Consolidated Statements of Cash Flows - USD ($) $ in Millions	6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014
Cash flows from operating activities
Net income	$ 1,352	$ 1,170
Adjustments to Net income:
Depreciation	401	426
Amortization of acquisition-related intangibles	160	161
Amortization of capitalized software	26	30
Stock-based compensation	162	155
Gains on sales of assets	(3)	(39)
Deferred income taxes	(56)	(57)
Increase (decrease) from changes in:
Accounts receivable	(194)	(314)
Inventories	(101)	(13)
Prepaid expenses and other current assets	49	(15)
Accounts payable and accrued expenses	(142)	(176)
Accrued compensation	(169)	(76)
Income taxes payable	(78)	(48)
Changes in funded status of retirement plans	41	41
Other	(19)	(8)
Cash flows from operating activities	1,429	1,237
Cash flows from investing activities
Capital expenditures	(248)	(157)
Proceeds from asset sales	10	40
Purchases of short-term investments	(1,254)	(1,466)
Proceeds from short-term investments	1,475	2,079
Other	1	1
Cash flows from investing activities	(16)	497
Cash flows from financing activities
Proceeds from issuance of long-term debt	498	498
Repayment of debt	(250)	(1,000)
Dividends paid	(710)	(648)
Stock repurchases	(1,324)	(1,463)
Proceeds from common stock transactions	297	408
Excess tax benefit from share-based payments	64	64
Other	(3)	(4)
Cash flows from financing activities	(1,428)	(2,145)
Net change in Cash and cash equivalents	(15)	(411)
Cash and cash equivalents at beginning of period	1,199	1,627
Cash and cash equivalents at end of period	$ 1,184	$ 1,216