Consolidated Statement of Cash Flows (Unaudited) - USD ($) $ in Millions	6 Months Ended
	Jun. 27, 2020	Jun. 29, 2019
Operating activities
Net income	$ 704	$ 577
Adjustments to reconcile net income to operating cash flows:
Depreciation and amortization	234	243
Postretirement benefit plan expense (benefit)	(58)	(65)
Deferred income taxes	23	23
Stock compensation	37	29
Other	(17)	1
Postretirement benefit plan contributions	(12)	(12)
Changes in operating assets and liabilities, net of acquisitions:
Trade receivables	(165)	(239)
Inventories	(33)	(6)
Accounts payable	105	29
All other current assets and liabilities	153	(60)
Net cash provided by (used in) operating activities	971	520
Investing activities
Additions to properties	(218)	(294)
Purchase of marketable securities	(200)	0
Acquisitions, net of cash acquired	0	(8)
Acquisition of cost method investments	(4)	0
Purchases of available for sale securities	(70)	(16)
Sales of available for sale securities	7	16
Other	(30)	(25)
Net cash provided by (used in) investing activities	(515)	(327)
Financing activities
Net issuances (reductions) of notes payable	13	391
Issuances of long-term debt	554	28
Reductions of long-term debt	(40)	0
Net issuances of common stock	60	12
Common stock repurchases	0	(220)
Cash dividends	(390)	(380)
Collateral received on derivative instruments	38	0
Other	(1)	(8)
Net cash provided by (used in) financing activities	234	(177)
Effect of exchange rate changes on cash and cash equivalents	(40)	3
Increase (decrease) in cash and cash equivalents	650	19
Cash and cash equivalents at beginning of period	397	321
Cash and cash equivalents at end of period	1,047	340
Supplemental cash flow disclosures
Interest paid	140	154
Income taxes paid	33	157
Supplemental cash flow disclosures of non-cash investing activities
Additions to properties included in accounts payable	$ 78	$ 100