Consolidated Statements of Cash Flows (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Cash flows from operating activities:
Net income	$ 5,081	$ 4,345	$ 3,683
Depreciation and amortization	1,286	1,088	1,060
Stock-based compensation expense	403	362	341
Deferred income taxes	(189)	28	(328)
Property, plant and equipment impairments	19	178	6
Other items, net	84	(74)	63
Changes in operating assets and liabilities, net of acquisitions:
Trade receivables, net	(38)	348	(557)
Inventories	(7)	(150)	(383)
Other assets	(59)	124	(204)
Accounts payable	(184)	161	(95)
Accrued income taxes	(326)	87	(20)
Legal reserve	0	(780)	780
Other liabilities	221	165	773
Net cash provided by operating activities	6,291	5,882	5,119
Cash flows from investing activities:
Purchases of property, plant and equipment	(693)	(689)	(567)
Cash paid for acquisitions, net of cash acquired	(9,434)	(2,390)	(701)
Purchases of marketable securities	(21,965)	(26,241)	(21,183)
Proceeds from sales of marketable securities	19,123	17,372	20,871
Proceeds from maturities of marketable securities	5,090	1,994	749
Change in restricted investments, net	(520)	0	0
Other	(70)	(36)	45
Net cash used in investing activities	(8,469)	(9,990)	(786)
Cash flows from financing activities:
Net proceeds from issuance of debt	8,054	4,933	10,387
Repayment of debt	(3,371)	(123)	(2,500)
Net proceeds from issuance of commercial paper	0	0	762
Repayments of commercial paper	0	0	(762)
Repurchases of common stock	(832)	(4,607)	(8,315)
Dividends paid	(1,415)	(1,118)	(500)
Net proceeds from issuance of common stock in connection with the Company's equity award programs	296	1,288	242
Other	(6)	46	12
Net cash provided by (used in) financing activities	2,726	419	(674)
Increase (decrease) in cash and cash equivalents	548	(3,689)	3,659
Cash and cash equivalents at beginning of period	3,257	6,946	3,287
Cash and cash equivalents at end of period	$ 3,805	$ 3,257	$ 6,946