Consolidated Statements of Cash Flows (USD $) In Millions, unless otherwise specified	3 Months Ended
	Mar. 31, 2014	Mar. 31, 2013
Cash flows from operating activities:
Net income	$ 487	$ 362
Adjustments to Net income:
Depreciation	213	228
Amortization of acquisition-related intangibles	81	85
Amortization of capitalized software	16	32
Stock-based compensation	78	75
Gains on sales of assets	(37)	(3)
Deferred income taxes	0	26
Increase (decrease) from changes in:
Accounts receivable	(149)	(112)
Inventories	17	57
Prepaid expenses and other current assets	(29)	10
Accounts payable and accrued expenses	(117)	(244)
Accrued compensation	(189)	(154)
Income taxes payable	80	29
Changes in funded status of retirement plans	22	29
Other	(11)	(60)
Cash flows from operating activities	462	360
Cash flows from investing activities:
Capital expenditures	(77)	(84)
Proceeds from asset sales	37	18
Purchases of short-term investments	(1,051)	(536)
Proceeds from short-term investments	785	615
Other	1	9
Cash flows from investing activities	(305)	22
Cash flows from financing activities:
Proceeds from issuance of long-term debt	498	0
Dividends paid	(325)	(232)
Stock repurchases	(720)	(679)
Proceeds from common stock transactions	283	454
Excess tax benefit from share-based payments	49	52
Other	(4)	0
Cash flows from financing activities	(219)	(405)
Net change in Cash and cash equivalents	(62)	(23)
Cash and cash equivalents at beginning of period	1,627	1,416
Cash and cash equivalents at end of period	$ 1,565	$ 1,393