Consolidated Statements of Cash Flows - USD ($) $ in Millions	6 Months Ended
	Jun. 30, 2016	Jun. 30, 2015
Cash flows from operating activities
Net income	$ 1,447	$ 1,352
Adjustments to Net income:
Depreciation	316	401
Amortization of acquisition-related intangibles	159	160
Amortization of capitalized software	16	26
Stock-based compensation	148	162
Gains on sales of assets	0	(3)
Deferred income taxes	(35)	(56)
Increase (decrease) from changes in:
Accounts receivable	(176)	(194)
Inventories	(185)	(101)
Prepaid expenses and other current assets	35	49
Accounts payable and accrued expenses	(65)	(142)
Accrued compensation	(175)	(169)
Income taxes payable	106	(78)
Changes in funded status of retirement plans	32	41
Other	(7)	(19)
Cash flows from operating activities	1,616	1,429
Cash flows from investing activities
Capital expenditures	(282)	(248)
Proceeds from asset sales	0	10
Purchases of short-term investments	(1,193)	(1,254)
Proceeds from short-term investments	2,110	1,475
Other	3	1
Cash flows from investing activities	638	(16)
Cash flows from financing activities
Proceeds from issuance of long-term debt	499	498
Repayment of debt	(1,000)	(250)
Dividends paid	(765)	(710)
Stock repurchases	(1,157)	(1,324)
Proceeds from common stock transactions	325	297
Excess tax benefit from share-based payments	82	64
Other	(3)	(3)
Cash flows from financing activities	(2,019)	(1,428)
Net change in Cash and cash equivalents	235	(15)
Cash and cash equivalents at beginning of period	1,000	1,199
Cash and cash equivalents at end of period	$ 1,235	$ 1,184