Consolidated Statement of Cash Flows - USD ($) $ in Millions	12 Months Ended
	Jan. 02, 2021	Dec. 28, 2019	Dec. 29, 2018
Operating Activities
Net income	$ 1,264	$ 977	$ 1,344
Adjustments to reconcile net income to operating cash flows
Depreciation and amortization	479	484	516
Postretirement benefit plan expense (benefit)	(77)	(89)	170
Deferred income taxes	69	47	46
Stock compensation	76	56	59
Multi-employer pension plan exit liability	(5)	132	7
Gain from unconsolidated entities, net	0	0	(200)
Other	(16)	(36)	(70)
Tax payment related to divestitures	0	(255)	0
Postretirement benefit plan contributions	(32)	(28)	(287)
Changes in operating assets and liabilities, net of acquisitions:
Trade receivables	75	(145)	76
Inventories	(54)	2	(86)
Accounts payable	(9)	(9)	115
All other current assets and liabilities	216	40	(154)
Net cash provided by (used in) operating activities	1,986	1,176	1,536
Investing activities
Additions to properties	(505)	(586)	(578)
Purchases of marketable securities	(250)	0	0
Sales of marketable securities	250	0	0
Acquisitions, net of cash acquired	0	(8)	(28)
Divestiture, net of cash disposed	(7)	1,332	0
Investments in unconsolidated entities	0	0	(389)
Acquisition of cost method investments	(4)	(1)	(8)
Purchases of available-for-sale securities	(81)	(18)	0
Sales of available-for-sale securities	19	83	0
Other	(7)	(28)	55
Net cash provided by (used in) investing activities	(585)	774	(948)
Financing activities
Net increase (reduction) of notes payable, with maturities less than or equal to 90 days	(16)	(18)	(264)
Issuances of notes payable, with maturities greater than 90 days	44	62	62
Reductions of notes payable, with maturities greater than 90 days	(34)	(69)	(23)
Issuances of long-term debt	557	80	993
Reductions of long-term debt	(1,229)	(1,009)	(408)
Debt redemption costs	(20)	(17)	0
Net issuances of common stock	112	64	167
Common stock repurchases	0	(220)	(320)
Cash dividends	(782)	(769)	(762)
Collateral received on derivative instruments	(19)	0	0
Other	(1)	(9)	(11)
Net cash provided by (used in) financing activities	(1,388)	(1,905)	(566)
Effect of exchange rate changes on cash and cash equivalents	25	31	18
Increase (decrease) in cash and cash equivalents	38	76	40
Cash and cash equivalents at beginning of period	397	321	281
Cash and cash equivalents at end of period	435	397	321
Supplemental cash flow disclosures:
Interest paid	249	284	280
Income taxes paid	281	537	188
Supplemental cash flow disclosures of non-cash investing activities:
Additions to properties included in accounts payable	$ 189	$ 128	$ 162