Consolidated Statements Of Cash Flows (USD $) In Millions, unless otherwise specified	9 Months Ended
	Apr. 27, 2013	Apr. 28, 2012
Cash flows from operating activities:
Net income	$ 7,713	$ 6,124
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation, amortization, and other	1,760	1,816
Share-based compensation expense	880	1,032
Provision for receivables	46	45
Deferred income taxes	48	75
Excess tax benefits from share-based compensation	(48)	(57)
Net losses (gains) on investments	23	(38)
Change in operating assets and liabilities, net of effects of acquisitions and divestitures:
Accounts receivable	(439)	660
Inventories	238	(113)
Financing receivables	(448)	(762)
Other assets	(41)	(495)
Accounts payable	91	34
Income taxes, net	(642)	151
Accrued compensation	(48)	(451)
Deferred revenue	(169)	482
Other liabilities	(56)	(100)
Net cash provided by operating activities	8,908	8,403
Cash flows from investing activities:
Purchases of investments	23,969	32,690
Proceeds from sales of investments	7,279	19,591
Proceeds from maturities of investments	13,234	7,930
Acquisition of property and equipment	(843)	(830)
Acquisition of businesses, net of cash and cash equivalents acquired	(6,371)	(333)
Purchases of investments in privately held companies	(140)	(299)
Return of Investments In Privately Held Companies	110	212
Other	47	175
Net cash used in investing activities	(10,653)	(6,244)
Cash flows from financing activities:
Issuances of common stock	1,193	1,115
Repurchases of stock- repurchase program	(1,554)	(2,708)
Stock repurchased for tax withholdings on vesting of restricted stock units, value	(249)	(160)
Short-term borrowings, maturities less than 90 days, net	(20)	(505)
Excess tax benefits from share-based compensation	48	57
Dividends paid	(2,392)	(1,076)
Other	42	(83)
Net cash used in financing activities	(2,932)	(3,360)
Net decrease in cash and cash equivalents	(4,677)	(1,201)
Cash and cash equivalents, beginning of period	9,799	7,662
Cash and cash equivalents, end of period	5,122	6,461
Cash paid for:
Interest	562	561
Income taxes, net	$ 1,236	$ 1,424