Consolidated Statement of Cash Flows - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Cash Flows from Operating Activities
Net income including noncontrolling interest	$ 1,627	$ 1,310
Adjustments to reconcile net income including noncontrolling interest to net cash provided by operating activities
Depreciation and amortization	460	440
Company pension and postretirement contributions	(47)	(39)
Company pension and postretirement expense	47	77
Stock-based compensation expense	131	120
Gain on sale of businesses		(2)
Deferred income taxes	16	29
Changes in assets and liabilities
Accounts receivable	(205)	(143)
Inventories	(304)	(207)
Accounts payable	155	12
Accrued income taxes (current and long-term)	42	68
Other - net	(234)	(452)
Net cash provided by (used in) operating activities	1,688	1,213
Cash Flows from Investing Activities
Purchases of property, plant and equipment (PP&E)	(310)	(332)
Proceeds from sale of PP&E and other assets	32	7
Acquisitions, net of cash acquired		(25)
Purchases of marketable securities and investments	(428)	(318)
Proceeds from maturities and sale of marketable securities and investments	318	207
Proceeds from sale of businesses, net of cash sold		86
Other - net	19
Net cash provided by (used in) investing activities	(369)	(375)
Cash Flows from Financing Activities
Change in short-term debt - net	6	462
Repayment of debt (maturities greater than 90 days)	(450)
Proceeds from debt (maturities greater than 90 days)		1,745
Purchases of treasury stock	(231)	(365)
Proceeds from issuance of treasury stock pursuant to stock option and benefit plans	293	149
Dividends paid to shareholders	(858)	(847)
Other - net	(11)	(36)
Net cash provided by (used in) financing activities	(1,251)	1,108
Effect of exchange rate changes on cash and cash equivalents	(66)	(46)
Net increase (decrease) in cash and cash equivalents	2	1,900
Cash and cash equivalents at beginning of year	4,634	4,634
Cash and cash equivalents at end of period	$ 4,636	$ 4,253