Consolidated Statement of Cash Flows (Unaudited) - USD ($) $ in Millions	6 Months Ended
	Jun. 29, 2019	Jun. 30, 2018
Operating activities
Net income	$ 577	$ 1,043
Adjustments to reconcile net income to operating cash flows:
Depreciation and amortization	243	234
Postretirement benefit plan expense (benefit)	(65)	(86)
Deferred income taxes	23	69
Stock compensation	29	30
Gain on unconsolidated entities, net	0	(200)
Other	1	(67)
Postretirement benefit plan contributions	(12)	(274)
Changes in operating assets and liabilities, net of acquisitions:
Trade receivables	(239)	(83)
Inventories	(6)	(38)
Accounts payable	29	64
All other current assets and liabilities	(60)	(245)
Net cash provided by (used in) operating activities	520	447
Investing activities
Additions to properties	(294)	(270)
Acquisitions, net of cash acquired	(8)	(28)
Investments in unconsolidated entities	0	(388)
Acquisition of cost method investments	0	(4)
Purchases of available for sale securities	(16)	0
Sales of available for sale securities	16	0
Other	(25)	29
Net cash provided by (used in) investing activities	(327)	(661)
Financing activities
Net issuances (reductions) of notes payable	391	(76)
Issuances of long-term debt	28	993
Reductions of long-term debt	0	(401)
Net issuances of common stock	12	70
Common stock repurchases	(220)	(50)
Cash dividends	(380)	(374)
Other	(8)	0
Net cash provided by (used in) financing activities	(177)	162
Effect of exchange rate changes on cash and cash equivalents	3	28
Increase (decrease) in cash and cash equivalents	19	(24)
Cash and cash equivalents at beginning of period	321	281
Cash and cash equivalents at end of period	340	257
Supplemental cash flow disclosures
Interest paid	154	151
Income taxes paid	157	76
Supplemental cash flow disclosures of non-cash investing activities
Additions to properties included in accounts payable	$ 100	$ 77