produced, but not billed during the period	57,288	51,797
Transferred to receivables from contract assets recognized at the beginning of the period	(56,364)	(48,786)
Acquired as part of a business combination	0	4,567
Ending Balance	57,288	56,364
Contract Liability
Beginning Balance	(17,047)	(18,533)
Revenue deferred or rebates accrued	(25,840)	(29,062)
Recognized as revenue	6,315	8,473
Rebates paid to customers	17,759	22,075
Ending Balance	$ (18,813)	$ (17,047)

Revenue Recognition - Disaggreg

Revenue Recognition - Disaggregation of Revenue (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 27, 2020	Sep. 29, 2019	Sep. 27, 2020	Sep. 29, 2019
Disaggregation of Revenue [Line Items]
Revenue	$ 1,312,314	$ 1,353,931	$ 3,861,095	$ 4,065,357
United States
Disaggregation of Revenue [Line Items]
Revenue	848,582	859,245	2,528,385	2,582,892
Europe
Disaggregation of Revenue [Line Items]
Revenue	275,896	273,041	775,906	812,192
Canada
Disaggregation of Revenue [Line Items]
Revenue	39,881	53,527	139,030	172,402
Asia
Disaggregation of Revenue [Line Items]
Revenue	81,320	89,523	224,574	262,965
Other
Disaggregation of Revenue [Line Items]
Revenue	66,635	78,595	193,200	234,906
Consumer Packaging
Disaggregation of Revenue [Line Items]
Revenue	583,736	581,368	1,786,774	1,773,834
Consumer Packaging | United States
Disaggregation of Revenue [Line Items]
Revenue	414,070	415,567	1,284,095	1,268,863
Consumer Packaging | Europe
Disaggregation of Revenue [Line Items]
Revenue	107,849	99,276	313,199	306,495
Consumer Packaging | Canada
Disaggregation of Revenue [Line Items]
Revenue	22,131	26,567	74,708	82,706
Consumer Packaging | Asia
Disaggregation of Revenue [Line Items]
Revenue	19,710	17,714	53,993	51,072
Consumer Packaging | Other
Disaggregation of Revenue [Line Items]
Revenue	19,976	22,244	60,779	64,698
Display and Packaging
Disaggregation of Revenue [Line Items]
Revenue	137,610	145,016	366,269	417,403
Display and Packaging | United States
Disaggregation of Revenue [Line Items]
Revenue	53,296	59,688	156,809	187,347
Display and Packaging | Europe
Disaggregation of Revenue [Line Items]
Revenue	84,314	83,888	209,460	225,695
Display and Packaging | Canada
Disaggregation of Revenue [Line Items]
Revenue	0	0	0	0
Display and Packaging | Asia
Disaggregation of Revenue [Line Items]
Revenue	0	0	0	0
Display and Packaging | Other
Disaggregation of Revenue [Line Items]
Revenue	0	1,440	0	4,361
Paper and Industrial Converted Products
Disaggregation of Revenue [Line Items]
Revenue	459,312	495,829	1,368,734	1,483,194
Paper and Industrial Converted Products | United States
Disaggregation of Revenue [Line Items]
Revenue	272,810	279,908	808,810	817,364
Paper and Industrial Converted Products | Europe
Disaggregation of Revenue [Line Items]
Revenue	78,780	83,421	237,599	262,084
Paper and Industrial Converted Products | Canada
Disaggregation of Revenue [Line Items]
Revenue	17,750	26,960	64,322	89,696
Paper and Industrial Converted Products | Asia
Disaggregation of Revenue [Line Items]
Revenue	61,463	71,313	170,046	209,961
Paper and Industrial Converted Products | Other
Disaggregation of Revenue [Line Items]
Revenue	28,509	34,227	87,957	104,089
Protective Solutions
Disaggregation of Revenue [Line Items]
Revenue	131,656	131,718	339,318	390,926
Protective Solutions | United States
Disaggregation of Revenue [Line Items]
Revenue	108,406	104,082	278,671	309,318
Protective Solutions | Europe
Disaggregation of Revenue [Line Items]
Revenue	4,953	6,456	15,648	17,918
Protective Solutions | Canada
Disaggregation of Revenue [Line Items]
Revenue	0	0	0	0
Protective Solutions | Asia
Disaggregation of Revenue [Line Items]
Revenue	147	496	535	1,932
Protective Solutions | Other
Disaggregation of Revenue [Line Items]
Revenue	$ 18,150	$ 20,684	$ 44,464	$ 61,758

Segment Reporting - Additional

Segment Reporting - Additional Information (Details)	9 Months Ended
	Sep. 27, 2020segment
Segment Reporting [Abstract]
Number of reportable segments (segment)	4

Segment Reporting - Segment Fin

Segment Reporting - Segment Financial Information (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 27, 2020	Sep. 29, 2019	Sep. 27, 2020	Sep. 29, 2019
Segment Reporting Information [Line Items]
Net sales	$ 1,312,314	$ 1,353,931	$ 3,861,095	$ 4,065,357
Operating profit	106,744	138,548	340,574	385,204
Restructuring/Asset impairment charges	(24,149)	(6,615)	(59,633)	(30,642)
Consumer Packaging
Segment Reporting Information [Line Items]
Net sales	583,736	581,368	1,786,774	1,773,834
Display and Packaging
Segment Reporting Information [Line Items]
Net sales	137,610	145,016	366,269	417,403
Paper and Industrial Converted Products
Segment Reporting Information [Line Items]
Net sales	459,312	495,829	1,368,734	1,483,194
Protective Solutions
Segment Reporting Information [Line Items]
Net sales	131,656	131,718	339,318	390,926
Operating Segments | Consumer Packaging
Segment Reporting Information [Line Items]
Net sales	583,736	581,368	1,786,774	1,773,834
Operating profit	67,897	56,744	221,827	181,801
Operating Segments | Display and Packaging
Segment Reporting Information [Line Items]
Net sales	137,610	145,016	366,269	417,403
Operating profit	10,773	8,913	24,848	21,256
Operating Segments | Paper and Industrial Converted Products
Segment Reporting Information [Line Items]
Net sales	459,312	495,829	1,368,734	1,483,194
Operating profit	34,366	59,427	118,343	169,043
Operating Segments | Protective Solutions
Segment Reporting Information [Line Items]
Net sales	131,656	131,718	339,318	390,926
Operating profit	17,505	13,983	35,991	39,262
Intersegment Sales
Segment Reporting Information [Line Items]
Net sales	35,133	36,203	100,087	106,541
Intersegment Sales | Consumer Packaging
Segment Reporting Information [Line Items]
Net sales	2,779	1,351	7,503	3,394
Intersegment Sales | Display and Packaging
Segment Reporting Information [Line Items]
Net sales	1,079	1,112	3,546	3,393
Intersegment Sales | Paper and Industrial Converted Products
Segment Reporting Information [Line Items]
Net sales	30,873	33,485	87,933	98,674
Intersegment Sales | Protective Solutions
Segment Reporting Information [Line Items]
Net sales	402	255	1,105	1,080
Segment Reconciling Items
Segment Reporting Information [Line Items]
Other, net	$ 352	$ 6,096	$ (802)	$ 4,484

Commitments and Contingencies -

Commitments and Contingencies - Additional Information (Details) - USD ($) $ in Thousands	3 Months Ended	107 Months Ended
	Sep. 29, 2019	Sep. 27, 2020	Dec. 31, 2019	Nov. 30, 2011
Site Contingency [Line Items]
Environmental accrual		$ 8,208	$ 8,727
Spartanburg, South Carolina Site | Selling, general and administrative
Site Contingency [Line Items]
Decrease of reserves	$ 10,000
Spartanburg, South Carolina Site | Tegrant Holding Corporation
Site Contingency [Line Items]
Environmental accrual		5,711	5,789	$ 17,400
Payment towards remediation of sites		1,689
Multiple Sites
Site Contingency [Line Items]
Environmental accrual		$ 2,497	$ 2,938