Consolidated Statements of Cash Flows - USD ($) $ in Millions	9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018
Cash flows from operating activities
Net income	$ 3,947	$ 4,341
Adjustments to net income:
Depreciation	522	432
Amortization of acquisition-related intangibles	238	239
Amortization of capitalized software	40	34
Stock compensation	176	190
Gains on sales of assets	(23)	0
Deferred taxes	31	(82)
Increase (decrease) from changes in:
Accounts receivable	(135)	(307)
Inventories	177	(181)
Prepaid expenses and other current assets	285	568
Accounts payable and accrued expenses	(64)	6
Accrued compensation	(115)	(112)
Income taxes payable	(200)	11
Changes in funded status of retirement plans	26	26
Other	(10)	(121)
Cash flows from operating activities	4,895	5,044
Cash flows from investing activities
Capital expenditures	(684)	(808)
Proceeds from asset sales	30	0
Purchases of short-term investments	(1,374)	(5,308)
Proceeds from short-term investments	2,004	4,545
Other	25	(12)
Cash flows from investing activities	1	(1,583)
Cash flows from financing activities
Proceeds from issuance of long-term debt	1,491	1,500
Repayment of debt	(750)	(500)
Dividends paid	(2,167)	(1,819)
Stock repurchases	(2,471)	(3,091)
Proceeds from common stock transactions	491	335
Other	(35)	(40)
Cash flows from financing activities	(3,441)	(3,615)
Net change in cash and cash equivalents	1,455	(154)
Cash and cash equivalents at beginning of period	2,438	1,656
Cash and cash equivalents at end of period	$ 3,893	$ 1,502