Consolidated Statements Of Cash Flows (USD $) In Millions, unless otherwise specified	3 Months Ended
	Oct. 25, 2014	Oct. 26, 2013
Cash flows from operating activities:
Net income	$ 1,828	$ 1,996
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation, amortization, and other	596	591
Share-based compensation expense	369	309
Provision for receivables	43	23
Deferred income taxes	236	130
Excess tax benefits from share-based compensation	(71)	(55)
(Gains) losses on investments and other, net	29	(108)
Change in operating assets and liabilities, net of effects of acquisitions and divestitures:
Accounts receivable	723	361
Inventories	(107)	22
Financing receivables	(2)	(37)
Other assets	5	28
Accounts payable	(5)	(29)
Income taxes, net	(398)	(389)
Accrued compensation	(495)	(460)
Deferred revenue	(328)	(307)
Other liabilities	68	574
Net cash provided by operating activities	2,491	2,649
Cash flows from investing activities:
Purchases of investments	(9,761)	(8,835)
Proceeds from sales of investments	3,450	4,733
Proceeds from maturities of investments	3,906	4,058
Acquisition of businesses, net of cash and cash equivalents acquired	(184)	(2,447)
Purchases of investments in privately held companies	(50)	(134)
Return of investments in privately held companies	42	33
Acquisition of property and equipment	(285)	(315)
Proceeds from sales of property and equipment	3	156
Other	2	(4)
Net cash used in investing activities	(2,877)	(2,755)
Cash flows from financing activities:
Issuances of common stock	353	444
Repurchases of common stock - repurchase program	(1,088)	(1,898)
Shares repurchased for tax withholdings on vesting of restricted stock units	(342)	(286)
Short-term borrowings, original maturities less than 90 days, net	(4)	(2)
Issuances of debt	0	4
Repayments of debt	(3)	0
Excess tax benefits from share-based compensation	71	55
Dividends paid	(973)	(914)
Other	33	32
Net cash used in financing activities	(1,953)	(2,565)
Net (decrease) increase in cash and cash equivalents	(2,339)	(2,671)
Cash and cash equivalents, beginning of period	6,726	7,925
Cash and cash equivalents, end of period	4,387	5,254
Supplemental cash flow information:
Cash paid for interest	263	221
Cash paid for income taxes, net	$ 694	$ 803