Consolidated Cash Flow Statement - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Operating Activities
Net income	$ 2,197	$ 1,445	$ 2,319
Depreciation and amortization	917	882	724
Asset Impairments	0	74	0
Stock-based compensation	96	41	76
Deferred income taxes	29	2	(69)
Net (gains) losses on asset dispositions	(193)	52	21
Equity companies' earnings (in excess of) less than dividends paid	(6)	18	26
Operating working capital	(288)	389	(148)
Postretirement benefits	13	(25)	2
Other	(29)	92	(22)
Cash Provided by Operations	2,736	2,970	2,929
Investing Activities
Capital spending	(1,209)	(877)	(785)
Proceeds from dispositions of property	242	51	3
Investments in time deposits	(568)	(353)	(214)
Maturities of time deposits	542	272	183
Other	(49)	5	(38)
Cash Used for Investing	(1,042)	(902)	(851)
Financing Activities
Cash dividends paid	(1,408)	(1,386)	(1,359)
Change in short-term debt	303	(34)	360
Debt proceeds	706	507	937
Debt repayments	(707)	(407)	(1,481)
Proceeds from exercise of stock options	228	62	121
Acquisitions of common stock for the treasury	(800)	(800)	(911)
Other	(114)	(57)	(88)
Cash Used for Financing	(1,792)	(2,115)	(2,421)
Effect of Exchange Rate Changes on Cash and Cash Equivalents	1	(30)	36
Change in Cash and Cash Equivalents	(97)	(77)	(307)
Cash and Cash Equivalents - Beginning of Year	539	616	923
Cash and Cash Equivalents - End of Year	$ 442	$ 539	$ 616