Consolidated Statements of Cash Flows (USD $) In Millions	9 Months Ended
	Sep. 30, 2011	Sep. 30, 2010
Cash flows from operating activities:
Net income	$ 1,938	$ 2,286
Adjustments to net income:
Depreciation	657	639
Stock-based compensation	203	143
Amortization of acquisition-related intangibles	26	36
Gains on sales of assets	(5)	0
Deferred income taxes	(9)	(45)
Increase (decrease) from changes in:
Accounts receivable	(124)	(468)
Inventories	(220)	(213)
Prepaid expenses and other current assets	(11)	(30)
Accounts payable and accrued expenses	70	97
Accrued compensation	(142)	(97)
Income taxes payable	(89)	182
Other	(9)	60
Net cash provided by operating activities	2,285	2,590
Cash flows from investing activities:
Additions to property, plant and equipment	(663)	(898)
Proceeds from asset sales and insurance recovery	16	0
Purchases of short-term investments	(2,463)	(1,811)
Sales, redemptions and maturities of short-term investments	3,254	2,175
Purchases of long-term investments	(4)	(6)
Sales and redemptions of long-term investments	75	90
Business acquisitions, net of cash acquired	(5,390)	(59)
Net cash used in investing activities	(5,175)	(509)
Cash flows from financing activities:
Proceeds from issuance of debt	4,697	0
Issuance costs for long-term debt	(12)	0
Dividends paid	(451)	(439)
Sales and other common stock transactions	563	120
Excess tax benefit from share-based payments	28	3
Stock repurchases	(1,673)	(1,854)
Net cash provided by (used in) financing activities	3,152	(2,170)
Net increase (decrease) in cash and cash equivalents	262	(89)
Cash and cash equivalents, beginning of period	1,319	1,182
Cash and cash equivalents, end of period	$ 1,581	$ 1,093