Consolidated Statement of Cash Flows - USD ($) $ in Millions	6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017
Cash Flows from Operating Activities
Net income including noncontrolling interest	$ 2,468	$ 2,911
Adjustments to reconcile net income including noncontrolling interest to net cash provided by operating activities
Depreciation and amortization	762	818
Company pension and postretirement contributions	(261)	(279)
Company pension and postretirement expense	204	163
Stock-based compensation expense	208	206
Gain on sale of businesses	(530)	(490)
Deferred income taxes	(1)	(120)
Changes in assets and liabilities
Accounts receivable	(606)	(412)
Inventories	(337)	(347)
Accounts payable	(12)	(60)
Accrued income taxes (current and long-term)	234	257
Other - net	(87)	(17)
Net cash provided by operating activities	2,042	2,630
Cash Flows from Investing Activities
Purchases of property, plant and equipment (PP&E)	(669)	(589)
Proceeds from sale of PP&E and other assets	96	13
Acquisitions, net of cash acquired	13
Purchases of marketable securities and investments	(964)	(407)
Proceeds from maturities and sale of marketable securities and investments	1,636	543
Proceeds from sale of businesses, net of cash sold	806	862
Other - net	(11)	5
Net cash provided by investing activities	907	427
Cash Flows from Financing Activities
Change in short-term debt - net	774	(113)
Repayment of debt (maturities greater than 90 days)	(6)	(650)
Proceeds from debt (maturities greater than 90 days)	6
Purchases of treasury stock	(2,537)	(1,184)
Proceeds from issuance of treasury stock pursuant to stock option and benefit plans	305	496
Dividends paid to shareholders	(1,612)	(1,403)
Other - net	(26)	(2)
Net cash used in financing activities	(3,096)	(2,856)
Effect of exchange rate changes on cash and cash equivalents	(105)	55
Net increase (decrease) in cash and cash equivalents	(252)	256
Cash and cash equivalents at beginning of year	3,053	2,398
Cash and cash equivalents at end of period	$ 2,801	$ 2,654