Consolidated Statements Of Cash Flows - USD ($) $ in Millions	3 Months Ended
	Oct. 24, 2015	Oct. 25, 2014
Cash flows from operating activities:
Net income	$ 2,430	$ 1,828
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation, amortization, and other	507	599
Share-based compensation expense	376	369
Provision for receivables	7	43
Deferred income taxes	193	236
Excess tax benefits from share-based compensation	(73)	(71)
(Gains) losses on investments and other, net	(4)	29
Change in operating assets and liabilities, net of effects of acquisitions and divestitures:
Accounts receivable	631	723
Inventories	130	(107)
Financing receivables	(206)	(2)
Other assets	129	2
Accounts payable	4	(5)
Income taxes, net	(315)	(398)
Accrued compensation	(434)	(495)
Deferred revenue	(19)	(328)
Other liabilities	(590)	68
Net cash provided by operating activities	2,766	2,491
Cash flows from investing activities:
Purchases of investments	(10,823)	(9,761)
Proceeds from sales of investments	6,675	3,450
Proceeds from maturities of investments	4,133	3,906
Acquisition of businesses, net of cash and cash equivalents acquired	(614)	(184)
Purchases of investments in privately held companies	(78)	(50)
Return of investments in privately held companies	24	42
Acquisition of property and equipment	(262)	(285)
Proceeds from sales of property and equipment	6	3
Other	(11)	2
Net cash used in investing activities	(950)	(2,877)
Cash flows from financing activities:
Issuances of common stock	385	353
Repurchases of common stock—repurchase program	(1,210)	(1,088)
Shares repurchased for tax withholdings on vesting of restricted stock units	(382)	(342)
Short-term borrowings, original maturities less than 90 days, net	(4)	(4)
Repayments of debt	(852)	(3)
Excess tax benefits from share-based compensation	73	71
Dividends paid	(1,068)	(973)
Other	123	33
Net cash used in financing activities	(2,935)	(1,953)
Net decrease in cash and cash equivalents	(1,119)	(2,339)
Cash and cash equivalents, beginning of period	6,877	6,726
Cash and cash equivalents, end of period	5,758	4,387
Supplemental cash flow information:
Cash paid for interest	264	263
Cash paid for income taxes, net	$ 828	$ 694