Consolidated Statements Of Cash Flows (USD $) In Millions, unless otherwise specified	12 Months Ended
	Jul. 27, 2013	Jul. 28, 2012	Jul. 30, 2011
Cash flows from operating activities:
Net income	$ 9,983	$ 8,041	$ 6,490
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation, amortization, and other	2,351	2,602	2,486
Share-based compensation expense	1,120	1,401	1,620
Provision for receivables	44	50	89
Deferred income taxes	(37)	(314)	(157)
Excess tax benefits from share-based compensation	(92)	(60)	(71)
Net losses (gains) on investments	9	(31)	(213)
Change in operating assets and liabilities, net of effects of acquisitions and divestitures:
Accounts receivable	(1,001)	272	298
Inventories	218	(287)	(147)
Financing receivables	(723)	(846)	(1,616)
Other assets	(27)	(674)	275
Accounts payable	164	(7)	(28)
Income taxes, net	(239)	418	(156)
Accrued compensation	330	(101)	(64)
Deferred revenue	598	727	1,028
Other liabilities	196	300	245
Net cash provided by operating activities	12,894	11,491	10,079
Cash flows from investing activities:
Purchases of investments	(36,608)	(41,810)	(37,130)
Proceeds from sales of investments	14,799	27,365	17,538
Proceeds from maturities of investments	17,909	12,103	18,117
Acquisition of property and equipment	(1,160)	(1,126)	(1,174)
Acquisition of businesses, net of cash and cash equivalents acquired	(6,766)	(375)	(266)
Purchases of investments in privately held companies	(225)	(380)	(204)
Return of investments in privately held companies	209	242	163
Other	74	166	22
Net cash used in investing activities	(11,768)	(3,815)	(2,934)
Cash flows from financing activities:
Issuances of common stock	3,338	1,372	1,831
Repurchases of common stock	(2,773)	(4,560)	(6,713)
Shares repurchased for tax withholdings on vesting of restricted stock units	(330)	(200)	(183)
Short-term borrowings, maturities less than 90 days, net	(20)	(557)	512
Issuances of debt, maturities greater than 90 days	24	0	4,109
Repayments of debt, maturities greater than 90 days	(16)	0	(3,113)
Excess tax benefits from share-based compensation	92	60	71
Dividends paid	(3,310)	(1,501)	(658)
Other	(5)	(153)	80
Net cash used in financing activities	(3,000)	(5,539)	(4,064)
Net (decrease) increase in cash and cash equivalents	(1,874)	2,137	3,081
Cash and cash equivalents, beginning of fiscal year	9,799	7,662	4,581
Cash and cash equivalents, end of fiscal year	7,925	9,799	7,662
Cash paid for:
Interest	682	681	777
Income taxes, net	$ 1,519	$ 2,014	$ 1,649