Consolidated Cash Flow Statement - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Operating Activities
Net income	$ 675	$ 466
Depreciation and amortization	213	234
Stock-based compensation	15	16
Deferred income taxes	(9)	11
Net (gains) losses on asset dispositions	7	6
Equity companies' earnings in excess of dividends paid	(38)	(27)
Operating working capital	(144)	(375)
Postretirement benefits	(14)	(12)
Other	(1)	(2)
Cash Provided by Operations	704	317
Investing Activities
Capital spending	(352)	(316)
Investments in time deposits	(105)	(80)
Maturities of time deposits	96	72
Other	2	0
Cash Used for Investing	(359)	(324)
Financing Activities
Cash dividends paid	(357)	(345)
Change in short-term debt	(282)	851
Debt proceeds	1,241	0
Debt repayments	(252)	(402)
Proceeds from exercise of stock options	108	26
Acquisitions of common stock for the treasury	(214)	(164)
Other	(24)	(8)
Cash Used for Financing	220	(42)
Effect of Exchange Rate Changes on Cash and Cash Equivalents	(28)	1
Change in Cash and Cash Equivalents	537	(48)
Cash and Cash Equivalents - Beginning of Period	442	539
Cash and Cash Equivalents - End of Period	$ 979	$ 491