Consolidated Statements Of Cash Flows (USD $) In Millions, unless otherwise specified	12 Months Ended
	Jul. 28, 2012	Jul. 30, 2011	Jul. 31, 2010
Cash flows from operating activities:
Net income	$ 8,041	$ 6,490	$ 7,767
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation, amortization, and other	2,602	2,486	2,030
Share-based compensation expense	1,401	1,620	1,517
Provision for receivables	50	89	112
Deferred income taxes	(314)	(157)	(477)
Excess tax benefits from share-based compensation	(60)	(71)	(211)
Net gains on investments	(31)	(213)	(223)
Change in operating assets and liabilities, net of effects of acquisitions and divestitures:
Accounts receivable	272	298	(1,528)
Inventories	(287)	(147)	(158)
Financing receivables	(846)	(1,616)	(996)
Other assets	(674)	275	(98)
Accounts payable	(7)	(28)	139
Income taxes, net	418	(156)	55
Accrued compensation	(101)	(64)	565
Deferred revenue	727	1,028	1,531
Other liabilities	300	245	148
Net cash provided by operating activities	11,491	10,079	10,173
Cash flows from investing activities:
Purchases of investments	(41,810)	(37,130)	(48,690)
Proceeds from sales of investments	27,365	17,538	19,300
Proceeds from maturities of investments	12,103	18,117	23,697
Acquisition of property and equipment	(1,126)	(1,174)	(1,008)
Acquisition of businesses, net of cash and cash equivalents acquired	(375)	(266)	(5,279)
Purchases of investments in privately held companies	(380)	(204)	(137)
Return of investments in privately held companies	242	163	58
Other	166	22	128
Net cash used in investing activities	(3,815)	(2,934)	(11,931)
Cash flows from financing activities:
Issuances of common stock	1,372	1,831	3,278
Repurchases of common stock	(4,760)	(6,896)	(7,864)
Short-term borrowings, maturities less than 90 days, net	(557)	512	41
Issuances of debt, maturities greater than 90 days		4,109	4,944
Repayments of debt, maturities greater than 90 days		(3,113)
Excess tax benefits from share-based compensation	60	71	211
Dividends paid	(1,501)	(658)
Other	(153)	80	11
Net cash (used in) provided by financing activities	(5,539)	(4,064)	621
Net increase (decrease) in cash and cash equivalents	2,137	3,081	(1,137)
Cash and cash equivalents, beginning of fiscal year	7,662	4,581	5,718
Cash and cash equivalents, end of fiscal year	9,799	7,662	4,581
Cash paid for:
Interest	681	777	692
Income taxes	$ 2,014	$ 1,649	$ 2,068