Consolidated Statements of Cash Flows (USD $) In Millions	12 Months Ended
	Sep. 25, 2011	Sep. 26, 2010	Sep. 27, 2009
Operating Activities:
Net income	$ 4,242	$ 3,247	$ 1,592
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	1,061	666	635
Goodwill impairment	114	0	0
Revenues related to non-monetary exchanges	(123)	(130)	(114)
Income tax provision (less than) in excess of income tax payments	(1,204)	116	(33)
Non-cash portion of share-based compensation expense	824	612	584
Incremental tax benefit from stock options exercised	(183)	(45)	(79)
Net realized gains on marketable securities and other investments	(337)	(405)	(137)
Net impairment losses on marketable securities and other investments	52	125	763
Other items, net	12	(64)	(32)
Changes in assets and liabilities, net of effects of acquisitions:
Accounts receivable, net	(140)	(18)	3,083
Inventories	(62)	(80)	69
Other assets	(70)	(60)	(58)
Trade accounts payable	(26)	148	57
Payroll, benefits and other liabilities	572	(229)	984
Unearned revenues	168	193	(142)
Net cash provided by operating activities	4,900	4,076	7,172
Investing Activities:
Capital expenditures	(593)	(426)	(761)
Advance payment on spectrum (Note 9)	0	(1,064)	0
Purchases of available-for-sale securities	(10,948)	(8,973)	(10,443)
Proceeds from sale of available-for-sale securities	10,661	10,440	5,274
Purchases of other marketable securities	0	(850)	0
Cash received for partial settlement of investment receivables	18	34	349
Atheros acquisition, net of cash acquired (Note 12)	(3,130)	0	0
Other investments and acquisitions, net of cash acquired	(494)	(94)	(54)
Change in collateral held under securities lending	0	0	173
Other items, net	(3)	94	5
Net cash used by investing activities	(4,489)	(839)	(5,457)
Financing Activities:
Borrowing under loans payable	1,555	1,064	0
Repayment of loans payable	(1,555)	0	0
Proceeds from issuance of common stock	2,647	689	642
Proceeds from put option premiums	75	0	0
Proceeds from issuance of subsidiary shares to noncontrolling interests (Note 7)	62	0	0
Incremental tax benefit from stock options exercised	183	45	79
Repurchase and retirement of common stock	(142)	(3,016)	(285)
Dividends paid	(1,346)	(1,177)	(1,093)
Change in obligation under securities lending	46	0	(173)
Other items, net	(7)	(10)	(3)
Net cash provided (used) by financing activities	1,518	(2,405)	(833)
Effect of exchange rate changes on cash	(14)	(2)	(5)
Net increase in cash and cash equivalents	1,915	830	877
Cash and cash equivalents at beginning of year	3,547	2,717	1,840
Cash and cash equivalents at end of year	$ 5,462	$ 3,547	$ 2,717