Consolidated Statements Of Cash Flows (USD $) In Millions, unless otherwise specified	3 Months Ended
	Oct. 26, 2013	Oct. 27, 2012
Cash flows from operating activities:
Net income	$ 1,996	$ 2,092
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation, amortization, and other	591	615
Share-based compensation expense	309	306
Provision for receivables	23	7
Deferred income taxes	130	135
Excess tax benefits from share-based compensation	(55)	(15)
(Gains) losses on investments and other, net	(108)	12
Change in operating assets and liabilities, net of effects of acquisitions and divestitures:
Accounts receivable	361	615
Inventories	22	42
Financing receivables	(37)	(110)
Other assets	28	99
Accounts payable	(29)	(19)
Income taxes, net	(389)	(372)
Accrued compensation	(460)	(359)
Deferred revenue	(307)	(295)
Other liabilities	574	(288)
Net Cash Provided by (Used in) Operating Activities, Continuing Operations	2,649	2,465
Cash flows from investing activities:
Purchases of investments	(8,835)	(8,213)
Proceeds from sales of investments	4,733	2,447
Proceeds from maturities of investments	4,058	4,388
Acquisition of property and equipment	(315)	(265)
Acquisition of businesses, net of cash and cash equivalents acquired	(2,447)	(4,912)
Payments to Acquire Other Investments	(134)	(9)
Return of Investments In Privately Held Companies	33	12
Proceeds from sales of property and equipment	156	24
Other	(4)	(2)
Net cash used in investing activities	(2,755)	(6,530)
Cash flows from financing activities:
Issuances of common stock	444	117
Repurchases of stock- repurchase program	(1,898)	(183)
Shares repurchased for tax withholdings on vesting of restricted stock units	(286)	(203)
Short-term borrowings, maturities less than 90 days, net	(2)	23
Issuances of debt, maturities greater than 90 days	4	0
Excess tax benefits from share-based compensation	55	15
Dividends paid	(914)	(744)
Other	32	14
Net cash used in financing activities	(2,565)	(961)
Net decrease in cash and cash equivalents	(2,671)	(5,026)
Cash and cash equivalents, beginning of period	7,925	9,799
Cash and cash equivalents, end of period	5,254	4,773
Cash paid for:
Interest	221	221
Cash paid for income taxes, net	$ 803	$ 776