Consolidated Statements of Cash Flows (USD $) In Millions, unless otherwise specified	9 Months Ended
	Sep. 30, 2014	Sep. 30, 2013
Cash flows from operating activities:
Net income	$ 1,996	$ 1,651
Adjustments to Net income:
Depreciation	639	666
Amortization of acquisition-related intangibles	241	253
Amortization of capitalized software	45	65
Stock-based compensation	217	221
Gains on sales of assets	(44)	(6)
Deferred income taxes	(84)	(2)
Increase (decrease) from changes in:
Accounts receivable	(272)	(302)
Inventories	(20)	31
Prepaid expenses and other current assets	81	(61)
Accounts payable and accrued expenses	(224)	(297)
Accrued compensation	51	37
Income taxes payable	(90)	(29)
Changes in funded status of retirement plans	73	82
Other	11	(124)
Cash flows from operating activities	2,620	2,185
Cash flows from investing activities:
Capital expenditures	(260)	(305)
Proceeds from asset sales	46	21
Purchases of short-term investments	(2,170)	(3,177)
Proceeds from short-term investments	2,491	3,564
Other	7	17
Cash flows from investing activities	114	120
Cash flows from financing activities:
Proceeds from issuance of long-term debt	498	986
Repayment of debt	(1,000)	(1,500)
Dividends paid	(967)	(849)
Stock repurchases	(2,133)	(2,134)
Proceeds from common stock transactions	476	1,146
Excess tax benefit from share-based payments	75	72
Other	(4)	(7)
Cash flows from financing activities	(3,055)	(2,286)
Net change in Cash and cash equivalents	(321)	19
Cash and cash equivalents at beginning of period	1,627	1,416
Cash and cash equivalents at end of period	$ 1,306	$ 1,435