Condensed Consolidated Statements of Cash Flows (Unaudited) (USD $) In Millions, unless otherwise specified	9 Months Ended
	Sep. 30, 2012	Sep. 30, 2011
Cash flows from operating activities:
Net income	$ 3,557	$ 2,749
Depreciation and amortization	815	799
Stock-based compensation expense	271	245
Other items, net	(72)	31
Changes in operating assets and liabilities, net of acquisitions:
Trade receivables, net	198	(386)
Inventories	(175)	(273)
Other assets	213	(243)
Accounts payable	189	(5)
Accrued income taxes	(85)	(329)
Other liabilities	159	947
Net cash provided by operating activities	5,070	3,535
Cash flows from investing activities:
Purchases of property, plant and equipment	(489)	(343)
Cash paid for acquisitions, net of cash acquired	(1,990)	(701)
Purchases of marketable securities	(18,864)	(18,481)
Proceeds from sales of marketable securities	12,544	18,373
Proceeds from maturities of marketable securities	878	575
Other	(38)	11
Net cash used in investing activities	(7,959)	(566)
Cash flows from financing activities:
Repayment of debt	(102)	(2,500)
Net proceeds from issuance of debt	4,933	2,973
Net proceeds from issuance of commercial paper	0	300
Repurchases of common stock	(3,390)	(3,017)
Dividends paid	(844)	(255)
Net proceeds from issuance of common stock in connection with the Company's equity award programs	1,129	126
Other	40	8
Net cash provided by (used in) financing activities	1,766	(2,365)
Increase (decrease) in cash and cash equivalents	(1,123)	604
Cash and cash equivalents at beginning of period	6,946	3,287
Cash and cash equivalents at end of period	$ 5,823	$ 3,891