Consolidated Statement of Cash Flows - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2017	Mar. 31, 2016
Cash Flows from Operating Activities
Net income including noncontrolling interest	$ 1,326	$ 1,278
Adjustments to reconcile net income including noncontrolling interest to net cash provided by operating activities
Depreciation and amortization	438	356
Company pension and postretirement contributions	(248)	(56)
Company pension and postretirement expense	81	59
Stock-based compensation expense	147	144
Deferred income taxes	(84)	(38)
Changes in assets and liabilities
Accounts receivable	(237)	(245)
Inventories	(149)	(37)
Accounts payable	(124)	(116)
Accrued income taxes (current and long-term)	225	334
Other - net	(387)	(419)
Net cash provided by operating activities	988	1,260
Cash Flows from Investing Activities
Purchases of property, plant and equipment (PP&E)	(287)	(314)
Proceeds from sale of PP&E and other assets	1	18
Acquisitions, net of cash acquired		(4)
Purchases of marketable securities and investments	(213)	(225)
Proceeds from maturities and sale of marketable securities and investments	351	164
Proceeds from sale of businesses	53	56
Other investing	5	25
Net cash used in investing activities	(90)	(280)
Cash Flows from Financing Activities
Change in short-term debt - net	(68)	138
Purchases of treasury stock	(690)	(1,227)
Proceeds from issuance of treasury stock pursuant to stock option and benefit plans	315	357
Dividends paid to shareholders	(702)	(672)
Other - net	(6)	(22)
Net cash used in financing activities	(1,151)	(1,426)
Effect of exchange rate changes on cash and cash equivalents	28	(15)
Net increase (decrease) in cash and cash equivalents	(225)	(461)
Cash and cash equivalents at beginning of year	2,398	1,798
Cash and cash equivalents at end of period	$ 2,173	$ 1,337