Cisco Systems (CSCO) 10-Q 21 Nov 17 2018 Q1 Quarterly report Financial data

Document and Entity Information

Document and Entity Information - shares	3 Months Ended
	Oct. 28, 2017	Nov. 16, 2017
Document Documentand Entity Information [Abstract]
Document Type	10-Q
Amendment Flag	false
Document Period End Date	Oct. 28, 2017
Document Fiscal Period Focus	Q1
Document Fiscal Year Focus	2,018
Trading Symbol	CSCO
Entity Registrant Name	CISCO SYSTEMS, INC.
Entity Central Index Key	858,877
Current Fiscal Year End Date	--07-28
Entity Filer Category	Large Accelerated Filer
Entity Common Stock, Shares Outstanding		4,943,622,124

Consolidated Balance Sheets

Consolidated Balance Sheets - USD ($) $ in Millions	Oct. 28, 2017	Jul. 29, 2017
Current assets:
Cash and cash equivalents	$ 11,043	$ 11,708
Investments	60,545	58,784
Accounts receivable, net of allowance for doubtful accounts of $193 at October 28, 2017 and $211 at July 29, 2017	4,206	5,146
Inventories	1,693	1,616
Financing receivables, net	5,038	4,856
Other current assets	1,555	1,593
Total current assets	84,080	83,703
Property and equipment, net	3,202	3,322
Financing receivables, net	4,876	4,738
Goodwill	30,233	29,766
Purchased intangible assets, net	2,677	2,539
Deferred tax assets	4,006	4,239
Other assets	1,448	1,511
TOTAL ASSETS	130,522	129,818
Current liabilities:
Short-term debt	10,239	7,992
Accounts payable	1,155	1,385
Income taxes payable	86	98
Accrued compensation	2,684	2,895
Deferred revenue	10,920	10,821
Other current liabilities	4,200	4,392
Total current liabilities	29,284	27,583
Long-term debt	25,684	25,725
Income taxes payable	883	1,250
Deferred revenue	7,645	7,673
Other long-term liabilities	1,476	1,450
Total liabilities	64,972	63,681
Commitments and contingencies (Note 12)
Cisco shareholders’ equity:
Preferred stock, no par value: 5 shares authorized; none issued and outstanding	0	0
Common stock and additional paid-in capital, $0.001 par value: 20,000 shares authorized; 4,951 and 4,983 shares issued and outstanding at October 28, 2017 and July 29, 2017, respectively	44,872	45,253
Retained earnings	20,647	20,838
Accumulated other comprehensive income (loss)	31	46
Total equity	65,550	66,137
TOTAL LIABILITIES AND EQUITY	$ 130,522	$ 129,818

Consolidated Balance Sheets (Pa

Consolidated Balance Sheets (Parenthetical) - USD ($) $ in Millions	Oct. 28, 2017	Jul. 29, 2017
Statement of Financial Position [Abstract]
Accounts receivable, allowance for doubtful accounts	$ 193	$ 211
Preferred stock, shares authorized (in shares)	5,000,000	5,000,000
Preferred stock, issued (in shares)	0	0
Preferred stock, outstanding (in shares)	0	0
Common stock, par value (in dollars per share)	$ 0.001	$ 0.001
Common stock, shares authorized (in shares)	20,000,000,000	20,000,000,000
Common stock, shares issued (in shares)	4,951,000,000	4,983,000,000
Common stock, shares outstanding (in shares)	4,951,000,000	4,983,000,000

Consolidated Statements Of Oper

Consolidated Statements Of Operations - USD ($) shares in Millions, $ in Millions	3 Months Ended
	Oct. 28, 2017	Oct. 29, 2016
REVENUE:
Product	$ 9,054	$ 9,302
Service	3,082	3,050
Total revenue	12,136	12,352
COST OF SALES:
Product	3,615	3,403
Service	1,094	1,065
Total cost of sales	4,709	4,468
GROSS MARGIN	7,427	7,884
OPERATING EXPENSES:
Research and development	1,567	1,545
Sales and marketing	2,334	2,418
General and administrative	557	555
Amortization of purchased intangible assets	61	78
Restructuring and other charges	152	411
Total operating expenses	4,671	5,007
OPERATING INCOME	2,756	2,877
Interest income	379	295
Interest expense	(235)	(198)
Other income (loss), net	62	(21)
Interest and other income (loss), net	206	76
INCOME BEFORE PROVISION FOR INCOME TAXES	2,962	2,953
Provision for income taxes	568	631
NET INCOME	$ 2,394	$ 2,322
Net income per share:
Basic (in dollars per share)	$ 0.48	$ 0.46
Diluted (in dollars per share)	$ 0.48	$ 0.46
Shares used in per-share calculation:
Basic (in shares)	4,959	5,027
Diluted (in shares)	4,994	5,066
Cash dividends declared per common share (in dollars per share)	$ 0.29	$ 0.26

Consolidated Statements Of Comp

Consolidated Statements Of Comprehensive Income - USD ($) $ in Millions	3 Months Ended
	Oct. 28, 2017	Oct. 29, 2016
Statement of Comprehensive Income [Abstract]
Net income	$ 2,394	$ 2,322
Available-for-sale investments:
Change in net unrealized gains and losses, net of tax benefit (expense) of $(23) and $81 for the three months ended October 28, 2017 and October 29, 2016, respectively	(5)	(121)
Net (gains) losses reclassified into earnings, net of tax (benefit) expense of $10 and $5 for the three months ended October 28, 2017 and October 29, 2016, respectively	(23)	(10)
Total- Available-for-sale investments	(28)	(131)
Cash flow hedging instruments:
Change in unrealized gains and losses, net of tax benefit (expense) of $(1) and $3 for the three months ended October 28, 2017 and October 29, 2016, respectively	7	(43)
Net (gains) losses reclassified into earnings, net of tax (benefit) expense of $2 and $(1) for the three months ended October 28, 2017 and October 29, 2016, respectively	(11)	11
Total- Cash flow hedging instruments	(4)	(32)
Net change in cumulative translation adjustment and actuarial gains and losses net of tax benefit (expense) of $(2) and $(1) for the three months ended October 28, 2017 and October 29, 2016, respectively	17	(27)
Other comprehensive income (loss)	(15)	(190)
Comprehensive income	2,379	2,132
Comprehensive (income) loss attributable to noncontrolling interests	0	(8)
Comprehensive income attributable to Cisco Systems, Inc.	$ 2,379	$ 2,124

Consolidated Statements Of Com6

Consolidated Statements Of Comprehensive Income (Parenthetical) - USD ($) $ in Millions	3 Months Ended
	Oct. 28, 2017	Oct. 29, 2016
Statement of Comprehensive Income [Abstract]
Change in net unrealized gains, tax benefit (expense)	$ (23)	$ 81
Net (gains) losses reclassified into earnings, tax expense (benefit)	10	5
Change in unrealized gains and losses, tax benefit (expense)	(1)	3
Net (gains) losses reclassified into earnings, tax expense (benefit)	2	(1)
Net change in cumulative translation adjustment and actuarial gains and losses, tax benefit (expense)	$ (2)	$ (1)

Consolidated Statements Of Cash

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

Consolidated Statements Of Equi

Consolidated Statements Of Equity - USD ($) $ in Millions	Total	Shares of Common Stock	Common Stock and Additional Paid-In Capital	Retained Earnings	Accumulated Other Comprehensive Income (Loss)	Total Cisco Shareholders’ Equity	Non-controlling Interests
Beginning balance (in shares) at Jul. 30, 2016		5,029,000,000
Beginning balance at Jul. 30, 2016	$ 63,585		$ 44,516	$ 19,396	$ (326)	$ 63,586	$ (1)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	2,322			2,322		2,322
Other comprehensive income (loss)	(190)				(198)	(198)	8
Issuance of common stock (in shares)		40,000,000
Issuance of common stock	88		88			88
Repurchase of common stock (in shares)		(32,000,000)
Repurchase of common stock	$ (1,001)		(285)	(716)		(1,001)
Shares repurchased for tax withholdings on vesting of restricted stock units (in shares)	(13,000,000)	(13,000,000)
Shares repurchased for tax withholdings on vesting of restricted stock units	$ (401)		(401)			(401)
Cash dividends declared	(1,308)			(1,308)		(1,308)
Tax effects from employee stock incentive plans	(60)		(60)			(60)
Share-based compensation	372		372			372
Purchase acquisitions and other	6		6			6
Ending Balance (in shares) at Oct. 29, 2016		5,024,000,000
Ending Balance at Oct. 29, 2016	63,413		44,236	19,694	(524)	63,406	7
Beginning balance (in shares) at Jul. 29, 2017		4,983,000,000
Beginning balance at Jul. 29, 2017	66,137		45,253	20,838	46	66,137	0
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	2,394			2,394		2,394
Other comprehensive income (loss)	(15)				(15)	(15)
Issuance of common stock (in shares)		30,000,000
Issuance of common stock	$ 9		9			9
Repurchase of common stock (in shares)	(51,000,000)	(51,000,000)
Repurchase of common stock	$ (1,620)		(462)	(1,158)		(1,620)
Shares repurchased for tax withholdings on vesting of restricted stock units (in shares)	(11,000,000)	(11,000,000)
Shares repurchased for tax withholdings on vesting of restricted stock units	$ (342)		(342)			(342)
Cash dividends declared	(1,436)			(1,436)		(1,436)
Cumulative effect of adoption of accounting standard	9			9		9
Share-based compensation	392		392			392
Purchase acquisitions and other	22		22			22
Ending Balance (in shares) at Oct. 28, 2017		4,951,000,000
Ending Balance at Oct. 28, 2017	$ 65,550		$ 44,872	$ 20,647	$ 31	$ 65,550	$ 0

Consolidated Statements Of Equ9

Consolidated Statements Of Equity (Parenthetical) - $ / shares	3 Months Ended
	Oct. 28, 2017	Oct. 29, 2016
Statement of Stockholders' Equity [Abstract]
Cash dividends declared (in dollars per share)	$ 0.29	$ 0.26

Supplemental Information

Supplemental Information	3 Months Ended
	Oct. 28, 2017
Stockholders' Equity Note [Abstract]
Supplemental Information	Supplemental Information In September 2001, the Company’s Board of Directors authorized a stock repurchase program. As of October 28, 2017 , the Company’s Board of Directors had authorized an aggregate repurchase of up to $112 billion of common stock under this program with no termination date. For additional information regarding stock repurchase, see Note 13 to the Consolidated Financial Statements. The stock repurchases since the inception of this program and the related impacts on Cisco shareholders’ equity are summarized in the following table (in millions): Shares of Common Stock Common Stock and Additional Paid-In Capital Retained Earnings Total Cisco Shareholders’ Equity Repurchases of common stock under the repurchase program 4,760 $ 25,407 $ 76,516 $ 101,923

Basis of Presentation

Basis of Presentation	3 Months Ended
	Oct. 28, 2017
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Basis of Presentation	Basis of Presentation The fiscal year for Cisco Systems, Inc. (the “Company” or “Cisco”) is the 52 or 53 weeks ending on the last Saturday in July. Fiscal 2018 and fiscal 2017 are each 52-week fiscal years. The Consolidated Financial Statements include the accounts of Cisco and its subsidiaries. All intercompany accounts and transactions have been eliminated. The Company conducts business globally and is primarily managed on a geographic basis in the following three geographic segments: the Americas; Europe, Middle East, and Africa (EMEA); and Asia Pacific, Japan, and China (APJC). The accompanying financial data as of October 28, 2017 and for the three months ended October 28, 2017 and October 29, 2016 has been prepared by the Company, without audit, pursuant to the rules and regulations of the U.S. Securities and Exchange Commission ("SEC"). Certain information and footnote disclosures normally included in financial statements prepared in accordance with generally accepted accounting principles in the United States ("GAAP") have been condensed or omitted pursuant to such rules and regulations. The July 29, 2017 Consolidated Balance Sheet was derived from audited financial statements, but does not include all disclosures required by accounting principles generally accepted in the United States. However, the Company believes that the disclosures are adequate to make the information presented not misleading. These Consolidated Financial Statements should be read in conjunction with the Consolidated Financial Statements and the notes thereto included in the Company’s Annual Report on Form 10-K for the fiscal year ended July 29, 2017 . The Company consolidates its investments in a venture fund managed by SOFTBANK Corp. and its affiliates (“SOFTBANK”) as this is a variable interest entity and the Company is the primary beneficiary. The noncontrolling interests attributed to SOFTBANK are presented as a separate component from the Company’s equity in the equity section of the Consolidated Balance Sheets. SOFTBANK’s share of the earnings in the venture fund are not presented separately in the Consolidated Statements of Operations as these amounts are not material for any of the fiscal periods presented. In the opinion of management, all normal recurring adjustments necessary to present fairly the consolidated balance sheet as of October 28, 2017 ; the results of operations and the statements of comprehensive income, the statements of cash flows and equity for the three months ended October 28, 2017 and October 29, 2016 , as applicable, have been made. The results of operations for the three months ended October 28, 2017 are not necessarily indicative of the operating results for the full fiscal year or any future periods. Certain reclassifications have been made to the amounts in prior periods in order to conform to the current period’s presentation. The Company has evaluated subsequent events through the date that the financial statements were issued.

Recent Accounting Pronouncement

Recent Accounting Pronouncements	3 Months Ended
	Oct. 28, 2017
Accounting Policies [Abstract]
Recent Accounting Pronouncements	Recent Accounting Pronouncements (a) New Accounting Updates Recently Adopted Share-Based Compensation In March 2016, the FASB issued an accounting standard update that impacts the accounting for share-based payment transactions, including income tax consequences, classification of awards as either equity or liabilities, and classification on the Consolidated Statements of Cash Flows. Cisco adopted this accounting standard update beginning the first quarter of fiscal 2018 on a prospective basis. This resulted in an overall decrease in the effective tax rate for the first quarter of fiscal 2018 due to recognition of excess tax benefits from share-based compensation. The application of this accounting standard update did not have a material impact on the Company's Consolidated Financial Statements. (b) Recent Accounting Standards or Updates Not Yet Effective Revenue Recognition In May 2014, the FASB issued a new accounting standard related to revenue recognition. The new standard will supersede nearly all U.S. GAAP on revenue recognition and eliminate industry-specific guidance. The underlying principle of the new standard is to recognize revenue when a customer obtains control of promised goods or services at an amount that reflects the consideration that is expected to be received in exchange for those goods or services. It also requires increased disclosures including the nature, amount, timing, and uncertainty of revenues and cash flows related to contracts with customers. The standard allows two methods of adoption: i) retrospectively to each prior period presented (“full retrospective method”), or ii) retrospectively with the cumulative effect recognized in retained earnings as of the date of adoption ("modified retrospective method"). Cisco will adopt the new standard using the modified retrospective method at the beginning of its first quarter of fiscal 2019. Cisco is on schedule in establishing new accounting policies, implementing systems and processes (including more extensive use of estimates), and internal controls necessary to support the requirements of the new standard. Cisco has completed its preliminary assessment of the financial statement impact of the new standard, as discussed below, and will continue to update that assessment as more information becomes available. The new standard will primarily impact Cisco’s revenue recognition for software arrangements and sales to two-tier distributors. In both areas, the new standard will accelerate the recognition of revenue. The table below details both the current and expected revenue recognition timing in these areas: Current Revenue Standard New Revenue Standard Software arrangements: Perpetual software licenses Upfront Upfront Term software licenses Ratable Upfront Security software licenses Ratable Ratable Enterprise license agreements Ratable Upfront Software support services Ratable Ratable Software-as-a-service Ratable Ratable Two-tier distribution Sell-Through Sell-In Cisco expects that the new standard will not have a material impact on total revenue in the year of adoption based on two factors: i) revenue will be accelerated consistent with the changes in timing as indicated in the preceding table, largely offset by ii) the reduction of revenue from software arrangements where revenue was previously deferred in prior periods and recognized ratably over time as required under the current standard. This preliminary assessment is based on the types and number of revenue arrangements currently in place. The exact impact of the new standard will be dependent on facts and circumstances at adoption and could vary from quarter to quarter. In addition to the above revenue recognition timing impacts, the new standard will require incremental contract acquisition costs (such as sales commissions) for customer contracts to be capitalized and amortized over the contract period. Currently, these costs are expensed as incurred. Cisco will be required to record cumulative effect adjustments to retained earnings upon adopting the new standard at the beginning of fiscal 2019. The most significant of these adjustments will be to reduce product deferred revenue and increase retained earnings at the date of adoption to reflect revenue that would have been already recognized under the new standard related to existing arrangements. There will also be an adjustment to increase accounts receivable and reduce inventories related to the changes in revenue recognition on sales to two-tier distributors. Lastly, an adjustment will be recorded to establish an asset and increase retained earnings related to the requirement to capitalize incremental contract acquisition costs for customer contracts. Financial Instruments In January 2016, the FASB issued an accounting standard update that changes the accounting for equity investments, financial liabilities under the fair value option, and the presentation and disclosure requirements for financial instruments. The accounting standard update will be effective for Cisco beginning in the first quarter of fiscal 2019, and early adoption is permitted. The most significant impact of this accounting standard update for Cisco is that it will require the remeasurement of investments that are not accounted for under the equity method at fair value at the end of each reporting period with the changes recorded to the income statement. While Cisco is currently evaluating the impact of this accounting standard update on its Consolidated Financial Statements, Cisco expects that this accounting standard update will increase the variability of other income (loss), net. Leases In February 2016, the FASB issued an accounting standard update related to leases requiring lessees to recognize operating and financing lease liabilities on the balance sheet, as well as corresponding right-of-use assets. The new lease standard also makes some changes to lessor accounting and aligns key aspects of the lessor accounting model with the revenue recognition standard. In addition, disclosures will be required to enable users of financial statements to assess the amount, timing, and uncertainty of cash flows arising from leases. The accounting standard update will be effective for Cisco beginning in the first quarter of fiscal 2020 on a modified retrospective basis, and early adoption is permitted. Cisco is currently evaluating the impact of this accounting standard update on its Consolidated Financial Statements. Credit Losses of Financial Instruments In June 2016, the FASB issued an accounting standard update that requires measurement and recognition of expected credit losses for financial assets held based on historical experience, current conditions, and reasonable and supportable forecasts that affect the collectibility of the reported amount. The accounting standard update will be effective for Cisco beginning in the first quarter of fiscal 2021 on a modified retrospective basis, and early adoption in fiscal 2020 is permitted. Cisco is currently evaluating the impact of this accounting standard update on its Consolidated Financial Statements. Classification of Cash Flow Elements In August 2016, the FASB issued an accounting standard update related to the classification of certain cash receipts and cash payments on the statement of cash flows. The accounting standard update will be effective for Cisco beginning in the first quarter of fiscal 2019 on a retrospective basis, and early adoption is permitted. Cisco is currently evaluating the impact of this accounting standard update on its Consolidated Statements of Cash Flows. Income Taxes on Intra-Entity Transfers of Assets In October 2016, the FASB issued an accounting standard update that requires recognition of the income tax consequences of intra-entity transfers of assets (other than inventory) at the transaction date. The accounting standard update will be effective for Cisco beginning in the first quarter of fiscal 2019 on a modified retrospective basis, and early adoption is permitted. Cisco is currently evaluating the impact of this accounting standard update on its Consolidated Financial Statements. Restricted Cash in Statement of Cash Flow In November 2016, the FASB issued an accounting standard update that provides guidance on the classification and presentation of changes in restricted cash and cash equivalents in the statement of cash flows. The accounting standard update will be effective for Cisco beginning in the first quarter of fiscal 2019 using a retrospective transition method to each period presented, and early adoption is permitted. Cisco does not expect that this accounting standard update will have a material impact on its Consolidated Statements of Cash Flows. Definition of a Business In January 2017, the FASB issued an accounting standard update that clarifies the definition of a business to help companies evaluate whether acquisition or disposal transactions should be accounted for as asset groups or as businesses. The accounting standard update will be effective for Cisco beginning in the first quarter of fiscal 2019 on a prospective basis. The impact of this accounting standard update will be fact dependent, but Cisco expects that some transactions that were previously accounted for as business combinations or disposal transactions will be accounted for as asset purchases or asset sales under the accounting standard update. Simplifying the Test for Goodwill Impairment In January 2017, the FASB issued an accounting standard update that removes Step 2 of the goodwill impairment test, which requires the assessment of fair value of individual assets and liabilities of a reporting unit to measure goodwill impairments. Goodwill impairment will now be the amount by which a reporting unit's carrying value exceeds its fair value. The accounting standard update will be effective for Cisco beginning in the first quarter of fiscal 2021 on a prospective basis, and early adoption is permitted. Cisco does not expect that this accounting standard update will impact its Consolidated Financial Statements.

Acquisitions and Divestitures

Acquisitions and Divestitures	3 Months Ended
	Oct. 28, 2017
Business Combinations [Abstract]
Acquisitions and Divestitures	Acquisitions and Divestitures The Company completed three acquisitions during the three months ended October 28, 2017 . A summary of the allocation of the total purchase consideration is presented as follows (in millions): Purchase Consideration Net Tangible Assets Acquired (Liabilities Assumed) Purchased Intangible Assets Goodwill Viptela $ 497 $ (18 ) $ 180 $ 335 Springpath 248 (11 ) 160 99 Other 16 1 6 9 Total $ 761 $ (28 ) $ 346 $ 443 On July 31, 2017, the Company completed its acquisition of privately held Viptela Inc. ("Viptela"), a provider of software-defined wide area networking products. Revenue from the Viptela acquisition has been included in the Company's Infrastructure Platforms product category. On September 22, 2017, the Company completed its acquisition of privately held Springpath, Inc. ("Springpath"), a hyperconvergence software company. Revenue from the Springpath acquisition has been included in the Company's Infrastructure Platforms product category. The total purchase consideration related to acquisitions completed during the three months ended October 28, 2017 consisted of cash consideration and vested share-based awards assumed. The total cash and cash equivalents acquired from these acquisitions was approximately $11 million . Total transaction costs related to acquisition activities were $9 million and $1 million for the three months ended October 28, 2017 and October 29, 2016 , respectively. These transaction costs were expensed as incurred in general and administrative expenses ("G&A") in the Consolidated Statements of Operations. The Company recognized a gain of $46 million during the three months ended October 28, 2017 in connection with its acquisitions. This gain was recognized in Other income (loss), net in the Consolidated Statement of Operations. The purchase price allocation for acquisitions completed during recent periods is preliminary and subject to revision as additional information about fair value of assets and liabilities becomes available. Additional information that existed as of the acquisition date but at that time was unknown to the Company may become known to the Company during the remainder of the measurement period, a period not to exceed 12 months from the acquisition date. Adjustments in the purchase price allocation may require a recasting of the amounts allocated to goodwill retroactive to the period in which the acquisition occurred. The goodwill generated from acquisitions completed during the three months ended October 28, 2017 is primarily related to expected synergies. The goodwill is generally not deductible for income tax purposes. The Consolidated Financial Statements include the operating results of each acquisition from the date of acquisition. Pro forma results of operations for the acquisitions completed during the three months ended October 28, 2017 have not been presented because the effects of the acquisitions, individually and in the aggregate, were not material to the Company’s financial results. Pending Acquisition of BroadSoft On October 23, 2017, the Company announced a definitive agreement to acquire publicly held BroadSoft, Inc. ("BroadSoft"), a cloud calling and contact center solutions company. Under the terms of the agreement, the Company will pay $55 per share, in cash, in exchange for each share of BroadSoft, or an aggregate purchase price of approximately $1.9 billion net of cash and short-term investments. The acquisition is expected to close after completion of customary regulatory reviews.

Goodwill and Purchased Intangib

Goodwill and Purchased Intangible Assets	3 Months Ended
	Oct. 28, 2017
Goodwill and Intangible Assets Disclosure [Abstract]
Goodwill and Purchased Intangible Assets	Goodwill and Purchased Intangible Assets (a) Goodwill The following table presents the goodwill allocated to the Company’s reportable segments as of and during the three months ended October 28, 2017 (in millions): Balance at Balance at July 29, 2017 Acquisitions Other October 28, 2017 Americas $ 18,691 $ 323 $ 15 $ 19,029 EMEA 7,057 92 6 7,155 APJC 4,018 28 3 4,049 Total $ 29,766 $ 443 $ 24 $ 30,233 “Other” in the table above primarily consists of foreign currency translation, as well as immaterial purchase accounting adjustments. (b) Purchased Intangible Assets The following table presents details of the Company’s intangible assets acquired through acquisitions completed during the three months ended October 28, 2017 (in millions, except years): FINITE LIVES INDEFINITE LIVES TOTAL TECHNOLOGY CUSTOMER RELATIONSHIPS OTHER IPR&D Weighted- Average Useful Life (in Years) Amount Weighted- Average Useful Life (in Years) Amount Weighted- Average Useful Life (in Years) Amount Amount Amount Viptela 5.0 $ 144 6.0 $ 35 1.0 $ 1 $ — $ 180 Springpath 4.0 157 0.0 — 0.0 — 3 160 Other 5.0 3 4.0 3 0.0 — — 6 Total $ 304 $ 38 $ 1 $ 3 $ 346 The following tables present details of the Company’s purchased intangible assets (in millions): October 28, 2017 Gross Accumulated Amortization Net Purchased intangible assets with finite lives: Technology $ 3,465 $ (1,514 ) $ 1,951 Customer relationships 1,391 (818 ) 573 Other 82 (44 ) 38 Total purchased intangible assets with finite lives 4,938 (2,376 ) 2,562 In-process research and development, with indefinite lives 115 — 115 Total $ 5,053 $ (2,376 ) $ 2,677 July 29, 2017 Gross Accumulated Amortization Net Purchased intangible assets with finite lives: Technology $ 3,182 $ (1,386 ) $ 1,796 Customer relationships 1,353 (765 ) 588 Other 82 (38 ) 44 Total purchased intangible assets with finite lives 4,617 (2,189 ) 2,428 In-process research and development, with indefinite lives 111 — 111 Total $ 4,728 $ (2,189 ) $ 2,539 Purchased intangible assets include intangible assets acquired through acquisitions as well as through direct purchases or licenses. Impairment charges related to purchased intangible assets were zero and $42 million for the three months ended October 28, 2017 and October 29, 2016 , respectively. Impairment charges were primarily as a result of declines in estimated fair values of certain purchased intangible assets resulting from the reduction or elimination of expected future cash flows associated with certain of the Company’s technology and IPR&D intangible assets. Of these impairment charges, $38 million for the three months ended October 29, 2016 was recorded to restructuring and other charges in connection with the Company's decision to exit certain products lines, and the corresponding elimination of future associated cash flows. The following table presents the amortization of purchased intangible assets, including impairment charges (in millions): Three Months Ended October 28, 2017 October 29, 2016 Amortization of purchased intangible assets: Cost of sales $ 154 $ 129 Operating expenses Amortization of purchased intangible assets 61 78 Restructuring and other charges — 38 Total $ 215 $ 245 The estimated future amortization expense of purchased intangible assets with finite lives as of October 28, 2017 is as follows (in millions): Fiscal Year Amount 2018 (remaining nine months) $ 647 2019 776 2020 559 2021 362 2022 145 Thereafter 73 Total $ 2,562

Restructuring and Other Charges

Restructuring and Other Charges	3 Months Ended
	Oct. 28, 2017
Restructuring Charges [Abstract]
Restructuring and Other Charges	Restructuring and Other Charges The Company began taking action under a restructuring plan in August 2016 (the "Fiscal 2017 Plan"), in order to reinvest in its key priority areas. In the first quarter of fiscal 2018, the Company extended the Fiscal 2017 Plan to include an additional $150 million of estimated additional pretax charges for employee severance and other one-time termination benefits. The Company's estimated aggregate pretax charges of approximately $1.0 billion under the Fiscal 2017 Plan are primarily cash based and consist primarily of employee severance and other one-time termination benefits, and other associated costs. In connection with this plan, the Company has incurred cumulative charges of approximately $908 million and it expects the Fiscal 2017 Plan to be substantially completed by the end of the second quarter of fiscal 2018. The following tables summarize the activities related to the restructuring and other charges (in millions): FISCAL 2017 AND PRIOR PLANS Employee Severance Other Total Liability as of July 29, 2017 $ 74 $ 43 $ 117 Charges 145 7 152 Cash payments (79 ) (16 ) (95 ) Non-cash items — (6 ) (6 ) Liability as of October 28, 2017 $ 140 $ 28 $ 168 FISCAL 2017 AND PRIOR PLANS Employee Severance Other Total Liability as of July 30, 2016 $ 21 $ 24 $ 45 Charges 369 42 411 Cash payments (269 ) (1 ) (270 ) Non-cash items (4 ) (43 ) (47 ) Liability as of October 29, 2016 $ 117 $ 22 $ 139

Balance Sheet Details

Balance Sheet Details	3 Months Ended
	Oct. 28, 2017
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Balance Sheet Details	Balance Sheet Details The following tables provide details of selected balance sheet items (in millions): October 28, July 29, Inventories: Raw materials $ 358 $ 289 Work in Process 1 1 Finished goods: Distributor inventory and deferred cost of sales 457 451 Manufactured finished goods 550 552 Total finished goods 1,007 1,003 Service-related spares 303 300 Demonstration systems 24 23 Total $ 1,693 $ 1,616 Property and equipment, net: Gross property and equipment: Land, buildings, and building and leasehold improvements $ 4,854 $ 4,926 Computer equipment and related software 1,251 1,258 Production, engineering, and other equipment 5,681 5,707 Operating lease assets 352 356 Furniture and fixtures 393 572 Total gross property and equipment 12,531 12,819 Less: accumulated depreciation and amortization (9,329 ) (9,497 ) Total $ 3,202 $ 3,322 Deferred revenue: Service $ 10,991 $ 11,302 Product: Deferred revenue related to recurring software and subscription offers 5,213 4,971 Other product deferred revenue 2,361 2,221 Total product deferred revenue 7,574 7,192 Total $ 18,565 $ 18,494 Reported as: Current $ 10,920 $ 10,821 Noncurrent 7,645 7,673 Total $ 18,565 $ 18,494

Financing Receivables and Opera

Financing Receivables and Operating Leases	3 Months Ended
	Oct. 28, 2017
Receivables [Abstract]
Financing Receivables and Operating Leases	Financing Receivables and Operating Leases (a) Financing Receivables Financing receivables primarily consist of lease receivables, loan receivables, and financed service contracts. Lease receivables represent sales-type and direct-financing leases resulting from the sale of the Company’s and complementary third-party products and are typically collateralized by a security interest in the underlying assets. Lease receivables consist of arrangements with terms of four years on average. Loan receivables represent financing arrangements related to the sale of the Company’s hardware, software, and services, which may include additional funding for other costs associated with network installation and integration of the Company’s products and services. Loan receivables generally have terms of up to three years . Financed service contracts include financing receivables related to technical support and advanced services. Revenue related to the technical support services is typically deferred and included in deferred service revenue and is recognized ratably over the period during which the related services are to be performed, which typically ranges from one to three years. A summary of the Company's financing receivables is presented as follows (in millions): October 28, 2017 Lease Receivables Loan Receivables Financed Service Contracts Total Gross $ 2,848 $ 4,748 $ 2,583 $ 10,179 Residual value 167 — — 167 Unearned income (143 ) — — (143 ) Allowance for credit loss (160 ) (106 ) (23 ) (289 ) Total, net $ 2,712 $ 4,642 $ 2,560 $ 9,914 Reported as: Current $ 1,290 $ 2,236 $ 1,512 $ 5,038 Noncurrent 1,422 2,406 1,048 4,876 Total, net $ 2,712 $ 4,642 $ 2,560 $ 9,914 July 29, 2017 Lease Receivables Loan Receivables Financed Service Contracts Total Gross $ 2,784 $ 4,560 $ 2,517 $ 9,861 Residual value 173 — — 173 Unearned income (145 ) — — (145 ) Allowance for credit loss (162 ) (103 ) (30 ) (295 ) Total, net $ 2,650 $ 4,457 $ 2,487 $ 9,594 Reported as: Current $ 1,301 $ 2,104 $ 1,451 $ 4,856 Noncurrent 1,349 2,353 1,036 4,738 Total, net $ 2,650 $ 4,457 $ 2,487 $ 9,594 Future minimum lease payments to the Company on lease receivables as of October 28, 2017 are summarized as follows (in millions): Fiscal Year Amount 2018 (remaining nine months) $ 1,106 2019 932 2020 512 2021 239 2022 57 Thereafter 2 Total $ 2,848 Actual cash collections may differ from the contractual maturities due to early customer buyouts, refinancings, or defaults. (b) Credit Quality of Financing Receivables Gross receivables, excluding residual value, less unearned income categorized by the Company’s internal credit risk rating as of October 28, 2017 and July 29, 2017 are summarized as follows (in millions): INTERNAL CREDIT RISK RATING October 28, 2017 1 to 4 5 to 6 7 and Higher Total Lease receivables $ 1,320 $ 1,337 $ 48 $ 2,705 Loan receivables 2,988 1,571 189 4,748 Financed service contracts 1,656 911 16 2,583 Total $ 5,964 $ 3,819 $ 253 $ 10,036 INTERNAL CREDIT RISK RATING July 29, 2017 1 to 4 5 to 6 7 and Higher Total Lease receivables $ 1,408 $ 1,181 $ 50 $ 2,639 Loan receivables 2,865 1,516 179 4,560 Financed service contracts 1,593 902 22 2,517 Total $ 5,866 $ 3,599 $ 251 $ 9,716 The Company determines the adequacy of its allowance for credit loss by assessing the risks and losses inherent in its financing receivables by portfolio segment. The portfolio segment is based on the types of financing offered by the Company to its customers, which consist of the following: lease receivables, loan receivables, and financed service contracts. The Company’s internal credit risk ratings of 1 through 4 correspond to investment-grade ratings, while credit risk ratings of 5 and 6 correspond to non-investment grade ratings. Credit risk ratings of 7 and higher correspond to substandard ratings. In circumstances when collectibility is not deemed reasonably assured, the associated revenue is deferred in accordance with the Company’s revenue recognition policies, and the related allowance for credit loss, if any, is included in deferred revenue. The Company also records deferred revenue associated with financing receivables when there are remaining performance obligations, as it does for financed service contracts. The following tables present the aging analysis of gross receivables, excluding residual value and less unearned income as of October 28, 2017 and July 29, 2017 (in millions): DAYS PAST DUE (INCLUDES BILLED AND UNBILLED) October 28, 2017 31-60 61-90 91+ Total Past Due Current Total Nonaccrual Financing Receivables Impaired Financing Receivables Lease receivables $ 161 $ 86 $ 320 $ 567 $ 2,138 $ 2,705 $ 14 $ 14 Loan receivables 145 81 407 633 4,115 4,748 44 44 Financed service contracts 261 184 106 551 2,032 2,583 13 2 Total $ 567 $ 351 $ 833 $ 1,751 $ 8,285 $ 10,036 $ 71 $ 60 DAYS PAST DUE (INCLUDES BILLED AND UNBILLED) July 29, 2017 31-60 61-90 91+ Total Past Due Current Total Nonaccrual Financing Receivables Impaired Financing Receivables Lease receivables $ 160 $ 60 $ 216 $ 436 $ 2,203 $ 2,639 $ 14 $ 14 Loan receivables 230 48 259 537 4,023 4,560 43 43 Financed service contracts 160 77 523 760 1,757 2,517 18 2 Total $ 550 $ 185 $ 998 $ 1,733 $ 7,983 $ 9,716 $ 75 $ 59 Past due financing receivables are those that are 31 days or more past due according to their contractual payment terms. The data in the preceding tables is presented by contract, and the aging classification of each contract is based on the oldest outstanding receivable, and therefore past due amounts also include unbilled and current receivables within the same contract. The balances of either unbilled or current financing receivables included in the category of 91 days plus past due for financing receivables were $595 million and $666 million as of October 28, 2017 and July 29, 2017 , respectively. As of October 28, 2017 , the Company had financing receivables of $215 million , net of unbilled or current receivables, that were in the category of 91 days plus past due but remained on accrual status as they are well secured and in the process of collection. Such balance was $315 million as of July 29, 2017 . (c) Allowance for Credit Loss Rollforward The allowances for credit loss and the related financing receivables are summarized as follows (in millions): CREDIT LOSS ALLOWANCES Lease Loan Financed Service Total Allowance for credit loss as of July 29, 2017 $ 162 $ 103 $ 30 $ 295 Provisions (2 ) 2 (6 ) (6 ) Foreign exchange and other — 1 (1 ) — Allowance for credit loss as of October 28, 2017 $ 160 $ 106 $ 23 $ 289 CREDIT LOSS ALLOWANCES Lease Loan Financed Service Total Allowance for credit loss as of July 30, 2016 $ 230 $ 97 $ 48 $ 375 Provisions (4 ) 12 — 8 Foreign exchange and other 1 2 — 3 Allowance for credit loss as of October 29, 2016 $ 227 $ 111 $ 48 $ 386 The Company assesses the allowance for credit loss related to financing receivables on either an individual or a collective basis. The Company considers various factors in evaluating lease and loan receivables and the earned portion of financed service contracts for possible impairment on an individual basis. These factors include the Company’s historical experience, credit quality and age of the receivable balances, and economic conditions that may affect a customer’s ability to pay. When the evaluation indicates that it is probable that all amounts due pursuant to the contractual terms of the financing agreement, including scheduled interest payments, are unable to be collected, the financing receivable is considered impaired. All such outstanding amounts, including any accrued interest, will be assessed and fully reserved at the customer level. The Company’s internal credit risk ratings are categorized as 1 through 10 , with the lowest credit risk rating representing the highest quality financing receivables. Typically, the Company also considers receivables with a risk rating of 8 or higher to be impaired and will include them in the individual assessment for allowance. These balances, as of October 28, 2017 and July 29, 2017 , are presented under “(b) Credit Quality of Financing Receivables” above. The Company evaluates the remainder of its financing receivables portfolio for impairment on a collective basis and records an allowance for credit loss at the portfolio segment level. When evaluating the financing receivables on a collective basis, the Company uses expected default frequency rates published by a major third-party credit-rating agency as well as its own historical loss rate in the event of default, while also systematically giving effect to economic conditions, concentration of risk, and correlation. (d) Operating Leases The Company provides financing of certain equipment through operating leases, and the amounts are included in property and equipment in the Consolidated Balance Sheets. Amounts relating to equipment on operating lease assets and the associated accumulated depreciation are summarized as follows (in millions): October 28, 2017 July 29, 2017 Operating lease assets $ 352 $ 356 Accumulated depreciation (221 ) (212 ) Operating lease assets, net $ 131 $ 144 Minimum future rentals on noncancelable operating leases as of October 28, 2017 are summarized as follows (in millions): Fiscal Year Amount 2018 (remaining nine months) $ 139 2019 110 2020 48 2021 7 Thereafter 2 Total $ 306

Investments

Investments	3 Months Ended
	Oct. 28, 2017
Investments, Debt and Equity Securities [Abstract]
Investments	Investments (a) Summary of Available-for-Sale Investments The following tables summarize the Company’s available-for-sale investments (in millions): October 28, 2017 Amortized Cost Gross Unrealized Gains Gross Unrealized Losses Fair Value Fixed income securities: U.S. government securities $ 20,564 $ — $ (93 ) $ 20,471 U.S. government agency securities 1,923 — (6 ) 1,917 Non-U.S. government and agency securities 358 — (1 ) 357 Corporate debt securities 31,999 162 (131 ) 32,030 U.S. agency mortgage-backed securities 2,095 2 (23 ) 2,074 Commercial paper 1,775 — — 1,775 Certificates of deposit 140 — — 140 Total fixed income securities 58,854 164 (254 ) 58,764 Publicly traded equity securities 1,134 653 (6 ) 1,781 Total (1) $ 59,988 $ 817 $ (260 ) $ 60,545 July 29, 2017 Amortized Cost Gross Unrealized Gains Gross Unrealized Losses Fair Value Fixed income securities: U.S. government securities $ 19,880 $ 3 $ (60 ) $ 19,823 U.S. government agency securities 2,057 — (5 ) 2,052 Non-U.S. government and agency securities 389 — (1 ) 388 Corporate debt securities 31,626 202 (93 ) 31,735 U.S. agency mortgage-backed securities 2,037 3 (17 ) 2,023 Commercial paper 996 — — 996 Certificates of deposit 60 — — 60 Total fixed income securities 57,045 208 (176 ) 57,077 Publicly traded equity securities 1,180 554 (27 ) 1,707 Total (1) $ 58,225 $ 762 $ (203 ) $ 58,784 (1) Includes investments that were pending settlement as of the respective fiscal years. The net unsettled investment purchases (sales) were $95 million and $(30) million as of October 28, 2017 and July 29, 2017 , respectively. Non-U.S. government and agency securities include agency and corporate debt securities that are guaranteed by non-U.S. governments. (b) Gains and Losses on Available-for-Sale Investments The following table presents the gross realized gains and gross realized losses related to available-for-sale investments (in millions): Three Months Ended October 28, 2017 October 29, 2016 Gross realized gains $ 67 $ 30 Gross realized losses (34 ) (15 ) Total $ 33 $ 15 The following table presents the realized net gains (losses) related to available-for-sale investments by security type (in millions): Three Months Ended October 28, 2017 October 29, 2016 Net gains (losses) on investments in publicly traded equity securities $ 29 $ 5 Net gains (losses) on investments in fixed income securities 4 10 Total $ 33 $ 15 The following tables present the breakdown of the available-for-sale investments with gross unrealized losses and the duration that those losses had been unrealized at October 28, 2017 and July 29, 2017 (in millions): UNREALIZED LOSSES LESS THAN 12 MONTHS UNREALIZED LOSSES 12 MONTHS OR GREATER TOTAL October 28, 2017 Fair Value Gross Unrealized Losses Fair Value Gross Unrealized Losses Fair Value Gross Unrealized Losses Fixed income securities: U.S. government securities $ 16,719 $ (66 ) $ 3,602 $ (27 ) $ 20,321 $ (93 ) U.S. government agency securities 1,696 (4 ) 222 (2 ) 1,918 (6 ) Non-U.S. government and agency securities 316 (1 ) 41 — 357 (1 ) Corporate debt securities 8,129 (45 ) 4,209 (86 ) 12,338 (131 ) U.S. agency mortgage-backed securities 1,562 (16 ) 266 (7 ) 1,828 (23 ) Total fixed income securities 28,422 (132 ) 8,340 (122 ) 36,762 (254 ) Publicly traded equity securities 54 (6 ) — — 54 (6 ) Total $ 28,476 $ (138 ) $ 8,340 $ (122 ) $ 36,816 $ (260 ) UNREALIZED LOSSES LESS THAN 12 MONTHS UNREALIZED LOSSES 12 MONTHS OR GREATER TOTAL July 29, 2017 Fair Value Gross Unrealized Losses Fair Value Gross Unrealized Losses Fair Value Gross Unrealized Losses Fixed income securities: U.S. government securities $ 14,962 $ (55 ) $ 771 $ (5 ) $ 15,733 $ (60 ) U.S. government agency securities 1,791 (4 ) 130 (1 ) 1,921 (5 ) Non-U.S. government and agency securities 368 (1 ) — — 368 (1 ) Corporate debt securities 9,487 (92 ) 101 (1 ) 9,588 (93 ) U.S. agency mortgage-backed securities 1,485 (16 ) 38 (1 ) 1,523 (17 ) Total fixed income securities 28,093 (168 ) 1,040 (8 ) 29,133 (176 ) Publicly traded equity securities 122 (27 ) — — 122 (27 ) Total $ 28,215 $ (195 ) $ 1,040 $ (8 ) $ 29,255 $ (203 ) For the three months ended October 28, 2017 , the net realized losses related to available-for-sale investments included impairment charges of $26 million . These impairment charges related primarily to publicly traded equity securities and were due to a decline in the fair value of those securities below their cost basis that were determined to be other than temporary. There were no impairment charges on available-for-sale investments for the three months ended October 29, 2016 . As of October 28, 2017 , for fixed income securities that were in unrealized loss positions, the Company has determined that (i) it does not have the intent to sell any of these investments and (ii) it is not more likely than not that it will be required to sell any of these investments before recovery of the entire amortized cost basis. In addition, as of October 28, 2017 , the Company anticipates that it will recover the entire amortized cost basis of such fixed income securities and has determined that no other-than-temporary impairments associated with credit losses were required to be recognized during the three months ended October 28, 2017 . The Company has evaluated its publicly traded equity securities as of October 28, 2017 and has determined that there were no additional other-than-temporary impairments in the respective categories of unrealized losses. This determination was based on several factors, which include the length of time and extent to which fair value has been less than the cost basis, the financial condition and near-term prospects of the issuer, and the Company’s intent and ability to hold the publicly traded equity securities for a period of time sufficient to allow for any anticipated recovery in market value. (c) Maturities of Fixed Income Securities The following table summarizes the maturities of the Company’s fixed income securities as of October 28, 2017 (in millions): Amortized Cost Fair Value Less than 1 year $ 16,376 $ 16,360 Due in 1 to 2 years 14,866 14,820 Due in 2 to 5 years 21,852 21,883 Due after 5 years 3,665 3,627 Mortgage-backed securities with no single maturity 2,095 2,074 Total $ 58,854 $ 58,764 Actual maturities may differ from the contractual maturities because borrowers may have the right to call or prepay certain obligations. (d) Securities Lending The Company periodically engages in securities lending activities with certain of its available for sale investments. These transactions are accounted for as a secured lending of the securities, and the securities are typically loaned only on an overnight basis. The average daily balance of securities lending for the three months ended October 28, 2017 and October 29, 2016 was $0.5 billion and $1.2 billion , respectively. The Company requires collateral equal to at least 102% of the fair market value of the loaned security and that the collateral be in the form of cash or liquid, high-quality assets. The Company engages in these secured lending transactions only with highly creditworthy counterparties, and the associated portfolio custodian has agreed to indemnify the Company against collateral losses. The Company did not experience any losses in connection with the secured lending of securities during the periods presented. As of October 28, 2017 and July 29, 2017 , the Company had no outstanding securities lending transactions. (e) Investments in Privately Held Companies The carrying value of the investments in privately held companies was included in other assets. For such investments that were accounted for under the equity and cost method as of October 28, 2017 and July 29, 2017 , the amounts are summarized in the following table (in millions): October 28, 2017 July 29, 2017 Equity method investments $ 108 $ 124 Cost method investments 839 859 Total $ 947 $ 983 For additional information on impairment charges related to investments in privately held companies, see Note 9. Variable Interest Entities In the ordinary course of business, the Company has investments in privately held companies and provides financing to certain customers. These privately held companies and customers may be considered to be variable interest entities. The Company evaluates on an ongoing basis its investments in these privately held companies and its customer financings, and has determined that as of October 28, 2017 , except as disclosed in Note 1, there were no significant variable interest entities required to be consolidated in the Company’s Consolidated Financial Statements. As of October 28, 2017 , the carrying value of investments in privately held companies was $947 million , of which $519 million of such investments are considered to be in variable interest entities which are unconsolidated. In addition, the Company has additional funding commitments of $213 million related to these investments, some of which are based on the achievement of certain agreed-upon milestones, and some of which are required to be funded on demand. The carrying value of these investments and the additional funding commitments collectively represent the Company's maximum exposure related to these variable interest entities.

Fair Value

Fair Value	3 Months Ended
	Oct. 28, 2017
Fair Value Disclosures [Abstract]
Fair Value	Fair Value Fair value is defined as the price that would be received from selling an asset or paid to transfer a liability in an orderly transaction between market participants at the measurement date. When determining the fair value measurements for assets and liabilities required or permitted to be either recorded or disclosed at fair value, the Company considers the principal or most advantageous market in which it would transact, and it also considers assumptions that market participants would use when pricing the asset or liability. (a) Fair Value Hierarchy The accounting guidance for fair value measurement requires an entity to maximize the use of observable inputs and minimize the use of unobservable inputs when measuring fair value. The standard establishes a fair value hierarchy based on the level of independent, objective evidence surrounding the inputs used to measure fair value. A financial instrument’s categorization within the fair value hierarchy is based upon the lowest level of input that is significant to the fair value measurement. The fair value hierarchy is as follows: Level 1 applies to assets or liabilities for which there are quoted prices in active markets for identical assets or liabilities. Level 2 applies to assets or liabilities for which there are inputs other than quoted prices that are observable for the asset or liability, such as quoted prices for similar assets or liabilities in active markets; quoted prices for identical assets or liabilities in markets with insufficient volume or infrequent transactions (less active markets); or model-derived valuations in which significant inputs are observable or can be derived principally from, or corroborated by, observable market data. Level 3 applies to assets or liabilities for which there are unobservable inputs to the valuation methodology that are significant to the measurement of the fair value of the assets or liabilities. (b) Assets and Liabilities Measured at Fair Value on a Recurring Basis Assets and liabilities measured at fair value on a recurring basis as of October 28, 2017 and July 29, 2017 were as follows (in millions): OCTOBER 28, 2017 JULY 29, 2017 Level 1 Level 2 Level 3 Total Balance Level 1 Level 2 Level 3 Total Balance Assets: Cash equivalents: Money market funds $ 9,103 $ — $ — $ 9,103 $ 9,567 $ — $ — $ 9,567 U.S. government securities — — — — — 139 — 139 Commercial paper — 115 — 115 — 160 — 160 Certificates of deposit — — — — — 25 — 25 Available-for-sale investments: U.S. government securities — 20,471 — 20,471 — 19,823 — 19,823 U.S. government agency securities — 1,917 — 1,917 — 2,052 — 2,052 Non-U.S. government and agency securities — 357 — 357 — 388 — 388 Corporate debt securities — 32,030 — 32,030 — 31,735 — 31,735 U.S. agency mortgage-backed securities — 2,074 — 2,074 — 2,023 — 2,023 Commercial paper — 1,775 — 1,775 — 996 — 996 Certificates of deposit — 140 — 140 — 60 — 60 Publicly traded equity securities 1,781 — — 1,781 1,707 — — 1,707 Derivative assets — 99 — 99 — 149 — 149 Total $ 10,884 $ 58,978 $ — $ 69,862 $ 11,274 $ 57,550 $ — $ 68,824 Liabilities: Derivative liabilities $ — $ 18 $ — $ 18 $ — $ 4 $ — $ 4 Total $ — $ 18 $ — $ 18 $ — $ 4 $ — $ 4 Level 1 publicly traded equity securities are determined by using quoted prices in active markets for identical assets. Level 2 fixed income securities are priced using quoted market prices for similar instruments or nonbinding market prices that are corroborated by observable market data. The Company uses inputs such as actual trade data, benchmark yields, broker/dealer quotes, and other similar data, which are obtained from quoted market prices, independent pricing vendors, or other sources, to determine the ultimate fair value of these assets and liabilities. The Company uses such pricing data as the primary input to make its assessments and determinations as to the ultimate valuation of its investment portfolio and has not made, during the periods presented, any material adjustments to such inputs. The Company is ultimately responsible for the financial statements and underlying estimates. The Company’s derivative instruments are primarily classified as Level 2, as they are not actively traded and are valued using pricing models that use observable market inputs. The Company did not have any transfers between Level 1 and Level 2 fair value measurements during the periods presented. Level 3 assets include certain derivative instruments, the values of which are determined based on discounted cash flow models using inputs that the Company could not corroborate with market data. (c) Assets Measured at Fair Value on a Nonrecurring Basis The following table presents the Company’s assets that were measured at fair value on a nonrecurring basis during the indicated periods and the related recognized gains and losses for the periods indicated (in millions): TOTAL GAINS (LOSSES) FOR THE THREE MONTHS ENDED October 28, 2017 October 29, 2016 Investments in privately held companies (impaired) $ (21 ) $ (47 ) Purchased intangible assets (impaired) — (42 ) Total gains (losses) for nonrecurring measurements $ (21 ) $ (89 ) These assets were measured at fair value due to events or circumstances the Company identified as having significant impact on their fair value during the respective periods. To arrive at the valuation of these assets, the Company considers any significant changes in the financial metrics and economic variables and also uses third-party valuation reports to assist in the valuation as necessary. The fair value measurement of the impaired investments was classified as Level 3 because significant unobservable inputs were used in the valuation due to the absence of quoted market prices and inherent lack of liquidity. Significant unobservable inputs, which included financial metrics of comparable private and public companies, financial condition and near-term prospects of the investees, recent financing activities of the investees, and the investees’ capital structure as well as other economic variables, reflected the assumptions market participants would use in pricing these assets. The impairment charges, representing the difference between the net book value and the fair value as a result of the evaluation, were recorded to other income (loss), net. The remaining carrying value of the investments that were impaired was $25 million and $46 million as of October 28, 2017 and October 29, 2016 , respectively. The fair value for purchased intangible assets measured at fair value on a nonrecurring basis was categorized as Level 3 due to the use of significant unobservable inputs in the valuation. Significant unobservable inputs that were used included expected revenues and net income related to the assets and the expected life of the assets. The difference between the estimated fair value and the carrying value of the assets was recorded as an impairment charge, which was included in product cost of sales and operating expenses as applicable. See Note 4. The remaining carrying value of the specific purchased intangible assets that were impaired was zero and $11 million as of October 28, 2017 and October 29, 2016 , respectively. (d) Other Fair Value Disclosures The carrying value of investments in privately held companies that were accounted for under the cost method was $839 million and $859 million as of October 28, 2017 and July 29, 2017 , respectively. It was not practicable to estimate the fair value of this portfolio. The fair value of short-term loan receivables and financed service contracts approximates their carrying value due to their short duration. The aggregate carrying value of long-term loan receivables and financed service contracts as of October 28, 2017 and July 29, 2017 was $3.5 billion and $3.4 billion , respectively. The estimated fair value of long-term loan receivables and financed service contracts approximates their carrying value. The Company uses significant unobservable inputs in determining discounted cash flows to estimate the fair value of its long-term loan receivables and financed service contracts, and therefore they are categorized as Level 3. As of October 28, 2017 , the estimated fair value of the short-term debt approximates its carrying value due to the short maturities. As of October 28, 2017 , the fair value of the Company’s senior notes and other long-term debt was $32.0 billion with a carrying amount of $30.4 billion . This compares to a fair value of $32.1 billion and a carrying amount of $30.5 billion as of July 29, 2017 . The fair value of the senior notes and other long-term debt was determined based on observable market prices in a less active market and was categorized as Level 2 in the fair value hierarchy.

Borrowings

Borrowings	3 Months Ended
	Oct. 28, 2017
Debt Disclosure [Abstract]
Borrowings	Borrowings (a) Short-Term Debt The following table summarizes the Company’s short-term debt (in millions, except percentages): October 28, 2017 July 29, 2017 Amount Effective Rate Amount Effective Rate Current portion of long-term debt $ 4,748 1.70 % $ 4,747 1.66 % Commercial paper 5,491 1.25 % 3,245 1.16 % Total short-term debt $ 10,239 $ 7,992 The Company has a short-term debt financing program of up to $10.0 billion through the issuance of commercial paper notes. The Company uses the proceeds from the issuance of commercial paper notes for general corporate purposes. The effective rates for the short- and long-term debt include the interest on the notes, the accretion of the discount, the issuance costs, and, if applicable, adjustments related to hedging. (b) Long-Term Debt The following table summarizes the Company’s long-term debt (in millions, except percentages): October 28, 2017 July 29, 2017 Maturity Date Amount Effective Rate Amount Effective Rate Senior notes: Floating-rate notes: Three-month LIBOR plus 0.60% February 21, 2018 $ 1,000 1.98% $ 1,000 1.84% Three-month LIBOR plus 0.31% June 15, 2018 900 1.70% 900 1.62% Three-month LIBOR plus 0.50% March 1, 2019 500 1.88% 500 1.76% Three-month LIBOR plus 0.34% September 20, 2019 500 1.71% 500 1.66% Fixed-rate notes: 1.40% February 28, 2018 1,250 1.47% 1,250 1.47% 1.65% June 15, 2018 1,600 1.72% 1,600 1.72% 4.95% February 15, 2019 2,000 4.96% 2,000 4.96% 1.60% February 28, 2019 1,000 1.67% 1,000 1.67% 2.125% March 1, 2019 1,750 1.85% 1,750 1.84% 1.40% September 20, 2019 1,500 1.48% 1,500 1.48% 4.45% January 15, 2020 2,500 3.85% 2,500 3.84% 2.45% June 15, 2020 1,500 2.54% 1,500 2.54% 2.20% February 28, 2021 2,500 2.30% 2,500 2.30% 2.90% March 4, 2021 500 2.01% 500 2.00% 1.85% September 20, 2021 2,000 1.90% 2,000 1.90% 3.00% June 15, 2022 500 2.28% 500 2.26% 2.60% February 28, 2023 500 2.68% 500 2.68% 2.20% September 20, 2023 750 2.27% 750 2.27% 3.625% March 4, 2024 1,000 2.13% 1,000 2.12% 3.50% June 15, 2025 500 2.44% 500 2.43% 2.95% February 28, 2026 750 3.01% 750 3.01% 2.50% September 20, 2026 1,500 2.55% 1,500 2.55% 5.90% February 15, 2039 2,000 6.11% 2,000 6.11% 5.50% January 15, 2040 2,000 5.67% 2,000 5.67% Total 30,500 30,500 Unaccreted discount/issuance costs (130 ) (136 ) Hedge accounting fair value adjustments 62 108 Total $ 30,432 $ 30,472 Reported as: Current portion of long-term debt $ 4,748 $ 4,747 Long-term debt 25,684 25,725 Total $ 30,432 $ 30,472 The Company entered into interest rate swaps in prior periods with an aggregate notional amount of $6.75 billion designated as fair value hedges of certain of its fixed-rate senior notes. These swaps convert the fixed interest rates of the fixed-rate notes to floating interest rates based on the London InterBank Offered Rate ("LIBOR"). The gains and losses related to changes in the fair value of the interest rate swaps substantially offset changes in the fair value of the hedged portion of the underlying debt that are attributable to the changes in market interest rates. For additional information, see Note 11. Interest is payable semiannually on each class of the senior fixed-rate notes and payable quarterly on the floating-rate notes. Each of the senior fixed-rate notes is redeemable by the Company at any time, subject to a make-whole premium. The senior notes rank at par with the commercial paper notes that have been issued in the future pursuant to the Company’s short-term debt financing program, as discussed above under “(a) Short-Term Debt.” As of October 28, 2017 , the Company was in compliance with all debt covenants. As of October 28, 2017 , future principal payments for long-term debt, including the current portion, are summarized as follows (in millions): Fiscal Year Amount 2018 (remaining nine months) $ 4,750 2019 5,250 2020 6,000 2021 3,000 2022 2,500 Thereafter 9,000 Total $ 30,500 (c) Credit Facilities On May 15, 2015, the Company entered into a credit agreement with certain institutional lenders that provides for a $3.0 billion unsecured revolving credit facility that is scheduled to expire on May 15, 2020 . Any advances under the credit agreement will accrue interest at rates that are equal to, based on certain conditions, either (i) the highest of (a) the Federal Funds rate plus 0.50% , (b) Bank of America’s “prime rate” as announced from time to time, or (c) LIBOR, or a comparable or successor rate that is approved by the Administrative Agent (“Eurocurrency Rate”), for an interest period of one-month plus 1.00% , or (ii) the Eurocurrency Rate, plus a margin that is based on the Company’s senior debt credit ratings as published by Standard & Poor’s Financial Services, LLC and Moody’s Investors Service, Inc., provided that in no event will the Eurocurrency Rate be less than zero . The Company may also, upon the agreement of either the then-existing lenders or additional lenders not currently parties to the agreement, increase the commitments under the credit facility by up to an additional $2.0 billion and/or extend the expiration date of the credit facility up to May 15, 2022 . In addition, on March 30, 2017, the Company entered into a 364-Day credit agreement with certain institutional lenders that provides for a $2.0 billion unsecured revolving credit facility that is scheduled to expire on March 29, 2018. The credit agreement also provides the Company with the option to, for a fee, convert any borrowing outstanding thereunder on March 29, 2018 to a term loan maturing no later than March 29, 2019. The interest rate applicable to outstanding balances under the credit agreement will be based on either (i) the higher of (a) the rates on overnight Federal Funds transactions with members of the Federal Reserve System (i.e., Federal Funds rate) plus 0.50% , (b) Bank of America’s “prime rate” as announced from time to time or (c) LIBOR for an interest period of one month plus 1.00% , or (ii) LIBOR plus a margin that is based on the Company's senior debt credit ratings as published by S&P Global Rating, a business unit of Standard & Poor’s Financial Services LLC, and Moody’s Investors Service, Inc. These credit agreements require that the Company comply with certain covenants, including that the Company maintains an interest coverage ratio as defined in these agreements. As of October 28, 2017 , the Company was in compliance with the required interest coverage ratios and the other covenants, and the Company had not borrowed any funds under these credit facilities.

Derivative Instruments

Derivative Instruments	3 Months Ended
	Oct. 28, 2017
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Derivative Instruments	Derivative Instruments (a) Summary of Derivative Instruments The Company uses derivative instruments primarily to manage exposures to foreign currency exchange rate, interest rate, and equity price risks. The Company’s primary objective in holding derivatives is to reduce the volatility of earnings and cash flows associated with changes in foreign currency exchange rates, interest rates, and equity prices. The Company’s derivatives expose it to credit risk to the extent that the counterparties may be unable to meet the terms of the agreement. The Company does, however, seek to mitigate such risks by limiting its counterparties to major financial institutions. In addition, the potential risk of loss with any one counterparty resulting from this type of credit risk is monitored. Management does not expect material losses as a result of defaults by counterparties. The fair values of the Company’s derivative instruments and the line items on the Consolidated Balance Sheets to which they were recorded are summarized as follows (in millions): DERIVATIVE ASSETS DERIVATIVE LIABILITIES Balance Sheet Line Item October 28, July 29, Balance Sheet Line Item October 28, July 29, Derivatives designated as hedging instruments: Foreign currency derivatives Other current assets $ 40 $ 46 Other current liabilities $ — $ 1 Equity derivatives Other current assets — — Other current liabilities 14 — Interest rate derivatives Other assets 58 102 Other long-term liabilities 2 — Total 98 148 16 1 Derivatives not designated as hedging instruments: Foreign currency derivatives Other current assets 1 1 Other current liabilities 2 3 Equity derivatives/warrants Other assets — — Other long-term liabilities — — Total 1 1 2 3 Total $ 99 $ 149 $ 18 $ 4 The effects of the Company’s cash flow and net investment hedging instruments on other comprehensive income (OCI) and the Consolidated Statements of Operations are summarized as follows (in millions): GAINS (LOSSES) RECOGNIZED IN OCI ON DERIVATIVES FOR THE THREE MONTHS ENDED (EFFECTIVE PORTION) GAINS (LOSSES) RECLASSIFIED FROM AOCI INTO INCOME FOR THE THREE MONTHS ENDED (EFFECTIVE PORTION) October 28, October 29, Line Item in Statements of Operations October 28, October 29, Derivatives designated as cash flow hedging instruments: Foreign currency derivatives $ 8 $ (46 ) Operating expenses $ 10 $ (9 ) Cost of sales — service 3 (3 ) Total $ 8 $ (46 ) $ 13 $ (12 ) Derivatives designated as net investment hedging instruments: Foreign currency derivatives $ (5 ) $ 9 Other income (loss), net $ — $ — As of October 28, 2017 , the Company estimates that approximately $44 million of net derivative gains related to its cash flow hedges included in accumulated other comprehensive income ("AOCI") will be reclassified into earnings within the next 12 months when the underlying hedged item impacts earnings. The effect on the Consolidated Statements of Operations of derivative instruments designated as fair value hedges and the underlying hedged items is summarized as follows (in millions): GAINS (LOSSES) ON DERIVATIVE INSTRUMENTS FOR THE THREE MONTHS ENDED GAINS (LOSSES) RELATED TO HEDGED ITEMS FOR THE THREE MONTHS ENDED Derivatives Designated as Fair Value Hedging Instruments Line Item in Statements of Operations October 28, October 29, October 28, October 29, Interest rate derivatives Interest expense $ (46 ) $ (91 ) $ 46 $ 90 Equity derivatives Other income (loss), net (14 ) — 14 — Total $ (60 ) $ (91 ) $ 60 $ 90 The effect on the Consolidated Statements of Operations of derivative instruments not designated as hedges is summarized as follows (in millions): GAINS (LOSSES) FOR THE THREE MONTHS ENDED Derivatives Not Designated as Hedging Instruments Line Item in Statements of Operations October 28, October 29, Foreign currency derivatives Other income (loss), net $ 7 $ (16 ) Total return swaps—deferred compensation Operating expenses 16 (3 ) Equity derivatives Other income (loss), net 1 1 Total $ 24 $ (18 ) The notional amounts of the Company’s outstanding derivatives are summarized as follows (in millions): October 28, July 29, Derivatives designated as hedging instruments: Foreign currency derivatives—cash flow hedges $ 1,219 $ 1,696 Interest rate derivatives 6,750 6,750 Net investment hedging instruments 266 351 Equity derivatives 302 — Derivatives not designated as hedging instruments: Foreign currency derivatives 1,918 2,258 Total return swaps—deferred compensation 564 535 Total $ 11,019 $ 11,590 (b) Offsetting of Derivative Instruments The Company presents its derivative instruments at gross fair values in the Consolidated Balance Sheets. However, the Company’s master netting and other similar arrangements with the respective counterparties allow for net settlement under certain conditions, which are designed to reduce credit risk by permitting net settlement with the same counterparty. To further limit credit risk, the Company also enters into collateral security arrangements related to certain derivative instruments whereby cash is posted as collateral between the counterparties based on the fair market value of the derivative instrument. Information related to these offsetting arrangements is summarized as follows (in millions): October 28, 2017 GROSS AMOUNTS OFFSET IN THE CONSOLIDATED BALANCE SHEETS GROSS AMOUNTS NOT OFFSET IN THE CONSOLIDATED BALANCE SHEETS Gross Amounts Recognized Gross Amounts Offset Net Amounts Presented Gross Derivative Amounts Cash Collateral Net Amount Derivatives assets $ 99 $ — $ 99 $ (14 ) $ (57 ) $ 28 Derivatives liabilities $ 18 $ — $ 18 $ (14 ) $ — $ 4 July 29, 2017 GROSS AMOUNTS OFFSET IN THE CONSOLIDATED BALANCE SHEETS GROSS AMOUNTS NOT OFFSET IN THE CONSOLIDATED BALANCE SHEETS Gross Amounts Recognized Gross Amounts Offset Net Amounts Presented Gross Derivative Amounts Cash Collateral Net Amount Derivatives assets $ 149 $ — $ 149 $ (4 ) $ (81 ) $ 64 Derivatives liabilities $ 4 $ — $ 4 $ (4 ) $ — $ — (c) Foreign Currency Exchange Risk The Company conducts business globally in numerous currencies. Therefore, it is exposed to adverse movements in foreign currency exchange rates. To limit the exposure related to foreign currency changes, the Company enters into foreign currency contracts. The Company does not enter into such contracts for speculative purposes. The Company hedges forecasted foreign currency transactions related to certain operating expenses and service cost of sales with currency options and forward contracts. These currency options and forward contracts, designated as cash flow hedges, generally have maturities of less than 24 months . The Company assesses effectiveness based on changes in total fair value of the derivatives. The effective portion of the derivative instrument’s gain or loss is initially reported as a component of AOCI and subsequently reclassified into earnings when the hedged exposure affects earnings. The ineffective portion, if any, of the gain or loss is reported in earnings immediately. During the periods presented, the Company did not discontinue any cash flow hedges for which it was probable that a forecasted transaction would not occur. The Company enters into foreign exchange forward and option contracts to reduce the short-term effects of foreign currency fluctuations on assets and liabilities such as foreign currency receivables, including long-term customer financings, investments, and payables. These derivatives are not designated as hedging instruments. Gains and losses on the contracts are included in other income (loss), net, and substantially offset foreign exchange gains and losses from the remeasurement of intercompany balances or other current assets, investments, or liabilities denominated in currencies other than the functional currency of the reporting entity. The Company hedges certain net investments in its foreign operations with forward contracts to reduce the effects of foreign currency fluctuations on the Company’s net investment in those foreign subsidiaries. (d) Interest Rate Risk Interest Rate Derivatives, Investments The Company’s primary objective for holding fixed income securities is to achieve an appropriate investment return consistent with preserving principal and managing risk. To realize these objectives, the Company may utilize interest rate swaps or other derivatives designated as fair value or cash flow hedges. As of October 28, 2017 and July 29, 2017 , the Company did not have any outstanding interest rate derivatives related to its fixed income securities. Interest Rate Derivatives Designated as Fair Value Hedges, Long-Term Debt In the three months ended October 28, 2017 , the Company did not enter into any interest rate swaps. In prior fiscal years, the Company entered into interest rate swaps designated as fair value hedges related to fixed-rate senior notes that are due in fiscal 2019 through 2025. Under these interest rate swaps, the Company receives fixed-rate interest payments and makes interest payments based on LIBOR plus a fixed number of basis points. The effect of such swaps is to convert the fixed interest rates of the senior fixed-rate notes to floating interest rates based on LIBOR. The gains and losses related to changes in the fair value of the interest rate swaps are included in interest expense and substantially offset changes in the fair value of the hedged portion of the underlying debt that are attributable to the changes in market interest rates. The fair value of the interest rate swaps was reflected in other current assets and other assets. (e) Equity Price Risk The Company may hold equity securities for strategic purposes or to diversify its overall investment portfolio. The publicly traded equity securities in the Company’s portfolio are subject to price risk. To manage its exposure to changes in the fair value of certain equity securities, the Company has periodically entered into equity derivatives that are designated as fair value hedges. The changes in the value of the hedging instruments are included in other income (loss), net, and offset the change in the fair value of the underlying hedged investment. In addition, the Company periodically enters into equity derivatives that are not designated as accounting hedges. The changes in the fair value of these derivatives are also included in other income (loss), net. The Company is also exposed to variability in compensation charges related to certain deferred compensation obligations to employees. Although not designated as accounting hedges, the Company utilizes derivatives such as total return swaps to economically hedge this exposure. (f) Hedge Effectiveness For the periods presented, amounts excluded from the assessment of hedge effectiveness were not material for fair value, cash flow, and net investment hedges. In addition, hedge ineffectiveness for fair value, cash flow, and net investment hedges was not material for any of the periods presented.

Commitments and Contingencies

Commitments and Contingencies	3 Months Ended
	Oct. 28, 2017
Commitments and Contingencies Disclosure [Abstract]
Commitments and Contingencies	Commitments and Contingencies (a) Operating Leases The Company leases office space in many U.S. locations. Outside the United States, larger leased sites include sites in Belgium, Canada, China, France, Germany, India, Israel, Japan, Poland and the United Kingdom . The Company also leases equipment and vehicles. Future minimum lease payments under all noncancelable operating leases with an initial term in excess of one year as of October 28, 2017 are as follows (in millions): Fiscal Year Amount 2018 (remaining nine months) $ 316 2019 292 2020 203 2021 120 2022 99 Thereafter 147 Total $ 1,177 (b) Purchase Commitments with Contract Manufacturers and Suppliers The Company purchases components from a variety of suppliers and uses several contract manufacturers to provide manufacturing services for its products. During the normal course of business, in order to manage manufacturing lead times and help ensure adequate component supply, the Company enters into agreements with contract manufacturers and suppliers that either allow them to procure inventory based upon criteria as defined by the Company or establish the parameters defining the Company’s requirements. A significant portion of the Company’s reported purchase commitments arising from these agreements consists of firm, noncancelable, and unconditional commitments. In certain instances, these agreements allow the Company the option to cancel, reschedule, and adjust the Company’s requirements based on its business needs prior to firm orders being placed. As of October 28, 2017 and July 29, 2017 , the Company had total purchase commitments for inventory of $4,205 million and $4,640 million , respectively. The Company records a liability for firm, noncancelable, and unconditional purchase commitments for quantities in excess of its future demand forecasts consistent with the valuation of the Company’s excess and obsolete inventory. As of October 28, 2017 and July 29, 2017 , the liability for these purchase commitments was $161 million and $162 million , respectively, and was included in other current liabilities. (c) Other Commitments In connection with the Company’s acquisitions, the Company has agreed to pay certain additional amounts contingent upon the achievement of certain agreed-upon technology, development, product, or other milestones or upon the continued employment with the Company of certain employees of the acquired entities. The following table summarizes the compensation expense related to acquisitions (in millions): Three Months Ended October 28, 2017 October 29, 2016 Compensation expense related to acquisitions $ 42 $ 64 As of October 28, 2017 , the Company estimated that future cash compensation expense of up to $298 million may be required to be recognized pursuant to the applicable business combination agreements. Insieme Networks, Inc. In fiscal 2012, the Company made an investment in Insieme, an early stage company focused on research and development in the data center market. This investment included $100 million of funding and a license to certain of the Company’s technology. During fiscal 2014, the Company acquired the remaining interests in Insieme, at which time the former noncontrolling interest holders became eligible to receive up to two milestone payments, which were determined using agreed-upon formulas based primarily on revenue for certain of Insieme’s products. The former noncontrolling interest holders earned the maximum amount related to these two milestone payments and were paid approximately $1 million and $323 million during the three months ended October 28, 2017 and October 29, 2016, respectively. The Company recorded compensation expense of $1 million and $20 million during the three months ended October 28, 2017 and October 29, 2016 , respectively, related to these milestone payments. The Company does not expect a material amount of future compensation expense or further milestone payments related to this acquisition. The Company also has certain funding commitments, primarily related to its investments in privately held companies and venture funds, some of which are based on the achievement of certain agreed-upon milestones, and some of which are required to be funded on demand. The funding commitments were $213 million and $216 million as of October 28, 2017 and July 29, 2017 , respectively. (d) Product Warranties The following table summarizes the activity related to the product warranty liability (in millions): Three Months Ended October 28, October 29, Balance at beginning of period $ 407 $ 414 Provisions for warranty issued 148 176 Adjustments for pre-existing warranties (12 ) — Settlements (149 ) (177 ) Balance at end of period $ 394 $ 413 The Company accrues for warranty costs as part of its cost of sales based on associated material product costs, labor costs for technical support staff, and associated overhead. The Company’s products are generally covered by a warranty for periods ranging from 90 days to five years , and for some products the Company provides a limited lifetime warranty. (e) Financing and Other Guarantees In the ordinary course of business, the Company provides financing guarantees for various third-party financing arrangements extended to channel partners and end-user customers. Payments under these financing guarantee arrangements were not material for the periods presented. Channel Partner Financing Guarantees The Company facilitates arrangements for third-party financing extended to channel partners, consisting of revolving short-term financing, generally with payment terms ranging from 60 to 90 days . These financing arrangements facilitate the working capital requirements of the channel partners, and, in some cases, the Company guarantees a portion of these arrangements. The volume of channel partner financing was $6.7 billion and $6.9 billion for the three months ended October 28, 2017 and October 29, 2016 , respectively. The balance of the channel partner financing subject to guarantees was $1.0 billion as of each of October 28, 2017 and July 29, 2017 . End-User Financing Guarantees The Company also provides financing guarantees for third-party financing arrangements extended to end-user customers related to leases and loans, which typically have terms of up to three years . The volume of financing provided by third parties for leases and loans as to which the Company had provided guarantees was $14 million and $6 million for the three months ended October 28, 2017 and October 29, 2016 , respectively. Financing Guarantee Summary The aggregate amounts of financing guarantees outstanding at October 28, 2017 and July 29, 2017 , representing the total maximum potential future payments under financing arrangements with third parties along with the related deferred revenue, are summarized in the following table (in millions): October 28, July 29, Maximum potential future payments relating to financing guarantees: Channel partner $ 266 $ 240 End user 65 74 Total $ 331 $ 314 Deferred revenue associated with financing guarantees: Channel partner $ (79 ) $ (82 ) End user (46 ) (52 ) Total $ (125 ) $ (134 ) Maximum potential future payments relating to financing guarantees, net of associated deferred revenue $ 206 $ 180 Other Guarantees The Company’s other guarantee arrangements as of October 28, 2017 and July 29, 2017 that were subject to recognition and disclosure requirements were not material. (f) Supplier Component Remediation Liabilities In fiscal 2014, the Company recorded a charge to product cost of sales of $655 million resulting from failures related to products containing memory components manufactured by a single supplier between 2005 and 2010. The Company performs regular assessments of the sufficiency of this liability and reduced the amount by $74 million and $164 million in fiscal 2016 and fiscal 2015, respectively based on updated analyses. During the second quarter of fiscal 2017, the Company further reduced the liability by $141 million to reflect lower than expected defects, actual usage history, and estimated lower future remediation costs as more of the impacted products age and near the end of the support period covered by the remediation program. In addition, during the second quarter of fiscal 2017, the Company recorded a charge to product cost of sales of $125 million related to the expected remediation costs for anticipated failures in future periods of a widely-used component sourced from a third party which is included in several of the Company’s products. The liabilities related to the supplier component remediation matters as of October 28, 2017 and July 29, 2017 were $146 million and $174 million , respectively. (g) Indemnifications In the normal course of business, the Company indemnifies other parties, including customers, lessors, and parties to other transactions with the Company, with respect to certain matters. The Company has agreed to hold such parties harmless against losses arising from a breach of representations or covenants or out of intellectual property infringement or other claims made against certain parties. These agreements may limit the time within which an indemnification claim can be made and the amount of the claim. The Company has been asked to indemnify certain of the Company’s service provider customers that are subject to patent infringement claims asserted by Sprint Communications Company, L.P. in federal court in Kansas and Delaware. Sprint alleges that the service provider customers infringed Sprint’s patents by offering VoIP telephone services utilizing products provided by the Company generally in combination with those of other manufacturers. Sprint seeks monetary damages. Following a trial on March 3, 2017 against Time Warner Inc., a jury in Kansas found that Time Warner Cable willfully infringed five Sprint patents and awarded Sprint $139.8 million in damages. On March 14, 2017 , the Kansas court declined Sprint's request for enhanced damages and entered judgment in favor of Sprint for $139.8 million plus 1.06% in post-judgment interest. On May 30, 2017 , the Court awarded Sprint $20.3 million in pre-judgment interest and denied Time Warner Cable's post-trial motions. Time Warner Cable has appealed. On October 16, 2017 , Sprint and Comcast Cable Communications, LLC reached resolution of the claims in Sprint's lawsuit against Comcast and on October 19, 2017 , the Kansas court dismissed Sprint's lawsuit. Sprint's trial against Cox Communications, Inc. in Delaware is scheduled for December 7, 2017 . For the remaining cases, the Company believes that the service providers continue to have strong non-infringement and invalidity defenses and arguments and/or that Sprint’s damages claims are inconsistent with prevailing law at trial and/or on appeal. Due to the uncertainty surrounding the litigation process, the Company is unable to reasonably estimate the ultimate outcome of the remaining litigation at this time. Should Sprint prevail in litigation, mediation, or settlement, the Company, in accordance with its agreements, may have an obligation to indemnify its service provider customers for damages, mediation awards, or settlement amounts arising from their use of Cisco products. At this time, the Company does not anticipate that its obligations regarding the final outcome of the remaining matters would be material. On January 15, 2016 , Huawei Technologies Co. Ltd. (“Huawei”) filed four patent infringement actions against T-Mobile US, Inc. and T-Mobile USA, Inc. (collectively, “T-Mobile”) in federal court in the Eastern District of Texas. Huawei alleged that T-Mobile’s use of 3GPP standards to implement its 3G and 4G cellular networks infringe 12 patents, now reduced to 10 patents as a result of pre-trial dismissals. Huawei's infringement allegations for some of the patents are based on T-Mobile's use of products provided by the Company in combination with those of other manufacturers. T-Mobile has requested indemnity by the Company with respect to portions of the network that use the Company's equipment. On November 9, 2017 , the court continued the trial date to January 2, 2018 . The Company believes that the patents are invalid and/or not infringed, and that Huawei’s claims should be rejected for Huawei's failure to comply with its licensing and disclosure obligations to standards setting organizations that issued the relevant standards. If T-Mobile is found to infringe any of the patents warranting an award of damages, the Company believes damages against T-Mobile, as appropriately measured, should be governed by reasonable and nondiscriminatory licensing principles. Due to uncertainty surrounding patent litigation processes, however, the Company is unable to reasonably estimate the ultimate outcome of this litigation and the Company does not anticipate that its obligations, if any, regarding the final outcome of the matters would be material. During the first quarter of fiscal 2018, the Company recorded legal and indemnification settlement charges of $122 million to product cost of sales in relation to these matters. In addition, the Company has entered into indemnification agreements with its officers and directors, and the Company’s Amended and Restated Bylaws contain similar indemnification obligations to the Company’s agents. It is not possible to determine the maximum potential amount under these indemnification agreements due to the Company’s limited history with prior indemnification claims and the unique facts and circumstances involved in each particular agreement. Historically, payments made by the Company under these agreements have not had a material effect on the Company’s operating results, financial position, or cash flows. (h) Legal Proceedings Brazil Brazilian authorities have investigated the Company’s Brazilian subsidiary and certain of its former employees, as well as a Brazilian importer of the Company’s products, and its affiliates and employees, relating to alleged evasion of import taxes and alleged improper transactions involving the subsidiary and the importer. Brazilian tax authorities have assessed claims against the Company’s Brazilian subsidiary based on a theory of joint liability with the Brazilian importer for import taxes, interest, and penalties. In addition to claims asserted by the Brazilian federal tax authorities in prior fiscal years, tax authorities from the Brazilian state of Sao Paulo have asserted similar claims on the same legal basis in prior fiscal years. The asserted claims by Brazilian federal tax authorities that remain are for calendar years 2003 through 2007, and the asserted claims by the tax authorities from the state of Sao Paulo are for calendar years 2005 through 2007. The total asserted claims by Brazilian state and federal tax authorities aggregate to $250 million for the alleged evasion of import and other taxes, $1.5 billion for interest, and $1.2 billion for various penalties, all determined using an exchange rate as of October 28, 2017 . The Company has completed a thorough review of the matters and believes the asserted claims against the Company’s Brazilian subsidiary are without merit, and the Company is defending the claims vigorously. While the Company believes there is no legal basis for the alleged liability, due to the complexities and uncertainty surrounding the judicial process in Brazil and the nature of the claims asserting joint liability with the importer, the Company is unable to determine the likelihood of an unfavorable outcome against its Brazilian subsidiary and is unable to reasonably estimate a range of loss, if any. The Company does not expect a final judicial determination for several years. SRI International On September 4, 2013 , SRI International, Inc. (“SRI”) asserted patent infringement claims against the Company in the U.S. District Court for the District of Delaware, accusing the Company's products and services in the area of network intrusion detection of infringing two U.S. patents. SRI sought monetary damages of at least a reasonable royalty and enhanced damages. The trial on these claims began on May 2, 2016 and on May 12, 2016 , the jury returned a verdict finding willful infringement of the asserted patents. The jury awarded SRI damages of $23.7 million . On May 25, 2017 , the Court awarded SRI enhanced damages and attorneys’ fees, entered judgment in the new amount of $57.0 million , and ordered an ongoing royalty of 3.5% through the expiration of the patents in 2018. The Company has appealed to the United States Court of Appeals for the Federal Circuit on various grounds. The Company believes it has strong arguments to overturn the jury verdict and/or reduce the damages award. While the ultimate outcome of the case may still result in a loss, the Company does not expect it to be material. SSL SSL Services, LLC (“SSL”) has asserted claims for patent infringement against the Company in the U.S. District Court for the Eastern District of Texas. The proceeding was instituted on March 25, 2015 . SSL alleges that the Company's AnyConnect products that include Virtual Private Networking functions infringed a U.S. patent owned by SSL. SSL seeks money damages from the Company. On August 18, 2015 , the Company petitioned the Patent Trial and Appeal Board (“PTAB”) of the United States Patent and Trademark Office to review whether the patent SSL has asserted against the Company is valid over prior art. On February 23, 2016 , a PTAB multi-judge panel found a reasonable likelihood that the Company would prevail in showing that SSL’s patent claims are unpatentable and instituted proceedings. On June 28, 2016 , in light of the PTAB’s decision to review the patent’s validity, the district court issued an order staying the district court case pending the final written decision from the PTAB. On February 22, 2017 , following a hearing, the PTAB issued its Final Written Decision that the patent’s claims are unpatentable. SSL has appealed this decision to the Court of Appeals for the Federal Circuit. The Company believes it has strong arguments that the Company's products do not infringe and the patent is invalid. If the Company does not prevail and a jury were to find that the Company's AnyConnect products infringe, the Company believes damages, as appropriately measured, would be immaterial. Due to uncertainty surrounding patent litigation processes, the Company is unable to reasonably estimate the ultimate outcome of this litigation at this time. Straight Path On September 24, 2014 , Straight Path IP Group, Inc. (“Straight Path”) asserted patent infringement claims against the Company in U.S. District Court for the Northern District of California, accusing the Company’s 9971 IP Phone, Unified Communications Manager working in conjunction with 9971 IP Phones, and Video Communication Server products of infringement. All of the asserted patents have expired and Straight Path was therefore limited to seeking monetary damages for the alleged past infringement. On November 13, 2017 , the Court granted the Company's motion for summary judgment of non-infringement, thereby dismissing Straight Path's claims against the Company and cancelling a trial which had been set for March 12, 2018 . DXC Technology On August 21, 2015 , the Company and Cisco Systems Capital Corporation (“Cisco Capital”) filed an action in Santa Clara County Superior Court for declaratory judgment and breach of contract against HP Inc. (“HP”) regarding a services agreement for management services of a third party’s network. HP prepaid the service agreement through a financing arrangement with Cisco Capital. HP terminated its agreement with the Company, and pursuant to the terms of the service agreement with HP, the Company determined the credit HP was entitled to receive under the agreement. HP disputed the Company’s credit calculation and contended that the Company owes a larger credit to HP than the Company had calculated. In December 2015, the Company filed an amended complaint which dropped the breach of contract claim in light of HP’s continuing payments to Cisco Capital under the financing arrangement. On January 19, 2016 , HP Inc. filed a counterclaim for breach of contract simultaneously with its answer to the amended complaint. The court continued the trial date from November 6, 2017 to March 12, 2018 . DXC Technology Corporation (“DXC”) reported that it is the party in interest in this matter pursuant to the Separation and Distribution Agreement between the then Hewlett-Packard Co. and Hewlett Packard Enterprise Company (“HPE") and the subsequent Separation and Distribution Agreement between HPE and DXC. On August 30, 2017 , the Company and DXC attended a court ordered mediation and, on September 1, 2017 , the parties jointly informed the court that they are continuing to discuss the details of a business resolution to the dispute. The Company is unable to reasonably estimate the ultimate outcome of this litigation due to uncertainty surrounding the litigation process. However, the Company does not anticipate that its obligation, if any, regarding the final outcome of the dispute would be material. In addition, the Company is subject to legal proceedings, claims, and litigation arising in the ordinary course of business, including intellectual property litigation. While the outcome of these matters is currently not determinable, the Company does not expect that the ultimate costs to resolve these matters will have a material adverse effect on its consolidated financial position, results of operations, or cash flows.

Shareholders' Equity

Shareholders' Equity	3 Months Ended
	Oct. 28, 2017
Stockholders' Equity Note [Abstract]
Shareholders' Equity	Shareholders’ Equity (a) Cash Dividends on Shares of Common Stock During the three months ended October 28, 2017 , the Company declared and paid cash dividends of $0.29 per common share, or $1.4 billion , on the Company’s outstanding common stock. During the three months ended October 29, 2016 , the Company declared and paid cash dividends of $0.26 per common share, or $1.3 billion , on the Company’s outstanding common stock. Any future dividends will be subject to the approval of the Company's Board of Directors. (b) Stock Repurchase Program In September 2001, the Company’s Board of Directors authorized a stock repurchase program. As of October 28, 2017 , the Company’s Board of Directors had authorized an aggregate repurchase of up to $112 billion of common stock under this program, and the remaining authorized repurchase amount was $10.1 billion with no termination date. A summary of the stock repurchase activity under the stock repurchase program, reported based on the trade date, is summarized as follows (in millions, except per-share amounts): Shares Repurchased Weighted- Average Price per Share Amount Repurchased Cumulative balance at July 29, 2017 4,709 $ 21.30 $ 100,303 Repurchase of common stock under the stock repurchase program (1) 51 31.80 1,620 Cumulative balance at October 28, 2017 4,760 $ 21.41 $ 101,923 (1) There were no stock repurchases pending settlement as of October 28, 2017 . There were $66 million of stock repurchases that were pending settlement as of July 29, 2017 . The purchase price for the shares of the Company’s stock repurchased is reflected as a reduction to shareholders’ equity. The Company is required to allocate the purchase price of the repurchased shares as (i) a reduction to retained earnings and (ii) a reduction of common stock and additional paid-in capital. (c) Restricted Stock Unit Withholdings For the three months ended October 28, 2017 and October 29, 2016 , the Company repurchased approximately 11 million and 13 million shares, or $342 million and $401 million of common stock, respectively, in settlement of employee tax withholding obligations due upon the vesting of restricted stock or stock units. (d) Preferred Stock Under the terms of the Company’s Articles of Incorporation, the Board of Directors may determine the rights, preferences, and terms of the Company’s authorized but unissued shares of preferred stock.

Employee Benefit Plans

Employee Benefit Plans	3 Months Ended
	Oct. 28, 2017
Retirement Benefits [Abstract]
Employee Benefit Plans	Employee Benefit Plans (a) Employee Stock Incentive Plans Stock Incentive Plan Program Description As of October 28, 2017 , the Company had one stock incentive plan: the 2005 Stock Incentive Plan (the “2005 Plan”). In addition, the Company has, in connection with the acquisitions of various companies, assumed the share-based awards granted under stock incentive plans of the acquired companies or issued share-based awards in replacement thereof. Share-based awards are designed to reward employees for their long-term contributions to the Company and provide incentives for them to remain with the Company. The number and frequency of share-based awards are based on competitive practices, operating results of the Company, government regulations, and other factors. The Company’s primary stock incentive plan is summarized as follows: 2005 Plan As of October 28, 2017 , the maximum number of shares issuable under the 2005 Plan over its term was 694 million shares, plus shares from certain previous plans that are forfeited or are terminated for any other reason before being exercised or settled. If any awards granted under the 2005 Plan are forfeited or are terminated for any other reason before being exercised or settled, the unexercised or unsettled shares underlying the awards will again be available under the 2005 Plan. In addition, starting November 19, 2013, shares withheld by the Company from an award other than a stock option or stock appreciation right to satisfy withholding tax liabilities resulting from such award will again be available for issuance, based on the fungible share ratio in effect on the date of grant. Pursuant to an amendment approved by the Company's shareholders on November 12, 2009, the number of shares available for issuance under the 2005 Plan is reduced by 1.5 shares for each share awarded as a stock grant or a stock unit, and any shares underlying awards outstanding from certain previous plans that expire unexercised at the end of their maximum terms become available for reissuance under the 2005 Plan. The 2005 Plan permits the granting of stock options, restricted stock, and restricted stock units ("RSUs"), the vesting of which may be performance-based or market-based along with the requisite service requirement, and stock appreciation rights to employees (including employee directors and officers), consultants of the Company and its subsidiaries and affiliates, and non-employee directors of the Company. Stock options and stock appreciation rights granted under the 2005 Plan have an exercise price of at least 100% of the fair market value of the underlying stock on the grant date. The expiration date for stock options and stock appreciation rights shall be no later than 10 years from the grant date. The stock options will generally become exercisable for 20% or 25% of the option shares one year from the date of grant and then ratably over the following 48 months or 36 months , respectively. Time-based stock grants and time-based RSUs will generally vest over a four year term. The majority of the performance-based and market-based RSUs vests at the end of the three -year requisite service period or earlier if the award recipient meets certain retirement eligibility conditions. Certain performance-based RSUs, that are based on the achievement of financial and/or non-financial operating goals, typically vest upon the achievement of milestones (and may require subsequent service periods), with overall vesting of the shares underlying the award ranging from six months to three years. The Compensation and Management Development Committee of the Board of Directors has the discretion to use different vesting schedules. Stock appreciation rights may be awarded in combination with stock options or stock grants, and such awards shall provide that the stock appreciation rights will not be exercisable unless the related stock options or stock grants are forfeited. Stock grants may be awarded in combination with non-statutory stock options, and such awards may provide that the stock grants will be forfeited in the event that the related non-statutory stock options are exercised. (b) Employee Stock Purchase Plan The Company has an Employee Stock Purchase Plan, which includes its subplan named the International Employee Stock Purchase Plan (together, the “Purchase Plan”), under which 621 million shares of the Company’s common stock have been reserved for issuance as of October 28, 2017 . Eligible employees are offered shares through a 24-month offering period, which consists of four consecutive 6-month purchase periods . Employees may purchase a limited number of shares of the Company’s stock at a discount of up to 15% of the lesser of the market value at the beginning of the offering period or the end of each 6-month purchase period. The Purchase Plan is scheduled to terminate on January 3, 2020 . No shares were issued under the Purchase Plan during each of the three months ended October 28, 2017 and October 29, 2016 , respectively. As of October 28, 2017 , 100 million shares were available for issuance under the Purchase Plan. (c) Summary of Share-Based Compensation Expense Share-based compensation expense consists primarily of expenses for stock options, stock purchase rights, restricted stock, and RSUs granted to employees. The following table summarizes share-based compensation expense (in millions): Three Months Ended October 28, 2017 October 29, 2016 Cost of sales—product $ 23 $ 21 Cost of sales—service 34 33 Share-based compensation expense in cost of sales 57 54 Research and development 136 126 Sales and marketing 135 140 General and administrative 64 49 Restructuring and other charges 6 3 Share-based compensation expense in operating expenses 341 318 Total share-based compensation expense $ 398 $ 372 Income tax benefit for share-based compensation $ 175 $ 105 As of October 28, 2017 , the total compensation cost related to unvested share-based awards not yet recognized was $2.9 billion , which is expected to be recognized over approximately 2.6 years on a weighted-average basis. (d) Share-Based Awards Available for Grant A summary of share-based awards available for grant is as follows (in millions): Share-Based Awards Available for Grant BALANCE AT JULY 30, 2016 242 Restricted stock, stock units, and other share-based awards granted (76 ) Share-based awards canceled/forfeited/expired 78 Shares withheld for taxes and not issued 28 BALANCE AT JULY 29, 2017 272 Restricted stock, stock units, and other share-based awards granted (16 ) Share-based awards canceled/forfeited/expired 5 Shares withheld for taxes and not issued 15 BALANCE AT OCTOBER 28, 2017 276 As reflected in the preceding table, for each share awarded as restricted stock or subject to a restricted stock unit award under the 2005 Plan, an equivalent of 1.5 shares was deducted from the available share-based award balance. For restricted stock units that were awarded with vesting contingent upon the achievement of future financial performance or market-based metrics, the maximum awards that can be achieved upon full vesting of such awards were reflected in the preceding table. (e) Restricted Stock and Stock Unit Awards A summary of the restricted stock and stock unit activity, which includes time-based and performance-based or market-based RSUs, is as follows (in millions, except per-share amounts): Restricted Stock/ Stock Units Weighted-Average Grant Date Fair Value per Share Aggregate Fair Value UNVESTED BALANCE AT JULY 30, 2016 145 $ 24.26 Granted 50 27.89 Assumed from acquisitions 15 32.21 Vested (54 ) 23.14 $ 1,701 Canceled/forfeited (15 ) 23.56 UNVESTED BALANCE AT JULY 29, 2017 141 26.94 Granted 10 30.19 Assumed from acquisitions 1 28.70 Vested (29 ) 24.52 $ 927 Canceled/forfeited (6 ) 28.73 UNVESTED BALANCE AT OCTOBER 28, 2017 117 $ 27.75 (f) Stock Option Awards A summary of the stock option activity is as follows (in millions, except per-share amounts): STOCK OPTIONS OUTSTANDING Number Outstanding Weighted-Average Exercise Price per Share BALANCE AT JULY 30, 2016 73 $ 26.78 Assumed from acquisitions 8 4.47 Exercised (14 ) 12.11 Canceled/forfeited/expired (55 ) 31.83 BALANCE AT JULY 29, 2017 12 6.15 Assumed from acquisitions 3 8.07 Exercised (2 ) 5.19 BALANCE AT OCTOBER 28, 2017 13 $ 6.68 The following table summarizes significant ranges of outstanding and exercisable stock options as of October 28, 2017 (in millions, except years and share prices): STOCK OPTIONS OUTSTANDING STOCK OPTIONS EXERCISABLE Range of Exercise Prices Number Outstanding Weighted- Average Remaining Contractual Life (in Years) Weighted- Average Exercise Price per Share Aggregate Intrinsic Value Number Exercisable Weighted- Average Exercise Price per Share Aggregate Intrinsic Value $ 0.01 – 30.00 13 6.6 $ 6.68 $ 371 7 $ 5.90 $ 193 The aggregate intrinsic value in the preceding table represents the total pretax intrinsic value, based on the Company’s closing stock price of $34.43 as of October 27, 2017 , that would have been received by the option holders had those option holders exercised their stock options as of that date. The total number of in-the-money stock options exercisable as of October 28, 2017 was 7 million . As of July 29, 2017 , 6 million outstanding stock options were exercisable and the weighted-average exercise price was $5.61 . (g) Valuation of Employee Share-Based Awards Time-based restricted stock units and performance-based restricted stock units ("PRSUs") that are based on the Company’s financial performance metrics or non-financial operating goals are valued using the market value of the Company’s common stock on the date of grant, discounted for the present value of expected dividends. On the date of grant, the Company estimated the fair value of the total shareholder return ("TSR") component of the PRSUs using a Monte Carlo simulation model. The assumptions for the valuation of time-based RSUs and PRSUs are summarized as follows: RESTRICTED STOCK UNITS PERFORMANCE BASED RESTRICTED STOCK UNITS Three Months Ended October 28, 2017 October 29, 2016 October 28, 2017 October 29, 2016 Number of shares granted (in millions) 7 7 3 3 Grant date fair value per share $ 29.81 $ 28.55 $ 31.31 $ 29.62 Weighted-average assumptions/inputs: Expected dividend yield 3.6 % 3.3 % 3.6 % 3.3 % Range of risk-free interest rates 1.0% – 1.9% 0.0% – 1.2% 1.0% – 1.6% 0.1% – 0.9% Range of expected volatilities for index N/A N/A 13.2% – 81.0% 16.7% – 46.8% The PRSUs granted during the periods presented are contingent on the achievement of the Company’s financial performance metrics, its comparative market-based returns, or the achievement of financial and non-financial operating goals. For the awards based on financial performance metrics or comparative market-based returns, generally 50% of the PRSUs are earned based on the average of annual operating cash flow and earnings per share goals established at the beginning of each fiscal year over a three -year performance period. Generally, the remaining 50% of the PRSUs are earned based on the Company’s TSR measured against the benchmark TSR of a peer group over the same period. Each PRSU recipient could vest in 0% to 150% of the target shares granted contingent on the achievement of the Company's financial performance metrics or its comparative market-based returns and 0% to 100% of the target shares granted contingent on the achievement of non-financial operating goals.

Comprehensive Income

Comprehensive Income	3 Months Ended
	Oct. 28, 2017
Comprehensive Income [Abstract]
Comprehensive Income	Comprehensive Income The components of AOCI, net of tax, and the other comprehensive income (loss), excluding noncontrolling interest, for the three months ended October 28, 2017 and October 29, 2016 are summarized as follows (in millions): Net Unrealized Gains (Losses) on Available-for-Sale Investments Net Unrealized Gains (Losses) Cash Flow Hedging Instruments Cumulative Translation Adjustment and Actuarial Gains (Losses) Accumulated Other Comprehensive Income (Loss) BALANCE AT JULY 29, 2017 $ 373 $ 32 $ (359 ) $ 46 Other comprehensive income (loss) before reclassifications attributable to Cisco Systems, Inc. 18 8 18 44 (Gains) losses reclassified out of AOCI (33 ) (13 ) 1 (45 ) Tax benefit (expense) (13 ) 1 (2 ) (14 ) BALANCE AT OCTOBER 28, 2017 $ 345 $ 28 $ (342 ) $ 31 Net Unrealized Gains (Losses) on Available-for-Sale Investments Net Unrealized Gains (Losses) Cash Flow Hedging Instruments Cumulative Translation Adjustment and Actuarial Gains (Losses) Accumulated Other Comprehensive Income (Loss) BALANCE AT JULY 30, 2016 $ 413 $ (59 ) $ (680 ) $ (326 ) Other comprehensive income (loss) before reclassifications attributable to Cisco Systems, Inc. (210 ) (46 ) (26 ) (282 ) (Gains) losses reclassified out of AOCI (15 ) 12 — (3 ) Tax benefit (expense) 86 2 (1 ) 87 BALANCE AT OCTOBER 29, 2016 $ 274 $ (91 ) $ (707 ) $ (524 ) The net gains (losses) reclassified out of AOCI into the Consolidated Statements of Operations, with line item location, during each period were as follows (in millions): Three Months Ended October 28, October 29, Comprehensive Income Components Income Before Taxes Line Item in Statements of Operations Net unrealized gains and losses on available-for-sale investments $ 33 $ 15 Other income (loss), net Net unrealized gains and losses on cash flow hedging instruments Foreign currency derivatives 10 (9 ) Operating expenses Foreign currency derivatives 3 (3 ) Cost of sales—service 13 (12 ) Cumulative translation adjustment and actuarial gains and losses (1 ) — Operating expenses Total amounts reclassified out of AOCI $ 45 $ 3

Income Taxes

Income Taxes	3 Months Ended
	Oct. 28, 2017
Income Tax Disclosure [Abstract]
Income Taxes	Income Taxes The following table provides details of income taxes (in millions, except percentages): Three Months Ended October 28, October 29, Income before provision for income taxes $ 2,962 $ 2,953 Provision for income taxes $ 568 $ 631 Effective tax rate 19.2 % 21.4 % As of October 28, 2017 , the Company had $2.1 billion of unrecognized tax benefit, of which $1.5 billion , if recognized, would favorably impact the effective tax rate. The Company regularly engages in discussions and negotiations with tax authorities regarding tax matters in various jurisdictions. The Company believes it is reasonably possible that certain federal, foreign and state tax matters may be concluded in the next 12 months. Specific positions that may be resolved include issues involving transfer pricing and various other matters. The Company estimates that the unrecognized tax benefits at October 28, 2017 could be reduced by approximately $100 million in the next 12 months.

Segment Information and Major C

Segment Information and Major Customers	3 Months Ended
	Oct. 28, 2017
Segment Reporting [Abstract]
Segment Information and Major Customers	Segment Information and Major Customers (a) Revenue and Gross Margin by Segment The Company conducts business globally and is primarily managed on a geographic basis consisting of three segments: the Americas, EMEA, and APJC. The Company’s management makes financial decisions and allocates resources based on the information it receives from its internal management system. Sales are attributed to a segment based on the ordering location of the customer. The Company does not allocate research and development, sales and marketing, or general and administrative expenses to its segments in this internal management system because management does not include the information in its measurement of the performance of the operating segments. In addition, the Company does not allocate amortization and impairment of acquisition-related intangible assets, share-based compensation expense, significant litigation settlements and other contingencies, charges related to asset impairments and restructurings, and certain other charges to the gross margin for each segment because management does not include this information in its measurement of the performance of the operating segments. Summarized financial information by segment for the three months ended October 28, 2017 and October 29, 2016 , based on the Company’s internal management system and as utilized by the Company’s Chief Operating Decision Maker ("CODM"), is as follows (in millions): Three Months Ended October 28, October 29, Revenue: Americas $ 7,350 $ 7,443 EMEA 2,909 3,013 APJC 1,877 1,896 Total $ 12,136 $ 12,352 Gross margin: Americas $ 4,722 $ 4,833 EMEA 1,839 2,013 APJC 1,165 1,204 Segment total 7,726 8,050 Unallocated corporate items (299 ) (166 ) Total $ 7,427 $ 7,884 Revenue in the United States was $6.5 billion and $6.6 billion for the three months ended October 28, 2017 and October 29, 2016 , respectively. (b) Revenue for Groups of Similar Products and Services The Company designs, manufactures, and sells Internet Protocol (IP)-based networking and other products related to the communications and IT industry and provides services associated with these products and their use. Effective in the first quarter of fiscal 2018, the Company began reporting its product and service revenue in the following five categories: Infrastructure Platforms, Applications, Security, Other Products, and Services. The change better aligns the Company's product categories with its evolving business model. Prior period amounts have been reclassified to conform to the current period's presentation. These products, primarily integrated by Cisco IOS Software, link geographically dispersed local-area networks (LANs), metropolitan-area networks (MANs), and wide-area networks (WANs). The following table presents revenue for groups of similar products and services (in millions): Three Months Ended October 28, October 29, Revenue: Infrastructure Platforms $ 6,970 $ 7,273 Applications 1,203 1,136 Security 585 540 Other Products 296 353 Total Product 9,054 9,302 Services 3,082 3,050 Total $ 12,136 $ 12,352 (c) Additional Segment Information The majority of the Company’s assets, excluding cash and cash equivalents and investments, was attributable to its U.S. operations as of each of October 28, 2017 and July 29, 2017 . The Company’s total cash and cash equivalents and investments held by various foreign subsidiaries were $69.1 billion and $67.5 billion as of October 28, 2017 and July 29, 2017 , respectively, and the remaining $2.5 billion and $3.0 billion at the respective period ends were available in the United States. Property and equipment information is based on the physical location of the assets. The following table presents property and equipment information for geographic areas (in millions): October 28, July 29, Property and equipment, net: United States $ 2,624 $ 2,711 International 578 611 Total $ 3,202 $ 3,322

Net Income per Share

Net Income per Share	3 Months Ended
	Oct. 28, 2017
Earnings Per Share [Abstract]
Net Income per Share	Net Income per Share The following table presents the calculation of basic and diluted net income per share (in millions, except per-share amounts): Three Months Ended October 28, October 29, Net income $ 2,394 $ 2,322 Weighted-average shares—basic 4,959 5,027 Effect of dilutive potential common shares 35 39 Weighted-average shares—diluted 4,994 5,066 Net income per share—basic $ 0.48 $ 0.46 Net income per share—diluted $ 0.48 $ 0.46 Antidilutive employee share-based awards, excluded 15 67 Employee equity share options, unvested shares, and similar equity instruments are treated as potential common shares outstanding in computing diluted earnings per share. Diluted shares outstanding include the dilutive effect of in-the-money options, unvested restricted stock, and restricted stock units. The dilutive effect of such equity awards is calculated based on the average share price for each fiscal period using the treasury stock method. Under the treasury stock method, the amount the employee must pay for exercising stock options and the amount of compensation cost for future service that has not yet recognized would be recorded in additional paid-in capital when the award becomes deductible are collectively assumed to be used to repurchase shares.

Recent Accounting Pronounceme29

Recent Accounting Pronouncements (Policies)	3 Months Ended
	Oct. 28, 2017
Accounting Policies [Abstract]
Fiscal Period	The fiscal year for Cisco Systems, Inc. (the “Company” or “Cisco”) is the 52 or 53 weeks ending on the last Saturday in July. Fiscal 2018 and fiscal 2017 are each 52-week fiscal years.
Basis of Presentation	The Consolidated Financial Statements include the accounts of Cisco and its subsidiaries. All intercompany accounts and transactions have been eliminated. The Company conducts business globally and is primarily managed on a geographic basis in the following three geographic segments: the Americas; Europe, Middle East, and Africa (EMEA); and Asia Pacific, Japan, and China (APJC). The accompanying financial data as of October 28, 2017 and for the three months ended October 28, 2017 and October 29, 2016 has been prepared by the Company, without audit, pursuant to the rules and regulations of the U.S. Securities and Exchange Commission ("SEC"). Certain information and footnote disclosures normally included in financial statements prepared in accordance with generally accepted accounting principles in the United States ("GAAP") have been condensed or omitted pursuant to such rules and regulations. The July 29, 2017 Consolidated Balance Sheet was derived from audited financial statements, but does not include all disclosures required by accounting principles generally accepted in the United States. However, the Company believes that the disclosures are adequate to make the information presented not misleading. These Consolidated Financial Statements should be read in conjunction with the Consolidated Financial Statements and the notes thereto included in the Company’s Annual Report on Form 10-K for the fiscal year ended July 29, 2017 . The Company consolidates its investments in a venture fund managed by SOFTBANK Corp. and its affiliates (“SOFTBANK”) as this is a variable interest entity and the Company is the primary beneficiary. The noncontrolling interests attributed to SOFTBANK are presented as a separate component from the Company’s equity in the equity section of the Consolidated Balance Sheets. SOFTBANK’s share of the earnings in the venture fund are not presented separately in the Consolidated Statements of Operations as these amounts are not material for any of the fiscal periods presented. In the opinion of management, all normal recurring adjustments necessary to present fairly the consolidated balance sheet as of October 28, 2017 ; the results of operations and the statements of comprehensive income, the statements of cash flows and equity for the three months ended October 28, 2017 and October 29, 2016 , as applicable, have been made. The results of operations for the three months ended October 28, 2017 are not necessarily indicative of the operating results for the full fiscal year or any future periods.
Reclassification	Certain reclassifications have been made to the amounts in prior periods in order to conform to the current period’s presentation. The Company has evaluated subsequent events through the date that the financial statements were issued.
New Accounting Updates Recently Adopted and Recent Accounting Standards or Updates Not Yet Effective	(a) New Accounting Updates Recently Adopted Share-Based Compensation In March 2016, the FASB issued an accounting standard update that impacts the accounting for share-based payment transactions, including income tax consequences, classification of awards as either equity or liabilities, and classification on the Consolidated Statements of Cash Flows. Cisco adopted this accounting standard update beginning the first quarter of fiscal 2018 on a prospective basis. This resulted in an overall decrease in the effective tax rate for the first quarter of fiscal 2018 due to recognition of excess tax benefits from share-based compensation. The application of this accounting standard update did not have a material impact on the Company's Consolidated Financial Statements. (b) Recent Accounting Standards or Updates Not Yet Effective Revenue Recognition In May 2014, the FASB issued a new accounting standard related to revenue recognition. The new standard will supersede nearly all U.S. GAAP on revenue recognition and eliminate industry-specific guidance. The underlying principle of the new standard is to recognize revenue when a customer obtains control of promised goods or services at an amount that reflects the consideration that is expected to be received in exchange for those goods or services. It also requires increased disclosures including the nature, amount, timing, and uncertainty of revenues and cash flows related to contracts with customers. The standard allows two methods of adoption: i) retrospectively to each prior period presented (“full retrospective method”), or ii) retrospectively with the cumulative effect recognized in retained earnings as of the date of adoption ("modified retrospective method"). Cisco will adopt the new standard using the modified retrospective method at the beginning of its first quarter of fiscal 2019. Cisco is on schedule in establishing new accounting policies, implementing systems and processes (including more extensive use of estimates), and internal controls necessary to support the requirements of the new standard. Cisco has completed its preliminary assessment of the financial statement impact of the new standard, as discussed below, and will continue to update that assessment as more information becomes available. The new standard will primarily impact Cisco’s revenue recognition for software arrangements and sales to two-tier distributors. In both areas, the new standard will accelerate the recognition of revenue. The table below details both the current and expected revenue recognition timing in these areas: Current Revenue Standard New Revenue Standard Software arrangements: Perpetual software licenses Upfront Upfront Term software licenses Ratable Upfront Security software licenses Ratable Ratable Enterprise license agreements Ratable Upfront Software support services Ratable Ratable Software-as-a-service Ratable Ratable Two-tier distribution Sell-Through Sell-In Cisco expects that the new standard will not have a material impact on total revenue in the year of adoption based on two factors: i) revenue will be accelerated consistent with the changes in timing as indicated in the preceding table, largely offset by ii) the reduction of revenue from software arrangements where revenue was previously deferred in prior periods and recognized ratably over time as required under the current standard. This preliminary assessment is based on the types and number of revenue arrangements currently in place. The exact impact of the new standard will be dependent on facts and circumstances at adoption and could vary from quarter to quarter. In addition to the above revenue recognition timing impacts, the new standard will require incremental contract acquisition costs (such as sales commissions) for customer contracts to be capitalized and amortized over the contract period. Currently, these costs are expensed as incurred. Cisco will be required to record cumulative effect adjustments to retained earnings upon adopting the new standard at the beginning of fiscal 2019. The most significant of these adjustments will be to reduce product deferred revenue and increase retained earnings at the date of adoption to reflect revenue that would have been already recognized under the new standard related to existing arrangements. There will also be an adjustment to increase accounts receivable and reduce inventories related to the changes in revenue recognition on sales to two-tier distributors. Lastly, an adjustment will be recorded to establish an asset and increase retained earnings related to the requirement to capitalize incremental contract acquisition costs for customer contracts. Financial Instruments In January 2016, the FASB issued an accounting standard update that changes the accounting for equity investments, financial liabilities under the fair value option, and the presentation and disclosure requirements for financial instruments. The accounting standard update will be effective for Cisco beginning in the first quarter of fiscal 2019, and early adoption is permitted. The most significant impact of this accounting standard update for Cisco is that it will require the remeasurement of investments that are not accounted for under the equity method at fair value at the end of each reporting period with the changes recorded to the income statement. While Cisco is currently evaluating the impact of this accounting standard update on its Consolidated Financial Statements, Cisco expects that this accounting standard update will increase the variability of other income (loss), net. Leases In February 2016, the FASB issued an accounting standard update related to leases requiring lessees to recognize operating and financing lease liabilities on the balance sheet, as well as corresponding right-of-use assets. The new lease standard also makes some changes to lessor accounting and aligns key aspects of the lessor accounting model with the revenue recognition standard. In addition, disclosures will be required to enable users of financial statements to assess the amount, timing, and uncertainty of cash flows arising from leases. The accounting standard update will be effective for Cisco beginning in the first quarter of fiscal 2020 on a modified retrospective basis, and early adoption is permitted. Cisco is currently evaluating the impact of this accounting standard update on its Consolidated Financial Statements. Credit Losses of Financial Instruments In June 2016, the FASB issued an accounting standard update that requires measurement and recognition of expected credit losses for financial assets held based on historical experience, current conditions, and reasonable and supportable forecasts that affect the collectibility of the reported amount. The accounting standard update will be effective for Cisco beginning in the first quarter of fiscal 2021 on a modified retrospective basis, and early adoption in fiscal 2020 is permitted. Cisco is currently evaluating the impact of this accounting standard update on its Consolidated Financial Statements. Classification of Cash Flow Elements In August 2016, the FASB issued an accounting standard update related to the classification of certain cash receipts and cash payments on the statement of cash flows. The accounting standard update will be effective for Cisco beginning in the first quarter of fiscal 2019 on a retrospective basis, and early adoption is permitted. Cisco is currently evaluating the impact of this accounting standard update on its Consolidated Statements of Cash Flows. Income Taxes on Intra-Entity Transfers of Assets In October 2016, the FASB issued an accounting standard update that requires recognition of the income tax consequences of intra-entity transfers of assets (other than inventory) at the transaction date. The accounting standard update will be effective for Cisco beginning in the first quarter of fiscal 2019 on a modified retrospective basis, and early adoption is permitted. Cisco is currently evaluating the impact of this accounting standard update on its Consolidated Financial Statements. Restricted Cash in Statement of Cash Flow In November 2016, the FASB issued an accounting standard update that provides guidance on the classification and presentation of changes in restricted cash and cash equivalents in the statement of cash flows. The accounting standard update will be effective for Cisco beginning in the first quarter of fiscal 2019 using a retrospective transition method to each period presented, and early adoption is permitted. Cisco does not expect that this accounting standard update will have a material impact on its Consolidated Statements of Cash Flows. Definition of a Business In January 2017, the FASB issued an accounting standard update that clarifies the definition of a business to help companies evaluate whether acquisition or disposal transactions should be accounted for as asset groups or as businesses. The accounting standard update will be effective for Cisco beginning in the first quarter of fiscal 2019 on a prospective basis. The impact of this accounting standard update will be fact dependent, but Cisco expects that some transactions that were previously accounted for as business combinations or disposal transactions will be accounted for as asset purchases or asset sales under the accounting standard update. Simplifying the Test for Goodwill Impairment In January 2017, the FASB issued an accounting standard update that removes Step 2 of the goodwill impairment test, which requires the assessment of fair value of individual assets and liabilities of a reporting unit to measure goodwill impairments. Goodwill impairment will now be the amount by which a reporting unit's carrying value exceeds its fair value. The accounting standard update will be effective for Cisco beginning in the first quarter of fiscal 2021 on a prospective basis, and early adoption is permitted. Cisco does not expect that this accounting standard update will impact its Consolidated Financial Statements.
Financing Receivables and Operating Leases	Financing receivables primarily consist of lease receivables, loan receivables, and financed service contracts. Lease receivables represent sales-type and direct-financing leases resulting from the sale of the Company’s and complementary third-party products and are typically collateralized by a security interest in the underlying assets. Lease receivables consist of arrangements with terms of four years on average. Loan receivables represent financing arrangements related to the sale of the Company’s hardware, software, and services, which may include additional funding for other costs associated with network installation and integration of the Company’s products and services. Loan receivables generally have terms of up to three years . Financed service contracts include financing receivables related to technical support and advanced services. Revenue related to the technical support services is typically deferred and included in deferred service revenue and is recognized ratably over the period during which the related services are to be performed, which typically ranges from one to three years.
Impairment of Financing Receivable	The Company assesses the allowance for credit loss related to financing receivables on either an individual or a collective basis. The Company considers various factors in evaluating lease and loan receivables and the earned portion of financed service contracts for possible impairment on an individual basis. These factors include the Company’s historical experience, credit quality and age of the receivable balances, and economic conditions that may affect a customer’s ability to pay. When the evaluation indicates that it is probable that all amounts due pursuant to the contractual terms of the financing agreement, including scheduled interest payments, are unable to be collected, the financing receivable is considered impaired. All such outstanding amounts, including any accrued interest, will be assessed and fully reserved at the customer level. The Company’s internal credit risk ratings are categorized as 1 through 10 , with the lowest credit risk rating representing the highest quality financing receivables. Typically, the Company also considers receivables with a risk rating of 8 or higher to be impaired and will include them in the individual assessment for allowance. These balances, as of October 28, 2017 and July 29, 2017 , are presented under “(b) Credit Quality of Financing Receivables” above. The Company evaluates the remainder of its financing receivables portfolio for impairment on a collective basis and records an allowance for credit loss at the portfolio segment level. When evaluating the financing receivables on a collective basis, the Company uses expected default frequency rates published by a major third-party credit-rating agency as well as its own historical loss rate in the event of default, while also systematically giving effect to economic conditions, concentration of risk, and correlation.
Fair Value Measurement	Fair value is defined as the price that would be received from selling an asset or paid to transfer a liability in an orderly transaction between market participants at the measurement date. When determining the fair value measurements for assets and liabilities required or permitted to be either recorded or disclosed at fair value, the Company considers the principal or most advantageous market in which it would transact, and it also considers assumptions that market participants would use when pricing the asset or liability. (a) Fair Value Hierarchy The accounting guidance for fair value measurement requires an entity to maximize the use of observable inputs and minimize the use of unobservable inputs when measuring fair value. The standard establishes a fair value hierarchy based on the level of independent, objective evidence surrounding the inputs used to measure fair value. A financial instrument’s categorization within the fair value hierarchy is based upon the lowest level of input that is significant to the fair value measurement. The fair value hierarchy is as follows: Level 1 applies to assets or liabilities for which there are quoted prices in active markets for identical assets or liabilities. Level 2 applies to assets or liabilities for which there are inputs other than quoted prices that are observable for the asset or liability, such as quoted prices for similar assets or liabilities in active markets; quoted prices for identical assets or liabilities in markets with insufficient volume or infrequent transactions (less active markets); or model-derived valuations in which significant inputs are observable or can be derived principally from, or corroborated by, observable market data. Level 3 applies to assets or liabilities for which there are unobservable inputs to the valuation methodology that are significant to the measurement of the fair value of the assets or liabilities.
Fair Value of Financial Instruments	Level 1 publicly traded equity securities are determined by using quoted prices in active markets for identical assets. Level 2 fixed income securities are priced using quoted market prices for similar instruments or nonbinding market prices that are corroborated by observable market data. The Company uses inputs such as actual trade data, benchmark yields, broker/dealer quotes, and other similar data, which are obtained from quoted market prices, independent pricing vendors, or other sources, to determine the ultimate fair value of these assets and liabilities. The Company uses such pricing data as the primary input to make its assessments and determinations as to the ultimate valuation of its investment portfolio and has not made, during the periods presented, any material adjustments to such inputs. The Company is ultimately responsible for the financial statements and underlying estimates. The Company’s derivative instruments are primarily classified as Level 2, as they are not actively traded and are valued using pricing models that use observable market inputs. The Company did not have any transfers between Level 1 and Level 2 fair value measurements during the periods presented. Level 3 assets include certain derivative instruments, the values of which are determined based on discounted cash flow models using inputs that the Company could not corroborate with market data. These assets were measured at fair value due to events or circumstances the Company identified as having significant impact on their fair value during the respective periods. To arrive at the valuation of these assets, the Company considers any significant changes in the financial metrics and economic variables and also uses third-party valuation reports to assist in the valuation as necessary. The fair value measurement of the impaired investments was classified as Level 3 because significant unobservable inputs were used in the valuation due to the absence of quoted market prices and inherent lack of liquidity. Significant unobservable inputs, which included financial metrics of comparable private and public companies, financial condition and near-term prospects of the investees, recent financing activities of the investees, and the investees’ capital structure as well as other economic variables, reflected the assumptions market participants would use in pricing these assets. The impairment charges, representing the difference between the net book value and the fair value as a result of the evaluation, were recorded to other income (loss), net. The remaining carrying value of the investments that were impaired was $25 million and $46 million as of October 28, 2017 and October 29, 2016 , respectively. The fair value for purchased intangible assets measured at fair value on a nonrecurring basis was categorized as Level 3 due to the use of significant unobservable inputs in the valuation. Significant unobservable inputs that were used included expected revenues and net income related to the assets and the expected life of the assets. The difference between the estimated fair value and the carrying value of the assets was recorded as an impairment charge, which was included in product cost of sales and operating expenses as applicable.
Derivatives	The Company uses derivative instruments primarily to manage exposures to foreign currency exchange rate, interest rate, and equity price risks. The Company’s primary objective in holding derivatives is to reduce the volatility of earnings and cash flows associated with changes in foreign currency exchange rates, interest rates, and equity prices. The Company’s derivatives expose it to credit risk to the extent that the counterparties may be unable to meet the terms of the agreement. The Company does, however, seek to mitigate such risks by limiting its counterparties to major financial institutions. In addition, the potential risk of loss with any one counterparty resulting from this type of credit risk is monitored. Management does not expect material losses as a result of defaults by counterparties.
Offsetting of Derivative Instruments	The Company presents its derivative instruments at gross fair values in the Consolidated Balance Sheets. However, the Company’s master netting and other similar arrangements with the respective counterparties allow for net settlement under certain conditions, which are designed to reduce credit risk by permitting net settlement with the same counterparty. To further limit credit risk, the Company also enters into collateral security arrangements related to certain derivative instruments whereby cash is posted as collateral between the counterparties based on the fair market value of the derivative instrument.
Hedging Derivatives	The Company conducts business globally in numerous currencies. Therefore, it is exposed to adverse movements in foreign currency exchange rates. To limit the exposure related to foreign currency changes, the Company enters into foreign currency contracts. The Company does not enter into such contracts for speculative purposes. The Company hedges forecasted foreign currency transactions related to certain operating expenses and service cost of sales with currency options and forward contracts. These currency options and forward contracts, designated as cash flow hedges, generally have maturities of less than 24 months . The Company assesses effectiveness based on changes in total fair value of the derivatives. The effective portion of the derivative instrument’s gain or loss is initially reported as a component of AOCI and subsequently reclassified into earnings when the hedged exposure affects earnings. The ineffective portion, if any, of the gain or loss is reported in earnings immediately. During the periods presented, the Company did not discontinue any cash flow hedges for which it was probable that a forecasted transaction would not occur. The Company enters into foreign exchange forward and option contracts to reduce the short-term effects of foreign currency fluctuations on assets and liabilities such as foreign currency receivables, including long-term customer financings, investments, and payables. These derivatives are not designated as hedging instruments. Gains and losses on the contracts are included in other income (loss), net, and substantially offset foreign exchange gains and losses from the remeasurement of intercompany balances or other current assets, investments, or liabilities denominated in currencies other than the functional currency of the reporting entity. The Company hedges certain net investments in its foreign operations with forward contracts to reduce the effects of foreign currency fluctuations on the Company’s net investment in those foreign subsidiaries. (d) Interest Rate Risk Interest Rate Derivatives, Investments The Company’s primary objective for holding fixed income securities is to achieve an appropriate investment return consistent with preserving principal and managing risk. To realize these objectives, the Company may utilize interest rate swaps or other derivatives designated as fair value or cash flow hedges. As of October 28, 2017 and July 29, 2017 , the Company did not have any outstanding interest rate derivatives related to its fixed income securities. Interest Rate Derivatives Designated as Fair Value Hedges, Long-Term Debt In the three months ended October 28, 2017 , the Company did not enter into any interest rate swaps. In prior fiscal years, the Company entered into interest rate swaps designated as fair value hedges related to fixed-rate senior notes that are due in fiscal 2019 through 2025. Under these interest rate swaps, the Company receives fixed-rate interest payments and makes interest payments based on LIBOR plus a fixed number of basis points. The effect of such swaps is to convert the fixed interest rates of the senior fixed-rate notes to floating interest rates based on LIBOR. The gains and losses related to changes in the fair value of the interest rate swaps are included in interest expense and substantially offset changes in the fair value of the hedged portion of the underlying debt that are attributable to the changes in market interest rates. The fair value of the interest rate swaps was reflected in other current assets and other assets. (e) Equity Price Risk The Company may hold equity securities for strategic purposes or to diversify its overall investment portfolio. The publicly traded equity securities in the Company’s portfolio are subject to price risk. To manage its exposure to changes in the fair value of certain equity securities, the Company has periodically entered into equity derivatives that are designated as fair value hedges. The changes in the value of the hedging instruments are included in other income (loss), net, and offset the change in the fair value of the underlying hedged investment.
Derivatives Not Designated as Hedges	In addition, the Company periodically enters into equity derivatives that are not designated as accounting hedges. The changes in the fair value of these derivatives are also included in other income (loss), net. The Company is also exposed to variability in compensation charges related to certain deferred compensation obligations to employees. Although not designated as accounting hedges, the Company utilizes derivatives such as total return swaps to economically hedge this exposure.
Hedge Effectiveness	For the periods presented, amounts excluded from the assessment of hedge effectiveness were not material for fair value, cash flow, and net investment hedges. In addition, hedge ineffectiveness for fair value, cash flow, and net investment hedges was not material for any of the periods presented.
Commitments and Contingencies	The Company purchases components from a variety of suppliers and uses several contract manufacturers to provide manufacturing services for its products. During the normal course of business, in order to manage manufacturing lead times and help ensure adequate component supply, the Company enters into agreements with contract manufacturers and suppliers that either allow them to procure inventory based upon criteria as defined by the Company or establish the parameters defining the Company’s requirements. A significant portion of the Company’s reported purchase commitments arising from these agreements consists of firm, noncancelable, and unconditional commitments. In certain instances, these agreements allow the Company the option to cancel, reschedule, and adjust the Company’s requirements based on its business needs prior to firm orders being placed. The Company records a liability for firm, noncancelable, and unconditional purchase commitments for quantities in excess of its future demand forecasts consistent with the valuation of the Company’s excess and obsolete inventory.
Indemnifications	In the normal course of business, the Company indemnifies other parties, including customers, lessors, and parties to other transactions with the Company, with respect to certain matters. The Company has agreed to hold such parties harmless against losses arising from a breach of representations or covenants or out of intellectual property infringement or other claims made against certain parties. These agreements may limit the time within which an indemnification claim can be made and the amount of the claim.
Segment Information	The Company conducts business globally and is primarily managed on a geographic basis consisting of three segments: the Americas, EMEA, and APJC. The Company’s management makes financial decisions and allocates resources based on the information it receives from its internal management system. Sales are attributed to a segment based on the ordering location of the customer. The Company does not allocate research and development, sales and marketing, or general and administrative expenses to its segments in this internal management system because management does not include the information in its measurement of the performance of the operating segments. In addition, the Company does not allocate amortization and impairment of acquisition-related intangible assets, share-based compensation expense, significant litigation settlements and other contingencies, charges related to asset impairments and restructurings, and certain other charges to the gross margin for each segment because management does not include this information in its measurement of the performance of the operating segments.
Net Income per Share	Employee equity share options, unvested shares, and similar equity instruments are treated as potential common shares outstanding in computing diluted earnings per share. Diluted shares outstanding include the dilutive effect of in-the-money options, unvested restricted stock, and restricted stock units. The dilutive effect of such equity awards is calculated based on the average share price for each fiscal period using the treasury stock method. Under the treasury stock method, the amount the employee must pay for exercising stock options and the amount of compensation cost for future service that has not yet recognized would be recorded in additional paid-in capital when the award becomes deductible are collectively assumed to be used to repurchase shares.

Supplemental Information (Table

Supplemental Information (Tables)	3 Months Ended
	Oct. 28, 2017
Stockholders' Equity Note [Abstract]
Stock Repurchases Since Inception Of Program	The stock repurchases since the inception of this program and the related impacts on Cisco shareholders’ equity are summarized in the following table (in millions): Shares of Common Stock Common Stock and Additional Paid-In Capital Retained Earnings Total Cisco Shareholders’ Equity Repurchases of common stock under the repurchase program 4,760 $ 25,407 $ 76,516 $ 101,923

Recent Accounting Pronounceme31

Recent Accounting Pronouncements (Tables)	3 Months Ended
	Oct. 28, 2017
Accounting Policies [Abstract]
Summary of Current and Expected Revenue Recognition Timing	The table below details both the current and expected revenue recognition timing in these areas: Current Revenue Standard New Revenue Standard Software arrangements: Perpetual software licenses Upfront Upfront Term software licenses Ratable Upfront Security software licenses Ratable Ratable Enterprise license agreements Ratable Upfront Software support services Ratable Ratable Software-as-a-service Ratable Ratable Two-tier distribution Sell-Through Sell-In

Acquisitions and Divestitures (

Acquisitions and Divestitures (Tables)	3 Months Ended
	Oct. 28, 2017
Business Combinations [Abstract]
Schedule of Business Acquisitions, by Acquisition	A summary of the allocation of the total purchase consideration is presented as follows (in millions): Purchase Consideration Net Tangible Assets Acquired (Liabilities Assumed) Purchased Intangible Assets Goodwill Viptela $ 497 $ (18 ) $ 180 $ 335 Springpath 248 (11 ) 160 99 Other 16 1 6 9 Total $ 761 $ (28 ) $ 346 $ 443

Goodwill and Purchased Intang33

Goodwill and Purchased Intangible Assets (Tables)	3 Months Ended
	Oct. 28, 2017
Goodwill and Intangible Assets Disclosure [Abstract]
Goodwill By Reportable Segment	The following table presents the goodwill allocated to the Company’s reportable segments as of and during the three months ended October 28, 2017 (in millions): Balance at Balance at July 29, 2017 Acquisitions Other October 28, 2017 Americas $ 18,691 $ 323 $ 15 $ 19,029 EMEA 7,057 92 6 7,155 APJC 4,018 28 3 4,049 Total $ 29,766 $ 443 $ 24 $ 30,233
Schedule Of Intangible Assets Acquired Through Business Combinations	The following table presents details of the Company’s intangible assets acquired through acquisitions completed during the three months ended October 28, 2017 (in millions, except years): FINITE LIVES INDEFINITE LIVES TOTAL TECHNOLOGY CUSTOMER RELATIONSHIPS OTHER IPR&D Weighted- Average Useful Life (in Years) Amount Weighted- Average Useful Life (in Years) Amount Weighted- Average Useful Life (in Years) Amount Amount Amount Viptela 5.0 $ 144 6.0 $ 35 1.0 $ 1 $ — $ 180 Springpath 4.0 157 0.0 — 0.0 — 3 160 Other 5.0 3 4.0 3 0.0 — — 6 Total $ 304 $ 38 $ 1 $ 3 $ 346
Schedule Of Purchased Intangible Assets	The following tables present details of the Company’s purchased intangible assets (in millions): October 28, 2017 Gross Accumulated Amortization Net Purchased intangible assets with finite lives: Technology $ 3,465 $ (1,514 ) $ 1,951 Customer relationships 1,391 (818 ) 573 Other 82 (44 ) 38 Total purchased intangible assets with finite lives 4,938 (2,376 ) 2,562 In-process research and development, with indefinite lives 115 — 115 Total $ 5,053 $ (2,376 ) $ 2,677 July 29, 2017 Gross Accumulated Amortization Net Purchased intangible assets with finite lives: Technology $ 3,182 $ (1,386 ) $ 1,796 Customer relationships 1,353 (765 ) 588 Other 82 (38 ) 44 Total purchased intangible assets with finite lives 4,617 (2,189 ) 2,428 In-process research and development, with indefinite lives 111 — 111 Total $ 4,728 $ (2,189 ) $ 2,539
Schedule Of Amortization Of Purchased Intangible Assets	The following table presents the amortization of purchased intangible assets, including impairment charges (in millions): Three Months Ended October 28, 2017 October 29, 2016 Amortization of purchased intangible assets: Cost of sales $ 154 $ 129 Operating expenses Amortization of purchased intangible assets 61 78 Restructuring and other charges — 38 Total $ 215 $ 245
Schedule Of Estimated Future Amortization Expense Of Purchased Intangible Assets	The estimated future amortization expense of purchased intangible assets with finite lives as of October 28, 2017 is as follows (in millions): Fiscal Year Amount 2018 (remaining nine months) $ 647 2019 776 2020 559 2021 362 2022 145 Thereafter 73 Total $ 2,562

Restructuring and Other Charg34

Restructuring and Other Charges (Tables)	3 Months Ended
	Oct. 28, 2017
Restructuring Charges [Abstract]
Liabilities Related To Restructuring And Other Charges	The following tables summarize the activities related to the restructuring and other charges (in millions): FISCAL 2017 AND PRIOR PLANS Employee Severance Other Total Liability as of July 29, 2017 $ 74 $ 43 $ 117 Charges 145 7 152 Cash payments (79 ) (16 ) (95 ) Non-cash items — (6 ) (6 ) Liability as of October 28, 2017 $ 140 $ 28 $ 168 FISCAL 2017 AND PRIOR PLANS Employee Severance Other Total Liability as of July 30, 2016 $ 21 $ 24 $ 45 Charges 369 42 411 Cash payments (269 ) (1 ) (270 ) Non-cash items (4 ) (43 ) (47 ) Liability as of October 29, 2016 $ 117 $ 22 $ 139

Balance Sheet Details (Tables)

Balance Sheet Details (Tables)	3 Months Ended
	Oct. 28, 2017
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Inventories	The following tables provide details of selected balance sheet items (in millions): October 28, July 29, Inventories: Raw materials $ 358 $ 289 Work in Process 1 1 Finished goods: Distributor inventory and deferred cost of sales 457 451 Manufactured finished goods 550 552 Total finished goods 1,007 1,003 Service-related spares 303 300 Demonstration systems 24 23 Total $ 1,693 $ 1,616
Property And Equipment, Net	Property and equipment, net: Gross property and equipment: Land, buildings, and building and leasehold improvements $ 4,854 $ 4,926 Computer equipment and related software 1,251 1,258 Production, engineering, and other equipment 5,681 5,707 Operating lease assets 352 356 Furniture and fixtures 393 572 Total gross property and equipment 12,531 12,819 Less: accumulated depreciation and amortization (9,329 ) (9,497 ) Total $ 3,202 $ 3,322
Deferred Revenue	Deferred revenue: Service $ 10,991 $ 11,302 Product: Deferred revenue related to recurring software and subscription offers 5,213 4,971 Other product deferred revenue 2,361 2,221 Total product deferred revenue 7,574 7,192 Total $ 18,565 $ 18,494 Reported as: Current $ 10,920 $ 10,821 Noncurrent 7,645 7,673 Total $ 18,565 $ 18,494

Financing Receivables and Ope36

Financing Receivables and Operating Leases (Tables)	3 Months Ended
	Oct. 28, 2017
Receivables [Abstract]
Financing Receivables	A summary of the Company's financing receivables is presented as follows (in millions): October 28, 2017 Lease Receivables Loan Receivables Financed Service Contracts Total Gross $ 2,848 $ 4,748 $ 2,583 $ 10,179 Residual value 167 — — 167 Unearned income (143 ) — — (143 ) Allowance for credit loss (160 ) (106 ) (23 ) (289 ) Total, net $ 2,712 $ 4,642 $ 2,560 $ 9,914 Reported as: Current $ 1,290 $ 2,236 $ 1,512 $ 5,038 Noncurrent 1,422 2,406 1,048 4,876 Total, net $ 2,712 $ 4,642 $ 2,560 $ 9,914 July 29, 2017 Lease Receivables Loan Receivables Financed Service Contracts Total Gross $ 2,784 $ 4,560 $ 2,517 $ 9,861 Residual value 173 — — 173 Unearned income (145 ) — — (145 ) Allowance for credit loss (162 ) (103 ) (30 ) (295 ) Total, net $ 2,650 $ 4,457 $ 2,487 $ 9,594 Reported as: Current $ 1,301 $ 2,104 $ 1,451 $ 4,856 Noncurrent 1,349 2,353 1,036 4,738 Total, net $ 2,650 $ 4,457 $ 2,487 $ 9,594
Contractual Maturities Of The Gross Lease Receivables	Future minimum lease payments to the Company on lease receivables as of October 28, 2017 are summarized as follows (in millions): Fiscal Year Amount 2018 (remaining nine months) $ 1,106 2019 932 2020 512 2021 239 2022 57 Thereafter 2 Total $ 2,848
Schedule Of Internal Credit Risk Rating For Each Portfolio Segment And Class	Gross receivables, excluding residual value, less unearned income categorized by the Company’s internal credit risk rating as of October 28, 2017 and July 29, 2017 are summarized as follows (in millions): INTERNAL CREDIT RISK RATING October 28, 2017 1 to 4 5 to 6 7 and Higher Total Lease receivables $ 1,320 $ 1,337 $ 48 $ 2,705 Loan receivables 2,988 1,571 189 4,748 Financed service contracts 1,656 911 16 2,583 Total $ 5,964 $ 3,819 $ 253 $ 10,036 INTERNAL CREDIT RISK RATING July 29, 2017 1 to 4 5 to 6 7 and Higher Total Lease receivables $ 1,408 $ 1,181 $ 50 $ 2,639 Loan receivables 2,865 1,516 179 4,560 Financed service contracts 1,593 902 22 2,517 Total $ 5,866 $ 3,599 $ 251 $ 9,716
Schedule Of Financing Receivables By Portfolio Segment And Class Aging Analysis	The following tables present the aging analysis of gross receivables, excluding residual value and less unearned income as of October 28, 2017 and July 29, 2017 (in millions): DAYS PAST DUE (INCLUDES BILLED AND UNBILLED) October 28, 2017 31-60 61-90 91+ Total Past Due Current Total Nonaccrual Financing Receivables Impaired Financing Receivables Lease receivables $ 161 $ 86 $ 320 $ 567 $ 2,138 $ 2,705 $ 14 $ 14 Loan receivables 145 81 407 633 4,115 4,748 44 44 Financed service contracts 261 184 106 551 2,032 2,583 13 2 Total $ 567 $ 351 $ 833 $ 1,751 $ 8,285 $ 10,036 $ 71 $ 60 DAYS PAST DUE (INCLUDES BILLED AND UNBILLED) July 29, 2017 31-60 61-90 91+ Total Past Due Current Total Nonaccrual Financing Receivables Impaired Financing Receivables Lease receivables $ 160 $ 60 $ 216 $ 436 $ 2,203 $ 2,639 $ 14 $ 14 Loan receivables 230 48 259 537 4,023 4,560 43 43 Financed service contracts 160 77 523 760 1,757 2,517 18 2 Total $ 550 $ 185 $ 998 $ 1,733 $ 7,983 $ 9,716 $ 75 $ 59
Allowance For Credit Loss And Related Financing Receivables	The allowances for credit loss and the related financing receivables are summarized as follows (in millions): CREDIT LOSS ALLOWANCES Lease Loan Financed Service Total Allowance for credit loss as of July 29, 2017 $ 162 $ 103 $ 30 $ 295 Provisions (2 ) 2 (6 ) (6 ) Foreign exchange and other — 1 (1 ) — Allowance for credit loss as of October 28, 2017 $ 160 $ 106 $ 23 $ 289 CREDIT LOSS ALLOWANCES Lease Loan Financed Service Total Allowance for credit loss as of July 30, 2016 $ 230 $ 97 $ 48 $ 375 Provisions (4 ) 12 — 8 Foreign exchange and other 1 2 — 3 Allowance for credit loss as of October 29, 2016 $ 227 $ 111 $ 48 $ 386
Schedule of Property Subject to or Available for Operating Lease	Amounts relating to equipment on operating lease assets and the associated accumulated depreciation are summarized as follows (in millions): October 28, 2017 July 29, 2017 Operating lease assets $ 352 $ 356 Accumulated depreciation (221 ) (212 ) Operating lease assets, net $ 131 $ 144
Schedule of Future Minimum Rental Payments for Operating Leases	Minimum future rentals on noncancelable operating leases as of October 28, 2017 are summarized as follows (in millions): Fiscal Year Amount 2018 (remaining nine months) $ 139 2019 110 2020 48 2021 7 Thereafter 2 Total $ 306

Investments (Tables)

Investments (Tables)	3 Months Ended
	Oct. 28, 2017
Investments, Debt and Equity Securities [Abstract]
Summary Of Available-For-Sale Investments	The following tables summarize the Company’s available-for-sale investments (in millions): October 28, 2017 Amortized Cost Gross Unrealized Gains Gross Unrealized Losses Fair Value Fixed income securities: U.S. government securities $ 20,564 $ — $ (93 ) $ 20,471 U.S. government agency securities 1,923 — (6 ) 1,917 Non-U.S. government and agency securities 358 — (1 ) 357 Corporate debt securities 31,999 162 (131 ) 32,030 U.S. agency mortgage-backed securities 2,095 2 (23 ) 2,074 Commercial paper 1,775 — — 1,775 Certificates of deposit 140 — — 140 Total fixed income securities 58,854 164 (254 ) 58,764 Publicly traded equity securities 1,134 653 (6 ) 1,781 Total (1) $ 59,988 $ 817 $ (260 ) $ 60,545 July 29, 2017 Amortized Cost Gross Unrealized Gains Gross Unrealized Losses Fair Value Fixed income securities: U.S. government securities $ 19,880 $ 3 $ (60 ) $ 19,823 U.S. government agency securities 2,057 — (5 ) 2,052 Non-U.S. government and agency securities 389 — (1 ) 388 Corporate debt securities 31,626 202 (93 ) 31,735 U.S. agency mortgage-backed securities 2,037 3 (17 ) 2,023 Commercial paper 996 — — 996 Certificates of deposit 60 — — 60 Total fixed income securities 57,045 208 (176 ) 57,077 Publicly traded equity securities 1,180 554 (27 ) 1,707 Total (1) $ 58,225 $ 762 $ (203 ) $ 58,784 (1) Includes investments that were pending settlement as of the respective fiscal years. The net unsettled investment purchases (sales) were $95 million and $(30) million as of October 28, 2017 and July 29, 2017 , respectively.
Gross Realized Gains And Gross Realized Losses Related To Available-For-Sale Investment	The following table presents the gross realized gains and gross realized losses related to available-for-sale investments (in millions): Three Months Ended October 28, 2017 October 29, 2016 Gross realized gains $ 67 $ 30 Gross realized losses (34 ) (15 ) Total $ 33 $ 15 The following table presents the realized net gains (losses) related to available-for-sale investments by security type (in millions): Three Months Ended October 28, 2017 October 29, 2016 Net gains (losses) on investments in publicly traded equity securities $ 29 $ 5 Net gains (losses) on investments in fixed income securities 4 10 Total $ 33 $ 15
Available-For-Sale Investments With Gross Unrealized Losses	The following tables present the breakdown of the available-for-sale investments with gross unrealized losses and the duration that those losses had been unrealized at October 28, 2017 and July 29, 2017 (in millions): UNREALIZED LOSSES LESS THAN 12 MONTHS UNREALIZED LOSSES 12 MONTHS OR GREATER TOTAL October 28, 2017 Fair Value Gross Unrealized Losses Fair Value Gross Unrealized Losses Fair Value Gross Unrealized Losses Fixed income securities: U.S. government securities $ 16,719 $ (66 ) $ 3,602 $ (27 ) $ 20,321 $ (93 ) U.S. government agency securities 1,696 (4 ) 222 (2 ) 1,918 (6 ) Non-U.S. government and agency securities 316 (1 ) 41 — 357 (1 ) Corporate debt securities 8,129 (45 ) 4,209 (86 ) 12,338 (131 ) U.S. agency mortgage-backed securities 1,562 (16 ) 266 (7 ) 1,828 (23 ) Total fixed income securities 28,422 (132 ) 8,340 (122 ) 36,762 (254 ) Publicly traded equity securities 54 (6 ) — — 54 (6 ) Total $ 28,476 $ (138 ) $ 8,340 $ (122 ) $ 36,816 $ (260 ) UNREALIZED LOSSES LESS THAN 12 MONTHS UNREALIZED LOSSES 12 MONTHS OR GREATER TOTAL July 29, 2017 Fair Value Gross Unrealized Losses Fair Value Gross Unrealized Losses Fair Value Gross Unrealized Losses Fixed income securities: U.S. government securities $ 14,962 $ (55 ) $ 771 $ (5 ) $ 15,733 $ (60 ) U.S. government agency securities 1,791 (4 ) 130 (1 ) 1,921 (5 ) Non-U.S. government and agency securities 368 (1 ) — — 368 (1 ) Corporate debt securities 9,487 (92 ) 101 (1 ) 9,588 (93 ) U.S. agency mortgage-backed securities 1,485 (16 ) 38 (1 ) 1,523 (17 ) Total fixed income securities 28,093 (168 ) 1,040 (8 ) 29,133 (176 ) Publicly traded equity securities 122 (27 ) — — 122 (27 ) Total $ 28,215 $ (195 ) $ 1,040 $ (8 ) $ 29,255 $ (203 )
Maturities of Fixed Income Securities	The following table summarizes the maturities of the Company’s fixed income securities as of October 28, 2017 (in millions): Amortized Cost Fair Value Less than 1 year $ 16,376 $ 16,360 Due in 1 to 2 years 14,866 14,820 Due in 2 to 5 years 21,852 21,883 Due after 5 years 3,665 3,627 Mortgage-backed securities with no single maturity 2,095 2,074 Total $ 58,854 $ 58,764
Equity Method and Cost Method Investments	For such investments that were accounted for under the equity and cost method as of October 28, 2017 and July 29, 2017 , the amounts are summarized in the following table (in millions): October 28, 2017 July 29, 2017 Equity method investments $ 108 $ 124 Cost method investments 839 859 Total $ 947 $ 983

Fair Value (Tables)

Fair Value (Tables)	3 Months Ended
	Oct. 28, 2017
Fair Value Disclosures [Abstract]
Schedule of Fair Value, Assets and Liabilities Measured on Recurring Basis	Assets and liabilities measured at fair value on a recurring basis as of October 28, 2017 and July 29, 2017 were as follows (in millions): OCTOBER 28, 2017 JULY 29, 2017 Level 1 Level 2 Level 3 Total Balance Level 1 Level 2 Level 3 Total Balance Assets: Cash equivalents: Money market funds $ 9,103 $ — $ — $ 9,103 $ 9,567 $ — $ — $ 9,567 U.S. government securities — — — — — 139 — 139 Commercial paper — 115 — 115 — 160 — 160 Certificates of deposit — — — — — 25 — 25 Available-for-sale investments: U.S. government securities — 20,471 — 20,471 — 19,823 — 19,823 U.S. government agency securities — 1,917 — 1,917 — 2,052 — 2,052 Non-U.S. government and agency securities — 357 — 357 — 388 — 388 Corporate debt securities — 32,030 — 32,030 — 31,735 — 31,735 U.S. agency mortgage-backed securities — 2,074 — 2,074 — 2,023 — 2,023 Commercial paper — 1,775 — 1,775 — 996 — 996 Certificates of deposit — 140 — 140 — 60 — 60 Publicly traded equity securities 1,781 — — 1,781 1,707 — — 1,707 Derivative assets — 99 — 99 — 149 — 149 Total $ 10,884 $ 58,978 $ — $ 69,862 $ 11,274 $ 57,550 $ — $ 68,824 Liabilities: Derivative liabilities $ — $ 18 $ — $ 18 $ — $ 4 $ — $ 4 Total $ — $ 18 $ — $ 18 $ — $ 4 $ — $ 4
Fair Value Measurements, Nonrecurring	The following table presents the Company’s assets that were measured at fair value on a nonrecurring basis during the indicated periods and the related recognized gains and losses for the periods indicated (in millions): TOTAL GAINS (LOSSES) FOR THE THREE MONTHS ENDED October 28, 2017 October 29, 2016 Investments in privately held companies (impaired) $ (21 ) $ (47 ) Purchased intangible assets (impaired) — (42 ) Total gains (losses) for nonrecurring measurements $ (21 ) $ (89 )

Borrowings (Tables)

Borrowings (Tables)	3 Months Ended
	Oct. 28, 2017
Debt Disclosure [Abstract]
Schedule Of Short-Term Debt	The following table summarizes the Company’s short-term debt (in millions, except percentages): October 28, 2017 July 29, 2017 Amount Effective Rate Amount Effective Rate Current portion of long-term debt $ 4,748 1.70 % $ 4,747 1.66 % Commercial paper 5,491 1.25 % 3,245 1.16 % Total short-term debt $ 10,239 $ 7,992
Schedule Of Long-Term Debt	The following table summarizes the Company’s long-term debt (in millions, except percentages): October 28, 2017 July 29, 2017 Maturity Date Amount Effective Rate Amount Effective Rate Senior notes: Floating-rate notes: Three-month LIBOR plus 0.60% February 21, 2018 $ 1,000 1.98% $ 1,000 1.84% Three-month LIBOR plus 0.31% June 15, 2018 900 1.70% 900 1.62% Three-month LIBOR plus 0.50% March 1, 2019 500 1.88% 500 1.76% Three-month LIBOR plus 0.34% September 20, 2019 500 1.71% 500 1.66% Fixed-rate notes: 1.40% February 28, 2018 1,250 1.47% 1,250 1.47% 1.65% June 15, 2018 1,600 1.72% 1,600 1.72% 4.95% February 15, 2019 2,000 4.96% 2,000 4.96% 1.60% February 28, 2019 1,000 1.67% 1,000 1.67% 2.125% March 1, 2019 1,750 1.85% 1,750 1.84% 1.40% September 20, 2019 1,500 1.48% 1,500 1.48% 4.45% January 15, 2020 2,500 3.85% 2,500 3.84% 2.45% June 15, 2020 1,500 2.54% 1,500 2.54% 2.20% February 28, 2021 2,500 2.30% 2,500 2.30% 2.90% March 4, 2021 500 2.01% 500 2.00% 1.85% September 20, 2021 2,000 1.90% 2,000 1.90% 3.00% June 15, 2022 500 2.28% 500 2.26% 2.60% February 28, 2023 500 2.68% 500 2.68% 2.20% September 20, 2023 750 2.27% 750 2.27% 3.625% March 4, 2024 1,000 2.13% 1,000 2.12% 3.50% June 15, 2025 500 2.44% 500 2.43% 2.95% February 28, 2026 750 3.01% 750 3.01% 2.50% September 20, 2026 1,500 2.55% 1,500 2.55% 5.90% February 15, 2039 2,000 6.11% 2,000 6.11% 5.50% January 15, 2040 2,000 5.67% 2,000 5.67% Total 30,500 30,500 Unaccreted discount/issuance costs (130 ) (136 ) Hedge accounting fair value adjustments 62 108 Total $ 30,432 $ 30,472 Reported as: Current portion of long-term debt $ 4,748 $ 4,747 Long-term debt 25,684 25,725 Total $ 30,432 $ 30,472
Schedule Of Principal Payments For Long-Term Debt	As of October 28, 2017 , future principal payments for long-term debt, including the current portion, are summarized as follows (in millions): Fiscal Year Amount 2018 (remaining nine months) $ 4,750 2019 5,250 2020 6,000 2021 3,000 2022 2,500 Thereafter 9,000 Total $ 30,500

Derivative Instruments (Tables)

Derivative Instruments (Tables)	3 Months Ended
	Oct. 28, 2017
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Derivatives Recorded At Fair Value	The fair values of the Company’s derivative instruments and the line items on the Consolidated Balance Sheets to which they were recorded are summarized as follows (in millions): DERIVATIVE ASSETS DERIVATIVE LIABILITIES Balance Sheet Line Item October 28, July 29, Balance Sheet Line Item October 28, July 29, Derivatives designated as hedging instruments: Foreign currency derivatives Other current assets $ 40 $ 46 Other current liabilities $ — $ 1 Equity derivatives Other current assets — — Other current liabilities 14 — Interest rate derivatives Other assets 58 102 Other long-term liabilities 2 — Total 98 148 16 1 Derivatives not designated as hedging instruments: Foreign currency derivatives Other current assets 1 1 Other current liabilities 2 3 Equity derivatives/warrants Other assets — — Other long-term liabilities — — Total 1 1 2 3 Total $ 99 $ 149 $ 18 $ 4
Gains And Losses On Derivatives Designated As Cash Flow Hedges	The effects of the Company’s cash flow and net investment hedging instruments on other comprehensive income (OCI) and the Consolidated Statements of Operations are summarized as follows (in millions): GAINS (LOSSES) RECOGNIZED IN OCI ON DERIVATIVES FOR THE THREE MONTHS ENDED (EFFECTIVE PORTION) GAINS (LOSSES) RECLASSIFIED FROM AOCI INTO INCOME FOR THE THREE MONTHS ENDED (EFFECTIVE PORTION) October 28, October 29, Line Item in Statements of Operations October 28, October 29, Derivatives designated as cash flow hedging instruments: Foreign currency derivatives $ 8 $ (46 ) Operating expenses $ 10 $ (9 ) Cost of sales — service 3 (3 ) Total $ 8 $ (46 ) $ 13 $ (12 ) Derivatives designated as net investment hedging instruments: Foreign currency derivatives $ (5 ) $ 9 Other income (loss), net $ — $ —
Schedule Of Derivative Fair Value Hedge Instruments Gain Loss In Statement Of Financial Performance	The effect on the Consolidated Statements of Operations of derivative instruments designated as fair value hedges and the underlying hedged items is summarized as follows (in millions): GAINS (LOSSES) ON DERIVATIVE INSTRUMENTS FOR THE THREE MONTHS ENDED GAINS (LOSSES) RELATED TO HEDGED ITEMS FOR THE THREE MONTHS ENDED Derivatives Designated as Fair Value Hedging Instruments Line Item in Statements of Operations October 28, October 29, October 28, October 29, Interest rate derivatives Interest expense $ (46 ) $ (91 ) $ 46 $ 90 Equity derivatives Other income (loss), net (14 ) — 14 — Total $ (60 ) $ (91 ) $ 60 $ 90
Effect Of Derivative Instruments Not Designated As Fair Value Hedges On Consolidated Statement Of Operations Summary	The effect on the Consolidated Statements of Operations of derivative instruments not designated as hedges is summarized as follows (in millions): GAINS (LOSSES) FOR THE THREE MONTHS ENDED Derivatives Not Designated as Hedging Instruments Line Item in Statements of Operations October 28, October 29, Foreign currency derivatives Other income (loss), net $ 7 $ (16 ) Total return swaps—deferred compensation Operating expenses 16 (3 ) Equity derivatives Other income (loss), net 1 1 Total $ 24 $ (18 )
Schedule Of Notional Amounts Of Derivatives Outstanding	The notional amounts of the Company’s outstanding derivatives are summarized as follows (in millions): October 28, July 29, Derivatives designated as hedging instruments: Foreign currency derivatives—cash flow hedges $ 1,219 $ 1,696 Interest rate derivatives 6,750 6,750 Net investment hedging instruments 266 351 Equity derivatives 302 — Derivatives not designated as hedging instruments: Foreign currency derivatives 1,918 2,258 Total return swaps—deferred compensation 564 535 Total $ 11,019 $ 11,590
Offsetting Assets and Liabilities	Information related to these offsetting arrangements is summarized as follows (in millions): October 28, 2017 GROSS AMOUNTS OFFSET IN THE CONSOLIDATED BALANCE SHEETS GROSS AMOUNTS NOT OFFSET IN THE CONSOLIDATED BALANCE SHEETS Gross Amounts Recognized Gross Amounts Offset Net Amounts Presented Gross Derivative Amounts Cash Collateral Net Amount Derivatives assets $ 99 $ — $ 99 $ (14 ) $ (57 ) $ 28 Derivatives liabilities $ 18 $ — $ 18 $ (14 ) $ — $ 4 July 29, 2017 GROSS AMOUNTS OFFSET IN THE CONSOLIDATED BALANCE SHEETS GROSS AMOUNTS NOT OFFSET IN THE CONSOLIDATED BALANCE SHEETS Gross Amounts Recognized Gross Amounts Offset Net Amounts Presented Gross Derivative Amounts Cash Collateral Net Amount Derivatives assets $ 149 $ — $ 149 $ (4 ) $ (81 ) $ 64 Derivatives liabilities $ 4 $ — $ 4 $ (4 ) $ — $ —

Commitments and Contingencies (

Commitments and Contingencies (Tables)	3 Months Ended
	Oct. 28, 2017
Commitments and Contingencies Disclosure [Abstract]
Schedule Of Future Annual Minimum Lease Payments Under All Noncancelable Operating Leases	Future minimum lease payments under all noncancelable operating leases with an initial term in excess of one year as of October 28, 2017 are as follows (in millions): Fiscal Year Amount 2018 (remaining nine months) $ 316 2019 292 2020 203 2021 120 2022 99 Thereafter 147 Total $ 1,177
Compensation expenses related to business combinations	The following table summarizes the compensation expense related to acquisitions (in millions): Three Months Ended October 28, 2017 October 29, 2016 Compensation expense related to acquisitions $ 42 $ 64
Schedule Of Product Warranty Liability	The following table summarizes the activity related to the product warranty liability (in millions): Three Months Ended October 28, October 29, Balance at beginning of period $ 407 $ 414 Provisions for warranty issued 148 176 Adjustments for pre-existing warranties (12 ) — Settlements (149 ) (177 ) Balance at end of period $ 394 $ 413
Schedule of Guarantor Obligations	The aggregate amounts of financing guarantees outstanding at October 28, 2017 and July 29, 2017 , representing the total maximum potential future payments under financing arrangements with third parties along with the related deferred revenue, are summarized in the following table (in millions): October 28, July 29, Maximum potential future payments relating to financing guarantees: Channel partner $ 266 $ 240 End user 65 74 Total $ 331 $ 314 Deferred revenue associated with financing guarantees: Channel partner $ (79 ) $ (82 ) End user (46 ) (52 ) Total $ (125 ) $ (134 ) Maximum potential future payments relating to financing guarantees, net of associated deferred revenue $ 206 $ 180

Shareholders' Equity (Tables)

Shareholders' Equity (Tables)	3 Months Ended
	Oct. 28, 2017
Stockholders' Equity Note [Abstract]
Stock Repurchase Program	A summary of the stock repurchase activity under the stock repurchase program, reported based on the trade date, is summarized as follows (in millions, except per-share amounts): Shares Repurchased Weighted- Average Price per Share Amount Repurchased Cumulative balance at July 29, 2017 4,709 $ 21.30 $ 100,303 Repurchase of common stock under the stock repurchase program (1) 51 31.80 1,620 Cumulative balance at October 28, 2017 4,760 $ 21.41 $ 101,923 (1) There were no stock repurchases pending settlement as of October 28, 2017 . There were $66 million of stock repurchases that were pending settlement as of July 29, 2017 .

Employee Benefit Plans (Tables)

Employee Benefit Plans (Tables)	3 Months Ended
	Oct. 28, 2017
Retirement Benefits [Abstract]
Summary Of Share-Based Compensation Expense	Share-based compensation expense consists primarily of expenses for stock options, stock purchase rights, restricted stock, and RSUs granted to employees. The following table summarizes share-based compensation expense (in millions): Three Months Ended October 28, 2017 October 29, 2016 Cost of sales—product $ 23 $ 21 Cost of sales—service 34 33 Share-based compensation expense in cost of sales 57 54 Research and development 136 126 Sales and marketing 135 140 General and administrative 64 49 Restructuring and other charges 6 3 Share-based compensation expense in operating expenses 341 318 Total share-based compensation expense $ 398 $ 372 Income tax benefit for share-based compensation $ 175 $ 105
Summary Of Share-Based Awards Available For Grant	A summary of share-based awards available for grant is as follows (in millions): Share-Based Awards Available for Grant BALANCE AT JULY 30, 2016 242 Restricted stock, stock units, and other share-based awards granted (76 ) Share-based awards canceled/forfeited/expired 78 Shares withheld for taxes and not issued 28 BALANCE AT JULY 29, 2017 272 Restricted stock, stock units, and other share-based awards granted (16 ) Share-based awards canceled/forfeited/expired 5 Shares withheld for taxes and not issued 15 BALANCE AT OCTOBER 28, 2017 276
Summary Of Restricted Stock And Stock Unit Activity	A summary of the restricted stock and stock unit activity, which includes time-based and performance-based or market-based RSUs, is as follows (in millions, except per-share amounts): Restricted Stock/ Stock Units Weighted-Average Grant Date Fair Value per Share Aggregate Fair Value UNVESTED BALANCE AT JULY 30, 2016 145 $ 24.26 Granted 50 27.89 Assumed from acquisitions 15 32.21 Vested (54 ) 23.14 $ 1,701 Canceled/forfeited (15 ) 23.56 UNVESTED BALANCE AT JULY 29, 2017 141 26.94 Granted 10 30.19 Assumed from acquisitions 1 28.70 Vested (29 ) 24.52 $ 927 Canceled/forfeited (6 ) 28.73 UNVESTED BALANCE AT OCTOBER 28, 2017 117 $ 27.75
Summary Of Stock Option Activity	A summary of the stock option activity is as follows (in millions, except per-share amounts): STOCK OPTIONS OUTSTANDING Number Outstanding Weighted-Average Exercise Price per Share BALANCE AT JULY 30, 2016 73 $ 26.78 Assumed from acquisitions 8 4.47 Exercised (14 ) 12.11 Canceled/forfeited/expired (55 ) 31.83 BALANCE AT JULY 29, 2017 12 6.15 Assumed from acquisitions 3 8.07 Exercised (2 ) 5.19 BALANCE AT OCTOBER 28, 2017 13 $ 6.68
Summary Of Significant Ranges Of Outstanding And Exercisable Stock Options	The following table summarizes significant ranges of outstanding and exercisable stock options as of October 28, 2017 (in millions, except years and share prices): STOCK OPTIONS OUTSTANDING STOCK OPTIONS EXERCISABLE Range of Exercise Prices Number Outstanding Weighted- Average Remaining Contractual Life (in Years) Weighted- Average Exercise Price per Share Aggregate Intrinsic Value Number Exercisable Weighted- Average Exercise Price per Share Aggregate Intrinsic Value $ 0.01 – 30.00 13 6.6 $ 6.68 $ 371 7 $ 5.90 $ 193
Schedule of Assumptions Used	The assumptions for the valuation of time-based RSUs and PRSUs are summarized as follows: RESTRICTED STOCK UNITS PERFORMANCE BASED RESTRICTED STOCK UNITS Three Months Ended October 28, 2017 October 29, 2016 October 28, 2017 October 29, 2016 Number of shares granted (in millions) 7 7 3 3 Grant date fair value per share $ 29.81 $ 28.55 $ 31.31 $ 29.62 Weighted-average assumptions/inputs: Expected dividend yield 3.6 % 3.3 % 3.6 % 3.3 % Range of risk-free interest rates 1.0% – 1.9% 0.0% – 1.2% 1.0% – 1.6% 0.1% – 0.9% Range of expected volatilities for index N/A N/A 13.2% – 81.0% 16.7% – 46.8%

Comprehensive Income (Tables)

Comprehensive Income (Tables)	3 Months Ended
	Oct. 28, 2017
Comprehensive Income [Abstract]
Components Of AOCI, Net Of Tax	The components of AOCI, net of tax, and the other comprehensive income (loss), excluding noncontrolling interest, for the three months ended October 28, 2017 and October 29, 2016 are summarized as follows (in millions): Net Unrealized Gains (Losses) on Available-for-Sale Investments Net Unrealized Gains (Losses) Cash Flow Hedging Instruments Cumulative Translation Adjustment and Actuarial Gains (Losses) Accumulated Other Comprehensive Income (Loss) BALANCE AT JULY 29, 2017 $ 373 $ 32 $ (359 ) $ 46 Other comprehensive income (loss) before reclassifications attributable to Cisco Systems, Inc. 18 8 18 44 (Gains) losses reclassified out of AOCI (33 ) (13 ) 1 (45 ) Tax benefit (expense) (13 ) 1 (2 ) (14 ) BALANCE AT OCTOBER 28, 2017 $ 345 $ 28 $ (342 ) $ 31 Net Unrealized Gains (Losses) on Available-for-Sale Investments Net Unrealized Gains (Losses) Cash Flow Hedging Instruments Cumulative Translation Adjustment and Actuarial Gains (Losses) Accumulated Other Comprehensive Income (Loss) BALANCE AT JULY 30, 2016 $ 413 $ (59 ) $ (680 ) $ (326 ) Other comprehensive income (loss) before reclassifications attributable to Cisco Systems, Inc. (210 ) (46 ) (26 ) (282 ) (Gains) losses reclassified out of AOCI (15 ) 12 — (3 ) Tax benefit (expense) 86 2 (1 ) 87 BALANCE AT OCTOBER 29, 2016 $ 274 $ (91 ) $ (707 ) $ (524 )
Reclassification out of Accumulated Other Comprehensive Income	The net gains (losses) reclassified out of AOCI into the Consolidated Statements of Operations, with line item location, during each period were as follows (in millions): Three Months Ended October 28, October 29, Comprehensive Income Components Income Before Taxes Line Item in Statements of Operations Net unrealized gains and losses on available-for-sale investments $ 33 $ 15 Other income (loss), net Net unrealized gains and losses on cash flow hedging instruments Foreign currency derivatives 10 (9 ) Operating expenses Foreign currency derivatives 3 (3 ) Cost of sales—service 13 (12 ) Cumulative translation adjustment and actuarial gains and losses (1 ) — Operating expenses Total amounts reclassified out of AOCI $ 45 $ 3

Income Taxes (Tables)

Income Taxes (Tables)	3 Months Ended
	Oct. 28, 2017
Income Tax Disclosure [Abstract]
Income Tax Provision	The following table provides details of income taxes (in millions, except percentages): Three Months Ended October 28, October 29, Income before provision for income taxes $ 2,962 $ 2,953 Provision for income taxes $ 568 $ 631 Effective tax rate 19.2 % 21.4 %

Segment Information and Major46

Segment Information and Major Customers (Tables)	3 Months Ended
	Oct. 28, 2017
Segment Reporting [Abstract]
Reportable Segments	Summarized financial information by segment for the three months ended October 28, 2017 and October 29, 2016 , based on the Company’s internal management system and as utilized by the Company’s Chief Operating Decision Maker ("CODM"), is as follows (in millions): Three Months Ended October 28, October 29, Revenue: Americas $ 7,350 $ 7,443 EMEA 2,909 3,013 APJC 1,877 1,896 Total $ 12,136 $ 12,352 Gross margin: Americas $ 4,722 $ 4,833 EMEA 1,839 2,013 APJC 1,165 1,204 Segment total 7,726 8,050 Unallocated corporate items (299 ) (166 ) Total $ 7,427 $ 7,884
Net Sales For Groups Of Similar Products And Services	The following table presents revenue for groups of similar products and services (in millions): Three Months Ended October 28, October 29, Revenue: Infrastructure Platforms $ 6,970 $ 7,273 Applications 1,203 1,136 Security 585 540 Other Products 296 353 Total Product 9,054 9,302 Services 3,082 3,050 Total $ 12,136 $ 12,352
Property And Equipment, Net	The following table presents property and equipment information for geographic areas (in millions): October 28, July 29, Property and equipment, net: United States $ 2,624 $ 2,711 International 578 611 Total $ 3,202 $ 3,322

Net Income per Share (Tables)

Net Income per Share (Tables)	3 Months Ended
	Oct. 28, 2017
Earnings Per Share [Abstract]
Calculation Of Basic And Diluted Net Income Per Share	The following table presents the calculation of basic and diluted net income per share (in millions, except per-share amounts): Three Months Ended October 28, October 29, Net income $ 2,394 $ 2,322 Weighted-average shares—basic 4,959 5,027 Effect of dilutive potential common shares 35 39 Weighted-average shares—diluted 4,994 5,066 Net income per share—basic $ 0.48 $ 0.46 Net income per share—diluted $ 0.48 $ 0.46 Antidilutive employee share-based awards, excluded 15 67

Supplemental Information (Stock

Supplemental Information (Stock Repurchases Since Inception of Program) (Details) - USD ($)	Oct. 28, 2017	Jul. 29, 2017
Supplementary Information [Line Items]
Authorized common stock repurchase amount	$ 112,000,000,000
Repurchases of common stock under the repurchase program (in shares)	4,760,000,000	4,709,000,000
Repurchases of common stock under the repurchase program	$ 101,923,000,000	$ 100,303,000,000
Shares of Common Stock
Supplementary Information [Line Items]
Repurchases of common stock under the repurchase program (in shares)	4,760,000,000
Common Stock and Additional Paid-In Capital
Supplementary Information [Line Items]
Repurchases of common stock under the repurchase program	$ 25,407,000,000
Retained Earnings
Supplementary Information [Line Items]
Repurchases of common stock under the repurchase program	76,516,000,000
Total Cisco Shareholders’ Equity
Supplementary Information [Line Items]
Repurchases of common stock under the repurchase program	$ 101,923,000,000

Basis of Presentation (Details)

Basis of Presentation (Details)	3 Months Ended
	Oct. 28, 2017segment
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Number of geographic segments (segment)	3

Acquisitions and Divestitures50

Acquisitions and Divestitures (Additional Information) (Details) $ / shares in Units, $ in Millions	Oct. 23, 2017USD ($)$ / shares	Oct. 28, 2017USD ($)acquisition	Oct. 29, 2016USD ($)
Supplementary Information [Line Items]
Number of business combinations (acquisition) | acquisition		3
Acquired cash and cash equivalents		$ 11
Gains recognized from acquisitions		46
Purchase Consideration		761
BroadSoft, Inc
Supplementary Information [Line Items]
Share price for each share acquired (in dollars per share) | $ / shares	$ 55
Purchase Consideration	$ 1,900
General and administrative
Supplementary Information [Line Items]
Acquisition related costs		$ 9	$ 1

Acquisitions and Divestitures51

Acquisitions and Divestitures (Summary Of Allocation Of Total Purchase Consideration) (Details) $ in Millions	3 Months Ended
	Oct. 28, 2017USD ($)
Business Acquisition [Line Items]
Purchase Consideration	$ 761
Net Tangible Assets Acquired (Liabilities Assumed)	(28)
Purchased Intangible Assets	346
Goodwill	443
Viptela
Business Acquisition [Line Items]
Purchase Consideration	497
Net Tangible Assets Acquired (Liabilities Assumed)	(18)
Purchased Intangible Assets	180
Goodwill	335
Springpath
Business Acquisition [Line Items]
Purchase Consideration	248
Net Tangible Assets Acquired (Liabilities Assumed)	(11)
Purchased Intangible Assets	160
Goodwill	99
Other
Business Acquisition [Line Items]
Purchase Consideration	16
Net Tangible Assets Acquired (Liabilities Assumed)	1
Purchased Intangible Assets	6
Goodwill	$ 9

Goodwill and Purchased Intang52

Goodwill and Purchased Intangible Assets (Schedule Of Goodwill By Reportable Segments) (Details) $ in Millions	3 Months Ended
	Oct. 28, 2017USD ($)
Goodwill [Roll Forward]
Beginning Balance	$ 29,766
Acquisitions	443
Other	24
Ending Balance	30,233
Americas
Goodwill [Roll Forward]
Beginning Balance	18,691
Acquisitions	323
Other	15
Ending Balance	19,029
EMEA
Goodwill [Roll Forward]
Beginning Balance	7,057
Acquisitions	92
Other	6
Ending Balance	7,155
APJC
Goodwill [Roll Forward]
Beginning Balance	4,018
Acquisitions	28
Other	3
Ending Balance	$ 4,049

Goodwill and Purchased Intang53

Goodwill and Purchased Intangible Assets (Schedule Of Intangible Assets Acquired Through Business Combinations) (Details) $ in Millions	3 Months Ended
	Oct. 28, 2017USD ($)
Intangible Assets Acquired Through Business Combinations
Total, Amount	$ 346
Viptela
Intangible Assets Acquired Through Business Combinations
Total, Amount	180
Springpath
Intangible Assets Acquired Through Business Combinations
Total, Amount	160
Other
Intangible Assets Acquired Through Business Combinations
Total, Amount	6
IPR&D
Intangible Assets Acquired Through Business Combinations
Indefinite Lives, Amount	3
IPR&D | Viptela
Intangible Assets Acquired Through Business Combinations
Indefinite Lives, Amount	0
IPR&D | Springpath
Intangible Assets Acquired Through Business Combinations
Indefinite Lives, Amount	3
IPR&D | Other
Intangible Assets Acquired Through Business Combinations
Indefinite Lives, Amount	0
TECHNOLOGY
Intangible Assets Acquired Through Business Combinations
Finite Lives, Amount	$ 304
TECHNOLOGY | Viptela
Intangible Assets Acquired Through Business Combinations
Weighted- Average Useful Life (in Years)	5 years
Finite Lives, Amount	$ 144
TECHNOLOGY | Springpath
Intangible Assets Acquired Through Business Combinations
Weighted- Average Useful Life (in Years)	4 years
Finite Lives, Amount	$ 157
TECHNOLOGY | Other
Intangible Assets Acquired Through Business Combinations
Weighted- Average Useful Life (in Years)	5 years
Finite Lives, Amount	$ 3
CUSTOMER RELATIONSHIPS
Intangible Assets Acquired Through Business Combinations
Finite Lives, Amount	$ 38
CUSTOMER RELATIONSHIPS | Viptela
Intangible Assets Acquired Through Business Combinations
Weighted- Average Useful Life (in Years)	6 years
Finite Lives, Amount	$ 35
CUSTOMER RELATIONSHIPS | Springpath
Intangible Assets Acquired Through Business Combinations
Weighted- Average Useful Life (in Years)	0 years
Finite Lives, Amount	$ 0
CUSTOMER RELATIONSHIPS | Other
Intangible Assets Acquired Through Business Combinations
Weighted- Average Useful Life (in Years)	4 years
Finite Lives, Amount	$ 3
OTHER
Intangible Assets Acquired Through Business Combinations
Finite Lives, Amount	$ 1
OTHER | Viptela
Intangible Assets Acquired Through Business Combinations
Weighted- Average Useful Life (in Years)	1 year
Finite Lives, Amount	$ 1
OTHER | Springpath
Intangible Assets Acquired Through Business Combinations
Weighted- Average Useful Life (in Years)	0 years
Finite Lives, Amount	$ 0
OTHER | Other
Intangible Assets Acquired Through Business Combinations
Weighted- Average Useful Life (in Years)	0 years
Finite Lives, Amount	$ 0

Goodwill and Purchased Intang54

Goodwill and Purchased Intangible Assets (Schedule Of Purchased Intangible Assets With Finite And Indefinite Lives) (Details) - USD ($) $ in Millions	Oct. 28, 2017	Jul. 29, 2017
Business Acquisition [Line Items]
Gross	$ 4,938	$ 4,617
Accumulated Amortization	(2,376)	(2,189)
Total purchased intangible assets with finite lives, net	2,562	2,428
In-process research and development, with indefinite lives	115	111
Total finite and indefinite lives intangible assets, Gross	5,053	4,728
Total finite and indefinite lives intangible assets, net	2,677	2,539
TECHNOLOGY
Business Acquisition [Line Items]
Gross	3,465	3,182
Accumulated Amortization	(1,514)	(1,386)
Total purchased intangible assets with finite lives, net	1,951	1,796
CUSTOMER RELATIONSHIPS
Business Acquisition [Line Items]
Gross	1,391	1,353
Accumulated Amortization	(818)	(765)
Total purchased intangible assets with finite lives, net	573	588
OTHER
Business Acquisition [Line Items]
Gross	82	82
Accumulated Amortization	(44)	(38)
Total purchased intangible assets with finite lives, net	$ 38	$ 44

Goodwill and Purchased Intang55

Goodwill and Purchased Intangible Assets (Additional Information) (Details) - USD ($)	3 Months Ended
	Oct. 28, 2017	Oct. 29, 2016
Acquired Finite-Lived Intangible Assets [Line Items]
Purchased intangible assets impairment	$ 0	$ 42,000,000
Impairment charges	61,000,000	78,000,000
Restructuring and other charges
Acquired Finite-Lived Intangible Assets [Line Items]
Impairment charges	$ 0	$ 38,000,000

Goodwill and Purchased Intang56

Goodwill and Purchased Intangible Assets (Schedule Of Amortization Of Purchased Intangible Assets) (Details) - USD ($) $ in Millions	3 Months Ended
	Oct. 28, 2017	Oct. 29, 2016
Acquired Finite-Lived Intangible Assets [Line Items]
Amortization of purchased intangible assets	$ 61	$ 78
Cost of sales
Acquired Finite-Lived Intangible Assets [Line Items]
Amortization of purchased intangible assets	154	129
Amortization of purchased intangible assets
Acquired Finite-Lived Intangible Assets [Line Items]
Amortization of purchased intangible assets	61	78
Restructuring and other charges
Acquired Finite-Lived Intangible Assets [Line Items]
Amortization of purchased intangible assets	0	38
Total
Acquired Finite-Lived Intangible Assets [Line Items]
Amortization of purchased intangible assets	$ 215	$ 245

Goodwill and Purchased Intang57

Goodwill and Purchased Intangible Assets (Schedule Of Estimated Future Amortization Expense Of Purchased Intangible Assets) (Details) - USD ($) $ in Millions	Oct. 28, 2017	Jul. 29, 2017
Finite-Lived Intangible Assets, Future Amortization Expense [Abstract]
2018 (remaining nine months)	$ 647
2,019	776
2,020	559
2,021	362
2,022	145
Thereafter	73
Total purchased intangible assets with finite lives, net	$ 2,562	$ 2,428

Restructuring and Other Charg58

Restructuring and Other Charges (Additional Information) (Details) - USD ($) $ in Millions	3 Months Ended
	Oct. 28, 2017	Oct. 29, 2016
Restructuring Cost and Reserve [Line Items]
Restructuring charges	$ 152	$ 411
Fiscal 2017 Plan
Restructuring Cost and Reserve [Line Items]
Expected restructuring charges	150
Restructuring charges	908
Fiscal 2017 Plan | Employee Severance
Restructuring Cost and Reserve [Line Items]
Expected restructuring charges	$ 1,000

Restructuring and Other Charg59

Restructuring and Other Charges (Schedule Of Activities Related To Restructuring And Other Charges) (Details) - USD ($) $ in Millions	3 Months Ended
	Oct. 28, 2017	Oct. 29, 2016
Restructuring Reserve [Roll Forward]
Liability as of beginning period	$ 117	$ 45
Charges	152	411
Cash payments	(95)	(270)
Non-cash items	(6)	(47)
Liability as of ending period	168	139
FISCAL 2017 AND PRIOR PLANS | Employee Severance
Restructuring Reserve [Roll Forward]
Liability as of beginning period	74	21
Charges	145	369
Cash payments	(79)	(269)
Non-cash items	0	(4)
Liability as of ending period	140	117
FISCAL 2017 AND PRIOR PLANS | Other
Restructuring Reserve [Roll Forward]
Liability as of beginning period	43	24
Charges	7	42
Cash payments	(16)	(1)
Non-cash items	(6)	(43)
Liability as of ending period	$ 28	$ 22

Balance Sheet Details (Details)

Balance Sheet Details (Details) - USD ($) $ in Millions	Oct. 28, 2017	Jul. 29, 2017
Inventories:
Raw materials	$ 358	$ 289
Work in Process	1	1
Finished goods:
Distributor inventory and deferred cost of sales	457	451
Manufactured finished goods	550	552
Total finished goods	1,007	1,003
Service-related spares	303	300
Demonstration systems	24	23
Total	1,693	1,616
Gross property and equipment:
Land, buildings, and building and leasehold improvements	4,854	4,926
Computer equipment and related software	1,251	1,258
Production, engineering, and other equipment	5,681	5,707
Operating lease assets	352	356
Furniture and fixtures	393	572
Total gross property and equipment	12,531	12,819
Less: accumulated depreciation and amortization	(9,329)	(9,497)
Total	3,202	3,322
Deferred Revenue Arrangement [Line Items]
Deferred revenue:	18,565	18,494
Current	10,920	10,821
Noncurrent	7,645	7,673
Product:
Deferred Revenue Arrangement [Line Items]
Deferred revenue:	7,574	7,192
Service
Deferred Revenue Arrangement [Line Items]
Deferred revenue:	10,991	11,302
Deferred revenue related to recurring software and subscription offers | Product:
Deferred Revenue Arrangement [Line Items]
Deferred revenue:	5,213	4,971
Other product deferred revenue | Product:
Deferred Revenue Arrangement [Line Items]
Deferred revenue:	$ 2,361	$ 2,221

Financing Receivables and Ope61

Financing Receivables and Operating Leases (Additional Information) (Details) $ in Millions	3 Months Ended
	Oct. 28, 2017USD ($)rating	Jul. 29, 2017USD ($)
Financing Receivables And Guarantees [Line Items]
Average lease term	4 years
Threshold for past due receivables	31 days
Unbilled or current financing receivables included in greater than 91 days plus past due | $	$ 595	$ 666
Financing receivable, 91 days past due and still accruing | $	$ 215	$ 315
Investment credit risk ratings range lowest	1
Rating at or higher when receivables deemed impaired	10
Rating at or higher when receivables deemed impaired	8
Maximum
Financing Receivables And Guarantees [Line Items]
Loan receivables term	3 years
Maximum | Financed Service Contracts
Financing Receivables And Guarantees [Line Items]
Financed service contracts term	3 years
Minimum | Financed Service Contracts
Financing Receivables And Guarantees [Line Items]
Financed service contracts term	1 year

Financing Receivables and Ope62

Financing Receivables and Operating Leases (Schedule Of Financing Receivables) (Details) - USD ($) $ in Millions	Oct. 28, 2017	Jul. 29, 2017	Oct. 29, 2016	Jul. 30, 2016
Financing Receivables [Line Items]
Allowance for credit loss	$ (289)	$ (295)	$ (386)	$ (375)
Current	5,038	4,856
Lease Receivables
Financing Receivables [Line Items]
Gross	2,848	2,784
Residual value	167	173
Unearned income	(143)	(145)
Allowance for credit loss	(160)	(162)
Total, net	2,712	2,650
Current	1,290	1,301
Noncurrent	1,422	1,349
Loan Receivables
Financing Receivables [Line Items]
Gross	4,748	4,560
Residual value	0	0
Unearned income	0	0
Allowance for credit loss	(106)	(103)
Total, net	4,642	4,457
Current	2,236	2,104
Noncurrent	2,406	2,353
Financed Service Contracts
Financing Receivables [Line Items]
Gross	2,583	2,517
Residual value	0	0
Unearned income	0	0
Allowance for credit loss	(23)	(30)
Total, net	2,560	2,487
Current	1,512	1,451
Noncurrent	1,048	1,036
Total
Financing Receivables [Line Items]
Gross	10,179	9,861
Residual value	167	173
Unearned income	(143)	(145)
Allowance for credit loss	(289)	(295)
Total, net	9,914	9,594
Current	5,038	4,856
Noncurrent	$ 4,876	$ 4,738

Financing Receivables and Ope63

Financing Receivables and Operating Leases (Schedule Of Contractual Maturities Of Gross Lease Receivables) (Details) $ in Millions	Oct. 28, 2017USD ($)
Receivables [Abstract]
2018 (remaining nine months)	$ 1,106
2,019	932
2,020	512
2,021	239
2,022	57
Thereafter	2
Total	$ 2,848

Financing Receivables and Ope64

Financing Receivables and Operating Leases (Schedule Of Financing Receivables Categorized By Internal Credit Risk Rating) (Details) - USD ($) $ in Millions	Oct. 28, 2017	Jul. 29, 2017
Financing Receivable, Recorded Investment [Line Items]
Gross receivables less unearned income	$ 10,036	$ 9,716
1 to 4
Financing Receivable, Recorded Investment [Line Items]
Gross receivables less unearned income	5,964	5,866
5 to 6
Financing Receivable, Recorded Investment [Line Items]
Gross receivables less unearned income	3,819	3,599
7 and Higher
Financing Receivable, Recorded Investment [Line Items]
Gross receivables less unearned income	253	251
Total
Financing Receivable, Recorded Investment [Line Items]
Gross receivables less unearned income	10,036	9,716
Lease Receivables | 1 to 4
Financing Receivable, Recorded Investment [Line Items]
Gross receivables less unearned income	1,320	1,408
Lease Receivables | 5 to 6
Financing Receivable, Recorded Investment [Line Items]
Gross receivables less unearned income	1,337	1,181
Lease Receivables | 7 and Higher
Financing Receivable, Recorded Investment [Line Items]
Gross receivables less unearned income	48	50
Lease Receivables | Total
Financing Receivable, Recorded Investment [Line Items]
Gross receivables less unearned income	2,705	2,639
Loan Receivables | 1 to 4
Financing Receivable, Recorded Investment [Line Items]
Gross receivables less unearned income	2,988	2,865
Loan Receivables | 5 to 6
Financing Receivable, Recorded Investment [Line Items]
Gross receivables less unearned income	1,571	1,516
Loan Receivables | 7 and Higher
Financing Receivable, Recorded Investment [Line Items]
Gross receivables less unearned income	189	179
Loan Receivables | Total
Financing Receivable, Recorded Investment [Line Items]
Gross receivables less unearned income	4,748	4,560
Financed Service Contracts | 1 to 4
Financing Receivable, Recorded Investment [Line Items]
Gross receivables less unearned income	1,656	1,593
Financed Service Contracts | 5 to 6
Financing Receivable, Recorded Investment [Line Items]
Gross receivables less unearned income	911	902
Financed Service Contracts | 7 and Higher
Financing Receivable, Recorded Investment [Line Items]
Gross receivables less unearned income	16	22
Financed Service Contracts | Total
Financing Receivable, Recorded Investment [Line Items]
Gross receivables less unearned income	$ 2,583	$ 2,517

Financing Receivables and Ope65

Financing Receivables and Operating Leases (Schedule Of Aging Analysis Of Financing Receivables) (Details) - USD ($) $ in Millions	Oct. 28, 2017	Jul. 29, 2017
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	$ 1,751	$ 1,733
Current	8,285	7,983
Total	10,036	9,716
Nonaccrual Financing Receivables	71	75
Impaired Financing Receivables	60	59
Past due 31-60 days
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	567	550
Past due 61-90 days
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	351	185
Past due 91 or above days
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	833	998
Lease Receivables
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	567	436
Current	2,138	2,203
Total	2,705	2,639
Nonaccrual Financing Receivables	14	14
Impaired Financing Receivables	14	14
Lease Receivables | Past due 31-60 days
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	161	160
Lease Receivables | Past due 61-90 days
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	86	60
Lease Receivables | Past due 91 or above days
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	320	216
Loan Receivables
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	633	537
Current	4,115	4,023
Total	4,748	4,560
Nonaccrual Financing Receivables	44	43
Impaired Financing Receivables	44	43
Loan Receivables | Past due 31-60 days
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	145	230
Loan Receivables | Past due 61-90 days
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	81	48
Loan Receivables | Past due 91 or above days
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	407	259
Financed Service Contracts
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	551	760
Current	2,032	1,757
Total	2,583	2,517
Nonaccrual Financing Receivables	13	18
Impaired Financing Receivables	2	2
Financed Service Contracts | Past due 31-60 days
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	261	160
Financed Service Contracts | Past due 61-90 days
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	184	77
Financed Service Contracts | Past due 91 or above days
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	$ 106	$ 523

Financing Receivables and Ope66

Financing Receivables and Operating Leases (Summary Of Allowances For Credit Loss And Related Financing Receivables) (Details) - USD ($) $ in Millions	3 Months Ended
	Oct. 28, 2017	Oct. 29, 2016
Financing Receivable, Allowance for Credit Losses [Roll Forward]
Allowance for credit loss as of beginning of period	$ 295	$ 375
Provisions	(6)	8
Foreign exchange and other	0	3
Allowance for credit loss as of end of period	289	386
Lease Receivables
Financing Receivable, Allowance for Credit Losses [Roll Forward]
Allowance for credit loss as of beginning of period	162	230
Provisions	(2)	(4)
Foreign exchange and other	0	1
Allowance for credit loss as of end of period	160	227
Loan Receivables
Financing Receivable, Allowance for Credit Losses [Roll Forward]
Allowance for credit loss as of beginning of period	103	97
Provisions	2	12
Foreign exchange and other	1	2
Allowance for credit loss as of end of period	106	111
Financed Service Contracts
Financing Receivable, Allowance for Credit Losses [Roll Forward]
Allowance for credit loss as of beginning of period	30	48
Provisions	(6)	0
Foreign exchange and other	(1)	0
Allowance for credit loss as of end of period	$ 23	$ 48

Financing Receivables and Ope67

Financing Receivables and Operating Leases (Operating Lease Schedule) (Details) - USD ($) $ in Millions	Oct. 28, 2017	Jul. 29, 2017
Receivables [Abstract]
Operating lease assets	$ 352	$ 356
Accumulated depreciation	(221)	(212)
Operating lease assets, net	$ 131	$ 144

Financing Receivables and Ope68

Financing Receivables and Operating Leases (Minimum future rental payments) (Details) $ in Millions	Oct. 28, 2017USD ($)
Receivables [Abstract]
2018 (remaining nine months)	$ 139
2,019	110
2,020	48
2,021	7
Thereafter	2
Total	$ 306

Investments (Summary Of Availab

Investments (Summary Of Available-For-Sale Investments) (Details) - USD ($) $ in Millions	Oct. 28, 2017	Jul. 29, 2017
Schedule of Investments [Line Items]
Amortized Cost	$ 59,988	$ 58,225
Gross Unrealized Gains	817	762
Gross Unrealized Losses	(260)	(203)
Fair Value	60,545	58,784
Net unsettled available-for-sale investments, purchases (sales)	95	(30)
Total fixed income securities
Schedule of Investments [Line Items]
Amortized Cost	58,854	57,045
Gross Unrealized Gains	164	208
Gross Unrealized Losses	(254)	(176)
Fair Value	58,764	57,077
Total fixed income securities | U.S. government securities
Schedule of Investments [Line Items]
Amortized Cost	20,564	19,880
Gross Unrealized Gains	0	3
Gross Unrealized Losses	(93)	(60)
Fair Value	20,471	19,823
Total fixed income securities | U.S. government agency securities
Schedule of Investments [Line Items]
Amortized Cost	1,923	2,057
Gross Unrealized Gains	0	0
Gross Unrealized Losses	(6)	(5)
Fair Value	1,917	2,052
Total fixed income securities | Non-U.S. government and agency securities
Schedule of Investments [Line Items]
Amortized Cost	358	389
Gross Unrealized Gains	0	0
Gross Unrealized Losses	(1)	(1)
Fair Value	357	388
Total fixed income securities | Corporate debt securities
Schedule of Investments [Line Items]
Amortized Cost	31,999	31,626
Gross Unrealized Gains	162	202
Gross Unrealized Losses	(131)	(93)
Fair Value	32,030	31,735
Total fixed income securities | U.S. agency mortgage-backed securities
Schedule of Investments [Line Items]
Amortized Cost	2,095	2,037
Gross Unrealized Gains	2	3
Gross Unrealized Losses	(23)	(17)
Fair Value	2,074	2,023
Total fixed income securities | Commercial paper
Schedule of Investments [Line Items]
Amortized Cost	1,775	996
Gross Unrealized Gains	0	0
Gross Unrealized Losses	0	0
Fair Value	1,775	996
Total fixed income securities | Certificates of deposit
Schedule of Investments [Line Items]
Amortized Cost	140	60
Gross Unrealized Gains	0	0
Gross Unrealized Losses	0	0
Fair Value	140	60
Publicly traded equity securities
Schedule of Investments [Line Items]
Amortized Cost	1,134	1,180
Gross Unrealized Gains	653	554
Gross Unrealized Losses	(6)	(27)
Fair Value	$ 1,781	$ 1,707

Investments (Gross Realized Gai

Investments (Gross Realized Gains And Gross Realized Losses Related To Available-For-Sale Investment) (Details) - USD ($) $ in Millions	3 Months Ended
	Oct. 28, 2017	Oct. 29, 2016
Investments [Abstract]
Gross realized gains	$ 67	$ 30
Gross realized losses	(34)	(15)
Total	$ 33	$ 15

Investments (Realized Net Gains

Investments (Realized Net Gains (Losses) Related To Available-For-Sale Investments) (Details) - USD ($) $ in Millions	3 Months Ended
	Oct. 28, 2017	Oct. 29, 2016
Schedule of Investments [Line Items]
Total	$ 33	$ 15
Net gains (losses) on investments in publicly traded equity securities
Schedule of Investments [Line Items]
Total	29	5
Net gains (losses) on investments in fixed income securities
Schedule of Investments [Line Items]
Total	$ 4	$ 10

Investments (Available-For-Sale

Investments (Available-For-Sale Investments With Gross Unrealized Losses) (Details) - USD ($) $ in Millions	Oct. 28, 2017	Jul. 29, 2017
Schedule of Investments [Line Items]
UNREALIZED LOSSES LESS THAN 12 MONTHS, Fair Value	$ 28,476	$ 28,215
UNREALIZED LOSSES LESS THAN 12 MONTHS, Gross Unrealized Losses	(138)	(195)
UNREALIZED LOSSES 12 MONTHS OR GREATER, Fair Value	8,340	1,040
UNREALIZED LOSSES 12 MONTHS OR GREATER, Gross Unrealized Losses	(122)	(8)
TOTAL, Fair Value	36,816	29,255
TOTAL, Gross Unrealized Losses	(260)	(203)
Publicly traded equity securities
Schedule of Investments [Line Items]
UNREALIZED LOSSES LESS THAN 12 MONTHS, Fair Value	54	122
UNREALIZED LOSSES LESS THAN 12 MONTHS, Gross Unrealized Losses	(6)	(27)
UNREALIZED LOSSES 12 MONTHS OR GREATER, Fair Value	0	0
UNREALIZED LOSSES 12 MONTHS OR GREATER, Gross Unrealized Losses	0	0
TOTAL, Fair Value	54	122
TOTAL, Gross Unrealized Losses	(6)	(27)
Total fixed income securities
Schedule of Investments [Line Items]
UNREALIZED LOSSES LESS THAN 12 MONTHS, Fair Value	28,422	28,093
UNREALIZED LOSSES LESS THAN 12 MONTHS, Gross Unrealized Losses	(132)	(168)
UNREALIZED LOSSES 12 MONTHS OR GREATER, Fair Value	8,340	1,040
UNREALIZED LOSSES 12 MONTHS OR GREATER, Gross Unrealized Losses	(122)	(8)
TOTAL, Fair Value	36,762	29,133
TOTAL, Gross Unrealized Losses	(254)	(176)
Total fixed income securities | U.S. government securities
Schedule of Investments [Line Items]
UNREALIZED LOSSES LESS THAN 12 MONTHS, Fair Value	16,719	14,962
UNREALIZED LOSSES LESS THAN 12 MONTHS, Gross Unrealized Losses	(66)	(55)
UNREALIZED LOSSES 12 MONTHS OR GREATER, Fair Value	3,602	771
UNREALIZED LOSSES 12 MONTHS OR GREATER, Gross Unrealized Losses	(27)	(5)
TOTAL, Fair Value	20,321	15,733
TOTAL, Gross Unrealized Losses	(93)	(60)
Total fixed income securities | U.S. government agency securities
Schedule of Investments [Line Items]
UNREALIZED LOSSES LESS THAN 12 MONTHS, Fair Value	1,696	1,791
UNREALIZED LOSSES LESS THAN 12 MONTHS, Gross Unrealized Losses	(4)	(4)
UNREALIZED LOSSES 12 MONTHS OR GREATER, Fair Value	222	130
UNREALIZED LOSSES 12 MONTHS OR GREATER, Gross Unrealized Losses	(2)	(1)
TOTAL, Fair Value	1,918	1,921
TOTAL, Gross Unrealized Losses	(6)	(5)
Total fixed income securities | Non-U.S. government and agency securities
Schedule of Investments [Line Items]
UNREALIZED LOSSES LESS THAN 12 MONTHS, Fair Value	316	368
UNREALIZED LOSSES LESS THAN 12 MONTHS, Gross Unrealized Losses	(1)	(1)
UNREALIZED LOSSES 12 MONTHS OR GREATER, Fair Value	41	0
UNREALIZED LOSSES 12 MONTHS OR GREATER, Gross Unrealized Losses	0	0
TOTAL, Fair Value	357	368
TOTAL, Gross Unrealized Losses	(1)	(1)
Total fixed income securities | Corporate debt securities
Schedule of Investments [Line Items]
UNREALIZED LOSSES LESS THAN 12 MONTHS, Fair Value	8,129	9,487
UNREALIZED LOSSES LESS THAN 12 MONTHS, Gross Unrealized Losses	(45)	(92)
UNREALIZED LOSSES 12 MONTHS OR GREATER, Fair Value	4,209	101
UNREALIZED LOSSES 12 MONTHS OR GREATER, Gross Unrealized Losses	(86)	(1)
TOTAL, Fair Value	12,338	9,588
TOTAL, Gross Unrealized Losses	(131)	(93)
Total fixed income securities | U.S. agency mortgage-backed securities
Schedule of Investments [Line Items]
UNREALIZED LOSSES LESS THAN 12 MONTHS, Fair Value	1,562	1,485
UNREALIZED LOSSES LESS THAN 12 MONTHS, Gross Unrealized Losses	(16)	(16)
UNREALIZED LOSSES 12 MONTHS OR GREATER, Fair Value	266	38
UNREALIZED LOSSES 12 MONTHS OR GREATER, Gross Unrealized Losses	(7)	(1)
TOTAL, Fair Value	1,828	1,523
TOTAL, Gross Unrealized Losses	$ (23)	$ (17)

Investments (Additional Informa

Investments (Additional Information) (Details) entity in Millions	3 Months Ended
	Oct. 28, 2017USD ($)entity	Oct. 29, 2016USD ($)	Jul. 29, 2017USD ($)
Schedule of Investments [Line Items]
Impairment charges of available-for-sale investments	$ 26,000,000	$ 0
Other than temporary impairment, credit losses recognized in earnings, credit losses on debt securities held	0
Average daily balance of securities lending	$ 500,000,000	$ 1,200,000,000
Fair value of securities received as collateral that can be resold or repledged, percentage (at least)	102.00%
Secured lending transactions outstanding	$ 0		$ 0
Number of variable interest entities required to be consolidated (entity) | entity	0
Investments in privately held companies	$ 947,000,000		$ 983,000,000
Funding commitments	213,000,000
Variable Interest Entity, Not Primary Beneficiary
Schedule of Investments [Line Items]
Investments in privately held companies	$ 519,000,000

Investments (Maturities Of Fixe

Investments (Maturities Of Fixed Income Securities) (Details) $ in Millions	Oct. 28, 2017USD ($)
Schedule of Investments [Line Items]
Amortized Cost	$ 58,854
Fair Value	58,764
Less than 1 year
Schedule of Investments [Line Items]
Amortized Cost	16,376
Fair Value	16,360
Due in 1 to 2 years
Schedule of Investments [Line Items]
Amortized Cost	14,866
Fair Value	14,820
Due in 2 to 5 years
Schedule of Investments [Line Items]
Amortized Cost	21,852
Fair Value	21,883
Due after 5 years
Schedule of Investments [Line Items]
Amortized Cost	3,665
Fair Value	3,627
Mortgage-backed securities with no single maturity
Schedule of Investments [Line Items]
Amortized Cost	2,095
Fair Value	$ 2,074

Investments (Equity Method and

Investments (Equity Method and Cost Method Investment) (Details) - USD ($) $ in Millions	Oct. 28, 2017	Jul. 29, 2017
Investments, Debt and Equity Securities [Abstract]
Equity method investments	$ 108	$ 124
Cost method investments	839	859
Total	$ 947	$ 983

Fair Value (Assets and Liabilit

Fair Value (Assets and Liabilities Measured At Fair Value On Recurring Basis) (Details) - USD ($)	Oct. 28, 2017	Jul. 29, 2017
Fair Value, Assets And Liabilities Measured On Recurring Basis [Line Items]
Total	$ 69,862,000,000	$ 68,824,000,000
Derivative liabilities	18,000,000	4,000,000
Level 1
Fair Value, Assets And Liabilities Measured On Recurring Basis [Line Items]
Total	10,884,000,000	11,274,000,000
Derivative liabilities	0	0
Level 2
Fair Value, Assets And Liabilities Measured On Recurring Basis [Line Items]
Total	58,978,000,000	57,550,000,000
Derivative liabilities	18,000,000	4,000,000
Level 3
Fair Value, Assets And Liabilities Measured On Recurring Basis [Line Items]
Total	0	0
Derivative liabilities	0	0
Cash equivalents: | Money market funds
Fair Value, Assets And Liabilities Measured On Recurring Basis [Line Items]
Total	9,103,000,000	9,567,000,000
Cash equivalents: | Money market funds | Level 1
Fair Value, Assets And Liabilities Measured On Recurring Basis [Line Items]
Total	9,103,000,000	9,567,000,000
Cash equivalents: | Money market funds | Level 2
Fair Value, Assets And Liabilities Measured On Recurring Basis [Line Items]
Total	0	0
Cash equivalents: | Money market funds | Level 3
Fair Value, Assets And Liabilities Measured On Recurring Basis [Line Items]
Total	0	0
Cash equivalents: | U.S. government securities
Fair Value, Assets And Liabilities Measured On Recurring Basis [Line Items]
Total	0	139,000,000
Cash equivalents: | U.S. government securities | Level 1
Fair Value, Assets And Liabilities Measured On Recurring Basis [Line Items]
Total	0	0
Cash equivalents: | U.S. government securities | Level 2
Fair Value, Assets And Liabilities Measured On Recurring Basis [Line Items]
Total	0	139,000,000
Cash equivalents: | U.S. government securities | Level 3
Fair Value, Assets And Liabilities Measured On Recurring Basis [Line Items]
Total	0	0
Cash equivalents: | Commercial paper
Fair Value, Assets And Liabilities Measured On Recurring Basis [Line Items]
Total	115,000,000	160,000,000
Cash equivalents: | Commercial paper | Level 1
Fair Value, Assets And Liabilities Measured On Recurring Basis [Line Items]
Total	0	0
Cash equivalents: | Commercial paper | Level 2
Fair Value, Assets And Liabilities Measured On Recurring Basis [Line Items]
Total	115,000,000	160,000,000
Cash equivalents: | Commercial paper | Level 3
Fair Value, Assets And Liabilities Measured On Recurring Basis [Line Items]
Total	0	0
Cash equivalents: | Certificates of deposit
Fair Value, Assets And Liabilities Measured On Recurring Basis [Line Items]
Total	0	25,000,000
Cash equivalents: | Certificates of deposit | Level 1
Fair Value, Assets And Liabilities Measured On Recurring Basis [Line Items]
Total	0	0
Cash equivalents: | Certificates of deposit | Level 2
Fair Value, Assets And Liabilities Measured On Recurring Basis [Line Items]
Total	0	25,000,000
Cash equivalents: | Certificates of deposit | Level 3
Fair Value, Assets And Liabilities Measured On Recurring Basis [Line Items]
Total	0	0
Available-for-sale investments: | U.S. government securities
Fair Value, Assets And Liabilities Measured On Recurring Basis [Line Items]
Total	20,471,000,000	19,823,000,000
Available-for-sale investments: | U.S. government securities | Level 1
Fair Value, Assets And Liabilities Measured On Recurring Basis [Line Items]
Total	0	0
Available-for-sale investments: | U.S. government securities | Level 2
Fair Value, Assets And Liabilities Measured On Recurring Basis [Line Items]
Total	20,471,000,000	19,823,000,000
Available-for-sale investments: | U.S. government securities | Level 3
Fair Value, Assets And Liabilities Measured On Recurring Basis [Line Items]
Total	0	0
Available-for-sale investments: | U.S. government agency securities
Fair Value, Assets And Liabilities Measured On Recurring Basis [Line Items]
Total	1,917,000,000	2,052,000,000
Available-for-sale investments: | U.S. government agency securities | Level 1
Fair Value, Assets And Liabilities Measured On Recurring Basis [Line Items]
Total	0	0
Available-for-sale investments: | U.S. government agency securities | Level 2
Fair Value, Assets And Liabilities Measured On Recurring Basis [Line Items]
Total	1,917,000,000	2,052,000,000
Available-for-sale investments: | U.S. government agency securities | Level 3
Fair Value, Assets And Liabilities Measured On Recurring Basis [Line Items]
Total	0	0
Available-for-sale investments: | Non-U.S. government and agency securities
Fair Value, Assets And Liabilities Measured On Recurring Basis [Line Items]
Total	357,000,000	388,000,000
Available-for-sale investments: | Non-U.S. government and agency securities | Level 1
Fair Value, Assets And Liabilities Measured On Recurring Basis [Line Items]
Total	0	0
Available-for-sale investments: | Non-U.S. government and agency securities | Level 2
Fair Value, Assets And Liabilities Measured On Recurring Basis [Line Items]
Total	357,000,000	388,000,000
Available-for-sale investments: | Non-U.S. government and agency securities | Level 3
Fair Value, Assets And Liabilities Measured On Recurring Basis [Line Items]
Total	0	0
Available-for-sale investments: | Corporate debt securities
Fair Value, Assets And Liabilities Measured On Recurring Basis [Line Items]
Total	32,030,000,000	31,735,000,000
Available-for-sale investments: | Corporate debt securities | Level 1
Fair Value, Assets And Liabilities Measured On Recurring Basis [Line Items]
Total	0	0
Available-for-sale investments: | Corporate debt securities | Level 2
Fair Value, Assets And Liabilities Measured On Recurring Basis [Line Items]
Total	32,030,000,000	31,735,000,000
Available-for-sale investments: | Corporate debt securities | Level 3
Fair Value, Assets And Liabilities Measured On Recurring Basis [Line Items]
Total	0	0
Available-for-sale investments: | U.S. agency mortgage-backed securities
Fair Value, Assets And Liabilities Measured On Recurring Basis [Line Items]
Total	2,074,000,000	2,023,000,000
Available-for-sale investments: | U.S. agency mortgage-backed securities | Level 1
Fair Value, Assets And Liabilities Measured On Recurring Basis [Line Items]
Total	0	0
Available-for-sale investments: | U.S. agency mortgage-backed securities | Level 2
Fair Value, Assets And Liabilities Measured On Recurring Basis [Line Items]
Total	2,074,000,000	2,023,000,000
Available-for-sale investments: | U.S. agency mortgage-backed securities | Level 3
Fair Value, Assets And Liabilities Measured On Recurring Basis [Line Items]
Total	0	0
Available-for-sale investments: | Commercial paper
Fair Value, Assets And Liabilities Measured On Recurring Basis [Line Items]
Total	1,775,000,000	996,000,000
Available-for-sale investments: | Commercial paper | Level 1
Fair Value, Assets And Liabilities Measured On Recurring Basis [Line Items]
Total	0	0
Available-for-sale investments: | Commercial paper | Level 2
Fair Value, Assets And Liabilities Measured On Recurring Basis [Line Items]
Total	1,775,000,000	996,000,000
Available-for-sale investments: | Commercial paper | Level 3
Fair Value, Assets And Liabilities Measured On Recurring Basis [Line Items]
Total	0	0
Available-for-sale investments: | Certificates of deposit
Fair Value, Assets And Liabilities Measured On Recurring Basis [Line Items]
Total	140,000,000	60,000,000
Available-for-sale investments: | Certificates of deposit | Level 1
Fair Value, Assets And Liabilities Measured On Recurring Basis [Line Items]
Total	0	0
Available-for-sale investments: | Certificates of deposit | Level 2
Fair Value, Assets And Liabilities Measured On Recurring Basis [Line Items]
Total	140,000,000	60,000,000
Available-for-sale investments: | Certificates of deposit | Level 3
Fair Value, Assets And Liabilities Measured On Recurring Basis [Line Items]
Total	0	0
Available-for-sale investments: | Publicly traded equity securities
Fair Value, Assets And Liabilities Measured On Recurring Basis [Line Items]
Total	1,781,000,000	1,707,000,000
Available-for-sale investments: | Publicly traded equity securities | Level 1
Fair Value, Assets And Liabilities Measured On Recurring Basis [Line Items]
Total	1,781,000,000	1,707,000,000
Available-for-sale investments: | Publicly traded equity securities | Level 2
Fair Value, Assets And Liabilities Measured On Recurring Basis [Line Items]
Total	0	0
Available-for-sale investments: | Publicly traded equity securities | Level 3
Fair Value, Assets And Liabilities Measured On Recurring Basis [Line Items]
Total	0	0
Derivative assets
Fair Value, Assets And Liabilities Measured On Recurring Basis [Line Items]
Total	99,000,000	149,000,000
Derivative assets | Level 1
Fair Value, Assets And Liabilities Measured On Recurring Basis [Line Items]
Total	0	0
Derivative assets | Level 2
Fair Value, Assets And Liabilities Measured On Recurring Basis [Line Items]
Total	99,000,000	149,000,000
Derivative assets | Level 3
Fair Value, Assets And Liabilities Measured On Recurring Basis [Line Items]
Total	0	0
Derivative liabilities
Fair Value, Assets And Liabilities Measured On Recurring Basis [Line Items]
Derivative liabilities	18,000,000	4,000,000
Derivative liabilities | Level 1
Fair Value, Assets And Liabilities Measured On Recurring Basis [Line Items]
Derivative liabilities	0	0
Derivative liabilities | Level 2
Fair Value, Assets And Liabilities Measured On Recurring Basis [Line Items]
Derivative liabilities	18,000,000	4,000,000
Derivative liabilities | Level 3
Fair Value, Assets And Liabilities Measured On Recurring Basis [Line Items]
Derivative liabilities	$ 0	$ 0

Fair Value (Fair Value, Nonrecu

Fair Value (Fair Value, Nonrecurring Measurement) (Details) - Fair Value, Measurements, Nonrecurring - Level 3 - USD ($) $ in Millions	3 Months Ended
	Oct. 28, 2017	Oct. 29, 2016
Fair Value Assets And Liabilities Measured On Nonrecurring Basis [Line Items]
Total gains (losses) for nonrecurring measurements	$ (21)	$ (89)
Investments in privately held companies (impaired)
Fair Value Assets And Liabilities Measured On Nonrecurring Basis [Line Items]
Total gains (losses) for nonrecurring measurements	(21)	(47)
Purchased intangible assets (impaired)
Fair Value Assets And Liabilities Measured On Nonrecurring Basis [Line Items]
Total gains (losses) for nonrecurring measurements	$ 0	$ (42)

Fair Value (Additional Informat

Fair Value (Additional Information) (Details) - USD ($)	Oct. 28, 2017	Jul. 29, 2017	Oct. 29, 2016
Fair Value Measurements [Line Items]
Senior notes, carrying value	$ 30,432,000,000	$ 30,472,000,000
Investments in privately held companies (impaired)
Fair Value Measurements [Line Items]
Carrying value of cost method investments in privately held companies	839,000,000	859,000,000
Level 3
Fair Value Measurements [Line Items]
Long term loan receivables and financed service contracts and others carrying value	3,500,000,000	3,400,000,000
Level 3 | Remaining carrying value of impaired investments
Fair Value Measurements [Line Items]
Remaining carrying value of the investments that were impaired	25,000,000		$ 46,000,000
Level 3 | Remaining carrying value of impaired purchased intangibles
Fair Value Measurements [Line Items]
Remaining carrying value of the investments that were impaired	0		$ 11,000,000
Level 2
Fair Value Measurements [Line Items]
Senior notes, fair value	32,000,000,000	32,100,000,000
Senior notes, carrying value	$ 30,400,000,000	$ 30,500,000,000

Borrowings (Schedule Of Short-T

Borrowings (Schedule Of Short-Term Debt) (Details) - USD ($) $ in Millions	Oct. 28, 2017	Jul. 29, 2017
Short-term Debt [Line Items]
Amount	$ 10,239	$ 7,992
Current portion of long-term debt
Short-term Debt [Line Items]
Amount	$ 4,748	$ 4,747
Effective Rate	1.70%	1.66%
Commercial paper
Short-term Debt [Line Items]
Amount	$ 5,491	$ 3,245
Effective Rate	1.25%	1.16%

Borrowings (Additional Informat

Borrowings (Additional Information) (Details) - USD ($)	Mar. 30, 2017	May 15, 2015	Oct. 28, 2017	Jul. 29, 2017	Mar. 31, 2017
Debt Instrument [Line Items]
Derivative, notional amount			$ 11,019,000,000	$ 11,590,000,000
Line of credit facility, amount outstanding			0
Unsecured revolving credit facility
Debt Instrument [Line Items]
Current borrowing capacity		$ 3,000,000,000
Additional credit facility upon agreement (up to)		$ 2,000,000,000
Unsecured revolving credit facility | 364-Day Credit Agreement With Certain Institutional Lenders | Revolving Credit Facility
Debt Instrument [Line Items]
Credit facility maximum borrowing capacity	$ 2,000,000,000
Unsecured revolving credit facility | Federal fund rate plus 0.50%
Debt Instrument [Line Items]
Interest rate based on % above pre-defined market rate		0.50%
Unsecured revolving credit facility | One-month LIBOR plus 1%
Debt Instrument [Line Items]
Interest rate based on % above pre-defined market rate		1.00%
Unsecured revolving credit facility | One-month LIBOR plus 1% | 364-Day Credit Agreement With Certain Institutional Lenders | Revolving Credit Facility
Debt Instrument [Line Items]
Interest rate based on % above pre-defined market rate	1.00%
Unsecured revolving credit facility | Eurodollar
Debt Instrument [Line Items]
Interest rate based on % above pre-defined market rate		0.00%
Unsecured revolving credit facility | Federal Funds Rate | 364-Day Credit Agreement With Certain Institutional Lenders | Revolving Credit Facility
Debt Instrument [Line Items]
Interest rate based on % above pre-defined market rate	0.50%
Derivatives designated as hedging instruments: | Interest rate derivatives
Debt Instrument [Line Items]
Derivative, notional amount			$ 6,750,000,000	$ 6,750,000,000
Commercial paper
Debt Instrument [Line Items]
Commercial paper, maximum borrowing limit (up to)					$ 10,000,000,000

Borrowings (Schedule Of Long-Te

Borrowings (Schedule Of Long-Term Debt) (Details) - USD ($) $ in Millions	3 Months Ended
	Oct. 28, 2017	Jul. 29, 2017
Debt Instrument [Line Items]
Total	$ 30,500	$ 30,500
Unaccreted discount/issuance costs	(130)	(136)
Hedge accounting fair value adjustments	62	108
Total	30,432	30,472
Current portion of long-term debt	4,748	4,747
Long-term debt	25,684	25,725
Floating Rate Notes 3-month Libor Plus 0.60% Due February 2018
Debt Instrument [Line Items]
Amount	$ 1,000	$ 1,000
Effective Rate	1.98%	1.84%
Floating Rate Notes 3-month Libor Plus 0.31% Due June 2018
Debt Instrument [Line Items]
Amount	$ 900	$ 900
Effective Rate	1.70%	1.62%
Floating Rate Notes 3-month Libor Plus 0.50% Due March 2019
Debt Instrument [Line Items]
Amount	$ 500	$ 500
Effective Rate	1.88%	1.76%
Floating Rate Notes 3-month Libor Plus 0.34% Due September 2019
Debt Instrument [Line Items]
Amount	$ 500	$ 500
Effective Rate	1.71%	1.66%
Fixed Rate Notes, 1.4%, Due February 28, 2018
Debt Instrument [Line Items]
Interest rate, stated percentage	1.40%
Amount	$ 1,250	$ 1,250
Effective Rate	1.47%	1.47%
Fixed rate notes 1.65% due June 2018
Debt Instrument [Line Items]
Interest rate, stated percentage	1.65%
Amount	$ 1,600	$ 1,600
Effective Rate	1.72%	1.72%
Fixed-Rate Notes, 4.95%, Due February 2019
Debt Instrument [Line Items]
Interest rate, stated percentage	4.95%
Amount	$ 2,000	$ 2,000
Effective Rate	4.96%	4.96%
Fixed-Rate Notes, 1.60%, Due February 2019
Debt Instrument [Line Items]
Interest rate, stated percentage	1.60%
Amount	$ 1,000	$ 1,000
Effective Rate	1.67%	1.67%
Fixed-Rate Notes, 2.125%, Due March 2019
Debt Instrument [Line Items]
Interest rate, stated percentage	2.125%
Amount	$ 1,750	$ 1,750
Effective Rate	1.85%	1.84%
Fixed-Rate Notes, 1.40%, Due September 2019
Debt Instrument [Line Items]
Interest rate, stated percentage	1.40%
Amount	$ 1,500	$ 1,500
Effective Rate	1.48%	1.48%
Fixed-Rate Notes, 4.45%, Due January 2020
Debt Instrument [Line Items]
Interest rate, stated percentage	4.45%
Amount	$ 2,500	$ 2,500
Effective Rate	3.85%	3.84%
Fixed-Rate Notes, 2.45%, Due June 2020
Debt Instrument [Line Items]
Interest rate, stated percentage	2.45%
Amount	$ 1,500	$ 1,500
Effective Rate	2.54%	2.54%
Fixed-Rate Notes, 2.2%, Due February 2021
Debt Instrument [Line Items]
Interest rate, stated percentage	2.20%
Amount	$ 2,500	$ 2,500
Effective Rate	2.30%	2.30%
Fixed-Rate Notes, 2.90%, Due March 2021
Debt Instrument [Line Items]
Interest rate, stated percentage	2.90%
Amount	$ 500	$ 500
Effective Rate	2.01%	2.00%
Fixed-Rate Notes, 1.85%, Due September 2021
Debt Instrument [Line Items]
Interest rate, stated percentage	1.85%
Amount	$ 2,000	$ 2,000
Effective Rate	1.90%	1.90%
Fixed-Rate Notes, 3.0 %, Due June 15, 2022
Debt Instrument [Line Items]
Interest rate, stated percentage	3.00%
Amount	$ 500	$ 500
Effective Rate	2.28%	2.26%
Fixed-Rate Notes, 2.6%, Due February, 2023
Debt Instrument [Line Items]
Interest rate, stated percentage	2.60%
Amount	$ 500	$ 500
Effective Rate	2.68%	2.68%
Fixed-Rate Notes, 2.20%, Due September 2023
Debt Instrument [Line Items]
Interest rate, stated percentage	2.20%
Amount	$ 750	$ 750
Effective Rate	2.27%	2.27%
Fixed-Rate Notes, 3.625%, Due March 2024
Debt Instrument [Line Items]
Interest rate, stated percentage	3.625%
Amount	$ 1,000	$ 1,000
Effective Rate	2.13%	2.12%
Fixed-Rate Notes,3.5%, Due June 15, 2025
Debt Instrument [Line Items]
Interest rate, stated percentage	3.50%
Amount	$ 500	$ 500
Effective Rate	2.44%	2.43%
Fixed-Rate Notes,2.95%, Due February, 2026
Debt Instrument [Line Items]
Interest rate, stated percentage	2.95%
Amount	$ 750	$ 750
Effective Rate	3.01%	3.01%
Fixed-Rate Notes, 2.50%, Due September 2026
Debt Instrument [Line Items]
Interest rate, stated percentage	2.50%
Amount	$ 1,500	$ 1,500
Effective Rate	2.55%	2.55%
Fixed-Rate Notes, 5.9%, Due February 2039
Debt Instrument [Line Items]
Interest rate, stated percentage	5.90%
Amount	$ 2,000	$ 2,000
Effective Rate	6.11%	6.11%
Fixed-Rate Notes, 5.5%, Due January 2040
Debt Instrument [Line Items]
Interest rate, stated percentage	5.50%
Amount	$ 2,000	$ 2,000
Effective Rate	5.67%	5.67%
One-month LIBOR plus | Floating Rate Notes 3-month Libor Plus 0.60% Due February 2018
Debt Instrument [Line Items]
Three-month LIBOR plus this percentage	0.60%
One-month LIBOR plus | Floating Rate Notes 3-month Libor Plus 0.31% Due June 2018
Debt Instrument [Line Items]
Three-month LIBOR plus this percentage	0.31%
One-month LIBOR plus | Floating Rate Notes 3-month Libor Plus 0.50% Due March 2019
Debt Instrument [Line Items]
Three-month LIBOR plus this percentage	0.50%
One-month LIBOR plus | Floating Rate Notes 3-month Libor Plus 0.34% Due September 2019
Debt Instrument [Line Items]
Three-month LIBOR plus this percentage	0.34%

Borrowings (Schedule Of Future

Borrowings (Schedule Of Future Principal Payments For Long-Term Debt) (Details) - USD ($) $ in Millions	Oct. 28, 2017	Jul. 29, 2017
Debt Disclosure [Abstract]
2018 (remaining nine months)	$ 4,750
2,019	5,250
2,020	6,000
2,021	3,000
2,022	2,500
Thereafter	9,000
Total	$ 30,500	$ 30,500

Derivative Instruments (Derivat

Derivative Instruments (Derivatives Recorded At Fair Value) (Details) - USD ($) $ in Millions	Oct. 28, 2017	Jul. 29, 2017
Derivative [Line Items]
DERIVATIVE ASSETS	$ 99	$ 149
DERIVATIVE LIABILITIES	18	4
Derivatives designated as hedging instruments:
Derivative [Line Items]
DERIVATIVE ASSETS	98	148
DERIVATIVE LIABILITIES	16	1
Derivatives designated as hedging instruments: | Foreign currency derivatives | Other current assets
Derivative [Line Items]
DERIVATIVE ASSETS	40	46
Derivatives designated as hedging instruments: | Foreign currency derivatives | Other current liabilities
Derivative [Line Items]
DERIVATIVE LIABILITIES	0	1
Derivatives designated as hedging instruments: | Equity derivatives/warrants | Other current assets
Derivative [Line Items]
DERIVATIVE ASSETS	0	0
Derivatives designated as hedging instruments: | Equity derivatives/warrants | Other current liabilities
Derivative [Line Items]
DERIVATIVE LIABILITIES	14	0
Derivatives designated as hedging instruments: | Interest rate derivatives | Other assets
Derivative [Line Items]
DERIVATIVE ASSETS	58	102
Derivatives designated as hedging instruments: | Interest rate derivatives | Other long-term liabilities
Derivative [Line Items]
DERIVATIVE LIABILITIES	2	0
Derivatives not designated as hedging instruments:
Derivative [Line Items]
DERIVATIVE ASSETS	1	1
DERIVATIVE LIABILITIES	2	3
Derivatives not designated as hedging instruments: | Foreign currency derivatives | Other current assets
Derivative [Line Items]
DERIVATIVE ASSETS	1	1
Derivatives not designated as hedging instruments: | Foreign currency derivatives | Other current liabilities
Derivative [Line Items]
DERIVATIVE LIABILITIES	2	3
Derivatives not designated as hedging instruments: | Equity derivatives/warrants | Other assets
Derivative [Line Items]
DERIVATIVE ASSETS	0	0
Derivatives not designated as hedging instruments: | Equity derivatives/warrants | Other long-term liabilities
Derivative [Line Items]
DERIVATIVE LIABILITIES	$ 0	$ 0

Derivative Instruments (Effect

Derivative Instruments (Effect Of Derivative Instruments Designated As Cash Flow Hedges On Other Comprehensive Income And Consolidated Statements Of Operations Summary) (Details) - USD ($) $ in Millions	3 Months Ended
	Oct. 28, 2017	Oct. 29, 2016
Derivatives designated as cash flow hedging instruments:
Derivative [Line Items]
GAINS (LOSSES) RECOGNIZED IN OCI ON DERIVATIVES FOR THE THREE MONTHS ENDED (EFFECTIVE PORTION)	$ 8	$ (46)
GAINS (LOSSES) RECLASSIFIED FROM AOCI INTO INCOME FOR THE THREE MONTHS ENDED (EFFECTIVE PORTION)	13	(12)
Derivatives designated as cash flow hedging instruments: | Foreign currency derivatives
Derivative [Line Items]
GAINS (LOSSES) RECOGNIZED IN OCI ON DERIVATIVES FOR THE THREE MONTHS ENDED (EFFECTIVE PORTION)	8	(46)
Derivatives designated as cash flow hedging instruments: | Foreign currency derivatives | Operating expenses
Derivative [Line Items]
GAINS (LOSSES) RECLASSIFIED FROM AOCI INTO INCOME FOR THE THREE MONTHS ENDED (EFFECTIVE PORTION)	10	(9)
Derivatives designated as cash flow hedging instruments: | Foreign currency derivatives | Cost of sales—service
Derivative [Line Items]
GAINS (LOSSES) RECLASSIFIED FROM AOCI INTO INCOME FOR THE THREE MONTHS ENDED (EFFECTIVE PORTION)	3	(3)
Derivatives designated as net investment hedging instruments: | Foreign currency derivatives
Derivative [Line Items]
GAINS (LOSSES) RECOGNIZED IN OCI ON DERIVATIVES FOR THE THREE MONTHS ENDED (EFFECTIVE PORTION)	(5)	9
Derivatives designated as net investment hedging instruments: | Foreign currency derivatives | Other income (loss), net
Derivative [Line Items]
GAINS (LOSSES) RECLASSIFIED FROM AOCI INTO INCOME FOR THE THREE MONTHS ENDED (EFFECTIVE PORTION)	$ 0	$ 0

Derivative Instruments (Additio

Derivative Instruments (Additional Information) (Details) $ in Millions	3 Months Ended
	Oct. 28, 2017USD ($)derivative	Jul. 29, 2017derivative
Derivative [Line Items]
Net derivative gains or losses to be reclassified from AOCI into earnings in next twelve months | $	$ 44
Fixed Income Securities
Derivative [Line Items]
Number of interest rate derivatives held (derivative) | derivative	0	0
Derivatives designated as cash flow hedging instruments:
Derivative [Line Items]
Foreign currency cash flow hedges maturity period, maximum, months	24 months

Derivative Instruments (Effec86

Derivative Instruments (Effect Of Derivative Instruments Designated As Fair Value Hedges And Underlying Hedged Items On Consolidated Statements Of Operations) (Details) - Derivatives Designated as Fair Value Hedging Instruments - USD ($) $ in Millions	3 Months Ended
	Oct. 28, 2017	Oct. 29, 2016
Hedge Underlying Gain Loss [Line Items]
GAINS (LOSSES) ON DERIVATIVE INSTRUMENTS FOR THE THREE MONTHS ENDED	$ (60)	$ (91)
GAINS (LOSSES) RELATED TO HEDGED ITEMS FOR THE THREE MONTHS ENDED	60	90
Interest rate derivatives | Interest expense
Hedge Underlying Gain Loss [Line Items]
GAINS (LOSSES) ON DERIVATIVE INSTRUMENTS FOR THE THREE MONTHS ENDED	(46)	(91)
GAINS (LOSSES) RELATED TO HEDGED ITEMS FOR THE THREE MONTHS ENDED	46	90
Equity derivatives | Other income (loss), net
Hedge Underlying Gain Loss [Line Items]
GAINS (LOSSES) ON DERIVATIVE INSTRUMENTS FOR THE THREE MONTHS ENDED	(14)	0
GAINS (LOSSES) RELATED TO HEDGED ITEMS FOR THE THREE MONTHS ENDED	$ 14	$ 0

Derivative Instruments (Effec87

Derivative Instruments (Effect Of Derivative Instruments Not Designated As Hedges On Consolidated Statement Of Operations Summary) (Details) - Derivatives not designated as hedging instruments: - USD ($) $ in Millions	3 Months Ended
	Oct. 28, 2017	Oct. 29, 2016
Derivative Instruments, Gain (Loss) [Line Items]
GAINS (LOSSES) FOR THE PERIOD	$ 24	$ (18)
Foreign currency derivatives | Other income (loss), net
Derivative Instruments, Gain (Loss) [Line Items]
GAINS (LOSSES) FOR THE PERIOD	7	(16)
Total return swaps—deferred compensation | Operating expenses
Derivative Instruments, Gain (Loss) [Line Items]
GAINS (LOSSES) FOR THE PERIOD	16	(3)
Equity derivatives | Other income (loss), net
Derivative Instruments, Gain (Loss) [Line Items]
GAINS (LOSSES) FOR THE PERIOD	$ 1	$ 1

Derivative Instruments (Schedul

Derivative Instruments (Schedule Of Notional Amounts Of Derivatives Outstanding) (Details) - USD ($)	Oct. 28, 2017	Jul. 29, 2017
Derivative [Line Items]
Derivatives	$ 11,019,000,000	$ 11,590,000,000
Derivatives designated as hedging instruments: | Foreign currency derivatives
Derivative [Line Items]
Derivatives	1,219,000,000	1,696,000,000
Derivatives designated as hedging instruments: | Interest rate derivatives
Derivative [Line Items]
Derivatives	6,750,000,000	6,750,000,000
Derivatives designated as hedging instruments: | Net investment hedging instruments
Derivative [Line Items]
Derivatives	266,000,000	351,000,000
Derivatives designated as hedging instruments: | Equity derivatives
Derivative [Line Items]
Derivatives	302,000,000	0
Derivatives not designated as hedging instruments: | Foreign currency derivatives
Derivative [Line Items]
Derivatives	1,918,000,000	2,258,000,000
Derivatives not designated as hedging instruments: | Total return swaps—deferred compensation
Derivative [Line Items]
Derivatives	$ 564,000,000	$ 535,000,000

Derivative Instruments (Offsett

Derivative Instruments (Offsetting of Derivative Assets and Liabilities) (Details) - USD ($) $ in Millions	Oct. 28, 2017	Jul. 29, 2017
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Gross Amount of Recognized, Assets	$ 99	$ 149
Gross Amounts Offset, Assets	0	0
Net Amounts Presented, Assets	99	149
Gross Derivative Amounts, Assets	(14)	(4)
Cash Collateral, Assets	(57)	(81)
Net Amount, Assets	28	64
Gross Amount of Recognized, Liabilities	18	4
Gross Amounts Offset, Liabilities	0	0
Net Amount Presented, Liabilities	18	4
Gross Derivative Amounts, Liabilities	(14)	(4)
Cash Collateral, Liabilities	0	0
Net Amount, Liabilities	$ 4	$ 0

Commitments and Contingencies90

Commitments and Contingencies (Schedule Of Future Minimum Lease Payments Under All Noncancelable Operating Leases) (Details) $ in Millions	Oct. 28, 2017USD ($)
Commitments and Contingencies Disclosure [Abstract]
2018 (remaining nine months)	$ 316
2,019	292
2,020	203
2,021	120
2,022	99
Thereafter	147
Total	$ 1,177

Commitments and Contingencies91

Commitments and Contingencies (Additional Information) (Details) $ in Millions

May 25, 2017USD ($)

Mar. 14, 2017USD ($)

Mar. 03, 2017USD ($)patent

May 12, 2016USD ($)

Jan. 15, 2016claimpatent

Sep. 04, 2013patent

Oct. 28, 2017USD ($)patent

Jan. 28, 2017USD ($)

Oct. 29, 2016USD ($)

Oct. 28, 2017USD ($)

Jul. 30, 2016USD ($)

Jul. 25, 2015USD ($)

Jul. 26, 2014USD ($)

Jul. 28, 2012USD ($)

Jul. 29, 2017USD ($)

Contingency [Line Items]

Purchase commitments

$ 4,205

$ 4,205

$ 4,640

Liability for purchase commitments

161

161

162

Future compensation expense & contingent consideration (up to)

298

298

Commitments and contingencies

Volume of channel partner financing

6,700

$ 6,900

Balance of the channel partner financing subject to guarantees

1,000

1,000

1,000

Financing provided by third parties for leases and loans on which the Company has provided guarantees

14

6

Charge to product cost of sales

3,615

3,403

Adjustments for pre-existing warranties

(12)

0

Brazilian authority claim of import tax evasion by importer tax portion

250

250

Brazilian authority claim of import tax evasion by importer interest portion

1,500

1,500

Brazilian authority claim of import tax evasion by importer penalties portion

$ 1,200

1,200

SRI International

Contingency [Line Items]

Damages awarded, value

$ 23.7

SRI International | Pending Litigation

Contingency [Line Items]

Damages awarded, value

$ 57

Number of allegedly infringed patents (patent) | patent

2

Percentage of royalty awarded

3.50%

Damages from Product Defects

Contingency [Line Items]

Charge for expected remediation

$ 125

Patent Infringement | Sprint Communications Company, L.P. vs. Time Warner Cable, Inc. | Pending Litigation

Contingency [Line Items]

Number of patents found infringed (patent) | patent

5

Damages awarded, value

$ 139.8

$ 139.8

Percentage of post-judgment interest awarded

1.06%

Pre-judgment interest requested

20.3

Patent Infringement | Huawei Technologies Co. Ltd. Vs. T-Mobile US, Inc. | Pending Litigation

Contingency [Line Items]

Number of patent infringement actions filed (claim) | claim

4

Number of allegedly infringed patents (patent) | patent

12

10

Patent Indemnification

Contingency [Line Items]

Legal and indemnification settlement

$ 122

Minimum

Contingency [Line Items]

Warranty period for products

90 days

Channel partners revolving short-term financing payment term

60 days

Maximum

Contingency [Line Items]

Warranty period for products

5 years

Channel partners revolving short-term financing payment term

90 days

End user lease and loan term

3 years

Insieme Networks Inc

Contingency [Line Items]

Variable interest entities investment

$ 100

Payments to acquire additional interest in subsidiaries

$ 1

323

Compensation expense related to acquisitions

1

$ 20

Investments in privately held companies (impaired)

Contingency [Line Items]

Commitments and contingencies

213

213

216

Supplier Component Remediation Liability

Contingency [Line Items]

Charge to product cost of sales

$ 655

Loss contingency accrual

$ 146

$ 146

$ 174

Supplier Component Remediation Liability | Cost of Goods, Product Line

Contingency [Line Items]

Adjustments for pre-existing warranties

$ (141)

$ 74

$ 164

Commitments and Contingencies92

Commitments and Contingencies (Schedule of Other Commitments) (Details) - USD ($) $ in Millions	3 Months Ended
	Oct. 28, 2017	Oct. 29, 2016
Acquisition
Contingency [Line Items]
Compensation expense related to acquisitions	$ 42	$ 64

Commitments and Contingencies93

Commitments and Contingencies (Schedule Of Product Warranty Liability) (Details) - USD ($) $ in Millions	3 Months Ended
	Oct. 28, 2017	Oct. 29, 2016
Movement in Standard and Extended Product Warranty, Increase (Decrease) [Roll Forward]
Balance at beginning of period	$ 407	$ 414
Provisions for warranty issued	148	176
Adjustments for pre-existing warranties	(12)	0
Settlements	(149)	(177)
Balance at end of period	$ 394	$ 413

Commitments and Contingencies94

Commitments and Contingencies (Schedule of Financing Guarantees Outstanding) (Details) - USD ($) $ in Millions	Oct. 28, 2017	Jul. 29, 2017
Loss Contingencies [Line Items]
Maximum potential future payments relating to financing guarantees:	$ 331	$ 314
Deferred revenue associated with financing guarantees:	(125)	(134)
Maximum potential future payments relating to financing guarantees, net of associated deferred revenue	206	180
Channel partner
Loss Contingencies [Line Items]
Maximum potential future payments relating to financing guarantees:	266	240
Deferred revenue associated with financing guarantees:	(79)	(82)
End user
Loss Contingencies [Line Items]
Maximum potential future payments relating to financing guarantees:	65	74
Deferred revenue associated with financing guarantees:	$ (46)	$ (52)

Shareholders' Equity (Additiona

Shareholders' Equity (Additional Information) (Details) - USD ($) $ / shares in Units, shares in Millions	3 Months Ended
	Oct. 28, 2017	Oct. 29, 2016
Stockholders' Equity Note [Abstract]
Cash dividends paid per common share (in dollars per share)	$ 0.29	$ 0.26
Payments of dividends	$ 1,436,000,000	$ 1,308,000,000
Authorized common stock repurchase amount	112,000,000,000
Remaining authorized repurchase amount	$ 10,100,000,000
Shares repurchased for tax withholdings on vesting of restricted stock units (in shares)	11	13
Payments related to tax withholding for share-based compensation	$ 342,000,000	$ 401,000,000

Shareholders' Equity (Stock Rep

Shareholders' Equity (Stock Repurchase Program) (Details) - USD ($)	3 Months Ended
	Oct. 28, 2017	Jul. 29, 2017
Shares Repurchased
Cumulative Shares Repurchased, Beginning balance (in shares)	4,709,000,000
Repurchase of common stock under the stock repurchase program, Shares Repurchased (in shares)	51,000,000
Cumulative Shares Repurchased, Ending balance (in shares)	4,760,000,000
Weighted- Average Price per Share
Cumulative Weighted-Average Price per Share, Beginning balance (in dollars per share)	$ 21.30
Repurchase of common stock under the stock repurchase program, Weighted-Average Price per Share (in dollars per share)	31.80
Cumulative Weighted-Average Price per Share, Ending balance (in dollars per share)	$ 21.41
Amount Repurchased
Cumulative Amount Repurchased, Beginning balance	$ 100,303,000,000
Repurchase of common stock under the stock repurchase program, Amount Repurchased	1,620,000,000
Cumulative Amount Repurchased, Ending balance	101,923,000,000
Stock repurchase program
Class of Stock [Line Items]
Stock repurchases pending settlement	$ 0	$ 66,000,000

Employee Benefit Plans (Additio

Employee Benefit Plans (Additional Information) (Details) $ / shares in Units, $ in Billions	Nov. 12, 2009shares	Oct. 28, 2017USD ($)stock_incentive_planshares	Oct. 29, 2016shares	Oct. 27, 2017$ / shares	Jul. 29, 2017$ / sharesshares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of stock incentive plans (stock incentive plan) | stock_incentive_plan		1
Total compensation cost related to unvested share-based awards | $		$ 2.9
Expected period of recognition of compensation cost		2 years 7 months 6 days
Closing stock price (in dollars per share) | $ / shares				$ 34.43
In-the-money exercisable stock option shares (in shares)		7,000,000
Number Exercisable (in shares)					6,000,000
Weighted- average exercise price per share (in dollars per share) | $ / shares					$ 5.61
Employee Stock Purchase Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares reserved for issuance (in shares)		621,400,000
Expiration date for stock options and stock appreciation rights		24 months
Shares eligible for employees purchase, percentage of discount		15.00%
Shares issued under employee purchase plan, shares (in shares)		0	0
Shares available for issuance (in shares)		100,000,000
2005 Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares reserved for issuance (in shares)		694,000,000
Exercise price as a percentage of market value for Options	100.00%
Award requisite service period		3 years
PRSU allocation between Financial operating goals and TSR		50.00%
2005 Plan | Stock awards subsequent to November 12, 2009
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Reduction in shares available for issuance pursuant to November 12, 2009 amendment (in shares)	1.5	1.5
2005 Plan | Stock awards subsequent to November 12, 2009 | Maximum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Expiration date for stock options and stock appreciation rights	10 years
2005 Plan | Employee Stock Option
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award vesting period		1 year
2005 Plan | Employee Stock Option | Minimum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based compensation award vesting rights, percentage		20.00%
Award requisite service period		36 months
2005 Plan | Employee Stock Option | Maximum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based compensation award vesting rights, percentage		25.00%
Award requisite service period		48 months
2005 Plan | Performance base and Market base RSU
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award requisite service period		3 years
2005 Plan | Performance based RSU based on Financial or nonFinancial operating goal | Minimum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award requisite service period		6 months
2005 Plan | Performance based RSU based on Financial or nonFinancial operating goal | Maximum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award requisite service period		3 years
2005 Plan | PRSU based on financial performance metrics | Minimum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based compensation award vesting rights, percentage		0.00%
2005 Plan | PRSU based on financial performance metrics | Maximum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based compensation award vesting rights, percentage		150.00%
2005 Plan | PRSU based on TSR | Minimum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based compensation award vesting rights, percentage		0.00%
2005 Plan | PRSU based on TSR | Maximum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based compensation award vesting rights, percentage		150.00%
2005 Plan | PRSU based on nonfinancial operating goals | Minimum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based compensation award vesting rights, percentage		0.00%
2005 Plan | PRSU based on nonfinancial operating goals | Maximum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based compensation award vesting rights, percentage		100.00%
2005 Plan | Time Based Stock Grants And Restricted Stock Units (RSUs)
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award vesting period		4 years

Employee Benefit Plans (Summary

Employee Benefit Plans (Summary Of Share-Based Compensation Expense) (Details) - USD ($) $ in Millions	3 Months Ended
	Oct. 28, 2017	Oct. 29, 2016
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Total share-based compensation expense	$ 398	$ 372
Income tax benefit for share-based compensation	175	105
Cost of sales—product
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Total share-based compensation expense	23	21
Cost of sales—service
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Total share-based compensation expense	34	33
Share-based compensation expense in cost of sales
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Total share-based compensation expense	57	54
Research and development
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Total share-based compensation expense	136	126
Sales and marketing
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Total share-based compensation expense	135	140
General and administrative
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Total share-based compensation expense	64	49
Restructuring and other charges
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Total share-based compensation expense	6	3
Share-based compensation expense in operating expenses
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Total share-based compensation expense	$ 341	$ 318

Employee Benefit Plans (Summa99

Employee Benefit Plans (Summary of Share-Based Awards available for Grant) (Details) - shares	3 Months Ended	12 Months Ended
	Oct. 28, 2017	Jul. 29, 2017
Share-based Compensation Arrangement by Share-based Payment Award, Non-Option Equity Instruments, Outstanding [Roll Forward]
Balance, beginning of period (in shares)	272,000,000	242,000,000
Restricted stock, stock units, and other share-based awards granted (in shares)	(16,000,000)	(76,000,000)
Share-based awards canceled/forfeited/expired (in shares)	5,000,000	78,000,000
Shares withheld for taxes and not issued (in shares)	15,000,000	28,000,000
Balance, end of period (in shares)	276,000,000	272,000,000

Employee Benefit Plans (Summ100

Employee Benefit Plans (Summary Of Restricted Stock And Stock Unit Activity) (Details) - USD ($) $ / shares in Units, $ in Millions	3 Months Ended	12 Months Ended
	Oct. 28, 2017	Jul. 29, 2017
Restricted Stock/ Stock Units
Assumed from acquisitions (in shares)	3,000,000	8,000,000
Weighted- Average Price per Share
Assumed from acquisitions (in dollars per share)	$ 8.07	$ 4.47
Restricted Stock/Stock Units
Restricted Stock/ Stock Units
Beginning balance (in shares)	141,000,000	145,000,000
Granted (in shares)	10,000,000	50,000,000
Assumed from acquisitions (in shares)	1,000,000	15,000,000
Vested (in shares)	(29,000,000)	(54,000,000)
Canceled/forfeited (in shares)	(6,000,000)	(15,000,000)
Ending balance (in shares)	117,000,000	141,000,000
Weighted- Average Price per Share
Beginning balance (in dollars per share)	$ 26.94	$ 24.26
Granted (in dollars per share)	30.19	27.89
Assumed from acquisitions (in dollars per share)	28.70	32.21
Vested (in dollars per share)	24.52	23.14
Canceled/forfeited (in dollars per share)	28.73	23.56
Ending balance (in dollars per share)	$ 27.75	$ 26.94
Aggregate Fair Value	$ 927	$ 1,701

Employee Benefit Plans (Summ101

Employee Benefit Plans (Summary Of Stock Option Activity) (Details) - $ / shares	3 Months Ended	12 Months Ended
	Oct. 28, 2017	Jul. 29, 2017
Number Outstanding
Beginning balance (in shares)	12,000,000	73,000,000
Assumed from acquisitions (in shares)	3,000,000	8,000,000
Exercised (in shares)	(2,000,000)	(14,000,000)
Canceled/forfeited/expired (in shares)		(55,000,000)
Ending balance (in shares)	13,000,000	12,000,000
Weighted-Average Exercise Price per Share
Beginning balance (in dollars per share)	$ 6.15	$ 26.78
Assumed from acquisitions (in dollars per share)	8.07	4.47
Exercised (in dollars per share)	5.19	12.11
Canceled/forfeited/expired (in dollars per share)		31.83
Ending Balance (in dollars per share)	$ 6.68	$ 6.15

Employee Benefit Plans (Summ102

Employee Benefit Plans (Summary Of Significant Ranges Of Outstanding And Exercisable Stock Options) (Details) - USD ($) $ / shares in Units, $ in Millions	3 Months Ended
	Oct. 28, 2017	Jul. 29, 2017	Jul. 30, 2016
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number Outstanding (in shares)	13,000,000	12,000,000	73,000,000
Weighted- Average Exercise Price per Share (in dollars per share)	$ 6.68	$ 6.15	$ 26.78
Number Exercisable (in shares)		6,000,000
Weighted- Average Exercise Price per Share (in dollars per share)		$ 5.61
$ 0.01 – 30.00
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number Outstanding (in shares)	13,000,000
Weighted- Average Remaining Contractual Life (in Years)	6 years 7 months 6 days
Weighted- Average Exercise Price per Share (in dollars per share)	$ 6.68
Aggregate Intrinsic Value (Outstanding Options)	$ 371
Number Exercisable (in shares)	7,000,000
Weighted- Average Exercise Price per Share (in dollars per share)	$ 5.90
Aggregate Intrinsic Value (Exercisable Options)	$ 193
Minimum | $ 0.01 – 30.00
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Weighted- Average Exercise Price per Share (in dollars per share)	$ 0.01
Weighted- Average Exercise Price per Share (in dollars per share)	0.01
Maximum | $ 0.01 – 30.00
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Weighted- Average Exercise Price per Share (in dollars per share)	30
Weighted- Average Exercise Price per Share (in dollars per share)	$ 30

Employee Benefit Plans (Summ103

Employee Benefit Plans (Summary Assumptions Related To And Valuation Of Employee Share-Based Awards (Time-Based RSU and PRSU)) (Details) - $ / shares	3 Months Ended
	Oct. 28, 2017	Oct. 29, 2016
RESTRICTED STOCK UNITS
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares granted (in shares)	7,000,000	7,000,000
Grant date fair value per share (in dollars per share)	$ 29.81	$ 28.55
Expected dividend yield	3.60%	3.30%
Range of risk-free interest rates, minimum	1.00%	0.00%
Range of risk-free interest rates, maximum	1.90%	1.20%
PERFORMANCE RESTRICTED STOCK UNITS
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares granted (in shares)	3,000,000	3,000,000
Grant date fair value per share (in dollars per share)	$ 31.31	$ 29.62
Expected dividend yield	3.60%	3.30%
Range of risk-free interest rates, minimum	1.00%	0.10%
Range of risk-free interest rates, maximum	1.60%	0.90%
Range of expected volatilities for index, minimum	13.20%	16.70%
Range of expected volatilities for index, maximum	81.00%	46.80%

Comprehensive Income (AOCI comp

Comprehensive Income (AOCI components) (Details) - USD ($) $ in Millions	3 Months Ended
	Oct. 28, 2017	Oct. 29, 2016
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Balance, beginning of period	$ 66,137
Balance, end of period	65,550
Net Unrealized Gains (Losses) on Available-for-Sale Investments
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Balance, beginning of period	373	$ 413
Other comprehensive income (loss) before reclassifications attributable to Cisco Systems, Inc.	18	(210)
(Gains) losses reclassified out of AOCI	(33)	(15)
Tax benefit (expense)	(13)	86
Balance, end of period	345	274
Net Unrealized Gains (Losses) Cash Flow Hedging Instruments
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Balance, beginning of period	32	(59)
Other comprehensive income (loss) before reclassifications attributable to Cisco Systems, Inc.	8	(46)
(Gains) losses reclassified out of AOCI	(13)	12
Tax benefit (expense)	1	2
Balance, end of period	28	(91)
Cumulative Translation Adjustment and Actuarial Gains (Losses)
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Balance, beginning of period	(359)	(680)
Other comprehensive income (loss) before reclassifications attributable to Cisco Systems, Inc.	18	(26)
(Gains) losses reclassified out of AOCI	1	0
Tax benefit (expense)	(2)	(1)
Balance, end of period	(342)	(707)
Accumulated Other Comprehensive Income (Loss)
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Balance, beginning of period	46	(326)
Other comprehensive income (loss) before reclassifications attributable to Cisco Systems, Inc.	44	(282)
(Gains) losses reclassified out of AOCI	(45)	(3)
Tax benefit (expense)	(14)	87
Balance, end of period	$ 31	$ (524)

Comprehensive Income (Reclassif

Comprehensive Income (Reclassification out of other comprehensive income) (Details) - USD ($) $ in Millions	3 Months Ended
	Oct. 28, 2017	Oct. 29, 2016
Reclassification Adjustment out of Accumulated Other Comprehensive Income on Derivatives [Line Items]
Total amounts reclassified out of AOCI	$ 45	$ 3
Cumulative translation adjustment and actuarial gains and losses
Reclassification Adjustment out of Accumulated Other Comprehensive Income on Derivatives [Line Items]
Cumulative translation adjustment and actuarial gains and losses	(1)	0
Reclassification out of Accumulated Other Comprehensive Income | Net unrealized gains and losses on available-for-sale investments
Reclassification Adjustment out of Accumulated Other Comprehensive Income on Derivatives [Line Items]
Other income (loss), net	33	15
Reclassification out of Accumulated Other Comprehensive Income | Net unrealized gains and losses on cash flow hedging instruments | Cash Flow Hedging
Reclassification Adjustment out of Accumulated Other Comprehensive Income on Derivatives [Line Items]
Operating expenses	10	(9)
Cost of sales—service	3	(3)
Net unrealized gains and losses on cash flow hedging instruments	$ 13	$ (12)

Income Taxes (Income Before Pro

Income Taxes (Income Before Provision For Income Taxes) (Details) - USD ($) $ in Millions	3 Months Ended
	Oct. 28, 2017	Oct. 29, 2016
Income Tax Disclosure [Abstract]
Income before provision for income taxes	$ 2,962	$ 2,953
Provision for income taxes	$ 568	$ 631
Effective tax rate	19.20%	21.40%

Income Taxes (Additional Inform

Income Taxes (Additional Information) (Details) $ in Millions	Oct. 28, 2017USD ($)
Income Tax Disclosure [Abstract]
Unrecognized tax benefits	$ 2,100
Unrecognized tax benefits that would impact effective tax rate	1,500
Unrecognized tax benefit that could be reduced in next 12 months	$ 100

Segment Information and Majo108

Segment Information and Major Customers (Additional Information) (Details) $ in Millions	3 Months Ended
	Oct. 28, 2017USD ($)segment	Oct. 29, 2016USD ($)	Jul. 29, 2017USD ($)
Segment Reporting Information [Line Items]
Number of geographic segments (segment) | segment	3
Revenue, total	$ 12,136	$ 12,352
United States
Segment Reporting Information [Line Items]
Revenue, total	6,500	$ 6,600
Cash and cash equivalents and investments	2,500		$ 3,000
International
Segment Reporting Information [Line Items]
Cash and cash equivalents and investments	$ 69,100		$ 67,500

Segment Information and Majo109

Segment Information and Major Customers (Summary Of Reportable Segments) (Details) - USD ($) $ in Millions	3 Months Ended
	Oct. 28, 2017	Oct. 29, 2016
Segment Reporting Information [Line Items]
Revenue, total	$ 12,136	$ 12,352
Gross margin	7,427	7,884
Operating Segments | Americas
Segment Reporting Information [Line Items]
Revenue, total	7,350	7,443
Gross margin	4,722	4,833
Operating Segments | EMEA
Segment Reporting Information [Line Items]
Revenue, total	2,909	3,013
Gross margin	1,839	2,013
Operating Segments | APJC
Segment Reporting Information [Line Items]
Revenue, total	1,877	1,896
Gross margin	1,165	1,204
Segment Reconciling Items
Segment Reporting Information [Line Items]
Gross margin	7,726	8,050
Intersegment Eliminations
Segment Reporting Information [Line Items]
Gross margin	$ (299)	$ (166)

Segment Information and Majo110

Segment Information and Major Customers (Summary Of Net Revenue For Groups Of Similar Products And Services) (Details) - USD ($) $ in Millions	3 Months Ended
	Oct. 28, 2017	Oct. 29, 2016
Segment Reporting, Revenue Reconciling Item [Line Items]
Revenue, total	$ 12,136	$ 12,352
Infrastructure Platforms
Segment Reporting, Revenue Reconciling Item [Line Items]
Revenue, total	6,970	7,273
Applications
Segment Reporting, Revenue Reconciling Item [Line Items]
Revenue, total	1,203	1,136
Security
Segment Reporting, Revenue Reconciling Item [Line Items]
Revenue, total	585	540
Other Products
Segment Reporting, Revenue Reconciling Item [Line Items]
Revenue, total	296	353
Total Product
Segment Reporting, Revenue Reconciling Item [Line Items]
Revenue, total	9,054	9,302
Service
Segment Reporting, Revenue Reconciling Item [Line Items]
Revenue, total	$ 3,082	$ 3,050

Segment Information and Majo111

Segment Information and Major Customers (Property and Equipment Information for Geographic Areas) (Details) - USD ($) $ in Millions	Oct. 28, 2017	Jul. 29, 2017
Segment Reporting, Asset Reconciling Item [Line Items]
Property and equipment, net	$ 3,202	$ 3,322
United States
Segment Reporting, Asset Reconciling Item [Line Items]
Property and equipment, net	2,624	2,711
International
Segment Reporting, Asset Reconciling Item [Line Items]
Property and equipment, net	$ 578	$ 611

Net Income per Share (Calculati

Net Income per Share (Calculation Of Basic And Diluted Net Income Per Share) (Details) - USD ($) $ / shares in Units, shares in Millions, $ in Millions	3 Months Ended
	Oct. 28, 2017	Oct. 29, 2016
Earnings Per Share [Abstract]
Net income	$ 2,394	$ 2,322
Weighted-average shares—basic (in shares)	4,959	5,027
Effect of dilutive potential common shares (in shares)	35	39
Weighted-average shares—diluted (in shares)	4,994	5,066
Net income per share—basic (in dollars per share)	$ 0.48	$ 0.46
Net income per share—diluted (in dollars per share)	$ 0.48	$ 0.46
Antidilutive employee share-based awards, excluded (in shares)	15	67