Consolidated Statement of Cash Flows - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Cash Flows from Operating Activities
Net income including noncontrolling interest	$ 5,388	$ 4,582	$ 5,363
Adjustments to reconcile net income including noncontrolling interest to net cash provided by operating activities
Depreciation and amortization	1,911	1,593	1,488
Company pension and postretirement contributions	(156)	(210)	(370)
Company pension and postretirement expense	406	357	410
Stock-based compensation expense	262	278	302
Gain on sale of businesses	(389)	(111)	(545)
Deferred income taxes	(165)	(273)	(57)
Loss on deconsolidation of Venezuelan subsidiary		162
Changes in assets and liabilities
Accounts receivable	165	345	(305)
Inventories	(91)	370	(509)
Accounts payable	252	(117)	408
Accrued income taxes (current and long-term)	132	205	134
Other - net	398	(111)	120
Net cash provided by (used in) operating activities	8,113	7,070	6,439
Cash Flows from Investing Activities
Purchases of property, plant and equipment (PP&E)	(1,501)	(1,699)	(1,577)
Proceeds from sale of PP&E and other assets	128	123	262
Acquisitions, net of cash acquired	(25)	(4,984)	13
Purchases of marketable securities and investments	(1,579)	(1,635)	(1,828)
Proceeds from maturities and sale of marketable securities and investments	1,811	1,443	2,497
Proceeds from sale of businesses, net of cash sold	576	236	846
Other - net	10	72	9
Net cash provided by (used in) investing activities	(580)	(6,444)	222
Cash Flows from Financing Activities
Change in short-term debt - net	(143)	(316)	(284)
Repayment of debt (maturities greater than 90 days)	(3,482)	(2,716)	(1,034)
Proceeds from debt (maturities greater than 90 days)	1,750	6,281	2,251
Purchases of treasury stock	(368)	(1,407)	(4,870)
Proceeds from issuance of treasury stock pursuant to stock option and benefit plans	429	547	485
Dividends paid to shareholders	(3,388)	(3,316)	(3,193)
Other - net	(98)	(197)	(56)
Net cash provided by (used in) financing activities	(5,300)	(1,124)	(6,701)
Effect of exchange rate changes on cash and cash equivalents	48	(2)	(160)
Net increase (decrease) in cash and cash equivalents	2,281	(500)	(200)
Cash and cash equivalents at beginning of year	2,353	2,853	3,053
Cash and cash equivalents at end of period	$ 4,634	$ 2,353	$ 2,853