Consolidated Statement of Cash Flows - USD ($) $ in Millions	9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016
Cash Flows from Operating Activities
Net income including noncontrolling interest	$ 4,344	$ 3,902
Adjustments to reconcile net income including noncontrolling interest to net cash provided by operating activities
Depreciation and amortization	1,195	1,090
Company pension and postretirement contributions	(314)	(323)
Company pension and postretirement expense	244	180
Stock-based compensation expense	266	244
Gain on sale of businesses	(490)	(40)
Deferred income taxes	(105)	(100)
Changes in assets and liabilities
Accounts receivable	(595)	(469)
Inventories	(436)	(15)
Accounts payable	(25)	(107)
Accrued income taxes (current and long-term)	249	155
Other - net	47	(64)
Net cash provided by operating activities	4,380	4,453
Cash Flows from Investing Activities
Purchases of property, plant and equipment (PP&E)	(914)	(984)
Proceeds from sale of PP&E and other assets	18	18
Acquisitions, net of cash acquired	(12)	(17)
Purchases of marketable securities and investments	(1,055)	(1,036)
Proceeds from maturities and sale of marketable securities and investments	745	794
Proceeds from sale of businesses	862	56
Other - net	2	(4)
Net cash used in investing activities	(354)	(1,173)
Cash Flows from Financing Activities
Change in short-term debt - net	60	(498)
Repayment of debt (maturities greater than 90 days)	(650)	(992)
Proceeds from debt (maturities greater than 90 days)		2,832
Purchases of treasury stock	(1,564)	(2,829)
Proceeds from issuance of treasury stock pursuant to stock option and benefit plans	582	741
Dividends paid to shareholders	(2,104)	(2,014)
Other - net	(23)	(20)
Net cash used in financing activities	(3,699)	(2,780)
Effect of exchange rate changes on cash and cash equivalents	106	10
Net increase (decrease) in cash and cash equivalents	433	510
Cash and cash equivalents at beginning of year	2,398	1,798
Cash and cash equivalents at end of period	$ 2,831	$ 2,308