Consolidated Statements of Cash Flows (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Cash flows from operating activities
Net income	$ 2,821	$ 2,162	$ 1,759
Adjustments to Net income:
Depreciation	850	879	957
Amortization of acquisition-related intangibles	321	336	342
Amortization of capitalized software	59	82	102
Stock-based compensation	277	287	263
Gains on sales of assets	(73)	(6)	0
Deferred income taxes	(61)	50	130
Gain on transfer of Japan substitutional pension	0	0	(144)
Increase (decrease) from changes in:
Accounts receivable	(49)	16	311
Inventories	(53)	26	5
Prepaid expenses and other current assets	65	(136)	162
Accounts payable and accrued expenses	(194)	(284)	99
Accrued compensation	89	18	(82)
Income taxes payable	(81)	78	(229)
Changes in funded status of retirement plans	(58)	28	(198)
Other	(21)	(152)	(63)
Cash flows from operating activities	3,892	3,384	3,414
Cash flows from investing activities
Capital expenditures	(385)	(412)	(495)
Proceeds from asset sales	142	21	0
Purchases of short-term investments	(3,107)	(3,907)	(2,802)
Proceeds from short-term investments	2,966	4,249	2,198
Other	7	46	60
Cash flows from investing activities	(377)	(3)	(1,039)
Cash flows from financing activities
Proceeds from issuance of long-term debt	498	986	1,492
Repayment of debt and commercial paper borrowings	(1,000)	(1,500)	(1,375)
Dividends paid	(1,323)	(1,175)	(819)
Stock repurchases	(2,831)	(2,868)	(1,800)
Proceeds from common stock transactions	616	1,314	523
Excess tax benefit from share-based payments	100	80	38
Other	(3)	(7)	(10)
Cash flows from financing activities	(3,943)	(3,170)	(1,951)
Net change in Cash and cash equivalents	(428)	211	424
Cash and cash equivalents at beginning of period	1,627	1,416	992
Cash and cash equivalents at end of period	$ 1,199	$ 1,627	$ 1,416