Kellogg (K) 10-Q 30 Oct 20 2020 Q3 Quarterly report Financial data

Cover Page

Cover Page	9 Months Ended
	Sep. 26, 2020shares
Entity Information [Line Items]
Document Type	10-Q
Document Quarterly Report	true
Entity Registrant Name	KELLOGG COMPANY
Document Period End Date	Sep. 26, 2020
Document Transition Report	false
Entity File Number	1-4171
Entity Incorporation, State or Country Code	DE
Entity Tax Identification Number	38-0710690
Entity Address, Address Line One	One Kellogg Square
Entity Address, Address Line Two	P.O. Box 3599
Entity Address, City or Town	Battle Creek
Entity Address, State or Province	MI
Entity Address, Postal Zip Code	49016-3599
City Area Code	269
Local Phone Number	961-2000
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 (in shares)	343,712,976
Amendment Flag	false
Document Fiscal Period Focus	Q3
Document Fiscal Year Focus	2020
Entity Central Index Key	0000055067
Current Fiscal Year End Date	--01-02
Common stock
Entity Information [Line Items]
Title of 12(b) Security	Common Stock, $.25 par value per share
Trading Symbol	K
Security Exchange Name	NYSE
1.750% Senior Notes Due 2021 [Member]
Entity Information [Line Items]
Title of 12(b) Security	1.750% Senior Notes due 2021
Trading Symbol	K 21
Security Exchange Name	NYSE
0.800% Senior Notes Due 2022 [Member]
Entity Information [Line Items]
Title of 12(b) Security	0.800% Senior Notes due 2022
Trading Symbol	K 22A
Security Exchange Name	NYSE
1.000% Senior Notes Due 2024 [Member]
Entity Information [Line Items]
Title of 12(b) Security	1.000% Senior Notes due 2024
Trading Symbol	K 24
Security Exchange Name	NYSE
1.250% Senior Notes Due 2025 [Member]
Entity Information [Line Items]
Title of 12(b) Security	1.250% Senior Notes due 2025
Trading Symbol	K 25
Security Exchange Name	NYSE

Consolidated Balance Sheet (Una

Consolidated Balance Sheet (Unaudited) - USD ($) $ in Millions	Sep. 26, 2020	Dec. 28, 2019
Current assets
Cash and cash equivalents	$ 1,329	$ 397
Marketable securities	250	0
Accounts receivable, net	1,626	1,576
Inventories	1,263	1,226
Other current assets	285	232
Total current assets	4,753	3,431
Property, net	3,484	3,612
Operating lease right-of-use assets	657	541
Goodwill	5,780	5,861
Other intangibles, net	2,498	2,576
Investments in unconsolidated entities	398	404
Other assets	1,352	1,139
Total assets	18,922	17,564
Current liabilities
Current maturities of long-term debt	1,417	620
Notes payable	116	107
Accounts payable	2,449	2,387
Current operating lease liabilities	120	114
Accrued advertising and promotion	807	641
Other current liabilities	1,125	909
Total current liabilities	6,034	4,778
Long-term debt	7,000	7,195
Operating lease liabilities	523	433
Deferred income taxes	587	596
Pension liability	672	705
Other liabilities	520	543
Commitments and contingencies
Equity
Common stock, $.25 par value	105	105
Capital in excess of par value	948	921
Retained earnings	8,318	7,859
Treasury stock, at cost	(4,570)	(4,690)
Accumulated other comprehensive income (loss)	(1,757)	(1,448)
Total Kellogg Company equity	3,044	2,747
Noncontrolling interests	542	567
Total equity	3,586	3,314
Total liabilities and equity	$ 18,922	$ 17,564

Consolidated Balance Sheet (U_2

Consolidated Balance Sheet (Unaudited) (Parenthetical) - $ / shares	Sep. 26, 2020	Dec. 28, 2019
Statement of Financial Position [Abstract]
Common stock, par value (in dollars per share)	$ 0.25	$ 0.25

Consolidated Statement of Incom

Consolidated Statement of Income (Unaudited) - USD ($) shares in Thousands, $ in Millions	3 Months Ended		9 Months Ended
	Sep. 26, 2020	Sep. 28, 2019	Sep. 26, 2020	Sep. 28, 2019
Income Statement [Abstract]
Net sales	$ 3,429	$ 3,372	$ 10,306	$ 10,355
Cost of goods sold	2,228	2,372	6,764	7,062
Selling, general and administrative expense	790	737	2,166	2,252
Operating profit	411	263	1,376	1,041
Interest expense	63	72	196	221
Other income (expense), net	70	150	151	247
Income before income taxes	418	341	1,331	1,067
Income taxes	65	91	268	237
Earnings (loss) from unconsolidated entities	(1)	(2)	(7)	(5)
Net income	352	248	1,056	825
Net income attributable to noncontrolling interests	4	1	10	10
Net income attributable to Kellogg Company	$ 348	$ 247	$ 1,046	$ 815
Per share amounts:
Basic earnings (in dollars per share)	$ 1.02	$ 0.73	$ 3.05	$ 2.39
Diluted earnings (in dollars per share)	$ 1.01	$ 0.72	$ 3.03	$ 2.38
Average shares outstanding:
Basic (in shares)	343,000	341,000	343,000	341,000
Diluted (in shares)	346,000	342,000	345,000	342,000
Actual shares outstanding at period end (in shares)	344,000	341,000	344,000	341,000

Consolidated Statement of Compr

Consolidated Statement of Comprehensive Income (Unaudited) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 26, 2020	Sep. 28, 2019	Sep. 26, 2020	Sep. 28, 2019
Statement of Comprehensive Income [Abstract]
Net income	$ 352	$ 248	$ 1,056	$ 825
Other comprehensive income (loss), pre-tax:
Foreign currency translation adjustments, pre-tax	(91)	35	(352)	96
Cash flow hedges, pre-tax:
Unrealized gain (loss) on cash flow hedges, pre-tax	15	(12)	(38)	(12)
Reclassification to net income, pre-tax	4	(1)	11	2
Postretirement and postemployment benefits reclassification to net income, pre-tax:
Net experience (gain) loss	0	(1)	(2)	(3)
Prior service cost	0		(1)
Available-for-sale securities, pre-tax
Unrealized gain (loss) on available-for-sale securities, pre-tax	0	1	2	4
Reclassification to net income on available-for-sale securities, pre-tax		(4)		(4)
Other comprehensive income (loss), pre-tax	(72)	18	(380)	83
Other comprehensive income (loss), tax (expense) benefit
Foreign currency translation adjustments, tax (expense) benefit	39	(38)	29	(47)
Cash flow hedges, tax (expense) benefit:
Unrealized gain (loss) on cash flow hedges, tax (expense) benefit	(4)	4	10	4
Reclassification to net income, tax (expense) benefit	(1)	0	(3)	(1)
Postretirement and postemployment benefits reclassification to net income, tax (expense) benefit:
Net experience loss, tax (expense) benefit	0	0	1	1
Prior service cost, tax (expense) benefit	0		0
Available-for-sale securities, tax (expense) benefit
Unrealized gain (loss) on available-for-sale securities, tax (expense) benefit	0	0	0	0
Reclassification to net income on available for sale of securities, tax (expense) benefit		0		0
Other comprehensive income (loss), tax (expense) benefit	34	(34)	37	(43)
Other comprehensive income (loss), after tax:
Foreign currency translation adjustments, after-tax	(52)	(3)	(323)	49
Cash flow hedges, after tax
Unrealized gain (loss) on cash flow hedges, after-tax	11	(8)	(28)	(8)
Reclassification to net income, after-tax	3	(1)	8	1
Postretirement and postemployment benefits reclassification to net income, after-tax:
Net experience (gain) loss, after-tax	0	(1)	(1)	(2)
Prior service cost, after-tax	0		(1)
Available-for-sale securities, after tax
Unrealized gain (loss) on available-for-sale securities, after-tax	0	1	2	4
Reclassification to net income on available for sale securities, after tax		(4)		(4)
Other comprehensive income (loss)	(38)	(16)	(343)	40
Comprehensive income	314	232	713	865
Net income attributable to noncontrolling interests	4	1	10	10
Other comprehensive income (loss) attributable to noncontrolling interests	2	(2)	(34)	1
Comprehensive income attributable to Kellogg Company	$ 308	$ 233	$ 737	$ 854

Consolidated Statement of Equit

Consolidated Statement of Equity (Unaudited) - USD ($) shares in Millions, $ in Millions	Total	Common stock	Capital in excess of par value	Retained earnings	Treasury stock	Accumulated other comprehensive income (loss)	Total Kellogg Company equity	Non-controlling interests
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest	$ 3,159
Balance at Dec. 29, 2018		$ 105	$ 895	$ 7,652	$ (4,551)	$ (1,500)	$ 2,601	$ 558
Balance (in shares) at Dec. 29, 2018		421			77
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Common stock repurchases (in shares)					4
Common stock repurchases	(220)				$ (220)		(220)
Net income	825			815			815	10
Sale of subsidiary shares to noncontrolling interest	1						0	1
Dividends declared	(574)			(574)			(574)
Distributions to noncontrolling interest	(9)						0	(9)
Other comprehensive income (loss)	40					39	39	1
Reclassification of tax effects relating to U.S. tax reform	0			22		(22)	0
Stock compensation	42		42				42
Stock options exercised and other (in shares)					(1)
Stock options exercised and other	24		(28)	(5)	$ 57		24
Balance (in shares) at Sep. 28, 2019		421			80
Balance at Sep. 28, 2019		$ 105	909	7,910	$ (4,714)	(1,483)	2,727	561
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest	3,212
Balance at Jun. 29, 2019		$ 105	895	7,858	$ (4,739)	(1,469)	2,650	562
Balance (in shares) at Jun. 29, 2019		421			80
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	248			247			247	1
Dividends declared	(194)			(194)			(194)
Other comprehensive income (loss)	(16)					(14)	(14)	(2)
Stock compensation	13		13				13
Stock options exercised and other (in shares)					0
Stock options exercised and other	25		1	(1)	$ 25		25
Balance (in shares) at Sep. 28, 2019		421			80
Balance at Sep. 28, 2019		$ 105	909	7,910	$ (4,714)	(1,483)	2,727	561
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest	3,288
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest	3,314
Balance at Dec. 28, 2019	2,747	$ 105	921	7,859	$ (4,690)	(1,448)	2,747	567
Balance (in shares) at Dec. 28, 2019		421			79
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	1,056			1,046			1,046	10
Dividends declared	(586)			(586)			(586)
Distributions to noncontrolling interest	(1)						0	(1)
Other comprehensive income (loss)	(343)					(309)	(309)	(34)
Stock compensation	55		55				55
Stock options exercised and other (in shares)					(2)
Stock options exercised and other	91		(28)	(1)	$ 120		91
Balance (in shares) at Sep. 26, 2020		421			77
Balance at Sep. 26, 2020	3,044	$ 105	948	8,318	$ (4,570)	(1,757)	3,044	542
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest	3,406
Balance at Jun. 27, 2020		$ 105	929	8,166	$ (4,613)	(1,717)	2,870	536
Balance (in shares) at Jun. 27, 2020		421			78
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	352			348			348	4
Dividends declared	(196)			(196)			(196)
Other comprehensive income (loss)	(38)					(40)	(40)	2
Stock compensation	18		18				18
Stock options exercised and other (in shares)					(1)
Stock options exercised and other	44		1	0	$ 43		44
Balance (in shares) at Sep. 26, 2020		421			77
Balance at Sep. 26, 2020	3,044	$ 105	$ 948	$ 8,318	$ (4,570)	$ (1,757)	$ 3,044	$ 542
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest	$ 3,586

Consolidated Statement of Equ_2

Consolidated Statement of Equity Consolidated Statement of Equity (Parenthetical) - $ / shares	3 Months Ended		9 Months Ended
	Sep. 26, 2020	Sep. 28, 2019	Sep. 26, 2020	Sep. 28, 2019
Statement of Stockholders' Equity [Abstract]
Dividends declared - per share	$ 0.57	$ 0.57	$ 1.71	$ 1.69

Consolidated Statement of Cash

Consolidated Statement of Cash Flows (Unaudited) - USD ($) $ in Millions	9 Months Ended
	Sep. 26, 2020	Sep. 28, 2019
Operating activities
Net income	$ 1,056	$ 825
Adjustments to reconcile net income to operating cash flows:
Depreciation and amortization	355	360
Postretirement benefit plan expense (benefit)	(113)	(158)
Deferred income taxes	57	(206)
Stock compensation	55	42
Multi-employer pension plan exit liability	(5)	132
Other	(34)	(70)
Postretirement benefit plan contributions	(19)	(19)
Changes in operating assets and liabilities, net of acquisitions:
Trade receivables	(113)	(253)
Inventories	(57)	16
Accounts payable	108	0
All other current assets and liabilities	303	256
Net cash provided by (used in) operating activities	1,593	925
Investing activities
Additions to properties	(326)	(436)
Purchase of marketable securities	(250)	0
Acquisitions, net of cash acquired	0	(8)
Acquisition of cost method investments	(4)	0
Divestitures	0	1,332
Purchases of available for sale securities	(75)	(18)
Sales of available for sale securities	13	83
Other	(7)	(22)
Net cash provided by (used in) investing activities	(649)	931
Financing activities
Net issuances (reductions) of notes payable	9	9
Issuances of long-term debt	554	40
Reductions of long-term debt	(45)	(1,000)
Debt redemption costs	0	(17)
Net issuances of common stock	105	40
Common stock repurchases	0	(220)
Cash dividends	(586)	(574)
Collateral received on derivative instruments	(14)	0
Other	(2)	(9)
Net cash provided by (used in) financing activities	21	(1,731)
Effect of exchange rate changes on cash and cash equivalents	(33)	7
Increase (decrease) in cash and cash equivalents	932	132
Cash and cash equivalents at beginning of period	397	321
Cash and cash equivalents at end of period	1,329	453
Supplemental cash flow disclosures
Interest paid	124	180
Income taxes paid	212	211
Supplemental cash flow disclosures of non-cash investing activities
Additions to properties included in accounts payable	$ 108	$ 93

Accounting Policies

Accounting Policies	9 Months Ended
	Sep. 26, 2020
Accounting Policies [Abstract]
Accounting Policies	Accounting policies Basis of presentation The unaudited interim financial information of Kellogg Company (the Company) included in this report reflects all adjustments, all of which are of a normal and recurring nature, that management believes are necessary for a fair statement of the results of operations, comprehensive income, financial position, equity and cash flows for the periods presented. This interim information should be read in conjunction with the financial statements and accompanying footnotes within the Company’s 2019 Annual Report on Form 10-K. The condensed balance sheet information at December 28, 2019 was derived from audited financial statements, but does not include all disclosures required by accounting principles generally accepted in the United States. The results of operations for the quarter ended September 26, 2020 are not necessarily indicative of the results to be expected for other interim periods or the full year. During the quarter ended September 26, 2020, the Company began to recognize an estimate of certain customer allowances at the time of sale in accordance with ASC 606, resulting in an out-of-period adjustment of $14 million decreasing net sales and accounts receivable. The Company determined the adjustment to be immaterial to current and previously issued financial statements. Accounts payable The Company has agreements with certain third parties to provide accounts payable tracking systems which facilitates participating suppliers’ ability to monitor and, if elected, sell payment obligations from the Company to designated third-party financial institutions. Participating suppliers may, at their sole discretion, make offers to sell one or more payment obligations of the Company prior to their scheduled due dates at a discounted price to participating financial institutions. The Company’s goal in entering into these agreements is to capture overall supplier savings, in the form of payment terms or vendor funding, created by facilitating suppliers’ ability to sell payment obligations, while providing them with greater working capital flexibility. We have no economic interest in the sale of these suppliers’ receivables and no direct financial relationship with the financial institutions concerning these services. The Company’s obligations to its suppliers, including amounts due and scheduled payment dates, are not impacted by suppliers’ decisions to sell amounts under these arrangements. However, the Company’s right to offset balances due from suppliers against payment obligations is restricted by this agreement for those payment obligations that have been sold by suppliers. The payment of these obligations by the Company is included in cash used in operating activities in the Consolidated Statement of Cash Flows. As of September 26, 2020, $893 million of the Company’s outstanding payment obligations had been placed in the accounts payable tracking system, and participating suppliers had sold $651 million of those payment obligations to participating financial institutions. As of December 28, 2019, $812 million of the Company’s outstanding payment obligations had been placed in the accounts payable tracking system, and participating suppliers had sold $605 million of those payment obligations to participating financial institutions. Adoption of new accounting standards Cloud Computing Arrangements . In August 2018, the FASB issued ASU 2018-15: Intangibles - Goodwill and Other - Internal-Use Software: Customer's Accounting for Implementation Costs Incurred in a Cloud Computing Arrangement that is a Service Contract. The ASU allows companies to capitalize implementation costs incurred in a hosting arrangement that is a service contract over the term of the hosting arrangement, including periods covered by renewal options that are reasonably certain to be exercised. The ASU is effective for fiscal years, and interim periods within those years, beginning after December 15, 2019 and can be applied retrospectively or prospectively. Early adoption is permitted. The Company adopted the ASU in the first quarter of 2020 and elected to apply it prospectively. The adoption did not have a material impact to the Company's Consolidated Financial Statements. Accounting standards to be adopted in future periods Compensation Retirement Benefits. In August 2018, the FASB issued ASU 2018-14: Disclosure Framework—Changes to the Disclosure Requirements for Defined Benefit Plans. The ASU removed disclosures that no longer are considered cost beneficial, clarified the specific requirements of disclosures, and added disclosure requirements identified as relevant. The ASU is effective for fiscal years, and interim periods within those years, beginning after December 15, 2020 and can be applied retrospectively or prospectively. Early adoption is permitted. The Company is currently assessing when to adopt the ASU and the impact of adoption.

Sale of Accounts Receivable

Sale of Accounts Receivable	9 Months Ended
	Sep. 26, 2020
Transfers and Servicing of Financial Assets [Abstract]
Transfers and Servicing of Financial Assets [Text Block]	Sale of accounts receivable The Company has a program in which a discrete group of customers are allowed to extend their payment terms in exchange for the elimination of early payment discounts (Extended Terms Program). The Company has two Receivable Sales Agreements (Monetization Programs) described below, which are intended to directly offset the impact the Extended Terms Program would have on the days-sales-outstanding (DSO) metric that is critical to the effective management of the Company's accounts receivable balance and overall working capital. The Monetization Programs are designed to effectively offset the impact on working capital of the Extended Terms Program. The Monetization Programs sell, on a revolving basis, certain trade accounts receivable invoices to third party financial institutions. Transfers under these agreements are accounted for as sales of receivables resulting in the receivables being de-recognized from the Consolidated Balance Sheet. The Monetization Programs provide for the continuing sale of certain receivables on a revolving basis until terminated by either party; however the maximum receivables that may be sold at any time is $1,033 million. The Company has no retained interest in the receivables sold, however the Company does have collection and administrative responsibilities for the sold receivables. The Company has not recorded any servicing assets or liabilities as of September 26, 2020 and December 28, 2019 for these agreements as the fair value of these servicing arrangements as well as the fees earned were not material to the financial statements. Accounts receivable sold of $929 million and $774 million remained outstanding under these arrangements as of September 26, 2020 and December 28, 2019, respectively. The proceeds from these sales of receivables are included in cash from operating activities in the Consolidated Statement of Cash Flows in the period of sale. The recorded net loss on sale of receivables was $3 million and $11 million for the quarter and year-to-date periods ended September 26, 2020, respectively and was $6 million and $21 million for the quarter and year-to-date periods ended September 28, 2019, respectively. The recorded loss is included in Other income and expense (OIE). Other programs

Divestiture

Divestiture	9 Months Ended
	Sep. 26, 2020
Discontinued Operations and Disposal Groups [Abstract]
Disposal Groups, Including Discontinued Operations, Disclosure [Text Block]	Divestiture On July 28, 2019, the Company completed its sale of selected cookies, fruit and fruit-flavored snacks, pie crusts, and ice cream cones businesses to Ferrero International S.A. (“Ferrero”) for approximately $1.3 billion in cash, subject to a working capital adjustment mechanism. Both the total assets and net assets of the businesses were approximately $1.3 billion, resulting in a net pre-tax gain of $38 million during the third quarter of 2019, recorded in OIE, after including related costs to sell of $14 million. Additionally, the Company recognized curtailment gains related to the divestiture totaling $17 million in our U.S. pension and nonpension postretirement plans. The operating results for these businesses were primarily included in the North America reportable segment prior to the sale. Proceeds from the divestiture were used primarily to redeem $1.0 billion of debt during the third quarter of 2019. In connection with the sale, the Company entered into a transition services agreement (TSA) with Ferrero, under which the Company will provide certain services to Ferrero to help facilitate an orderly transition of the businesses

Goodwill and Other Intangible A

Goodwill and Other Intangible Assets	9 Months Ended
	Sep. 26, 2020
Goodwill and Intangible Assets Disclosure [Abstract]
Goodwill and other intangible assets	Goodwill and Other intangible assets Goodwill and Intangible Assets Changes in the carrying amount of goodwill, intangible assets subject to amortization, consisting primarily of customer relationships, and indefinite-lived intangible assets, consisting of brands and distribution agreements, are presented in the following tables: Carrying amount of goodwill (millions) North Europe Latin AMEA Consoli- December 28, 2019 $ 4,422 $ 347 $ 213 $ 879 $ 5,861 Currency translation adjustment (1) — (44) (36) (81) September 26, 2020 $ 4,421 $ 347 $ 169 $ 843 $ 5,780 Intangible assets subject to amortization Gross carrying amount (millions) North Europe Latin AMEA Consoli- December 28, 2019 $ 64 $ 41 $ 60 $ 429 $ 594 Currency translation adjustment — — (16) (24) (40) September 26, 2020 $ 64 $ 41 $ 44 $ 405 $ 554 Accumulated Amortization December 28, 2019 $ 31 $ 21 $ 15 $ 34 $ 101 Amortization 3 3 2 13 21 Currency translation adjustment — — (4) (2) (6) September 26, 2020 $ 34 $ 24 $ 13 $ 45 $ 116 Intangible assets subject to amortization, net December 28, 2019 $ 33 $ 20 $ 45 $ 395 $ 493 Amortization (3) (3) (2) (13) (21) Currency translation adjustment — — (12) (22) (34) September 26, 2020 $ 30 $ 17 $ 31 $ 360 $ 438 For intangible assets in the preceding table, amortization was $21 million and $20 million for the year-to-date periods ended September 26, 2020 and September 28, 2019, respectively. The currently estimated aggregate annual amortization expense for full-year 2020 is approximately $28 million. Intangible assets not subject to amortization (millions) North Europe Latin AMEA Consoli- December 28, 2019 $ 1,238 $ 392 $ 70 $ 383 $ 2,083 Currency translation adjustment — 17 (19) (21) (23) September 26, 2020 $ 1,238 $ 409 $ 51 $ 362 $ 2,060

Restructuring Programs

Restructuring Programs	9 Months Ended
	Sep. 26, 2020
Restructuring and Related Activities [Abstract]
Restructuring and Cost Reduction Activities	Restructuring programs The Company views its restructuring programs as part of its operating principles to provide greater visibility in achieving its long-term profit growth targets. Initiatives undertaken are currently expected to recover cash implementation costs within a 3 to 5-year period of completion. Upon completion (or as each major stage is completed in the case of multi-year programs), the project begins to deliver cash savings and/or reduced depreciation. During the second quarter of 2019, the Company announced a reorganization plan for the European reportable segment designed to simplify the organization, increase organizational efficiency, and enhance key processes. The overall project is expected to be substantially completed by the end of fiscal year 2020. The project is expected to result in cumulative pretax net charges of approximately $40 million, including certain non-cash credits. Cash costs are expected to be approximately $50 million. The total expected charges will include severance and other termination benefits and charges related to relocation, third party legal and consulting fees, and contract termination costs. The charges related to this initiative were less than $1 million during the quarter ended September 26, 2020 and were $3 million for year-to-date period ended September 26, 2020. These charges were recorded in SG&A expense. Since inception, the Company has recognized total charges, including non-cash credits, of $41 million attributed to this initiative. Additionally during the second quarter of 2019, the Company announced a reorganization plan which primarily impacted the North America reportable segment. The reorganization plan was designed to simplify the organization that supports the remaining North America reportable segment after the divestiture and related transition. The overall project is expected to be substantially completed by the end of fiscal year 2020. The overall project is expected to result in cumulative pretax charges of approximately $25 million. Cash costs are expected to approximate the pretax charges. Total expected charges will include severance and other termination benefits and charges related to third party consulting fees. The charges related to this initiative were less than $1 million during the quarter ended and year-to-date period ended September 26, 2020. Since inception, the Company has recognized total charges of $21 million attributed to this initiative. These charges were recorded in SG&A expense. In addition to the projects discussed above, during the year-to-date period ended September 26, 2020 the Company also incurred restructuring costs of $4 million in the Latin America reportable segment and $8 million in the AMEA reportable segment related to reorganization and simplification of those businesses. These costs primarily relate to severance and other termination benefits. Project K As of the end of 2019, the Company completed implementation of all Project K initiatives. Total project charges, after-tax cash costs and annual savings delivered by Project K were in line with expectations. During the quarter and year-to-date period ended September 28, 2019, the Company recorded total charges of $15 million and $38 million, respectively, related to Project K. Total Projects The tables below provide the details for charges incurred during the quarters and year-to-date periods ended September 26, 2020 and September 28, 2019 and program costs to date for all programs currently active as of September 26, 2020. Quarter ended Year-to-date period ended Program costs to date (millions) September 26, 2020 September 28, 2019 September 26, 2020 September 28, 2019 September 26, 2020 Employee related costs $ — $ (1) $ 13 $ 41 $ 63 Pension curtailment (gain) loss, net — — — — (5) Asset related costs — 5 — 15 — Other costs — 14 2 35 16 Total $ — $ 18 $ 15 $ 91 $ 74 Quarter ended Year-to-date period ended Program costs to date (millions) September 26, 2020 September 28, 2019 September 26, 2020 September 28, 2019 September 26, 2020 North America $ — $ 13 $ (2) $ 45 $ 19 Europe — 1 3 35 41 Latin America — 4 4 8 4 AMEA — — 8 3 8 Corporate — — 2 — 2 Total $ — $ 18 $ 15 $ 91 $ 74 Charges related to restructuring programs were less than $1 million during the quarter ended September 26, 2020. During the year-to-date period ended September 26, 2020, the Company recorded total charges of $15 million across all restructuring programs. The charges were comprised of $6 million recorded in COGS and $9 million recorded in SG&A expense. During the quarter ended September 28, 2019, the Company recorded total net charges of $18 million across all restructuring programs. The charges were comprised of $13 million of expense recorded in COGS and $5 million of expense recorded in SG&A expense. During the year-to-date period ended September 28, 2019, the Company recorded total charges of $91 million across all restructuring programs. The charges were comprised of $30 million recorded in COGS and $61 million recorded in SG&A expense. Employee related costs consist primarily of severance and related benefits. Pension curtailment (gain) loss consists of curtailment gains or losses that resulted from project initiatives. Asset related costs consist primarily of accelerated depreciation and asset write-offs. Other costs consist of third-party incremental costs related to the development and implementation of enhanced global structures and capabilities. At September 26, 2020 total project reserves were $22 million, related to severance payments and other costs of which a substantial portion will be paid in 2020. The following table provides details for exit cost reserves related to the reorganizations described above. Employee Pension curtailment (gain) loss, net Other Total Liability as of December 28, 2019 $ 37 $ — $ 1 $ 38 2020 restructuring charges 13 — 2 15 Cash payments (28) — (3) (31) Non-cash charges and other — — — — Liability as of September 26, 2020 $ 22 $ — $ — $ 22

Equity

Equity	9 Months Ended
	Sep. 26, 2020
Equity [Abstract]
Equity	Equity Earnings per share Basic earnings per share is determined by dividing net income by the weighted average number of common shares outstanding during the period. Diluted earnings per share is similarly determined, except that the denominator is increased to include the number of additional common shares that would have been outstanding if all dilutive potential common shares had been issued. Dilutive potential common shares consist principally of employee stock options issued by the Company, restricted stock units, and to a lesser extent, certain contingently issuable performance shares. There were 7 million anti-dilutive potential common shares excluded from the reconciliation for the quarter and year-to-date periods ended September 26, 2020. There were 10 million and 14 million anti-dilutive potential common shares excluded from the reconciliation for the quarter and year-to-date periods ended September 28, 2019. Please refer to the Consolidated Statement of Income for basic and diluted earnings per share for the quarter and year-to-date periods ended September 26, 2020 and September 28, 2019. Share repurchases In February 2020, the board of directors approved a new authorization to repurchase up to $1.5 billion of our common stock through December 2022. During the year-to-date period ended September 26, 2020, the company did not repurchase any shares of common stock and $1.5 billion remains available under the authorization. During the year-to-date period ended September 28, 2019, the Company repurchased approximately 4 million shares of common stock for a total of $220 million. Comprehensive income Comprehensive income includes net income and all other changes in equity during a period except those resulting from investments by or distributions to shareholders. Other comprehensive income consists of foreign currency translation adjustments, fair value adjustments associated with cash flow hedges, adjustments for net experience losses and prior service cost related to employee benefit plans, and adjustments for unrealized gains and losses on available-for-sale securities, net of related tax effects. Reclassifications out of Accumulated other comprehensive income (AOCI) for the quarter and year-to-date periods ended September 26, 2020 and September 28, 2019, consisted of the following: (millions) Details about AOCI Amount reclassified Line item impacted Quarter ended Year-to-date period ended (Gains) losses on cash flow hedges: Interest rate contracts $ 4 $ 11 Interest expense $ 4 $ 11 Total before tax (1) (3) Tax expense (benefit) $ 3 $ 8 Net of tax Amortization of postretirement and postemployment benefits: Net experience (gain) loss $ — $ (2) OIE Prior service cost — (1) See Note 9 for further details $ — $ (3) Total before tax — 1 Tax expense (benefit) $ — $ (2) Net of tax Total reclassifications $ 3 $ 6 Net of tax (millions) Details about AOCI Amount reclassified Line item impacted Quarter ended Year-to-date period ended (Gains) losses on cash flow hedges: Interest rate contracts $ (1) $ 2 Interest expense $ (1) $ 2 Total before tax — (1) Tax expense (benefit) $ (1) $ 1 Net of tax Amortization of postretirement and postemployment benefits: Net experience loss $ (1) $ (3) See Note 9 for further details $ (1) $ (3) Total before tax — 1 Tax expense (benefit) $ (1) $ (2) Net of tax (Gain) loss on available-for-sale securities: Corporate bonds $ (4) $ (4) OIE $ (4) $ (4) Total before tax — — Tax expense (benefit) $ (4) $ (4) Net of tax Total reclassifications $ (6) $ (5) Net of tax Accumulated other comprehensive income (loss), net of tax, as of September 26, 2020 and December 28, 2019 consisted of the following: (millions) September 26, December 28, Foreign currency translation adjustments $ (1,688) $ (1,399) Cash flow hedges — unrealized net gain (loss) (80) (60) Postretirement and postemployment benefits: Net experience gain (loss) 6 7 Prior service credit (cost) 3 4 Available-for-sale securities unrealized net gain (loss) 2 — Total accumulated other comprehensive income (loss) $ (1,757) $ (1,448)

Notes payable and long-term deb

Notes payable and long-term debt	9 Months Ended
	Sep. 26, 2020
Debt Disclosure [Abstract]
Notes payable	Notes payable and long-term debt The following table presents the components of notes payable at September 26, 2020 and December 28, 2019: September 26, 2020 December 28, 2019 (millions) Principal Effective Principal Effective U.S. commercial paper $ — — % $ 3 1.78 % Bank borrowings 116 104 Total $ 116 $ 107 In May of 2020, the Company issued $500 million of ten In connection with the May 2020 debt issuance, the Company terminated forward starting interest rate swaps with notional amounts totaling $500 million, resulting in a $51 million loss that will be amortized to interest expense over the term of the Notes. In August 2019, the Company redeemed $191 million of its 4.15% U.S. Dollar Notes due November 2019, $248 million of its 4.00% U.S. Dollar Notes due 2020, $202 million of its 3.25% U.S. Dollar Notes due 2021, and $50 million of its 2.65% U.S. Dollar Notes due 2023. In connection with the debt redemption, the Company incurred $15 million of interest expense, consisting primarily of a premium on the tender offer and also including accelerated losses on pre-issuance interest rate hedges, acceleration of unamortized debt discount and fees on the redeemed debt and fees related to the tender offer. In September 2019, the Company redeemed $309 million of its 4.15% U.S. Dollar Notes due November 2019, the remaining principal balance subsequent to the August redemption. In connection with the debt redemption, the Company incurred $1 million of interest expense, consisting primarily of a premium and also including accelerated losses on pre-issuance interest rate hedges, acceleration of fees and debt discount on the redeemed debt and fees related to the make whole call.

Stock Compensation

Stock Compensation	9 Months Ended
	Sep. 26, 2020
Share-based Payment Arrangement [Abstract]
Stock Compensation	Stock compensation The Company uses various equity-based compensation programs to provide long-term performance incentives for its global workforce. Currently, these incentives consist principally of stock options, restricted stock units, and executive performance shares. The Company also sponsors a discounted stock purchase plan in the United States and matching-grant programs in several international locations. Additionally, the Company awards restricted stock to its outside directors. The interim information below should be read in conjunction with the disclosures included within the stock compensation footnote of the Company’s 2019 Annual Report on Form 10-K. In April 2020, the Amended and Restated Kellogg Company 2002 Employee Stock Purchase Plan was approved by shareholders, effective July 1, 2020. The plan is a tax-qualified employee stock purchase plan made available to substantially all U.S. employees, which allows participants to acquire Kellogg stock at a discounted price. The purpose of the plan is to encourage employees at all levels to purchase stock and become shareholders. The Company classifies pre-tax stock compensation expense in COGS and SG&A expense principally within its Corporate segment. For the periods presented, compensation expense for all types of equity-based programs and the related income tax benefit recognized was as follows: Quarter ended Year-to-date period ended (millions) September 26, 2020 September 28, 2019 September 26, 2020 September 28, 2019 Pre-tax compensation expense $ 18 $ 14 $ 59 $ 46 Related income tax benefit $ 5 $ 4 $ 16 $ 12 In February, the Company granted stock options, restricted stock units, and performance shares, in conjunction with our primary annual award, under the 2017 Long-Term Incentive Plan, approved by shareholders in 2017. During the year-to-date period ended September 26, 2020, the Company granted approximately 0.6 million restricted stock units at a weighted average cost of $66 per share and 2.3 million non-qualified stock options at a weighted average cost of $7 per share. Terms of these grants and the Company’s methods for determining grant-date fair value of the awards were consistent with that described within the stock compensation footnote in the Company’s 2019 Annual Report on Form 10-K. Performance shares In the first quarter of 2020, the Company granted performance shares to a limited number of senior level employees, which entitle these employees to receive a specified number of shares of the Company’s common stock upon vesting. The number of shares earned could range between 0% and 200% of the target amount depending upon performance achieved over the three three three Compensation cost related to organic net sales growth performance and cash flow targets are revised for changes in the expected outcome. The 2020 target grant currently corresponds to approximately 337,000 shares, with a grant-date fair value of $66 per share. The 2017 performance share award, payable in stock, was settled at 90% of target in February 2020 for a total dollar equivalent of $6 million.

Employee Benefits

Employee Benefits	9 Months Ended
	Sep. 26, 2020
Retirement Benefits [Abstract]
Employee Benefits	Employee benefitsThe Company sponsors a number of U.S. and foreign pension plans as well as other nonpension postretirement and postemployment plans to provide various benefits for its employees. These plans are described within the footnotes to the Consolidated Financial Statements included in the Company’s 2019 Annual Report on Form 10-K. Components of Company plan benefit expense for the periods presented are included in the tables below. Pension Quarter ended Year-to-date period ended (millions) September 26, 2020 September 28, 2019 September 26, 2020 September 28, 2019 Service cost $ 9 $ 9 $ 27 $ 27 Interest cost 31 42 99 131 Expected return on plan assets (87) (86) (257) (254) Amortization of unrecognized prior service cost 1 1 5 5 Recognized net (gain) loss 7 23 64 34 Net periodic benefit cost $ (39) $ (11) $ (62) $ (57) Curtailment (gain) loss — (11) (7) (11) Total pension (income) expense $ (39) $ (22) $ (69) $ (68) Other nonpension postretirement Quarter ended Year-to-date period ended (millions) September 26, 2020 September 28, 2019 September 26, 2020 September 28, 2019 Service cost $ 2 $ 5 $ 9 $ 12 Interest cost 7 10 23 30 Expected return on plan assets (24) (23) (70) (65) Amortization of unrecognized prior service cost (1) (2) (6) (6) Recognized net (gain) loss — (55) — (55) Net periodic benefit cost (16) (65) (44) (84) Curtailment (gain) loss — (6) — (6) Total postretirement benefit (income) expense $ (16) $ (71) $ (44) $ (90) Postemployment Quarter ended Year-to-date period ended (millions) September 26, 2020 September 28, 2019 September 26, 2020 September 28, 2019 Service cost $ 1 $ 1 $ 3 $ 3 Interest cost 1 — 1 1 Recognized net (gain) loss — (1) (2) (3) Total postemployment benefit expense $ 2 $ — $ 2 $ 1 For the quarter and year-to-date periods ended September 26, 2020, the Company recognized a loss of $7 million and $15 million, respectively, related to the remeasurement of a U.S. pension plan as current year distributions are expected to exceed service and interest costs resulting in settlement accounting for that particul ar plan. The amount of the remeasurement recognized was due primarily to changes in the discount rate relative to the previous measurement. During the second quarter of 2020, the Company recognized a curtailment gain of $7 million, as certain U.S. pension plan benefits were frozen for a portion of the population. The Company remeasured the benefit obligation for the impacted pension plan, resulting in a mark-to-market loss of $49 million. T he loss was due primarily to a lower discount rate partially offset by plan asset returns in excess of the expected rate of return. For the quarter and year-to-date periods ended September 28, 2019, the Company recognized a loss of $15 million and $26 million, respectively, related to the remeasurement of a U.S. pension plan as current year distributions were expected to exceed service and interest costs, resulting in settlement accounting for that particular plan. The amount of the remeasurement loss recognized was due primarily to an unfavorable change in the discount rate. In conjunction with the completion of the sale of selected cookies, fruit and fruit-flavored snacks, pie crusts, and ice cream cones businesses on July 28, 2019, the Company recognized curtailment gains in its U.S. pension and nonpension postretirement plans of $11 million and $6 million, respectively, during the third quarter of 2019. Additionally, the Company was required to remeasure those plans. The Company recorded a mark-to-market loss of $8 million in our U.S. pension plan due to a lower discount rate and a reduction of the expected return on assets from 7.5% to 7.0% based on an updated target portfolio mix. These decreases were partially offset by better than expected asset returns. We recorded a mark-to-market gain of $55 million related to the remeasurement of a U.S. nonpension postretirement plan as a result of better than expected asset returns, partially offset by a lower discount rate and a reduction of the expected return on assets from 7.5% to 7.0% based on an updated target portfolio mix. Company contributions to employee benefit plans are summarized as follows: (millions) Pension Nonpension postretirement Total Quarter ended: September 26, 2020 $ 1 $ 6 $ 7 September 28, 2019 $ 2 $ 5 $ 7 Year-to-date period ended: September 26, 2020 $ 4 $ 15 $ 19 September 28, 2019 $ 6 $ 13 $ 19 Full year: Fiscal year 2020 (projected) $ 7 $ 19 $ 26 Fiscal year 2019 (actual) $ 10 $ 18 $ 28 Plan funding strategies may be modified in response to management's evaluation of tax deductibility, market conditions, and competing investment alternatives. M ulti-employer pension plan exit liability During the third quarter of 2019, the Company incurred a pre-tax charge of $132 million due to withdrawing from two multi-employer pension plans. The cash obligation was originally estimated to be approximately $8 million annually for 20 years. The net present value of the liability was determined using a risk free interest rate. The charge was recorded within COGS on the Consolidated Statement of Income and Other current liabilities and Other liabilities on the Consolidated Balance Sheet. During the second quarter of 2020, the Company adjusted the estimated withdrawal liability associated with a plan withdrawn from during the third quarter of 2019. The adjustment resulted in a gain of $5 million during the second quarter and resulted from a July 2020 agreement with the plan under which the Company paid $7 million in full settlement of the withdrawal liability.

Income Taxes

Income Taxes	9 Months Ended
	Sep. 26, 2020
Income Tax Disclosure [Abstract]
Income Taxes	Income taxes The consolidated effective tax rate for the quarter ended September 26, 2020 and September 28, 2019 was 16% and 27%, respectively. The effective tax rate for the quarter was favorably impacted by the reversal of a liability for un certain tax positions of $32 million, resulting from the finalization of a tax examination. The reserves were related to the Company's estimate of the transition tax liability in conjunction with the finalization of accounting under Staff Accounting Bulletin No. 118, Income Tax Accounting Implications of the Tax Cuts and Jobs Act. The consolidated effective tax rate for the year-to-date periods ended September 26, 2020 and September 28, 2019 was 20% a nd 22%, respec tively. The effective tax rate for the year-to-date period was favorably impacted by the reversal of the liability noted above. As of September 26, 2020, the Company classified $16 million of unrecognized tax benefits as a net current tax liability. Management's estimate of reasonably possible changes in unrecognized tax benefits during the next twelve months consists of the current liability expected to be settled within one year, offset by approximately $3 million of projected additions related primarily to ongoing intercompany transfer pricing activity. Management is currently unaware of any issues under review that could result in significant additional payments, accruals or other material deviation in this estimate. The Company’s total gross unrecognized tax benefits as of September 26, 2020 was $62 million. Of this balance, $53 million represents the amount that, if recognized, would affect the Company’s effective income tax rate in future periods. December 28, 2019 $ 90 Tax positions related to current year: Additions 3 Reductions — Tax positions related to prior years: Additions 5 Reductions (34) Settlements (2) Lapse in statute of limitations — September 26, 2020 $ 62

Derivative Instruments and Fair

Derivative Instruments and Fair Value Measurements	9 Months Ended
	Sep. 26, 2020
Derivative Instruments and Fair Value Measurements [Abstract]
Derivative Instruments and Fair Value Measurements	Derivative instruments and fair value measurements The Company is exposed to certain market risks such as changes in interest rates, foreign currency exchange rates, and commodity prices, which exist as a part of its ongoing business operations. Management uses derivative and nonderivative financial instruments and commodity instruments, including futures, options, and swaps, where appropriate, to manage these risks. Instruments used as hedges must be effective at reducing the risk associated with the exposure being hedged. The Company designates derivatives and nonderivative hedging instruments as cash flow hedges, fair value hedges, net investment hedges, and uses other contracts to reduce volatility in interest rates, foreign currency and commodities. As a matter of policy, the Company does not engage in trading or speculative hedging transactions. Derivative instruments are classified on the Consolidated Balance Sheet based on the contractual maturity of the instrument or the timing of the underlying cash flows of the instrument for derivatives with contractual maturities beyond one year. Any collateral associated with derivative instruments is classified as other assets or other current liabilities on the Consolidated Balance Sheet depending on whether the counterparty collateral is in an asset or liability position. Margin deposits related to exchange-traded commodities are recorded in accounts receivable, net on the Consolidated Balance Sheet. On the Consolidated Statement of Cash Flows, cash flows associated with derivative instruments are classified according to the nature of the underlying hedged item. Cash flows associated with collateral and margin deposits on exchange-traded commodities are classified as investing cash flows when the collateral account is in an asset position and as financing cash flows when the collateral account is in a liability position. Total notional amounts of the Company’s derivative instruments as of September 26, 2020 and December 28, 2019 were as follows: (millions) September 26, December 28, Foreign currency exchange contracts $ 4,288 $ 2,628 Cross-currency contracts 1,556 1,540 Interest rate contracts 2,339 1,871 Commodity contracts 300 524 Total $ 8,483 $ 6,563 Following is a description of each category in the fair value hierarchy and the financial assets and liabilities of the Company that were included in each category at September 26, 2020 and December 28, 2019, measured on a recurring basis. Level 1 – Financial assets and liabilities whose values are based on unadjusted quoted prices for identical assets or liabilities in an active market. For the Company, level 1 financial assets and liabilities consist primarily of commodity derivative contracts. Level 2 – Financial assets and liabilities whose values are based on quoted prices in markets that are not active or model inputs that are observable either directly or indirectly for substantially the full term of the asset or liability. For the Company, level 2 financial assets and liabilities consist of interest rate swaps, cross-currency swaps and over-the-counter commodity and currency contracts. The Company’s calculation of the fair value of interest rate swaps is derived from a discounted cash flow analysis based on the terms of the contract and the interest rate curve. Over-the-counter commodity derivatives are valued using an income approach based on the commodity index prices less the contract rate multiplied by the notional amount. Foreign currency contracts are valued using an income approach based on forward rates less the contract rate multiplied by the notional amount. Cross-currency contracts are valued based on changes in the spot rate at the time of valuation compared to the spot rate at the time of execution, as well as the change in the interest differential between the two currencies. The Company’s calculation of the fair value of level 2 financial assets and liabilities takes into consideration the risk of nonperformance, including counterparty credit risk. Level 3 – Financial assets and liabilities whose values are based on prices or valuation techniques that require inputs that are both unobservable and significant to the overall fair value measurement. These inputs reflect management’s own assumptions about the assumptions a market participant would use in pricing the asset or liability. The Company did not have any level 3 financial assets or liabilities as of September 26, 2020 or December 28, 2019. The following table presents assets and liabilities that were measured at fair value in the Consolidated Balance Sheet on a recurring basis as of September 26, 2020 and December 28, 2019: Derivatives designated as hedging instruments September 26, 2020 December 28, 2019 (millions) Level 1 Level 2 Total Level 1 Level 2 Total Assets: Cross-currency contracts: Other current assets $ — $ 50 $ 50 $ — $ 45 $ 45 Other assets — 45 45 — 40 40 Interest rate contracts: Other current assets — — — — 7 7 Other assets (a) — 30 30 — 4 4 Total assets $ — $ 125 $ 125 $ — $ 96 $ 96 Liabilities: Cross-currency contracts: Other current liabilities $ — $ (5) $ (5) $ — $ — $ — Other Liabilities — (1) (1) — — — Interest rate contracts: Other current liabilities — (2) (2) — (4) (4) Other liabilities — (1) (1) — — — Total liabilities $ — $ (9) $ (9) $ — $ (4) $ (4) (a) The fair value of the related hedged portion of the Company's long-term debt, a level 2 liability, was $0.7 billion as of September 26, 2020 and December 28, 2019. Derivatives not designated as hedging instruments September 26, 2020 December 28, 2019 (millions) Level 1 Level 2 Total Level 1 Level 2 Total Assets: Foreign currency exchange contracts: Other current assets $ — $ 63 $ 63 $ — $ 12 $ 12 Other assets — 5 5 — — — Interest rate contracts: Other current assets — 4 4 — — — Other assets — 15 15 — — — Commodity contracts: Other current assets 2 — 2 9 — 9 Total assets $ 2 $ 87 $ 89 $ 9 $ 12 $ 21 Liabilities: Foreign currency exchange contracts: Other current liabilities $ — $ (47) $ (47) $ — $ (18) $ (18) Other liabilities — (7) (7) — — — Interest rate contracts: Other current liabilities — (6) (6) — — — Other liabilities — (25) (25) — (13) (13) Commodity contracts: Other current liabilities (1) — (1) (1) — (1) Total liabilities $ (1) $ (85) $ (86) $ (1) $ (31) $ (32) The Company has designated its outstanding foreign currency denominated debt as a net investment hedge of a portion of the Company’s investment in its subsidiaries’ foreign currency denominated net assets. The carrying value of this debt, including current and long-term, was approximately $2.7 billion as of September 26, 2020 and $2.6 billion as of December 28, 2019. The following amounts were recorded on the Consolidated Balance Sheet related to cumulative basis adjustments for existing fair value hedges as of September 26, 2020 and December 28, 2019. (millions) Line Item in the Consolidated Balance Sheet in which the hedged item is included Carrying amount of the hedged liabilities Cumulative amount of fair value hedging adjustment included in the carrying amount of the hedged liabilities (a) September 26, December 28, September 26, December 28, Interest rate contracts Current maturities of long-term debt $ 494 $ 493 $ — $ — Interest rate contracts Long-term debt $ 2,853 $ 2,643 $ 23 $ 19 (a) The hedged long-term debt includes $14 million and $15 million of hedging adjustment on discontinued hedging relationships as of September 26, 2020 and December 28, 2019, respectively. The Company has elected to not offset the fair values of derivative assets and liabilities executed with the same counterparty that are generally subject to enforceable netting agreements. However, if the Company were to offset and record the asset and liability balances of derivatives on a net basis, the amounts presented in the Consolidated Balance Sheet as of September 26, 2020 and December 28, 2019 would be adjusted as detailed in the following table: As of September 26, 2020: Gross Amounts Not Offset in the Amounts Financial Cash Collateral Net Total asset derivatives $ 214 $ (94) $ — $ 120 Total liability derivatives $ (95) $ 94 $ — $ (1) As of December 28, 2019: Gross Amounts Not Offset in the Amounts Financial Cash Collateral Net Total asset derivatives $ 117 $ (27) $ (7) $ 83 Total liability derivatives $ (36) $ 27 $ — $ (9) The effect of derivative instruments on the Consolidated Statements of Income and Comprehensive Income for the quarters ended September 26, 2020 and September 28, 2019 was as follows: Derivatives and non-derivatives in net investment hedging relationships (millions) Gain (loss) Gain (loss) excluded from assessment of hedge effectiveness Location of gain (loss) in income of excluded component September 26, September 28, September 26, September 28, Foreign currency denominated long-term debt $ (94) $ 99 $ — $ — Cross-currency contracts (61) 49 8 9 Interest expense Total $ (155) $ 148 $ 8 $ 9 Derivatives not designated as hedging instruments (millions) Location of gain Gain (loss) September 26, September 28, Foreign currency exchange contracts COGS $ (3) $ 7 Foreign currency exchange contracts Other income (expense), net (1) — Foreign currency exchange contracts SG&A (1) — Commodity contracts COGS 17 (21) Total $ 12 $ (14) The effect of derivative instruments on the Consolidated Statements of Income and Comprehensive Income for the year-to-date periods ended September 26, 2020 and September 28, 2019 was as follows: Derivatives and non-derivatives in net investment hedging relationships (millions) Gain (loss) Gain (loss) excluded from assessment of hedge effectiveness Location of gain (loss) in income of excluded component September 26, September 28, September 26, September 28, Foreign currency denominated long-term debt $ (103) $ 115 $ — $ — Cross-currency contracts 1 64 26 25 Interest expense Total $ (102) $ 179 $ 26 $ 25 Derivatives not designated as hedging instruments (millions) Location of gain Gain (loss) September 26, September 28, Foreign currency exchange contracts COGS $ 43 $ (3) Foreign currency exchange contracts Other income (expense), net 5 (1) Foreign currency exchange contracts SGA 3 — Interest rate contracts Interest expense 1 — Commodity contracts COGS (33) (13) Total $ 19 $ (17) The effect of fair value and cash flow hedge accounting on the Consolidated Income Statement for the quarters ended September 26, 2020 and September 28, 2019: September 26, 2020 September 28, 2019 (millions) Interest Expense Interest Expense Total amounts of income and expense line items presented in the Consolidated Income Statement in which the effects of fair value or cash flow hedges are recorded $ 63 $ 72 Gain (loss) on fair value hedging relationships: Interest contracts: Hedged items (2) (5) Derivatives designated as hedging instruments 2 7 Gain (loss) on cash flow hedging relationships: Interest contracts: Amount of gain (loss) reclassified from AOCI into income (4) 1 The effect of fair value and cash flow hedge accounting on the Consolidated Income Statement for the year-to-date periods ended September 26, 2020 and September 28, 2019: September 26, 2020 September 28, 2019 (millions) Interest Expense Interest Expense Total amounts of income and expense line items presented in the Consolidated Income Statement in which the effects of fair value or cash flow hedges are recorded $ 196 $ 221 Gain (loss) on fair value hedging relationships: Interest contracts: Hedged items (5) (42) Derivatives designated as hedging instruments 6 44 Gain (loss) on cash flow hedging relationships: Interest contracts: Amount of gain (loss) reclassified from AOCI into income (11) (2) During the next 12 months, the Company expects $16 million of net deferred losses reported in AOCI at September 26, 2020 to be reclassified to income, assuming market rates remain constant through contract maturities. Certain of the Company’s derivative instruments contain provisions requiring the Company to post collateral on those derivative instruments that are in a liability position if the Company’s credit rating is at or below BB+ (S&P), or Baa1 (Moody’s). The fair value of all derivative instruments with credit-risk-related contingent features in a liability position on September 26, 2020 was not material. In addition, certain derivative instruments contain provisions that would be triggered in the event the Company defaults on its debt agreements. There were no collateral posting as of September 26, 2020 triggered by credit-risk-related contingent features. Other fair value measurements Marketable securities During the quarter and year-to-date periods ended September 26, 2020, the Company invested $50 million and $250 million, respectively, in a mutual fund holding short term debt securities. The investment is measured at fair value using the net asset value (NAV) per share as a practical expedient and as a result, this investment has not been classified in the fair value hierarchy. As of September 26, 2020, fair value using the NAV was $250 million. Available for sale securities September 26, 2020 December 28, 2019 Unrealized Unrealized (millions) Cost Gain (Loss) Market Value Cost Gain (Loss) Market Value Corporate bonds $ 62 $ 2 $ 64 $ — $ — $ — The market values of the Company's investments in level 2 corporate bonds were based on matrices or models from pricing vendors. Unrealized gains and losses were included in the Consolidated Statement of Comprehensive Income. Additionally, these investments were recorded within Other current assets and Other assets on the Consolidated Balance Sheet, based on the maturity of the individual security. The maturity dates of the securities range from 2020 to 2036. The Company reviews its investment portfolio for any unrealized losses that would be deemed other-than-temporary and requires the recognition of an impairment loss in earnings. If the cost of an investment exceeds its fair value, the Company evaluates, among other factors, general market conditions, the duration and extent to which the fair value is less than its cost, the Company's intent to hold the investment, and whether it is more likely than not that the Company will be required to sell the investment before recovery of the cost basis. The Company also considers the type of security, related industry and sector performance, and published investment ratings. Once a decline in fair value is determined to be other-than-temporary, an impairment charge is recorded and a new cost basis in the investment is established. If conditions within individual markets, industry segments, or macro-economic environments deteriorate, the Company could incur future impairments. Financial instruments The carrying values of the Company’s short-term items, including cash, cash equivalents, accounts receivable, accounts payable, notes payable and current maturities of long-term debt approximate fair value. The fair value of the Company’s long-term debt, which are level 2 liabilities, is calculated based on broker quotes. The fair value and carrying value of the Company's long-term debt was $7.9 billion and $7.0 billion, respectively, as of September 26, 2020. The fair value and carrying value of the Company's long-term debt were $7.8 billion and $7.2 billion, respectively, as of December 28, 2019. Counterparty credit risk concentration and collateral requirements The Company is exposed to credit loss in the event of nonperformance by counterparties on derivative financial and commodity contracts. Management believes a concentration of credit risk with respect to derivative counterparties is limited due to the credit ratings and use of master netting and reciprocal collateralization agreements with the counterparties and the use of exchange-traded commodity contracts. Master netting agreements apply in situations where the Company executes multiple contracts with the same counterparty. Certain counterparties represent a concentration of credit risk to the Company. If those counterparties fail to perform according to the terms of derivative contracts, this would result in a loss to the Company of approximately $96 million, net of collateral already received from those counterparties, as of September 26, 2020. For certain derivative contracts, reciprocal collateralization agreements with counterparties call for the posting of collateral in the form of cash, treasury securities or letters of credit if a fair value loss position to the Company or its counterparties exceeds a certain amount. In addition, the Company is required to maintain cash margin accounts in connection with its open positions for exchange-traded commodity derivative instruments executed with the counterparty that are subject to enforceable netting agreements. As of September 26, 2020, collateral related to reciprocal collateralization agreements and margin deposits for exchange-traded commodity derivative instruments, were immaterial. Management believes concentrations of credit risk with respect to accounts receivable is limited due to the generally high credit quality of the Company’s major customers, as well as the large number and geographic dispersion of smaller customers. However, the Company conducts a disproportionate amount of business with a small number of large multinational grocery retailers, with the five largest accounts encompassing approximately 22% of consolidated trade receivables at September 26, 2020.

Reportable Segments

Reportable Segments	9 Months Ended
	Sep. 26, 2020
Segment Reporting [Abstract]
Reportable Segments	Reportable segments Kellogg Company is the world’s leading producer of cereal, second largest producer of crackers, and a leading producer of savory snacks and frozen foods. Additional product offerings include toaster pastries, cereal bars, veggie foods and noodles. Kellogg products are manufactured and marketed globally. Principal markets for these products include the United States, United Kingdom, and Nigeria. The Company manages its operations through four operating segments that are based on geographic location – North America which includes U.S. businesses and Canada; Europe which consists principally of European countries; Latin America which consists of Central and South America and includes Mexico; and AMEA (Asia Middle East Africa) which consists of Africa, Middle East, Australia and other Asian and Pacific markets. These operating segments also represent our reportable segments. On July 28, 2019, the Company completed its sale of selected cookies, fruit and fruit-flavored snacks, pie crusts, and ice cream cones businesses to Ferrero for approximately $1.3 billion in cash. Both the total assets and net assets, consisting primarily of goodwill and intangibles, property, plant and equipment, and inventory, of the businesses were approximately $1.3 billion. The operating results for these businesses were primarily included in the North America reportable segment prior to the sale. Reported net sales for the divested businesses totaled $55 million and $562 million for the quarter and year-to-date periods ended September 28, 2019, respectively. The measurement of reportable segment results is based on segment operating profit which is generally consistent with the presentation of operating profit in the Consolidated Statement of Income. Reportable segment results were as follows: Quarter ended Year-to-date period ended (millions) September 26, September 28, September 26, September 28, Net sales North America $ 2,059 $ 2,059 $ 6,323 $ 6,496 Europe 552 527 1,624 1,566 Latin America 236 244 686 707 AMEA 582 542 1,673 1,586 Consolidated $ 3,429 $ 3,372 $ 10,306 $ 10,355 Operating profit North America $ 321 $ 208 $ 1,151 $ 910 Europe 63 68 224 164 Latin America 31 23 84 61 AMEA 58 53 142 145 Total Reportable Segments 473 352 1,601 1,280 Corporate (62) (89) (225) (239) Consolidated $ 411 $ 263 $ 1,376 $ 1,041 Supplemental product information is provided below for net sales to external customers: Quarter ended Year-to-date period ended (millions) September 26, September 28, September 26, September 28, Snacks* $ 1,593 $ 1,610 $ 4,669 $ 5,132 Cereal* 1,324 1,280 4,093 3,811 Frozen 279 260 857 786 Noodles and other 233 222 687 626 Consolidated $ 3,429 $ 3,372 $ 10,306 $ 10,355 * The year-to-date snacks and cereal net sales reflect the correction of an error in the Company’s first quarter 2020 disclosure. First quarter net sales for snacks was understated $229 million and net sales for cereal was overstated $229 million within the disclosure included in our previously issued first quarter financial statements. The revisions, which did not impact consolidated net sales, are not considered material to the first, second or third quarter 2020 financial statements.

Supplemental Financial Statemen

Supplemental Financial Statement Data	9 Months Ended
	Sep. 26, 2020
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Supplemental Balance Sheet Disclosures [Text Block]	Supplemental Financial Statement Data Consolidated Balance Sheet (millions) September 26, 2020 (unaudited) December 28, 2019 Trade receivables $ 1,414 $ 1,315 Allowance for doubtful accounts (22) (10) Refundable income taxes 17 56 Other receivables 217 215 Accounts receivable, net $ 1,626 $ 1,576 Raw materials and supplies $ 334 $ 303 Finished goods and materials in process 929 923 Inventories $ 1,263 $ 1,226 Property $ 9,100 $ 9,051 Accumulated depreciation (5,616) (5,439) Property, net $ 3,484 $ 3,612 Pension $ 298 $ 241 Deferred income taxes 219 231 Nonpension postretirement benefits 328 283 Other 507 384 Other assets $ 1,352 $ 1,139 Accrued income taxes $ 29 $ 42 Accrued salaries and wages 316 290 Other 780 577 Other current liabilities $ 1,125 $ 909 Income taxes payable $ 54 $ 81 Nonpension postretirement benefits 32 33 Other 434 429 Other liabilities $ 520 $ 543

Contingencies

Contingencies	9 Months Ended
	Sep. 26, 2020
Loss Contingency [Abstract]
Contingencies	Contingencies The Company is subject to various legal proceedings, claims, and governmental inspections or investigations in the ordinary course of business covering matters such as general commercial, governmental regulations, antitrust and trade regulations, product liability, environmental, intellectual property, workers’ compensation, employment and other actions. These matters are subject to uncertainty and the outcome is not predictable with assurance. The Company uses a combination of insurance and self-insurance for a number of risks, including workers’ compensation, general liability, automobile liability and product liability. In 2016, a class action complaint was filed against Kellogg in the Northern District of California relating to statements made on packaging for certain products. In August 2019, the Court ruled in favor of the plaintiff regarding certain statements made on the Company’s products and ordered the parties to conduct settlement discussions related to all matters in dispute. In October 2019, the plaintiff filed a motion to the Court to approve a settlement between Kellogg and the class. During 2019, the Company concluded that the contingency related to the unfavorable ruling was probable and estimable, resulting in a liability being recorded. In February 2020, the Court denied plaintiff’s motion to approve the settlement and the parties are continuing arbitration. This litigation, including any potential settlement, is not expected to have a material impact on the Company’s consolidated financial statements. The Company will continue to evaluate the likelihood of potential outcomes as the litigation continues. The Company has established accruals for certain matters where losses are deemed probable and reasonably estimable. There are other claims and legal proceedings pending against the Company for which accruals have not been established. It is reasonably possible that some of these matters could result in an unfavorable judgment against the Company and could require payment of claims in amounts that cannot be estimated at September 26, 2020. Based upon current information, management does not expect any of the claims or legal proceedings pending against the Company to have a material impact on the Company’s consolidated financial statements.

Subsequent Event

Subsequent Event	9 Months Ended
	Sep. 26, 2020
Subsequent Events [Abstract]
Subsequent Events	Subsequent eventsDuring October of 2020, the Company settled obligations associated with approximately 8,000 retired participants within our U.S. defined benefit pension plan to reduce pension obligations and administrative expenses. A group annuity contract was purchased on behalf of these participants with a third-party insurance provider resulting in a reduction of the Company's pension benefit obligations and plan assets of approximately $470 million.

Accounting Policies (Policies)

Accounting Policies (Policies)	9 Months Ended
	Sep. 26, 2020
Accounting Policies [Abstract]
Basis of presentation	Basis of presentation The unaudited interim financial information of Kellogg Company (the Company) included in this report reflects all adjustments, all of which are of a normal and recurring nature, that management believes are necessary for a fair statement of the results of operations, comprehensive income, financial position, equity and cash flows for the periods presented. This interim information should be read in conjunction with the financial statements and accompanying footnotes within the Company’s 2019 Annual Report on Form 10-K. The condensed balance sheet information at December 28, 2019 was derived from audited financial statements, but does not include all disclosures required by accounting principles generally accepted in the United States. The results of operations for the quarter ended September 26, 2020 are not necessarily indicative of the results to be expected for other interim periods or the full year. During the quarter ended September 26, 2020, the Company began to recognize an estimate of certain customer allowances at the time of sale in accordance with ASC 606, resulting in an out-of-period adjustment of $14 million decreasing net sales and accounts receivable. The Company determined the adjustment to be immaterial to current and previously issued financial statements.
Accounts payable	Accounts payableThe Company has agreements with certain third parties to provide accounts payable tracking systems which facilitates participating suppliers’ ability to monitor and, if elected, sell payment obligations from the Company to designated third-party financial institutions. Participating suppliers may, at their sole discretion, make offers to sell one or more payment obligations of the Company prior to their scheduled due dates at a discounted price to participating financial institutions. The Company’s goal in entering into these agreements is to capture overall supplier savings, in the form of payment terms or vendor funding, created by facilitating suppliers’ ability to sell payment obligations, while providing them with greater working capital flexibility. We have no economic interest in the sale of these suppliers’ receivables and no direct financial relationship with the financial institutions concerning these services. The Company’s obligations to its suppliers, including amounts due and scheduled payment dates, are not impacted by suppliers’ decisions to sell amounts under these arrangements. However, the Company’s right to offset balances due from suppliers against payment obligations is restricted by this agreement for those payment obligations that have been sold by suppliers.
New accounting standards adopted and accounting standards to be adopted in future periods	Adoption of new accounting standards Cloud Computing Arrangements . In August 2018, the FASB issued ASU 2018-15: Intangibles - Goodwill and Other - Internal-Use Software: Customer's Accounting for Implementation Costs Incurred in a Cloud Computing Arrangement that is a Service Contract. The ASU allows companies to capitalize implementation costs incurred in a hosting arrangement that is a service contract over the term of the hosting arrangement, including periods covered by renewal options that are reasonably certain to be exercised. The ASU is effective for fiscal years, and interim periods within those years, beginning after December 15, 2019 and can be applied retrospectively or prospectively. Early adoption is permitted. The Company adopted the ASU in the first quarter of 2020 and elected to apply it prospectively. The adoption did not have a material impact to the Company's Consolidated Financial Statements. Accounting standards to be adopted in future periods Compensation Retirement Benefits. In August 2018, the FASB issued ASU 2018-14: Disclosure Framework—Changes to the Disclosure Requirements for Defined Benefit Plans. The ASU removed disclosures that no longer are considered cost beneficial, clarified the specific requirements of disclosures, and added disclosure requirements identified as relevant. The ASU is effective for fiscal years, and interim periods within those years, beginning after December 15, 2020 and can be applied retrospectively or prospectively. Early adoption is permitted. The Company is currently assessing when to adopt the ASU and the impact of adoption.

Goodwill and Other Intangible_2

Goodwill and Other Intangible Assets (Tables)	9 Months Ended
	Sep. 26, 2020
Goodwill and Intangible Assets Disclosure [Abstract]
Carrying Amount of Goodwill	Carrying amount of goodwill (millions) North Europe Latin AMEA Consoli- December 28, 2019 $ 4,422 $ 347 $ 213 $ 879 $ 5,861 Currency translation adjustment (1) — (44) (36) (81) September 26, 2020 $ 4,421 $ 347 $ 169 $ 843 $ 5,780
Intangible Assets Subject to Amortization	Intangible assets subject to amortization Gross carrying amount (millions) North Europe Latin AMEA Consoli- December 28, 2019 $ 64 $ 41 $ 60 $ 429 $ 594 Currency translation adjustment — — (16) (24) (40) September 26, 2020 $ 64 $ 41 $ 44 $ 405 $ 554 Accumulated Amortization December 28, 2019 $ 31 $ 21 $ 15 $ 34 $ 101 Amortization 3 3 2 13 21 Currency translation adjustment — — (4) (2) (6) September 26, 2020 $ 34 $ 24 $ 13 $ 45 $ 116 Intangible assets subject to amortization, net December 28, 2019 $ 33 $ 20 $ 45 $ 395 $ 493 Amortization (3) (3) (2) (13) (21) Currency translation adjustment — — (12) (22) (34) September 26, 2020 $ 30 $ 17 $ 31 $ 360 $ 438
Intangible Assets Not Subject to Amortization	Intangible assets not subject to amortization (millions) North Europe Latin AMEA Consoli- December 28, 2019 $ 1,238 $ 392 $ 70 $ 383 $ 2,083 Currency translation adjustment — 17 (19) (21) (23) September 26, 2020 $ 1,238 $ 409 $ 51 $ 362 $ 2,060

Restructuring Programs (Tables)

Restructuring Programs (Tables)	9 Months Ended
	Sep. 26, 2020
Restructuring and Related Activities [Abstract]
Schedule of Restructuring and Cost Reduction Activities	Quarter ended Year-to-date period ended Program costs to date (millions) September 26, 2020 September 28, 2019 September 26, 2020 September 28, 2019 September 26, 2020 Employee related costs $ — $ (1) $ 13 $ 41 $ 63 Pension curtailment (gain) loss, net — — — — (5) Asset related costs — 5 — 15 — Other costs — 14 2 35 16 Total $ — $ 18 $ 15 $ 91 $ 74 Quarter ended Year-to-date period ended Program costs to date (millions) September 26, 2020 September 28, 2019 September 26, 2020 September 28, 2019 September 26, 2020 North America $ — $ 13 $ (2) $ 45 $ 19 Europe — 1 3 35 41 Latin America — 4 4 8 4 AMEA — — 8 3 8 Corporate — — 2 — 2 Total $ — $ 18 $ 15 $ 91 $ 74
Schedule of Exit Cost Reserves	The following table provides details for exit cost reserves related to the reorganizations described above. Employee Pension curtailment (gain) loss, net Other Total Liability as of December 28, 2019 $ 37 $ — $ 1 $ 38 2020 restructuring charges 13 — 2 15 Cash payments (28) — (3) (31) Non-cash charges and other — — — — Liability as of September 26, 2020 $ 22 $ — $ — $ 22

Equity (Tables)

Equity (Tables)	9 Months Ended
	Sep. 26, 2020
Equity [Abstract]
Reclassifications Out of AOCI	Reclassifications out of Accumulated other comprehensive income (AOCI) for the quarter and year-to-date periods ended September 26, 2020 and September 28, 2019, consisted of the following: (millions) Details about AOCI Amount reclassified Line item impacted Quarter ended Year-to-date period ended (Gains) losses on cash flow hedges: Interest rate contracts $ 4 $ 11 Interest expense $ 4 $ 11 Total before tax (1) (3) Tax expense (benefit) $ 3 $ 8 Net of tax Amortization of postretirement and postemployment benefits: Net experience (gain) loss $ — $ (2) OIE Prior service cost — (1) See Note 9 for further details $ — $ (3) Total before tax — 1 Tax expense (benefit) $ — $ (2) Net of tax Total reclassifications $ 3 $ 6 Net of tax (millions) Details about AOCI Amount reclassified Line item impacted Quarter ended Year-to-date period ended (Gains) losses on cash flow hedges: Interest rate contracts $ (1) $ 2 Interest expense $ (1) $ 2 Total before tax — (1) Tax expense (benefit) $ (1) $ 1 Net of tax Amortization of postretirement and postemployment benefits: Net experience loss $ (1) $ (3) See Note 9 for further details $ (1) $ (3) Total before tax — 1 Tax expense (benefit) $ (1) $ (2) Net of tax (Gain) loss on available-for-sale securities: Corporate bonds $ (4) $ (4) OIE $ (4) $ (4) Total before tax — — Tax expense (benefit) $ (4) $ (4) Net of tax Total reclassifications $ (6) $ (5) Net of tax
Summary of Accumulated Other Comprehensive Income (Loss)	Accumulated other comprehensive income (loss), net of tax, as of September 26, 2020 and December 28, 2019 consisted of the following: (millions) September 26, December 28, Foreign currency translation adjustments $ (1,688) $ (1,399) Cash flow hedges — unrealized net gain (loss) (80) (60) Postretirement and postemployment benefits: Net experience gain (loss) 6 7 Prior service credit (cost) 3 4 Available-for-sale securities unrealized net gain (loss) 2 — Total accumulated other comprehensive income (loss) $ (1,757) $ (1,448)

Notes payable and long-term d_2

Notes payable and long-term debt (Tables)	9 Months Ended
	Sep. 26, 2020
Debt Disclosure [Abstract]
Components of Notes Payable	The following table presents the components of notes payable at September 26, 2020 and December 28, 2019: September 26, 2020 December 28, 2019 (millions) Principal Effective Principal Effective U.S. commercial paper $ — — % $ 3 1.78 % Bank borrowings 116 104 Total $ 116 $ 107

Stock Compensation (Tables)

Stock Compensation (Tables)	9 Months Ended
	Sep. 26, 2020
Share-based Payment Arrangement [Abstract]
Schedule of Compensation Expense for Equity-Based Programs and Related Income Tax Benefits	For the periods presented, compensation expense for all types of equity-based programs and the related income tax benefit recognized was as follows: Quarter ended Year-to-date period ended (millions) September 26, 2020 September 28, 2019 September 26, 2020 September 28, 2019 Pre-tax compensation expense $ 18 $ 14 $ 59 $ 46 Related income tax benefit $ 5 $ 4 $ 16 $ 12

Employee Benefits (Tables)

Employee Benefits (Tables)	9 Months Ended
	Sep. 26, 2020
Retirement Benefits [Abstract]
Components of Plan Benefit Expense	Pension Quarter ended Year-to-date period ended (millions) September 26, 2020 September 28, 2019 September 26, 2020 September 28, 2019 Service cost $ 9 $ 9 $ 27 $ 27 Interest cost 31 42 99 131 Expected return on plan assets (87) (86) (257) (254) Amortization of unrecognized prior service cost 1 1 5 5 Recognized net (gain) loss 7 23 64 34 Net periodic benefit cost $ (39) $ (11) $ (62) $ (57) Curtailment (gain) loss — (11) (7) (11) Total pension (income) expense $ (39) $ (22) $ (69) $ (68) Other nonpension postretirement Quarter ended Year-to-date period ended (millions) September 26, 2020 September 28, 2019 September 26, 2020 September 28, 2019 Service cost $ 2 $ 5 $ 9 $ 12 Interest cost 7 10 23 30 Expected return on plan assets (24) (23) (70) (65) Amortization of unrecognized prior service cost (1) (2) (6) (6) Recognized net (gain) loss — (55) — (55) Net periodic benefit cost (16) (65) (44) (84) Curtailment (gain) loss — (6) — (6) Total postretirement benefit (income) expense $ (16) $ (71) $ (44) $ (90) Postemployment Quarter ended Year-to-date period ended (millions) September 26, 2020 September 28, 2019 September 26, 2020 September 28, 2019 Service cost $ 1 $ 1 $ 3 $ 3 Interest cost 1 — 1 1 Recognized net (gain) loss — (1) (2) (3) Total postemployment benefit expense $ 2 $ — $ 2 $ 1
Contributions to Employee Benefit Plans	Company contributions to employee benefit plans are summarized as follows: (millions) Pension Nonpension postretirement Total Quarter ended: September 26, 2020 $ 1 $ 6 $ 7 September 28, 2019 $ 2 $ 5 $ 7 Year-to-date period ended: September 26, 2020 $ 4 $ 15 $ 19 September 28, 2019 $ 6 $ 13 $ 19 Full year: Fiscal year 2020 (projected) $ 7 $ 19 $ 26 Fiscal year 2019 (actual) $ 10 $ 18 $ 28

Income Taxes (Tables)

Income Taxes (Tables)	9 Months Ended
	Sep. 26, 2020
Income Tax Disclosure [Abstract]
Reconciliation of total gross unrecognized tax benefits	December 28, 2019 $ 90 Tax positions related to current year: Additions 3 Reductions — Tax positions related to prior years: Additions 5 Reductions (34) Settlements (2) Lapse in statute of limitations — September 26, 2020 $ 62

Derivative Instruments and Fa_2

Derivative Instruments and Fair Value Measurements (Tables)	9 Months Ended
	Sep. 26, 2020
Derivative Instruments and Fair Value Measurements [Abstract]
Schedule of Total Notional Amounts of Derivative Instruments	Total notional amounts of the Company’s derivative instruments as of September 26, 2020 and December 28, 2019 were as follows: (millions) September 26, December 28, Foreign currency exchange contracts $ 4,288 $ 2,628 Cross-currency contracts 1,556 1,540 Interest rate contracts 2,339 1,871 Commodity contracts 300 524 Total $ 8,483 $ 6,563
Schedule of Fair Value, Assets and Liabilities Measured on Recurring Basis [Table Text Block]	The following table presents assets and liabilities that were measured at fair value in the Consolidated Balance Sheet on a recurring basis as of September 26, 2020 and December 28, 2019: Derivatives designated as hedging instruments September 26, 2020 December 28, 2019 (millions) Level 1 Level 2 Total Level 1 Level 2 Total Assets: Cross-currency contracts: Other current assets $ — $ 50 $ 50 $ — $ 45 $ 45 Other assets — 45 45 — 40 40 Interest rate contracts: Other current assets — — — — 7 7 Other assets (a) — 30 30 — 4 4 Total assets $ — $ 125 $ 125 $ — $ 96 $ 96 Liabilities: Cross-currency contracts: Other current liabilities $ — $ (5) $ (5) $ — $ — $ — Other Liabilities — (1) (1) — — — Interest rate contracts: Other current liabilities — (2) (2) — (4) (4) Other liabilities — (1) (1) — — — Total liabilities $ — $ (9) $ (9) $ — $ (4) $ (4) (a) The fair value of the related hedged portion of the Company's long-term debt, a level 2 liability, was $0.7 billion as of September 26, 2020 and December 28, 2019. Derivatives not designated as hedging instruments September 26, 2020 December 28, 2019 (millions) Level 1 Level 2 Total Level 1 Level 2 Total Assets: Foreign currency exchange contracts: Other current assets $ — $ 63 $ 63 $ — $ 12 $ 12 Other assets — 5 5 — — — Interest rate contracts: Other current assets — 4 4 — — — Other assets — 15 15 — — — Commodity contracts: Other current assets 2 — 2 9 — 9 Total assets $ 2 $ 87 $ 89 $ 9 $ 12 $ 21 Liabilities: Foreign currency exchange contracts: Other current liabilities $ — $ (47) $ (47) $ — $ (18) $ (18) Other liabilities — (7) (7) — — — Interest rate contracts: Other current liabilities — (6) (6) — — — Other liabilities — (25) (25) — (13) (13) Commodity contracts: Other current liabilities (1) — (1) (1) — (1) Total liabilities $ (1) $ (85) $ (86) $ (1) $ (31) $ (32)
Schedule of Derivative Instruments in Statement of Financial Position Fair Value	The following amounts were recorded on the Consolidated Balance Sheet related to cumulative basis adjustments for existing fair value hedges as of September 26, 2020 and December 28, 2019. (millions) Line Item in the Consolidated Balance Sheet in which the hedged item is included Carrying amount of the hedged liabilities Cumulative amount of fair value hedging adjustment included in the carrying amount of the hedged liabilities (a) September 26, December 28, September 26, December 28, Interest rate contracts Current maturities of long-term debt $ 494 $ 493 $ — $ — Interest rate contracts Long-term debt $ 2,853 $ 2,643 $ 23 $ 19 (a) The hedged long-term debt includes $14 million and $15 million of hedging adjustment on discontinued hedging relationships as of September 26, 2020 and December 28, 2019, respectively.
Schedule of Offsetting Assets	As of September 26, 2020: Gross Amounts Not Offset in the Amounts Financial Cash Collateral Net Total asset derivatives $ 214 $ (94) $ — $ 120 Total liability derivatives $ (95) $ 94 $ — $ (1) As of December 28, 2019: Gross Amounts Not Offset in the Amounts Financial Cash Collateral Net Total asset derivatives $ 117 $ (27) $ (7) $ 83 Total liability derivatives $ (36) $ 27 $ — $ (9)
Schedule of Offsetting Liabilities	As of September 26, 2020: Gross Amounts Not Offset in the Amounts Financial Cash Collateral Net Total asset derivatives $ 214 $ (94) $ — $ 120 Total liability derivatives $ (95) $ 94 $ — $ (1) As of December 28, 2019: Gross Amounts Not Offset in the Amounts Financial Cash Collateral Net Total asset derivatives $ 117 $ (27) $ (7) $ 83 Total liability derivatives $ (36) $ 27 $ — $ (9)
Schedule of the Effect of Derivative Instruments on the Consolidated Statements of Income and Comprehensive Income	The effect of derivative instruments on the Consolidated Statements of Income and Comprehensive Income for the quarters ended September 26, 2020 and September 28, 2019 was as follows: Derivatives and non-derivatives in net investment hedging relationships (millions) Gain (loss) Gain (loss) excluded from assessment of hedge effectiveness Location of gain (loss) in income of excluded component September 26, September 28, September 26, September 28, Foreign currency denominated long-term debt $ (94) $ 99 $ — $ — Cross-currency contracts (61) 49 8 9 Interest expense Total $ (155) $ 148 $ 8 $ 9 Derivatives not designated as hedging instruments (millions) Location of gain Gain (loss) September 26, September 28, Foreign currency exchange contracts COGS $ (3) $ 7 Foreign currency exchange contracts Other income (expense), net (1) — Foreign currency exchange contracts SG&A (1) — Commodity contracts COGS 17 (21) Total $ 12 $ (14) The effect of derivative instruments on the Consolidated Statements of Income and Comprehensive Income for the year-to-date periods ended September 26, 2020 and September 28, 2019 was as follows: Derivatives and non-derivatives in net investment hedging relationships (millions) Gain (loss) Gain (loss) excluded from assessment of hedge effectiveness Location of gain (loss) in income of excluded component September 26, September 28, September 26, September 28, Foreign currency denominated long-term debt $ (103) $ 115 $ — $ — Cross-currency contracts 1 64 26 25 Interest expense Total $ (102) $ 179 $ 26 $ 25 Derivatives not designated as hedging instruments (millions) Location of gain Gain (loss) September 26, September 28, Foreign currency exchange contracts COGS $ 43 $ (3) Foreign currency exchange contracts Other income (expense), net 5 (1) Foreign currency exchange contracts SGA 3 — Interest rate contracts Interest expense 1 — Commodity contracts COGS (33) (13) Total $ 19 $ (17) The effect of fair value and cash flow hedge accounting on the Consolidated Income Statement for the quarters ended September 26, 2020 and September 28, 2019: September 26, 2020 September 28, 2019 (millions) Interest Expense Interest Expense Total amounts of income and expense line items presented in the Consolidated Income Statement in which the effects of fair value or cash flow hedges are recorded $ 63 $ 72 Gain (loss) on fair value hedging relationships: Interest contracts: Hedged items (2) (5) Derivatives designated as hedging instruments 2 7 Gain (loss) on cash flow hedging relationships: Interest contracts: Amount of gain (loss) reclassified from AOCI into income (4) 1 The effect of fair value and cash flow hedge accounting on the Consolidated Income Statement for the year-to-date periods ended September 26, 2020 and September 28, 2019: September 26, 2020 September 28, 2019 (millions) Interest Expense Interest Expense Total amounts of income and expense line items presented in the Consolidated Income Statement in which the effects of fair value or cash flow hedges are recorded $ 196 $ 221 Gain (loss) on fair value hedging relationships: Interest contracts: Hedged items (5) (42) Derivatives designated as hedging instruments 6 44 Gain (loss) on cash flow hedging relationships: Interest contracts: Amount of gain (loss) reclassified from AOCI into income (11) (2)
Available-for-sale securities	Available for sale securities September 26, 2020 December 28, 2019 Unrealized Unrealized (millions) Cost Gain (Loss) Market Value Cost Gain (Loss) Market Value Corporate bonds $ 62 $ 2 $ 64 $ — $ — $ —

Reportable Segments (Tables)

Reportable Segments (Tables)	9 Months Ended
	Sep. 26, 2020
Segment Reporting [Abstract]
Schedule of Reportable Segment Information	Reportable segment results were as follows: Quarter ended Year-to-date period ended (millions) September 26, September 28, September 26, September 28, Net sales North America $ 2,059 $ 2,059 $ 6,323 $ 6,496 Europe 552 527 1,624 1,566 Latin America 236 244 686 707 AMEA 582 542 1,673 1,586 Consolidated $ 3,429 $ 3,372 $ 10,306 $ 10,355 Operating profit North America $ 321 $ 208 $ 1,151 $ 910 Europe 63 68 224 164 Latin America 31 23 84 61 AMEA 58 53 142 145 Total Reportable Segments 473 352 1,601 1,280 Corporate (62) (89) (225) (239) Consolidated $ 411 $ 263 $ 1,376 $ 1,041
Revenue from External Customers by Products and Services	Supplemental product information is provided below for net sales to external customers: Quarter ended Year-to-date period ended (millions) September 26, September 28, September 26, September 28, Snacks* $ 1,593 $ 1,610 $ 4,669 $ 5,132 Cereal* 1,324 1,280 4,093 3,811 Frozen 279 260 857 786 Noodles and other 233 222 687 626 Consolidated $ 3,429 $ 3,372 $ 10,306 $ 10,355 * The year-to-date snacks and cereal net sales reflect the correction of an error in the Company’s first quarter 2020 disclosure. First quarter net sales for snacks was understated $229 million and net sales for cereal was overstated $229 million within the disclosure included in our previously issued first quarter financial statements. The revisions, which did not impact consolidated net sales, are not considered material to the first, second or third quarter 2020 financial statements.

Supplemental Financial Statem_2

Supplemental Financial Statement Data (Tables)	9 Months Ended
	Sep. 26, 2020
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Supplemental Financial Data Consolidated Balance Sheet [Table Text Block]	Consolidated Balance Sheet (millions) September 26, 2020 (unaudited) December 28, 2019 Trade receivables $ 1,414 $ 1,315 Allowance for doubtful accounts (22) (10) Refundable income taxes 17 56 Other receivables 217 215 Accounts receivable, net $ 1,626 $ 1,576 Raw materials and supplies $ 334 $ 303 Finished goods and materials in process 929 923 Inventories $ 1,263 $ 1,226 Property $ 9,100 $ 9,051 Accumulated depreciation (5,616) (5,439) Property, net $ 3,484 $ 3,612 Pension $ 298 $ 241 Deferred income taxes 219 231 Nonpension postretirement benefits 328 283 Other 507 384 Other assets $ 1,352 $ 1,139 Accrued income taxes $ 29 $ 42 Accrued salaries and wages 316 290 Other 780 577 Other current liabilities $ 1,125 $ 909 Income taxes payable $ 54 $ 81 Nonpension postretirement benefits 32 33 Other 434 429 Other liabilities $ 520 $ 543

Accounting Policies - Narrative

Accounting Policies - Narrative (Details) - USD ($) $ in Millions	3 Months Ended
	Sep. 26, 2020	Dec. 28, 2019
Accounting Policies [Abstract]
Obligations placed in accounts payable tracking system	$ 893	$ 812
Obligations sold by participating suppliers	651	$ 605
Sales | Trade Accounts Receivable
Prior Period Reclassification Adjustment	$ 14

Sale of Accounts Receivable - N

Sale of Accounts Receivable - Narrative (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 26, 2020	Sep. 28, 2019	Sep. 26, 2020	Sep. 28, 2019	Dec. 28, 2019
Monetization Program | Other income (expense)
Transfer of Financial Assets Accounted for as Sales [Line Items]
Gain (Loss) on Sale of Accounts Receivable	$ (3)	$ (6)	$ (11)	$ (21)
Monetization Program | Maximum [Member]
Transfer of Financial Assets Accounted for as Sales [Line Items]
Transfers of Accounts Receivable Agreements	1,033		1,033
Monetization Program | Sold And Outstanding
Transfer of Financial Assets Accounted for as Sales [Line Items]
Transfer of Financial Assets Accounted for as Sales, Amount Derecognized	929		929		$ 774
Kellogg Foreign Subsidiaries Other Program
Transfer of Financial Assets Accounted for as Sales [Line Items]
Transfers of Accounts Receivable Agreements	$ 22		$ 22		$ 89

Divestiture - Narrative (Detail

Divestiture - Narrative (Details) - USD ($) $ in Millions	Jul. 28, 2019	Sep. 26, 2020	Sep. 28, 2019	Sep. 26, 2020	Sep. 28, 2019
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Cash proceeds from sale of businesses				$ 0	$ 1,332
Debt repurchase amount			$ 1,000		$ 1,000
Cookies, fruit and fruit-flavored snacks, pie crusts and ice cream cones businesses
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Cash proceeds from sale of businesses	$ 1,300
Net assets	$ 1,300
Transition Services Agreement Time Frame		18 months
Cookies, fruit and fruit-flavored snacks, pie crusts and ice cream cones businesses | Other income (expense)
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Gain (Loss) on Disposition of Business			38
Disposition related transaction costs			14
U.S. pension and nonpension postretirement plans | Cookies, fruit and fruit-flavored snacks, pie crusts and ice cream cones businesses
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Curtailment gain			$ 17

Goodwill and Other Intangible_3

Goodwill and Other Intangible Assets - Narrative (Details) - USD ($) $ in Millions	9 Months Ended
	Sep. 26, 2020	Sep. 28, 2019
Business Acquisition [Line Items]
Amortization	$ 21	$ 20
Currently estimated aggregate annual amortization expense for full-year	$ 28

Goodwill and Other Intangible_4

Goodwill and Other Intangible Assets - Carrying Amount of Goodwill (Details) $ in Millions	9 Months Ended
	Sep. 26, 2020USD ($)
Change in carrying amount of goodwill
Beginning Balance	$ 5,861
Currency translation adjustment	(81)
Ending Balance	5,780
North America
Change in carrying amount of goodwill
Beginning Balance	4,422
Currency translation adjustment	(1)
Ending Balance	4,421
Europe
Change in carrying amount of goodwill
Beginning Balance	347
Currency translation adjustment	0
Ending Balance	347
Latin America
Change in carrying amount of goodwill
Beginning Balance	213
Currency translation adjustment	(44)
Ending Balance	169
AMEA
Change in carrying amount of goodwill
Beginning Balance	879
Currency translation adjustment	(36)
Ending Balance	$ 843

Goodwill and Other Intangible_5

Goodwill and Other Intangible Assets - Intangible Assets Subject to Amortization (Details) - USD ($) $ in Millions	9 Months Ended
	Sep. 26, 2020	Sep. 28, 2019
Finite-lived Intangible Assets [Roll Forward]
Gross carrying amount, beginning balance	$ 594
Currency translation adjustment	(40)
Gross carrying amount, ending balance	554
Accumulated amortization, beginning balance	101
Amortization	21	$ 20
Currency translation adjustment	(6)
Accumulated amortization, ending balance	116
Intangible assets subject to amortization net, beginning balance	493
Amortization	(21)
Currency translation adjustment	(34)
Intangible assets subject to amortization net, ending balance	438
North America
Finite-lived Intangible Assets [Roll Forward]
Gross carrying amount, beginning balance	64
Currency translation adjustment	0
Gross carrying amount, ending balance	64
Accumulated amortization, beginning balance	31
Amortization	3
Currency translation adjustment	0
Accumulated amortization, ending balance	34
Intangible assets subject to amortization net, beginning balance	33
Amortization	(3)
Currency translation adjustment	0
Intangible assets subject to amortization net, ending balance	30
Europe
Finite-lived Intangible Assets [Roll Forward]
Gross carrying amount, beginning balance	41
Currency translation adjustment	0
Gross carrying amount, ending balance	41
Accumulated amortization, beginning balance	21
Amortization	3
Currency translation adjustment	0
Accumulated amortization, ending balance	24
Intangible assets subject to amortization net, beginning balance	20
Amortization	(3)
Currency translation adjustment	0
Intangible assets subject to amortization net, ending balance	17
Latin America
Finite-lived Intangible Assets [Roll Forward]
Gross carrying amount, beginning balance	60
Currency translation adjustment	(16)
Gross carrying amount, ending balance	44
Accumulated amortization, beginning balance	15
Amortization	2
Currency translation adjustment	(4)
Accumulated amortization, ending balance	13
Intangible assets subject to amortization net, beginning balance	45
Amortization	(2)
Currency translation adjustment	(12)
Intangible assets subject to amortization net, ending balance	31
AMEA
Finite-lived Intangible Assets [Roll Forward]
Gross carrying amount, beginning balance	429
Currency translation adjustment	(24)
Gross carrying amount, ending balance	405
Accumulated amortization, beginning balance	34
Amortization	13
Currency translation adjustment	(2)
Accumulated amortization, ending balance	45
Intangible assets subject to amortization net, beginning balance	395
Amortization	(13)
Currency translation adjustment	(22)
Intangible assets subject to amortization net, ending balance	$ 360

Goodwill and Other Intangible_6

Goodwill and Other Intangible Assets - Intangible Assets Not Subject to Amortization (Details) $ in Millions	9 Months Ended
	Sep. 26, 2020USD ($)
Indefinite-lived Intangible Assets [Roll Forward]
Intangible assets not subject to amortization, beginning balance	$ 2,083
Currency translation adjustment	(23)
Intangible assets not subject to amortization, ending balance	2,060
North America
Indefinite-lived Intangible Assets [Roll Forward]
Intangible assets not subject to amortization, beginning balance	1,238
Currency translation adjustment	0
Intangible assets not subject to amortization, ending balance	1,238
Europe
Indefinite-lived Intangible Assets [Roll Forward]
Intangible assets not subject to amortization, beginning balance	392
Currency translation adjustment	17
Intangible assets not subject to amortization, ending balance	409
Latin America
Indefinite-lived Intangible Assets [Roll Forward]
Intangible assets not subject to amortization, beginning balance	70
Currency translation adjustment	(19)
Intangible assets not subject to amortization, ending balance	51
AMEA
Indefinite-lived Intangible Assets [Roll Forward]
Intangible assets not subject to amortization, beginning balance	383
Currency translation adjustment	(21)
Intangible assets not subject to amortization, ending balance	$ 362

Restructuring Programs - Narrat

Restructuring Programs - Narrative (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 26, 2020	Sep. 28, 2019	Sep. 26, 2020	Sep. 28, 2019
Restructuring Cost and Reserve [Line Items]
Program costs to date	$ 74		$ 74
Restructuring charges	0	$ 18	15	$ 91
Selling, General and Administrative Expenses
Restructuring Cost and Reserve [Line Items]
Restructuring charges		5	$ 9	61
Minimum [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring and related activities cash implementation costs recovery time frame			3 years
Maximum [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring and related activities cash implementation costs recovery time frame			5 years
Employee related costs
Restructuring Cost and Reserve [Line Items]
Program costs to date	63		$ 63
Restructuring charges	0	(1)	13	41
Asset related costs
Restructuring Cost and Reserve [Line Items]
Program costs to date	0		0
Restructuring charges	0	5	0	15
Other costs
Restructuring Cost and Reserve [Line Items]
Program costs to date	16		16
Restructuring charges	0	$ 14	2	$ 35
Other Projects [Member] | Europe
Restructuring Cost and Reserve [Line Items]
Restructuring and related cost, expected cost	40		40
Expected cash costs			50
Other Projects [Member] | Europe | Selling, General and Administrative Expenses
Restructuring Cost and Reserve [Line Items]
Program costs to date	41		41
Restructuring charges	1		3
Other Projects [Member] | North America
Restructuring Cost and Reserve [Line Items]
Restructuring and related cost, expected cost	25		25
Expected cash costs			25
Other Projects [Member] | North America | Selling, General and Administrative Expenses
Restructuring Cost and Reserve [Line Items]
Program costs to date	21		21
Restructuring charges	$ 1		1
Other Projects [Member] | Latin America
Restructuring Cost and Reserve [Line Items]
Restructuring charges			4
Other Projects [Member] | AMEA
Restructuring Cost and Reserve [Line Items]
Restructuring charges			$ 8

Restructuring Programs - Projec

Restructuring Programs - Project K Program Costs Narrative (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 26, 2020	Sep. 28, 2019	Sep. 26, 2020	Sep. 28, 2019
Restructuring Cost and Reserve [Line Items]
Restructuring charges	$ 0	$ 18	$ 15	$ 91
Project K [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring charges		$ 15		$ 38

Restructuring Programs - Schedu

Restructuring Programs - Schedule of Restructuring and Cost Reduction Activities (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 26, 2020	Sep. 28, 2019	Sep. 26, 2020	Sep. 28, 2019
Restructuring Cost and Reserve [Line Items]
Restructuring charges	$ 0	$ 18	$ 15	$ 91
Program costs to date	74		74
Employee related costs
Restructuring Cost and Reserve [Line Items]
Restructuring charges	0	(1)	13	41
Program costs to date	63		63
Pension curtailment (gain) loss, net
Restructuring Cost and Reserve [Line Items]
Restructuring charges	0	0	0	0
Program costs to date	(5)		(5)
Asset related costs
Restructuring Cost and Reserve [Line Items]
Restructuring charges	0	5	0	15
Program costs to date	0		0
Other costs
Restructuring Cost and Reserve [Line Items]
Restructuring charges	0	14	2	35
Program costs to date	16		16
Operating Segments | North America
Restructuring Cost and Reserve [Line Items]
Restructuring charges	0	13	(2)	45
Program costs to date	19		19
Operating Segments | Europe
Restructuring Cost and Reserve [Line Items]
Restructuring charges	0	1	3	35
Program costs to date	41		41
Operating Segments | Latin America
Restructuring Cost and Reserve [Line Items]
Restructuring charges	0	4	4	8
Program costs to date	4		4
Operating Segments | AMEA
Restructuring Cost and Reserve [Line Items]
Restructuring charges	0	0	8	3
Program costs to date	8		8
Corporate
Restructuring Cost and Reserve [Line Items]
Restructuring charges	0	$ 0	2	$ 0
Program costs to date	$ 2		$ 2

Restructuring Programs - Total

Restructuring Programs - Total Projects Narrative (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 26, 2020	Sep. 28, 2019	Sep. 26, 2020	Sep. 28, 2019
Restructuring Cost and Reserve [Line Items]
Restructuring charges	$ 0	$ 18	$ 15	$ 91
Restructuring charges	$ 1
COGS
Restructuring Cost and Reserve [Line Items]
Restructuring charges		13	6	30
Selling, General and Administrative Expenses
Restructuring Cost and Reserve [Line Items]
Restructuring charges		$ 5	$ 9	$ 61

Restructuring Programs - Sche_2

Restructuring Programs - Schedule of Restructuring and Cost Reduction Activities Project Reserves Narrative (Details) - USD ($) $ in Millions	Sep. 26, 2020	Dec. 28, 2019
Restructuring and Related Activities [Abstract]
Project reserve	$ 22	$ 38

Restructuring Programs - Restru

Restructuring Programs - Restructuring and Cost Reduction Reserves Rollforward (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 26, 2020	Sep. 28, 2019	Sep. 26, 2020	Sep. 28, 2019
Restructuring Reserve [Roll Forward]
Liability, beginning balance			$ 38
Restructuring charges	$ 0	$ 18	15	$ 91
Cash payments			(31)
Non-cash charges and other			0
Liability, ending balance	22		22
Employee related costs
Restructuring Reserve [Roll Forward]
Liability, beginning balance			37
Restructuring charges	0	(1)	13	41
Cash payments			(28)
Non-cash charges and other			0
Liability, ending balance	22		22
Pension curtailment (gain) loss, net
Restructuring Reserve [Roll Forward]
Liability, beginning balance			0
Restructuring charges	0	0	0	0
Cash payments			0
Non-cash charges and other			0
Liability, ending balance	0		0
Other costs
Restructuring Reserve [Roll Forward]
Liability, beginning balance			1
Restructuring charges	0	14	2	35
Cash payments			(3)
Non-cash charges and other			0
Liability, ending balance	$ 0		$ 0
Project K [Member]
Restructuring Reserve [Roll Forward]
Restructuring charges		$ 15		$ 38

Equity - Narrative (Details)

Equity - Narrative (Details) - USD ($) shares in Millions, $ in Millions	3 Months Ended		9 Months Ended
	Sep. 26, 2020	Sep. 28, 2019	Sep. 26, 2020	Sep. 28, 2019	Feb. 29, 2020
Equity, Class of Treasury Stock [Line Items]
Anti-dilutive potential common shares excluded from reconciliation	7	10	7	14
Common stock repurchased				$ 220
February 2020 Share Repurchase Program
Equity, Class of Treasury Stock [Line Items]
Stock repurchase program, authorized amount					$ 1,500
Stock Repurchase Program, Remaining Authorized Repurchase Amount	$ 1,500		$ 1,500
December 2017 Share Repurchase Program
Equity, Class of Treasury Stock [Line Items]
Common stock repurchased (in shares)				4
Common stock repurchased				$ 220

Equity - Reclassifications Out

Equity - Reclassifications Out of AOCI (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 26, 2020	Sep. 28, 2019	Sep. 26, 2020	Sep. 28, 2019
Derivative Instruments, Gain (Loss) [Line Items]
COGS	$ 2,228	$ 2,372	$ 6,764	$ 7,062
SG&A	(790)	(737)	(2,166)	(2,252)
Interest expense	63	72	196	221
Net experience (gain) loss	0	1	2	3
Prior service cost	0		(1)
Other (Income) expense	70	150	151	247
Total before tax	418	341	1,331	1,067
Tax expense (benefit)	(65)	(91)	(268)	(237)
Net income	352	248	1,056	825
Reclassification out of Accumulated Other Comprehensive Income
Derivative Instruments, Gain (Loss) [Line Items]
Net income	3	(6)	6	(5)
Reclassification out of Accumulated Other Comprehensive Income | (Gains) losses on cash flow hedges
Derivative Instruments, Gain (Loss) [Line Items]
Total before tax	4	(1)	11	2
Tax expense (benefit)	(1)	0	(3)	(1)
Net income	3	(1)	8	1
Reclassification out of Accumulated Other Comprehensive Income | (Gains) losses on cash flow hedges | Interest rate contracts
Derivative Instruments, Gain (Loss) [Line Items]
Interest expense	4	(1)	11	2
Reclassification out of Accumulated Other Comprehensive Income | Amortization of postretirement and postemployment benefits
Derivative Instruments, Gain (Loss) [Line Items]
Total before tax	0	(1)	(3)	(3)
Tax expense (benefit)	0	0	1	1
Net income	0	(1)	(2)	(2)
Reclassification out of Accumulated Other Comprehensive Income | Amortization of postretirement and postemployment benefits | Other income (expense)
Derivative Instruments, Gain (Loss) [Line Items]
Net experience (gain) loss	0	(1)	(2)	(3)
Prior service cost	$ 0		$ (1)
Reclassification out of Accumulated Other Comprehensive Income | (Gains) losses on available-for-sale securities
Derivative Instruments, Gain (Loss) [Line Items]
Total before tax		(4)		(4)
Tax expense (benefit)		0		0
Net income		(4)		(4)
Corporate bonds | Reclassification out of Accumulated Other Comprehensive Income | (Gains) losses on available-for-sale securities | Other income (expense)
Derivative Instruments, Gain (Loss) [Line Items]
Other (Income) expense		$ (4)		$ (4)

Equity - Summary of Accumulated

Equity - Summary of Accumulated Other Comprehensive Income (Loss) (Details) - USD ($) $ in Millions	Sep. 26, 2020	Dec. 28, 2019
Accumulated Other Comprehensive Income (Loss), Net of Tax [Abstract]
Foreign currency translation adjustments	$ (1,688)	$ (1,399)
Cash flow hedges — unrealized net gain (loss)	(80)	(60)
Postretirement and postemployment benefits:
Net experience gain (loss)	6	7
Prior service credit (cost)	3	4
Available-for-sale securities unrealized net gain (loss)	2	0
Total accumulated other comprehensive income (loss)	$ (1,757)	$ (1,448)

Notes payable and long-term d_3

Notes payable and long-term debt - Components of Notes Payable (Details) - USD ($) $ in Millions	Sep. 26, 2020	Dec. 28, 2019
Short-term Debt [Line Items]
Principal amount	$ 116	$ 107
U.S. commercial paper
Short-term Debt [Line Items]
Principal amount	$ 0	$ 3
Effective interest rate	0.00%	1.78%
Bank borrowings
Short-term Debt [Line Items]
Principal amount	$ 116	$ 104

Notes payable and long-term d_4

Notes payable and long-term debt - Narrative (Details) - USD ($) $ in Millions	May 27, 2020	Sep. 28, 2019	Aug. 31, 2019	Sep. 26, 2020	Sep. 28, 2019	Sep. 26, 2020	Sep. 28, 2019	Dec. 28, 2019
Debt Instrument [Line Items]
Notional amount of derivative				$ 8,483		$ 8,483		$ 6,563
Debt repurchase amount		$ 1,000			$ 1,000		$ 1,000
Interest Expense, Debt			$ 15	$ 63	$ 72	$ 196	$ 221
2.10% Senior Notes Due 2030
Debt Instrument [Line Items]
Debt Instrument, Face Amount	$ 500
Debt Instrument, Interest Rate, Stated Percentage	2.10%
Proceeds from Debt, Net of Issuance Costs	$ 496
Debt Instrument, Term	10 years
4.00% U.S. Dollar Notes Due 2020
Debt Instrument [Line Items]
Debt Instrument, Face Amount	$ 600
Debt Instrument, Interest Rate, Stated Percentage	4.00%
Notional amount of derivative	$ 500
Deferred Gain (Loss) on Discontinuation of Interest Rate Fair Value Hedge	$ (51)
Senior Notes Due November 2019
Debt Instrument [Line Items]
Debt Instrument, Interest Rate, Stated Percentage		4.15%	4.15%		4.15%		4.15%
Debt repurchase amount		$ 309	$ 191		$ 309		$ 309
Interest Expense, Debt		$ 1
Senior Notes Due December 2020
Debt Instrument [Line Items]
Debt Instrument, Interest Rate, Stated Percentage			4.00%
Debt repurchase amount			$ 248
Senior Notes Due May 2021
Debt Instrument [Line Items]
Debt Instrument, Interest Rate, Stated Percentage			3.25%
Debt repurchase amount			$ 202
Senior Notes Due May 2023
Debt Instrument [Line Items]
Debt Instrument, Interest Rate, Stated Percentage			2.65%
Debt repurchase amount			$ 50

Stock Compensation - Compensati

Stock Compensation - Compensation Expense (Details) - Selling General and Administrative Expenses - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 26, 2020	Sep. 28, 2019	Sep. 26, 2020	Sep. 28, 2019
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Pre-tax compensation expense	$ 18	$ 14	$ 59	$ 46
Related income tax benefit	$ 5	$ 4	$ 16	$ 12

Stock Compensation - Restricted

Stock Compensation - Restricted Stock (Details) - Restricted stock units shares in Millions	9 Months Ended
	Sep. 26, 2020$ / sharesshares
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number of Shares [Roll Forward]
Granted (in shares) | shares	0.6
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Weighted Average Grant Date Fair Value [Abstract]
Granted, weighted-average grant-date fair value (in dollars per share) | $ / shares	$ 66

Stock Compensation - Stock Opti

Stock Compensation - Stock Options (Details) shares in Millions	9 Months Ended
	Sep. 26, 2020$ / sharesshares
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding [Roll Forward]
Granted (in shares) | shares	2.3
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Exercise Price [Abstract]
Granted, weighted-average exercise price (in dollars per share) | $ / shares	$ 7

Stock Compensation - Performanc

Stock Compensation - Performance Shares (Details) - USD ($) $ / shares in Units, $ in Millions	1 Months Ended	3 Months Ended
	Feb. 29, 2020	Mar. 28, 2020	Sep. 26, 2020
2020 Award
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award vesting period		3 years
Performance shares target grant distribution (in shares)			337,000
Grant-date fair value of shares that correspond with target grants			$ 66
Share-based Compensation Arrangement by Share-based Payment Award, Terms of Award		The number of shares earned could range between 0% and 200% of the target amount depending upon performance achieved over the three year vesting period. The performance conditions of the award include three year cumulative organic net sales growth and three year aggregate operating cash flow.
2020 Award | Cumulative Organic Net Sales Growth [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award vesting period		3 years
2020 Award | Aggregate Operating Cash Flow [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award vesting period		3 years
2017 Award
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Percentage of performance shares that may be earned upon performance	90.00%
Performance share award settlement	$ 6
Minimum [Member] | 2020 Award
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Percentage of performance shares that may be earned upon performance		0.00%
Maximum [Member] | 2020 Award
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Percentage of performance shares that may be earned upon performance		200.00%

Employee Benefits - Components

Employee Benefits - Components of Plan Benefit Expense (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 26, 2020	Sep. 28, 2019	Sep. 26, 2020	Sep. 28, 2019
Pension | Global Plans
Defined Benefit Plan Disclosure [Line Items]
Service cost	$ 9	$ 9	$ 27	$ 27
Interest cost	31	42	99	131
Expected return on plan assets	(87)	(86)	(257)	(254)
Amortization of unrecognized prior service cost (gain)	1	1	5	5
Recognized net (gain) loss	7	23	64	34
Net periodic benefit cost	(39)	(11)	(62)	(57)
Curtailment (gain) loss	0	(11)	(7)	(11)
Total plan benefit (income) expense	(39)	(22)	(69)	(68)
Other Nonpension Postretirement | U.S. and Canada
Defined Benefit Plan Disclosure [Line Items]
Service cost	2	5	9	12
Interest cost	7	10	23	30
Expected return on plan assets	(24)	(23)	(70)	(65)
Amortization of unrecognized prior service cost (gain)	(1)	(2)	(6)	(6)
Recognized net (gain) loss	0	(55)	0	(55)
Net periodic benefit cost	(16)	(65)	(44)	(84)
Curtailment (gain) loss	0	(6)	0	(6)
Total plan benefit (income) expense	(16)	(71)	(44)	(90)
Postemployment | Global Plans
Defined Benefit Plan Disclosure [Line Items]
Service cost	1	1	3	3
Interest cost	1	0	1	1
Recognized net (gain) loss	0	(1)	(2)	(3)
Total plan benefit (income) expense	$ 2	$ 0	$ 2	$ 1

Employee Benefits - Component_2

Employee Benefits - Components of Plan Benefit Expense Narrative (Details) - UNITED STATES - USD ($) $ in Millions	Jul. 28, 2019	Sep. 26, 2020	Jun. 27, 2020	Sep. 28, 2019	Sep. 26, 2020	Sep. 28, 2019
Pension
Defined Benefit Plan Disclosure [Line Items]
Curtailment (gain) loss	$ (11)		$ (7)
Recognized net (gain) loss		$ 7		$ 15	$ 15	$ 26
Pension | Mark-to-Market Loss
Defined Benefit Plan Disclosure [Line Items]
Recognized net (gain) loss	8		$ 49
Other Nonpension Postretirement
Defined Benefit Plan Disclosure [Line Items]
Curtailment (gain) loss	(6)
Other Nonpension Postretirement | Mark-to-Market Loss
Defined Benefit Plan Disclosure [Line Items]
Recognized net (gain) loss	$ (55)
Maximum [Member] | Pension
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Assumptions Used Calculating Net Periodic Benefit Cost, Expected Long-term Rate of Return on Plan Assets	7.50%
Maximum [Member] | Other Nonpension Postretirement
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Assumptions Used Calculating Net Periodic Benefit Cost, Expected Long-term Rate of Return on Plan Assets	7.50%
Minimum [Member] | Pension
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Assumptions Used Calculating Net Periodic Benefit Cost, Expected Long-term Rate of Return on Plan Assets	7.00%
Minimum [Member] | Other Nonpension Postretirement
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Assumptions Used Calculating Net Periodic Benefit Cost, Expected Long-term Rate of Return on Plan Assets	7.00%

Employee Benefits - Contributio

Employee Benefits - Contributions to Employee Benefit Plans (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended		12 Months Ended
	Sep. 26, 2020	Sep. 28, 2019	Sep. 26, 2020	Sep. 28, 2019	Dec. 28, 2019
Defined Benefit Plan Disclosure [Line Items]
Employer contributions to employee benefit plans	$ 7	$ 7	$ 19	$ 19	$ 28
Total current year projected employer contributions	26		26
Global Plans | Pension
Defined Benefit Plan Disclosure [Line Items]
Employer contributions to employee benefit plans	1	2	4	6	10
Total current year projected employer contributions	7		7
U.S. and Canada | Nonpension postretirement
Defined Benefit Plan Disclosure [Line Items]
Employer contributions to employee benefit plans	6	$ 5	15	$ 13	$ 18
Total current year projected employer contributions	$ 19		$ 19

Employee Benefits Employee Bene

Employee Benefits Employee Benefits - Multi-employer Pension Plan Exit Liability - Narrative (Details) - USD ($) $ in Millions	3 Months Ended			9 Months Ended
	Sep. 26, 2020	Jun. 27, 2020	Sep. 28, 2019	Sep. 26, 2020	Sep. 28, 2019
Multiemployer Plans [Line Items]
Settlement agreement payment	$ 7
Settlement Agreement Gain		$ 5
Multiemployer Pension plan withdrawal pre-tax charge			$ 132	$ (5)	$ 132
Annual Cash Obligation			$ 8
Cash obligation period			20 years

Income Taxes - Narrative (Detai

Income Taxes - Narrative (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 26, 2020	Sep. 28, 2019	Sep. 26, 2020	Sep. 28, 2019	Dec. 28, 2019
Income Tax Contingency [Line Items]
Effective income tax rate	16.00%	27.00%	20.00%	22.00%
Income taxes paid			$ 212	$ 211
Unrecognized tax benefits	$ 62		62		$ 90
Projected additions to unrecognized tax benefits	3		3
Unrecognized tax benefits that would affect the effective income tax rate	53		53
Reversal of liability for uncertain tax positions	32		32
Other current liabilities
Income Tax Contingency [Line Items]
Unrecognized tax benefits	$ 16		$ 16

Income Taxes - Reconciliation o

Income Taxes - Reconciliation of Total Gross Unrecognized Tax Benefits (Details) $ in Millions	9 Months Ended
	Sep. 26, 2020USD ($)
Reconciliation of Unrecognized Tax Benefits, Excluding Amounts Pertaining to Examined Tax Returns [Roll Forward]
Beginning balance	$ 90
Additions, current year	3
Reductions, current year	0
Additions, prior years	5
Reductions, prior years	(34)
Unrecognized Tax Benefits, Decrease Resulting from Settlements with Taxing Authorities	(2)
Unrecognized Tax Benefits, Reduction Resulting from Lapse of Applicable Statute of Limitations	0
Ending balance	$ 62

Income Taxes Income Taxes - Inc

Income Taxes Income Taxes - Income Tax Related Interest Accrued (Details) $ in Millions	Sep. 26, 2020USD ($)
Income Tax Contingency [Line Items]
Income tax related interest accrued	$ 13

Derivative Instruments and Fa_3

Derivative Instruments and Fair Value Measurements - Narrative (Details) - USD ($) $ in Millions	9 Months Ended
	Sep. 26, 2020	Dec. 28, 2019
Derivative [Line Items]
Net deferred losses reported in AOCI to be reclassified into income in the next twelve months	$ (16)
Concentration of risk, derivative instruments assets	96
Collateral posted	0
Derivative, Collateral, Obligation to Return Cash	$ 0	$ 7
Five Largest Accounts | Customer Concentration Risk | Trade receivables
Derivative [Line Items]
Concentration percentage	22.00%

Derivative Instruments and Fa_4

Derivative Instruments and Fair Value Measurements - Schedule of Total Notional Amounts of Derivative Instruments (Details) - USD ($) $ in Millions	Sep. 26, 2020	Dec. 28, 2019
Derivatives, Fair Value [Line Items]
Notional amount of derivative	$ 8,483	$ 6,563
Foreign currency exchange contracts
Derivatives, Fair Value [Line Items]
Notional amount of derivative	4,288	2,628
Cross currency interest rate contract
Derivatives, Fair Value [Line Items]
Notional amount of derivative	1,556	1,540
Interest rate contracts
Derivatives, Fair Value [Line Items]
Notional amount of derivative	2,339	1,871
Commodity contracts
Derivatives, Fair Value [Line Items]
Notional amount of derivative	$ 300	$ 524

Derivative Instruments and Fa_5

Derivative Instruments and Fair Value Measurements - Schedule of Assets and Liabilities Measured at Fair Value on a Recurring Basis (Details) - USD ($) $ in Millions		Sep. 26, 2020	Dec. 28, 2019
Derivatives, Fair Value [Line Items]
Fair Value Of Related Hedge Portion Of Long Term Debt		$ 700	$ 700
Long-term debt total, carrying value		7,000	7,200
Designated as Hedging Instrument
Derivatives, Fair Value [Line Items]
Assets		125	96
Liabilities		(9)	(4)
Not Designated as Hedging Instrument
Derivatives, Fair Value [Line Items]
Assets		89	21
Liabilities		(86)	(32)
Level 1 | Designated as Hedging Instrument
Derivatives, Fair Value [Line Items]
Assets		0	0
Liabilities		0	0
Level 1 | Not Designated as Hedging Instrument
Derivatives, Fair Value [Line Items]
Assets		2	9
Liabilities		(1)	(1)
Level 2 | Designated as Hedging Instrument
Derivatives, Fair Value [Line Items]
Assets		125	96
Liabilities		(9)	(4)
Level 2 | Not Designated as Hedging Instrument
Derivatives, Fair Value [Line Items]
Assets		87	12
Liabilities		(85)	(31)
Cross currency interest rate contract | Other current assets | Designated as Hedging Instrument
Derivatives, Fair Value [Line Items]
Assets		50	45
Cross currency interest rate contract | Other current assets | Level 1 | Designated as Hedging Instrument
Derivatives, Fair Value [Line Items]
Assets		0	0
Cross currency interest rate contract | Other current assets | Level 2 | Designated as Hedging Instrument
Derivatives, Fair Value [Line Items]
Assets		50	45
Cross currency interest rate contract | Other assets | Designated as Hedging Instrument
Derivatives, Fair Value [Line Items]
Assets		45	40
Cross currency interest rate contract | Other assets | Level 1 | Designated as Hedging Instrument
Derivatives, Fair Value [Line Items]
Assets		0	0
Cross currency interest rate contract | Other assets | Level 2 | Designated as Hedging Instrument
Derivatives, Fair Value [Line Items]
Assets		45	40
Cross currency interest rate contract | Other current liabilities | Designated as Hedging Instrument
Derivatives, Fair Value [Line Items]
Liabilities		(5)	0
Cross currency interest rate contract | Other current liabilities | Level 1 | Designated as Hedging Instrument
Derivatives, Fair Value [Line Items]
Liabilities		0	0
Cross currency interest rate contract | Other current liabilities | Level 2 | Designated as Hedging Instrument
Derivatives, Fair Value [Line Items]
Liabilities		(5)	0
Cross currency interest rate contract | Other liabilities | Designated as Hedging Instrument
Derivatives, Fair Value [Line Items]
Liabilities		(1)	0
Cross currency interest rate contract | Other liabilities | Level 1 | Designated as Hedging Instrument
Derivatives, Fair Value [Line Items]
Liabilities		0	0
Cross currency interest rate contract | Other liabilities | Level 2 | Designated as Hedging Instrument
Derivatives, Fair Value [Line Items]
Liabilities		(1)	0
Foreign currency exchange contracts | Other current assets | Not Designated as Hedging Instrument
Derivatives, Fair Value [Line Items]
Assets		63	12
Foreign currency exchange contracts | Other current assets | Level 1 | Not Designated as Hedging Instrument
Derivatives, Fair Value [Line Items]
Assets		0	0
Foreign currency exchange contracts | Other current assets | Level 2 | Not Designated as Hedging Instrument
Derivatives, Fair Value [Line Items]
Assets		63	12
Foreign currency exchange contracts | Other assets | Not Designated as Hedging Instrument
Derivatives, Fair Value [Line Items]
Assets		5	0
Foreign currency exchange contracts | Other assets | Level 1 | Not Designated as Hedging Instrument
Derivatives, Fair Value [Line Items]
Assets		0	0
Foreign currency exchange contracts | Other assets | Level 2 | Not Designated as Hedging Instrument
Derivatives, Fair Value [Line Items]
Assets		5	0
Foreign currency exchange contracts | Other current liabilities | Not Designated as Hedging Instrument
Derivatives, Fair Value [Line Items]
Liabilities		(47)	(18)
Foreign currency exchange contracts | Other current liabilities | Level 1 | Not Designated as Hedging Instrument
Derivatives, Fair Value [Line Items]
Liabilities		0	0
Foreign currency exchange contracts | Other current liabilities | Level 2 | Not Designated as Hedging Instrument
Derivatives, Fair Value [Line Items]
Liabilities		(47)	(18)
Foreign currency exchange contracts | Other liabilities | Not Designated as Hedging Instrument
Derivatives, Fair Value [Line Items]
Liabilities		(7)	0
Foreign currency exchange contracts | Other liabilities | Level 1 | Not Designated as Hedging Instrument
Derivatives, Fair Value [Line Items]
Liabilities		0	0
Foreign currency exchange contracts | Other liabilities | Level 2 | Not Designated as Hedging Instrument
Derivatives, Fair Value [Line Items]
Liabilities		(7)	0
Interest rate contracts | Other current assets | Designated as Hedging Instrument
Derivatives, Fair Value [Line Items]
Assets		0	7
Interest rate contracts | Other current assets | Not Designated as Hedging Instrument
Derivatives, Fair Value [Line Items]
Assets		4	0
Interest rate contracts | Other current assets | Level 1 | Designated as Hedging Instrument
Derivatives, Fair Value [Line Items]
Assets		0	0
Interest rate contracts | Other current assets | Level 1 | Not Designated as Hedging Instrument
Derivatives, Fair Value [Line Items]
Assets		0	0
Interest rate contracts | Other current assets | Level 2 | Designated as Hedging Instrument
Derivatives, Fair Value [Line Items]
Assets		0	7
Interest rate contracts | Other current assets | Level 2 | Not Designated as Hedging Instrument
Derivatives, Fair Value [Line Items]
Assets		4	0
Interest rate contracts | Other assets | Designated as Hedging Instrument
Derivatives, Fair Value [Line Items]
Assets		30	4
Interest rate contracts | Other assets | Not Designated as Hedging Instrument
Derivatives, Fair Value [Line Items]
Assets		15	0
Interest rate contracts | Other assets | Level 1 | Designated as Hedging Instrument
Derivatives, Fair Value [Line Items]
Assets		0	0
Interest rate contracts | Other assets | Level 1 | Not Designated as Hedging Instrument
Derivatives, Fair Value [Line Items]
Assets		0	0
Interest rate contracts | Other assets | Level 2 | Designated as Hedging Instrument
Derivatives, Fair Value [Line Items]
Assets	[1]	30	4
Interest rate contracts | Other assets | Level 2 | Not Designated as Hedging Instrument
Derivatives, Fair Value [Line Items]
Assets		15	0
Interest rate contracts | Other current liabilities | Designated as Hedging Instrument
Derivatives, Fair Value [Line Items]
Liabilities		(2)	(4)
Interest rate contracts | Other current liabilities | Not Designated as Hedging Instrument
Derivatives, Fair Value [Line Items]
Liabilities		(6)	0
Interest rate contracts | Other current liabilities | Level 1 | Designated as Hedging Instrument
Derivatives, Fair Value [Line Items]
Liabilities		0	0
Interest rate contracts | Other current liabilities | Level 1 | Not Designated as Hedging Instrument
Derivatives, Fair Value [Line Items]
Liabilities		0	0
Interest rate contracts | Other current liabilities | Level 2 | Designated as Hedging Instrument
Derivatives, Fair Value [Line Items]
Liabilities		(2)	(4)
Interest rate contracts | Other current liabilities | Level 2 | Not Designated as Hedging Instrument
Derivatives, Fair Value [Line Items]
Liabilities		(6)	0
Interest rate contracts | Other liabilities | Designated as Hedging Instrument
Derivatives, Fair Value [Line Items]
Liabilities		(1)	0
Interest rate contracts | Other liabilities | Not Designated as Hedging Instrument
Derivatives, Fair Value [Line Items]
Liabilities		(25)	(13)
Interest rate contracts | Other liabilities | Level 1 | Designated as Hedging Instrument
Derivatives, Fair Value [Line Items]
Liabilities		0	0
Interest rate contracts | Other liabilities | Level 1 | Not Designated as Hedging Instrument
Derivatives, Fair Value [Line Items]
Liabilities		0	0
Interest rate contracts | Other liabilities | Level 2 | Designated as Hedging Instrument
Derivatives, Fair Value [Line Items]
Liabilities		(1)	0
Interest rate contracts | Other liabilities | Level 2 | Not Designated as Hedging Instrument
Derivatives, Fair Value [Line Items]
Liabilities		(25)	(13)
Commodity contracts | Other current assets | Not Designated as Hedging Instrument
Derivatives, Fair Value [Line Items]
Assets		2	9
Commodity contracts | Other current assets | Level 1 | Not Designated as Hedging Instrument
Derivatives, Fair Value [Line Items]
Assets		2	9
Commodity contracts | Other current assets | Level 2 | Not Designated as Hedging Instrument
Derivatives, Fair Value [Line Items]
Assets		0	0
Commodity contracts | Other current liabilities | Not Designated as Hedging Instrument
Derivatives, Fair Value [Line Items]
Liabilities		(1)	(1)
Commodity contracts | Other current liabilities | Level 1 | Not Designated as Hedging Instrument
Derivatives, Fair Value [Line Items]
Liabilities		(1)	(1)
Commodity contracts | Other current liabilities | Level 2 | Not Designated as Hedging Instrument
Derivatives, Fair Value [Line Items]
Liabilities		0	0
Net Investment Hedging
Derivatives, Fair Value [Line Items]
Long-term debt total, carrying value		$ 2,700	$ 2,600
[1]	The fair value of the related hedged portion of the Company's long-term debt, a level 2 liability, was $0.7 billion as of September 26, 2020 and December 28, 2019.

Derivative Instruments and Fa_6

Derivative Instruments and Fair Value Measurements - Schedule of Cumulative Basis Adjustments for Fair Value Hedges (Details) - USD ($) $ in Millions		Sep. 26, 2020	Dec. 28, 2019
Derivatives, Fair Value [Line Items]
Current maturities of long-term debt		$ 1,417	$ 620
Long-term debt		7,000	7,195
Carrying amount of hedged liability | Fair Value Hedges | Interest rate contracts | Designated as Hedging Instrument
Derivatives, Fair Value [Line Items]
Current maturities of long-term debt		494	493
Long-term debt		2,853	2,643
Cumulative fair value adjustment | Fair Value Hedges | Interest rate contracts | Designated as Hedging Instrument
Derivatives, Fair Value [Line Items]
Current maturities of long-term debt	[1]	0	0
Long-term debt	[1]	23	19
Hedging adjustment | Discontinued Hedges | Interest rate contracts
Derivatives, Fair Value [Line Items]
Long-term debt		$ 14	$ 15
[1]	The hedged long-term debt includes $14 million and $15 million of hedging adjustment on discontinued hedging relationships as of September 26, 2020 and December 28, 2019, respectively.

Derivative Instruments and Fa_7

Derivative Instruments and Fair Value Measurements - Schedule of Offsetting Assets and Liabilities (Details) - USD ($) $ in Millions	Sep. 26, 2020	Dec. 28, 2019
Offsetting [Abstract]
Asset derivatives, Amounts Presented in the Consolidated Balance Sheet	$ 214	$ 117
Asset derivatives, Financial Instruments, Gross Amounts Not Offset in the Consolidated Balance Sheet	(94)	(27)
Asset derivatives, Cash Collateral Posted, Gross Amounts Not Offset in the Consolidated Balance Sheet	0	(7)
Asset derivatives, Net Amount	120	83
Liability derivatives, Amounts Presented in the Consolidated Balance Sheet	(95)	(36)
Liability derivatives, Financial Instruments, Gross Amounts Not Offset in the Consolidated Balance Sheet	94	27
Liability derivatives, Cash Collateral Received, Gross Amounts Not Offset in the Consolidated Balance Sheet	0	0
Liability derivatives, net amount	$ (1)	$ (9)

Derivative Instruments and Fa_8

Derivative Instruments and Fair Value Measurements - Effect of Derivative Instruments on the Consolidated Statements of Income and Comprehensive Income (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 26, 2020	Sep. 28, 2019	Sep. 26, 2020	Sep. 28, 2019
Derivative Instruments, Gain (Loss) [Line Items]
Gain (loss) recognized in AOCI	$ 15	$ (12)	$ (38)	$ (12)
Not Designated as Hedging Instrument
Derivative Instruments, Gain (Loss) [Line Items]
Gain (loss) recognized in income	12	(14)	19	(17)
Not Designated as Hedging Instrument | Foreign currency exchange contracts | COGS
Derivative Instruments, Gain (Loss) [Line Items]
Gain (loss) recognized in income	(3)	7	43	(3)
Not Designated as Hedging Instrument | Foreign currency exchange contracts | Selling, General and Administrative Expenses
Derivative Instruments, Gain (Loss) [Line Items]
Gain (loss) recognized in income	(1)	0	3	0
Not Designated as Hedging Instrument | Foreign currency exchange contracts | Interest expense
Derivative Instruments, Gain (Loss) [Line Items]
Gain (loss) recognized in income			1	0
Not Designated as Hedging Instrument | Foreign currency exchange contracts | Other income (expense), net
Derivative Instruments, Gain (Loss) [Line Items]
Gain (loss) recognized in income	(1)	0	5	(1)
Not Designated as Hedging Instrument | Commodity contracts | COGS
Derivative Instruments, Gain (Loss) [Line Items]
Gain (loss) recognized in income	17	(21)	(33)	(13)
Net Investment Hedging
Derivative Instruments, Gain (Loss) [Line Items]
Gain (loss) recognized in AOCI	(155)	148	(102)	179
Gain (Loss) from Components Excluded from Assessment of Fair Value Hedge Effectiveness, Net	8	9	26	25
Net Investment Hedging | Foreign currency denominated long-term debt
Derivative Instruments, Gain (Loss) [Line Items]
Gain (loss) recognized in AOCI	(94)	99	(103)	115
Gain (Loss) from Components Excluded from Assessment of Fair Value Hedge Effectiveness, Net	0	0	0	0
Net Investment Hedging | Cross currency interest rate contract | Interest expense
Derivative Instruments, Gain (Loss) [Line Items]
Gain (loss) recognized in AOCI	(61)	49	1	64
Gain (Loss) from Components Excluded from Assessment of Fair Value Hedge Effectiveness, Net	$ 8	$ 9	$ 26	$ 25

Derivative Instruments and Fa_9

Derivative Instruments and Fair Value Measurements - Schedule of Effect of Fair Value and Cash Flow Hedge Accounting on Consolidated Statement of Income (Details) - USD ($) $ in Millions	Aug. 31, 2019	Sep. 26, 2020	Sep. 28, 2019	Sep. 26, 2020	Sep. 28, 2019
Derivative Instruments, Gain (Loss) [Line Items]
Interest Expense, Debt	$ 15	$ 63	$ 72	$ 196	$ 221
Interest rate contracts | Interest expense | Designated as Hedging Instrument | Fair Value Hedges
Derivative Instruments, Gain (Loss) [Line Items]
Hedged items		(2)	(5)	(5)	(42)
Derivatives designated as hedging instruments		2	7	6	44
Interest rate contracts | Interest expense | Designated as Hedging Instrument | Cash Flow Hedging
Derivative Instruments, Gain (Loss) [Line Items]
Gain (loss) reclassified from AOCI into income		$ (4)	$ 1	$ (11)	$ (2)

Derivative Instruments and F_10

Derivative Instruments and Fair Value Measurements - Marketable Securities (Details) - USD ($) $ in Millions	3 Months Ended	9 Months Ended
	Sep. 26, 2020	Sep. 26, 2020	Sep. 28, 2019	Dec. 28, 2019
Marketable Securities [Line Items]
Marketable securities	$ 250	$ 250		$ 0
Payments to Acquire Marketable Securities		250	$ 0
Debt Securities
Marketable Securities [Line Items]
Payments to Acquire Marketable Securities	$ 50	$ 250

Derivative Instruments and F_11

Derivative Instruments and Fair Value Measurements - Schedule of Other Fair Value Measurements (Details) - Corporate bonds - USD ($) $ in Millions	Sep. 26, 2020	Dec. 28, 2019
Debt Securities, Available-for-sale [Line Items]
Available-for-sale securities, cost	$ 62	$ 0
Available-for-sale securities, unrealized gain (loss)	2	0
Available-for-sale securities, market value	$ 64	$ 0

Derivative Instruments and F_12

Derivative Instruments and Fair Value Measurements - Schedule of Fair Value of Long-term Debt (Details) - USD ($) $ in Billions	Sep. 26, 2020	Dec. 28, 2019
Derivative Instruments and Fair Value Measurements [Abstract]
Long-term debt, fair value	$ 7.9	$ 7.8
Long-term debt total, carrying value	$ 7	$ 7.2

Reportable Segments (Details)

Reportable Segments (Details) $ in Millions	Jul. 28, 2019USD ($)	Sep. 26, 2020USD ($)	Sep. 28, 2019USD ($)	Sep. 26, 2020USD ($)	Sep. 28, 2019USD ($)
Segment Reporting Information [Line Items]
Number of operating segments				4
Net sales		$ 3,429	$ 3,372	$ 10,306	$ 10,355
Operating profit		411	263	1,376	1,041
Cash proceeds from sale of businesses				0	1,332
Operating Segments
Segment Reporting Information [Line Items]
Operating profit		473	352	1,601	1,280
Operating Segments | North America
Segment Reporting Information [Line Items]
Net sales		2,059	2,059	6,323	6,496
Operating profit		321	208	1,151	910
Operating Segments | Europe
Segment Reporting Information [Line Items]
Net sales		552	527	1,624	1,566
Operating profit		63	68	224	164
Operating Segments | Latin America
Segment Reporting Information [Line Items]
Net sales		236	244	686	707
Operating profit		31	23	84	61
Operating Segments | AMEA
Segment Reporting Information [Line Items]
Net sales		582	542	1,673	1,586
Operating profit		58	53	142	145
Corporate
Segment Reporting Information [Line Items]
Operating profit		$ (62)	(89)	$ (225)	(239)
Cookies, fruit and fruit-flavored snacks, pie crusts and ice cream cones businesses
Segment Reporting Information [Line Items]
Cash proceeds from sale of businesses	$ 1,300
Net assets	$ 1,300
Cookies, fruit and fruit-flavored snacks, pie crusts and ice cream cones businesses | North America
Segment Reporting Information [Line Items]
Net sales			$ 55		$ 562

Reportable Segments Supplementa

Reportable Segments Supplemental Product Information (Details) - USD ($) $ in Millions	3 Months Ended			9 Months Ended
	Sep. 26, 2020	Mar. 28, 2020	Sep. 28, 2019	Sep. 26, 2020		Sep. 28, 2019
Segment Reporting Information [Line Items]
Net sales	$ 3,429		$ 3,372	$ 10,306		$ 10,355
Snacks
Segment Reporting Information [Line Items]
Net sales	1,593		1,610	4,669	[1]	5,132
Snacks | Revision of prior period, reclassification, adjustment
Segment Reporting Information [Line Items]
Net sales		$ 229
Cereal
Segment Reporting Information [Line Items]
Net sales	1,324		1,280	4,093	[1]	3,811
Cereal | Revision of prior period, reclassification, adjustment
Segment Reporting Information [Line Items]
Net sales		$ (229)
Frozen
Segment Reporting Information [Line Items]
Net sales	279		260	857		786
Noodles and other
Segment Reporting Information [Line Items]
Net sales	$ 233		$ 222	$ 687		$ 626
[1]	The year-to-date snacks and cereal net sales reflect the correction of an error in the Company’s first quarter 2020 disclosure. First quarter net sales for snacks was understated $229 million and net sales for cereal was overstated $229 million within the disclosure included in our previously issued first quarter financial statements. The revisions, which did not impact consolidated net sales, are not considered material to the first, second or third quarter 2020 financial statements.

Supplemental Financial Statem_3

Supplemental Financial Statement Data - Consolidated Balance Sheet (Unaudited) (Details) - USD ($) $ in Millions	Sep. 26, 2020	Dec. 28, 2019
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Trade receivables	$ 1,414	$ 1,315
Allowance for doubtful accounts	(22)	(10)
Redundable income taxes	17	56
Other receivables	217	215
Accounts receivable, net	1,626	1,576
Raw materials and supplies	334	303
Finished goods and materials in process	929	923
Inventories	1,263	1,226
Property	9,100	9,051
Accumulated depreciation	(5,616)	(5,439)
Property, net	3,484	3,612
Pension	298	241
Deferred income taxes	219	231
Nonpension postretirement benefits	328	283
Other	507	384
Other assets	1,352	1,139
Accrued income taxes	29	42
Accrued salaries and wages	316	290
Other	780	577
Other current liabilities	1,125	909
Income taxes payable	54	81
Nonpension postretirement benefits	32	33
Other	434	429
Other liabilities	$ 520	$ 543

Subsequent Events (Details)

Subsequent Events (Details) $ in Millions	1 Months Ended
	Oct. 30, 2020USD ($)
Subsequent Event [Line Items]
Number of retired participants accepting settlement of defined benefit pension plan obligations	8,000
Benefit obligation decrease	$ 470