Consolidated Statements of Cash Flows - USD ($) $ in Millions	9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017
Cash flows from operating activities
Net income	$ 4,341	$ 3,338
Adjustments to Net income:
Depreciation	432	406
Amortization of acquisition-related intangibles	239	239
Amortization of capitalized software	34	35
Stock compensation	190	197
Deferred taxes	(82)	(47)
Increase (decrease) from changes in:
Accounts receivable	(307)	(306)
Inventories	(181)	(118)
Prepaid expenses and other current assets	568	43
Accounts payable and accrued expenses	6	(19)
Accrued compensation	(112)	(85)
Income taxes payable	11	(226)
Changes in funded status of retirement plans	26	36
Other	(121)	(59)
Cash flows from operating activities	5,044	3,434
Cash flows from investing activities
Capital expenditures	(808)	(464)
Proceeds from asset sales	0	40
Purchases of short-term investments	(5,308)	(3,105)
Proceeds from short-term investments	4,545	3,305
Other	(12)	(5)
Cash flows from investing activities	(1,583)	(229)
Cash flows from financing activities
Proceeds from issuance of long-term debt	1,500	605
Repayment of debt	(500)	(625)
Dividends paid	(1,819)	(1,493)
Stock repurchases	(3,091)	(1,850)
Proceeds from common stock transactions	335	321
Other	(40)	(21)
Cash flows from financing activities	(3,615)	(3,063)
Net change in Cash and cash equivalents	(154)	142
Cash and cash equivalents at beginning of period	1,656	1,154
Cash and cash equivalents at end of period	$ 1,502	$ 1,296