Consolidated Statements Of Cash Flows - USD ($) $ in Millions	3 Months Ended
	Oct. 28, 2017	Oct. 29, 2016
Cash flows from operating activities:
Net income	$ 2,394	$ 2,322
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation, amortization, and other	566	599
Share-based compensation expense	392	372
Provision for receivables	(17)	15
Deferred income taxes	178	158
Excess tax benefits from share-based compensation	0	(91)
(Gains) losses on divestitures, investments and other, net	(56)	32
Change in operating assets and liabilities, net of effects of acquisitions and divestitures:
Accounts receivable	957	1,049
Inventories	(80)	44
Financing receivables	(333)	(900)
Other assets	8	191
Accounts payable	(235)	(63)
Income taxes, net	(419)	(440)
Accrued compensation	(215)	(333)
Deferred revenue	77	462
Other liabilities	(137)	(687)
Net cash provided by operating activities	3,080	2,730
Cash flows from investing activities:
Purchases of investments	(8,275)	(18,667)
Proceeds from sales of investments	2,682	11,337
Proceeds from maturities of investments	3,929	2,449
Acquisition of businesses, net of cash and cash equivalents acquired	(725)	(251)
Purchases of investments in privately held companies	(20)	(38)
Return of investments in privately held companies	81	24
Acquisition of property and equipment	(168)	(275)
Proceeds from sales of property and equipment	1	2
Other	0	23
Net cash used in investing activities	(2,495)	(5,396)
Cash flows from financing activities:
Issuances of common stock	9	88
Repurchases of common stock—repurchase program	(1,686)	(1,023)
Shares repurchased for tax withholdings on vesting of restricted stock units	(342)	(401)
Short-term borrowings, original maturities of 90 days or less, net	(2,498)	0
Issuances of debt	5,482	6,232
Repayments of debt	(748)	(1)
Excess tax benefits from share-based compensation	0	91
Dividends paid	(1,436)	(1,308)
Other	(31)	(60)
Net cash provided by (used in) financing activities	(1,250)	3,618
Net increase (decrease) in cash and cash equivalents	(665)	952
Cash and cash equivalents, beginning of period	11,708	7,631
Cash and cash equivalents, end of period	11,043	8,583
Supplemental cash flow information:
Cash paid for interest	283	248
Cash paid for income taxes, net	$ 810	$ 913