Cisco Systems (CSCO) 10-Q 21 Feb 17 2017 Q2 Quarterly report Financial data

Document and Entity Information

Document and Entity Information - shares	6 Months Ended
	Jan. 28, 2017	Feb. 16, 2017
Document Documentand Entity Information [Abstract]
Document Type	10-Q
Amendment Flag	false
Document Period End Date	Jan. 28, 2017
Document Fiscal Period Focus	Q2
Document Fiscal Year Focus	2,017
Trading Symbol	CSCO
Entity Registrant Name	CISCO SYSTEMS, INC.
Entity Central Index Key	858,877
Entity Current Reporting Status	Yes
Current Fiscal Year End Date	--07-29
Entity Filer Category	Large Accelerated Filer
Entity Common Stock, Shares Outstanding		5,007,856,247

Consolidated Balance Sheets

Consolidated Balance Sheets - USD ($) $ in Millions	Jan. 28, 2017	Jul. 30, 2016
Current assets:
Cash and cash equivalents	$ 10,898	$ 7,631
Investments	60,947	58,125
Accounts receivable, net of allowance for doubtful accounts of $225 at January 28, 2017 and $249 at July 30, 2016	4,458	5,847
Inventories	1,264	1,217
Financing receivables, net	4,496	4,272
Other current assets	1,329	1,627
Total current assets	83,392	78,719
Property and equipment, net	3,422	3,506
Financing receivables, net	4,664	4,158
Goodwill	26,822	26,625
Purchased intangible assets, net	2,117	2,501
Deferred tax assets	4,293	4,299
Other assets	1,538	1,844
TOTAL ASSETS	126,248	121,652
Current liabilities:
Short-term debt	4,451	4,160
Accounts payable	957	1,056
Income taxes payable	57	517
Accrued compensation	2,522	2,951
Deferred revenue	10,243	10,155
Other current liabilities	4,478	6,072
Total current liabilities	22,708	24,911
Long-term debt	30,471	24,483
Income taxes payable	1,025	925
Deferred revenue	6,843	6,317
Other long-term liabilities	1,383	1,431
Total liabilities	62,430	58,067
Commitments and contingencies
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; 5,007 and 5,029 shares issued and outstanding at January 28, 2017 and July 30, 2016, respectively	44,585	44,516
Retained earnings	20,027	19,396
Accumulated other comprehensive income (loss)	(801)	(326)
Total Cisco shareholders’ equity	63,811	63,586
Noncontrolling interests	7	(1)
Total equity	63,818	63,585
TOTAL LIABILITIES AND EQUITY	$ 126,248	$ 121,652

Consolidated Balance Sheets (Pa

Consolidated Balance Sheets (Parenthetical) - USD ($) $ in Millions	Jan. 28, 2017	Jul. 30, 2016
Statement of Financial Position [Abstract]
Accounts receivable, allowance for doubtful accounts	$ 225	$ 249
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)	5,007,000,000	5,029,000,000
Common stock, shares outstanding (in shares)	5,007,000,000	5,029,000,000

Consolidated Statements Of Oper

Consolidated Statements Of Operations - USD ($) shares in Millions, $ in Millions	3 Months Ended		6 Months Ended
	Jan. 28, 2017	Jan. 23, 2016	Jan. 28, 2017	Jan. 23, 2016
REVENUE:
Product	$ 8,491	$ 8,983	$ 17,793	$ 18,827
Service	3,089	2,944	6,139	5,782
Total revenue	11,580	11,927	23,932	24,609
COST OF SALES:
Product	3,305	3,480	6,708	7,333
Service	999	1,015	2,064	2,012
Total cost of sales	4,304	4,495	8,772	9,345
GROSS MARGIN	7,276	7,432	15,160	15,264
OPERATING EXPENSES:
Research and development	1,508	1,509	3,053	3,069
Sales and marketing	2,222	2,286	4,640	4,729
General and administrative	456	176	1,011	715
Amortization of purchased intangible assets	64	71	142	140
Restructuring and other charges	133	96	544	238
Total operating expenses	4,383	4,138	9,390	8,891
OPERATING INCOME	2,893	3,294	5,770	6,373
Interest income	329	237	624	462
Interest expense	(222)	(162)	(420)	(321)
Other income (loss), net	(37)	(63)	(58)	(71)
Interest and other income (loss), net	70	12	146	70
INCOME BEFORE PROVISION FOR INCOME TAXES	2,963	3,306	5,916	6,443
Provision for income taxes	615	159	1,246	866
NET INCOME	$ 2,348	$ 3,147	$ 4,670	$ 5,577
Net income per share:
Basic (in dollars per share)	$ 0.47	$ 0.62	$ 0.93	$ 1.10
Diluted (in dollars per share)	$ 0.47	$ 0.62	$ 0.92	$ 1.09
Shares used in per-share calculation:
Basic (in shares)	5,015	5,070	5,021	5,075
Diluted (in shares)	5,040	5,097	5,054	5,106
Cash dividends declared per common share (in dollars per share)	$ 0.26	$ 0.21	$ 0.52	$ 0.42

Consolidated Statements Of Comp

Consolidated Statements Of Comprehensive Income - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jan. 28, 2017	Jan. 23, 2016	Jan. 28, 2017	Jan. 23, 2016
Statement of Comprehensive Income [Abstract]
Net income	$ 2,348	$ 3,147	$ 4,670	$ 5,577
Available-for-sale investments:
Change in net unrealized gains, net of tax benefit (expense) of $73 and $154 for the three and six months ended January 28, 2017, respectively, and $149 and $205 for the corresponding periods of fiscal 2016, respectively	(276)	(212)	(397)	(312)
Net (gains) losses reclassified into earnings, net of tax (benefit) expense of $(11) and $(6) for the three and six months ended January 28, 2017, respectively, and $(7) for each of the three and six months ended January 23, 2016	19	12	9	13
Total- Available-for-sale investments	(257)	(200)	(388)	(299)
Cash flow hedging instruments:
Change in unrealized gains and losses, net of tax benefit (expense) of $1 and $4 for the three and six months ended January 28, 2017, respectively, and $1 and $4 for the corresponding periods of fiscal 2016, respectively	(1)	(19)	(44)	(20)
Net (gains) losses reclassified into earnings, net of tax (benefit) expense of $(2) and $(3) for the three and six months ended January 28, 2017, respectively, and $(1) and $(2) for the corresponding periods of fiscal 2016, respectively	25	4	36	6
Total- Cash flow hedging instruments	24	(15)	(8)	(14)
Net change in cumulative translation adjustment and actuarial gains and losses net of tax benefit (expense) of $0 and $(1) for the three and six months ended January 28, 2017, respectively, and $5 and $(34) for the corresponding periods of fiscal 2016, respectively	(44)	(341)	(71)	(557)
Other comprehensive income (loss)	(277)	(556)	(467)	(870)
Comprehensive income	2,071	2,591	4,203	4,707
Comprehensive (income) loss attributable to noncontrolling interests	0	1	(8)	2
Comprehensive income attributable to Cisco Systems, Inc.	$ 2,071	$ 2,592	$ 4,195	$ 4,709

Consolidated Statements Of Com6

Consolidated Statements Of Comprehensive Income (Parenthetical) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jan. 28, 2017	Jan. 23, 2016	Jan. 28, 2017	Jan. 23, 2016
Statement of Comprehensive Income [Abstract]
Change in net unrealized gains, tax benefit (expense)	$ 73	$ 149	$ 154	$ 205
Net (gains) losses reclassified into earnings, tax expense (benefit)	(11)	(7)	(6)	(7)
Change in unrealized gains and losses, tax benefit (expense)	1	1	4	4
Net (gains) losses reclassified into earnings, tax expense (benefit)	(2)	(1)	(3)	(2)
Net change in cumulative translation adjustment and actuarial gains and losses, tax benefit (expense)	$ 0	$ 5	$ (1)	$ (34)

Consolidated Statements Of Cash

Consolidated Statements Of Cash Flows - USD ($) $ in Millions	6 Months Ended
	Jan. 28, 2017	Jan. 23, 2016
Cash flows from operating activities:
Net income	$ 4,670	$ 5,577
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation, amortization, and other	1,148	1,005
Share-based compensation expense	724	706
Provision for receivables	4	31
Deferred income taxes	(26)	274
Excess tax benefits from share-based compensation	(101)	(82)
(Gains) losses on divestitures, investments and other, net	79	(260)
Change in operating assets and liabilities, net of effects of acquisitions and divestitures:
Accounts receivable	1,396	988
Inventories	(51)	153
Financing receivables	(764)	(171)
Other assets	155	(181)
Accounts payable	(98)	(147)
Income taxes, net	(257)	(764)
Accrued compensation	(417)	(348)
Deferred revenue	611	69
Other liabilities	(571)	(162)
Net cash provided by operating activities	6,502	6,688
Cash flows from investing activities:
Purchases of investments	(27,847)	(19,089)
Proceeds from sales of investments	18,420	10,247
Proceeds from maturities of investments	5,245	7,955
Acquisition of businesses, net of cash and cash equivalents acquired	(251)	(1,089)
Proceeds from business divestiture	0	372
Purchases of investments in privately held companies	(142)	(166)
Return of investments in privately held companies	108	35
Acquisition of property and equipment	(526)	(576)
Proceeds from sales of property and equipment	5	11
Other	10	(87)
Net cash used in investing activities	(4,978)	(2,387)
Cash flows from financing activities:
Issuances of common stock	386	701
Repurchases of common stock—repurchase program	(1,991)	(2,344)
Shares repurchased for tax withholdings on vesting of restricted stock units	(432)	(412)
Short-term borrowings, original maturities less than 90 days, net	300	(4)
Issuances of debt	6,232	0
Repayments of debt	(1)	(862)
Excess tax benefits from share-based compensation	101	82
Dividends paid	(2,612)	(2,133)
Other	(240)	108
Net cash provided by (used in) financing activities	1,743	(4,864)
Net increase (decrease) in cash and cash equivalents	3,267	(563)
Cash and cash equivalents, beginning of period	7,631	6,877
Cash and cash equivalents, end of period	10,898	6,314
Supplemental cash flow information:
Cash paid for interest	419	426
Cash paid for income taxes, net	$ 1,529	$ 1,355

Consolidated Statements Of Equi

Consolidated Statements Of Equity - USD ($) shares in Millions, $ 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. 25, 2015		5,085
Beginning balance at Jul. 25, 2015	$ 59,707		$ 43,592	$ 16,045	$ 61	$ 59,698	$ 9
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	5,577			5,577		5,577
Other comprehensive income (loss)	(870)				(868)	(868)	(2)
Issuance of common stock (in shares)		76
Issuance of common stock	701		701			701
Repurchase of common stock (in shares)		(93)
Repurchase of common stock	$ (2,469)		(801)	(1,668)		(2,469)
Shares repurchased for tax withholdings on vesting of restricted stock units (in shares)	(16)	(16)
Shares repurchased for tax withholdings on vesting of restricted stock units	$ (412)		(412)			(412)
Cash dividends declared (per common share)	(2,133)			(2,133)		(2,133)
Tax effects from employee stock incentive plans	28		28			28
Share-based compensation	706		706			706
Purchase acquisitions and other	43		43			43
Ending Balance (in shares) at Jan. 23, 2016		5,052
Ending Balance at Jan. 23, 2016	60,878		43,857	17,821	(807)	60,871	7
Beginning balance (in shares) at Jul. 30, 2016		5,029
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	4,670			4,670		4,670
Other comprehensive income (loss)	(467)				(475)	(475)	8
Issuance of common stock (in shares)		57
Issuance of common stock	$ 386		386			386
Repurchase of common stock (in shares)	(65)	(65)
Repurchase of common stock	$ (2,002)		(575)	(1,427)		(2,002)
Shares repurchased for tax withholdings on vesting of restricted stock units (in shares)	(14)	(14)
Shares repurchased for tax withholdings on vesting of restricted stock units	$ (432)		(432)			(432)
Cash dividends declared (per common share)	(2,612)			(2,612)		(2,612)
Tax effects from employee stock incentive plans	(54)		(54)			(54)
Share-based compensation	738		738			738
Purchase acquisitions and other	6		6			6
Ending Balance (in shares) at Jan. 28, 2017		5,007
Ending Balance at Jan. 28, 2017	$ 63,818		$ 44,585	$ 20,027	$ (801)	$ 63,811	$ 7

Consolidated Statements Of Equ9

Consolidated Statements Of Equity (Parenthetical) - $ / shares	6 Months Ended
	Jan. 28, 2017	Jan. 23, 2016
Statement of Stockholders' Equity [Abstract]
Cash dividends declared (in dollars per share)	$ 0.52	$ 0.42

Supplemental Information

Supplemental Information	6 Months Ended
	Jan. 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 January 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 4,656 $ 24,470 $ 74,129 $ 98,599

Basis of Presentation

Basis of Presentation	6 Months Ended
	Jan. 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 2017 is a 52-week fiscal year, and fiscal 2016 was a 53-week fiscal year. 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 January 28, 2017 and for the three and six months ended January 28, 2017 and January 23, 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 30, 2016 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 30, 2016 . 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 January 28, 2017 ; the results of operations and the statements of comprehensive income for the three and six months ended January 28, 2017 and January 23, 2016 ; and the statements of cash flows and equity for the six months ended January 28, 2017 and January 23, 2016 , as applicable, have been made. The results of operations for the three and six months ended January 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	6 Months Ended
	Jan. 28, 2017
Accounting Policies [Abstract]
Recent Accounting Pronouncements	Recent Accounting Pronouncements (a) New Accounting Updates Recently Adopted Consolidation of Certain Types of Legal Entities In February 2015, the FASB issued an accounting standard update that changes the analysis that a reporting entity must perform to determine whether it should consolidate certain types of legal entities. The accounting standard update became effective for the Company beginning in the first quarter of fiscal 2017. The application of this accounting standard update did not have any impact on the Company's Consolidated Balance Sheet or Statement of Operations upon adoption, but the Company has provided additional disclosures in Note 8 pursuant to this accounting standard update. (b) Recent Accounting Standards or Updates Not Yet Effective Revenue Recognition In May 2014, the Financial Accounting Standards Board ("FASB") issued an accounting standard update related to revenue from contracts with customers, which, along with amendments issued in 2015 and 2016, will supersede nearly all current U.S. GAAP guidance on this topic and eliminate industry-specific guidance. The underlying principle is to recognize revenue when promised goods or services are transferred to customers in an amount that reflects the consideration that is expected to be received for those goods or services. This accounting standard update, as amended, will be effective for the Company beginning in the first quarter of fiscal 2019. The new revenue standard may be applied retrospectively to each prior period presented or retrospectively with the cumulative effect recognized in retained earnings as of the date of adoption ("modified retrospective basis"). Early adoption is permitted, but no earlier than fiscal 2018. The Company expects to adopt this accounting standard update on a modified retrospective basis in the first quarter of fiscal 2019, and it is currently evaluating the impact of this accounting standard update on its Consolidated Financial Statements. 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 the Company beginning in the first quarter of fiscal 2019, and early adoption is permitted. The Company is currently evaluating the impact of this accounting standard update on its Consolidated Financial Statements. 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 the Company beginning in the first quarter of fiscal 2020 on a modified retrospective basis, and early adoption is permitted. The Company is currently evaluating the impact of this accounting standard update on its Consolidated Financial Statements. 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. The accounting standard will be effective for the Company beginning the first quarter of fiscal 2018, and early adoption is permitted. The Company 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 the Company beginning in the first quarter of fiscal 2021 on a modified retrospective basis, and early adoption in fiscal 2020 is permitted. The Company is currently evaluating the impact of this accounting standard update on its Consolidated Financial Statements. C lassification 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 the Company beginning in the first quarter of fiscal 2019 on a retrospective basis, and early adoption is permitted. The Company 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 the Company beginning in the first quarter of fiscal 2019 on a modified retrospective basis, and early adoption is permitted. The Company 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 the Company beginning in the first quarter of fiscal 2019 using a retrospective transition method to each period presented, and early adoption is permitted. The Company 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 the Company beginning in the first quarter of fiscal 2019 on a prospective basis. The impact of this accounting standard update will be facts and circumstances dependent, but the Company expects that in some situations 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 the Company beginning in the first quarter of fiscal 2021 on a prospective basis, and early adoption is permitted. The Company does not expect that this accounting standard update will impact its Consolidated Financial Statements.

Acquisitions and Divestitures

Acquisitions and Divestitures	6 Months Ended
	Jan. 28, 2017
Business Combinations [Abstract]
Acquisitions and Divestitures	Acquisitions and Divestitures The Company completed three acquisitions during the six months ended January 28, 2017 . A summary of the allocation of the total purchase consideration is presented as follows (in millions): Purchase Consideration Purchased Intangible Assets Goodwill CloudLock $ 249 $ 36 $ 213 Others (two in total) 9 5 4 Total $ 258 $ 41 $ 217 On August 1, 2016 , the Company completed its acquisition of privately held CloudLock Inc. ("CloudLock"), a provider of cloud security that specializes in cloud access security broker technology that provides enterprises with visibility and analytics around user behavior and sensitive data in cloud services. Revenue from the CloudLock acquisition has been included in the Company's Security product category. The total purchase consideration related to the Company’s acquisitions completed during the six months ended January 28, 2017 consisted of cash consideration and vested share-based awards assumed. The total cash and cash equivalents acquired from these acquisitions was approximately $1 million . Total transaction costs related to the Company’s acquisition activities were $3 million and $14 million for the six months ended January 28, 2017 and January 23, 2016 , respectively. These transaction costs were expensed as incurred in general and administrative expenses ("G&A") in the Consolidated Statements of Operations. The Company’s 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 the Company’s acquisitions completed during the six months ended January 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 six months ended January 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 AppDynamics On January 24, 2017 , the Company announced its intent to acquire privately held AppDynamics, Inc. ("AppDynamics"), an application intelligence software company. AppDynamics's cloud application and business monitoring platform is designed to enable companies to improve application and business performance. Under the terms of the agreement, the Company will pay approximately $3.7 billion in cash and assumed equity awards to acquire AppDynamics. With the AppDynamics acquisition, the Company seeks to provide end-to-end visibility and intelligence from the customers' network through to the application. The acquisition is expected to close in the third quarter of fiscal 2017 .

Goodwill and Purchased Intangib

Goodwill and Purchased Intangible Assets	6 Months Ended
	Jan. 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 six months ended January 28, 2017 (in millions): Balance at Balance at July 30, 2016 Acquisitions Other January 28, 2017 Americas $ 16,529 $ 132 $ (16 ) $ 16,645 EMEA 6,269 62 (3 ) 6,328 APJC 3,827 23 (1 ) 3,849 Total $ 26,625 $ 217 $ (20 ) $ 26,822 “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 six months ended January 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 CloudLock 6.0 $ 32 4.0 $ 3 1.5 $ 1 $ — $ 36 Others (two in total) 3.0 5 0.0 — 0.0 — — 5 Total $ 37 $ 3 $ 1 $ — $ 41 The following tables present details of the Company’s purchased intangible assets (in millions): January 28, 2017 Gross Accumulated Amortization Net Purchased intangible assets with finite lives: Technology $ 2,900 $ (1,440 ) $ 1,460 Customer relationships 1,303 (846 ) 457 Other 57 (25 ) 32 Total purchased intangible assets with finite lives 4,260 (2,311 ) 1,949 In-process research and development, with indefinite lives 168 — 168 Total $ 4,428 $ (2,311 ) $ 2,117 July 30, 2016 Gross Accumulated Amortization Net Purchased intangible assets with finite lives: Technology $ 3,038 $ (1,391 ) $ 1,647 Customer relationships 1,793 (1,203 ) 590 Other 85 (43 ) 42 Total purchased intangible assets with finite lives 4,916 (2,637 ) 2,279 In-process research and development, with indefinite lives 222 — 222 Total $ 5,138 $ (2,637 ) $ 2,501 Purchased intangible assets include intangible assets acquired through acquisitions as well as through direct purchases or licenses. Impairment charges related to purchased intangible assets for the three and six months ended January 28, 2017 were zero and $42 million , 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 was recorded to restructuring and other charges in connection with the Company's decision to exit certain product lines, and the corresponding elimination of future associated cash flows. Impairment charges related to purchased intangible assets for the three and six months ended January 23, 2016 were $37 million . The following table presents the amortization of purchased intangible assets, including impairment charges (in millions): Three Months Ended Six Months Ended January 28, 2017 January 23, 2016 January 28, 2017 January 23, 2016 Amortization of purchased intangible assets: Cost of sales $ 124 $ 139 $ 253 $ 285 Operating expenses Amortization of purchased intangible assets 64 71 142 140 Restructuring and other charges — — 38 — Total $ 188 $ 210 $ 433 $ 425 The estimated future amortization expense of purchased intangible assets with finite lives as of January 28, 2017 is as follows (in millions): Fiscal Year Amount 2017 (remaining six months) $ 343 2018 591 2019 505 2020 292 2021 148 Thereafter 70 Total $ 1,949

Restructuring and Other Charges

Restructuring and Other Charges	6 Months Ended
	Jan. 28, 2017
Restructuring Charges [Abstract]
Restructuring and Other Charges	Restructuring and Other Charges In August 2016, the Company announced a restructuring plan (the "Fiscal 2017 Plan") in order to reinvest in its key priority areas such as security, the Internet of Things (IoT), collaboration, next generation data center and cloud. In connection with this plan, the Company expects that up to 5,500 employees will be impacted, representing approximately 7% of its global workforce. The Company's aggregate pretax estimated charges pursuant to the restructuring plan are expected to be approximately $700 million , consisting primarily of severance and other one-time termination benefits, and other associated costs. These charges are primarily cash-based, and the Company expects the Fiscal 2017 Plan to be substantially completed by the end of fiscal 2017. The Company incurred charges of $133 million , and $95 million , net of a $1 million credit to cost of sales for the three months ended January 28, 2017 and January 23, 2016 , respectively, and $544 million and $236 million , net of a $2 million credit to cost of sales for the six months ended January 28, 2017 and January 23, 2016 , respectively. In connection with a restructuring action announced in August 2014 (the “Fiscal 2015 Plan”), the Company incurred cumulative charges of approximately $756 million . The Company completed the Fiscal 2015 Plan in fiscal 2016. The following tables summarize the activities related to the restructuring and other charges (in millions): FISCAL 2015 AND PRIOR PLANS FISCAL 2017 PLAN Employee Severance Other Employee Severance Other Total Liability as of July 30, 2016 $ 21 $ 24 $ — $ — $ 45 Charges — — 452 92 544 Cash payments (13 ) (4 ) (368 ) (3 ) (388 ) Non-cash items (4 ) (9 ) (2 ) (58 ) (73 ) Liability as of January 28, 2017 $ 4 $ 11 $ 82 $ 31 $ 128 FISCAL 2015 AND PRIOR PLANS Employee Severance Other Total Liability as of July 25, 2015 $ 60 $ 29 $ 89 Charges 206 32 238 Cash payments (187 ) (10 ) (197 ) Non-cash items — (21 ) (21 ) Liability as of January 23, 2016 $ 79 $ 30 $ 109

Balance Sheet Details

Balance Sheet Details	6 Months Ended
	Jan. 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): January 28, July 30, Inventories: Raw materials $ 149 $ 91 Work in process 1 — Finished goods: Distributor inventory and deferred cost of sales 422 457 Manufactured finished goods 413 415 Total finished goods 835 872 Service-related spares 260 236 Demonstration systems 19 18 Total $ 1,264 $ 1,217 Property and equipment, net: Gross property and equipment: Land, buildings, and building and leasehold improvements $ 4,800 $ 4,778 Computer equipment and related software 1,301 1,288 Production, engineering, and other equipment 5,680 5,658 Operating lease assets 297 296 Furniture and fixtures 560 543 Total gross property and equipment 12,638 12,563 Less: accumulated depreciation and amortization (9,216 ) (9,057 ) Total $ 3,422 $ 3,506 Deferred revenue: Service $ 10,525 $ 10,621 Product: Deferred revenue related to recurring software and subscription businesses 3,997 3,308 Deferred revenue related to two-tier distributors 401 377 Other product deferred revenue 2,163 2,166 Total product deferred revenue 6,561 5,851 Total $ 17,086 $ 16,472 Reported as: Current $ 10,243 $ 10,155 Noncurrent 6,843 6,317 Total $ 17,086 $ 16,472

Financing Receivables and Opera

Financing Receivables and Operating Leases	6 Months Ended
	Jan. 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 and other. 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. Loan receivables represent financing arrangements related to the sale of the Company’s products and services, which may include additional funding for other costs associated with network installation and integration of the Company’s products and services. Lease receivables consist of arrangements with terms of four years on average, while loan receivables generally have terms of up to three years . The financed service contracts and other category includes financing receivables related to technical support and advanced services, software, and receivables related to financing of certain indirect costs associated with leases. 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): January 28, 2017 Lease Receivables Loan Receivables Financed Service Contracts and Other Total Gross $ 2,967 $ 2,369 $ 4,165 $ 9,501 Residual value 191 — — 191 Unearned income (154 ) — — (154 ) Allowance for credit loss (225 ) (106 ) (47 ) (378 ) Total, net $ 2,779 $ 2,263 $ 4,118 $ 9,160 Reported as: Current $ 1,419 $ 1,040 $ 2,037 $ 4,496 Noncurrent 1,360 1,223 2,081 4,664 Total, net $ 2,779 $ 2,263 $ 4,118 $ 9,160 July 30, 2016 Lease Receivables Loan Receivables Financed Service Contracts and Other Total Gross $ 3,272 $ 2,135 $ 3,370 $ 8,777 Residual value 202 — — 202 Unearned income (174 ) — — (174 ) Allowance for credit loss (230 ) (97 ) (48 ) (375 ) Total, net $ 3,070 $ 2,038 $ 3,322 $ 8,430 Reported as: Current $ 1,490 $ 988 $ 1,794 $ 4,272 Noncurrent 1,580 1,050 1,528 4,158 Total, net $ 3,070 $ 2,038 $ 3,322 $ 8,430 As of January 28, 2017 and July 30, 2016 , the deferred service revenue related to "Financed Service Contracts and Other" was $1,922 million and $1,716 million , respectively. Future minimum lease payments to the Company on lease receivables as of January 28, 2017 are summarized as follows (in millions): Fiscal Year Amount 2017 (remaining six months) $ 768 2018 1,141 2019 656 2020 300 2021 95 Thereafter 7 Total $ 2,967 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 January 28, 2017 and July 30, 2016 are summarized as follows (in millions): INTERNAL CREDIT RISK RATING January 28, 2017 1 to 4 5 to 6 7 and Higher Total Lease receivables $ 1,505 $ 1,209 $ 99 $ 2,813 Loan receivables 1,259 934 176 2,369 Financed service contracts and other 2,756 1,355 54 4,165 Total $ 5,520 $ 3,498 $ 329 $ 9,347 INTERNAL CREDIT RISK RATING July 30, 2016 1 to 4 5 to 6 7 and Higher Total Lease receivables $ 1,703 $ 1,294 $ 101 $ 3,098 Loan receivables 986 967 182 2,135 Financed service contracts and other 2,077 1,271 22 3,370 Total $ 4,766 $ 3,532 $ 305 $ 8,603 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 and other. 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. Total allowances for credit loss and deferred revenue as of January 28, 2017 and July 30, 2016 were $2,327 million and $2,112 million , respectively, and they were associated with total financing receivables before allowances for credit loss of $9,538 million and $8,805 million as of their respective period ends. The following tables present the aging analysis of gross receivables, excluding residual value and less unearned income as of January 28, 2017 and July 30, 2016 (in millions): DAYS PAST DUE (INCLUDES BILLED AND UNBILLED) January 28, 2017 31-60 61-90 91+ Total Past Due Current Total Nonaccrual Financing Receivables Impaired Financing Receivables Lease receivables $ 106 $ 55 $ 237 $ 398 $ 2,415 $ 2,813 $ 66 $ 66 Loan receivables 34 24 67 125 2,244 2,369 56 56 Financed service contracts and other 111 225 494 830 3,335 4,165 29 9 Total $ 251 $ 304 $ 798 $ 1,353 $ 7,994 $ 9,347 $ 151 $ 131 DAYS PAST DUE (INCLUDES BILLED AND UNBILLED) July 30, 2016 31-60 61-90 91+ Total Past Due Current Total Nonaccrual Financing Receivables Impaired Financing Receivables Lease receivables $ 111 $ 25 $ 251 $ 387 $ 2,711 $ 3,098 $ 60 $ 60 Loan receivables 30 9 37 76 2,059 2,135 42 42 Financed service contracts and other 213 152 565 930 2,440 3,370 30 10 Total $ 354 $ 186 $ 853 $ 1,393 $ 7,210 $ 8,603 $ 132 $ 112 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 $444 million and $670 million as of January 28, 2017 and July 30, 2016 , respectively. As of January 28, 2017 , the Company had financing receivables of $316 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 $144 million as of July 30, 2016 . (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 Three months ended January 28, 2017 Lease Loan Financed Service Total Allowance for credit loss as of October 29, 2016 $ 227 $ 111 $ 48 $ 386 Provisions 2 — (1 ) 1 Recoveries (write-offs), net (2 ) (4 ) — (6 ) Foreign exchange and other (2 ) (1 ) — (3 ) Allowance for credit loss as of January 28, 2017 $ 225 $ 106 $ 47 $ 378 CREDIT LOSS ALLOWANCES Six months ended January 28, 2017 Lease Loan Financed Service Total Allowance for credit loss as of July 30, 2016 $ 230 $ 97 $ 48 $ 375 Provisions (2 ) 12 (1 ) 9 Recoveries (write-offs), net (2 ) (4 ) — (6 ) Foreign exchange and other (1 ) 1 — — Allowance for credit loss as of January 28, 2017 $ 225 $ 106 $ 47 $ 378 CREDIT LOSS ALLOWANCES Three months ended January 23, 2016 Lease Loan Financed Service Total Allowance for credit loss as of October 24, 2015 $ 255 $ 90 $ 33 $ 378 Provisions (4 ) (10 ) 5 (9 ) Recoveries (write-offs), net — — (1 ) (1 ) Foreign exchange and other (3 ) — — (3 ) Allowance for credit loss as of January 23, 2016 $ 248 $ 80 $ 37 $ 365 CREDIT LOSS ALLOWANCES Six months ended January 23, 2016 Lease Loan Financed Service Total Allowance for credit loss as of July 25, 2015 $ 259 $ 87 $ 36 $ 382 Provisions (4 ) (6 ) 5 (5 ) Recoveries (write-offs), net (4 ) — (4 ) (8 ) Foreign exchange and other (3 ) (1 ) — (4 ) Allowance for credit loss as of January 23, 2016 $ 248 $ 80 $ 37 $ 365 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 January 28, 2017 and July 30, 2016 , 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): January 28, 2017 July 30, 2016 Operating lease assets $ 297 $ 296 Accumulated depreciation (169 ) (161 ) Operating lease assets, net $ 128 $ 135 Minimum future rentals on noncancelable operating leases as of January 28, 2017 are summarized as follows (in millions): Fiscal Year Amount 2017 (remaining six months) $ 123 2018 168 2019 76 2020 14 2021 5 Thereafter 2 Total $ 388

Investments

Investments	6 Months Ended
	Jan. 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): January 28, 2017 Amortized Cost Gross Unrealized Gains Gross Unrealized Losses Fair Value Fixed income securities: U.S. government securities $ 22,910 $ 4 $ (82 ) $ 22,832 U.S. government agency securities 2,401 1 (5 ) 2,397 Non-U.S. government and agency securities 1,211 — (6 ) 1,205 Corporate debt securities 30,878 85 (265 ) 30,698 U.S. agency mortgage-backed securities 2,031 2 (27 ) 2,006 Commercial paper 195 — — 195 Total fixed income securities 59,626 92 (385 ) 59,333 Publicly traded equity securities 1,225 463 (74 ) 1,614 Total (1) $ 60,851 $ 555 $ (459 ) $ 60,947 July 30, 2016 Amortized Cost Gross Unrealized Gains Gross Unrealized Losses Fair Value Fixed income securities: U.S. government securities $ 26,473 $ 73 $ (2 ) $ 26,544 U.S. government agency securities 2,809 8 — 2,817 Non-U.S. government and agency securities 1,096 4 — 1,100 Corporate debt securities 24,044 263 (15 ) 24,292 U.S. agency mortgage-backed securities 1,846 22 — 1,868 Total fixed income securities 56,268 370 (17 ) 56,621 Publicly traded equity securities 1,211 333 (40 ) 1,504 Total (1) $ 57,479 $ 703 $ (57 ) $ 58,125 (1) Includes investments that were pending settlement as of the respective fiscal years. The net unsettled investment purchases were $6 million and $654 million as of January 28, 2017 and July 30, 2016 , 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 the Company’s available-for-sale investments (in millions): Three Months Ended Six Months Ended January 28, 2017 January 23, 2016 January 28, 2017 January 23, 2016 Gross realized gains $ 18 $ 16 $ 48 $ 51 Gross realized losses (48 ) (35 ) (63 ) (71 ) Total $ (30 ) $ (19 ) $ (15 ) $ (20 ) The following table presents the realized net gains (losses) related to the Company’s available-for-sale investments by security type (in millions): Three Months Ended Six Months Ended January 28, 2017 January 23, 2016 January 28, 2017 January 23, 2016 Net gains (losses) on investments in publicly traded equity securities $ 4 $ 2 $ 9 $ (7 ) Net gains (losses) on investments in fixed income securities (34 ) (21 ) (24 ) (13 ) Total $ (30 ) $ (19 ) $ (15 ) $ (20 ) 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 January 28, 2017 and July 30, 2016 (in millions): UNREALIZED LOSSES LESS THAN 12 MONTHS UNREALIZED LOSSES 12 MONTHS OR GREATER TOTAL January 28, 2017 Fair Value Gross Unrealized Losses Fair Value Gross Unrealized Losses Fair Value Gross Unrealized Losses Fixed income securities: U.S. government securities $ 16,303 $ (82 ) $ 16 $ — $ 16,319 $ (82 ) U.S. government agency securities 1,430 (5 ) — — 1,430 (5 ) Non-U.S. government and agency securities 1,107 (6 ) 6 — 1,113 (6 ) Corporate debt securities 15,180 (264 ) 325 (1 ) 15,505 (265 ) U.S. agency mortgage-backed securities 1,780 (27 ) — — 1,780 (27 ) Total fixed income securities 35,800 (384 ) 347 (1 ) 36,147 (385 ) Publicly traded equity securities 63 (6 ) 94 (68 ) 157 (74 ) Total $ 35,863 $ (390 ) $ 441 $ (69 ) $ 36,304 $ (459 ) UNREALIZED LOSSES LESS THAN 12 MONTHS UNREALIZED LOSSES 12 MONTHS OR GREATER TOTAL July 30, 2016 Fair Value Gross Unrealized Losses Fair Value Gross Unrealized Losses Fair Value Gross Unrealized Losses Fixed income securities: U.S. government securities $ 2,414 $ (2 ) $ — $ — $ 2,414 $ (2 ) U.S. government agency securities 144 — — — 144 — Non-U.S. government and agency securities 61 — — — 61 — Corporate debt securities 2,499 (7 ) 1,208 (8 ) 3,707 (15 ) U.S. agency mortgage-backed securities 174 — — — 174 — Total fixed income securities 5,292 (9 ) 1,208 (8 ) 6,500 (17 ) Publicly traded equity securities 188 (40 ) — — 188 (40 ) Total $ 5,480 $ (49 ) $ 1,208 $ (8 ) $ 6,688 $ (57 ) As of January 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 January 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 six months ended January 28, 2017 . The Company has evaluated its publicly traded equity securities as of January 28, 2017 and has determined that there were no 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 January 28, 2017 (in millions): Amortized Cost Fair Value Less than 1 year $ 12,678 $ 12,681 Due in 1 to 2 years 16,678 16,667 Due in 2 to 5 years 24,535 24,407 Due after 5 years 3,704 3,572 Mortgage-backed securities with no single maturity 2,031 2,006 Total $ 59,626 $ 59,333 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 six months ended January 28, 2017 and January 23, 2016 was $1.5 billion and $0.6 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 January 28, 2017 and July 30, 2016 , the Company had no outstanding securities lending transactions. (e) Investments in Privately Held Companies The carrying value of the Company’s 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 January 28, 2017 and July 30, 2016 , the amounts are summarized in the following table (in millions): January 28, 2017 July 30, 2016 Equity method investments $ 176 $ 174 Cost method investments 831 829 Total $ 1,007 $ 1,003 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 January 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 discussed in Note 2, during the first quarter of fiscal 2017, the Company adopted a new accounting standard update related to the consolidation of certain types of legal entities. As of January 28, 2017 , the carrying value of the Company's investments in privately held companies was $1,007 million , of which $580 million of such investments are considered to be in variable interest entities which are unconsolidated. In addition, the Company has additional funding commitments of $182 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	6 Months Ended
	Jan. 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 January 28, 2017 and July 30, 2016 were as follows (in millions): JANUARY 28, 2017 JULY 30, 2016 Level 1 Level 2 Level 3 Total Balance Level 1 Level 2 Level 3 Total Balance Assets: Cash equivalents: U.S. government securities $ — $ 50 $ — $ 50 $ — $ — $ — $ — Corporate debt securities — — — — — 43 — 43 Money market funds 8,635 — — 8,635 6,049 — — 6,049 Commercial paper — 276 — 276 — — — — Certificates of deposit — 30 — 30 — — — — Available-for-sale investments: U.S. government securities — 22,832 — 22,832 — 26,544 — 26,544 U.S. government agency securities — 2,397 — 2,397 — 2,817 — 2,817 Non-U.S. government and agency securities — 1,205 — 1,205 — 1,100 — 1,100 Corporate debt securities — 30,698 — 30,698 — 24,292 — 24,292 U.S. agency mortgage-backed securities — 2,006 — 2,006 — 1,868 — 1,868 Publicly traded equity securities 1,614 — — 1,614 1,504 — — 1,504 Commercial paper — 195 — 195 — — — — Derivative assets — 118 — 118 — 384 1 385 Total $ 10,249 $ 59,807 $ — $ 70,056 $ 7,553 $ 57,048 $ 1 $ 64,602 Liabilities: Derivative liabilities $ — $ 59 $ — $ 59 $ — $ 54 $ — $ 54 Total $ — $ 59 $ — $ 59 $ — $ 54 $ — $ 54 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 TOTAL GAINS (LOSSES) FOR THE SIX MONTHS ENDED January 28, 2017 January 23, 2016 January 28, 2017 January 23, 2016 Investments in privately held companies (impaired) $ (64 ) $ (39 ) $ (111 ) $ (56 ) Purchased intangible assets (impaired) — (37 ) (42 ) (37 ) Property held for sale—land and buildings (24 ) — (24 ) — Total gains (losses) for nonrecurring measurements $ (88 ) $ (76 ) $ (177 ) $ (93 ) 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 $44 million and $11 million as of January 28, 2017 and January 23, 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 $9 million and zero as of January 28, 2017 and January 23, 2016 . The fair value of property held for sale was measured with the assistance of third-party valuation models, which used discounted cash flow techniques as part of their analysis. The fair value measurement was categorized as Level 3, as significant unobservable inputs were used in the valuation report. The impairment charge as a result of the valuations, which represented the difference between the fair value less cost to sell and the carrying amount of the assets held for sale, was included in restructuring and other charges. The remaining carrying value of the property held for sale that was impaired was $11 million as of January 28, 2017 . (d) Other Fair Value Disclosures The carrying value of the Company’s investments in privately held companies that were accounted for under the cost method was $831 million and $829 million as of January 28, 2017 and July 30, 2016 , respectively. It was not practicable to estimate the fair value of this portfolio. The fair value of the Company’s short-term loan receivables and financed service contracts approximates their carrying value due to their short duration. The aggregate carrying value of the Company’s long-term loan receivables and financed service contracts and other as of January 28, 2017 and July 30, 2016 was $3.3 billion and $2.6 billion , respectively. The estimated fair value of the Company’s long-term loan receivables and financed service contracts and other 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 January 28, 2017 , the estimated fair value of the short-term debt approximates its carrying value due to the short maturities. As of January 28, 2017 , the fair value of the Company’s senior notes and other long-term debt was $35.9 billion with a carrying amount of $34.6 billion . This compares to a fair value of $30.9 billion and a carrying amount of $28.6 billion as of July 30, 2016 . 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	6 Months Ended
	Jan. 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): January 28, 2017 July 30, 2016 Amount Effective Rate Amount Effective Rate Current portion of long-term debt $ 4,151 1.26 % $ 4,159 0.97 % Commercial paper 300 0.73 % — — Other notes and borrowings — — 1 2.08 % Total short-term debt $ 4,451 $ 4,160 The effective interest rate on the current portion of long-term debt includes the impact of interest rate swaps, as discussed further in "(b) Long-Term Debt." Other notes and borrowings consist of the short-term portion of secured borrowings associated with customer financing arrangements. These notes and credit facilities were subject to various terms and foreign currency market interest rates pursuant to individual financial arrangements between the financing institution and the applicable foreign subsidiary. The Company has established a short-term debt financing program of up to $3.0 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 Company had $300 million and no commercial paper notes outstanding as of January 28, 2017 and July 30, 2016 , respectively. (b) Long-Term Debt The following table summarizes the Company’s long-term debt (in millions, except percentages): January 28, 2017 July 30, 2016 Maturity Date Amount Effective Rate Amount Effective Rate Senior notes: Floating-rate notes: Three-month LIBOR plus 0.28% March 3, 2017 $ 1,000 1.29% $ 1,000 1.03% Three-month LIBOR plus 0.60% February 21, 2018 1,000 1.58% 1,000 1.32% Three-month LIBOR plus 0.31% June 15, 2018 900 1.34% 900 1.03% Three-month LIBOR plus 0.50% March 1, 2019 500 1.49% 500 1.23% Three-month LIBOR plus 0.34% September 20, 2019 (1) 500 1.38% — — Fixed-rate notes: 1.10% March 3, 2017 2,400 1.17% 2,400 0.87% 3.15% March 14, 2017 750 1.52% 750 1.22% 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 4.84% 2,000 4.76% 1.60% February 28, 2019 1,000 1.67% 1,000 1.67% 2.125% March 1, 2019 1,750 1.39% 1,750 1.08% 1.40% September 20, 2019 (1) 1,500 1.48% — — 4.45% January 15, 2020 2,500 3.47% 2,500 3.25% 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 1.55% 500 1.24% 1.85% September 20, 2021 (1) 2,000 1.90% — — 3.00% June 15, 2022 500 1.80% 500 1.51% 2.60% February 28, 2023 500 2.68% 500 2.68% 2.20% September 20, 2023 (1) 750 2.27% — — 3.625% March 4, 2024 1,000 1.66% 1,000 1.36% 3.50% June 15, 2025 500 1.96% 500 1.67% 2.95% February 28, 2026 750 3.01% 750 3.01% 2.50% September 20, 2026 (1) 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 34,650 28,400 Unaccreted discount/issuance costs (145 ) (137 ) Hedge accounting fair value adjustments 117 379 Total $ 34,622 $ 28,642 Reported as: Current portion of long-term debt $ 4,151 $ 4,159 Long-term debt 30,471 24,483 Total $ 34,622 $ 28,642 (1) In September 2016, the Company issued senior notes for an aggregate principal amount of $6.25 billion . To achieve its interest rate risk management objectives, the Company entered into interest rate swaps in prior periods with an aggregate notional amount of $9.9 billion designated as fair value hedges of certain of its fixed-rate senior notes. In effect, 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. The effective rates for the fixed-rate debt include the interest on the notes, the accretion of the discount, and, if applicable, adjustments related to hedging. 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 may be issued in the future pursuant to the Company’s short-term debt financing program, as discussed above under “(a) Short-Term Debt.” As of January 28, 2017 , the Company was in compliance with all debt covenants. As of January 28, 2017 , future principal payments for long-term debt, including the current portion, are summarized as follows (in millions): Fiscal Year Amount 2017 (remaining six months) $ 4,150 2018 4,750 2019 5,250 2020 6,000 2021 3,000 Thereafter 11,500 Total $ 34,650 (c) Credit Facility 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 credit agreement requires the Company to comply with certain covenants, including that it maintains an interest coverage ratio as defined in the agreement. 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 . As of January 28, 2017 , the Company was in compliance with the required interest coverage ratio and the other covenants, and the Company had not borrowed any funds under the credit facility.

Derivative Instruments

Derivative Instruments	6 Months Ended
	Jan. 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 January 28, July 30, Balance Sheet Line Item January 28, July 30, Derivatives designated as hedging instruments: Foreign currency derivatives Other current assets $ 5 $ 7 Other current liabilities $ 58 $ 53 Interest rate derivatives Other current assets 2 11 Other current liabilities — — Interest rate derivatives Other assets 109 366 Other long-term liabilities — — Total 116 384 58 53 Derivatives not designated as hedging instruments: Foreign currency derivatives Other current assets 2 — Other current liabilities 1 1 Equity derivatives/warrants Other assets — 1 Other long-term liabilities — — Total 2 1 1 1 Total $ 118 $ 385 $ 59 $ 54 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) January 28, January 23, Line Item in Statements of Operations January 28, January 23, Derivatives designated as cash flow hedging instruments: Foreign currency derivatives $ (2 ) $ (20 ) Operating expenses $ (21 ) $ (4 ) Cost of sales — service (6 ) (1 ) Total $ (2 ) $ (20 ) $ (27 ) $ (5 ) Derivatives designated as net investment hedging instruments: Foreign currency derivatives $ (3 ) $ 11 Other income (loss), net $ — $ — GAINS (LOSSES) RECOGNIZED IN OCI ON DERIVATIVES FOR THE SIX MONTHS ENDED (EFFECTIVE PORTION) GAINS (LOSSES) RECLASSIFIED FROM AOCI INTO INCOME FOR THE SIX MONTHS ENDED (EFFECTIVE PORTION) January 28, January 23, Line Item in Statements of Operations January 28, January 23, Derivatives designated as cash flow hedging instruments: Foreign currency derivatives $ (48 ) $ (24 ) Operating expenses $ (30 ) $ (6 ) Cost of sales — service (9 ) (2 ) Total $ (48 ) $ (24 ) $ (39 ) $ (8 ) Derivatives designated as net investment hedging instruments: Foreign currency derivatives $ 6 $ 11 Other income (loss), net $ — $ — As of January 28, 2017 , the Company estimates that approximately $59 million of net derivative losses 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 January 28, January 23, January 28, January 23, Interest rate derivatives Interest expense $ (175 ) $ (16 ) $ 172 $ 18 GAINS (LOSSES) ON DERIVATIVE INSTRUMENTS FOR THE SIX MONTHS ENDED GAINS (LOSSES) RELATED TO HEDGED ITEMS FOR THE SIX MONTHS ENDED Derivatives Designated as Fair Value Hedging Instruments Line Item in Statements of Operations January 28, January 23, January 28, January 23, Interest rate derivatives Interest expense $ (266 ) $ 111 $ 262 $ (107 ) 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 GAINS (LOSSES) FOR THE SIX MONTHS ENDED Derivatives Not Designated as Hedging Instruments Line Item in Statements of Operations January 28, January 23, January 28, January 23, Foreign currency derivatives Other income (loss), net $ (20 ) $ (58 ) $ (36 ) $ (54 ) Total return swaps—deferred compensation Operating expenses 26 (38 ) 23 (54 ) Equity derivatives Other income (loss), net 8 3 9 13 Total $ 14 $ (93 ) $ (4 ) $ (95 ) The notional amounts of the Company’s outstanding derivatives are summarized as follows (in millions): January 28, July 30, Derivatives designated as hedging instruments: Foreign currency derivatives—cash flow hedges $ 2,142 $ 2,683 Interest rate derivatives 9,900 9,900 Net investment hedging instruments 236 298 Derivatives not designated as hedging instruments: Foreign currency derivatives 2,002 2,057 Total return swaps—deferred compensation 516 476 Total $ 14,796 $ 15,414 (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): January 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 $ 118 $ — $ 118 $ (21 ) $ (90 ) $ 7 Derivatives liabilities $ 59 $ — $ 59 $ (21 ) $ — $ 38 July 30, 2016 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 $ 385 $ — $ 385 $ (23 ) $ (305 ) $ 57 Derivatives liabilities $ 54 $ — $ 54 $ (23 ) $ — $ 31 (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 January 28, 2017 and July 30, 2016 , 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 six months ended January 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 2017 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	6 Months Ended
	Jan. 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 January 28, 2017 are as follows (in millions): Fiscal Year Amount 2017 (remaining six months) $ 213 2018 334 2019 208 2020 142 2021 83 Thereafter 175 Total $ 1,155 (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 January 28, 2017 and July 30, 2016 , the Company had total purchase commitments for inventory of $4,402 million and $3,896 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 January 28, 2017 and July 30, 2016 , the liability for these purchase commitments was $172 million and $159 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 Six Months Ended January 28, 2017 January 23, 2016 January 28, 2017 January 23, 2016 Compensation expense related to acquisitions $ 73 $ 71 $ 137 $ 144 As of January 28, 2017 , the Company estimated that future cash compensation expense of up to $220 million may be required to be recognized pursuant to the applicable business combination agreements, which included the remaining potential compensation expense related to Insieme Networks, Inc. ("Insieme"), as more fully discussed immediately below. Insieme Networks, Inc. In the third quarter of fiscal 2012, the Company made an investment in Insieme, an early stage company focused on research and development in the data center market. As set forth in the agreement between the Company and Insieme, this investment included $100 million of funding and a license to certain of the Company’s technology. Immediately prior to the call option exercise and acquisition described below, the Company owned approximately 83% of Insieme as a result of these investments and has consolidated the results of Insieme in its Consolidated Financial Statements. In connection with this investment, the Company and Insieme entered into a put/call option agreement that provided the Company with the right to purchase the remaining interests in Insieme. In addition, the noncontrolling interest holders could require the Company to purchase their shares upon the occurrence of certain events. During the first quarter of fiscal 2014, the Company exercised its call option and entered into an agreement to purchase the remaining interests in Insieme. The acquisition closed in the second quarter of fiscal 2014, at which time the former noncontrolling interest holders became eligible to receive up to two milestone payments, which will be determined using agreed-upon formulas based primarily on revenue for certain of Insieme’s products. The Company recorded compensation expense of $12 million and $50 million during the three months ended January 28, 2017 and January 23, 2016 , respectively, and $32 million and $101 million during the six months ended January 28, 2017 and January 23, 2016 , respectively, related to the fair value of the vested portion of amounts that were earned or are expected to be earned by the former noncontrolling interest holders. Continued vesting will result in additional compensation expense in future periods. Based on the terms of the agreement, the Company has determined that the maximum amount that could be recorded as compensation expense by the Company is approximately $831 million (which includes the $815 million that has been expensed to date), net of forfeitures. The former noncontrolling interest holders earned the maximum amount related to these two milestone payments and were paid approximately $422 million and $354 million during the six months ended January 28, 2017 and January 23, 2016 , respectively. As of January 28, 2017 , the Company paid a total of approximately $811 million pursuant to these two milestone payments. (d) Product Warranties The following table summarizes the activity related to the product warranty liability (in millions): Six Months Ended January 28, January 23, Balance at beginning of period $ 414 $ 449 Provisions for warranty issued 367 335 Adjustments for pre-existing warranties (3 ) (13 ) Settlements (352 ) (340 ) Divestitures — (28 ) Balance at end of period $ 426 $ 403 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 $6.3 billion and $6.5 billion for the three months ended January 28, 2017 and January 23, 2016 , respectively, and was $13.2 billion and $13.4 billion for the six months ended January 28, 2017 and January 23, 2016 , respectively. The balance of the channel partner financing subject to guarantees was $1.2 billion and $1.1 billion as of January 28, 2017 and July 30, 2016 , respectively. 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 $30 million and $16 million for the three months ended January 28, 2017 and January 23, 2016 , respectively, and was $36 million and $39 million for the six months ended January 28, 2017 and January 23, 2016 , respectively. Financing Guarantee Summary The aggregate amounts of financing guarantees outstanding at January 28, 2017 and July 30, 2016 , 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): January 28, July 30, Maximum potential future payments relating to financing guarantees: Channel partner $ 318 $ 281 End user 94 96 Total $ 412 $ 377 Deferred revenue associated with financing guarantees: Channel partner $ (99 ) $ (85 ) End user (63 ) (76 ) Total $ (162 ) $ (161 ) Maximum potential future payments relating to financing guarantees, net of associated deferred revenue $ 250 $ 216 Other Guarantees The Company’s other guarantee arrangements as of January 28, 2017 and July 30, 2016 that were subject to recognition and disclosure requirements were not material. (f) Supplier Component Remediation Liabilities In the second quarter of 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 a total of $238 million in fiscal 2016 and fiscal 2015 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. The liability related to this matter as of January 28, 2017 and July 30, 2016 was $105 million and $276 million , respectively. 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 clock-signal component sourced from a third party which is included in several of the Company’s products. (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 provide indemnification in matters involving certain of the Company’s service provider customers that are subject to patent infringement claims asserted by Sprint Communications Company, L.P. in Kansas and Delaware. Sprint alleges that the service provider customers infringe Sprint’s patents by offering VoIP telephone services utilizing products provided by the Company and other manufacturers. Sprint seeks monetary damages. Sprint’s Kansas cases were stayed pending resolution of Sprint’s appeal of the Delaware court’s judgment that certain Sprint patents were invalid. The Court of Appeals for the Federal Circuit overturned the Delaware court’s judgment on September 23, 2016. As a result, Sprint’s Kansas cases are set for trial on February 13 and March 6, 2017 against Time Warner Cable and Comcast respectively, and its Delaware case was reset for trial on November 6, 2017 against Cox Communications. The Company believes that the service providers have strong defenses and arguments that the Company's products do not infringe the patents and/or that Sprint's patents are invalid and/or that Sprint’s damages claims are inconsistent with prevailing law. Due to the uncertainty surrounding the litigation process, which involves numerous defendants, the Company is unable to reasonably estimate the ultimate outcome of this 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 matters would be material. 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 $258 million for the alleged evasion of import and other taxes, $1.4 billion for interest, and $1.2 billion for various penalties, all determined using an exchange rate as of January 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 Cisco 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. 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 , and the Court will decide whether to award enhanced damages and attorneys’ fees and whether an ongoing royalty should be awarded through the expiration of the patents in 2018. In June 2016, the Company filed post-trial motions. The Company also intends to pursue an appeal 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 , Cisco 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 Cisco would prevail in showing that SSL’s patent claims are unpatentable and instituted proceedings. The PTAB held a hearing to review the Company's petition on November 15, 2016 and a decision is expected by February 23, 2017. The district court issued an order on June 28, 2016 staying the district court case pending the final written decision from the PTAB. 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, however, the Company is unable to reasonably estimate the ultimate outcome of this litigation at this time. Kangtega Cisco Systems GmbH (“Cisco GmbH”) was subject to patent claims by Kangtega GmbH (“Kangtega”), instituted on June 6, 2013 , alleging that Cisco GmbH infringed in Germany a European Patent by marketing in Germany network intrusion-detection (or firewall) products known as the “ASA” firewall offering. On April 29, 2014 , the Mannheim Regional Court dismissed the infringement action, finding no infringement by Cisco GmbH of the asserted patent. On November 23, 2016 , a court of appeal in Germany (Oberlandesgericht Karlsruhe) heard an appeal of that judgment and the parties thereafter executed a settlement agreement resolving all aspects of the proceedings. The resolution did not have a material impact on the Company's results of operations. 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	6 Months Ended
	Jan. 28, 2017
Stockholders' Equity Note [Abstract]
Shareholders' Equity	Shareholders’ Equity (a) Cash Dividends on Shares of Common Stock During the six months ended January 28, 2017 , the Company declared and paid cash dividends of $0.52 per common share, or $2.6 billion , on the Company’s outstanding common stock. During the six months ended January 23, 2016 , the Company declared and paid cash dividends of $0.42 per common share, or $2.1 billion , on the Company’s outstanding common stock. On February 15, 2017, the Company's Board of Directors declared a quarterly dividend of $0.29 per common share to be paid on April 26, 2017 to all shareholders of record as of the close of business on April 6, 2017. 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 January 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 $13.4 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 30, 2016 4,591 $ 21.04 $ 96,597 Repurchase of common stock under the stock repurchase program (1) 65 30.72 2,002 Cumulative balance at January 28, 2017 4,656 $ 21.17 $ 98,599 (1) There were $56 million of stock repurchases pending settlement as of January 28, 2017 . There were $45 million of stock repurchases that were pending settlement as of July 30, 2016 . 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 six months ended January 28, 2017 and January 23, 2016 , the Company repurchased approximately 14 million and 16 million shares, or $432 million and $412 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	6 Months Ended
	Jan. 28, 2017
Compensation and Retirement Disclosure [Abstract]
Employee Benefit Plans	Employee Benefit Plans (a) Employee Stock Incentive Plans Stock Incentive Plan Program Description As of January 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 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. As of January 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 were forfeited or were 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. 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. 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 and prior to November 12, 2009 have an expiration date no later than nine years from the grant date. The expiration date for stock options and stock appreciation rights granted subsequent to the amendment approved on November 12, 2009 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 with respect to 20% or 25% of the shares or share units covered by the grant annually over the vesting period. 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 January 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 . The Company issued 12 million and 14 million shares under the Purchase Plan during the six months ended January 28, 2017 and January 23, 2016 , respectively. As of January 28, 2017 , 111 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 Six Months Ended January 28, 2017 January 23, 2016 January 28, 2017 January 23, 2016 Cost of sales—product $ 19 $ 16 $ 40 $ 29 Cost of sales—service 34 35 67 73 Share-based compensation expense in cost of sales 53 51 107 102 Research and development 129 107 255 221 Sales and marketing 125 126 265 265 General and administrative 45 47 94 104 Restructuring and other charges — (1 ) 3 14 Share-based compensation expense in operating expenses 299 279 617 604 Total share-based compensation expense $ 352 $ 330 $ 724 $ 706 Income tax benefit for share-based compensation $ 102 $ 103 $ 207 $ 198 As of January 28, 2017 , the total compensation cost related to unvested share-based awards not yet recognized was $2.8 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 25, 2015 276 Restricted stock, stock units, and other share-based awards granted (96 ) Share-based awards canceled/forfeited/expired 30 Shares withheld for taxes and not issued 30 Other 2 BALANCE AT JULY 30, 2016 242 Restricted stock, stock units, and other share-based awards granted (43 ) Share-based awards canceled/forfeited/expired 69 Shares withheld for taxes and not issued 20 BALANCE AT JANUARY 28, 2017 288 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 25, 2015 143 $ 22.08 Granted and assumed 70 25.69 Vested (54 ) 20.68 $ 1,428 Canceled/forfeited (14 ) 22.86 UNVESTED BALANCE AT JULY 30, 2016 145 24.26 Granted and assumed 29 28.17 Vested (39 ) 22.18 $ 1,210 Canceled/forfeited (11 ) 24.99 UNVESTED BALANCE AT JANUARY 28, 2017 124 $ 25.76 (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 25, 2015 103 $ 28.68 Assumed from acquisitions 18 5.17 Exercised (32 ) 19.22 Canceled/forfeited/expired (16 ) 30.01 BALANCE AT JULY 30, 2016 73 26.78 Assumed from acquisitions 1 1.59 Exercised (6 ) 17.43 Canceled/forfeited/expired (55 ) 31.95 BALANCE AT JANUARY 28, 2017 13 $ 8.23 The following table summarizes significant ranges of outstanding and exercisable stock options as of January 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 – 20.00 11 6.5 $ 5.84 $ 280 4 $ 5.73 $ 120 $ 20.01 – 25.00 1 0.1 23.41 3 1 23.41 2 $ 25.01 – 30.00 1 0.4 25.55 7 1 25.55 7 Total 13 5.8 $ 8.23 $ 290 6 $ 10.55 $ 129 The aggregate intrinsic value in the preceding table represents the total pretax intrinsic value, based on the Company’s closing stock price of $30.98 as of January 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 January 28, 2017 was 6 million . As of July 30, 2016 , 64 million outstanding stock options were exercisable and the weighted-average exercise price was $29.66 . (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 January 28, 2017 January 23, 2016 January 28, 2017 January 23, 2016 Number of shares granted (in millions) 15 27 3 1 Grant date fair value per share $ 27.68 $ 25.25 $ 27.90 $ 25.32 Weighted-average assumptions/inputs: Expected dividend yield 3.4 % 3.1 % 3.4 % 3.1 % Range of risk-free interest rates 0.0% – 1.5% 0.1% – 1.2% 0.3% – 1.5% 0.0% – 1.2% Range of expected volatilities for index N/A N/A N/A 15.3% – 54.3% RESTRICTED STOCK UNITS PERFORMANCE BASED RESTRICTED STOCK UNITS Six Months Ended January 28, 2017 January 23, 2016 January 28, 2017 January 23, 2016 Number of shares granted (in millions) 23 36 6 5 Grant date fair value per share $ 27.96 $ 24.93 $ 28.78 $ 24.71 Weighted-average assumptions/inputs: Expected dividend yield 3.4 % 3.1 % 3.4 % 3.2 % Range of risk-free interest rates 0.0% – 1.5% 0.0% – 1.2% 0.1% – 1.5% 0.0% – 1.2% Range of expected volatilities for index N/A N/A 16.7% – 46.8% 15.3% – 54.3% 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	6 Months Ended
	Jan. 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 six months ended January 28, 2017 and January 23, 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 30, 2016 $ 413 $ (59 ) $ (680 ) $ (326 ) Other comprehensive income (loss) before reclassifications attributable to Cisco Systems, Inc. (559 ) (48 ) (69 ) (676 ) (Gains) losses reclassified out of AOCI 15 39 (1 ) 53 Tax benefit (expense) 148 1 (1 ) 148 BALANCE AT JANUARY 28, 2017 $ 17 $ (67 ) $ (751 ) $ (801 ) 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 25, 2015 $ 310 $ (16 ) $ (233 ) $ 61 Other comprehensive income (loss) before reclassifications attributable to Cisco Systems, Inc. (515 ) (24 ) (524 ) (1,063 ) (Gains) losses reclassified out of AOCI 20 8 1 29 Tax benefit (expense) 198 2 (34 ) 166 BALANCE AT JANUARY 23, 2016 $ 13 $ (30 ) $ (790 ) $ (807 ) 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 Six Months Ended January 28, January 23, January 28, January 23, Comprehensive Income Components Income Before Taxes Income Before Taxes Line Item in Statements of Operations Net unrealized gains and losses on available-for-sale investments $ (30 ) $ (19 ) $ (15 ) $ (20 ) Other income (loss), net Net unrealized gains and losses on cash flow hedging instruments Foreign currency derivatives (21 ) (4 ) (30 ) (6 ) Operating expenses Foreign currency derivatives (6 ) (1 ) (9 ) (2 ) Cost of sales—service (27 ) (5 ) (39 ) (8 ) Cumulative translation adjustment and actuarial gains and losses 1 — 1 (1 ) Operating expenses Total amounts reclassified out of AOCI $ (56 ) $ (24 ) $ (53 ) $ (29 )

Income Taxes

Income Taxes	6 Months Ended
	Jan. 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 Six Months Ended January 28, January 23, January 28, January 23, Income before provision for income taxes $ 2,963 $ 3,306 $ 5,916 $ 6,443 Provision for income taxes $ 615 $ 159 $ 1,246 $ 866 Effective tax rate 20.8 % 4.8 % 21.1 % 13.4 % As of January 28, 2017 , the Company had $1.8 billion of unrecognized tax benefit, of which $1.3 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 January 28, 2017 could be reduced by approximately $150 million in the next 12 months.

Segment Information and Major C

Segment Information and Major Customers	6 Months Ended
	Jan. 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 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 January 28, 2017 and January 23, 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 Six Months Ended January 28, January 23, January 28, January 23, Revenue: Americas $ 6,660 $ 6,911 $ 14,103 $ 14,703 EMEA 3,065 3,093 6,078 6,187 APJC 1,855 1,923 3,751 3,719 Total $ 11,580 $ 11,927 $ 23,932 $ 24,609 Gross margin: Americas $ 4,288 $ 4,411 $ 9,121 $ 9,354 EMEA 2,012 2,011 4,025 4,000 APJC 1,121 1,184 2,325 2,262 Segment total 7,421 7,606 15,471 15,616 Unallocated corporate items (145 ) (174 ) (311 ) (352 ) Total $ 7,276 $ 7,432 $ 15,160 $ 15,264 Revenue in the United States was $5.9 billion and $6.0 billion for the three months ended January 28, 2017 and January 23, 2016 , respectively, and was $12.5 billion and $12.9 billion for the six months ended January 28, 2017 and January 23, 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. The Company groups its products and technologies into the following categories: Switching, NGN Routing, Collaboration, Data Center, Wireless, Security, Service Provider Video, and Other Products. 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 Six Months Ended January 28, January 23, January 28, January 23, Revenue: Switching $ 3,305 $ 3,475 $ 7,021 $ 7,484 NGN Routing 1,817 2,014 3,906 3,983 Collaboration 1,062 1,019 2,143 2,134 Data Center 790 822 1,624 1,681 Wireless 632 616 1,264 1,262 Security 528 462 1,068 947 Service Provider Video (1) 241 499 512 1,186 Other 116 76 255 150 Product 8,491 8,983 17,793 18,827 Service 3,089 2,944 6,139 5,782 Total $ 11,580 $ 11,927 $ 23,932 $ 24,609 (1) During the second quarter of fiscal 2016, the Company completed the sale of the Customer Premises Equipment portion of its Service Provider Video Connected Devices business (“SP Video CPE Business”). As a result, revenue from this portion of the Service Provider Video product category will not recur in future periods. Includes SP Video CPE Business revenue of $93 million for the second quarter of fiscal 2016 and $504 million for the first six months of fiscal 2016. The Company has made certain reclassifications to the product revenue amounts for prior periods to conform to the current period’s presentation. (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 January 28, 2017 and July 30, 2016 . The Company’s total cash and cash equivalents and investments held by various foreign subsidiaries were $62.3 billion and $59.8 billion as of January 28, 2017 and July 30, 2016 , respectively, and the remaining $9.6 billion and $5.9 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): January 28, July 30, Property and equipment, net: United States $ 2,797 $ 2,822 International 625 684 Total $ 3,422 $ 3,506

Net Income per Share

Net Income per Share	6 Months Ended
	Jan. 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 Six Months Ended January 28, January 23, January 28, January 23, Net income $ 2,348 $ 3,147 $ 4,670 $ 5,577 Weighted-average shares—basic 5,015 5,070 5,021 5,075 Effect of dilutive potential common shares 25 27 33 31 Weighted-average shares—diluted 5,040 5,097 5,054 5,106 Net income per share—basic $ 0.47 $ 0.62 $ 0.93 $ 1.10 Net income per share—diluted $ 0.47 $ 0.62 $ 0.92 $ 1.09 Antidilutive employee share-based awards, excluded 20 98 103 133 Employee equity share options, unvested shares, and similar equity instruments granted by the Company 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, the amount of compensation cost for future service that the Company has not yet recognized, and the amount of tax benefits that 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)	6 Months Ended
	Jan. 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 2017 is a 52-week fiscal year, and fiscal 2016 was a 53-week fiscal year.
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 January 28, 2017 and for the three and six months ended January 28, 2017 and January 23, 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 30, 2016 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 30, 2016 . 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 January 28, 2017 ; the results of operations and the statements of comprehensive income for the three and six months ended January 28, 2017 and January 23, 2016 ; and the statements of cash flows and equity for the six months ended January 28, 2017 and January 23, 2016 , as applicable, have been made. The results of operations for the three and six months ended January 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.
Recent Accounting Pronouncements	(a) New Accounting Updates Recently Adopted Consolidation of Certain Types of Legal Entities In February 2015, the FASB issued an accounting standard update that changes the analysis that a reporting entity must perform to determine whether it should consolidate certain types of legal entities. The accounting standard update became effective for the Company beginning in the first quarter of fiscal 2017. The application of this accounting standard update did not have any impact on the Company's Consolidated Balance Sheet or Statement of Operations upon adoption, but the Company has provided additional disclosures in Note 8 pursuant to this accounting standard update. (b) Recent Accounting Standards or Updates Not Yet Effective Revenue Recognition In May 2014, the Financial Accounting Standards Board ("FASB") issued an accounting standard update related to revenue from contracts with customers, which, along with amendments issued in 2015 and 2016, will supersede nearly all current U.S. GAAP guidance on this topic and eliminate industry-specific guidance. The underlying principle is to recognize revenue when promised goods or services are transferred to customers in an amount that reflects the consideration that is expected to be received for those goods or services. This accounting standard update, as amended, will be effective for the Company beginning in the first quarter of fiscal 2019. The new revenue standard may be applied retrospectively to each prior period presented or retrospectively with the cumulative effect recognized in retained earnings as of the date of adoption ("modified retrospective basis"). Early adoption is permitted, but no earlier than fiscal 2018. The Company expects to adopt this accounting standard update on a modified retrospective basis in the first quarter of fiscal 2019, and it is currently evaluating the impact of this accounting standard update on its Consolidated Financial Statements. 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 the Company beginning in the first quarter of fiscal 2019, and early adoption is permitted. The Company is currently evaluating the impact of this accounting standard update on its Consolidated Financial Statements. 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 the Company beginning in the first quarter of fiscal 2020 on a modified retrospective basis, and early adoption is permitted. The Company is currently evaluating the impact of this accounting standard update on its Consolidated Financial Statements. 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. The accounting standard will be effective for the Company beginning the first quarter of fiscal 2018, and early adoption is permitted. The Company 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 the Company beginning in the first quarter of fiscal 2021 on a modified retrospective basis, and early adoption in fiscal 2020 is permitted. The Company is currently evaluating the impact of this accounting standard update on its Consolidated Financial Statements. C lassification 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 the Company beginning in the first quarter of fiscal 2019 on a retrospective basis, and early adoption is permitted. The Company 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 the Company beginning in the first quarter of fiscal 2019 on a modified retrospective basis, and early adoption is permitted. The Company 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 the Company beginning in the first quarter of fiscal 2019 using a retrospective transition method to each period presented, and early adoption is permitted. The Company 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 the Company beginning in the first quarter of fiscal 2019 on a prospective basis. The impact of this accounting standard update will be facts and circumstances dependent, but the Company expects that in some situations 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 the Company beginning in the first quarter of fiscal 2021 on a prospective basis, and early adoption is permitted. The Company 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 and other. 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. Loan receivables represent financing arrangements related to the sale of the Company’s products and services, which may include additional funding for other costs associated with network installation and integration of the Company’s products and services. Lease receivables consist of arrangements with terms of four years on average, while loan receivables generally have terms of up to three years . The financed service contracts and other category includes financing receivables related to technical support and advanced services, software, and receivables related to financing of certain indirect costs associated with leases. 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 January 28, 2017 and July 30, 2016 , 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	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 $44 million and $11 million as of January 28, 2017 and January 23, 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. 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. The fair value of property held for sale was measured with the assistance of third-party valuation models, which used discounted cash flow techniques as part of their analysis. The fair value measurement was categorized as Level 3, as significant unobservable inputs were used in the valuation report. The impairment charge as a result of the valuations, which represented the difference between the fair value less cost to sell and the carrying amount of the assets held for sale, was included in restructuring and other charges. The remaining carrying value of the property held for sale that was impaired was $11 million as of January 28, 2017 .
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 January 28, 2017 and July 30, 2016 , 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 six months ended January 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 2017 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 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. 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.
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 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 granted by the Company 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, the amount of compensation cost for future service that the Company has not yet recognized, and the amount of tax benefits that 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)	6 Months Ended
	Jan. 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 4,656 $ 24,470 $ 74,129 $ 98,599

Acquisitions and Divestitures (

Acquisitions and Divestitures (Tables)	6 Months Ended
	Jan. 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 Purchased Intangible Assets Goodwill CloudLock $ 249 $ 36 $ 213 Others (two in total) 9 5 4 Total $ 258 $ 41 $ 217

Goodwill and Purchased Intang32

Goodwill and Purchased Intangible Assets (Tables)	6 Months Ended
	Jan. 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 six months ended January 28, 2017 (in millions): Balance at Balance at July 30, 2016 Acquisitions Other January 28, 2017 Americas $ 16,529 $ 132 $ (16 ) $ 16,645 EMEA 6,269 62 (3 ) 6,328 APJC 3,827 23 (1 ) 3,849 Total $ 26,625 $ 217 $ (20 ) $ 26,822
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 six months ended January 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 CloudLock 6.0 $ 32 4.0 $ 3 1.5 $ 1 $ — $ 36 Others (two in total) 3.0 5 0.0 — 0.0 — — 5 Total $ 37 $ 3 $ 1 $ — $ 41
Schedule Of Purchased Intangible Assets	The following tables present details of the Company’s purchased intangible assets (in millions): January 28, 2017 Gross Accumulated Amortization Net Purchased intangible assets with finite lives: Technology $ 2,900 $ (1,440 ) $ 1,460 Customer relationships 1,303 (846 ) 457 Other 57 (25 ) 32 Total purchased intangible assets with finite lives 4,260 (2,311 ) 1,949 In-process research and development, with indefinite lives 168 — 168 Total $ 4,428 $ (2,311 ) $ 2,117 July 30, 2016 Gross Accumulated Amortization Net Purchased intangible assets with finite lives: Technology $ 3,038 $ (1,391 ) $ 1,647 Customer relationships 1,793 (1,203 ) 590 Other 85 (43 ) 42 Total purchased intangible assets with finite lives 4,916 (2,637 ) 2,279 In-process research and development, with indefinite lives 222 — 222 Total $ 5,138 $ (2,637 ) $ 2,501
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 Six Months Ended January 28, 2017 January 23, 2016 January 28, 2017 January 23, 2016 Amortization of purchased intangible assets: Cost of sales $ 124 $ 139 $ 253 $ 285 Operating expenses Amortization of purchased intangible assets 64 71 142 140 Restructuring and other charges — — 38 — Total $ 188 $ 210 $ 433 $ 425
Schedule Of Estimated Future Amortization Expense Of Purchased Intangible Assets	The estimated future amortization expense of purchased intangible assets with finite lives as of January 28, 2017 is as follows (in millions): Fiscal Year Amount 2017 (remaining six months) $ 343 2018 591 2019 505 2020 292 2021 148 Thereafter 70 Total $ 1,949

Restructuring and Other Charg33

Restructuring and Other Charges (Tables)	6 Months Ended
	Jan. 28, 2017
Restructuring Charges [Abstract]
Liabilities Related To Restructuring And Other Charges	n fiscal 2016. The following tables summarize the activities related to the restructuring and other charges (i

Balance Sheet Details (Tables)

Balance Sheet Details (Tables)	6 Months Ended
	Jan. 28, 2017
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Inventories	The following tables provide details of selected balance sheet items (in millions): January 28, July 30, Inventories: Raw materials $ 149 $ 91 Work in process 1 — Finished goods: Distributor inventory and deferred cost of sales 422 457 Manufactured finished goods 413 415 Total finished goods 835 872 Service-related spares 260 236 Demonstration systems 19 18 Total $ 1,264 $ 1,217
Property And Equipment, Net	Property and equipment, net: Gross property and equipment: Land, buildings, and building and leasehold improvements $ 4,800 $ 4,778 Computer equipment and related software 1,301 1,288 Production, engineering, and other equipment 5,680 5,658 Operating lease assets 297 296 Furniture and fixtures 560 543 Total gross property and equipment 12,638 12,563 Less: accumulated depreciation and amortization (9,216 ) (9,057 ) Total $ 3,422 $ 3,506
Deferred Revenue	Deferred revenue: Service $ 10,525 $ 10,621 Product: Deferred revenue related to recurring software and subscription businesses 3,997 3,308 Deferred revenue related to two-tier distributors 401 377 Other product deferred revenue 2,163 2,166 Total product deferred revenue 6,561 5,851 Total $ 17,086 $ 16,472 Reported as: Current $ 10,243 $ 10,155 Noncurrent 6,843 6,317 Total $ 17,086 $ 16,472

Financing Receivables and Ope35

Financing Receivables and Operating Leases (Tables)	6 Months Ended
	Jan. 28, 2017
Receivables [Abstract]
Financing Receivables	A summary of the Company's financing receivables is presented as follows (in millions): January 28, 2017 Lease Receivables Loan Receivables Financed Service Contracts and Other Total Gross $ 2,967 $ 2,369 $ 4,165 $ 9,501 Residual value 191 — — 191 Unearned income (154 ) — — (154 ) Allowance for credit loss (225 ) (106 ) (47 ) (378 ) Total, net $ 2,779 $ 2,263 $ 4,118 $ 9,160 Reported as: Current $ 1,419 $ 1,040 $ 2,037 $ 4,496 Noncurrent 1,360 1,223 2,081 4,664 Total, net $ 2,779 $ 2,263 $ 4,118 $ 9,160 July 30, 2016 Lease Receivables Loan Receivables Financed Service Contracts and Other Total Gross $ 3,272 $ 2,135 $ 3,370 $ 8,777 Residual value 202 — — 202 Unearned income (174 ) — — (174 ) Allowance for credit loss (230 ) (97 ) (48 ) (375 ) Total, net $ 3,070 $ 2,038 $ 3,322 $ 8,430 Reported as: Current $ 1,490 $ 988 $ 1,794 $ 4,272 Noncurrent 1,580 1,050 1,528 4,158 Total, net $ 3,070 $ 2,038 $ 3,322 $ 8,430
Contractual Maturities Of The Gross Lease Receivables	Future minimum lease payments to the Company on lease receivables as of January 28, 2017 are summarized as follows (in millions): Fiscal Year Amount 2017 (remaining six months) $ 768 2018 1,141 2019 656 2020 300 2021 95 Thereafter 7 Total $ 2,967
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 January 28, 2017 and July 30, 2016 are summarized as follows (in millions): INTERNAL CREDIT RISK RATING January 28, 2017 1 to 4 5 to 6 7 and Higher Total Lease receivables $ 1,505 $ 1,209 $ 99 $ 2,813 Loan receivables 1,259 934 176 2,369 Financed service contracts and other 2,756 1,355 54 4,165 Total $ 5,520 $ 3,498 $ 329 $ 9,347 INTERNAL CREDIT RISK RATING July 30, 2016 1 to 4 5 to 6 7 and Higher Total Lease receivables $ 1,703 $ 1,294 $ 101 $ 3,098 Loan receivables 986 967 182 2,135 Financed service contracts and other 2,077 1,271 22 3,370 Total $ 4,766 $ 3,532 $ 305 $ 8,603
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 January 28, 2017 and July 30, 2016 (in millions): DAYS PAST DUE (INCLUDES BILLED AND UNBILLED) January 28, 2017 31-60 61-90 91+ Total Past Due Current Total Nonaccrual Financing Receivables Impaired Financing Receivables Lease receivables $ 106 $ 55 $ 237 $ 398 $ 2,415 $ 2,813 $ 66 $ 66 Loan receivables 34 24 67 125 2,244 2,369 56 56 Financed service contracts and other 111 225 494 830 3,335 4,165 29 9 Total $ 251 $ 304 $ 798 $ 1,353 $ 7,994 $ 9,347 $ 151 $ 131 DAYS PAST DUE (INCLUDES BILLED AND UNBILLED) July 30, 2016 31-60 61-90 91+ Total Past Due Current Total Nonaccrual Financing Receivables Impaired Financing Receivables Lease receivables $ 111 $ 25 $ 251 $ 387 $ 2,711 $ 3,098 $ 60 $ 60 Loan receivables 30 9 37 76 2,059 2,135 42 42 Financed service contracts and other 213 152 565 930 2,440 3,370 30 10 Total $ 354 $ 186 $ 853 $ 1,393 $ 7,210 $ 8,603 $ 132 $ 112
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 Three months ended January 28, 2017 Lease Loan Financed Service Total Allowance for credit loss as of October 29, 2016 $ 227 $ 111 $ 48 $ 386 Provisions 2 — (1 ) 1 Recoveries (write-offs), net (2 ) (4 ) — (6 ) Foreign exchange and other (2 ) (1 ) — (3 ) Allowance for credit loss as of January 28, 2017 $ 225 $ 106 $ 47 $ 378 CREDIT LOSS ALLOWANCES Six months ended January 28, 2017 Lease Loan Financed Service Total Allowance for credit loss as of July 30, 2016 $ 230 $ 97 $ 48 $ 375 Provisions (2 ) 12 (1 ) 9 Recoveries (write-offs), net (2 ) (4 ) — (6 ) Foreign exchange and other (1 ) 1 — — Allowance for credit loss as of January 28, 2017 $ 225 $ 106 $ 47 $ 378 CREDIT LOSS ALLOWANCES Three months ended January 23, 2016 Lease Loan Financed Service Total Allowance for credit loss as of October 24, 2015 $ 255 $ 90 $ 33 $ 378 Provisions (4 ) (10 ) 5 (9 ) Recoveries (write-offs), net — — (1 ) (1 ) Foreign exchange and other (3 ) — — (3 ) Allowance for credit loss as of January 23, 2016 $ 248 $ 80 $ 37 $ 365 CREDIT LOSS ALLOWANCES Six months ended January 23, 2016 Lease Loan Financed Service Total Allowance for credit loss as of July 25, 2015 $ 259 $ 87 $ 36 $ 382 Provisions (4 ) (6 ) 5 (5 ) Recoveries (write-offs), net (4 ) — (4 ) (8 ) Foreign exchange and other (3 ) (1 ) — (4 ) Allowance for credit loss as of January 23, 2016 $ 248 $ 80 $ 37 $ 365
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): January 28, 2017 July 30, 2016 Operating lease assets $ 297 $ 296 Accumulated depreciation (169 ) (161 ) Operating lease assets, net $ 128 $ 135
Schedule of Future Minimum Rental Payments for Operating Leases	Minimum future rentals on noncancelable operating leases as of January 28, 2017 are summarized as follows (in millions): Fiscal Year Amount 2017 (remaining six months) $ 123 2018 168 2019 76 2020 14 2021 5 Thereafter 2 Total $ 388

Investments (Tables)

Investments (Tables)	6 Months Ended
	Jan. 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): January 28, 2017 Amortized Cost Gross Unrealized Gains Gross Unrealized Losses Fair Value Fixed income securities: U.S. government securities $ 22,910 $ 4 $ (82 ) $ 22,832 U.S. government agency securities 2,401 1 (5 ) 2,397 Non-U.S. government and agency securities 1,211 — (6 ) 1,205 Corporate debt securities 30,878 85 (265 ) 30,698 U.S. agency mortgage-backed securities 2,031 2 (27 ) 2,006 Commercial paper 195 — — 195 Total fixed income securities 59,626 92 (385 ) 59,333 Publicly traded equity securities 1,225 463 (74 ) 1,614 Total (1) $ 60,851 $ 555 $ (459 ) $ 60,947 July 30, 2016 Amortized Cost Gross Unrealized Gains Gross Unrealized Losses Fair Value Fixed income securities: U.S. government securities $ 26,473 $ 73 $ (2 ) $ 26,544 U.S. government agency securities 2,809 8 — 2,817 Non-U.S. government and agency securities 1,096 4 — 1,100 Corporate debt securities 24,044 263 (15 ) 24,292 U.S. agency mortgage-backed securities 1,846 22 — 1,868 Total fixed income securities 56,268 370 (17 ) 56,621 Publicly traded equity securities 1,211 333 (40 ) 1,504 Total (1) $ 57,479 $ 703 $ (57 ) $ 58,125 (1) Includes investments that were pending settlement as of the respective fiscal years. The net unsettled investment purchases were $6 million and $654 million as of January 28, 2017 and July 30, 2016 , 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 the Company’s available-for-sale investments (in millions): Three Months Ended Six Months Ended January 28, 2017 January 23, 2016 January 28, 2017 January 23, 2016 Gross realized gains $ 18 $ 16 $ 48 $ 51 Gross realized losses (48 ) (35 ) (63 ) (71 ) Total $ (30 ) $ (19 ) $ (15 ) $ (20 ) The following table presents the realized net gains (losses) related to the Company’s available-for-sale investments by security type (in millions): Three Months Ended Six Months Ended January 28, 2017 January 23, 2016 January 28, 2017 January 23, 2016 Net gains (losses) on investments in publicly traded equity securities $ 4 $ 2 $ 9 $ (7 ) Net gains (losses) on investments in fixed income securities (34 ) (21 ) (24 ) (13 ) Total $ (30 ) $ (19 ) $ (15 ) $ (20 )
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 January 28, 2017 and July 30, 2016 (in millions): UNREALIZED LOSSES LESS THAN 12 MONTHS UNREALIZED LOSSES 12 MONTHS OR GREATER TOTAL January 28, 2017 Fair Value Gross Unrealized Losses Fair Value Gross Unrealized Losses Fair Value Gross Unrealized Losses Fixed income securities: U.S. government securities $ 16,303 $ (82 ) $ 16 $ — $ 16,319 $ (82 ) U.S. government agency securities 1,430 (5 ) — — 1,430 (5 ) Non-U.S. government and agency securities 1,107 (6 ) 6 — 1,113 (6 ) Corporate debt securities 15,180 (264 ) 325 (1 ) 15,505 (265 ) U.S. agency mortgage-backed securities 1,780 (27 ) — — 1,780 (27 ) Total fixed income securities 35,800 (384 ) 347 (1 ) 36,147 (385 ) Publicly traded equity securities 63 (6 ) 94 (68 ) 157 (74 ) Total $ 35,863 $ (390 ) $ 441 $ (69 ) $ 36,304 $ (459 ) UNREALIZED LOSSES LESS THAN 12 MONTHS UNREALIZED LOSSES 12 MONTHS OR GREATER TOTAL July 30, 2016 Fair Value Gross Unrealized Losses Fair Value Gross Unrealized Losses Fair Value Gross Unrealized Losses Fixed income securities: U.S. government securities $ 2,414 $ (2 ) $ — $ — $ 2,414 $ (2 ) U.S. government agency securities 144 — — — 144 — Non-U.S. government and agency securities 61 — — — 61 — Corporate debt securities 2,499 (7 ) 1,208 (8 ) 3,707 (15 ) U.S. agency mortgage-backed securities 174 — — — 174 — Total fixed income securities 5,292 (9 ) 1,208 (8 ) 6,500 (17 ) Publicly traded equity securities 188 (40 ) — — 188 (40 ) Total $ 5,480 $ (49 ) $ 1,208 $ (8 ) $ 6,688 $ (57 )
Maturities of Fixed Income Securities	The following table summarizes the maturities of the Company’s fixed income securities as of January 28, 2017 (in millions): Amortized Cost Fair Value Less than 1 year $ 12,678 $ 12,681 Due in 1 to 2 years 16,678 16,667 Due in 2 to 5 years 24,535 24,407 Due after 5 years 3,704 3,572 Mortgage-backed securities with no single maturity 2,031 2,006 Total $ 59,626 $ 59,333
Equity Method and Cost Method Investments	For such investments that were accounted for under the equity and cost method as of January 28, 2017 and July 30, 2016 , the amounts are summarized in the following table (in millions): January 28, 2017 July 30, 2016 Equity method investments $ 176 $ 174 Cost method investments 831 829 Total $ 1,007 $ 1,003

Fair Value (Tables)

Fair Value (Tables)	6 Months Ended
	Jan. 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 January 28, 2017 and July 30, 2016 were as follows (in millions): JANUARY 28, 2017 JULY 30, 2016 Level 1 Level 2 Level 3 Total Balance Level 1 Level 2 Level 3 Total Balance Assets: Cash equivalents: U.S. government securities $ — $ 50 $ — $ 50 $ — $ — $ — $ — Corporate debt securities — — — — — 43 — 43 Money market funds 8,635 — — 8,635 6,049 — — 6,049 Commercial paper — 276 — 276 — — — — Certificates of deposit — 30 — 30 — — — — Available-for-sale investments: U.S. government securities — 22,832 — 22,832 — 26,544 — 26,544 U.S. government agency securities — 2,397 — 2,397 — 2,817 — 2,817 Non-U.S. government and agency securities — 1,205 — 1,205 — 1,100 — 1,100 Corporate debt securities — 30,698 — 30,698 — 24,292 — 24,292 U.S. agency mortgage-backed securities — 2,006 — 2,006 — 1,868 — 1,868 Publicly traded equity securities 1,614 — — 1,614 1,504 — — 1,504 Commercial paper — 195 — 195 — — — — Derivative assets — 118 — 118 — 384 1 385 Total $ 10,249 $ 59,807 $ — $ 70,056 $ 7,553 $ 57,048 $ 1 $ 64,602 Liabilities: Derivative liabilities $ — $ 59 $ — $ 59 $ — $ 54 $ — $ 54 Total $ — $ 59 $ — $ 59 $ — $ 54 $ — $ 54
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 TOTAL GAINS (LOSSES) FOR THE SIX MONTHS ENDED January 28, 2017 January 23, 2016 January 28, 2017 January 23, 2016 Investments in privately held companies (impaired) $ (64 ) $ (39 ) $ (111 ) $ (56 ) Purchased intangible assets (impaired) — (37 ) (42 ) (37 ) Property held for sale—land and buildings (24 ) — (24 ) — Total gains (losses) for nonrecurring measurements $ (88 ) $ (76 ) $ (177 ) $ (93 )

Borrowings (Tables)

Borrowings (Tables)	6 Months Ended
	Jan. 28, 2017
Debt Disclosure [Abstract]
Schedule Of Short-Term Debt	The following table summarizes the Company’s short-term debt (in millions, except percentages): January 28, 2017 July 30, 2016 Amount Effective Rate Amount Effective Rate Current portion of long-term debt $ 4,151 1.26 % $ 4,159 0.97 % Commercial paper 300 0.73 % — — Other notes and borrowings — — 1 2.08 % Total short-term debt $ 4,451 $ 4,160
Schedule Of Long-Term Debt	The following table summarizes the Company’s long-term debt (in millions, except percentages): January 28, 2017 July 30, 2016 Maturity Date Amount Effective Rate Amount Effective Rate Senior notes: Floating-rate notes: Three-month LIBOR plus 0.28% March 3, 2017 $ 1,000 1.29% $ 1,000 1.03% Three-month LIBOR plus 0.60% February 21, 2018 1,000 1.58% 1,000 1.32% Three-month LIBOR plus 0.31% June 15, 2018 900 1.34% 900 1.03% Three-month LIBOR plus 0.50% March 1, 2019 500 1.49% 500 1.23% Three-month LIBOR plus 0.34% September 20, 2019 (1) 500 1.38% — — Fixed-rate notes: 1.10% March 3, 2017 2,400 1.17% 2,400 0.87% 3.15% March 14, 2017 750 1.52% 750 1.22% 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 4.84% 2,000 4.76% 1.60% February 28, 2019 1,000 1.67% 1,000 1.67% 2.125% March 1, 2019 1,750 1.39% 1,750 1.08% 1.40% September 20, 2019 (1) 1,500 1.48% — — 4.45% January 15, 2020 2,500 3.47% 2,500 3.25% 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 1.55% 500 1.24% 1.85% September 20, 2021 (1) 2,000 1.90% — — 3.00% June 15, 2022 500 1.80% 500 1.51% 2.60% February 28, 2023 500 2.68% 500 2.68% 2.20% September 20, 2023 (1) 750 2.27% — — 3.625% March 4, 2024 1,000 1.66% 1,000 1.36% 3.50% June 15, 2025 500 1.96% 500 1.67% 2.95% February 28, 2026 750 3.01% 750 3.01% 2.50% September 20, 2026 (1) 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 34,650 28,400 Unaccreted discount/issuance costs (145 ) (137 ) Hedge accounting fair value adjustments 117 379 Total $ 34,622 $ 28,642 Reported as: Current portion of long-term debt $ 4,151 $ 4,159 Long-term debt 30,471 24,483 Total $ 34,622 $ 28,642 (1) In September 2016, the Company issued senior notes for an aggregate principal amount of $6.25 billion .
Schedule Of Principal Payments For Long-Term Debt	As of January 28, 2017 , future principal payments for long-term debt, including the current portion, are summarized as follows (in millions): Fiscal Year Amount 2017 (remaining six months) $ 4,150 2018 4,750 2019 5,250 2020 6,000 2021 3,000 Thereafter 11,500 Total $ 34,650

Derivative Instruments (Tables)

Derivative Instruments (Tables)	6 Months Ended
	Jan. 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 January 28, July 30, Balance Sheet Line Item January 28, July 30, Derivatives designated as hedging instruments: Foreign currency derivatives Other current assets $ 5 $ 7 Other current liabilities $ 58 $ 53 Interest rate derivatives Other current assets 2 11 Other current liabilities — — Interest rate derivatives Other assets 109 366 Other long-term liabilities — — Total 116 384 58 53 Derivatives not designated as hedging instruments: Foreign currency derivatives Other current assets 2 — Other current liabilities 1 1 Equity derivatives/warrants Other assets — 1 Other long-term liabilities — — Total 2 1 1 1 Total $ 118 $ 385 $ 59 $ 54
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) January 28, January 23, Line Item in Statements of Operations January 28, January 23, Derivatives designated as cash flow hedging instruments: Foreign currency derivatives $ (2 ) $ (20 ) Operating expenses $ (21 ) $ (4 ) Cost of sales — service (6 ) (1 ) Total $ (2 ) $ (20 ) $ (27 ) $ (5 ) Derivatives designated as net investment hedging instruments: Foreign currency derivatives $ (3 ) $ 11 Other income (loss), net $ — $ — GAINS (LOSSES) RECOGNIZED IN OCI ON DERIVATIVES FOR THE SIX MONTHS ENDED (EFFECTIVE PORTION) GAINS (LOSSES) RECLASSIFIED FROM AOCI INTO INCOME FOR THE SIX MONTHS ENDED (EFFECTIVE PORTION) January 28, January 23, Line Item in Statements of Operations January 28, January 23, Derivatives designated as cash flow hedging instruments: Foreign currency derivatives $ (48 ) $ (24 ) Operating expenses $ (30 ) $ (6 ) Cost of sales — service (9 ) (2 ) Total $ (48 ) $ (24 ) $ (39 ) $ (8 ) Derivatives designated as net investment hedging instruments: Foreign currency derivatives $ 6 $ 11 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 January 28, January 23, January 28, January 23, Interest rate derivatives Interest expense $ (175 ) $ (16 ) $ 172 $ 18 GAINS (LOSSES) ON DERIVATIVE INSTRUMENTS FOR THE SIX MONTHS ENDED GAINS (LOSSES) RELATED TO HEDGED ITEMS FOR THE SIX MONTHS ENDED Derivatives Designated as Fair Value Hedging Instruments Line Item in Statements of Operations January 28, January 23, January 28, January 23, Interest rate derivatives Interest expense $ (266 ) $ 111 $ 262 $ (107 )
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 GAINS (LOSSES) FOR THE SIX MONTHS ENDED Derivatives Not Designated as Hedging Instruments Line Item in Statements of Operations January 28, January 23, January 28, January 23, Foreign currency derivatives Other income (loss), net $ (20 ) $ (58 ) $ (36 ) $ (54 ) Total return swaps—deferred compensation Operating expenses 26 (38 ) 23 (54 ) Equity derivatives Other income (loss), net 8 3 9 13 Total $ 14 $ (93 ) $ (4 ) $ (95 )
Schedule Of Notional Amounts Of Derivatives Outstanding	The notional amounts of the Company’s outstanding derivatives are summarized as follows (in millions): January 28, July 30, Derivatives designated as hedging instruments: Foreign currency derivatives—cash flow hedges $ 2,142 $ 2,683 Interest rate derivatives 9,900 9,900 Net investment hedging instruments 236 298 Derivatives not designated as hedging instruments: Foreign currency derivatives 2,002 2,057 Total return swaps—deferred compensation 516 476 Total $ 14,796 $ 15,414
Offsetting Assets and Liabilities	Information related to these offsetting arrangements is summarized as follows (in millions): January 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 $ 118 $ — $ 118 $ (21 ) $ (90 ) $ 7 Derivatives liabilities $ 59 $ — $ 59 $ (21 ) $ — $ 38 July 30, 2016 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 $ 385 $ — $ 385 $ (23 ) $ (305 ) $ 57 Derivatives liabilities $ 54 $ — $ 54 $ (23 ) $ — $ 31

Commitments and Contingencies (

Commitments and Contingencies (Tables)	6 Months Ended
	Jan. 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 January 28, 2017 are as follows (in millions): Fiscal Year Amount 2017 (remaining six months) $ 213 2018 334 2019 208 2020 142 2021 83 Thereafter 175 Total $ 1,155
Compensation expenses related to business combinations	The following table summarizes the compensation expense related to acquisitions (in millions): Three Months Ended Six Months Ended January 28, 2017 January 23, 2016 January 28, 2017 January 23, 2016 Compensation expense related to acquisitions $ 73 $ 71 $ 137 $ 144
Schedule Of Product Warranty Liability	The following table summarizes the activity related to the product warranty liability (in millions): Six Months Ended January 28, January 23, Balance at beginning of period $ 414 $ 449 Provisions for warranty issued 367 335 Adjustments for pre-existing warranties (3 ) (13 ) Settlements (352 ) (340 ) Divestitures — (28 ) Balance at end of period $ 426 $ 403
Schedule of Guarantor Obligations	The aggregate amounts of financing guarantees outstanding at January 28, 2017 and July 30, 2016 , 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): January 28, July 30, Maximum potential future payments relating to financing guarantees: Channel partner $ 318 $ 281 End user 94 96 Total $ 412 $ 377 Deferred revenue associated with financing guarantees: Channel partner $ (99 ) $ (85 ) End user (63 ) (76 ) Total $ (162 ) $ (161 ) Maximum potential future payments relating to financing guarantees, net of associated deferred revenue $ 250 $ 216

Shareholders' Equity (Tables)

Shareholders' Equity (Tables)	6 Months Ended
	Jan. 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 30, 2016 4,591 $ 21.04 $ 96,597 Repurchase of common stock under the stock repurchase program (1) 65 30.72 2,002 Cumulative balance at January 28, 2017 4,656 $ 21.17 $ 98,599 (1) There were $56 million of stock repurchases pending settlement as of January 28, 2017 . There were $45 million of stock repurchases that were pending settlement as of July 30, 2016 .

Employee Benefit Plans (Tables)

Employee Benefit Plans (Tables)	6 Months Ended
	Jan. 28, 2017
Compensation and Retirement Disclosure [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 Six Months Ended January 28, 2017 January 23, 2016 January 28, 2017 January 23, 2016 Cost of sales—product $ 19 $ 16 $ 40 $ 29 Cost of sales—service 34 35 67 73 Share-based compensation expense in cost of sales 53 51 107 102 Research and development 129 107 255 221 Sales and marketing 125 126 265 265 General and administrative 45 47 94 104 Restructuring and other charges — (1 ) 3 14 Share-based compensation expense in operating expenses 299 279 617 604 Total share-based compensation expense $ 352 $ 330 $ 724 $ 706 Income tax benefit for share-based compensation $ 102 $ 103 $ 207 $ 198
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 25, 2015 276 Restricted stock, stock units, and other share-based awards granted (96 ) Share-based awards canceled/forfeited/expired 30 Shares withheld for taxes and not issued 30 Other 2 BALANCE AT JULY 30, 2016 242 Restricted stock, stock units, and other share-based awards granted (43 ) Share-based awards canceled/forfeited/expired 69 Shares withheld for taxes and not issued 20 BALANCE AT JANUARY 28, 2017 288
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 25, 2015 143 $ 22.08 Granted and assumed 70 25.69 Vested (54 ) 20.68 $ 1,428 Canceled/forfeited (14 ) 22.86 UNVESTED BALANCE AT JULY 30, 2016 145 24.26 Granted and assumed 29 28.17 Vested (39 ) 22.18 $ 1,210 Canceled/forfeited (11 ) 24.99 UNVESTED BALANCE AT JANUARY 28, 2017 124 $ 25.76
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 25, 2015 103 $ 28.68 Assumed from acquisitions 18 5.17 Exercised (32 ) 19.22 Canceled/forfeited/expired (16 ) 30.01 BALANCE AT JULY 30, 2016 73 26.78 Assumed from acquisitions 1 1.59 Exercised (6 ) 17.43 Canceled/forfeited/expired (55 ) 31.95 BALANCE AT JANUARY 28, 2017 13 $ 8.23
Summary Of Significant Ranges Of Outstanding And Exercisable Stock Options	The following table summarizes significant ranges of outstanding and exercisable stock options as of January 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 – 20.00 11 6.5 $ 5.84 $ 280 4 $ 5.73 $ 120 $ 20.01 – 25.00 1 0.1 23.41 3 1 23.41 2 $ 25.01 – 30.00 1 0.4 25.55 7 1 25.55 7 Total 13 5.8 $ 8.23 $ 290 6 $ 10.55 $ 129
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 January 28, 2017 January 23, 2016 January 28, 2017 January 23, 2016 Number of shares granted (in millions) 15 27 3 1 Grant date fair value per share $ 27.68 $ 25.25 $ 27.90 $ 25.32 Weighted-average assumptions/inputs: Expected dividend yield 3.4 % 3.1 % 3.4 % 3.1 % Range of risk-free interest rates 0.0% – 1.5% 0.1% – 1.2% 0.3% – 1.5% 0.0% – 1.2% Range of expected volatilities for index N/A N/A N/A 15.3% – 54.3% RESTRICTED STOCK UNITS PERFORMANCE BASED RESTRICTED STOCK UNITS Six Months Ended January 28, 2017 January 23, 2016 January 28, 2017 January 23, 2016 Number of shares granted (in millions) 23 36 6 5 Grant date fair value per share $ 27.96 $ 24.93 $ 28.78 $ 24.71 Weighted-average assumptions/inputs: Expected dividend yield 3.4 % 3.1 % 3.4 % 3.2 % Range of risk-free interest rates 0.0% – 1.5% 0.0% – 1.2% 0.1% – 1.5% 0.0% – 1.2% Range of expected volatilities for index N/A N/A 16.7% – 46.8% 15.3% – 54.3%

Comprehensive Income (Tables)

Comprehensive Income (Tables)	6 Months Ended
	Jan. 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 six months ended January 28, 2017 and January 23, 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 30, 2016 $ 413 $ (59 ) $ (680 ) $ (326 ) Other comprehensive income (loss) before reclassifications attributable to Cisco Systems, Inc. (559 ) (48 ) (69 ) (676 ) (Gains) losses reclassified out of AOCI 15 39 (1 ) 53 Tax benefit (expense) 148 1 (1 ) 148 BALANCE AT JANUARY 28, 2017 $ 17 $ (67 ) $ (751 ) $ (801 ) 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 25, 2015 $ 310 $ (16 ) $ (233 ) $ 61 Other comprehensive income (loss) before reclassifications attributable to Cisco Systems, Inc. (515 ) (24 ) (524 ) (1,063 ) (Gains) losses reclassified out of AOCI 20 8 1 29 Tax benefit (expense) 198 2 (34 ) 166 BALANCE AT JANUARY 23, 2016 $ 13 $ (30 ) $ (790 ) $ (807 )
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 Six Months Ended January 28, January 23, January 28, January 23, Comprehensive Income Components Income Before Taxes Income Before Taxes Line Item in Statements of Operations Net unrealized gains and losses on available-for-sale investments $ (30 ) $ (19 ) $ (15 ) $ (20 ) Other income (loss), net Net unrealized gains and losses on cash flow hedging instruments Foreign currency derivatives (21 ) (4 ) (30 ) (6 ) Operating expenses Foreign currency derivatives (6 ) (1 ) (9 ) (2 ) Cost of sales—service (27 ) (5 ) (39 ) (8 ) Cumulative translation adjustment and actuarial gains and losses 1 — 1 (1 ) Operating expenses Total amounts reclassified out of AOCI $ (56 ) $ (24 ) $ (53 ) $ (29 )

Income Taxes (Tables)

Income Taxes (Tables)	6 Months Ended
	Jan. 28, 2017
Income Tax Disclosure [Abstract]
Income Tax Provision	The following table provides details of income taxes (in millions, except percentages): Three Months Ended Six Months Ended January 28, January 23, January 28, January 23, Income before provision for income taxes $ 2,963 $ 3,306 $ 5,916 $ 6,443 Provision for income taxes $ 615 $ 159 $ 1,246 $ 866 Effective tax rate 20.8 % 4.8 % 21.1 % 13.4 %

Segment Information and Major45

Segment Information and Major Customers (Tables)	6 Months Ended
	Jan. 28, 2017
Segment Reporting [Abstract]
Reportable Segments	Summarized financial information by segment for the three months ended January 28, 2017 and January 23, 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 Six Months Ended January 28, January 23, January 28, January 23, Revenue: Americas $ 6,660 $ 6,911 $ 14,103 $ 14,703 EMEA 3,065 3,093 6,078 6,187 APJC 1,855 1,923 3,751 3,719 Total $ 11,580 $ 11,927 $ 23,932 $ 24,609 Gross margin: Americas $ 4,288 $ 4,411 $ 9,121 $ 9,354 EMEA 2,012 2,011 4,025 4,000 APJC 1,121 1,184 2,325 2,262 Segment total 7,421 7,606 15,471 15,616 Unallocated corporate items (145 ) (174 ) (311 ) (352 ) Total $ 7,276 $ 7,432 $ 15,160 $ 15,264
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 Six Months Ended January 28, January 23, January 28, January 23, Revenue: Switching $ 3,305 $ 3,475 $ 7,021 $ 7,484 NGN Routing 1,817 2,014 3,906 3,983 Collaboration 1,062 1,019 2,143 2,134 Data Center 790 822 1,624 1,681 Wireless 632 616 1,264 1,262 Security 528 462 1,068 947 Service Provider Video (1) 241 499 512 1,186 Other 116 76 255 150 Product 8,491 8,983 17,793 18,827 Service 3,089 2,944 6,139 5,782 Total $ 11,580 $ 11,927 $ 23,932 $ 24,609 (1) During the second quarter of fiscal 2016, the Company completed the sale of the Customer Premises Equipment portion of its Service Provider Video Connected Devices business (“SP Video CPE Business”). As a result, revenue from this portion of the Service Provider Video product category will not recur in future periods. Includes SP Video CPE Business revenue of $93 million for the second quarter of fiscal 2016
Property And Equipment, Net	The following table presents property and equipment information for geographic areas (in millions): January 28, July 30, Property and equipment, net: United States $ 2,797 $ 2,822 International 625 684 Total $ 3,422 $ 3,506

Net Income per Share (Tables)

Net Income per Share (Tables)	6 Months Ended
	Jan. 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 Six Months Ended January 28, January 23, January 28, January 23, Net income $ 2,348 $ 3,147 $ 4,670 $ 5,577 Weighted-average shares—basic 5,015 5,070 5,021 5,075 Effect of dilutive potential common shares 25 27 33 31 Weighted-average shares—diluted 5,040 5,097 5,054 5,106 Net income per share—basic $ 0.47 $ 0.62 $ 0.93 $ 1.10 Net income per share—diluted $ 0.47 $ 0.62 $ 0.92 $ 1.09 Antidilutive employee share-based awards, excluded 20 98 103 133

Supplemental Information (Stock

Supplemental Information (Stock Repurchases Since Inception of Program) (Details) - USD ($) shares in Millions	Jan. 28, 2017	Jul. 30, 2016
Supplementary Information [Line Items]
Authorized common stock repurchase amount	$ 112,000,000,000
Repurchases of common stock under the repurchase program (in shares)	4,656	4,591
Repurchases of common stock under the repurchase program	$ 98,599,000,000	$ 96,597,000,000
Shares of Common Stock
Supplementary Information [Line Items]
Repurchases of common stock under the repurchase program (in shares)	4,656
Common Stock and Additional Paid-In Capital
Supplementary Information [Line Items]
Repurchases of common stock under the repurchase program	$ 24,470,000,000
Retained Earnings
Supplementary Information [Line Items]
Repurchases of common stock under the repurchase program	74,129,000,000
Total Cisco Shareholders’ Equity
Supplementary Information [Line Items]
Repurchases of common stock under the repurchase program	$ 98,599,000,000

Basis of Presentation (Details)

Basis of Presentation (Details)	6 Months Ended
	Jan. 28, 2017segment
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Number of geographic segments	3

Acquisitions and Divestitures49

Acquisitions and Divestitures (Additional Information Acquisitions) (Details) $ in Millions	Jan. 24, 2017USD ($)	Jan. 28, 2017USD ($)acquisition	Jan. 23, 2016USD ($)
Supplementary Information [Line Items]
Number of business combinations | acquisition		3
Acquired cash and cash equivalents		$ 1
Purchase Consideration		258
AppDynamics, Inc
Supplementary Information [Line Items]
Purchase Consideration	$ 3,700
General and administrative
Supplementary Information [Line Items]
Acquisition related costs		$ 3	$ 14

Acquisitions and Divestitures50

Acquisitions and Divestitures (Summary Of Allocation Of Total Purchase Consideration) (Details) $ in Millions	3 Months Ended	6 Months Ended
	Jan. 28, 2017USD ($)acquisition	Jan. 28, 2017USD ($)acquisition
Business Acquisition [Line Items]
Number of business combinations | acquisition		3
Purchase Consideration		$ 258
Purchased Intangible Assets	$ 41	41
Goodwill	217	217
CloudLock Inc
Business Acquisition [Line Items]
Purchase Consideration		249
Purchased Intangible Assets	36	36
Goodwill	$ 213	$ 213
Others (two in total)
Business Acquisition [Line Items]
Number of business combinations | acquisition	2	2
Purchase Consideration		$ 9
Purchased Intangible Assets	$ 5	5
Goodwill	$ 4	$ 4

Goodwill and Purchased Intang51

Goodwill and Purchased Intangible Assets (Schedule Of Goodwill By Reportable Segments) (Details) $ in Millions	6 Months Ended
	Jan. 28, 2017USD ($)
Goodwill [Roll Forward]
Beginning Balance	$ 26,625
Acquisitions	217
Other	(20)
Ending Balance	26,822
Americas
Goodwill [Roll Forward]
Beginning Balance	16,529
Acquisitions	132
Other	(16)
Ending Balance	16,645
EMEA
Goodwill [Roll Forward]
Beginning Balance	6,269
Acquisitions	62
Other	(3)
Ending Balance	6,328
APJC
Goodwill [Roll Forward]
Beginning Balance	3,827
Acquisitions	23
Other	(1)
Ending Balance	$ 3,849

Goodwill and Purchased Intang52

Goodwill and Purchased Intangible Assets (Schedule Of Intangible Assets Acquired Through Business Combinations) (Details) $ in Millions	3 Months Ended	6 Months Ended
	Jan. 28, 2017USD ($)acquisition	Jan. 28, 2017USD ($)acquisition
Intangible Assets Acquired Through Business Combinations
Number of business combinations | acquisition		3
Total, Amount	$ 41	$ 41
CloudLock Inc
Intangible Assets Acquired Through Business Combinations
Total, Amount	$ 36	$ 36
Others (two in total)
Intangible Assets Acquired Through Business Combinations
Number of business combinations | acquisition	2	2
Total, Amount	$ 5	$ 5
IPR&D
Intangible Assets Acquired Through Business Combinations
Indefinite Lives, Amount		0
IPR&D | CloudLock Inc
Intangible Assets Acquired Through Business Combinations
Indefinite Lives, Amount		0
IPR&D | Others (two in total)
Intangible Assets Acquired Through Business Combinations
Indefinite Lives, Amount		0
TECHNOLOGY
Intangible Assets Acquired Through Business Combinations
Finite Lives, Amount		$ 37
TECHNOLOGY | CloudLock Inc
Intangible Assets Acquired Through Business Combinations
Weighted- Average Useful Life (in Years)		6 years
Finite Lives, Amount		$ 32
TECHNOLOGY | Others (two in total)
Intangible Assets Acquired Through Business Combinations
Weighted- Average Useful Life (in Years)		3 years
Finite Lives, Amount		$ 5
CUSTOMER RELATIONSHIPS
Intangible Assets Acquired Through Business Combinations
Finite Lives, Amount		$ 3
CUSTOMER RELATIONSHIPS | CloudLock Inc
Intangible Assets Acquired Through Business Combinations
Weighted- Average Useful Life (in Years)		4 years
Finite Lives, Amount		$ 3
CUSTOMER RELATIONSHIPS | Others (two in total)
Intangible Assets Acquired Through Business Combinations
Weighted- Average Useful Life (in Years)		0 years
Finite Lives, Amount		$ 0
OTHER
Intangible Assets Acquired Through Business Combinations
Finite Lives, Amount		$ 1
OTHER | CloudLock Inc
Intangible Assets Acquired Through Business Combinations
Weighted- Average Useful Life (in Years)		1 year 6 months
Finite Lives, Amount		$ 1
OTHER | Others (two in total)
Intangible Assets Acquired Through Business Combinations
Weighted- Average Useful Life (in Years)		0 years
Finite Lives, Amount		$ 0

Goodwill and Purchased Intang53

Goodwill and Purchased Intangible Assets (Schedule Of Purchased Intangible Assets With Finite And Indefinite Lives) (Details) - USD ($) $ in Millions	Jan. 28, 2017	Jul. 30, 2016
Business Acquisition [Line Items]
Gross	$ 4,260	$ 4,916
Accumulated Amortization	(2,311)	(2,637)
Total purchased intangible assets with finite lives, net	1,949	2,279
In-process research and development, with indefinite lives	168	222
Total finite and indefinite lives Intangible assets, Gross	4,428	5,138
Total finite and indefinite lives intangible assets, net	2,117	2,501
TECHNOLOGY
Business Acquisition [Line Items]
Gross	2,900	3,038
Accumulated Amortization	(1,440)	(1,391)
Total purchased intangible assets with finite lives, net	1,460	1,647
CUSTOMER RELATIONSHIPS
Business Acquisition [Line Items]
Gross	1,303	1,793
Accumulated Amortization	(846)	(1,203)
Total purchased intangible assets with finite lives, net	457	590
OTHER
Business Acquisition [Line Items]
Gross	57	85
Accumulated Amortization	(25)	(43)
Total purchased intangible assets with finite lives, net	$ 32	$ 42

Goodwill and Purchased Intang54

Goodwill and Purchased Intangible Assets (Additional Information) (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jan. 28, 2017	Jan. 23, 2016	Jan. 28, 2017	Jan. 23, 2016
Acquired Finite-Lived Intangible Assets [Line Items]
Purchased intangible assets impairment	$ 0	$ 37	$ 42	$ 37
Impairment charges	64	71	142	140
Restructuring and other charges
Acquired Finite-Lived Intangible Assets [Line Items]
Impairment charges	$ 0	$ 0	$ 38	$ 0

Goodwill and Purchased Intang55

Goodwill and Purchased Intangible Assets (Schedule Of Amortization Of Purchased Intangible Assets) (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jan. 28, 2017	Jan. 23, 2016	Jan. 28, 2017	Jan. 23, 2016
Acquired Finite-Lived Intangible Assets [Line Items]
Amortization of purchased intangible assets	$ 64	$ 71	$ 142	$ 140
Cost of sales
Acquired Finite-Lived Intangible Assets [Line Items]
Amortization of purchased intangible assets	124	139	253	285
Amortization of purchased intangible assets
Acquired Finite-Lived Intangible Assets [Line Items]
Amortization of purchased intangible assets	64	71	142	140
Restructuring and other charges
Acquired Finite-Lived Intangible Assets [Line Items]
Amortization of purchased intangible assets	0	0	38	0
Total
Acquired Finite-Lived Intangible Assets [Line Items]
Amortization of purchased intangible assets	$ 188	$ 210	$ 433	$ 425

Goodwill and Purchased Intang56

Goodwill and Purchased Intangible Assets (Schedule Of Estimated Future Amortization Expense Of Purchased Intangible Assets) (Details) - USD ($) $ in Millions	Jan. 28, 2017	Jul. 30, 2016
Finite-Lived Intangible Assets, Future Amortization Expense [Abstract]
2017 (remaining six months)	$ 343
2,018	591
2,019	505
2,020	292
2,021	148
Thereafter	70
Total purchased intangible assets with finite lives, net	$ 1,949	$ 2,279

Restructuring and Other Charg57

Restructuring and Other Charges (Additional Information) (Details) $ in Millions	1 Months Ended		3 Months Ended		6 Months Ended
	Aug. 31, 2016USD ($)employee	Aug. 31, 2014USD ($)	Jan. 28, 2017USD ($)	Jan. 23, 2016USD ($)	Jan. 28, 2017USD ($)	Jan. 23, 2016USD ($)
Restructuring Cost and Reserve [Line Items]
Restructuring charges incurred during period			$ 133	$ 95	$ 544	$ 236
Credit to cost of sales			$ 1	$ 1	2	2
Restructuring charges					$ 544	$ 238
FISCAL 2017 PLAN
Restructuring Cost and Reserve [Line Items]
Expected number of employees impacted by restructuring plan | employee	5,500
Approximate workforce reduction, percent	7.00%
Expected restructuring charges	$ 700
FISCAL 2015 PLAN
Restructuring Cost and Reserve [Line Items]
Restructuring charges		$ 756

Restructuring and Other Charg58

Restructuring and Other Charges (Schedule Of Activities Related To Restructuring And Other Charges) (Details) - USD ($) $ in Millions	6 Months Ended
	Jan. 28, 2017	Jan. 23, 2016
Restructuring Reserve [Roll Forward]
Liability as of beginning period	$ 45	$ 89
Charges	544	238
Cash payments	(388)	(197)
Non-cash items	(73)	(21)
Liability as of ending period	128	109
FISCAL 2015 AND PRIOR PLANS | Employee Severance
Restructuring Reserve [Roll Forward]
Liability as of beginning period	21	60
Charges	0	206
Cash payments	(13)	(187)
Non-cash items	(4)	0
Liability as of ending period	4	79
FISCAL 2015 AND PRIOR PLANS | Other
Restructuring Reserve [Roll Forward]
Liability as of beginning period	24	29
Charges	0	32
Cash payments	(4)	(10)
Non-cash items	(9)	(21)
Liability as of ending period	11	$ 30
FISCAL 2017 PLAN | Employee Severance
Restructuring Reserve [Roll Forward]
Liability as of beginning period	0
Charges	452
Cash payments	(368)
Non-cash items	(2)
Liability as of ending period	82
FISCAL 2017 PLAN | Other
Restructuring Reserve [Roll Forward]
Liability as of beginning period	0
Charges	92
Cash payments	(3)
Non-cash items	(58)
Liability as of ending period	$ 31

Balance Sheet Details (Details)

Balance Sheet Details (Details) - USD ($)	Jan. 28, 2017	Jul. 30, 2016
Inventories:
Raw materials	$ 149,000,000	$ 91,000,000
Work in process	1,000,000	0
Finished goods:
Distributor inventory and deferred cost of sales	422,000,000	457,000,000
Manufactured finished goods	413,000,000	415,000,000
Total finished goods	835,000,000	872,000,000
Service-related spares	260,000,000	236,000,000
Demonstration systems	19,000,000	18,000,000
Total	1,264,000,000	1,217,000,000
Gross property and equipment:
Land, buildings, and building and leasehold improvements	4,800,000,000	4,778,000,000
Computer equipment and related software	1,301,000,000	1,288,000,000
Production, engineering, and other equipment	5,680,000,000	5,658,000,000
Operating lease assets	297,000,000	296,000,000
Furniture and fixtures	560,000,000	543,000,000
Total gross property and equipment	12,638,000,000	12,563,000,000
Less: accumulated depreciation and amortization	(9,216,000,000)	(9,057,000,000)
Total	3,422,000,000	3,506,000,000
Deferred Revenue Arrangement [Line Items]
Deferred revenue:	17,086,000,000	16,472,000,000
Current	10,243,000,000	10,155,000,000
Noncurrent	6,843,000,000	6,317,000,000
Product:
Deferred Revenue Arrangement [Line Items]
Deferred revenue:	6,561,000,000	5,851,000,000
Service
Deferred Revenue Arrangement [Line Items]
Deferred revenue:	10,525,000,000	10,621,000,000
Deferred revenue related to recurring software and subscription businesses | Product:
Deferred Revenue Arrangement [Line Items]
Deferred revenue:	3,997,000,000	3,308,000,000
Deferred revenue related to two-tier distributors | Product:
Deferred Revenue Arrangement [Line Items]
Deferred revenue:	401,000,000	377,000,000
Other product deferred revenue | Product:
Deferred Revenue Arrangement [Line Items]
Deferred revenue:	$ 2,163,000,000	$ 2,166,000,000

Financing Receivables and Ope60

Financing Receivables and Operating Leases (Additional Information) (Details) $ in Millions	6 Months Ended
	Jan. 28, 2017USD ($)rating	Jul. 30, 2016USD ($)
Financing Receivables And Guarantees [Line Items]
Average lease term	4 years
Deferred revenue	$ 17,086	$ 16,472
Financing receivable, allowance for credit loss and deferred revenue	2,327	2,112
Total financing receivables before allowance for credit loss	$ 9,538	8,805
Threshold for past due receivables	31 days
Unbilled or current financing receivables included in greater than 91 days plus past due	$ 444	670
Financing receivable, 91 days past due and still accruing	$ 316	144
Investment credit risk ratings range lowest | rating	1
Rating at or higher when receivables deemed impaired | rating	10
Rating at or higher when receivables deemed impaired | rating	8
Financed Service Contracts and Other
Financing Receivables And Guarantees [Line Items]
Deferred revenue	$ 1,922	$ 1,716
Maximum
Financing Receivables And Guarantees [Line Items]
Loan receivables term	3 years
Maximum | Financed Service Contracts and Other
Financing Receivables And Guarantees [Line Items]
Financed service contracts term	3 years
Minimum | Financed Service Contracts and Other
Financing Receivables And Guarantees [Line Items]
Financed service contracts term	1 year

Financing Receivables and Ope61

Financing Receivables and Operating Leases (Schedule Of Financing Receivables) (Details) - USD ($) $ in Millions	Jan. 28, 2017	Oct. 29, 2016	Jul. 30, 2016	Jan. 23, 2016	Oct. 24, 2015	Jul. 25, 2015
Financing Receivables [Line Items]
Allowance for credit loss	$ (378)	$ (386)	$ (375)	$ (365)	$ (378)	$ (382)
Current	4,496		4,272
Lease Receivables
Financing Receivables [Line Items]
Gross	2,967		3,272
Residual value	191		202
Unearned income	(154)		(174)
Allowance for credit loss	(225)		(230)
Total, net	2,779		3,070
Current	1,419		1,490
Noncurrent	1,360		1,580
Loan Receivables
Financing Receivables [Line Items]
Gross	2,369		2,135
Residual value	0		0
Unearned income	0		0
Allowance for credit loss	(106)		(97)
Total, net	2,263		2,038
Current	1,040		988
Noncurrent	1,223		1,050
Financed Service Contracts and Other
Financing Receivables [Line Items]
Gross	4,165		3,370
Residual value	0		0
Unearned income	0		0
Allowance for credit loss	(47)		(48)
Total, net	4,118		3,322
Current	2,037		1,794
Noncurrent	2,081		1,528
Total
Financing Receivables [Line Items]
Gross	9,501		8,777
Residual value	191		202
Unearned income	(154)		(174)
Allowance for credit loss	(378)		(375)
Total, net	9,160		8,430
Current	4,496		4,272
Noncurrent	$ 4,664		$ 4,158

Financing Receivables and Ope62

Financing Receivables and Operating Leases (Schedule Of Contractual Maturities Of Gross Lease Receivables) (Details) $ in Millions	Jan. 28, 2017USD ($)
Receivables [Abstract]
2017 (remaining six months)	$ 768
2,018	1,141
2,019	656
2,020	300
2,021	95
Thereafter	7
Total	$ 2,967

Financing Receivables and Ope63

Financing Receivables and Operating Leases (Schedule Of Financing Receivables Categorized By Internal Credit Risk Rating) (Details) - USD ($) $ in Millions	Jan. 28, 2017	Jul. 30, 2016
Financing Receivable, Recorded Investment [Line Items]
Gross receivables less unearned income	$ 9,347	$ 8,603
1 to 4
Financing Receivable, Recorded Investment [Line Items]
Gross receivables less unearned income	5,520	4,766
5 to 6
Financing Receivable, Recorded Investment [Line Items]
Gross receivables less unearned income	3,498	3,532
7 and Higher
Financing Receivable, Recorded Investment [Line Items]
Gross receivables less unearned income	329	305
Total
Financing Receivable, Recorded Investment [Line Items]
Gross receivables less unearned income	9,347	8,603
Lease Receivables | 1 to 4
Financing Receivable, Recorded Investment [Line Items]
Gross receivables less unearned income	1,505	1,703
Lease Receivables | 5 to 6
Financing Receivable, Recorded Investment [Line Items]
Gross receivables less unearned income	1,209	1,294
Lease Receivables | 7 and Higher
Financing Receivable, Recorded Investment [Line Items]
Gross receivables less unearned income	99	101
Lease Receivables | Total
Financing Receivable, Recorded Investment [Line Items]
Gross receivables less unearned income	2,813	3,098
Loan Receivables | 1 to 4
Financing Receivable, Recorded Investment [Line Items]
Gross receivables less unearned income	1,259	986
Loan Receivables | 5 to 6
Financing Receivable, Recorded Investment [Line Items]
Gross receivables less unearned income	934	967
Loan Receivables | 7 and Higher
Financing Receivable, Recorded Investment [Line Items]
Gross receivables less unearned income	176	182
Loan Receivables | Total
Financing Receivable, Recorded Investment [Line Items]
Gross receivables less unearned income	2,369	2,135
Financed Service Contracts and Other | 1 to 4
Financing Receivable, Recorded Investment [Line Items]
Gross receivables less unearned income	2,756	2,077
Financed Service Contracts and Other | 5 to 6
Financing Receivable, Recorded Investment [Line Items]
Gross receivables less unearned income	1,355	1,271
Financed Service Contracts and Other | 7 and Higher
Financing Receivable, Recorded Investment [Line Items]
Gross receivables less unearned income	54	22
Financed Service Contracts and Other | Total
Financing Receivable, Recorded Investment [Line Items]
Gross receivables less unearned income	$ 4,165	$ 3,370

Financing Receivables and Ope64

Financing Receivables and Operating Leases (Schedule Of Aging Analysis Of Financing Receivables) (Details) - USD ($) $ in Millions	Jan. 28, 2017	Jul. 30, 2016
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	$ 1,353	$ 1,393
Current	7,994	7,210
Total	9,347	8,603
Nonaccrual Financing Receivables	151	132
Impaired Financing Receivables	131	112
Past due 31-60 days
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	251	354
Past due 61-90 days
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	304	186
Past due 91 or above days
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	798	853
Lease Receivables
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	398	387
Current	2,415	2,711
Total	2,813	3,098
Nonaccrual Financing Receivables	66	60
Impaired Financing Receivables	66	60
Lease Receivables | Past due 31-60 days
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	106	111
Lease Receivables | Past due 61-90 days
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	55	25
Lease Receivables | Past due 91 or above days
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	237	251
Loan Receivables
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	125	76
Current	2,244	2,059
Total	2,369	2,135
Nonaccrual Financing Receivables	56	42
Impaired Financing Receivables	56	42
Loan Receivables | Past due 31-60 days
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	34	30
Loan Receivables | Past due 61-90 days
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	24	9
Loan Receivables | Past due 91 or above days
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	67	37
Financed Service Contracts and Other
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	830	930
Current	3,335	2,440
Total	4,165	3,370
Nonaccrual Financing Receivables	29	30
Impaired Financing Receivables	9	10
Financed Service Contracts and Other | Past due 31-60 days
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	111	213
Financed Service Contracts and Other | Past due 61-90 days
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	225	152
Financed Service Contracts and Other | Past due 91 or above days
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	$ 494	$ 565

Financing Receivables and Ope65

Financing Receivables and Operating Leases (Summary Of Allowances For Credit Loss And Related Financing Receivables) (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jan. 28, 2017	Jan. 23, 2016	Jan. 28, 2017	Jan. 23, 2016
Financing Receivable, Allowance for Credit Losses [Roll Forward]
Allowance for credit loss as of beginning of period	$ 386	$ 378	$ 375	$ 382
Provisions	1	(9)	9	(5)
Recoveries (write-offs), net	(6)	(1)	(6)	(8)
Foreign exchange and other	(3)	(3)	0	(4)
Allowance for credit loss as of end of period	378	365	378	365
Lease Receivables
Financing Receivable, Allowance for Credit Losses [Roll Forward]
Allowance for credit loss as of beginning of period	227	255	230	259
Provisions	2	(4)	(2)	(4)
Recoveries (write-offs), net	(2)	0	(2)	(4)
Foreign exchange and other	(2)	(3)	(1)	(3)
Allowance for credit loss as of end of period	225	248	225	248
Loan Receivables
Financing Receivable, Allowance for Credit Losses [Roll Forward]
Allowance for credit loss as of beginning of period	111	90	97	87
Provisions	0	(10)	12	(6)
Recoveries (write-offs), net	(4)	0	(4)	0
Foreign exchange and other	(1)	0	1	(1)
Allowance for credit loss as of end of period	106	80	106	80
Financed Service Contracts and Other
Financing Receivable, Allowance for Credit Losses [Roll Forward]
Allowance for credit loss as of beginning of period	48	33	48	36
Provisions	(1)	5	(1)	5
Recoveries (write-offs), net	0	(1)	0	(4)
Foreign exchange and other	0	0	0	0
Allowance for credit loss as of end of period	$ 47	$ 37	$ 47	$ 37

Financing Receivables and Ope66

Financing Receivables and Operating Leases (Operating Lease Schedule) (Details) - USD ($) $ in Millions	Jan. 28, 2017	Jul. 30, 2016
Receivables [Abstract]
Operating lease assets	$ 297	$ 296
Accumulated depreciation	(169)	(161)
Operating lease assets, net	$ 128	$ 135

Financing Receivables and Ope67

Financing Receivables and Operating Leases (Minimum future rental payments) (Details) $ in Millions	Jan. 28, 2017USD ($)
Receivables [Abstract]
2017 (remaining six months)	$ 123
2,018	168
2,019	76
2,020	14
2,021	5
Thereafter	2
Total	$ 388

Investments (Summary Of Availab

Investments (Summary Of Available-For-Sale Investments) (Details) - USD ($) $ in Millions	Jan. 28, 2017	Jul. 30, 2016
Schedule of Investments [Line Items]
Amortized Cost	$ 60,851	$ 57,479
Gross Unrealized Gains	555	703
Gross Unrealized Losses	(459)	(57)
Fair Value	60,947	58,125
Net unsettled available-for-sale investments, purchases	6	654
Total fixed income securities
Schedule of Investments [Line Items]
Amortized Cost	59,626	56,268
Gross Unrealized Gains	92	370
Gross Unrealized Losses	(385)	(17)
Fair Value	59,333	56,621
Total fixed income securities | U.S. government securities
Schedule of Investments [Line Items]
Amortized Cost	22,910	26,473
Gross Unrealized Gains	4	73
Gross Unrealized Losses	(82)	(2)
Fair Value	22,832	26,544
Total fixed income securities | U.S. government agency securities
Schedule of Investments [Line Items]
Amortized Cost	2,401	2,809
Gross Unrealized Gains	1	8
Gross Unrealized Losses	(5)	0
Fair Value	2,397	2,817
Total fixed income securities | Non-U.S. government and agency securities
Schedule of Investments [Line Items]
Amortized Cost	1,211	1,096
Gross Unrealized Gains	0	4
Gross Unrealized Losses	(6)	0
Fair Value	1,205	1,100
Total fixed income securities | Corporate debt securities
Schedule of Investments [Line Items]
Amortized Cost	30,878	24,044
Gross Unrealized Gains	85	263
Gross Unrealized Losses	(265)	(15)
Fair Value	30,698	24,292
Total fixed income securities | U.S. agency mortgage-backed securities
Schedule of Investments [Line Items]
Amortized Cost	2,031	1,846
Gross Unrealized Gains	2	22
Gross Unrealized Losses	(27)	0
Fair Value	2,006	1,868
Total fixed income securities | Commercial paper
Schedule of Investments [Line Items]
Amortized Cost	195
Gross Unrealized Gains	0
Gross Unrealized Losses	0
Fair Value	195
Publicly traded equity securities
Schedule of Investments [Line Items]
Amortized Cost	1,225	1,211
Gross Unrealized Gains	463	333
Gross Unrealized Losses	(74)	(40)
Fair Value	$ 1,614	$ 1,504

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		6 Months Ended
	Jan. 28, 2017	Jan. 23, 2016	Jan. 28, 2017	Jan. 23, 2016
Investments [Abstract]
Gross realized gains	$ 18	$ 16	$ 48	$ 51
Gross realized losses	(48)	(35)	(63)	(71)
Total	$ (30)	$ (19)	$ (15)	$ (20)

Investments (Realized Net Gains

Investments (Realized Net Gains (Losses) Related To Available-For-Sale Investments) (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jan. 28, 2017	Jan. 23, 2016	Jan. 28, 2017	Jan. 23, 2016
Schedule of Investments [Line Items]
Total	$ (30)	$ (19)	$ (15)	$ (20)
Net gains (losses) on investments in publicly traded equity securities
Schedule of Investments [Line Items]
Total	4	2	9	(7)
Net gains (losses) on investments in fixed income securities
Schedule of Investments [Line Items]
Total	$ (34)	$ (21)	$ (24)	$ (13)

Investments (Available-For-Sale

Investments (Available-For-Sale Investments With Gross Unrealized Losses) (Details) - USD ($) $ in Millions	Jan. 28, 2017	Jul. 30, 2016
Schedule of Investments [Line Items]
UNREALIZED LOSSES LESS THAN 12 MONTHS, Fair Value	$ 35,863	$ 5,480
UNREALIZED LOSSES LESS THAN 12 MONTHS, Gross Unrealized Losses	(390)	(49)
UNREALIZED LOSSES 12 MONTHS OR GREATER, Fair Value	441	1,208
UNREALIZED LOSSES 12 MONTHS OR GREATER, Gross Unrealized Losses	(69)	(8)
TOTAL, Fair Value	36,304	6,688
TOTAL, Gross Unrealized Losses	(459)	(57)
Publicly traded equity securities
Schedule of Investments [Line Items]
UNREALIZED LOSSES LESS THAN 12 MONTHS, Fair Value	63	188
UNREALIZED LOSSES LESS THAN 12 MONTHS, Gross Unrealized Losses	(6)	(40)
UNREALIZED LOSSES 12 MONTHS OR GREATER, Fair Value	94	0
UNREALIZED LOSSES 12 MONTHS OR GREATER, Gross Unrealized Losses	(68)	0
TOTAL, Fair Value	157	188
TOTAL, Gross Unrealized Losses	(74)	(40)
Total fixed income securities
Schedule of Investments [Line Items]
UNREALIZED LOSSES LESS THAN 12 MONTHS, Fair Value	35,800	5,292
UNREALIZED LOSSES LESS THAN 12 MONTHS, Gross Unrealized Losses	(384)	(9)
UNREALIZED LOSSES 12 MONTHS OR GREATER, Fair Value	347	1,208
UNREALIZED LOSSES 12 MONTHS OR GREATER, Gross Unrealized Losses	(1)	(8)
TOTAL, Fair Value	36,147	6,500
TOTAL, Gross Unrealized Losses	(385)	(17)
Total fixed income securities | U.S. government securities
Schedule of Investments [Line Items]
UNREALIZED LOSSES LESS THAN 12 MONTHS, Fair Value	16,303	2,414
UNREALIZED LOSSES LESS THAN 12 MONTHS, Gross Unrealized Losses	(82)	(2)
UNREALIZED LOSSES 12 MONTHS OR GREATER, Fair Value	16	0
UNREALIZED LOSSES 12 MONTHS OR GREATER, Gross Unrealized Losses	0	0
TOTAL, Fair Value	16,319	2,414
TOTAL, Gross Unrealized Losses	(82)	(2)
Total fixed income securities | U.S. government agency securities
Schedule of Investments [Line Items]
UNREALIZED LOSSES LESS THAN 12 MONTHS, Fair Value	1,430	144
UNREALIZED LOSSES LESS THAN 12 MONTHS, Gross Unrealized Losses	(5)	0
UNREALIZED LOSSES 12 MONTHS OR GREATER, Fair Value	0	0
UNREALIZED LOSSES 12 MONTHS OR GREATER, Gross Unrealized Losses	0	0
TOTAL, Fair Value	1,430	144
TOTAL, Gross Unrealized Losses	(5)	0
Total fixed income securities | Non-U.S. government and agency securities
Schedule of Investments [Line Items]
UNREALIZED LOSSES LESS THAN 12 MONTHS, Fair Value	1,107	61
UNREALIZED LOSSES LESS THAN 12 MONTHS, Gross Unrealized Losses	(6)	0
UNREALIZED LOSSES 12 MONTHS OR GREATER, Fair Value	6	0
UNREALIZED LOSSES 12 MONTHS OR GREATER, Gross Unrealized Losses	0	0
TOTAL, Fair Value	1,113	61
TOTAL, Gross Unrealized Losses	(6)	0
Total fixed income securities | Corporate debt securities
Schedule of Investments [Line Items]
UNREALIZED LOSSES LESS THAN 12 MONTHS, Fair Value	15,180	2,499
UNREALIZED LOSSES LESS THAN 12 MONTHS, Gross Unrealized Losses	(264)	(7)
UNREALIZED LOSSES 12 MONTHS OR GREATER, Fair Value	325	1,208
UNREALIZED LOSSES 12 MONTHS OR GREATER, Gross Unrealized Losses	(1)	(8)
TOTAL, Fair Value	15,505	3,707
TOTAL, Gross Unrealized Losses	(265)	(15)
Total fixed income securities | U.S. agency mortgage-backed securities
Schedule of Investments [Line Items]
UNREALIZED LOSSES LESS THAN 12 MONTHS, Fair Value	1,780	174
UNREALIZED LOSSES LESS THAN 12 MONTHS, Gross Unrealized Losses	(27)	0
UNREALIZED LOSSES 12 MONTHS OR GREATER, Fair Value	0	0
UNREALIZED LOSSES 12 MONTHS OR GREATER, Gross Unrealized Losses	0	0
TOTAL, Fair Value	1,780	174
TOTAL, Gross Unrealized Losses	$ (27)	$ 0

Investments (Additional Informa

Investments (Additional Information) (Details)	6 Months Ended
	Jan. 28, 2017USD ($)entity	Jan. 23, 2016USD ($)	Jul. 30, 2016USD ($)
Schedule of Investments [Line Items]
Other than temporary impairment, credit losses recognized in earnings, credit losses on debt securities held	$ 0
Average daily balance of securities lending	$ 1,500,000,000	$ 600,000,000
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	0
Investments in privately held companies	$ 1,007,000,000		$ 1,003,000,000
Funding commitments	182,000,000
Variable Interest Entity, Not Primary Beneficiary
Schedule of Investments [Line Items]
Investments in privately held companies	$ 580,000,000

Investments (Maturities Of Fixe

Investments (Maturities Of Fixed Income Securities) (Details) $ in Millions	Jan. 28, 2017USD ($)
Schedule of Investments [Line Items]
Amortized Cost	$ 59,626
Fair Value	59,333
Less than 1 year
Schedule of Investments [Line Items]
Amortized Cost	12,678
Fair Value	12,681
Due in 1 to 2 years
Schedule of Investments [Line Items]
Amortized Cost	16,678
Fair Value	16,667
Due in 2 to 5 years
Schedule of Investments [Line Items]
Amortized Cost	24,535
Fair Value	24,407
Due after 5 years
Schedule of Investments [Line Items]
Amortized Cost	3,704
Fair Value	3,572
Mortgage-backed securities with no single maturity
Schedule of Investments [Line Items]
Amortized Cost	2,031
Fair Value	$ 2,006

Investments (Equity Method and

Investments (Equity Method and Cost Method Investment) (Details) - USD ($) $ in Millions	Jan. 28, 2017	Jul. 30, 2016
Investments, Debt and Equity Securities [Abstract]
Equity method investments	$ 176	$ 174
Cost method investments	831	829
Total	$ 1,007	$ 1,003

Fair Value (Assets and Liabilit

Fair Value (Assets and Liabilities Measured At Fair Value On Recurring Basis) (Details) - USD ($) $ in Millions	Jan. 28, 2017	Jul. 30, 2016
Fair Value, Assets And Liabilities Measured On Recurring Basis [Line Items]
Assets	$ 70,056	$ 64,602
Derivative assets
Fair Value, Assets And Liabilities Measured On Recurring Basis [Line Items]
Assets	118	385
Derivative liabilities
Fair Value, Assets And Liabilities Measured On Recurring Basis [Line Items]
Liabilities	59	54
Cash equivalents: | U.S. government securities
Fair Value, Assets And Liabilities Measured On Recurring Basis [Line Items]
Assets	50	0
Cash equivalents: | Corporate debt securities
Fair Value, Assets And Liabilities Measured On Recurring Basis [Line Items]
Assets	0	43
Cash equivalents: | Money market funds
Fair Value, Assets And Liabilities Measured On Recurring Basis [Line Items]
Assets	8,635	6,049
Cash equivalents: | Commercial paper
Fair Value, Assets And Liabilities Measured On Recurring Basis [Line Items]
Assets	276	0
Cash equivalents: | Certificates of deposit
Fair Value, Assets And Liabilities Measured On Recurring Basis [Line Items]
Assets	30	0
Available-for-sale investments: | U.S. government securities
Fair Value, Assets And Liabilities Measured On Recurring Basis [Line Items]
Assets	22,832	26,544
Available-for-sale investments: | Corporate debt securities
Fair Value, Assets And Liabilities Measured On Recurring Basis [Line Items]
Assets	30,698	24,292
Available-for-sale investments: | Commercial paper
Fair Value, Assets And Liabilities Measured On Recurring Basis [Line Items]
Assets	195	0
Available-for-sale investments: | U.S. government agency securities
Fair Value, Assets And Liabilities Measured On Recurring Basis [Line Items]
Assets	2,397	2,817
Available-for-sale investments: | Non-U.S. government and agency securities
Fair Value, Assets And Liabilities Measured On Recurring Basis [Line Items]
Assets	1,205	1,100
Available-for-sale investments: | U.S. agency mortgage-backed securities
Fair Value, Assets And Liabilities Measured On Recurring Basis [Line Items]
Assets	2,006	1,868
Available-for-sale investments: | Publicly traded equity securities
Fair Value, Assets And Liabilities Measured On Recurring Basis [Line Items]
Assets	1,614	1,504
Level 1
Fair Value, Assets And Liabilities Measured On Recurring Basis [Line Items]
Assets	10,249	7,553
Level 1 | Derivative assets
Fair Value, Assets And Liabilities Measured On Recurring Basis [Line Items]
Assets	0	0
Level 1 | Derivative liabilities
Fair Value, Assets And Liabilities Measured On Recurring Basis [Line Items]
Liabilities	0	0
Level 1 | Cash equivalents: | U.S. government securities
Fair Value, Assets And Liabilities Measured On Recurring Basis [Line Items]
Assets	0	0
Level 1 | Cash equivalents: | Corporate debt securities
Fair Value, Assets And Liabilities Measured On Recurring Basis [Line Items]
Assets	0	0
Level 1 | Cash equivalents: | Money market funds
Fair Value, Assets And Liabilities Measured On Recurring Basis [Line Items]
Assets	8,635	6,049
Level 1 | Cash equivalents: | Commercial paper
Fair Value, Assets And Liabilities Measured On Recurring Basis [Line Items]
Assets	0	0
Level 1 | Cash equivalents: | Certificates of deposit
Fair Value, Assets And Liabilities Measured On Recurring Basis [Line Items]
Assets	0	0
Level 1 | Available-for-sale investments: | U.S. government securities
Fair Value, Assets And Liabilities Measured On Recurring Basis [Line Items]
Assets	0	0
Level 1 | Available-for-sale investments: | Corporate debt securities
Fair Value, Assets And Liabilities Measured On Recurring Basis [Line Items]
Assets	0	0
Level 1 | Available-for-sale investments: | Commercial paper
Fair Value, Assets And Liabilities Measured On Recurring Basis [Line Items]
Assets	0	0
Level 1 | Available-for-sale investments: | U.S. government agency securities
Fair Value, Assets And Liabilities Measured On Recurring Basis [Line Items]
Assets	0	0
Level 1 | Available-for-sale investments: | Non-U.S. government and agency securities
Fair Value, Assets And Liabilities Measured On Recurring Basis [Line Items]
Assets	0	0
Level 1 | Available-for-sale investments: | U.S. agency mortgage-backed securities
Fair Value, Assets And Liabilities Measured On Recurring Basis [Line Items]
Assets	0	0
Level 1 | Available-for-sale investments: | Publicly traded equity securities
Fair Value, Assets And Liabilities Measured On Recurring Basis [Line Items]
Assets	1,614	1,504
Level 2
Fair Value, Assets And Liabilities Measured On Recurring Basis [Line Items]
Assets	59,807	57,048
Level 2 | Derivative assets
Fair Value, Assets And Liabilities Measured On Recurring Basis [Line Items]
Assets	118	384
Level 2 | Derivative liabilities
Fair Value, Assets And Liabilities Measured On Recurring Basis [Line Items]
Liabilities	59	54
Level 2 | Cash equivalents: | U.S. government securities
Fair Value, Assets And Liabilities Measured On Recurring Basis [Line Items]
Assets	50	0
Level 2 | Cash equivalents: | Corporate debt securities
Fair Value, Assets And Liabilities Measured On Recurring Basis [Line Items]
Assets	0	43
Level 2 | Cash equivalents: | Money market funds
Fair Value, Assets And Liabilities Measured On Recurring Basis [Line Items]
Assets	0	0
Level 2 | Cash equivalents: | Commercial paper
Fair Value, Assets And Liabilities Measured On Recurring Basis [Line Items]
Assets	276	0
Level 2 | Cash equivalents: | Certificates of deposit
Fair Value, Assets And Liabilities Measured On Recurring Basis [Line Items]
Assets	30	0
Level 2 | Available-for-sale investments: | U.S. government securities
Fair Value, Assets And Liabilities Measured On Recurring Basis [Line Items]
Assets	22,832	26,544
Level 2 | Available-for-sale investments: | Corporate debt securities
Fair Value, Assets And Liabilities Measured On Recurring Basis [Line Items]
Assets	30,698	24,292
Level 2 | Available-for-sale investments: | Commercial paper
Fair Value, Assets And Liabilities Measured On Recurring Basis [Line Items]
Assets	195	0
Level 2 | Available-for-sale investments: | U.S. government agency securities
Fair Value, Assets And Liabilities Measured On Recurring Basis [Line Items]
Assets	2,397	2,817
Level 2 | Available-for-sale investments: | Non-U.S. government and agency securities
Fair Value, Assets And Liabilities Measured On Recurring Basis [Line Items]
Assets	1,205	1,100
Level 2 | Available-for-sale investments: | U.S. agency mortgage-backed securities
Fair Value, Assets And Liabilities Measured On Recurring Basis [Line Items]
Assets	2,006	1,868
Level 2 | Available-for-sale investments: | Publicly traded equity securities
Fair Value, Assets And Liabilities Measured On Recurring Basis [Line Items]
Assets	0	0
Level 3
Fair Value, Assets And Liabilities Measured On Recurring Basis [Line Items]
Assets	0	1
Level 3 | Derivative assets
Fair Value, Assets And Liabilities Measured On Recurring Basis [Line Items]
Assets	0	1
Level 3 | Derivative liabilities
Fair Value, Assets And Liabilities Measured On Recurring Basis [Line Items]
Liabilities	0	0
Level 3 | Cash equivalents: | U.S. government securities
Fair Value, Assets And Liabilities Measured On Recurring Basis [Line Items]
Assets	0	0
Level 3 | Cash equivalents: | Corporate debt securities
Fair Value, Assets And Liabilities Measured On Recurring Basis [Line Items]
Assets	0	0
Level 3 | Cash equivalents: | Money market funds
Fair Value, Assets And Liabilities Measured On Recurring Basis [Line Items]
Assets	0	0
Level 3 | Cash equivalents: | Commercial paper
Fair Value, Assets And Liabilities Measured On Recurring Basis [Line Items]
Assets	0	0
Level 3 | Cash equivalents: | Certificates of deposit
Fair Value, Assets And Liabilities Measured On Recurring Basis [Line Items]
Assets	0	0
Level 3 | Available-for-sale investments: | U.S. government securities
Fair Value, Assets And Liabilities Measured On Recurring Basis [Line Items]
Assets	0	0
Level 3 | Available-for-sale investments: | Corporate debt securities
Fair Value, Assets And Liabilities Measured On Recurring Basis [Line Items]
Assets	0	0
Level 3 | Available-for-sale investments: | Commercial paper
Fair Value, Assets And Liabilities Measured On Recurring Basis [Line Items]
Assets	0	0
Level 3 | Available-for-sale investments: | U.S. government agency securities
Fair Value, Assets And Liabilities Measured On Recurring Basis [Line Items]
Assets	0	0
Level 3 | Available-for-sale investments: | Non-U.S. government and agency securities
Fair Value, Assets And Liabilities Measured On Recurring Basis [Line Items]
Assets	0	0
Level 3 | Available-for-sale investments: | U.S. agency mortgage-backed securities
Fair Value, Assets And Liabilities Measured On Recurring Basis [Line Items]
Assets	0	0
Level 3 | Available-for-sale investments: | Publicly traded equity securities
Fair Value, Assets And Liabilities Measured On Recurring Basis [Line Items]
Assets	$ 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		6 Months Ended
	Jan. 28, 2017	Jan. 23, 2016	Jan. 28, 2017	Jan. 23, 2016
Fair Value Assets And Liabilities Measured On Nonrecurring Basis [Line Items]
Gains (losses) for assets measured on a nonrecurring basis	$ (88)	$ (76)	$ (177)	$ (93)
Investments in privately held companies (impaired)
Fair Value Assets And Liabilities Measured On Nonrecurring Basis [Line Items]
Gains (losses) for assets measured on a nonrecurring basis	(64)	(39)	(111)	(56)
Purchased intangible assets (impaired)
Fair Value Assets And Liabilities Measured On Nonrecurring Basis [Line Items]
Gains (losses) for assets measured on a nonrecurring basis	0	(37)	(42)	(37)
Property held for sale—land and buildings
Fair Value Assets And Liabilities Measured On Nonrecurring Basis [Line Items]
Gains (losses) for assets measured on a nonrecurring basis	$ (24)	$ 0	$ (24)	$ 0

Fair Value (Additional Informat

Fair Value (Additional Information) (Details) - USD ($) $ in Millions	Jan. 28, 2017	Jul. 30, 2016	Jan. 23, 2016
Fair Value Measurements [Line Items]
Senior notes, carrying value	$ 34,622	$ 28,642
Level 3
Fair Value Measurements [Line Items]
Long term loan receivables and financed service contracts and others carrying value	3,300	2,600
Level 2
Fair Value Measurements [Line Items]
Senior notes, fair value	35,900	30,900
Senior notes, carrying value	34,600	28,600
Remaining carrying value of impaired investments | Level 3
Fair Value Measurements [Line Items]
Remaining carrying value of the investments that were impaired	44		$ 11
Remaining carrying value of impaired purchased intangibles | Level 3
Fair Value Measurements [Line Items]
Remaining carrying value of the investments that were impaired	9		$ 0
Investments In Privately Held Companies
Fair Value Measurements [Line Items]
Carrying value of cost method investments in privately held companies	831	$ 829
Reported Value Measurement
Fair Value Measurements [Line Items]
Carrying value of the property held for sale	$ 11

Borrowings (Schedule Of Short-T

Borrowings (Schedule Of Short-Term Debt) (Details) - USD ($)	Jan. 28, 2017	Jul. 30, 2016
Short-term Debt [Line Items]
Amount	$ 4,451,000,000	$ 4,160,000,000
Current portion of long-term debt
Short-term Debt [Line Items]
Amount	$ 4,151,000,000	$ 4,159,000,000
Effective Rate	1.26%	0.97%
Commercial paper
Short-term Debt [Line Items]
Amount	$ 300,000,000	$ 0
Effective Rate	0.73%	0.00%
Other notes and borrowings
Short-term Debt [Line Items]
Amount	$ 0	$ 1,000,000
Effective Rate	0.00%	2.08%

Borrowings (Additional Informat

Borrowings (Additional Information) (Details) - USD ($)	May 15, 2015	Jan. 28, 2017	Jul. 30, 2016
Debt Instrument [Line Items]
Commercial paper, maximum borrowing limit		$ 3,000,000,000
Short-term debt		4,451,000,000	$ 4,160,000,000
Derivative, notional amount		14,796,000,000	15,414,000,000
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	$ 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 | Eurodollar
Debt Instrument [Line Items]
Interest rate based on % above pre-defined market rate	0.00%
Derivatives designated as hedging instruments: | Interest rate derivatives
Debt Instrument [Line Items]
Derivative, notional amount		9,900,000,000	9,900,000,000
Commercial paper
Debt Instrument [Line Items]
Short-term debt		$ 300,000,000	$ 0

Borrowings (Schedule Of Long-Te

Borrowings (Schedule Of Long-Term Debt) (Details) - USD ($) $ in Millions	6 Months Ended
	Jan. 28, 2017	Sep. 30, 2016	Jul. 30, 2016
Debt Instrument [Line Items]
Total	$ 34,650		$ 28,400
Unaccreted discount/issuance costs	(145)		(137)
Hedge accounting fair value adjustments	117		379
Total	34,622		28,642
Current portion of long-term debt	4,151		4,159
Long-term debt	30,471		24,483
Floating Rate Notes 3-month Libor Plus 0.28% Due March 2017
Debt Instrument [Line Items]
Amount	$ 1,000		$ 1,000
Effective Rate	1.29%		1.03%
Floating Rate Notes 3-month Libor Plus 0.60% Due February 2018
Debt Instrument [Line Items]
Amount	$ 1,000		$ 1,000
Effective Rate	1.58%		1.32%
Floating Rate Notes 3-month Libor Plus 0.31% Due June 2018
Debt Instrument [Line Items]
Amount	$ 900		$ 900
Effective Rate	1.34%		1.03%
Floating Rate Notes 3-month Libor Plus 0.50% Due March 2019
Debt Instrument [Line Items]
Amount	$ 500		$ 500
Effective Rate	1.49%		1.23%
Floating Rate Notes 3-month Libor Plus 0.34% Due September 2019
Debt Instrument [Line Items]
Amount	$ 500		$ 0
Effective Rate	1.38%		0.00%
Fixed-Rate Notes, 1.1%, Due March 2017
Debt Instrument [Line Items]
Interest rate, stated percentage	1.10%
Amount	$ 2,400		$ 2,400
Effective Rate	1.17%		0.87%
Fixed-Rate Notes, 3.15%, Due March 2017
Debt Instrument [Line Items]
Interest rate, stated percentage	3.15%
Amount	$ 750		$ 750
Effective Rate	1.52%		1.22%
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	4.84%		4.76%
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	1.39%		1.08%
Fixed-Rate Notes, 1.40%, Due September 2019
Debt Instrument [Line Items]
Interest rate, stated percentage	1.40%
Amount	$ 1,500		$ 0
Effective Rate	1.48%		0.00%
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	3.47%		3.25%
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	1.55%		1.24%
Fixed-Rate Notes, 1.85%, Due September 2021
Debt Instrument [Line Items]
Interest rate, stated percentage	1.85%
Amount	$ 2,000		$ 0
Effective Rate	1.90%		0.00%
Fixed-Rate Notes, 3.0 %, Due June 15, 2022
Debt Instrument [Line Items]
Interest rate, stated percentage	3.00%
Amount	$ 500		$ 500
Effective Rate	1.80%		1.51%
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		$ 0
Effective Rate	2.27%		0.00%
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	1.66%		1.36%
Fixed-Rate Notes,3.5%, Due June 15, 2025
Debt Instrument [Line Items]
Interest rate, stated percentage	3.50%
Amount	$ 500		$ 500
Effective Rate	1.96%		1.67%
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		$ 0
Effective Rate	2.55%		0.00%
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%
Aggregate debt issuance in February 2016
Debt Instrument [Line Items]
Amount		$ 6,250
One-month LIBOR plus | Floating Rate Notes 3-month Libor Plus 0.28% Due March 2017
Debt Instrument [Line Items]
Three-month LIBOR plus this Percentage	0.28%
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	Jan. 28, 2017	Jul. 30, 2016
Debt Disclosure [Abstract]
2017 (remaining six months)	$ 4,150
2,018	4,750
2,019	5,250
2,020	6,000
2,021	3,000
Thereafter	11,500
Total	$ 34,650	$ 28,400

Derivative Instruments (Derivat

Derivative Instruments (Derivatives Recorded At Fair Value) (Details) - USD ($) $ in Millions	Jan. 28, 2017	Jul. 30, 2016
Derivative [Line Items]
DERIVATIVE ASSETS	$ 118	$ 385
DERIVATIVE LIABILITIES	59	54
Derivatives designated as hedging instruments:
Derivative [Line Items]
DERIVATIVE ASSETS	116	384
DERIVATIVE LIABILITIES	58	53
Derivatives designated as hedging instruments: | Foreign currency derivatives | Other current assets
Derivative [Line Items]
DERIVATIVE ASSETS	5	7
Derivatives designated as hedging instruments: | Foreign currency derivatives | Other current liabilities
Derivative [Line Items]
DERIVATIVE LIABILITIES	58	53
Derivatives designated as hedging instruments: | Interest rate derivatives | Other current assets
Derivative [Line Items]
DERIVATIVE ASSETS	2	11
Derivatives designated as hedging instruments: | Interest rate derivatives | Other current liabilities
Derivative [Line Items]
DERIVATIVE LIABILITIES	0	0
Derivatives designated as hedging instruments: | Interest rate derivatives | Other assets
Derivative [Line Items]
DERIVATIVE ASSETS	109	366
Derivatives designated as hedging instruments: | Interest rate derivatives | Other long-term liabilities
Derivative [Line Items]
DERIVATIVE LIABILITIES	0	0
Derivatives not designated as hedging instruments:
Derivative [Line Items]
DERIVATIVE ASSETS	2	1
DERIVATIVE LIABILITIES	1	1
Derivatives not designated as hedging instruments: | Foreign currency derivatives | Other current assets
Derivative [Line Items]
DERIVATIVE ASSETS	2	0
Derivatives not designated as hedging instruments: | Foreign currency derivatives | Other current liabilities
Derivative [Line Items]
DERIVATIVE LIABILITIES	1	1
Derivatives not designated as hedging instruments: | Equity derivatives/warrants | Other assets
Derivative [Line Items]
DERIVATIVE ASSETS	0	1
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		6 Months Ended
	Jan. 28, 2017	Jan. 23, 2016	Jan. 28, 2017	Jan. 23, 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)	$ (2)	$ (20)	$ (48)	$ (24)
GAINS (LOSSES) RECLASSIFIED FROM AOCI INTO INCOME FOR THE THREE MONTHS ENDED (EFFECTIVE PORTION)	(27)	(5)	(39)	(8)
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)	(2)	(20)	(48)	(24)
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)	(21)	(4)	(30)	(6)
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)	(6)	(1)	(9)	(2)
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)	(3)	11	6	11
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	$ 0	$ 0

Derivative Instruments (Additio

Derivative Instruments (Additional Information) (Details) $ in Millions	6 Months Ended
	Jan. 28, 2017USD ($)derivative	Jul. 30, 2016derivative
Derivative [Line Items]
Net derivative gains or losses to be reclassified from AOCI into earnings in next twelve months | $	$ 59
Fixed Income Securities
Derivative [Line Items]
Number of interest rate derivatives held | 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 (Effec85

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 - Interest rate derivatives - Interest expense - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jan. 28, 2017	Jan. 23, 2016	Jan. 28, 2017	Jan. 23, 2016
Hedge Underlying Gain Loss [Line Items]
GAINS (LOSSES) ON DERIVATIVE INSTRUMENTS FOR THE THREE MONTHS ENDED	$ (175)	$ (16)	$ (266)	$ 111
GAINS (LOSSES) RELATED TO HEDGED ITEMS FOR THE THREE MONTHS ENDED	$ 172	$ 18	$ 262	$ (107)

Derivative Instruments (Effec86

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		6 Months Ended
	Jan. 28, 2017	Jan. 23, 2016	Jan. 28, 2017	Jan. 23, 2016
Derivative Instruments, Gain (Loss) [Line Items]
GAINS (LOSSES) FOR THE PERIOD	$ 14	$ (93)	$ (4)	$ (95)
Foreign currency derivatives | Other income (loss), net
Derivative Instruments, Gain (Loss) [Line Items]
GAINS (LOSSES) FOR THE PERIOD	(20)	(58)	(36)	(54)
Total return swaps—deferred compensation | Operating expenses
Derivative Instruments, Gain (Loss) [Line Items]
GAINS (LOSSES) FOR THE PERIOD	26	(38)	23	(54)
Equity derivatives/warrants | Other income (loss), net
Derivative Instruments, Gain (Loss) [Line Items]
GAINS (LOSSES) FOR THE PERIOD	$ 8	$ 3	$ 9	$ 13

Derivative Instruments (Schedul

Derivative Instruments (Schedule Of Notional Amounts Of Derivatives Outstanding) (Details) - USD ($)	Jan. 28, 2017	Jul. 30, 2016
Derivative [Line Items]
Derivatives	$ 14,796,000,000	$ 15,414,000,000
Derivatives designated as hedging instruments: | Foreign currency derivatives
Derivative [Line Items]
Derivatives	2,142,000,000	2,683,000,000
Derivatives designated as hedging instruments: | Interest rate derivatives
Derivative [Line Items]
Derivatives	9,900,000,000	9,900,000,000
Derivatives designated as hedging instruments: | Net investment hedging instruments
Derivative [Line Items]
Derivatives	236,000,000	298,000,000
Derivatives not designated as hedging instruments: | Foreign currency derivatives
Derivative [Line Items]
Derivatives	2,002,000,000	2,057,000,000
Derivatives not designated as hedging instruments: | Total return swaps—deferred compensation
Derivative [Line Items]
Derivatives	$ 516,000,000	$ 476,000,000

Derivative Instruments (Offsett

Derivative Instruments (Offsetting of Derivative Assets and Liabilities) (Details) - USD ($) $ in Millions	Jan. 28, 2017	Jul. 30, 2016
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Gross Amount of Recognized, Assets	$ 118	$ 385
Gross Amounts Offset, Assets	0	0
Net Amounts Presented, Assets	118	385
Gross Derivative Amounts, Assets	(21)	(23)
Cash Collateral, Assets	(90)	(305)
Net Amount, Assets	7	57
Gross Amount of Recognized, Liabilities	59	54
Gross Amounts Offset, Liabilities	0	0
Net Amount Presented, Liabilities	59	54
Gross Derivative Amounts, Liabilities	(21)	(23)
Cash Collateral, Liabilities	0	0
Net Amount, Liabilities	$ 38	$ 31

Commitments and Contingencies89

Commitments and Contingencies (Schedule Of Future Minimum Lease Payments Under All Noncancelable Operating Leases) (Details) $ in Millions	Jan. 28, 2017USD ($)
Commitments and Contingencies Disclosure [Abstract]
2017 (remaining six months)	$ 213
2,018	334
2,019	208
2,020	142
2,021	83
Thereafter	175
Total	$ 1,155

Commitments and Contingencies90

Commitments and Contingencies (Additional Information) (Details) $ in Millions	May 12, 2016USD ($)	Jan. 28, 2017USD ($)	Jan. 23, 2016USD ($)	Jan. 25, 2014USD ($)	Jul. 27, 2013	Apr. 28, 2012USD ($)	Jan. 28, 2017USD ($)	Jan. 23, 2016USD ($)	Sep. 04, 2014patent	Dec. 31, 2016USD ($)	Oct. 29, 2016USD ($)	Jan. 28, 2017USD ($)	Jul. 30, 2016USD ($)
Contingency [Line Items]
Purchase commitments		$ 4,402					$ 4,402					$ 4,402	$ 3,896
Liability for purchase commitments		172					172					172	159
Future compensation expense & contingent consideration (up to)		220					220					220
Volume of channel partner financing		6,300	$ 6,500				13,200	$ 13,400
Balance of the channel partner financing subject to guarantees		1,200					1,200					1,200	1,100
Financing provided by third parties for leases and loans on which the Company has provided guarantees		30	16				36	39
Charge to product cost of sales		3,305	3,480				6,708	7,333
Adjustments to product cost of sales							3	13
Commitments and contingencies
Brazilian authority claim of import tax evasion by importer tax portion		258					258					258
Brazilian authority claim of import tax evasion by importer interest portion		1,400					1,400					1,400
Brazilian authority claim of import tax evasion by importer penalties portion		1,200					$ 1,200					1,200
SRI International
Contingency [Line Items]
Damages awarded, value	$ 23.7
SRI International | Pending Litigation
Contingency [Line Items]
Number of allegedly infringed patents | patent									2
Damages from Product Defects
Contingency [Line Items]
Charge for expected remediation		125
Maximum
Contingency [Line Items]
Warranty period for products, in years							5 years
Channel partners revolving short-term financing payment term, in days							90 days
End user lease and loan term, in years							3 years
Minimum
Contingency [Line Items]
Warranty period for products, in days							90 days
Channel partners revolving short-term financing payment term, in days							60 days
Insieme Networks Inc
Contingency [Line Items]
Variable interest entities investment						$ 100
Ownership percentage as a result of investment					83.00%
Compensation expense related to acquisitions		12	$ 50				$ 32	101			$ 815
Payments to acquire additional interest in subsidiaries							422	$ 354				811
Insieme Networks Inc | Including compensation that has been expensed through current reporting period | Maximum
Contingency [Line Items]
Commitments and contingencies		831					831					831
Supplier Component Remediation Liability
Contingency [Line Items]
Charge to product cost of sales				$ 655
Commitments and contingencies		105					$ 105					$ 105	$ 276
Supplier Component Remediation Liability | Cost of Goods, Product Line
Contingency [Line Items]
Adjustments to product cost of sales		$ 141								$ 238

Commitments and Contingencies91

Commitments and Contingencies (Schedule of Other Commitments) (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jan. 28, 2017	Jan. 23, 2016	Jan. 28, 2017	Jan. 23, 2016
Acquisition
Contingency [Line Items]
Compensation expense related to acquisitions	$ 73	$ 71	$ 137	$ 144

Commitments and Contingencies92

Commitments and Contingencies (Schedule Of Product Warranty Liability) (Details) - USD ($) $ in Millions	6 Months Ended
	Jan. 28, 2017	Jan. 23, 2016
Movement in Standard and Extended Product Warranty, Increase (Decrease) [Roll Forward]
Balance at beginning of period	$ 414	$ 449
Provisions for warranty issued	367	335
Adjustments for pre-existing warranties	(3)	(13)
Settlements	(352)	(340)
Divestitures	0	(28)
Balance at end of period	$ 426	$ 403

Commitments and Contingencies93

Commitments and Contingencies (Schedule of Financing Guarantees Outstanding) (Details) - USD ($) $ in Millions	Jan. 28, 2017	Jul. 30, 2016
Loss Contingencies [Line Items]
Maximum potential future payments relating to financing guarantees:	$ 412	$ 377
Deferred revenue associated with financing guarantees:	(162)	(161)
Maximum potential future payments relating to financing guarantees, net of associated deferred revenue	250	216
Channel partner
Loss Contingencies [Line Items]
Maximum potential future payments relating to financing guarantees:	318	281
Deferred revenue associated with financing guarantees:	(99)	(85)
End user
Loss Contingencies [Line Items]
Maximum potential future payments relating to financing guarantees:	94	96
Deferred revenue associated with financing guarantees:	$ (63)	$ (76)

Shareholders' Equity (Additiona

Shareholders' Equity (Additional Information) (Details) - USD ($) $ / shares in Units, shares in Millions	Feb. 15, 2017	Jan. 28, 2017	Jan. 23, 2016	Jan. 28, 2017	Jan. 23, 2016
Class of Stock [Line Items]
Cash dividends paid per common share (in dollars per share)		$ 0.26	$ 0.21	$ 0.52	$ 0.42
Payments of dividends				$ 2,612,000,000	$ 2,133,000,000
Cash dividends declared (in dollars per share)				$ 0.52	$ 0.42
Authorized common stock repurchase amount		$ 112,000,000,000		$ 112,000,000,000
Remaining authorized repurchase amount		$ 13,400,000,000		$ 13,400,000,000
Shares repurchased for tax withholdings on vesting of restricted stock units (in shares)				14	16
Payments related to tax withholding for share-based compensation				$ 432,000,000	$ 412,000,000
Subsequent Event
Class of Stock [Line Items]
Cash dividends declared (in dollars per share)	$ 0.29

Shareholders' Equity (Stock Rep

Shareholders' Equity (Stock Repurchase Program) (Details) - USD ($) $ / shares in Units, shares in Millions, $ in Millions	6 Months Ended
	Jan. 28, 2017	Jul. 30, 2016
Shares Repurchased
Cumulative Shares Repurchased, Beginning balance (in shares)	4,591
Repurchase of common stock under the stock repurchase program, Shares Repurchased (in shares)	65
Cumulative Shares Repurchased, Ending balance (in shares)	4,656
Weighted- Average Price per Share
Cumulative Weighted-Average Price per Share, Beginning balance (in dollars per share)	$ 21.04
Repurchase of common stock under the stock repurchase program, Weighted-Average Price per Share (in dollars per share)	30.72
Cumulative Weighted-Average Price per Share, Ending balance (in dollars per share)	$ 21.17
Amount Repurchased
Cumulative Amount Repurchased, Beginning balance	$ 96,597
Repurchase of common stock under the stock repurchase program, Amount Repurchased	2,002
Cumulative Amount Repurchased, Ending balance	98,599
Stock repurchase program
Class of Stock [Line Items]
Stock repurchases pending settlement	$ 56	$ 45

Employee Benefit Plans (Additio

Employee Benefit Plans (Additional Information) (Details) $ / shares in Units, $ in Billions	6 Months Ended
	Jan. 28, 2017USD ($)$ / sharesstock_incentive_planshares	Jan. 23, 2016shares	Jan. 27, 2017$ / shares	Jul. 30, 2016$ / sharesshares	Nov. 12, 2009shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of stock incentive plans | stock_incentive_plan	1
Total compensation cost related to unvested share-based awards | $	$ 2.8
Expected period of recognition of compensation cost, years	2 years 7 months 6 days
Closing stock price (in dollars per share) | $ / shares			$ 30.98
In-the-money exercisable stock option shares (in shares)	6,000,000
Number Exercisable (in shares)	6,000,000			64,000,000
Weighted- average exercise price per share (in dollars per share) | $ / shares	$ 10.55			$ 29.66
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 | Stock awards prior 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	9 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 | Time based stock award | Minimum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based compensation award vesting rights, percentage	20.00%
2005 Plan | Time based stock award | Maximum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based compensation award vesting rights, percentage	25.00%
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%
Employee Stock Purchase Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares reserved for issuance (in shares)	621,000,000
Expiration date for stock options and stock appreciation rights	24 months
Shares eligible for employees purchase, percentage of discount	15.00%
Shares were issued under the Purchase Plan (in shares)	12,000,000	14,000,000
Shares available for issuance (in shares)	111,000,000

Employee Benefit Plans (Summary

Employee Benefit Plans (Summary Of Share-Based Compensation Expense) (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jan. 28, 2017	Jan. 23, 2016	Jan. 28, 2017	Jan. 23, 2016
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Total share-based compensation expense	$ 352	$ 330	$ 724	$ 706
Income tax benefit for share-based compensation	102	103	207	198
Cost of sales—product
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Total share-based compensation expense	19	16	40	29
Cost of sales—service
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Total share-based compensation expense	34	35	67	73
Cost of sales
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Total share-based compensation expense	53	51	107	102
Research and development
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Total share-based compensation expense	129	107	255	221
Sales and marketing
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Total share-based compensation expense	125	126	265	265
General and administrative
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Total share-based compensation expense	45	47	94	104
Restructuring and other
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Total share-based compensation expense	0	(1)	3	14
Operating expenses
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Total share-based compensation expense	$ 299	$ 279	$ 617	$ 604

Employee Benefit Plans (Summa98

Employee Benefit Plans (Summary of Share-Based Awards available for Grant) (Details) - shares shares in Millions	6 Months Ended	12 Months Ended
	Jan. 28, 2017	Jul. 30, 2016
Share-based Compensation Arrangement by Share-based Payment Award, Non-Option Equity Instruments, Outstanding [Roll Forward]
Balance, beginning of period (in shares)	242	276
Restricted stock, stock units, and other share-based awards granted (in shares)	(43)	(96)
Share-based awards canceled/forfeited/expired (in shares)	69	30
Shares withheld for taxes and not issued (in shares)	20	30
Other (in shares)		2
Balance, end of period (in shares)	288	242

Employee Benefit Plans (Summa99

Employee Benefit Plans (Summary Of Restricted Stock And Stock Unit Activity) (Details) - Restricted Stock/Stock Units - USD ($) $ / shares in Units, $ in Millions	6 Months Ended	12 Months Ended
	Jan. 28, 2017	Jul. 30, 2016
Restricted Stock and Stock Unit Activity [Roll Forward]
Beginning balance, Restricted Stock/Stock Units (in shares)	145,000,000	143,000,000
Granted and assumed (in shares)	29,000,000	70,000,000
Vested (in shares)	(39,000,000)	(54,000,000)
Canceled/forfeited (in shares)	(11,000,000)	(14,000,000)
Ending balance, Restricted Stock/Stock Units (in shares)	124,000,000	145,000,000
Weighted- Average Price per Share
Beginning balance, Weighted-Average Grant-Date Fair Value per Share (in dollars per share)	$ 24.26	$ 22.08
Granted and assumed, Weighted-Average Grant-Date Fair Value per Share (in dollars per share)	28.17	25.69
Vested, Weighted-Average Grant-Date Fair Value per Share (in dollars per share)	22.18	20.68
Canceled/forfeited, Weighted-Average Grant-Date Fair Value per Share (in dollars per share)	24.99	22.86
Ending balance, Weighted-Average Grant-Date Fair Value per Share (in dollars per share)	$ 25.76	$ 24.26
Vested, Aggregate Fair Value	$ 1,210	$ 1,428

Employee Benefit Plans (Summ100

Employee Benefit Plans (Summary Of Stock Option Activity) (Details) - $ / shares	6 Months Ended	12 Months Ended
	Jan. 28, 2017	Jul. 30, 2016
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding [Roll Forward]
Beginning balance, Number Outstanding, options (in shares)	73,000,000	103,000,000
Assumed from acquisitions (in shares)	1,000,000	18,000,000
Exercised (in shares)	(6,000,000)	(32,000,000)
Canceled/forfeited/expired (in shares)	(55,000,000)	(16,000,000)
Ending balance, Number Outstanding, options (in shares)	13,000,000	73,000,000
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Exercise Price [Abstract]
Weighted-Average Exercise Price per Share, Beginning Balance (in dollars per share)	$ 26.78	$ 28.68
Assumed from acquisitions, Weighted-Average Exercise Price per Share (in dollars per share)	1.59	5.17
Exercised, Weighted-Average Exercise Price per Share (in dollars per share)	17.43	19.22
Canceled/forfeited/expired, Weighted-Average Exercise Price per Share (in dollars per share)	31.95	30.01
Weighted-Average Exercise Price per Share, Ending Balance (in dollars per share)	$ 8.23	$ 26.78

Employee Benefit Plans (Summ101

Employee Benefit Plans (Summary Of Significant Ranges Of Outstanding And Exercisable Stock Options) (Details) - USD ($) $ / shares in Units, $ in Millions	6 Months Ended
	Jan. 28, 2017	Jul. 30, 2016	Jul. 25, 2015
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number Outstanding (in shares)	13,000,000	73,000,000	103,000,000
Weighted- Average Remaining Contractual Life (in Years)	5 years 9 months 18 days
Weighted- Average Exercise Price per Share (in dollars per share)	$ 8.23	$ 26.78	$ 28.68
Aggregate Intrinsic Value (Outstanding Options)	$ 290
Number Exercisable (in shares)	6,000,000	64,000,000
Weighted- Average Exercise Price per Share (in dollars per share)	$ 10.55	$ 29.66
Aggregate Intrinsic Value (Exercisable Options)	$ 129
$ 0.01 – 20.00
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number Outstanding (in shares)	11,000,000
Weighted- Average Remaining Contractual Life (in Years)	6 years 6 months
Weighted- Average Exercise Price per Share (in dollars per share)	$ 5.84
Aggregate Intrinsic Value (Outstanding Options)	$ 280
Number Exercisable (in shares)	4,000,000
Weighted- Average Exercise Price per Share (in dollars per share)	$ 5.73
Aggregate Intrinsic Value (Exercisable Options)	$ 120
$ 20.01 – 25.00
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number Outstanding (in shares)	1,000,000
Weighted- Average Remaining Contractual Life (in Years)	1 month 6 days
Weighted- Average Exercise Price per Share (in dollars per share)	$ 23.41
Aggregate Intrinsic Value (Outstanding Options)	$ 3
Number Exercisable (in shares)	1,000,000
Weighted- Average Exercise Price per Share (in dollars per share)	$ 23.41
Aggregate Intrinsic Value (Exercisable Options)	$ 2
$ 25.01 – 30.00
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number Outstanding (in shares)	1,000,000
Weighted- Average Remaining Contractual Life (in Years)	4 months 24 days
Weighted- Average Exercise Price per Share (in dollars per share)	$ 25.55
Aggregate Intrinsic Value (Outstanding Options)	$ 7
Number Exercisable (in shares)	1,000,000
Weighted- Average Exercise Price per Share (in dollars per share)	$ 25.55
Aggregate Intrinsic Value (Exercisable Options)	$ 7
Minimum | $ 0.01 – 20.00
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
Minimum | $ 20.01 – 25.00
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Weighted- Average Exercise Price per Share (in dollars per share)	20.01
Weighted- Average Exercise Price per Share (in dollars per share)	20.01
Minimum | $ 25.01 – 30.00
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Weighted- Average Exercise Price per Share (in dollars per share)	25.01
Weighted- Average Exercise Price per Share (in dollars per share)	25.01
Maximum | $ 0.01 – 20.00
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Weighted- Average Exercise Price per Share (in dollars per share)	20
Weighted- Average Exercise Price per Share (in dollars per share)	20
Maximum | $ 20.01 – 25.00
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Weighted- Average Exercise Price per Share (in dollars per share)	25
Weighted- Average Exercise Price per Share (in dollars per share)	25
Maximum | $ 25.01 – 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 (Summ102

Employee Benefit Plans (Summary Assumptions Related To And Valuation Of Employee Share-Based Awards (Time-Based RSU and PRSU)) (Details) - $ / shares	3 Months Ended		6 Months Ended
	Jan. 28, 2017	Jan. 23, 2016	Jan. 28, 2017	Jan. 23, 2016
RESTRICTED STOCK UNITS
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares granted (in shares)	15,000,000	27,000,000	23,000,000	36,000,000
Grant date fair value per share (in dollars per share)	$ 27.68	$ 25.25	$ 27.96	$ 24.93
Expected dividend yield	3.40%	3.10%	3.40%	3.10%
Range of risk-free interest rates, minimum	0.00%	0.10%	0.00%	0.00%
Range of risk-free interest rates, maximum	1.50%	1.20%	1.50%	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	1,000,000	6,000,000	5,000,000
Grant date fair value per share (in dollars per share)	$ 27.90	$ 25.32	$ 28.78	$ 24.71
Expected dividend yield	3.40%	3.10%	3.40%	3.20%
Range of risk-free interest rates, minimum	0.30%	0.00%	0.10%	0.00%
Range of risk-free interest rates, maximum	1.50%	1.20%	1.50%	1.20%
Range of expected volatilities for index, minimum		15.30%	16.70%	15.30%
Range of expected volatilities for index, maximum		54.30%	46.80%	54.30%

Comprehensive Income (AOCI comp

Comprehensive Income (AOCI components) (Details) - USD ($) $ in Millions	6 Months Ended
	Jan. 28, 2017	Jan. 23, 2016
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Balance, beginning of period	$ 63,586
Balance, end of period	63,811
Net Unrealized Gains (Losses) on Available-for-Sale Investments
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Balance, beginning of period	413	$ 310
Other comprehensive income (loss) before reclassifications attributable to Cisco Systems, Inc.	(559)	(515)
(Gains) losses reclassified out of AOCI	15	20
Tax benefit (expense)	148	198
Balance, end of period	17	13
Net Unrealized Gains (Losses) Cash Flow Hedging Instruments
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Balance, beginning of period	(59)	(16)
Other comprehensive income (loss) before reclassifications attributable to Cisco Systems, Inc.	(48)	(24)
(Gains) losses reclassified out of AOCI	39	8
Tax benefit (expense)	1	2
Balance, end of period	(67)	(30)
Cumulative Translation Adjustment and Actuarial Gains (Losses)
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Balance, beginning of period	(680)	(233)
Other comprehensive income (loss) before reclassifications attributable to Cisco Systems, Inc.	(69)	(524)
(Gains) losses reclassified out of AOCI	(1)	1
Tax benefit (expense)	(1)	(34)
Balance, end of period	(751)	(790)
Accumulated Other Comprehensive Income (Loss)
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Balance, beginning of period	(326)	61
Other comprehensive income (loss) before reclassifications attributable to Cisco Systems, Inc.	(676)	(1,063)
(Gains) losses reclassified out of AOCI	53	29
Tax benefit (expense)	148	166
Balance, end of period	$ (801)	$ (807)

Comprehensive Income (Reclassif

Comprehensive Income (Reclassification out of other comprehensive income) (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jan. 28, 2017	Jan. 23, 2016	Jan. 28, 2017	Jan. 23, 2016
Reclassification Adjustment out of Accumulated Other Comprehensive Income on Derivatives [Line Items]
Total amounts reclassified out of AOCI	$ (56)	$ (24)	$ (53)	$ (29)
Cumulative translation adjustment and actuarial gains and losses
Reclassification Adjustment out of Accumulated Other Comprehensive Income on Derivatives [Line Items]
(Gains) losses reclassified out of AOCI	1	0	1	(1)
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	(30)	(19)	(15)	(20)
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	(21)	(4)	(30)	(6)
Cost of sales—service	(6)	(1)	(9)	(2)
Net unrealized gains and losses on cash flow hedging instruments	$ (27)	$ (5)	$ (39)	$ (8)

Income Taxes (Income Before Pro

Income Taxes (Income Before Provision For Income Taxes) (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jan. 28, 2017	Jan. 23, 2016	Jan. 28, 2017	Jan. 23, 2016
Income Tax Disclosure [Abstract]
Income before provision for income taxes	$ 2,963	$ 3,306	$ 5,916	$ 6,443
Provision for income taxes	$ 615	$ 159	$ 1,246	$ 866
Effective tax rate	20.80%	4.80%	21.10%	13.40%

Income Taxes (Additional Inform

Income Taxes (Additional Information) (Details) $ in Millions	Jan. 28, 2017USD ($)
Income Tax Disclosure [Abstract]
Unrecognized tax benefits	$ 1,800
Unrecognized tax benefits that would impact effective tax rate	1,300
Unrecognized tax benefit that could be reduced in next 12 months	$ 150

Segment Information and Majo107

Segment Information and Major Customers (Additional Information) (Details) $ in Millions	3 Months Ended		6 Months Ended
	Jan. 28, 2017USD ($)	Jan. 23, 2016USD ($)	Jan. 28, 2017USD ($)segment	Jan. 23, 2016USD ($)	Jul. 30, 2016USD ($)
Segment Reporting Information [Line Items]
Number of geographic segments | segment			3
Revenue, total	$ 11,580	$ 11,927	$ 23,932	$ 24,609
United States
Segment Reporting Information [Line Items]
Revenue, total	5,900	$ 6,000	12,500	$ 12,900
Cash and cash equivalents and investments	9,600		9,600		$ 5,900
International
Segment Reporting Information [Line Items]
Cash and cash equivalents and investments	$ 62,300		$ 62,300		$ 59,800

Segment Information and Majo108

Segment Information and Major Customers (Summary Of Reportable Segments) (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jan. 28, 2017	Jan. 23, 2016	Jan. 28, 2017	Jan. 23, 2016
Segment Reporting Information [Line Items]
Revenue, total	$ 11,580	$ 11,927	$ 23,932	$ 24,609
Gross margin	7,276	7,432	15,160	15,264
Operating Segments | Americas
Segment Reporting Information [Line Items]
Revenue, total	6,660	6,911	14,103	14,703
Gross margin	4,288	4,411	9,121	9,354
Operating Segments | EMEA
Segment Reporting Information [Line Items]
Revenue, total	3,065	3,093	6,078	6,187
Gross margin	2,012	2,011	4,025	4,000
Operating Segments | APJC
Segment Reporting Information [Line Items]
Revenue, total	1,855	1,923	3,751	3,719
Gross margin	1,121	1,184	2,325	2,262
Segment Reconciling Items
Segment Reporting Information [Line Items]
Gross margin	7,421	7,606	15,471	15,616
Intersegment Eliminations
Segment Reporting Information [Line Items]
Gross margin	$ (145)	$ (174)	$ (311)	$ (352)

Segment Information and Majo109

Segment Information and Major Customers (Summary Of Net Revenue For Groups Of Similar Products And Services) (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jan. 28, 2017	Jan. 23, 2016	Jan. 28, 2017	Jan. 23, 2016
Segment Reporting, Revenue Reconciling Item [Line Items]
Revenue, Net	$ 11,580	$ 11,927	$ 23,932	$ 24,609
Switching
Segment Reporting, Revenue Reconciling Item [Line Items]
Revenue, Net	3,305	3,475	7,021	7,484
NGN Routing
Segment Reporting, Revenue Reconciling Item [Line Items]
Revenue, Net	1,817	2,014	3,906	3,983
Collaboration
Segment Reporting, Revenue Reconciling Item [Line Items]
Revenue, Net	1,062	1,019	2,143	2,134
Data Center
Segment Reporting, Revenue Reconciling Item [Line Items]
Revenue, Net	790	822	1,624	1,681
Wireless
Segment Reporting, Revenue Reconciling Item [Line Items]
Revenue, Net	632	616	1,264	1,262
Security
Segment Reporting, Revenue Reconciling Item [Line Items]
Revenue, Net	528	462	1,068	947
Service Provider Video
Segment Reporting, Revenue Reconciling Item [Line Items]
Revenue, Net	241	499	512	1,186
Other
Segment Reporting, Revenue Reconciling Item [Line Items]
Revenue, Net	116	76	255	150
Product
Segment Reporting, Revenue Reconciling Item [Line Items]
Revenue, Net	8,491	8,983	17,793	18,827
Service
Segment Reporting, Revenue Reconciling Item [Line Items]
Revenue, Net	$ 3,089	2,944	$ 6,139	5,782
SP Video CPE Business
Segment Reporting, Revenue Reconciling Item [Line Items]
Revenue, Net		$ 93		$ 504

Segment Information and Majo110

Segment Information and Major Customers (Property and Equipment Information for Geographic Areas) (Details) - USD ($) $ in Millions	Jan. 28, 2017	Jul. 30, 2016
Segment Reporting, Asset Reconciling Item [Line Items]
Property and equipment, net	$ 3,422	$ 3,506
United States
Segment Reporting, Asset Reconciling Item [Line Items]
Property and equipment, net	2,797	2,822
International
Segment Reporting, Asset Reconciling Item [Line Items]
Property and equipment, net	$ 625	$ 684

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		6 Months Ended
	Jan. 28, 2017	Jan. 23, 2016	Jan. 28, 2017	Jan. 23, 2016
Earnings Per Share [Abstract]
Net income	$ 2,348	$ 3,147	$ 4,670	$ 5,577
Weighted-average shares—basic (in shares)	5,015	5,070	5,021	5,075
Effect of dilutive potential common shares (in shares)	25	27	33	31
Weighted-average shares—diluted (in shares)	5,040	5,097	5,054	5,106
Net income per share—basic (in dollars per share)	$ 0.47	$ 0.62	$ 0.93	$ 1.10
Net income per share—diluted (in dollars per share)	$ 0.47	$ 0.62	$ 0.92	$ 1.09
Antidilutive employee share-based awards, excluded (in shares)	20	98	103	133