Consolidated Statements of Cash Flows - USD ($) $ in Millions	9 Months Ended
	Apr. 28, 2018	Apr. 29, 2017
Cash flows from operating activities:
Net income (loss)	$ (3,693)	$ 7,185
Adjustments to reconcile net income (loss) to net cash provided by operating activities:
Depreciation, amortization, and other	1,676	1,708
Share-based compensation expense	1,184	1,124
Provision for receivables	(104)	20
Deferred income taxes	1,013	(125)
Excess tax benefits from share-based compensation	0	(125)
(Gains) losses on divestitures, investments and other, net	(159)	156
Change in operating assets and liabilities, net of effects of acquisitions and divestitures:
Accounts receivable	1,064	1,253
Inventories	(289)	(149)
Financing receivables	(165)	(773)
Other assets	(135)	140
Accounts payable	148	149
Income taxes, net	8,795	(112)
Accrued compensation	53	(154)
Deferred revenue	415	592
Other liabilities	(237)	(1,014)
Net cash provided by operating activities	9,566	9,875
Cash flows from investing activities:
Purchases of investments	(14,132)	(35,562)
Proceeds from sales of investments	12,422	24,414
Proceeds from maturities of investments	12,259	8,390
Acquisition of businesses, net of cash and cash equivalents acquired	(2,789)	(3,211)
Proceeds from business divestitures	27	0
Purchases of investments in privately held companies	(126)	(172)
Return of investments in privately held companies	163	168
Acquisition of property and equipment	(620)	(756)
Proceeds from sales of property and equipment	54	6
Other	(3)	35
Net cash provided by (used in) investing activities	7,255	(6,688)
Cash flows from financing activities:
Issuances of common stock	318	418
Repurchases of common stock—repurchase program	(11,562)	(2,516)
Shares repurchased for tax withholdings on vesting of restricted stock units	(541)	(497)
Short-term borrowings, original maturities of 90 days or less, net	(2,502)	2,000
Issuances of debt	6,877	6,232
Repayments of debt	(9,875)	(4,151)
Excess tax benefits from share-based compensation	0	125
Dividends paid	(4,433)	(4,063)
Other	(92)	(250)
Net cash used in financing activities	(21,810)	(2,702)
Net increase (decrease) in cash and cash equivalents	(4,989)	485
Cash and cash equivalents, beginning of period	11,708	7,631
Cash and cash equivalents, end of period	6,719	8,116
Supplemental cash flow information:
Cash paid for interest	739	727
Cash paid for income taxes, net	$ 3,332	$ 2,159