Consolidated Statement of Cash Flows - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Cash Flows from Operating Activities
Net income including noncontrolling interest	$ 1,303	$ 1,627
Adjustments to reconcile net income including noncontrolling interest to net cash provided by operating activities
Depreciation and amortization	459	460
Company pension and postretirement contributions	(42)	(47)
Company pension and postretirement expense	43	47
Stock-based compensation expense	135	131
Gain on sale of businesses	0	0
Deferred income taxes	(49)	16
Changes in assets and liabilities
Accounts receivable	(189)	(205)
Inventories	(319)	(304)
Accounts payable	261	155
Accrued income taxes (current and long-term)	179	42
Other — net	(770)	(234)
Net cash provided by (used in) operating activities	1,011	1,688
Cash Flows from Investing Activities
Purchases of property, plant and equipment (PP&E)	(424)	(310)
Proceeds from sale of PP&E and other assets	56	32
Acquisitions, net of cash acquired	0	0
Purchases of marketable securities and investments	(125)	(428)
Proceeds from maturities and sale of marketable securities and investments	217	318
Proceeds from sale of businesses, net of cash sold	13	0
Other — net	0	19
Net cash provided by (used in) investing activities	(263)	(369)
Cash Flows from Financing Activities
Change in short-term debt — net	(5)	6
Repayment of debt (maturities greater than 90 days)	(579)	(450)
Proceeds from debt (maturities greater than 90 days)	0	0
Purchases of treasury stock	(773)	(231)
Proceeds from issuance of treasury stock pursuant to stock option and benefit plans	164	293
Dividends paid to shareholders	(852)	(858)
Other — net	(9)	(11)
Net cash provided by (used in) financing activities	(2,054)	(1,251)
Effect of exchange rate changes on cash and cash equivalents	(11)	(66)
Net increase (decrease) in cash and cash equivalents	(1,317)	2
Cash and cash equivalents at beginning of year	4,564	4,634
Cash and cash equivalents at end of period	$ 3,247	$ 4,636