Consolidated Statement of Cash Flows (Unaudited) - USD ($) $ in Millions	9 Months Ended
	Sep. 28, 2019	Sep. 29, 2018
Operating activities
Net income	$ 825	$ 1,426
Adjustments to reconcile net income to operating cash flows:
Depreciation and amortization	360	374
Postretirement benefit plan expense (benefit)	(158)	(188)
Deferred income taxes	(206)	99
Stock compensation	42	42
Multi-employer pension plan exit liability	132	0
Gain on unconsolidated entities, net	0	(200)
Other	(70)	(91)
Postretirement benefit plan contributions	(19)	(279)
Changes in operating assets and liabilities, net of acquisitions:
Trade receivables	(253)	(139)
Inventories	16	(67)
Accounts payable	0	103
All other current assets and liabilities	256	(154)
Net cash provided by (used in) operating activities	925	926
Investing activities
Additions to properties	(436)	(389)
Acquisitions, net of cash acquired	(8)	(28)
Divestitures	1,332	0
Investments in unconsolidated entities	0	(389)
Acquisition of cost method investments	0	(6)
Purchases of available for sale securities	(18)	0
Sales of available for sale securities	83	0
Other	(22)	27
Net cash provided by (used in) investing activities	931	(785)
Financing activities
Net issuances (reductions) of notes payable	9	(198)
Issuances of long-term debt	40	993
Reductions of long-term debt	(1,000)	(401)
Debt redemption costs	(17)	0
Net issuances of common stock	40	160
Common stock repurchases	(220)	(120)
Cash dividends	(574)	(568)
Other	(9)	(2)
Net cash provided by (used in) financing activities	(1,731)	(136)
Effect of exchange rate changes on cash and cash equivalents	7	23
Increase (decrease) in cash and cash equivalents	132	28
Cash and cash equivalents at beginning of period	321	281
Cash and cash equivalents at end of period	453	309
Supplemental cash flow disclosures
Interest paid	180	153
Income taxes paid	211	163
Supplemental cash flow disclosures of non-cash investing activities
Additions to properties included in accounts payable	$ 93	$ 98