Consolidated statements of cash flows (USD $) In Millions, unless otherwise specified	6 Months Ended
	Jun. 30, 2012	Jun. 30, 2011
Cash flows from operating activities:
Net income	$ 711	$ 1,338
Adjustments to net income:
Depreciation	484	444
Stock-based compensation	133	110
Amortization of acquisition-related intangibles	171	13
Deferred income taxes	17	(15)
Increase (decrease) from changes in:
Accounts receivable	(88)	(146)
Inventories	(123)	(242)
Prepaid expenses and other current assets	55	(12)
Accounts payable and accrued expenses	(114)	(25)
Accrued compensation	(136)	(201)
Income taxes payable	(36)	(103)
Other	50	(16)
Cash flows from operating activities	1,124	1,145
Cash flows from investing activities:
Additions to property, plant and equipment	(249)	(470)
Proceeds from insurance recovery	0	2
Purchases of short-term investments	(657)	(1,688)
Proceeds from short-term investments	1,466	1,616
Purchases of long-term investments	(1)	(3)
Proceeds from long-term investments	32	64
Cash flows from investing activities	591	(479)
Cash flows from financing activities:
Proceeds from issuance of long-term debt	0	3,497
Issuance costs for long-term debt	0	(12)
Repayment of debt and commercial paper borrowings	(875)	0
Dividends paid	(390)	(303)
Proceeds from common stock transactions	327	530
Excess tax benefit from share-based payments	23	27
Stock repurchases	(600)	(1,223)
Cash flows from financing activities	(1,515)	2,516
Net change in cash and cash equivalents	200	3,182
Cash and cash equivalents, beginning of period	992	1,319
Cash and cash equivalents, end of period	$ 1,192	$ 4,501