Consolidated Statements Of Cash Flows (USD $) In Millions, unless otherwise specified	6 Months Ended
	Jan. 25, 2014	Jan. 26, 2013
Cash flows from operating activities:
Net income	$ 3,425	$ 5,235
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation, amortization, and other	1,203	1,232
Share-based compensation expense	656	608
Provision for receivables	56	(10)
Deferred income taxes	(26)	148
Excess tax benefits from share-based compensation	(73)	(32)
(Gains) losses on investments and other, net	(163)	5
Change in operating assets and liabilities, net of effects of acquisitions and divestitures:
Accounts receivable	1,134	100
Inventories	(77)	194
Financing receivables	245	(381)
Other assets	179	(63)
Accounts payable	(161)	(17)
Income taxes, net	(444)	(1,444)
Accrued compensation	(804)	(161)
Deferred revenue	(205)	407
Other liabilities	577	(7)
Net cash provided by operating activities	5,522	5,814
Cash flows from investing activities:
Purchases of investments	(15,874)	(14,234)
Proceeds from sales of investments	9,081	4,991
Proceeds from maturities of investments	7,988	8,652
Acquisition of property and equipment	(577)	(552)
Acquisition of businesses, net of cash and cash equivalents acquired	(2,784)	(6,035)
Purchases of investments in privately held companies	(263)	(116)
Return of investments in privately held companies	81	68
Proceeds from sales of property and equipment	164	34
Other	(6)	(4)
Net cash used in investing activities	(2,190)	(7,196)
Cash flows from financing activities:
Issuances of common stock	837	652
Repurchases of stock- repurchase program	(5,680)	(645)
Shares repurchased for tax withholdings on vesting of restricted stock units	(309)	(212)
Short-term borrowings, original maturities less than 90 days, net	998	4
Issuances of debt, maturities greater than 90 days	4	0
Repayments of debt	(22)	0
Excess tax benefits from share-based compensation	73	32
Dividends paid	(1,810)	(1,487)
Other	(9)	86
Net cash used in financing activities	(5,918)	(1,570)
Net decrease in cash and cash equivalents	(2,586)	(2,952)
Cash and cash equivalents, beginning of period	7,925	9,799
Cash and cash equivalents, end of period	5,339	6,847
Cash paid for:
Interest	340	341
Cash paid for income taxes, net	$ 1,340	$ 1,472