Consolidated statements of cash flows (USD $) In Millions, unless otherwise specified	9 Months Ended
	Sep. 30, 2013	Sep. 30, 2012
Cash flows from operating activities:
Net income	$ 1,651	$ 1,495
Adjustments to net income:
Depreciation	666	725
Amortization of acquisition-related intangibles	253	257
Stock-based compensation	221	199
Gains on sales of assets	(6)	0
Deferred income taxes	(9)	136
Gain on transfer of Japan substitutional pension	0	(144)
Increase (decrease) from changes in:
Accounts receivable	(302)	(70)
Inventories	31	(86)
Prepaid expenses and other current assets	(54)	80
Accounts payable and accrued expenses	(297)	(123)
Accrued compensation	37	(41)
Income taxes payable	(29)	(177)
Changes in funded status of retirement plans	82	59
Other	(59)	19
Cash flows from operating activities	2,185	2,329
Cash flows from investing activities:
Capital expenditures	(305)	(399)
Proceeds from asset sales	21	0
Purchases of short-term investments	(3,177)	(2,141)
Proceeds from short-term investments	3,564	1,639
Purchases of long-term investments	(1)	(1)
Proceeds from long-term investments	18	52
Cash flows from investing activities	120	(850)
Cash flows from financing activities:
Proceeds from issuance of debt	986	1,492
Repayment of debt and commercial paper borrowings	(1,500)	(1,375)
Dividends paid	(849)	(584)
Stock repurchases	(2,134)	(1,200)
Proceeds from common stock transactions	1,146	390
Excess tax benefit from share-based payments	72	26
Other	(7)	(10)
Cash flows from financing activities	(2,286)	(1,261)
Net change in cash and cash equivalents	19	218
Cash and cash equivalents, beginning of period	1,416	992
Cash and cash equivalents, end of period	$ 1,435	$ 1,210