Consolidated Statements of Cash Flows - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018
Cash flows from operating activities
Net income	$ 1,217	$ 1,366
Adjustments to net income:
Depreciation	166	137
Amortization of acquisition-related intangibles	79	80
Amortization of capitalized software	13	12
Stock compensation	61	70
Gains on sales of assets	(2)	0
Deferred taxes	4	(31)
Increase (decrease) from changes in:
Accounts receivable	(233)	(176)
Inventories	86	(97)
Prepaid expenses and other current assets	223	356
Accounts payable and accrued expenses	(67)	(51)
Accrued compensation	(373)	(372)
Income taxes payable	(94)	(131)
Changes in funded status of retirement plans	7	(15)
Other	20	(36)
Cash flows from operating activities	1,107	1,112
Cash flows from investing activities
Capital expenditures	(251)	(189)
Proceeds from asset sales	2	0
Purchases of short-term investments	(149)	(996)
Proceeds from short-term investments	1,584	1,455
Other	(13)	(4)
Cash flows from investing activities	1,173	266
Cash flows from financing activities
Proceeds from issuance of long-term debt	743	0
Dividends paid	(724)	(611)
Stock repurchases	(1,152)	(873)
Proceeds from common stock transactions	151	178
Other	(16)	(11)
Cash flows from financing activities	(998)	(1,317)
Net change in cash and cash equivalents	1,282	61
Cash and cash equivalents at beginning of period	2,438	1,656
Cash and cash equivalents at end of period	$ 3,720	$ 1,717