Consolidated Cash Flow Statement - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Operating Activities
Net income	$ 594	$ 675
Depreciation and amortization	189	213
Asset impairments	3	0
Stock-based compensation	22	15
Deferred income taxes	(35)	(9)
Net (gains) losses on asset dispositions	4	7
Equity companies' earnings (in excess of) less than dividends paid	(39)	(38)
Operating working capital	(400)	(144)
Postretirement benefits	(15)	(14)
Other	(2)	(1)
Cash Provided by Operations	321	704
Investing Activities
Capital spending	(298)	(352)
Investments in time deposits	(159)	(105)
Maturities of time deposits	207	96
Other	5	2
Cash Used for Investing	(245)	(359)
Financing Activities
Cash dividends paid	(359)	(357)
Change in short-term debt	744	(282)
Debt proceeds	5	1,241
Debt repayments	(253)	(252)
Proceeds from exercise of stock options	10	108
Acquisitions of common stock for the treasury	(169)	(214)
Other	(30)	(24)
Cash Used for Financing	(52)	220
Effect of Exchange Rate Changes on Cash and Cash Equivalents	(7)	(28)
Change in Cash and Cash Equivalents	17	537
Cash and Cash Equivalents - Beginning of Period	303	442
Cash and Cash Equivalents - End of Period	$ 320	$ 979