Consolidated Statement of Cash Flows (Unaudited) - USD ($) $ in Millions	3 Months Ended
	Mar. 28, 2020	Mar. 30, 2019
Operating activities
Net income	$ 350	$ 285
Adjustments to reconcile net income to operating cash flows:
Depreciation and amortization	117	124
Postretirement benefit plan expense (benefit)	(39)	(38)
Deferred income taxes	8	7
Stock compensation	19	13
Other	(11)	(8)
Postretirement benefit plan contributions	(6)	(5)
Changes in operating assets and liabilities, net of acquisitions:
Trade receivables	(194)	(229)
Inventories	1	12
Accounts payable	44	(16)
All other current assets and liabilities	102	(75)
Net cash provided by (used in) operating activities	391	70
Investing activities
Additions to properties	(112)	(148)
Acquisition of cost method investments	(3)	0
Purchases of available for sale securities	(65)	(7)
Sales of available for sale securities	5	7
Other	(27)	(15)
Net cash provided by (used in) investing activities	(202)	(163)
Financing activities
Net issuances (reductions) of notes payable	549	429
Reductions of long-term debt	(3)	0
Net issuances of common stock	46	7
Common stock repurchases	0	(220)
Cash dividends	(195)	(192)
Collateral received on derivative instruments	80	0
Net cash provided by (used in) financing activities	477	24
Effect of exchange rate changes on cash and cash equivalents	(47)	20
Increase (decrease) in cash and cash equivalents	619	(49)
Cash and cash equivalents at beginning of period	397	321
Cash and cash equivalents at end of period	1,016	272
Supplemental cash flow disclosures
Interest paid	8	8
Income taxes paid	18	79
Supplemental cash flow disclosures of non-cash investing activities
Additions to properties included in accounts payable	$ 87	$ 122