Consolidated Statements of Cash Flows - USD ($) $ in Millions	9 Months Ended
	Sep. 30, 2016	Sep. 30, 2015
Cash flows from operating activities
Net income	$ 2,415	$ 2,150
Adjustments to Net income:
Depreciation	466	594
Amortization of acquisition-related intangibles	239	240
Amortization of capitalized software	23	38
Stock-based compensation	204	228
Gains on sales of assets	0	(3)
Deferred income taxes	(160)	(106)
Increase (decrease) from changes in:
Accounts receivable	(274)	(241)
Inventories	(117)	13
Prepaid expenses and other current assets	130	89
Accounts payable and accrued expenses	(56)	(190)
Accrued compensation	(26)	(37)
Income taxes payable	153	21
Changes in funded status of retirement plans	56	65
Other	(24)	(23)
Cash flows from operating activities	3,029	2,838
Cash flows from investing activities
Capital expenditures	(421)	(387)
Proceeds from asset sales	0	10
Purchases of short-term investments	(2,171)	(1,713)
Proceeds from short-term investments	2,625	2,455
Other	2	8
Cash flows from investing activities	35	373
Cash flows from financing activities
Proceeds from issuance of long-term debt	499	498
Repayment of debt	(1,000)	(1,000)
Dividends paid	(1,147)	(1,058)
Stock repurchases	(1,657)	(2,114)
Proceeds from common stock transactions	484	332
Excess tax benefit from share-based payments	129	68
Other	(3)	(3)
Cash flows from financing activities	(2,695)	(3,277)
Net change in Cash and cash equivalents	369	(66)
Cash and cash equivalents at beginning of period	1,000	1,199
Cash and cash equivalents at end of period	$ 1,369	$ 1,133