Cisco Systems (CSCO) 10-Q 22 Nov 13 2014 Q1 Quarterly report Financial data

Document_And_Entity_Informatio

Document And Entity Information	3 Months Ended
	Oct. 26, 2013	Nov. 15, 2013
Document Information [Line Items]	'	'
Document Type	'10-Q	'
Amendment Flag	'false	'
Document Period End Date	26-Oct-13	'
Document Fiscal Period Focus	'Q1	'
Document Fiscal Year Focus	'2014	'
Trading Symbol	'CSCO	'
Entity Registrant Name	'CISCO SYSTEMS, INC.	'
Entity Central Index Key	'0000858877	'
Entity Current Reporting Status	'Yes	'
Current Fiscal Year End Date	'--07-26	'
Entity Filer Category	'Large Accelerated Filer	'
Entity Common Stock, Shares Outstanding	'	5,346,617,505

Consolidated_Balance_Sheets

Consolidated Balance Sheets (USD $)	Oct. 26, 2013	Jul. 27, 2013
In Millions, unless otherwise specified
Current assets:	'	'
Cash and cash equivalents	$5,254	$7,925
Investments	42,947	42,685
Accounts receivable, net of allowance for doubtful accounts of $245 at October 26, 2013 and $228 at July 27, 2013	5,188	5,470
Inventories	1,466	1,476
Financing receivables, net	4,132	4,037
Deferred tax assets	2,333	2,616
Other current assets	1,476	1,312
Total current assets	62,796	65,521
Property and equipment, net	3,273	3,322
Financing receivables, net	3,893	3,911
Goodwill	23,804	21,919
Purchased intangible assets, net	3,835	3,403
Other assets	3,140	3,115
TOTAL ASSETS	100,741	101,191
Current liabilities:	'	'
Short-term debt	3,279	3,283
Accounts payable	1,025	1,029
Income taxes payable	0	192
Accrued compensation	2,771	3,182
Deferred revenue	9,212	9,262
Other current liabilities	5,441	5,048
Total current liabilities	21,728	21,996
Long-term debt	12,947	12,928
Income taxes payable	1,575	1,748
Deferred revenue	3,995	4,161
Other long-term liabilities	1,587	1,230
Total liabilities	41,832	42,063
Commitments and contingencies (Note 12)	'	'
Cisco shareholders' equity:	'	'
Preferred stock, no par value: 5 shares authorized; none issued and outstanding	0	0
Common stock and additional paid-in capital, $0.001 par value: 20,000 shares authorized; 5,351 and 5,389 shares issued and outstanding at October 26, 2013 and July 27, 2013, respectively	42,166	42,297
Retained earnings	15,959	16,215
Accumulated other comprehensive income	772	608
Total Cisco shareholders' equity	58,897	59,120
Noncontrolling interests	12	8
Total equity	58,909	59,128
TOTAL LIABILITIES AND EQUITY	$100,741	$101,191

Consolidated_Balance_Sheets_Pa

Consolidated Balance Sheets (Parenthetical) (USD $)	Oct. 26, 2013	Jul. 27, 2013
In Millions, except Per Share data, unless otherwise specified
Statement of Financial Position [Abstract]	'	'
Accounts receivable, net of allowance for doubtful accounts of $245 at October 26, 2013 and $228 at July 27, 2013	$245	$228
Preferred Stock, No Par Value	$0	$0
Preferred stock, shares authorized	5	5
Preferred stock, issued	0	0
Preferred stock, outstanding	0	0
Common stock, par value	$0.00	$0.00
Common stock, shares authorized	20,000	20,000
Common stock, shares issued	5,351	5,389
Common stock, shares outstanding	5,351	5,389

Consolidated_Statements_Of_Ope

Consolidated Statements Of Operations (USD $)	3 Months Ended
In Millions, except Per Share data, unless otherwise specified	Oct. 26, 2013	Oct. 27, 2012
REVENUE:	'	'
Product	$9,397	$9,297
Service	2,688	2,579
Total revenue	12,085	11,876
COST OF SALES:	'	'
Product	3,747	3,748
Service	931	889
Total cost of sales	4,678	4,637
GROSS MARGIN	7,407	7,239
OPERATING EXPENSES:	'	'
Research and development	1,724	1,431
Sales and marketing	2,411	2,416
General and administrative	515	560
Amortization of Purchased Intangible Assets	65	122
Restructuring and other charges	237	59
Total operating expenses	4,952	4,588
OPERATING INCOME	2,455	2,651
Interest income	169	161
Interest expense	-140	-148
Other income (loss), net	56	-33
Interest and other income (loss), net	85	-20
INCOME BEFORE PROVISION FOR INCOME TAXES	2,540	2,631
Provision for income taxes	544	539
NET INCOME	$1,996	$2,092
Net income per share-basic (in dollars per share)	$0.37	$0.39
Net income per share-diluted (in dollars per share)	$0.37	$0.39
Shares used in per-share calculation-basic (in shares)	5,378	5,301
Shares used in per-share calculation-diluted (in shares)	5,430	5,334
Cash dividends declared per common share (in dollars per share)	$0.17	$0.14

Consolidated_Comprehensive_Inc

Consolidated Comprehensive Income (USD $)	3 Months Ended
In Millions, unless otherwise specified	Oct. 26, 2013	Oct. 27, 2012
Statement of Comprehensive Income [Abstract]	'	'
Net income	$1,996	$2,092
Change in net unrealized gains, net of tax benefit (expense) of $(53) and $1 for the three months ended October 26, 2013 and October 27, 2012, respectively	121	4
Net gains reclassified into earnings, net of tax expense of $31 and $10 for the three months ended October 26, 2013 and October 27, 2012, respectively	-52	-17
Total available-for-sale investments	69	-13
Change in unrealized gains and losses, net of tax expense of $3 and $0 for the three months ended October 26, 2013 and October 27, 2012, respectively	35	66
Net (gains) losses reclassified into earnings	-9	5
Total cash flow hedging instruments	26	71
Net change in cumulative translation adjustment and other, net of tax expense of $3 and $10 for the three months ended October 26, 2013 and October 27, 2012, respectively	73	114
Other comprehensive income	168	172
Comprehensive Income (Loss), Net of Tax, Including Portion Attributable to Noncontrolling Interest	2,164	2,264
Comprehensive (Income) Loss, Net of Tax, Attributable to Noncontrolling Interest	-4	0
Comprehensive income attributable to Cisco Systems, Inc.	$2,160	$2,264

Consolidated_Comprehensive_Inc1

Consolidated Comprehensive Income (Parenthetical) (USD $)	3 Months Ended
In Millions, unless otherwise specified	Oct. 26, 2013	Oct. 27, 2012
Other Comprehensive Income (Loss), Tax [Abstract]	'	'
Other Comprehensive Income (Loss), Available-for-sale Securities, Tax	($53)	$1
Other Comprehensive Income (Loss), Reclassification Adjustment for Sale of Securities Included in Net Income, Tax	31	10
Other Comprehensive Income (Loss), Derivatives Qualifying as Hedges, Tax	-3	0
Other Comprehensive Income (Loss), Foreign Currency Translation Adjustment, Tax	($3)	($10)

Consolidated_Statements_Of_Cas

Consolidated Statements Of Cash Flows (USD $)	3 Months Ended
In Millions, unless otherwise specified	Oct. 26, 2013	Oct. 27, 2012
Cash flows from operating activities:	'	'
Net income	$1,996	$2,092
Adjustments to reconcile net income to net cash provided by operating activities:	'	'
Depreciation, amortization, and other	591	615
Share-based compensation expense	309	306
Provision for receivables	23	7
Deferred income taxes	130	135
Excess tax benefits from share-based compensation	-55	-15
(Gains) losses on investments and other, net	-108	12
Change in operating assets and liabilities, net of effects of acquisitions and divestitures:	'	'
Accounts receivable	361	615
Inventories	22	42
Financing receivables	-37	-110
Other assets	28	99
Accounts payable	-29	-19
Income taxes, net	-389	-372
Accrued compensation	-460	-359
Deferred revenue	-307	-295
Other liabilities	574	-288
Net Cash Provided by (Used in) Operating Activities, Continuing Operations	2,649	2,465
Cash flows from investing activities:	'	'
Purchases of investments	-8,835	-8,213
Proceeds from sales of investments	4,733	2,447
Proceeds from maturities of investments	4,058	4,388
Acquisition of property and equipment	-315	-265
Acquisition of businesses, net of cash and cash equivalents acquired	-2,447	-4,912
Payments to Acquire Other Investments	-134	-9
Return of Investments In Privately Held Companies	33	12
Proceeds from sales of property and equipment	156	24
Other	-4	-2
Net cash used in investing activities	-2,755	-6,530
Cash flows from financing activities:	'	'
Issuances of common stock	444	117
Repurchases of stock- repurchase program	-1,898	-183
Shares repurchased for tax withholdings on vesting of restricted stock units	-286	-203
Short-term borrowings, maturities less than 90 days, net	-2	23
Issuances of debt, maturities greater than 90 days	4	0
Excess tax benefits from share-based compensation	55	15
Dividends paid	-914	-744
Other	32	14
Net cash used in financing activities	-2,565	-961
Net decrease in cash and cash equivalents	-2,671	-5,026
Cash and cash equivalents, beginning of period	7,925	9,799
Cash and cash equivalents, end of period	5,254	4,773
Cash paid for:	'	'
Interest	221	221
Cash paid for income taxes, net	$803	$776

Consolidated_Statements_Of_Equ

Consolidated Statements Of Equity (USD $)	Total	Common Stock [Member]	Common Stock Including Additional Paid in Capital [Member]	Retained Earnings [Member]	Accumulated Other Comprehensive Income (Loss) [Member]	Parent [Member]	Noncontrolling Interest [Member]
In Millions, unless otherwise specified	USD ($)		USD ($)	USD ($)	USD ($)	USD ($)	USD ($)
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest at Jul. 28, 2012	$51,301	'	'	'	'	'	'
Stockholders' Equity Attributable to Noncontrolling Interest at Jul. 28, 2012	'	'	'	'	'	'	15
Stockholders' Equity Attributable to Parent at Jul. 28, 2012	'	'	39,271	11,354	661	51,286	'
Shares, Issued at Jul. 28, 2012	'	5,298	'	'	'	'	'
Increase (Decrease) in Stockholders' Equity [Roll Forward]	'	'	'	'	'	'	'
Net income	2,092	'	'	2,092	'	2,092	'
Other Comprehensive Income (Loss), Net of Tax	172	'	'	'	172	172	0
Stock Issued During Period, (In shares)	'	39	'	'	'	'	'
Stock Issued During Period, Value, New Issues	117	'	117	'	'	117	'
Repurchased Shares During Period ( In shares)	'	-15	'	'	'	'	'
Stock Repurchased During Period, Value	-253	'	-114	-139	'	-253	'
Shares Repurchased In Settlement Of Employee Tax Withholding Obligations ( In shares)	-11	-11	'	'	'	'	'
Adjustments Related to Tax Withholding for Share-based Compensation	-203	'	-203	'	'	-203	'
Cash dividends declared	-744	'	'	-744	'	-744	'
Adjustment to Additional Paid in Capital, Income Tax Effect from Share-based Compensation, Net	-87	'	-87	'	'	-87	'
Adjustments to Additional Paid in Capital, Share-based Compensation, Requisite Service Period Recognition	306	'	306	'	'	306	'
Stockholders' Equity Attributable to Parent at Oct. 27, 2012	'	'	39,290	12,563	833	52,686	'
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest at Oct. 27, 2012	52,701	'	'	'	'	'	'
Stockholders' Equity Attributable to Noncontrolling Interest at Oct. 27, 2012	'	'	'	'	'	'	15
Shares, Issued at Oct. 27, 2012	'	5,311	'	'	'	'	'
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest at Jul. 27, 2013	59,128	'	'	'	'	'	'
Stockholders' Equity Attributable to Noncontrolling Interest at Jul. 27, 2013	8	'	'	'	'	'	8
Stockholders' Equity Attributable to Parent at Jul. 27, 2013	59,120	'	42,297	16,215	608	59,120	'
Shares, Issued at Jul. 27, 2013	'	5,389	'	'	'	'	'
Increase (Decrease) in Stockholders' Equity [Roll Forward]	'	'	'	'	'	'	'
Net income	1,996	'	'	1,996	'	1,996	'
Other Comprehensive Income (Loss), Net of Tax	168	'	'	'	164	164	4
Stock Issued During Period, (In shares)	'	58	'	'	'	'	'
Stock Issued During Period, Value, New Issues	444	'	444	'	'	444	'
Repurchased Shares During Period ( In shares)	-84	-84	'	'	'	'	'
Stock Repurchased During Period, Value	-2,000	'	-662	-1,338	'	-2,000	'
Shares Repurchased In Settlement Of Employee Tax Withholding Obligations ( In shares)	-12	-12	'	'	'	'	'
Adjustments Related to Tax Withholding for Share-based Compensation	-286	'	-286	'	'	-286	'
Cash dividends declared	-914	'	'	-914	'	-914	'
Adjustment to Additional Paid in Capital, Income Tax Effect from Share-based Compensation, Net	35	'	35	'	'	35	'
Adjustments to Additional Paid in Capital, Share-based Compensation, Requisite Service Period Recognition	309	'	309	'	'	309	'
Stock Issued During Period, Value, Acquisitions	29	'	29	'	'	29	'
Stockholders' Equity Attributable to Parent at Oct. 26, 2013	58,897	'	42,166	15,959	772	58,897	'
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest at Oct. 26, 2013	58,909	'	'	'	'	'	'
Stockholders' Equity Attributable to Noncontrolling Interest at Oct. 26, 2013	$12	'	'	'	'	'	$12
Shares, Issued at Oct. 26, 2013	'	5,351	'	'	'	'	'

Recovered_Sheet1

Consolidated Statements of Equity (Parenthetical) (USD $)	3 Months Ended
	Oct. 26, 2013	Oct. 27, 2012
Common Stock, Dividends, Per Share, Declared	$0.17	$0.14

Supplemental_Information

Supplemental Information	3 Months Ended
	Oct. 26, 2013
Stockholders' Equity Note [Abstract]	'
Treasury Stock [Text Block]	'
	In September 2001, the Company’s Board of Directors authorized a stock repurchase program. As of October 26, 2013, the Company’s Board of Directors had authorized an aggregate repurchase of up to $82 billion of common stock under this program, with no termination date.
	In November 2013, the Company’s Board of Directors authorized up to $15 billion in additional repurchases of common stock under this program, with no termination date. 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	3,952	$	18,664	$	62,242	$	80,906

Basis_Of_Presentation

Basis Of Presentation	3 Months Ended
	Oct. 26, 2013
Basis Of Presentation [Abstract]	'
Basis Of Presentation	'
	1	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 2014 and fiscal 2013 are each 52-week fiscal years. The Consolidated Financial Statements include the accounts of Cisco and its subsidiaries. All significant intercompany accounts and transactions have been eliminated. The Company conducts business globally and is primarily managed on a geographic basis in the following three geographic segments: the Americas; Europe, Middle East, and Africa (EMEA); and Asia Pacific, Japan, and China (APJC).
	The accompanying financial data as of October 26, 2013 and for the three months ended October 26, 2013 and October 27, 2012 has been prepared by the Company, without audit, pursuant to the rules and regulations of the 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 27, 2013 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 27, 2013.
	The Company consolidates its investments in a venture fund managed by SOFTBANK Corp. and its affiliates (“SOFTBANK”) and Insieme Networks, Inc. (“Insieme”) as these are variable interest entities 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 and the loss attributable to the noncontrolling interests in Insieme 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 adjustments (which include normal recurring adjustments, except as disclosed herein) necessary to present fairly the statement of financial position as of October 26, 2013 and the results of operations, cash flows and equity for the three months ended October 26, 2013 and October 27, 2012, as applicable, have been made. The results of operations for the three months ended October 26, 2013 are not necessarily indicative of the operating results for the full fiscal year or any future periods.
	Certain reclassifications have been made to prior period amounts 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_Pronouncemen

Recent Accounting Pronouncements	3 Months Ended
	Oct. 26, 2013
Accounting Policies [Abstract]	'
Recent Accounting Pronouncements	'
	2	Recent Accounting Pronouncements
	(a)	New Accounting Updates Recently Adopted
	In December 2011, the FASB issued an accounting standard update requiring enhanced disclosures about certain financial instruments and derivative instruments that are offset in the statement of financial position or that are subject to enforceable master netting arrangements or similar agreements. This accounting standard became effective for the Company in the first quarter of fiscal 2014. As a result of the application of this accounting standard update, the Company has provided additional disclosures in Note 11.
	In July 2012, the FASB issued an accounting standard update intended to simplify how an entity tests indefinite-lived intangible assets other than goodwill for impairment by providing entities with an option to perform a qualitative assessment to determine whether further impairment testing is necessary. This accounting standard update became effective for the Company beginning in the first quarter of fiscal 2014, and its adoption did not have any impact on the Company’s Consolidated Financial Statements.
	In February 2013, the FASB issued an accounting standard update to require reclassification adjustments from other comprehensive income to be presented either in the financial statements or in the notes to the financial statements. This accounting standard became effective for the Company in the first quarter of fiscal 2014. As a result of the application of this accounting standard update, the Company has provided additional disclosures in Note 15.
	(b)	Recent Accounting Standards or Updates Not Yet Effective
	In March 2013, the FASB issued an accounting standard update requiring an entity to release into net income the entire amount of a cumulative translation adjustment related to its investment in a foreign entity when as a parent it either sells a part or all of its investment in the foreign entity or no longer holds a controlling financial interest in a subsidiary or group of assets within the foreign entity. This accounting standard update will be effective for the Company beginning in the first quarter of fiscal 2015. The Company is currently evaluating the impact of this accounting standard update on its Consolidated Financial Statements.
	In July 2013, the FASB issued an accounting standard update that provides explicit guidance on the financial statement presentation of an unrecognized tax benefit when a net operating loss carryforward or a tax credit carryforward exists. Under the new standard update, unrecognized tax benefit, or a portion of an unrecognized tax benefit, is to be presented in the financial statements as a reduction to a deferred tax asset for a net operating loss carryforward or a tax credit carryforward. This accounting standard update will be effective for the Company beginning in the first quarter fiscal 2015 and applied prospectively with early adoption permitted. The Company is currently evaluating the impact of this accounting standard update on its Consolidated Financial Statements.

Business_Combinations

Business Combinations	3 Months Ended
	Oct. 26, 2013
Business Combinations [Abstract]	'
Business Combinations	'
	3	Business Combinations
	(a)	Acquisition Summary
	The Company completed two business combinations during the three months ended October 26, 2013. A summary of the allocation of the total purchase consideration is presented as follows (in millions):
		Purchase Consideration		Net Tangible Assets Acquired (Liabilities Assumed)			Purchased Intangible Assets		Goodwill
	Sourcefire, Inc.	$	2,449	$	81		$	577	$	1,791
	Composite Software, Inc.	160		(10		)	75		95
	Total	$	2,609	$	71		$	652	$	1,886
	On October 7, 2013, the Company completed its acquisition of Sourcefire, Inc. (“Sourcefire”), a leader in intelligent cybersecurity solutions. Sourcefire delivers innovative, highly automated security through continuous awareness, threat detection and protection across its portfolio, including next-generation intrusion prevention systems, next-generation firewalls, and advanced malware protection. With the Sourcefire acquisition, the Company aims to accelerate its security strategy of defending, discovering, and remediating advanced threats to provide continuous security solutions to the Company’s customers in more places across the network. Product revenue from the Sourcefire acquisition has been included in the Company's Security product category.
	On July 29, 2013, the Company completed its acquisition of privately held Composite Software, Inc. (“Composite Software”), a provider of data virtualization software and services. Composite Software provides technology that connects many types of data from across the network and makes it appear as if the data is in one place. With its acquisition of Composite Software, the Company intends to extend its next-generation services platform by connecting data and infrastructure. Revenue from the Composite Software acquisition has been included in the Company's Services category.
	The total purchase consideration related to the Company’s business combinations completed during the three months ended October 26, 2013 consisted of cash consideration and vested share-based awards assumed. The total cash and cash equivalents acquired from these business combinations was approximately $132 million. Total transaction costs related to the Company’s business combination activities were $6 million for each of the three months ended October 26, 2013 and October 27, 2012. These transaction costs were expensed as incurred in general and administrative (“G&A”) expenses in the Consolidated Statements of Operations.
	The Company’s purchase price allocation for business combinations completed during recent periods is preliminary and subject to revision as additional information about fair value of assets and liabilities becomes available. Additional information, which 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 business combinations completed during the three months ended October 26, 2013 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 business combination from the date of acquisition. Pro forma results of operations for the acquisitions completed during the three months ended October 26, 2013 have not been presented because the effects of the acquisitions, individually and in the aggregate, were not material to the Company’s financial results.
	(b)	Acquisition of WhipTail Technologies, Inc.
	On October 28, 2013 the Company completed its acquisition of privately held WhipTail Technologies, Inc. (“WhipTail”). The Company agreed to pay approximately $0.4 billion in cash and retention-based incentives to acquire WhipTail. WhipTail is a leader in high performance, scalable solid state memory systems that enable organizations to simplify data center and virtualized environments and process more data in less time. With its WhipTail acquisition, the Company aims to strengthen its Unified Computing System (UCS) strategy and enhance application performance by integrating scalable solid state memory into the UCS’s fabric computing architecture. Revenue from the WhipTail acquisition will be included in the Company's Data Center product category. The Company expects that most of the purchase price will be allocated to goodwill and purchased intangible assets.

Goodwill_And_Purchased_Intangi

Goodwill And Purchased Intangible Assets	3 Months Ended
	Oct. 26, 2013
Goodwill and Intangible Assets Disclosure [Abstract]	'
Goodwill And Purchased Intangible Assets	'
	4	Goodwill and Purchased Intangible Assets
	(a)	Goodwill
	The following table presents the goodwill allocated to the Company’s reportable segments as of and during the three months ended October 26, 2013 (in millions):
			Balance at			Acquisitions				Other				Balance at
			July 27, 2013											26-Oct-13
	Americas		$	13,800		$	1,012			$	—			$	14,812
	EMEA		5,037			575				(1		)		5,611
	APJC		3,082			299				—				3,381
	Total		$	21,919		$	1,886			$	(1	)		$	23,804
	(b)	Purchased Intangible Assets
	The following table presents details of the Company’s intangible assets acquired through business combinations completed during the three months ended October 26, 2013 (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
	Sourcefire, Inc.	7		$	400		5		$	129			3		$	26	$	22	$	577
	Composite Software, Inc.	6		60			3.9		14				0		—		1		75
	Total			$	460				$	143					$	26	$	23	$	652
	The following tables present details of the Company’s purchased intangible assets (in millions):
	October 26, 2013		Gross			Accumulated Amortization				Net
	Purchased intangible assets with finite lives:
	Technology		$	4,034		$	(1,529	)		$	2,505
	Customer relationships		1,698			(516		)		1,182
	Other		55			(11		)		44
	Total purchased intangible assets with finite lives		5,787			(2,056		)		3,731
	In-process research and development, with indefinite lives		104			—				104
	Total		$	5,891		$	(2,056	)		$	3,835
	27-Jul-13		Gross			Accumulated Amortization				Net
	Purchased intangible assets with finite lives:
	Technology		$	3,563		$	(1,366	)		$	2,197
	Customer relationships		1,566			(466		)		1,100
	Other		30			(10		)		20
	Total purchased intangible assets with finite lives		5,159			(1,842		)		3,317
	In-process research and development, with indefinite lives		86			—				86
	Total		$	5,245		$	(1,842	)		$	3,403
	Purchased intangible assets include intangible assets acquired through business combinations as well as through direct purchases or licenses.
	The following table presents the amortization of purchased intangible assets (in millions):
			Three Months Ended
			October 26,			October 27,
			2013			2012
	Amortization of purchased intangible assets:
	Cost of sales		$	174		$	143
	Operating expenses		65			122
	Total		$	239		$	265
	There were no impairment charges related to purchased intangible assets during the periods presented.
	The estimated future amortization expense of purchased intangible assets with finite lives as of October 26, 2013 is as follows (in millions):
	Fiscal Year		Amount
	2014 (remaining nine months)		$	764
	2015		934
	2016		704
	2017		530
	2018		380
	Thereafter		419
	Total		$	3,731

Restructuring_And_Other_Charge

Restructuring And Other Charges	3 Months Ended
	Oct. 26, 2013
Restructuring and Related Activities [Abstract]	'
Restructuring and Other Charges	'
	5	Restructuring and Other Charges
	August Fiscal 2014 Plan
	In August 2013 the Company announced a workforce reduction plan. The Company is rebalancing its resources with a workforce reduction plan that will impact approximately 4,000 employees, or 5%, of the Company’s global workforce. This workforce reduction plan is designed to enable the Company to rebalance its workforce in order to reinvest in key growth areas such as the cloud, data center, mobility, services, software and security and to drive operational efficiencies. As the Company intends to reinvest in the above areas, it does not expect significant overall cost savings as a result of this rebalancing of its resources.
	In connection with this restructuring action, the Company incurred cumulative charges of $237 million for the first quarter of fiscal 2014. The Company expects total pre-tax charges pursuant to these restructuring actions of approximately $550 million and it expects the remaining charges to be incurred though the end of fiscal 2014.
	The following table summarizes the activities related to the restructuring and other charges pursuant to the August Fiscal 2014 Plan (in millions):
	August Fiscal 2014 Plan		Employee			Other			Total
			Severance
	Gross charges in fiscal 2014		$	240		$	(3	)	$	237
	Cash payments		(70		)	—			(70		)
	Non-cash items		—			3			3
	Liability as of October 26, 2013		$	170		$	—		$	170
	Fiscal 2011 Plans
	The Fiscal 2011 Plans consist primarily of the realignment and restructuring of the Company’s business announced in July 2011 and of certain consumer product lines as announced during April 2011. The Company has completed the Fiscal 2011 Plans and does not expect any remaining charges related to these actions. The Company incurred cumulative charges of approximately $1.1 billion in connection with these plans. There were no charges incurred during the three months ended October 26, 2013 in connection with these plans. For the three months ended October 27, 2012, such charges were $59 million. The remaining liability balance as of October 26, 2013 was $22 million inclusive of severance and non-severance activities.

Balance_Sheet_Details

Balance Sheet Details	3 Months Ended
	Oct. 26, 2013
Disclosure Balance Sheet Details [Abstract]	'
Balance Sheet Details	'
	6	Balance Sheet Details
	The following tables provide details of selected balance sheet items (in millions):
			October 26,			July 27,
			2013			2013
	Inventories:
	Raw materials		$	80		$	105
	Work in process		7			24
	Finished goods:
	Distributor inventory and deferred cost of sales		619			572
	Manufactured finished goods		464			480
	Total finished goods		1,083			1,052
	Service-related spares		257			256
	Demonstration systems		39			39
	Total		$	1,466		$	1,476
	Property and equipment, net:
	Land, buildings, and building and leasehold improvements		$	4,340		$	4,426
	Computer equipment and related software		1,428			1,416
	Production, engineering, and other equipment		5,767			5,721
	Operating lease assets (1)		326			326
	Furniture and fixtures		498			497
			12,359			12,386
	Less accumulated depreciation and amortization (1)		(9,086		)	(9,064		)
	Total		$	3,273		$	3,322
	(1)      Accumulated depreciation related to operating lease assets was $207 and $203 as of October 26, 2013 and July 27, 2013, respectively.
	Other assets:
	Deferred tax assets		$	1,496		$	1,539
	Investments in privately held companies		884			833
	Other		760			743
	Total		$	3,140		$	3,115
	Deferred revenue:
	Service		$	8,896		$	9,403
	Product:
	Unrecognized revenue on product shipments and other deferred revenue		3,628			3,340
	Cash receipts related to unrecognized revenue from two-tier distributors		683			680
	Total product deferred revenue		4,311			4,020
	Total		$	13,207		$	13,423
	Reported as:
	Current		$	9,212		$	9,262
	Noncurrent		3,995			4,161
	Total		$	13,207		$	13,423

Financing_Receivables_And_Guar

Financing Receivables And Guarantees	3 Months Ended
	Oct. 26, 2013
Financing Receivables And Guarantees [Abstract]	'
Financing Receivables And Guarantees	'
	7	Financing Receivables and Guarantees
	(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, as well as 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):
	October 26, 2013	Lease Receivables			Loan Receivables			Financed Service Contracts and Other			Total Financing Receivables
	Gross	$	3,813		$	1,808		$	3,018		$	8,639
	Unearned income	(264		)	—			—			(264		)
	Allowance for credit loss	(237		)	(93		)	(20		)	(350		)
	Total, net	$	3,312		$	1,715		$	2,998		$	8,025
	Reported as:
	Current	$	1,463		$	951		$	1,718		$	4,132
	Noncurrent	1,849			764			1,280			3,893
	Total, net	$	3,312		$	1,715		$	2,998		$	8,025
	27-Jul-13	Lease Receivables			Loan Receivables			Financed Service Contracts and Other			Total Financing Receivables
	Gross	$	3,780		$	1,649		$	3,136		$	8,565
	Unearned income	(273		)	—			—			(273		)
	Allowance for credit loss	(238		)	(86		)	(20		)	(344		)
	Total, net	$	3,269		$	1,563		$	3,116		$	7,948
	Reported as:
	Current	$	1,418		$	898		$	1,721		$	4,037
	Noncurrent	1,851			665			1,395			3,911
	Total, net	$	3,269		$	1,563		$	3,116		$	7,948
	As of October 26, 2013 and July 27, 2013, the deferred service revenue related to the financed service contracts and other was $1,881 million and $2,036 million, respectively.
	Contractual maturities of the gross lease receivables at October 26, 2013 are summarized as follows (in millions):
	Fiscal Year		Amount
	2014 (remaining nine months)		$	1,338
	2015		1,251
	2016		746
	2017		364
	2018		109
	Thereafter		5
	Total		$	3,813
	Actual cash collections may differ from the contractual maturities due to early customer buyouts, refinancings, or defaults.
	(b)	Credit Quality of Financing Receivables
	Financing receivables categorized by the Company’s internal credit risk rating as of October 26, 2013 and July 27, 2013 are summarized as follows (in millions):
		INTERNAL CREDIT RISK RATING
	October 26, 2013	1 to 4			5 to 6			7 and Higher			Total			Residual Value		Gross Receivables,
																Net of Unearned Income
	Lease receivables	$	1,695		$	1,498		$	104		$	3,297		$	252	$	3,549
	Loan receivables	981			777			50			1,808			—		1,808
	Financed service contracts and other	1,792			1,110			116			3,018			—		3,018
	Total	$	4,468		$	3,385		$	270		$	8,123		$	252	$	8,375
		INTERNAL CREDIT RISK RATING
	27-Jul-13	1 to 4			5 to 6			7 and Higher			Total			Residual Value		Gross Receivables,
																Net of Unearned Income
	Lease receivables	$	1,681		$	1,482		$	93		$	3,256		$	251	$	3,507
	Loan receivables	842			777			30			1,649			—		1,649
	Financed service contracts and other	1,876			1,141			119			3,136			—		3,136
	Total	$	4,399		$	3,400		$	242		$	8,041		$	251	$	8,292
	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 October 26, 2013 and July 27, 2013 were $2,289 million and $2,453 million, respectively, and they were associated with financing receivables (net of unearned income) of $8,375 million and $8,292 million as of their respective period ends. The Company did not modify any financing receivables during the periods presented.
	The following tables present the aging analysis of financing receivables as of October 26, 2013 and July 27, 2013 (in millions):
		DAYS PAST DUE (INCLUDES BILLED AND UNBILLED)
	26-Oct-13	31-60			61-90			91+			Total Past Due			Current		Gross Receivables,		Nonaccrual Financing Receivables		Impaired Financing Receivables
																Net of Unearned Income
	Lease receivables	$	135		$	60		$	148		$	343		$	3,206	$	3,549	$	28	$	24
	Loan receivables	28			2			16			46			1,762		1,808		7		17
	Financed service contracts and other	85			41			277			403			2,615		3,018		12		11
	Total	$	248		$	103		$	441		$	792		$	7,583	$	8,375	$	47	$	52
		DAYS PAST DUE (INCLUDES BILLED AND UNBILLED)
	27-Jul-13	31-60			61-90			91+			Total Past Due			Current		Gross Receivables,		Nonaccrual Financing Receivables		Impaired Financing Receivables
																Net of Unearned Income
Lease receivables	$	85		$	48		$	124		$	257		$	3,250	$	3,507	$	27	$	22
Loan receivables	6			3			11			20			1,629		1,649		11		9
Financed service contracts and other	75			48			392			515			2,621		3,136		18		11
Total	$	166		$	99		$	527		$	792		$	7,500	$	8,292	$	56	$	42
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 are 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 preceding aging tables exclude pending adjustments on billed tax assessment in certain international markets. The balances of either unbilled or current financing receivables included in the category of 91 days plus past due for financing receivables were $320 million and $406 million as of October 26, 2013 and July 27, 2013, respectively.
As of October 26, 2013, the Company had financing receivables of $92 million, net of unbilled or current receivables from the same contract, that were in the category for 91 days plus past due but remained on accrual status. Such balance was $87 million as of July 27, 2013. A financing receivable may be placed on nonaccrual status earlier if, in management’s opinion, a timely collection of the full principal and interest becomes uncertain.
(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 October 26, 2013	Lease Receivables			Loan Receivables			Financed Service Contracts and Other			Total
Allowance for credit loss as of July 27, 2013	$	238		$	86		$	20		$	344
Provisions	(3		)	6			—			3
Foreign exchange and other	2			1			—			3
Allowance for credit loss as of October 26, 2013	$	237		$	93		$	20		$	350
Gross receivables as of October 26, 2013, net of unearned income	$	3,549		$	1,808		$	3,018		$	8,375
	CREDIT LOSS ALLOWANCES
Three Months Ended October 27, 2012	Lease Receivables			Loan Receivables			Financed Service Contracts and Other			Total
Allowance for credit loss as of July 28, 2012	$	247		$	122		$	11		$	380
Provisions	(2		)	(10		)	1			(11		)
Foreign exchange and other	3			2			—			5
Allowance for credit loss as of October 27, 2012	$	248		$	114		$	12		$	374
Gross receivables as of October 27, 2012, net of unearned income	$	3,340		$	1,816		$	2,639		$	7,795
The Company assesses the allowance for credit loss related to financing receivables on either an individual or a collective basis. The Company considers various factors in evaluating lease and loan receivables and the earned portion of financed service contracts for possible impairment on an individual basis. These factors include the Company’s historical experience, credit quality and age of the receivable balances, and economic conditions that may affect a customer’s ability to pay. When the evaluation indicates that it is probable that all amounts due pursuant to the contractual terms of the financing agreement, including scheduled interest payments, are unable to be collected, the financing receivable is considered impaired. All such outstanding amounts, including any accrued interest, will be assessed and fully reserved at the customer level. The Company’s internal credit risk ratings are categorized as 1 through 10, with the lowest credit risk rating representing the highest quality financing receivables.
Typically, the Company also considers receivables with a risk rating of 8 or higher to be impaired and will include them in the individual assessment for allowance. These balances, as of October 26, 2013 and July 27, 2013, 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)	Financing 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 $5.6 billion for the three months ended October 26, 2013 and October 27, 2012, respectively. The balance of the channel partner financing subject to guarantees was $1.4 billion as of each October 26, 2013 and July 27, 2013.
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 $25 million and $44 million for the three months ended October 26, 2013 and October 27, 2012, respectively.
Financing Guarantee Summary  The aggregate amounts of financing guarantees outstanding at October 26, 2013 and July 27, 2013, representing the total maximum potential future payments under financing arrangements with third parties along with the related deferred revenue, are summarized in the following table (in millions):
	October 26,			July 27,
	2013			2013
Maximum potential future payments relating to financing guarantees:
Channel partner	$	483		$	438
End user	223			237
Total	$	706		$	675
Deferred revenue associated with financing guarantees:
Channel partner	$	(232	)	$	(225	)
End user	(189		)	(191		)
Total	$	(421	)	$	(416	)
Maximum potential future payments relating to financing guarantees, net of associated deferred revenue	$	285		$	259

Investments

Investments	3 Months Ended
	Oct. 26, 2013
Investments [Abstract]	'
Investments	'
	8	Investments
	(a)	Summary of Available-for-Sale Investments
	The following tables summarize the Company’s available-for-sale investments (in millions):
	October 26, 2013	Amortized Cost				Gross Unrealized Gains				Gross Unrealized Losses			Fair Value
	Fixed income securities:
	U.S. government securities	$	28,603			$	37			$	(2	)	$	28,638
	U.S. government agency securities	2,394				5				—			2,399
	Non-U.S. government and agency securities	907				3				(1		)	909
	Corporate debt securities	7,974				73				(21		)	8,026
	U.S. agency mortgage-backed securities	456				5				—			461
	Total fixed income securities	40,334				123				(24		)	40,433
	Publicly traded equity securities	1,820				696				(2		)	2,514
	Total	$	42,154			$	819			$	(26	)	$	42,947
	July 27, 2013	Amortized Cost				Gross Unrealized Gains				Gross Unrealized Losses			Fair Value
	Fixed income securities:
	U.S. government securities	$	27,814			$	22			$	(13	)	$	27,823
	U.S. government agency securities	3,083				7				(1		)	3,089
	Non-U.S. government and agency securities	1,094				3				(2		)	1,095
	Corporate debt securities	7,876				55				(50		)	7,881
	Total fixed income securities	39,867				87				(66		)	39,888
	Publicly traded equity securities	2,063				738				(4		)	2,797
	Total	$	41,930			$	825			$	(70	)	$	42,685
	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
			October 26,				October 27,
			2013				2012
	Gross realized gains		$	95			$	63
	Gross realized losses		(12		)		(36		)
	Total		$	83			$	27
	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
			October 26,				October 27,
			2013				2012
	Net gains (losses) on investments in publicly traded equity securities		$	75			$	10
	Net gains on investments in fixed income securities		8				17
	Total		$	83			$	27
	There were no impairment charges on available-for-sale investments for the periods presented.
	The following tables present the breakdown of the available-for-sale investments with gross unrealized losses and the duration that those losses had been unrealized at October 26, 2013 and July 27, 2013 (in millions):
		UNREALIZED LOSSES LESS THAN 12 MONTHS								UNREALIZED LOSSES 12 MONTHS OR GREATER					TOTAL
	October 26, 2013	Fair Value				Gross Unrealized Losses				Fair Value			Gross Unrealized Losses		Fair Value		Gross Unrealized Losses
	Fixed income securities:
	U.S. government securities	$	3,303			$	(2	)		$	8		$	—	$	3,311	$	(2	)
	U.S. government agency securities	201				—				—			—		201		—
	Non-U.S. government and agency securities	208				(1		)		2			—		210		(1		)
	Corporate debt securities	2,357				(21		)		13			—		2,370		(21		)
	U.S. agency mortgage-backed securities	32				—				—			—		32		—
	Total fixed income securities	6,101				(24		)		23			—		6,124		(24		)
	Publicly traded equity securities	45				(2		)		—			—		45		(2		)
	Total	$	6,146			$	(26	)		$	23		$	—	$	6,169	$	(26	)
		UNREALIZED LOSSES LESS THAN 12 MONTHS								UNREALIZED LOSSES 12 MONTHS OR GREATER					TOTAL
	27-Jul-13	Fair Value				Gross Unrealized Losses				Fair Value			Gross Unrealized Losses		Fair Value		Gross Unrealized Losses
	Fixed income securities:
	U.S. government securities	$	7,865			$	(13	)		$	—		$	—	$	7,865	$	(13	)
	U.S. government agency securities	294				(1		)		—			—		294		(1		)
	Non-U.S. government and agency securities	432				(2		)		—			—		432		(2		)
	Corporate debt securities	3,704				(50		)		4			—		3,708		(50		)
	Total fixed income securities	12,295				(66		)		4			—		12,299		(66		)
	Publicly traded equity securities	278				(4		)		—			—		278		(4		)
	Total	$	12,573			$	(70	)		$	4		$	—	$	12,577	$	(70	)
	As of October 26, 2013, for fixed income securities that were in unrealized loss positions, the Company has determined that (i) it does not have the intent to sell any of these investments, and (ii) it is not more likely than not that it will be required to sell any of these investments before recovery of the entire amortized cost basis. In addition, as of October 26, 2013, the Company anticipates that it will recover the entire amortized cost basis of such fixed income securities and has determined that no other-than-temporary impairments associated with credit losses were required to be recognized during the three months ended October 26, 2013.
	The Company has evaluated its publicly traded equity securities as of October 26, 2013 and has determined that there was no indication of 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 at October 26, 2013 (in millions):
	Amortized Cost				Fair Value
Less than 1 year	$	15,286			$	15,297
Due in 1 to 2 years	12,310				12,346
Due in 2 to 5 years	12,160				12,204
Due after 5 years	578				586
Total	$	40,334			$	40,433
Actual maturities may differ from the contractual maturities because borrowers may have the right to call or prepay certain obligations.
(d)	Securities Lending
The Company periodically engages in securities lending activities with certain of its available-for-sale investments. These transactions are accounted for as a secured lending of the securities, and the securities are typically loaned only on an overnight basis. The average daily balance of securities lending for the three months ended October 26, 2013 and October 27, 2012 was $0.6 billion and $0.8 billion, respectively. The Company requires collateral equal to at least 102% of the fair market value of the loaned security and that the collateral be in the form of cash or liquid, high-quality assets. The Company engages in these secured lending transactions only with highly creditworthy counterparties, and the associated portfolio custodian has agreed to indemnify the Company against collateral losses. The Company did not experience any losses in connection with the secured lending of securities during the periods presented. As of October 26, 2013 and July 27, 2013, the Company had no outstanding securities lending transactions.

Fair_Value

Fair Value	3 Months Ended
	Oct. 26, 2013
Fair Value Disclosures [Abstract]	'
Fair Value	'
	9	Fair Value
	Fair value is defined as the price that would be received from selling an asset or paid to transfer a liability in an orderly transaction between market participants at the measurement date. When determining the fair value measurements for assets and liabilities required or permitted to be either recorded or disclosed at fair value, the Company considers the principal or most advantageous market in which it would transact, and it also considers assumptions that market participants would use when pricing the asset or liability.
	(a)	Fair Value Hierarchy
	The accounting guidance for fair value measurement requires an entity to maximize the use of observable inputs and minimize the use of unobservable inputs when measuring fair value. The standard establishes a fair value hierarchy based on the level of independent, objective evidence surrounding the inputs used to measure fair value. A financial instrument’s categorization within the fair value hierarchy is based upon the lowest level of input that is significant to the fair value measurement. The fair value hierarchy is as follows:
	Level 1 applies to assets or liabilities for which there are quoted prices in active markets for identical assets or liabilities.
	Level 2 applies to assets or liabilities for which there are inputs other than quoted prices, that are observable for the asset or liability such as quoted prices for similar assets or liabilities in active markets; quoted prices for identical assets or liabilities in markets with insufficient volume or infrequent transactions (less active markets); or model-derived valuations in which significant inputs are observable or can be derived principally from, or corroborated by, observable market data.
	Level 3 applies to assets or liabilities for which there are unobservable inputs to the valuation methodology that are significant to the measurement of the fair value of the assets or liabilities.
	(b)	Assets and Liabilities Measured at Fair Value on a Recurring Basis
	Assets and liabilities measured at fair value on a recurring basis as of October 26, 2013 and July 27, 2013 were as follows (in millions):
		26-Oct-13										27-Jul-13
		FAIR VALUE MEASUREMENTS										FAIR VALUE MEASUREMENTS
		Level 1			Level 2				Total Balance			Level 1				Level 2		Total Balance
	Assets
	Cash equivalents:
	Money market funds	$	3,145		$	—			$	3,145		$	6,045			$	—	$	6,045
	Available-for-sale investments:
	U.S. government securities	—			28,638				28,638			—				27,823		27,823
	U.S. government agency securities	—			2,399				2,399			—				3,089		3,089
	Non-U.S. government and agency securities	—			909				909			—				1,095		1,095
	Corporate debt securities	—			8,026				8,026			—				7,881		7,881
	U.S. agency mortgage-backed securities	—			461				461			—				—		—
	Publicly traded equity securities	2,514			—				2,514			2,797				—		2,797
	Derivative assets	—			224				224			—				182		182
	Total	$	5,659		$	40,657			$	46,316		$	8,842			$	40,070	$	48,912
	Liabilities:
	Derivative liabilities	$	—		$	145			$	145		$	—			$	171	$	171
	Total	$	—		$	145			$	145		$	—			$	171	$	171
	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.
	(c)	Assets Measured at Fair Value on a Nonrecurring Basis
	The following table presents the Company’s financial instruments and nonfinancial 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 (in millions):
			26-Oct-13							27-Oct-12
			Net Carrying Value as of End of Period			Total Losses for the Period Ended				Net Carrying Value as of End of Period			Total Losses for the Period Ended
	Investments in privately held companies		$	—		$	(1	)		$	42		$	(10	)
	The assets in the preceding table 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.
	(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 $238 million and $242 million as of October 26, 2013 and July 27, 2013, 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 October 26, 2013 and July 27, 2013 was $2.0 billion and $2.1 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 loan receivables and financed service contracts, and therefore they are categorized as Level 3.
	As of October 26, 2013, the fair value of the Company’s senior notes and other long-term debt was $17.6 billion with a carrying amount of $16.2 billion. This compares to a fair value of $17.6 billion and a carrying amount of $16.2 billion as of July 27, 2013. The fair value of the senior notes and other long-term debt was determined based on observable market prices in a less active market and was categorized as Level 2 in the fair value hierarchy.

Borrowings

Borrowings	3 Months Ended
	Oct. 26, 2013
Debt Disclosure [Abstract]	'
Borrowings	'
	10	Borrowings
	(a)	Short-Term Debt
	The following table summarizes the Company’s short-term debt (in millions, except percentages):
		October 26, 2013						July 27, 2013
		Amount			Weighted-Average Interest Rate			Amount			Weighted-Average Interest Rate
	Current portion of long-term debt	$	3,269		0.61	%		$	3,273		0.63	%
	Other notes and borrowings	10			2.52	%		10			2.52	%
	Total short-term debt	$	3,279					$	3,283
	In fiscal 2011, the Company 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 no commercial paper notes outstanding as of each of October 26, 2013 and July 27, 2013.
	Other notes and borrowings consist of the short-term portion of secured borrowings associated with customer financing arrangements as well as notes and credit facilities with a number of financial institutions that are available to certain of the Company’s foreign subsidiaries. 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.
	As of October 26, 2013, the estimated fair value of the short-term debt approximates its carrying value due to the short maturities.
	(b)	Long-Term Debt
	The following table summarizes the Company’s long-term debt (in millions, except percentages):
		October 26, 2013					July 27, 2013
		Amount			Effective Rate		Amount			Effective Rate
	Senior Notes:
	Floating-rate notes, due 2014	$	1,250		0.61%		$	1,250		0.62%
	1.625% fixed-rate notes, due 2014	2,000			0.62%		2,000			0.64%
	2.90% fixed-rate notes, due 2014	500			3.11%		500			3.11%
	5.50% fixed-rate notes, due 2016	3,000			3.06%		3,000			3.07%
	3.15% fixed-rate notes, due 2017	750			0.82%		750			0.84%
	4.95% fixed-rate notes, due 2019	2,000			4.69%		2,000			4.70%
	4.45% fixed-rate notes, due 2020	2,500			3.73%		2,500			4.15%
	5.90% fixed-rate notes, due 2039	2,000			6.11%		2,000			6.11%
	5.50% fixed-rate notes, due 2040	2,000			5.67%		2,000			5.67%
	Other long-term debt	23			1.32%		21			1.46%
	Total	16,023					16,021
	Unaccreted discount	(63		)			(65		)
	Hedge accounting fair value adjustments	256					245
	Total	$	16,216				$	16,201
	Reported as:
	Current portion of long-term debt	$	3,269				$	3,273
	Long-term debt	12,947					12,928
	Total	$	16,216				$	16,201
	To achieve its interest rate risk management objectives, the Company has entered into interest rate swaps with an aggregate notional amount of $5.75 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 October 26, 2013, the Company was in compliance with all debt covenants.
	As of October 26, 2013, future principal payments for long-term debt, including the current portion, are summarized as follows (in millions):
	Fiscal Year	Amount
	2014 (remaining nine months)	$	3,264
	2015	505
	2016	3,003
	2017	751
	2018	—
	Thereafter	8,500
	Total	$	16,023
	(c)	Credit Facility
	On February 17, 2012, 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 February 17, 2017. Any advances under the credit agreement will accrue interest at rates that are equal to, based on certain conditions, either (i) the higher of the Federal Funds rate plus 0.50%, Bank of America’s “prime rate” as announced from time to time, or one-month LIBOR plus 1.00%, or (ii) LIBOR 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. The credit agreement requires the Company to comply with certain covenants, including that it maintain an interest coverage ratio as defined in the agreement. As of October 26, 2013, 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.
	The Company may also, upon the agreement of either the 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 by up to two additional years, or up to February 17, 2019.

Derivative_Instruments

Derivative Instruments	3 Months Ended
	Oct. 26, 2013
Derivative Instruments and Hedging Activities Disclosure [Abstract]	'
Derivative Instruments	'
	11	Derivative Instruments
	(a)	Summary of Derivative Instruments
	The Company uses derivative instruments primarily to manage exposures to foreign currency exchange rate, interest rate, and equity price risks. The Company’s primary objective in holding derivatives is to reduce the volatility of earnings and cash flows associated with changes in foreign currency exchange rates, interest rates, and equity prices. The Company’s derivatives expose it to credit risk to the extent that the counterparties may be unable to meet the terms of the agreement. The Company does, however, seek to mitigate such risks by limiting its counterparties to major financial institutions. In addition, the potential risk of loss with any one counterparty resulting from this type of credit risk is monitored. Management does not expect material losses as a result of defaults by counterparties.
	The fair values of the Company’s derivative instruments and the line items on the Consolidated Balance Sheets to which they were recorded are summarized as follows (in millions):
		DERIVATIVE ASSETS										DERIVATIVE LIABILITIES
		Balance Sheet Line Item		October 26,				July 27,				Balance Sheet Line Item		October 26,			July 27,
				2013				2013						2013			2013
	Derivatives designated as hedging instruments:
	Foreign currency derivatives	Other current assets		$	57			$	33			Other current liabilities		$	10		$	7
	Interest rate derivatives	Other assets		164				147				Other long-term liabilities		—			2
	Equity derivatives	Other current assets		—				—				Other current liabilities		122			155
	Total			221				180						132			164
	Derivatives not designated as hedging instruments:
	Foreign currency derivatives	Other current assets		3				2				Other current liabilities		13			7
	Total			$	224			$	182					$	145		$	171
	The effects of the Company’s cash flow and net investment hedging instruments on OCI and the Consolidated Statements of Operations are summarized as follows (in millions):
	GAINS (LOSSES) RECOGNIZED										GAINS (LOSSES) RECLASSIFIED FROM
	IN OCI ON DERIVATIVES FOR THE										AOCI INTO INCOME FOR THE
	THREE MONTHS ENDED (EFFECTIVE PORTION)										THREE MONTHS ENDED (EFFECTIVE PORTION)
	Derivatives designated as cash flow hedging instruments:		October 26,				October 27,				Line Item in Statements of Operations		October 26,			October 27,
			2013				2012						2013			2012
	Foreign currency derivatives		$	38			$	66			Operating expenses		$	7		$	(4	)
											Cost of sales - service		2			(1		)
	Total		$	38			$	66					$	9		$	(5	)
	Derivatives designated as net investment hedging instruments:
	Foreign currency derivatives		$	(19	)		$	(24	)		Other income (loss), net		$	—		$	—
	As of October 26, 2013, the Company estimates that approximately $49 million of net derivative gains related to its cash flow hedges included in AOCI will be reclassified into earnings within the next 12 months.
	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 DERIVATIVES								GAINS (LOSSES) RELATED TO HEDGED
					INSTRUMENTS FOR THE THREE MONTHS ENDED								ITEMS FOR THE THREE MONTHS ENDED
	Derivatives Designated as Fair Value Hedging Instruments		Line Item in Statements of Operations		October 26,				October 27,				October 26,			October 27,
					2013				2012				2013			2012
	Equity derivatives		Other income (loss), net		$	(35	)		$	(3	)		$	35		$	3
	Interest rate derivatives		Interest expense		18				(18		)		(20		)	18
	Total				$	(17	)		$	(21	)		$	15		$	21
	The effect on the Consolidated Statements of Operations of derivative instruments not designated as hedges is summarized as follows (in millions):
					GAINS (LOSSES) FOR THE THREE MONTHS ENDED
	Derivatives Not Designated as Hedging Instruments		Line Item in Statements of Operations		October 26,				October 27,
					2013				2012
	Foreign currency derivatives		Other income (loss), net		$	43			$	53
	Total return swaps - deferred compensation		Operating expenses		17				14
	Equity derivatives		Other income (loss), net		11				9
	Total				$	71			$	76
	The notional amounts of the Company’s outstanding derivatives are summarized as follows (in millions):
		October 26,				July 27,
		2013				2013
	Derivatives designated as hedging instruments:
	Foreign currency derivatives - cash flow hedges	$	1,772			$	1,885
	Interest rate derivatives	5,750				5,250
	Net investment hedging instruments	577				662
	Equity derivatives	779				1,098
	Derivatives not designated as hedging instruments:
	Foreign currency derivatives	3,526				3,739
	Total return swaps-deferred compensation	396				358
	Total	$	12,800			$	12,992
	(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. As of October 26, 2013 and July 27, 2013, information related to these offsetting arrangements was as follows (in millions):
		October 26, 2013
		DERIVATIVES OFFSET IN BALANCE SHEET												DERIVATIVES ELIGIBLE FOR OFFSETTING
		Gross Derivative Amounts				Gross Derivative Amounts Offset in Balance Sheet				Net Amount				Gross Derivative Amounts			Gross Derivative Amounts Eligible for Offsetting			Net Amount
	Fair value of assets	$	224			$	—			$	224			$	224		$	(99	)	$	125
	Fair value of liabilities	$	145			$	—			$	145			$	145		$	(99	)	$	46
		27-Jul-13
	DERIVATIVES OFFSET IN BALANCE SHEET												DERIVATIVES ELIGIBLE FOR OFFSETTING
	Gross Derivative Amounts				Gross Derivative Amounts Offset in Balance Sheet				Net Amount				Gross Derivative Amounts			Gross Derivative Amounts Eligible for Offsetting			Net Amount
Fair value of assets	$	182			$	—			$	182			$	182		$	(120	)	$	62
Fair value of liabilities	$	171			$	—			$	171			$	171		$	(120	)	$	51
(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 trading 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 option and forward contracts, designated as cash flow hedges, generally have maturities of less than 18 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. These derivative instruments generally have maturities of up to six months.
(d)	Interest Rate Risk
Interest Rate Derivatives, Investments   The Company’s primary objective for holding fixed income securities is to achieve an appropriate investment return consistent with preserving principal and managing risk. To realize these objectives, the Company may utilize interest rate swaps or other derivatives designated as fair value or cash flow hedges. As of October 26, 2013 and July 27, 2013, the Company did not have any outstanding interest rate derivatives related to its fixed income securities.
Interest Rate Derivatives Designated as Fair Value Hedge, Long-Term Debt   In fiscal 2014 and 2013, the Company entered into interest rate swaps designated as fair value hedges related to fixed-rate senior notes that were issued in February 2009 and November 2009 and are due in 2019 and 2020, respectively. In the previous periods, the Company entered into interest rate swaps designated as fair value hedges related to fixed-rate senior notes that were issued in 2006 and 2011 and are due in 2014, 2016, and 2017. 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 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 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 manages the risk of its investment portfolio by entering 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 fiscal 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 fiscal periods presented.
(g)	Credit-Risk-Related Contingent Features
Certain derivative instruments are executed under agreements that have provisions requiring the Company and the counterparty to maintain a specified credit rating from certain credit-rating agencies. If the Company’s or the counterparty’s credit-rating falls below a specified credit rating, either party has the right to request collateral on the derivatives’ net liability position. Such provisions did not affect the Company’s financial position as of October 26, 2013 and July 27, 2013.

Commitments_And_Contingencies

Commitments And Contingencies	3 Months Ended
	Oct. 26, 2013
Commitments and Contingencies Disclosure [Abstract]	'
Commitments and Contingencies	'
	12	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 Australia, Belgium, China, France, Germany, India, Israel, Italy, Japan, and the United Kingdom. The Company also leases equipment and vehicles. Future minimum lease payments under all noncancelable operating leases with an initial term in excess of one year as of October 26, 2013 are as follows (in millions):
	Fiscal Year	Amount
	2014 (remaining nine months)	$	293
	2015	314
	2016	169
	2017	103
	2018	75
	Thereafter	198
	Total	$	1,152
	(b)	Purchase Commitments with Contract Manufacturers and Suppliers
	The Company purchases components from a variety of suppliers and uses several contract manufacturers to provide manufacturing services for its products. During the normal course of business, in order to manage manufacturing lead times and help ensure adequate component supply, the Company enters into agreements with contract manufacturers and suppliers that either allow them to procure inventory based upon criteria as defined by the Company or establish the parameters defining the Company’s requirements. A significant portion of the Company’s reported purchase commitments arising from these agreements consists of firm, noncancelable, and unconditional commitments. In certain instances, these agreements allow the Company the option to cancel, reschedule, and adjust the Company’s requirements based on its business needs prior to firm orders being placed. As of October 26, 2013 and July 27, 2013, the Company had total purchase commitments for inventory of $4,020 million and $4,033 million, respectively.
	The Company records a liability for firm, noncancelable, and unconditional purchase commitments for quantities in excess of its future demand forecasts consistent with the valuation of the Company’s excess and obsolete inventory. As of October 26, 2013 and July 27, 2013, the liability for these purchase commitments was $169 million and $172 million, respectively, and was included in other current liabilities.
	(c)	Other Commitments
	In connection with the Company’s business combinations and asset purchases, the Company has agreed to pay certain additional amounts contingent upon the achievement of certain agreed-upon technology, development, product, or other milestones or the continued employment with the Company of certain employees of the acquired entities. The Company recognized such compensation expense of $304 million and $12 million during the three months ended October 26, 2013 and October 27, 2012, respectively. As of October 26, 2013, the Company estimated that future compensation expense and contingent consideration of up to $853 million may be required to be recognized pursuant to the applicable business combination and asset purchase agreements, which included the remaining potential compensation expense related to Insieme Networks, Inc. as more fully discussed in the subsection entitled “Insieme Networks, Inc.” within section (d) immediately below.
	The Company also has certain funding commitments, primarily related to its investments in privately held companies and venture funds, some of which are based on the achievement of certain agreed-upon milestones, and some of which are required to be funded on demand. The funding commitments were $265 million and $263 million as of October 26, 2013 and July 27, 2013, respectively.
	(d)	Variable Interest Entities
	VCE Joint Venture VCE is a joint venture that the Company formed in fiscal 2010 with EMC Corporation (“EMC”), with investments from VMware, Inc. (“VMware”) and Intel Corporation. VCE helps organizations leverage best-in-class technologies and disciplines from Cisco, EMC, and VMware to enable the transformation to cloud computing.
	As of October 26, 2013, the Company’s cumulative gross investment in VCE was approximately $578 million, inclusive of accrued interest, and its ownership percentage was approximately 35%.  The Company invested $64 million in VCE during the three months ended October 26, 2013.
	The Company accounts for its investment in VCE under the equity method, and its portion of VCE’s net loss is recognized in other income (loss), net. The Company’s share of VCE’s losses, based upon its portion of the overall funding, was approximately 36.8% for each of the three months ended October 26, 2013 and October 27, 2012. As of October 26, 2013, the Company had recorded cumulative losses from VCE of $475 million since inception, of which losses of $53 million and $42 million were recorded for the three months ended October 26, 2013 and October 27, 2012, respectively. The Company’s carrying value in VCE as of October 26, 2013 of $103 million was recorded in other assets.
	Over the next 12 months, as VCE scales its operations, the Company expects that it will make additional investments in VCE and may incur additional losses proportionate with the Company’s share ownership.
	From time to time, EMC and Cisco may enter into guarantee agreements on behalf of VCE to indemnify third parties, such as customers, for monetary damages. Such guarantees were not material as of October 26, 2013.
	Insieme Networks, Inc. In the third quarter of fiscal 2012, the Company made an investment in Insieme Networks Inc. ("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 includes $100 million of funding and a license to certain of the Company’s technology. In addition, pursuant to a November 2012 amendment to the agreement between the Company and Insieme, the Company agreed to invest an additional $35 million in Insieme upon the satisfaction of certain conditions. As of October 26, 2013, 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 three months ended October 26, 2013, the Company exercised its call option and entered into a merger agreement to purchase the remaining interests in Insieme. The merger is expected to close in the second quarter of fiscal 2014, at which time the noncontrolling interest holders will be 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. During the three months ended October 26, 2013, the Company recorded a liability of $257 million for compensation expense related to the fair value of the vested portion of amounts that are expected to be earned by the noncontrolling interest holders. Continued vesting and changes to the fair value of the amounts probable of being earned will result in adjustments to the recorded compensation expense in future periods. The maximum amount that could be recorded as compensation expense by the Company is approximately $863 million, including the $257 million that has been expensed through October 26, 2013. The milestone payments, if earned, are expected to be paid primarily during fiscal 2016 and fiscal 2017.
	Other Variable Interest Entities In the ordinary course of business, the Company has investments in other privately held companies and provides financing to certain customers. These other privately held companies and customers may be considered to be variable interest entities. The Company evaluates on an ongoing basis its investments in these other privately held companies and its customer financings, and has determined that as of October 26, 2013 there were no other variable interest entities required to be consolidated in the Company’s Consolidated Financial Statements.
	(e)	Product Warranties and Guarantees
	The following table summarizes the activity related to product warranty liability during the three months ended October 26, 2013 and October 27, 2012 (in millions):
		Three Months Ended
		October 26,			October 27,
		2013			2012
	Balance at beginning of period	$	431		$	415
	Provision for warranties issued	240			162
	Payments	(179		)	(155		)
	Balance at end of period	$	492		$	422
	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.
	The Company also provides financing guarantees, which are generally for various third-party financing arrangements to channel partners and other end-user customers. For additional information see Note 7. The Company’s other guarantee arrangements as of October 26, 2013 and July 27, 2013 that were subject to recognition and disclosure requirements were not material.
	(f) 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 is an indemnifier pursuant to such agreements in a case involving certain of the Company's service provider customers that are subject to patent claims asserted by C-Cation Technologies, LLC (“C-Cation”) in the United States District Court for the Eastern District of Texas filed on January 25, 2011. C-Cation alleges that the service providers infringe C-Cation’s patent through use of Cable Modem Termination Systems and cable modems provided by the Company and other manufacturers. C-Cation is seeking monetary damages and injunctive relief. A consolidated trial is set to begin on December 9, 2013. The Company believes that the service providers have strong defenses and that the Company's products do not infringe the patent. Should the plaintiff prevail, the Company may have an obligation to indemnify its service provider customers for the accused Cisco products. Due to the uncertainty surrounding the litigation process, the Company is unable to reasonably estimate whether any loss has been incurred as a result of this indemnity claim at this time.
	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.
	(g) Legal Proceedings
	Brazilian authorities have investigated the Company’s Brazilian subsidiary and certain of its current and 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. In the first quarter of fiscal 2013, the Brazilian federal tax authorities asserted an additional claim against the Company’s Brazilian subsidiary based on a theory of joint liability with respect to an alleged underpayment of income taxes, social taxes, interest, and penalties by a Brazilian distributor.
	The asserted claims by Brazilian federal tax authorities are for calendar years 2003 through 2008, 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 approximately $394 million for the alleged evasion of import and other taxes, approximately $1.2 billion for interest, and approximately $1.8 billion for various penalties, all determined using an exchange rate as of October 26, 2013. 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.
	The Company was subject to patent claims asserted by VirnetX, Inc. on August 11, 2010 in the United States District Court for the Eastern District of Texas.  VirnetX alleged that various Cisco products that implement a method for secure communication using virtual private networks infringe certain patents.  VirnetX sought monetary damages.  The trial on these claims began on March 4, 2013. On March 14, 2013, the jury entered a verdict finding that the Company’s accused products do not infringe any of VirnetX’s patents asserted in the lawsuit. On April 3, 2013, VirnetX filed a motion seeking a new trial on the issue of infringement, which the Company has opposed. The Court held a hearing on VirnetX’s motion for a new trial in June 2013, but has not issued a ruling.
	The Company was subject to numerous patent, tort, and contract claims asserted by XpertUniverse on March 10, 2009 in the United States District Court for the District of Delaware. Shortly before trial, the Court dismissed on summary judgment all claims initially asserted by XpertUniverse except a claim for infringement of two XpertUniverse patents and a claim for fraud by concealment. XpertUniverse’s remaining patent claims alleged that three Cisco products in the field of expertise location software infringed two XpertUniverse patents. XpertUniverse’s fraud by concealment claim alleged that the Company did not disclose its decision not to admit XpertUniverse into a partner program. The trial on these remaining claims began on March 11, 2013. On March 22, 2013, the jury entered a verdict finding that two of the Company’s products infringed two of XpertUniverse’s patents and awarded XpertUniverse damages of less than $35 thousand. The jury also found for XpertUniverse on its fraud by concealment claim and awarded damages of $70 million. In May and June, 2013, the Company filed post-trial motions. On November 20, 2013 the trial court granted the Company's motion for judgment as a matter of law, overturned the jury’s finding on the fraud by concealment claim, and vacated the $70 million verdict. Separately, the trial court agreed with the jury that the Company infringed XpertUniverse’s patents, and affirmed the verdict awarding XpertUniverse approximately $35 thousand in damages plus accrued interest. The Company expects XpertUniverse to appeal the trial court’s decision.
	In addition, the Company is subject to legal proceedings, claims, and litigation arising in the ordinary course of business, including intellectual property litigation. While the outcome of these matters is currently not determinable, the Company does not expect that the ultimate costs to resolve these matters will have a material adverse effect on its consolidated financial position, results of operations, or cash flows.

Shareholders_Equity

Shareholders' Equity	3 Months Ended
	Oct. 26, 2013
Stockholders' Equity Note [Abstract]	'
Shareholders' Equity	'
	13	Shareholders’ Equity
	(a)	Cash Dividends on Shares of Common Stock
	During the three months ended October 26, 2013, the Company declared and paid cash dividends of $0.17 per common share, or $914 million, on the Company’s outstanding common stock. During the three months ended October 27, 2012, the Company declared and paid cash dividends of $0.14 per common share, or $744 million, on the Company’s outstanding common stock.
	Any future dividends will be subject to the approval of the Company’s Board of Directors.
	(b)	Stock Repurchase Program
	In September 2001, the Company’s Board of Directors authorized a stock repurchase program. As of October 26, 2013, the Company’s Board of Directors had authorized an aggregate repurchase of up to $82 billion of common stock under this program.
	In November 2013, the Company’s Board of Directors authorized up to $15 billion in additional repurchases of common stock under this program. The remaining authorized amount for stock repurchases under this program, including the additional authorization, is approximately $16.1 billion, with no termination date. A summary of the stock repurchase activity under the stock repurchase program, reported based on the trade date, is summarized as follows (in millions, except per-share amounts):
		Shares Repurchased	Weighted- Average Price per Share		Amount Repurchased
	Cumulative balance at July 27, 2013	3,868	$	20.4	$	78,906
	Repurchase of common stock under the stock repurchase program	84	23.65		2,000
	Cumulative balance at October 26, 2013	3,952	$	20.47	$	80,906
	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. Issuance of common stock and the tax benefit related to employee stock incentive plans are recorded as an increase to common stock and additional paid-in capital.
	(c)	Other Repurchases of Common Stock
	For the three months ended October 26, 2013 and October 27, 2012, the Company repurchased approximately 12 million and 11 million shares, or $286 million and $203 million, of common stock, respectively, in settlement of employee tax withholding obligations due upon the vesting of restricted stock or stock units.

Employee_Benefit_Plans

Employee Benefit Plans	3 Months Ended
	Oct. 26, 2013
Employee Service Share-based Compensation, Aggregate Disclosures [Abstract]	'
Employee Benefit Plans	'
	14	Employee Benefit Plans
	(a)	Employee Stock Incentive Plans
	Stock Incentive Plan Program Description   As of October 26, 2013, the Company had five stock incentive plans: the 2005 Stock Incentive Plan (the “2005 Plan”); the 1996 Stock Incentive Plan (the “1996 Plan”); the 1997 Supplemental Stock Incentive Plan (the “Supplemental Plan”); the Cisco Systems, Inc. SA Acquisition Long-Term Incentive Plan (the “SA Acquisition Plan”); and the Cisco Systems, Inc. WebEx Acquisition Long-Term Incentive Plan (the “WebEx Acquisition 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. Since the inception of the stock incentive plans, the Company has granted share-based awards to a significant percentage of its employees, and the majority has been granted to employees below the vice president level. The Company’s primary stock incentive plans are summarized as follows:
	2005 Plan As of October 26, 2013, the maximum number of shares issuable under the 2005 Plan over its term was 559 million shares plus the amount of any shares underlying awards outstanding on November 15, 2007 under the 1996 Plan, the SA Acquisition Plan, and the WebEx Acquisition Plan that are forfeited or are terminated for any other reason before being exercised or settled. If any awards granted under the 2005 Plan are forfeited or are terminated for any other reason before being exercised or settled, then the shares underlying the awards will again be available under the 2005 Plan. Pursuant to an amendment of the 2005 Plan that was approved by the Company’s shareholders on November 19, 2013, the maximum number of shares issuable under the 2005 Plan over its term was increased to 694 million.
	Pursuant to an amendment approved by the Company’s shareholders on November 12, 2009, the number of shares available for issuance under the 2005 Plan was reduced by 1.5 shares for each share awarded as a stock grant or a stock unit, and any shares underlying awards outstanding under the 1996 Plan, the SA Acquisition Plan, and the WebEx Acquisition Plan that expire unexercised at the end of their maximum terms become available for reissuance under the 2005 Plan. The 2005 Plan permits the granting of stock options, restricted stock, and restricted stock units (RSUs), the vesting of which may be performance-based or market-based along with the requisite service requirement, and stock appreciation rights to employees (including employee directors and officers), consultants of the Company and its subsidiaries and affiliates, and non-employee directors of the Company. Stock options and stock appreciation rights granted under the 2005 Plan have an exercise price of at least 100% of the fair market value of the underlying stock on the grant date 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 on each of the first through fifth or fourth anniversaries of the date of the grant, respectively. Performance-based and market-based RSUs typically vest at the end of the three year requisite service period or earlier if the award recipient meets certain retirement eligibility conditions. 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.
	1996 Plan The 1996 Plan expired on December 31, 2006, and the Company can no longer make equity awards under the 1996 Plan. The maximum number of shares issuable over the term of the 1996 Plan was 2.5 billion shares. Stock options granted under the 1996 Plan have an exercise price of at least 100% of the fair market value of the underlying stock on the grant date and expire no later than nine years from the grant date. The stock options generally became exercisable for 20% or 25% of the option shares one year from the date of grant and then ratably over the following 48 or 36, months respectively. Certain other grants utilized a 60-month ratable vesting schedule. In addition, the Board of Directors, or other committees administering the 1996 Plan, had the discretion to use a different vesting schedule and did so from time to time.
	Supplemental Plan The Supplemental Plan expired on December 31, 2007, and the Company can no longer make equity awards under the Supplemental Plan. Officers and members of the Company’s Board of Directors were not eligible to participate in the Supplemental Plan. Nine million shares were reserved for issuance under the Supplemental Plan.
	Acquisition Plans In connection with the Company’s acquisitions of Scientific-Atlanta, Inc. (“Scientific-Atlanta”) and WebEx Communications, Inc. (“WebEx”), the Company adopted the SA Acquisition Plan and the WebEx Acquisition Plan, respectively, each effective upon completion of the applicable acquisition. These plans constitute assumptions, amendments, restatements, and renamings of the 2003 Long-Term Incentive Plan of Scientific-Atlanta and the WebEx Communications, Inc. Amended and Restated 2000 Stock Incentive Plan, respectively. The plans permit the grant of stock options, stock, stock units, and stock appreciation rights to certain employees of the Company and its subsidiaries and affiliates who had been employed by Scientific-Atlanta or its subsidiaries or WebEx or its subsidiaries, as applicable. As a result of the shareholder approval of the amendment and extension of the 2005 Plan, as of November 15, 2007, the Company will no longer make stock option grants or direct share issuances under either the SA Acquisition Plan or the WebEx Acquisition Plan.
	(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 471.4 million shares of the Company’s common stock have been reserved for issuance as of October 26, 2013. Eligible employees are offered shares through a 24-month offering period, which consists of four consecutive 6-month purchase periods. Employees may purchase a limited number of shares of the Company’s stock at a discount of up to 15% of the lesser of the market value at the beginning of the offering period or the end of each 6-month purchase period. The Purchase Plan is scheduled to terminate on January 3, 2020. No shares were issued under the Purchase Plan during each of the three months ended October 26, 2013 and October 27, 2012. As of October 26, 2013, 51 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 restricted stock units granted to employees. The following table summarizes share-based compensation expense (in millions):
		Three Months Ended
		October 26,				October 27,
		2013				2012
	Cost of sales - product	$	10			$	10
	Cost of sales - service	33				35
	Share-based compensation expense in cost of sales	43				45
	Research and development	92				84
	Sales and marketing	123				130
	General and administrative	54				50
	Restructuring and other charges	(3		)		(3		)
	Share-based compensation expense in operating expenses	266				261
	Total share-based compensation expense	$	309			$	306
	Income tax benefit for share-based compensation	$	78			$	79
	As of October 26, 2013, the total compensation cost related to unvested share-based awards not yet recognized was $2.4 billion, which is expected to be recognized over approximately 2.5 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 28, 2012	218
	Restricted stock, stock units, and other share-based awards granted	(102	)
	Share-based awards canceled/forfeited/expired	115
	Other	(3	)
	BALANCE AT JULY 27, 2013	228
	Restricted stock, stock units, and other share-based awards granted	(24	)
	Share-based awards canceled/forfeited/expired	13
	Other	—
	BALANCE AT OCTOBER 26, 2013	217
	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 restricted stock units, is as follows (in millions, except per-share amounts):
		Restricted Stock/Stock Units			Weighted-Average Grant Date Fair Value per Share				Aggregated Fair Market Value
	UNVESTED BALANCE AT JULY 28, 2012	128			$	19.46
	Granted and assumed	72			18.52
	Vested	(46	)		20.17				$	932
	Canceled/forfeited	(11	)		18.91
	UNVESTED BALANCE AT JULY 27, 2013	143			18.8
	Granted and assumed	21			22.53
	Vested	(35	)		19.51				$	834
	Canceled/forfeited	(5	)		18.32
	UNVESTED BALANCE AT OCTOBER 26, 2013	124			$	19.26
	(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 28, 2012	520			$	22.68
	Assumed from acquisitions	10			0.77
	Exercised	(154	)		18.51
	Canceled/forfeited/expired	(100	)		22.18
	BALANCE AT JULY 27, 2013	276			24.44
	Assumed from acquisitions	3			6.03
	Exercised	(24	)		19.01
Canceled/forfeited/expired	(6	)		29.16
BALANCE AT OCTOBER 26, 2013	249			$	24.62
The following table summarizes significant ranges of outstanding and exercisable stock options as of October 26, 2013 (in millions, except years and share prices):
	STOCK OPTIONS OUTSTANDING												STOCK OPTIONS EXERCISABLE
Range of Exercise Prices	Number Outstanding			Weighted-Average Remaining Contractual Life		Weighted-Average Exercise Price per Share				Aggregate Intrinsic Value			Number Exercisable		Weighted-Average Exercise Price per Share		Aggregate Intrinsic Value
				(in Years)
$  0.01 – 15.00	11			5.54		$	4.66			$	198		6		$	6.25	$	96
15.01 – 18.00	35			0.96		17.79				165			35		17.79		165
18.01 – 20.00	13			0.81		19.13				43			13		19.13		43
20.01 – 25.00	79			1.99		22.83				12			79		22.83		12
25.01 – 35.00	111			2.87		30.69				—			111		30.69		—
Total	249			2.34		$	24.62			$	418		244		$	25.08	$	316
The aggregate intrinsic value in the preceding table represents the total pretax intrinsic value, based on the Company’s closing stock price of $22.46 as of October 25, 2013, that would have been received by the option holders had those option holders exercised their stock options as of that date. The total number of in-the-money stock options exercisable as of October 26, 2013 was 61 million. As of July 27, 2013, 271 million outstanding stock options were exercisable and the weighted-average exercise price was $24.84.
(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 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 RESTRICTED STOCK UNITS
Three Months Ended	October 26, 2013				October 27, 2012				October 26, 2013			October 27, 2012
Number of shares granted (in millions)	10				11				4			4
Grant date fair value per share	$	23.11			$	17.65			$	22.7		$	19.26
Weighted-average assumptions/inputs:
Expected dividend yield	2.7		%		2.9		%		2.3		%	2.9		%
Range of risk-free interest rates	0.0% - 1.4%				0.1% - 0.7%				0.0% - 1.4%			0.1% - 0.7%
Range of expected volatilities for index	N/A				N/A				17.4% - 70.5%			18.3% - 64.6%
The PRSUs granted during the first quarters of fiscal 2014 and fiscal 2013 are contingent on the achievement of the Company’s financial performance metrics or its 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.

Comprehensive_Income

Comprehensive Income	3 Months Ended
	Oct. 26, 2013
Comprehensive Income [Abstract]	'
Comprehensive Income (Loss) Note [Text Block]	'
	15	Comprehensive Income
	The components of AOCI, net of tax, and the other comprehensive income (loss), excluding noncontrolling interest, for the three months ended October 26, 2013 and October 27, 2012 are summarized as follows (in millions):
		Net Unrealized Gains on Investments				Net Unrealized Gains (Losses) Cash Flow Hedging Instruments				Cumulative Translation Adjustment and Other			Accumulated Other Comprehensive Income
	BALANCE AT JULY 27, 2013	$	379			$	8			$	221		$	608
	Other comprehensive income before reclassifications attributable to Cisco Systems, Inc.	170				38				76			284
	Amounts reclassified out of other comprehensive income	(83		)		(9		)		—			(92		)
	Tax benefit (expense)	(22		)		(3		)		(3		)	(28		)
	BALANCE AT OCTOBER 26, 2013	$	444			$	34			$	294		$	772
		Net Unrealized Gains on Investments				Net Unrealized Gains (Losses) Cash Flow Hedging Instruments				Cumulative Translation Adjustment and Other			Accumulated Other Comprehensive Income
	BALANCE AT JULY 28, 2012	$	409			$	(53	)		$	305		$	661
	Other comprehensive income before reclassifications attributable to Cisco Systems, Inc.	3				66				124			193
	Amounts reclassified out of other comprehensive income	(27		)		5				—			(22		)
	Tax benefit (expense)	11				—				(10		)	1
	BALANCE AT OCTOBER 27, 2012	$	396			$	18			$	419		$	833
	The amounts reclassified out of other comprehensive income into the Consolidated Statements of Operations, with line item location, during each period were as follows (in millions):
			Three Months Ended
			October 26,				October 27,
			2013				2012
	Comprehensive Income Components		Income Before Taxes								Line Item in Statements of Operations
	Net unrealized gains on available-for-sale investments
			$	(83	)		$	(27	)		Other income (loss), net
	Net unrealized gains and losses on cash flow hedging instruments
	Foreign currency derivatives		(7		)		4				Operating expenses
	Foreign currency derivatives		(2		)		1				Cost of sales - service
			(9		)		5
	Total amounts reclassified out of other comprehensive income		$	(92	)		$	(22	)

Income_Taxes

Income Taxes	3 Months Ended
	Oct. 26, 2013
Income Tax Disclosure [Abstract]	'
Income Taxes	'
	16	Income Taxes
	The following table provides details of income taxes (in millions, except percentages):
		Three Months Ended
		October 26,			October 27,
		2013			2012
	Income before provision for income taxes	$	2,540		$	2,631
	Provision for income taxes	$	544		$	539
	Effective tax rate	21.4		%	20.5		%
	As of October 26, 2013, the Company had $1.8 billion of unrecognized tax benefits, of which $1.6 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 it is reasonably possible that the unrecognized tax benefits at October 26, 2013 could be reduced by approximately $200 million in the next 12 months.

Segment_Information_And_Major_

Segment Information And Major Customers	3 Months Ended
	Oct. 26, 2013
Segment Reporting [Abstract]	'
Segment Information and Major Customers	'
	17	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, impacts to cost of sales from purchase accounting adjustments to inventory, charges related to asset impairments and restructurings, and certain other charges to the gross margin for each segment because management does not include this information in its measurement of the performance of the operating segments.
	Summarized financial information by segment for the three months ended October 26, 2013 and October 27, 2012, based on the Company’s internal management system and as utilized by the Company’s Chief Operating Decision Maker (“CODM”), is as follows (in millions):
		Three Months Ended
		October 26,			October 27,
		2013			2012
	Revenue:
	Americas	$	7,316		$	7,023
	EMEA	2,933			2,841
	APJC	1,836			2,012
	Total	$	12,085		$	11,876
	Gross margin:
	Americas	4,650			4,468
	EMEA	1,888			1,798
	APJC	1,079			1,176
	Segment total	7,617			7,442
	Unallocated corporate items	(210		)	(203		)
	Total	$	7,407		$	7,239
	Revenue in the United States, which is included in the Americas, was $6.4 billion and $6.1 billion for the three months ended October 26, 2013 and October 27, 2012, 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, Service Provider Video, Collaboration, Wireless, Data Center, Security, 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
		October 26,			October 27,
		2013			2012
	Revenue:
	Switching	$	3,754		$	3,629
	NGN Routing	2,043			2,055
	Collaboration	1,027			1,020
	Service Provider Video	987			1,149
	Data Center	601			417
	Wireless	540			499
	Security	365			338
	Other	80			190
	Product	9,397			9,297
	Service	2,688			2,579
	Total	$	12,085		$	11,876
	The Company has made certain reclassifications to the prior period amounts 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, as of October 26, 2013 and July 27, 2013 were attributable to its U.S. operations. The Company’s total cash and cash equivalents and investments held by various foreign subsidiaries were $42.0 billion and $40.4 billion as of October 26, 2013 and July 27, 2013, respectively, and the remaining $6.2 billion and $10.2 billion at the respective period ends was available in the United States.
	Property and equipment information is based on the physical location of the assets. The following table presents property and equipment information for geographic areas (in millions):
		October 26,			July 27,
		2013			2013
	Property and equipment, net:
	United States	$	2,687		$	2,780
	International	586			542
	Total	$	3,273		$	3,322

Net_Income_Per_Share

Net Income Per Share	3 Months Ended
	Oct. 26, 2013
Earnings Per Share [Abstract]	'
Net Income Per Share	'
	18	Net Income per Share
	The following table presents the calculation of basic and diluted net income per share (in millions, except per-share amounts):
		Three Months Ended
		October 26,		October 27,
		2013		2012
	Net income	$	1,996	$	2,092
	Weighted-average shares - basic	5,378		5,301
	Effect of dilutive potential common shares	52		33
	Weighted-average shares - diluted	5,430		5,334
	Net income per share - basic	$	0.37	$	0.39
	Net income per share - diluted	$	0.37	$	0.39
	Antidilutive employee share-based awards, excluded	174		438
	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_Pronouncemen1

Recent Accounting Pronouncements (Policies)	3 Months Ended
	Oct. 26, 2013
Summary of Significant Accounting Policies [Abstract]	'
New Accounting Updates Recently Adopted	'
	New Accounting Updates Recently Adopted
	In December 2011, the FASB issued an accounting standard update requiring enhanced disclosures about certain financial instruments and derivative instruments that are offset in the statement of financial position or that are subject to enforceable master netting arrangements or similar agreements. This accounting standard became effective for the Company in the first quarter of fiscal 2014. As a result of the application of this accounting standard update, the Company has provided additional disclosures in Note 11.
	In July 2012, the FASB issued an accounting standard update intended to simplify how an entity tests indefinite-lived intangible assets other than goodwill for impairment by providing entities with an option to perform a qualitative assessment to determine whether further impairment testing is necessary. This accounting standard update became effective for the Company beginning in the first quarter of fiscal 2014, and its adoption did not have any impact on the Company’s Consolidated Financial Statements.
	In February 2013, the FASB issued an accounting standard update to require reclassification adjustments from other comprehensive income to be presented either in the financial statements or in the notes to the financial statements. This accounting standard became effective for the Company in the first quarter of fiscal 2014. As a result of the application of this accounting standard update, the Company has provided additional disclosures in Note 15.
Description of New Accounting Pronouncements Not yet Adopted	'
	Recent Accounting Standards or Updates Not Yet Effective
	In March 2013, the FASB issued an accounting standard update requiring an entity to release into net income the entire amount of a cumulative translation adjustment related to its investment in a foreign entity when as a parent it either sells a part or all of its investment in the foreign entity or no longer holds a controlling financial interest in a subsidiary or group of assets within the foreign entity. This accounting standard update will be effective for the Company beginning in the first quarter of fiscal 2015. The Company is currently evaluating the impact of this accounting standard update on its Consolidated Financial Statements.
	In July 2013, the FASB issued an accounting standard update that provides explicit guidance on the financial statement presentation of an unrecognized tax benefit when a net operating loss carryforward or a tax credit carryforward exists. Under the new standard update, unrecognized tax benefit, or a portion of an unrecognized tax benefit, is to be presented in the financial statements as a reduction to a deferred tax asset for a net operating loss carryforward or a tax credit carryforward. This accounting standard update will be effective for the Company beginning in the first quarter fiscal 2015 and applied prospectively with early adoption permitted. The Company is currently evaluating the impact of this accounting standard update on its Consolidated Financial Statements.
Fair Value Measurement, Policy	'
	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.

Supplemental_Information_Table

Supplemental Information (Tables)	3 Months Ended
	Oct. 26, 2013
Stockholders' Equity Note [Abstract]	'
Stock Repurchases Since Inception Of Program [Table Text Block]	'
	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	3,952	$	18,664	$	62,242	$	80,906

Business_Combinations_Tables

Business Combinations (Tables)	3 Months Ended
	Oct. 26, 2013
Business Combinations [Abstract]	'
Schedule of Business Acquisitions, by Acquisition	'
	A summary of the allocation of the total purchase consideration is presented as follows (in millions):
		Purchase Consideration		Net Tangible Assets Acquired (Liabilities Assumed)			Purchased Intangible Assets		Goodwill
	Sourcefire, Inc.	$	2,449	$	81		$	577	$	1,791
	Composite Software, Inc.	160		(10		)	75		95
	Total	$	2,609	$	71		$	652	$	1,886

Goodwill_And_Purchased_Intangi1

Goodwill And Purchased Intangible Assets (Tables)	3 Months Ended
	Oct. 26, 2013
Goodwill and Intangible Assets Disclosure [Abstract]	'
Goodwill By Reportable Segment	'
	The following table presents the goodwill allocated to the Company’s reportable segments as of and during the three months ended October 26, 2013 (in millions):
			Balance at			Acquisitions				Other				Balance at
			July 27, 2013											26-Oct-13
	Americas		$	13,800		$	1,012			$	—			$	14,812
	EMEA		5,037			575				(1		)		5,611
	APJC		3,082			299				—				3,381
	Total		$	21,919		$	1,886			$	(1	)		$	23,804
Schedule Of Intangible Assets Acquired As Part Of Business Combination	'
	The following table presents details of the Company’s intangible assets acquired through business combinations completed during the three months ended October 26, 2013 (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
	Sourcefire, Inc.	7		$	400		5		$	129			3		$	26	$	22	$	577
	Composite Software, Inc.	6		60			3.9		14				0		—		1		75
	Total			$	460				$	143					$	26	$	23	$	652
Schedule Of Purchased Intangible Assets	'
	The following tables present details of the Company’s purchased intangible assets (in millions):
	October 26, 2013		Gross			Accumulated Amortization				Net
	Purchased intangible assets with finite lives:
	Technology		$	4,034		$	(1,529	)		$	2,505
	Customer relationships		1,698			(516		)		1,182
	Other		55			(11		)		44
	Total purchased intangible assets with finite lives		5,787			(2,056		)		3,731
	In-process research and development, with indefinite lives		104			—				104
	Total		$	5,891		$	(2,056	)		$	3,835
	27-Jul-13		Gross			Accumulated Amortization				Net
	Purchased intangible assets with finite lives:
	Technology		$	3,563		$	(1,366	)		$	2,197
	Customer relationships		1,566			(466		)		1,100
	Other		30			(10		)		20
	Total purchased intangible assets with finite lives		5,159			(1,842		)		3,317
	In-process research and development, with indefinite lives		86			—				86
	Total		$	5,245		$	(1,842	)		$	3,403
Schedule Of Amortization Of Purchased Intangible Assets	'
	The following table presents the amortization of purchased intangible assets (in millions):
			Three Months Ended
			October 26,			October 27,
			2013			2012
	Amortization of purchased intangible assets:
	Cost of sales		$	174		$	143
	Operating expenses		65			122
	Total		$	239		$	265
Schedule Of Estimated Future Amortization Expense Of Purchased Intangible Assets	'
	The estimated future amortization expense of purchased intangible assets with finite lives as of October 26, 2013 is as follows (in millions):
	Fiscal Year		Amount
	2014 (remaining nine months)		$	764
	2015		934
	2016		704
	2017		530
	2018		380
	Thereafter		419
	Total		$	3,731

Restructuring_And_Other_Charge1

Restructuring And Other Charges (Tables)	3 Months Ended
	Oct. 26, 2013
Restructuring Charges [Abstract]	'
Schedule of Restructuring and Related Costs	'
	The following table summarizes the activities related to the restructuring and other charges pursuant to the August Fiscal 2014 Plan (in millions):
	August Fiscal 2014 Plan	Employee			Other			Total
		Severance
	Gross charges in fiscal 2014	$	240		$	(3	)	$	237
	Cash payments	(70		)	—			(70		)
	Non-cash items	—			3			3
	Liability as of October 26, 2013	$	170		$	—		$	170

Balance_Sheet_Details_Tables

Balance Sheet Details (Tables)	3 Months Ended
	Oct. 26, 2013
Balance Sheet Details [Abstract]	'
Inventory Disclosure [Text Block]	'
	The following tables provide details of selected balance sheet items (in millions):
		October 26,			July 27,
		2013			2013
	Inventories:
	Raw materials	$	80		$	105
	Work in process	7			24
	Finished goods:
	Distributor inventory and deferred cost of sales	619			572
	Manufactured finished goods	464			480
	Total finished goods	1,083			1,052
	Service-related spares	257			256
	Demonstration systems	39			39
	Total	$	1,466		$	1,476
Property, Plant and Equipment Disclosure [Text Block]	'
	Property and equipment, net:
	Land, buildings, and building and leasehold improvements	$	4,340		$	4,426
	Computer equipment and related software	1,428			1,416
	Production, engineering, and other equipment	5,767			5,721
	Operating lease assets (1)	326			326
	Furniture and fixtures	498			497
		12,359			12,386
	Less accumulated depreciation and amortization (1)	(9,086		)	(9,064		)
	Total	$	3,273		$	3,322
	(1)      Accumulated depreciation related to operating lease assets was $207 and $203 as of October 26, 2013 and July 27, 2013, respectively.
Schedule of Other Assets, Noncurrent [Table Text Block]	'
	Other assets:
	Deferred tax assets	$	1,496		$	1,539
	Investments in privately held companies	884			833
	Other	760			743
	Total	$	3,140		$	3,115
Deferred Revenue, by Arrangement, Disclosure [Table Text Block]	'
	Deferred revenue:
	Service	$	8,896		$	9,403
	Product:
	Unrecognized revenue on product shipments and other deferred revenue	3,628			3,340
	Cash receipts related to unrecognized revenue from two-tier distributors	683			680
	Total product deferred revenue	4,311			4,020
	Total	$	13,207		$	13,423
	Reported as:
	Current	$	9,212		$	9,262
	Noncurrent	3,995			4,161
	Total	$	13,207		$	13,423

Financing_Receivables_And_Guar1

Financing Receivables And Guarantees (Tables)	3 Months Ended
	Oct. 26, 2013
Financing Receivables And Guarantees [Abstract]	'
Financing Receivables	'
	A summary of the Company’s financing receivables is presented as follows (in millions):
	October 26, 2013	Lease Receivables			Loan Receivables			Financed Service Contracts and Other			Total Financing Receivables
	Gross	$	3,813		$	1,808		$	3,018		$	8,639
	Unearned income	(264		)	—			—			(264		)
	Allowance for credit loss	(237		)	(93		)	(20		)	(350		)
	Total, net	$	3,312		$	1,715		$	2,998		$	8,025
	Reported as:
	Current	$	1,463		$	951		$	1,718		$	4,132
	Noncurrent	1,849			764			1,280			3,893
	Total, net	$	3,312		$	1,715		$	2,998		$	8,025
	27-Jul-13	Lease Receivables			Loan Receivables			Financed Service Contracts and Other			Total Financing Receivables
	Gross	$	3,780		$	1,649		$	3,136		$	8,565
	Unearned income	(273		)	—			—			(273		)
	Allowance for credit loss	(238		)	(86		)	(20		)	(344		)
	Total, net	$	3,269		$	1,563		$	3,116		$	7,948
	Reported as:
	Current	$	1,418		$	898		$	1,721		$	4,037
	Noncurrent	1,851			665			1,395			3,911
	Total, net	$	3,269		$	1,563		$	3,116		$	7,948
Contractual Maturities Of The Gross Lease Receivables	'
	Contractual maturities of the gross lease receivables at October 26, 2013 are summarized as follows (in millions):
	Fiscal Year		Amount
	2014 (remaining nine months)		$	1,338
	2015		1,251
	2016		746
	2017		364
	2018		109
	Thereafter		5
	Total		$	3,813
Schedule Of Internal Credit Risk Rating For Each Portfolio Segment	'
	Financing receivables categorized by the Company’s internal credit risk rating as of October 26, 2013 and July 27, 2013 are summarized as follows (in millions):
		INTERNAL CREDIT RISK RATING
	October 26, 2013	1 to 4			5 to 6			7 and Higher			Total			Residual Value		Gross Receivables,
																Net of Unearned Income
	Lease receivables	$	1,695		$	1,498		$	104		$	3,297		$	252	$	3,549
	Loan receivables	981			777			50			1,808			—		1,808
	Financed service contracts and other	1,792			1,110			116			3,018			—		3,018
	Total	$	4,468		$	3,385		$	270		$	8,123		$	252	$	8,375
		INTERNAL CREDIT RISK RATING
	27-Jul-13	1 to 4			5 to 6			7 and Higher			Total			Residual Value		Gross Receivables,
																Net of Unearned Income
	Lease receivables	$	1,681		$	1,482		$	93		$	3,256		$	251	$	3,507
	Loan receivables	842			777			30			1,649			—		1,649
	Financed service contracts and other	1,876			1,141			119			3,136			—		3,136
	Total	$	4,399		$	3,400		$	242		$	8,041		$	251	$	8,292
Schedule Of Financing Receivables By Portfolio Segment And Class Aging Analysis	'
	The following tables present the aging analysis of financing receivables as of October 26, 2013 and July 27, 2013 (in millions):
		DAYS PAST DUE (INCLUDES BILLED AND UNBILLED)
	26-Oct-13	31-60			61-90			91+			Total Past Due			Current		Gross Receivables,		Nonaccrual Financing Receivables		Impaired Financing Receivables
																Net of Unearned Income
	Lease receivables	$	135		$	60		$	148		$	343		$	3,206	$	3,549	$	28	$	24
	Loan receivables	28			2			16			46			1,762		1,808		7		17
	Financed service contracts and other	85			41			277			403			2,615		3,018		12		11
	Total	$	248		$	103		$	441		$	792		$	7,583	$	8,375	$	47	$	52
		DAYS PAST DUE (INCLUDES BILLED AND UNBILLED)
	27-Jul-13	31-60			61-90			91+			Total Past Due			Current		Gross Receivables,		Nonaccrual Financing Receivables		Impaired Financing Receivables
																Net of Unearned Income
	Lease receivables	$	85		$	48		$	124		$	257		$	3,250	$	3,507	$	27	$	22
	Loan receivables	6			3			11			20			1,629		1,649		11		9
	Financed service contracts and other	75			48			392			515			2,621		3,136		18		11
	Total	$	166		$	99		$	527		$	792		$	7,500	$	8,292	$	56	$	42
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 October 26, 2013	Lease Receivables			Loan Receivables			Financed Service Contracts and Other			Total
	Allowance for credit loss as of July 27, 2013	$	238		$	86		$	20		$	344
	Provisions	(3		)	6			—			3
	Foreign exchange and other	2			1			—			3
	Allowance for credit loss as of October 26, 2013	$	237		$	93		$	20		$	350
	Gross receivables as of October 26, 2013, net of unearned income	$	3,549		$	1,808		$	3,018		$	8,375
		CREDIT LOSS ALLOWANCES
	Three Months Ended October 27, 2012	Lease Receivables			Loan Receivables			Financed Service Contracts and Other			Total
	Allowance for credit loss as of July 28, 2012	$	247		$	122		$	11		$	380
	Provisions	(2		)	(10		)	1			(11		)
	Foreign exchange and other	3			2			—			5
	Allowance for credit loss as of October 27, 2012	$	248		$	114		$	12		$	374
	Gross receivables as of October 27, 2012, net of unearned income	$	3,340		$	1,816		$	2,639		$	7,795
Financing Guarantees	'
	The aggregate amounts of financing guarantees outstanding at October 26, 2013 and July 27, 2013, representing the total maximum potential future payments under financing arrangements with third parties along with the related deferred revenue, are summarized in the following table (in millions):
		October 26,			July 27,
		2013			2013
	Maximum potential future payments relating to financing guarantees:
	Channel partner	$	483		$	438
	End user	223			237
	Total	$	706		$	675
	Deferred revenue associated with financing guarantees:
	Channel partner	$	(232	)	$	(225	)
	End user	(189		)	(191		)
	Total	$	(421	)	$	(416	)
	Maximum potential future payments relating to financing guarantees, net of associated deferred revenue	$	285		$	259

Investments_Tables

Investments (Tables)	3 Months Ended
	Oct. 26, 2013
Investments [Abstract]	'
Schedule of Available-for-sale Securities Reconciliation	'
	The following tables summarize the Company’s available-for-sale investments (in millions):
	October 26, 2013	Amortized Cost				Gross Unrealized Gains				Gross Unrealized Losses			Fair Value
	Fixed income securities:
	U.S. government securities	$	28,603			$	37			$	(2	)	$	28,638
	U.S. government agency securities	2,394				5				—			2,399
	Non-U.S. government and agency securities	907				3				(1		)	909
	Corporate debt securities	7,974				73				(21		)	8,026
	U.S. agency mortgage-backed securities	456				5				—			461
	Total fixed income securities	40,334				123				(24		)	40,433
	Publicly traded equity securities	1,820				696				(2		)	2,514
	Total	$	42,154			$	819			$	(26	)	$	42,947
	July 27, 2013	Amortized Cost				Gross Unrealized Gains				Gross Unrealized Losses			Fair Value
	Fixed income securities:
	U.S. government securities	$	27,814			$	22			$	(13	)	$	27,823
	U.S. government agency securities	3,083				7				(1		)	3,089
	Non-U.S. government and agency securities	1,094				3				(2		)	1,095
	Corporate debt securities	7,876				55				(50		)	7,881
	Total fixed income securities	39,867				87				(66		)	39,888
	Publicly traded equity securities	2,063				738				(4		)	2,797
	Total	$	41,930			$	825			$	(70	)	$	42,685
Schedule of Realized Gain (Loss)	'
	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
			October 26,				October 27,
			2013				2012
	Gross realized gains		$	95			$	63
	Gross realized losses		(12		)		(36		)
	Total		$	83			$	27
	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
			October 26,				October 27,
			2013				2012
	Net gains (losses) on investments in publicly traded equity securities		$	75			$	10
	Net gains on investments in fixed income securities		8				17
	Total		$	83			$	27
Schedule of Unrealized Loss on Investments	'
	The following tables present the breakdown of the available-for-sale investments with gross unrealized losses and the duration that those losses had been unrealized at October 26, 2013 and July 27, 2013 (in millions):
		UNREALIZED LOSSES LESS THAN 12 MONTHS								UNREALIZED LOSSES 12 MONTHS OR GREATER					TOTAL
	October 26, 2013	Fair Value				Gross Unrealized Losses				Fair Value			Gross Unrealized Losses		Fair Value		Gross Unrealized Losses
	Fixed income securities:
	U.S. government securities	$	3,303			$	(2	)		$	8		$	—	$	3,311	$	(2	)
	U.S. government agency securities	201				—				—			—		201		—
	Non-U.S. government and agency securities	208				(1		)		2			—		210		(1		)
	Corporate debt securities	2,357				(21		)		13			—		2,370		(21		)
	U.S. agency mortgage-backed securities	32				—				—			—		32		—
	Total fixed income securities	6,101				(24		)		23			—		6,124		(24		)
	Publicly traded equity securities	45				(2		)		—			—		45		(2		)
	Total	$	6,146			$	(26	)		$	23		$	—	$	6,169	$	(26	)
		UNREALIZED LOSSES LESS THAN 12 MONTHS								UNREALIZED LOSSES 12 MONTHS OR GREATER					TOTAL
	27-Jul-13	Fair Value				Gross Unrealized Losses				Fair Value			Gross Unrealized Losses		Fair Value		Gross Unrealized Losses
	Fixed income securities:
	U.S. government securities	$	7,865			$	(13	)		$	—		$	—	$	7,865	$	(13	)
	U.S. government agency securities	294				(1		)		—			—		294		(1		)
	Non-U.S. government and agency securities	432				(2		)		—			—		432		(2		)
	Corporate debt securities	3,704				(50		)		4			—		3,708		(50		)
	Total fixed income securities	12,295				(66		)		4			—		12,299		(66		)
	Publicly traded equity securities	278				(4		)		—			—		278		(4		)
	Total	$	12,573			$	(70	)		$	4		$	—	$	12,577	$	(70	)
Investments Classified by Contractual Maturity Date	'
	The following table summarizes the maturities of the Company’s fixed income securities at October 26, 2013 (in millions):
		Amortized Cost				Fair Value
	Less than 1 year	$	15,286			$	15,297
	Due in 1 to 2 years	12,310				12,346
	Due in 2 to 5 years	12,160				12,204
	Due after 5 years	578				586
	Total	$	40,334			$	40,433

Fair_Value_Tables

Fair Value (Tables)	3 Months Ended
	Oct. 26, 2013
Fair Value Disclosures [Abstract]	'
Schedule of Fair Value, Assets and Liabilities Measured on Recurring Basis	'
	Assets and liabilities measured at fair value on a recurring basis as of October 26, 2013 and July 27, 2013 were as follows (in millions):
		26-Oct-13										27-Jul-13
		FAIR VALUE MEASUREMENTS										FAIR VALUE MEASUREMENTS
		Level 1			Level 2				Total Balance			Level 1				Level 2		Total Balance
	Assets
	Cash equivalents:
	Money market funds	$	3,145		$	—			$	3,145		$	6,045			$	—	$	6,045
	Available-for-sale investments:
	U.S. government securities	—			28,638				28,638			—				27,823		27,823
	U.S. government agency securities	—			2,399				2,399			—				3,089		3,089
	Non-U.S. government and agency securities	—			909				909			—				1,095		1,095
	Corporate debt securities	—			8,026				8,026			—				7,881		7,881
	U.S. agency mortgage-backed securities	—			461				461			—				—		—
	Publicly traded equity securities	2,514			—				2,514			2,797				—		2,797
	Derivative assets	—			224				224			—				182		182
	Total	$	5,659		$	40,657			$	46,316		$	8,842			$	40,070	$	48,912
	Liabilities:
	Derivative liabilities	$	—		$	145			$	145		$	—			$	171	$	171
	Total	$	—		$	145			$	145		$	—			$	171	$	171
Fair Value, Assets and Liabilities Measured on Nonrecurring Basis	'
	The following table presents the Company’s financial instruments and nonfinancial 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 (in millions):
			26-Oct-13							27-Oct-12
			Net Carrying Value as of End of Period			Total Losses for the Period Ended				Net Carrying Value as of End of Period			Total Losses for the Period Ended
	Investments in privately held companies		$	—		$	(1	)		$	42		$	(10	)

Borrowings_Tables

Borrowings (Tables)	3 Months Ended
	Oct. 26, 2013
Debt Disclosure [Abstract]	'
Schedule Of Short-Term Debt	'
	The following table summarizes the Company’s short-term debt (in millions, except percentages):
		October 26, 2013						July 27, 2013
		Amount			Weighted-Average Interest Rate			Amount			Weighted-Average Interest Rate
	Current portion of long-term debt	$	3,269		0.61	%		$	3,273		0.63	%
	Other notes and borrowings	10			2.52	%		10			2.52	%
	Total short-term debt	$	3,279					$	3,283
Schedule Of Long-Term Debt	'
	The following table summarizes the Company’s long-term debt (in millions, except percentages):
		October 26, 2013					July 27, 2013
		Amount			Effective Rate		Amount			Effective Rate
	Senior Notes:
	Floating-rate notes, due 2014	$	1,250		0.61%		$	1,250		0.62%
	1.625% fixed-rate notes, due 2014	2,000			0.62%		2,000			0.64%
	2.90% fixed-rate notes, due 2014	500			3.11%		500			3.11%
	5.50% fixed-rate notes, due 2016	3,000			3.06%		3,000			3.07%
	3.15% fixed-rate notes, due 2017	750			0.82%		750			0.84%
	4.95% fixed-rate notes, due 2019	2,000			4.69%		2,000			4.70%
	4.45% fixed-rate notes, due 2020	2,500			3.73%		2,500			4.15%
	5.90% fixed-rate notes, due 2039	2,000			6.11%		2,000			6.11%
	5.50% fixed-rate notes, due 2040	2,000			5.67%		2,000			5.67%
	Other long-term debt	23			1.32%		21			1.46%
	Total	16,023					16,021
	Unaccreted discount	(63		)			(65		)
	Hedge accounting fair value adjustments	256					245
	Total	$	16,216				$	16,201
	Reported as:
	Current portion of long-term debt	$	3,269				$	3,273
	Long-term debt	12,947					12,928
	Total	$	16,216				$	16,201
Schedule Of Principal Payments For Long-Term Debt	'
	As of October 26, 2013, future principal payments for long-term debt, including the current portion, are summarized as follows (in millions):
	Fiscal Year	Amount
	2014 (remaining nine months)	$	3,264
	2015	505
	2016	3,003
	2017	751
	2018	—
	Thereafter	8,500
	Total	$	16,023

Derivative_Instruments_Tables

Derivative Instruments (Tables)	3 Months Ended
	Oct. 26, 2013
Derivative Instruments and Hedging Activities Disclosure [Abstract]	'
Derivatives Recorded At Fair Value	'
	The fair values of the Company’s derivative instruments and the line items on the Consolidated Balance Sheets to which they were recorded are summarized as follows (in millions):
		DERIVATIVE ASSETS										DERIVATIVE LIABILITIES
		Balance Sheet Line Item		October 26,				July 27,				Balance Sheet Line Item		October 26,			July 27,
				2013				2013						2013			2013
	Derivatives designated as hedging instruments:
	Foreign currency derivatives	Other current assets		$	57			$	33			Other current liabilities		$	10		$	7
	Interest rate derivatives	Other assets		164				147				Other long-term liabilities		—			2
	Equity derivatives	Other current assets		—				—				Other current liabilities		122			155
	Total			221				180						132			164
	Derivatives not designated as hedging instruments:
	Foreign currency derivatives	Other current assets		3				2				Other current liabilities		13			7
	Total			$	224			$	182					$	145		$	171
Gains And Losses On Derivatives Designated As Cash Flow Hedges	'
	The effects of the Company’s cash flow and net investment hedging instruments on OCI and the Consolidated Statements of Operations are summarized as follows (in millions):
	GAINS (LOSSES) RECOGNIZED										GAINS (LOSSES) RECLASSIFIED FROM
	IN OCI ON DERIVATIVES FOR THE										AOCI INTO INCOME FOR THE
	THREE MONTHS ENDED (EFFECTIVE PORTION)										THREE MONTHS ENDED (EFFECTIVE PORTION)
	Derivatives designated as cash flow hedging instruments:		October 26,				October 27,				Line Item in Statements of Operations		October 26,			October 27,
			2013				2012						2013			2012
	Foreign currency derivatives		$	38			$	66			Operating expenses		$	7		$	(4	)
											Cost of sales - service		2			(1		)
	Total		$	38			$	66					$	9		$	(5	)
	Derivatives designated as net investment hedging instruments:
	Foreign currency derivatives		$	(19	)		$	(24	)		Other income (loss), net		$	—		$	—
Schedule Of Derivative Fair Value Hedge Instruments Gain Loss In Statement Of Financial Performance [Text Block]	'
	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 DERIVATIVES								GAINS (LOSSES) RELATED TO HEDGED
					INSTRUMENTS FOR THE THREE MONTHS ENDED								ITEMS FOR THE THREE MONTHS ENDED
	Derivatives Designated as Fair Value Hedging Instruments		Line Item in Statements of Operations		October 26,				October 27,				October 26,			October 27,
					2013				2012				2013			2012
	Equity derivatives		Other income (loss), net		$	(35	)		$	(3	)		$	35		$	3
	Interest rate derivatives		Interest expense		18				(18		)		(20		)	18
	Total				$	(17	)		$	(21	)		$	15		$	21
Effect Of Derivative Instruments Not Designated As Hedges On Consolidated Statement Of Operations Summary	'
	The effect on the Consolidated Statements of Operations of derivative instruments not designated as hedges is summarized as follows (in millions):
					GAINS (LOSSES) FOR THE THREE MONTHS ENDED
	Derivatives Not Designated as Hedging Instruments		Line Item in Statements of Operations		October 26,				October 27,
					2013				2012
	Foreign currency derivatives		Other income (loss), net		$	43			$	53
	Total return swaps - deferred compensation		Operating expenses		17				14
	Equity derivatives		Other income (loss), net		11				9
	Total				$	71			$	76
Schedule Of Notional Amounts Of Derivatives Outstanding	'
	The notional amounts of the Company’s outstanding derivatives are summarized as follows (in millions):
		October 26,				July 27,
		2013				2013
	Derivatives designated as hedging instruments:
	Foreign currency derivatives - cash flow hedges	$	1,772			$	1,885
	Interest rate derivatives	5,750				5,250
	Net investment hedging instruments	577				662
	Equity derivatives	779				1,098
	Derivatives not designated as hedging instruments:
	Foreign currency derivatives	3,526				3,739
	Total return swaps-deferred compensation	396				358
	Total	$	12,800			$	12,992
Offsetting Assets [Table Text Block]	'
	As of October 26, 2013 and July 27, 2013, information related to these offsetting arrangements was as follows (in millions):
		October 26, 2013
		DERIVATIVES OFFSET IN BALANCE SHEET												DERIVATIVES ELIGIBLE FOR OFFSETTING
		Gross Derivative Amounts				Gross Derivative Amounts Offset in Balance Sheet				Net Amount				Gross Derivative Amounts			Gross Derivative Amounts Eligible for Offsetting			Net Amount
	Fair value of assets	$	224			$	—			$	224			$	224		$	(99	)	$	125
	Fair value of liabilities	$	145			$	—			$	145			$	145		$	(99	)	$	46
		27-Jul-13
		DERIVATIVES OFFSET IN BALANCE SHEET												DERIVATIVES ELIGIBLE FOR OFFSETTING
		Gross Derivative Amounts				Gross Derivative Amounts Offset in Balance Sheet				Net Amount				Gross Derivative Amounts			Gross Derivative Amounts Eligible for Offsetting			Net Amount
	Fair value of assets	$	182			$	—			$	182			$	182		$	(120	)	$	62
	Fair value of liabilities	$	171			$	—			$	171			$	171		$	(120	)	$	51

Commitments_And_Contingencies_

Commitments And Contingencies (Tables)	3 Months Ended
	Oct. 26, 2013
Commitments and Contingencies Disclosure [Abstract]	'
Schedule Of Future Annual Minimum Lease Payments Under All Noncancelable Operating Leases	'
	Future minimum lease payments under all noncancelable operating leases with an initial term in excess of one year as of October 26, 2013 are as follows (in millions):
	Fiscal Year	Amount
	2014 (remaining nine months)	$	293
	2015	314
	2016	169
	2017	103
	2018	75
	Thereafter	198
	Total	$	1,152
Schedule Of Product Warranty Liability	'
	The following table summarizes the activity related to product warranty liability during the three months ended October 26, 2013 and October 27, 2012 (in millions):
		Three Months Ended
		October 26,			October 27,
		2013			2012
	Balance at beginning of period	$	431		$	415
	Provision for warranties issued	240			162
	Payments	(179		)	(155		)
	Balance at end of period	$	492		$	422

Shareholders_Equity_Tables

Shareholders' Equity (Tables)	3 Months Ended
	Oct. 26, 2013
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 27, 2013	3,868	$	20.4	$	78,906
	Repurchase of common stock under the stock repurchase program	84	23.65		2,000
	Cumulative balance at October 26, 2013	3,952	$	20.47	$	80,906

Employee_Benefit_Plans_Tables

Employee Benefit Plans (Tables)	3 Months Ended
	Oct. 26, 2013
Employee Service Share-based Compensation, Aggregate Disclosures [Abstract]	'
Summary Of Share-Based Compensation Expense	'
	Share-based compensation expense consists primarily of expenses for stock options, stock purchase rights, restricted stock, and restricted stock units granted to employees. The following table summarizes share-based compensation expense (in millions):
		Three Months Ended
		October 26,				October 27,
		2013				2012
	Cost of sales - product	$	10			$	10
	Cost of sales - service	33				35
	Share-based compensation expense in cost of sales	43				45
	Research and development	92				84
	Sales and marketing	123				130
	General and administrative	54				50
	Restructuring and other charges	(3		)		(3		)
	Share-based compensation expense in operating expenses	266				261
	Total share-based compensation expense	$	309			$	306
	Income tax benefit for share-based compensation	$	78			$	79
Share-Based Awards Available for Grant [Table Text Block]	'
	A summary of share-based awards available for grant is as follows (in millions):
		Share-Based Awards Available for Grant
	BALANCE AT JULY 28, 2012	218
	Restricted stock, stock units, and other share-based awards granted	(102	)
	Share-based awards canceled/forfeited/expired	115
	Other	(3	)
	BALANCE AT JULY 27, 2013	228
	Restricted stock, stock units, and other share-based awards granted	(24	)
	Share-based awards canceled/forfeited/expired	13
	Other	—
	BALANCE AT OCTOBER 26, 2013	217
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 restricted stock units, is as follows (in millions, except per-share amounts):
		Restricted Stock/Stock Units			Weighted-Average Grant Date Fair Value per Share				Aggregated Fair Market Value
	UNVESTED BALANCE AT JULY 28, 2012	128			$	19.46
	Granted and assumed	72			18.52
	Vested	(46	)		20.17				$	932
	Canceled/forfeited	(11	)		18.91
	UNVESTED BALANCE AT JULY 27, 2013	143			18.8
	Granted and assumed	21			22.53
	Vested	(35	)		19.51				$	834
	Canceled/forfeited	(5	)		18.32
	UNVESTED BALANCE AT OCTOBER 26, 2013	124			$	19.26
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 28, 2012	520			$	22.68
	Assumed from acquisitions	10			0.77
	Exercised	(154	)		18.51
	Canceled/forfeited/expired	(100	)		22.18
	BALANCE AT JULY 27, 2013	276			24.44
	Assumed from acquisitions	3			6.03
	Exercised	(24	)		19.01
	Canceled/forfeited/expired	(6	)		29.16
	BALANCE AT OCTOBER 26, 2013	249			$	24.62
Summary Of Significant Ranges Of Outstanding And Exercisable Stock Options	'
	The following table summarizes significant ranges of outstanding and exercisable stock options as of October 26, 2013 (in millions, except years and share prices):
		STOCK OPTIONS OUTSTANDING												STOCK OPTIONS EXERCISABLE
	Range of Exercise Prices	Number Outstanding			Weighted-Average Remaining Contractual Life		Weighted-Average Exercise Price per Share				Aggregate Intrinsic Value			Number Exercisable		Weighted-Average Exercise Price per Share		Aggregate Intrinsic Value
					(in Years)
	$  0.01 – 15.00	11			5.54		$	4.66			$	198		6		$	6.25	$	96
	15.01 – 18.00	35			0.96		17.79				165			35		17.79		165
	18.01 – 20.00	13			0.81		19.13				43			13		19.13		43
	20.01 – 25.00	79			1.99		22.83				12			79		22.83		12
	25.01 – 35.00	111			2.87		30.69				—			111		30.69		—
	Total	249			2.34		$	24.62			$	418		244		$	25.08	$	316
Schedule of Assumptions Used [Table Text Block]	'
		RESTRICTED STOCK UNITS								PERFORMANCE RESTRICTED STOCK UNITS
	Three Months Ended	October 26, 2013				October 27, 2012				October 26, 2013			October 27, 2012
	Number of shares granted (in millions)	10				11				4			4
	Grant date fair value per share	$	23.11			$	17.65			$	22.7		$	19.26
	Weighted-average assumptions/inputs:
	Expected dividend yield	2.7		%		2.9		%		2.3		%	2.9		%
	Range of risk-free interest rates	0.0% - 1.4%				0.1% - 0.7%				0.0% - 1.4%			0.1% - 0.7%
	Range of expected volatilities for index	N/A				N/A				17.4% - 70.5%			18.3% - 64.6%

Comprehensive_Income_Tables

Comprehensive Income (Tables)	3 Months Ended
	Oct. 26, 2013
AOCI components [Abstract]	'
Schedule of Accumulated Other Comprehensive Income (Loss) [Table Text Block]	'
	The components of AOCI, net of tax, and the other comprehensive income (loss), excluding noncontrolling interest, for the three months ended October 26, 2013 and October 27, 2012 are summarized as follows (in millions):
		Net Unrealized Gains on Investments				Net Unrealized Gains (Losses) Cash Flow Hedging Instruments				Cumulative Translation Adjustment and Other			Accumulated Other Comprehensive Income
	BALANCE AT JULY 27, 2013	$	379			$	8			$	221		$	608
	Other comprehensive income before reclassifications attributable to Cisco Systems, Inc.	170				38				76			284
	Amounts reclassified out of other comprehensive income	(83		)		(9		)		—			(92		)
	Tax benefit (expense)	(22		)		(3		)		(3		)	(28		)
	BALANCE AT OCTOBER 26, 2013	$	444			$	34			$	294		$	772
		Net Unrealized Gains on Investments				Net Unrealized Gains (Losses) Cash Flow Hedging Instruments				Cumulative Translation Adjustment and Other			Accumulated Other Comprehensive Income
	BALANCE AT JULY 28, 2012	$	409			$	(53	)		$	305		$	661
	Other comprehensive income before reclassifications attributable to Cisco Systems, Inc.	3				66				124			193
	Amounts reclassified out of other comprehensive income	(27		)		5				—			(22		)
	Tax benefit (expense)	11				—				(10		)	1
	BALANCE AT OCTOBER 27, 2012	$	396			$	18			$	419		$	833
Other Comprehensive Income (Loss) [Table Text Block]	'
	The amounts reclassified out of other comprehensive income into the Consolidated Statements of Operations, with line item location, during each period were as follows (in millions):
			Three Months Ended
			October 26,				October 27,
			2013				2012
	Comprehensive Income Components		Income Before Taxes								Line Item in Statements of Operations
	Net unrealized gains on available-for-sale investments
			$	(83	)		$	(27	)		Other income (loss), net
	Net unrealized gains and losses on cash flow hedging instruments
	Foreign currency derivatives		(7		)		4				Operating expenses
	Foreign currency derivatives		(2		)		1				Cost of sales - service
			(9		)		5
	Total amounts reclassified out of other comprehensive income		$	(92	)		$	(22	)

Income_Taxes_Tables

Income Taxes (Tables)	3 Months Ended
	Oct. 26, 2013
Income Tax Disclosure [Abstract]	'
Income tax provision [Table Text Block]	'
	The following table provides details of income taxes (in millions, except percentages):
		Three Months Ended
		October 26,			October 27,
		2013			2012
	Income before provision for income taxes	$	2,540		$	2,631
	Provision for income taxes	$	544		$	539
	Effective tax rate	21.4		%	20.5		%

Segment_Information_And_Major_1

Segment Information And Major Customers (Tables)	3 Months Ended
	Oct. 26, 2013
Segment Reconciliation [Abstract]	'
Reportable Segments	'
	Summarized financial information by segment for the three months ended October 26, 2013 and October 27, 2012, based on the Company’s internal management system and as utilized by the Company’s Chief Operating Decision Maker (“CODM”), is as follows (in millions):
		Three Months Ended
		October 26,			October 27,
		2013			2012
	Revenue:
	Americas	$	7,316		$	7,023
	EMEA	2,933			2,841
	APJC	1,836			2,012
	Total	$	12,085		$	11,876
	Gross margin:
	Americas	4,650			4,468
	EMEA	1,888			1,798
	APJC	1,079			1,176
	Segment total	7,617			7,442
	Unallocated corporate items	(210		)	(203		)
	Total	$	7,407		$	7,239
Segment Reporting Product And Services Net Sales [Text Block]	'
	The following table presents revenue for groups of similar products and services (in millions):
		Three Months Ended
		October 26,			October 27,
		2013			2012
	Revenue:
	Switching	$	3,754		$	3,629
	NGN Routing	2,043			2,055
	Collaboration	1,027			1,020
	Service Provider Video	987			1,149
	Data Center	601			417
	Wireless	540			499
	Security	365			338
	Other	80			190
	Product	9,397			9,297
	Service	2,688			2,579
	Total	$	12,085		$	11,876
Summary of Property And Equipment Information For Geographic Areas [Text Block]	'
	Property and equipment information is based on the physical location of the assets. The following table presents property and equipment information for geographic areas (in millions):
		October 26,			July 27,
		2013			2013
	Property and equipment, net:
	United States	$	2,687		$	2,780
	International	586			542
	Total	$	3,273		$	3,322

Net_Income_Per_Share_Tables

Net Income Per Share (Tables)	3 Months Ended
	Oct. 26, 2013
Earnings Per Share [Abstract]	'
Calculation Of Basic And Diluted Net Income Per Share	'
	The following table presents the calculation of basic and diluted net income per share (in millions, except per-share amounts):
		Three Months Ended
		October 26,		October 27,
		2013		2012
	Net income	$	1,996	$	2,092
	Weighted-average shares - basic	5,378		5,301
	Effect of dilutive potential common shares	52		33
	Weighted-average shares - diluted	5,430		5,334
	Net income per share - basic	$	0.37	$	0.39
	Net income per share - diluted	$	0.37	$	0.39
	Antidilutive employee share-based awards, excluded	174		438

Supplemental_Information_Addit

Supplemental Information Additional Information (Detail) (USD $)	0 Months Ended	3 Months Ended
Share data in Millions, unless otherwise specified	Nov. 13, 2013	Oct. 26, 2013	Jul. 27, 2013
Supplementary Information[Line Items]	'	'	'
Aggregate Authorized Common Stock Repurchase	'	$82,000,000,000	'
Stock Repurchase Program, Authorized Amount	15,000,000,000	82,000,000,000	'
Repurchases of common stock under the repurchase program, shares	'	3,952	3,868
Repurchases of common stock under the repurchase program, value	'	80,906,000,000	78,906,000,000
Common Stock [Member]	'	'	'
Supplementary Information[Line Items]	'	'	'
Repurchases of common stock under the repurchase program, shares	'	3,952	'
Common Stock Including Additional Paid in Capital [Member]	'	'	'
Supplementary Information[Line Items]	'	'	'
Repurchases of common stock under the repurchase program, value	'	18,664,000,000	'
Retained Earnings [Member]	'	'	'
Supplementary Information[Line Items]	'	'	'
Repurchases of common stock under the repurchase program, value	'	62,242,000,000	'
Parent [Member]	'	'	'
Supplementary Information[Line Items]	'	'	'
Repurchases of common stock under the repurchase program, value	'	$80,906,000,000	'

Business_Combinations_Summary_

Business Combinations (Summary Of Allocation Of Total Purchase Consideration) (Detail) (USD $)	3 Months Ended
In Millions, unless otherwise specified	Oct. 26, 2013
Business Acquisition [Line Items]	'
Total purchase consideration	$2,609
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Net	71
Amount, total acquired Intangible Assets	652
Goodwill	1,886
Sourcefire Inc [Member]	'
Business Acquisition [Line Items]	'
Total purchase consideration	2,449
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Net	81
Amount, total acquired Intangible Assets	577
Goodwill	1,791
Compostie Software Inc. [Member]	'
Business Acquisition [Line Items]	'
Total purchase consideration	160
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Net	-10
Amount, total acquired Intangible Assets	75
Goodwill	$95

Business_Combinations_Addition

Business Combinations - Additional Information (Detail) (USD $)	3 Months Ended
In Millions, unless otherwise specified	Oct. 26, 2013
	acquisition
Business Acquisition [Line Items]	'
Number of Businesses Acquired (In numbers)	2
Cash Acquired from Acquisition	$132
Business Combination, Acquisition Related Costs	6
Total purchase consideration	2,609
WhipTail Technologies, Inc.	'
Business Acquisition [Line Items]	'
Total purchase consideration	$400

Goodwill_And_Purchased_Intangi2

Goodwill And Purchased Intangible Assets (Scedule Of Goodwill By Reportable Segments) (Detail) (USD $)	3 Months Ended
In Millions, unless otherwise specified	Oct. 26, 2013
Goodwill [Roll Forward]	'
Balance, beginning	$21,919
Acquisitions	1,886
Other	-1
Balance, ending	23,804
Americas [Member]	'
Goodwill [Roll Forward]	'
Balance, beginning	13,800
Acquisitions	1,012
Other	0
Balance, ending	14,812
EMEA	'
Goodwill [Roll Forward]	'
Balance, beginning	5,037
Acquisitions	575
Other	-1
Balance, ending	5,611
APJC	'
Goodwill [Roll Forward]	'
Balance, beginning	3,082
Acquisitions	299
Other	0
Balance, ending	$3,381

Goodwill_And_Purchased_Intangi3

Goodwill And Purchased Intangible Assets (Schedule Of Intangible Assets Acquired Through Business Combinations) (Detail) (USD $)	3 Months Ended
In Millions, unless otherwise specified	Oct. 26, 2013
Schedule Of Finite Lived And Indefinite Lived Intangible Assets Acquired Through Business Combinations [Line Items]	'
Amount, acquired indefinite lives	$23
Amount, total acquired Intangible Assets	652
Technology [Member]	'
Schedule Of Finite Lived And Indefinite Lived Intangible Assets Acquired Through Business Combinations [Line Items]	'
Amount, acquired finite-lived	460
Customer Relationships [Member]	'
Schedule Of Finite Lived And Indefinite Lived Intangible Assets Acquired Through Business Combinations [Line Items]	'
Amount, acquired finite-lived	143
Other Intangible Assets [Member]	'
Schedule Of Finite Lived And Indefinite Lived Intangible Assets Acquired Through Business Combinations [Line Items]	'
Amount, acquired finite-lived	26
Sourcefire Inc [Member]	'
Schedule Of Finite Lived And Indefinite Lived Intangible Assets Acquired Through Business Combinations [Line Items]	'
Amount, acquired indefinite lives	22
Amount, total acquired Intangible Assets	577
Sourcefire Inc [Member] | Technology [Member]	'
Schedule Of Finite Lived And Indefinite Lived Intangible Assets Acquired Through Business Combinations [Line Items]	'
Weighted-Average Useful Life (in Years)	'7 years
Amount, acquired finite-lived	400
Sourcefire Inc [Member] | Customer Relationships [Member]	'
Schedule Of Finite Lived And Indefinite Lived Intangible Assets Acquired Through Business Combinations [Line Items]	'
Weighted-Average Useful Life (in Years)	'5 years
Amount, acquired finite-lived	129
Sourcefire Inc [Member] | Other Intangible Assets [Member]	'
Schedule Of Finite Lived And Indefinite Lived Intangible Assets Acquired Through Business Combinations [Line Items]	'
Weighted-Average Useful Life (in Years)	'3 years
Amount, acquired finite-lived	26
Compostie Software Inc. [Member]	'
Schedule Of Finite Lived And Indefinite Lived Intangible Assets Acquired Through Business Combinations [Line Items]	'
Amount, acquired indefinite lives	1
Amount, total acquired Intangible Assets	75
Compostie Software Inc. [Member] | Technology [Member]	'
Schedule Of Finite Lived And Indefinite Lived Intangible Assets Acquired Through Business Combinations [Line Items]	'
Weighted-Average Useful Life (in Years)	'6 years
Amount, acquired finite-lived	60
Compostie Software Inc. [Member] | Customer Relationships [Member]	'
Schedule Of Finite Lived And Indefinite Lived Intangible Assets Acquired Through Business Combinations [Line Items]	'
Weighted-Average Useful Life (in Years)	'3 years 10 months 8 days
Amount, acquired finite-lived	14
Compostie Software Inc. [Member] | Other Intangible Assets [Member]	'
Schedule Of Finite Lived And Indefinite Lived Intangible Assets Acquired Through Business Combinations [Line Items]	'
Weighted-Average Useful Life (in Years)	'0 years
Amount, acquired finite-lived	$0

Goodwill_And_Purchased_Intangi4

Goodwill And Purchased Intangible Assets (Schedule Of Purchased Intangible Assets With Finite And Indefinite Lives) (Detail) (USD $)	Oct. 26, 2013	Jul. 27, 2013
In Millions, unless otherwise specified
Business Acquisition [Line Items]	'	'
Finite-Lived Intangible Assets, Gross	$5,787	$5,159
Accumulated Amortization	-2,056	-1,842
Finite-Lived Intangible Assets, Net	3,731	3,317
Gross In Process Research Development With Indefinite Lives	104	86
Gross Purchased Intangibles	5,891	5,245
Total Purchased intangible assets, net	3,835	3,403
Technology [Member]	'	'
Business Acquisition [Line Items]	'	'
Finite-Lived Intangible Assets, Gross	4,034	3,563
Accumulated Amortization	-1,529	-1,366
Finite-Lived Intangible Assets, Net	2,505	2,197
Customer Relationships [Member]	'	'
Business Acquisition [Line Items]	'	'
Finite-Lived Intangible Assets, Gross	1,698	1,566
Accumulated Amortization	-516	-466
Finite-Lived Intangible Assets, Net	1,182	1,100
Finite Lived Intangible Other [Member]	'	'
Business Acquisition [Line Items]	'	'
Finite-Lived Intangible Assets, Gross	55	30
Accumulated Amortization	-11	-10
Finite-Lived Intangible Assets, Net	$44	$20

Goodwill_And_Purchased_Intangi5

Goodwill And Purchased Intangible Assets (Schedule Of Amortization Of Purchased Intangible Assets) (Detail) (USD $)	3 Months Ended
In Millions, unless otherwise specified	Oct. 26, 2013	Oct. 27, 2012
Acquired Finite-Lived Intangible Assets [Line Items]	'	'
Amortization of Purchased Intangible Assets	$65	$122
Cost of Sales [Member]	'	'
Acquired Finite-Lived Intangible Assets [Line Items]	'	'
Amortization of Purchased Intangible Assets	174	143
Operating Expenses [Member]	'	'
Acquired Finite-Lived Intangible Assets [Line Items]	'	'
Amortization of Purchased Intangible Assets	65	122
Cost of Sales and Operating Expenses [Member]	'	'
Acquired Finite-Lived Intangible Assets [Line Items]	'	'
Amortization of Purchased Intangible Assets	$239	$265

Goodwill_And_Purchased_Intangi6

Goodwill And Purchased Intangible Assets (Schedule Of Estimated Future Amortization Expense Of Purchased Intangible Assets) (Detail) (USD $)	Oct. 26, 2013	Jul. 27, 2013
In Millions, unless otherwise specified
Finite-Lived Intangible Assets, Net, Amortization Expense, Fiscal Year Maturity [Abstract]	'	'
2014 (remaining nine months)	$764	'
2015	934	'
2016	704	'
2017	530	'
2018	380	'
Thereafter	419	'
Total Purchased intangible assets, net	$3,731	$3,317

Restructuring_And_Other_Charge2

Restructuring And Other Charges (Schedule Of Activities Related To Restructuring And Other Charges) (Detail) (August Fiscal 2014 Restructuring Plan, USD $)	3 Months Ended
In Millions, unless otherwise specified	Oct. 26, 2013
Restructuring Cost and Reserve [Line Items]	'
Restructuring Charges	$237
Cash Payments	-70
Non-Cash Items	3
Restructuring Reserve	170
Employee Severance	'
Restructuring Cost and Reserve [Line Items]	'
Severance Costs	240
Cash Payments	-70
Restructuring Reserve	170
Other	'
Restructuring Cost and Reserve [Line Items]	'
Other Restructuring Costs	-3
Cash Payments	0
Non-Cash Items	3
Restructuring Reserve	$0

Restructuring_And_Other_Charge3

Restructuring And Other Charges (Additional Information) (Detail) (USD $)	3 Months Ended
In Millions, unless otherwise specified	Oct. 26, 2013	Oct. 27, 2012
August Fiscal 2014 Restructuring Plan	'	'
Restructuring Cost and Reserve [Line Items]	'	'
Expected Number of Positions Eliminated (headcounts)	4,000	'
Restructuring, position eliminated of total positions, percent	5.00%	'
Restructuring and Related Cost, Cost Incurred to Date	$237	'
Restructuring and Related Cost, Expected Cost	550	'
Restructuring Reserve	170	'
Restructuring Charges	237	'
Fiscal 2011 Plans	'	'
Restructuring Cost and Reserve [Line Items]	'	'
Restructuring and Related Cost, Cost Incurred to Date	1,100	'
Restructuring Reserve	22	'
Restructuring Charges	$0	$59

Balance_Sheet_Details_Detail

Balance Sheet Details (Detail) (USD $)	Oct. 26, 2013	Jul. 27, 2013
In Millions, unless otherwise specified
Inventories:	'	'
Raw materials	$80	$105
Work in process	7	24
Distributor inventory and deferred cost of sales	619	572
Manufactured finished goods	464	480
Total finished goods	1,083	1,052
Service-related spares	257	256
Demonstration systems	39	39
Total	1,466	1,476
Property and Equipment, net:	'	'
Land, buildings, and building & leasehold improvements	4,340	4,426
Computer equipment and related software	1,428	1,416
Production, engineering, and other equipment	5,767	5,721
Operating lease assets	326	326
Furniture and fixtures	498	497
Property, plant and equipment, gross	12,359	12,386
Less accumulated depreciation and amortization	-9,086	-9,064
Total	3,273	3,322
Other Assets:	'	'
Deferred tax assets	1,496	1,539
Investments in privately held companies	884	833
Other Assets	760	743
Total	3,140	3,115
Deferred Revenue Arrangement [Line Items]	'	'
Deferred Revenue, Current	9,212	9,262
Deferred Revenue, Noncurrent	3,995	4,161
Service [Member]	'	'
Deferred Revenue Arrangement [Line Items]	'	'
Deferred Revenue	8,896	9,403
Unrecognized revenue on product shipments and other [Member]	'	'
Deferred Revenue Arrangement [Line Items]	'	'
Deferred Revenue	3,628	3,340
Cash receipts related to revenue from two-tier distributors [Member]	'	'
Deferred Revenue Arrangement [Line Items]	'	'
Deferred Revenue	683	680
Product [Member]	'	'
Deferred Revenue Arrangement [Line Items]	'	'
Deferred Revenue	4,311	4,020
Total deferred revenue [Member]	'	'
Deferred Revenue Arrangement [Line Items]	'	'
Deferred Revenue	$13,207	$13,423

Balance_Sheet_Details_Parenthe

Balance Sheet Details (Parenthetical) (Detail) (USD $)	Oct. 26, 2013	Jul. 27, 2013
In Millions, unless otherwise specified
Disclosure Balance Sheet Details [Abstract]	'	'
Accumulated Depreciation for Operating Lease Assets	$207	$203

Financing_Receivables_And_Guar2

Financing Receivables And Guarantees (Schedule Of Financing Receivables) (Detail) (USD $)	Oct. 26, 2013	Jul. 27, 2013	Oct. 27, 2012	Jul. 28, 2012
In Millions, unless otherwise specified
Accounts, Notes, Loans and Financing Receivable [Line Items]	'	'	'	'
Gross Financing Receivable before Unearned and Credit Loss Allowance	$8,639	$8,565	'	'
Unearned income	-264	-273	'	'
Allowance for Credit Losses	-350	-344	-374	-380
Total, net	8,025	7,948	'	'
Current	4,132	4,037	'	'
Noncurrent	3,893	3,911	'	'
Lease Receivables	'	'	'	'
Accounts, Notes, Loans and Financing Receivable [Line Items]	'	'	'	'
Gross Financing Receivable before Unearned and Credit Loss Allowance	3,813	3,780	'	'
Unearned income	-264	-273	'	'
Allowance for Credit Losses	-237	-238	'	'
Total, net	3,312	3,269	'	'
Current	1,463	1,418	'	'
Noncurrent	1,849	1,851	'	'
Loan Receivables	'	'	'	'
Accounts, Notes, Loans and Financing Receivable [Line Items]	'	'	'	'
Gross Financing Receivable before Unearned and Credit Loss Allowance	1,808	1,649	'	'
Unearned income	0	0	'	'
Allowance for Credit Losses	-93	-86	'	'
Total, net	1,715	1,563	'	'
Current	951	898	'	'
Noncurrent	764	665	'	'
Financed Service Contracts And Other	'	'	'	'
Accounts, Notes, Loans and Financing Receivable [Line Items]	'	'	'	'
Gross Financing Receivable before Unearned and Credit Loss Allowance	3,018	3,136	'	'
Unearned income	0	0	'	'
Allowance for Credit Losses	-20	-20	'	'
Total, net	2,998	3,116	'	'
Current	1,718	1,721	'	'
Noncurrent	$1,280	$1,395	'	'

Financing_Receivables_And_Guar3

Financing Receivables And Guarantees (Contractual Maturities Of The Gross Lease Receivables) (Detail) (USD $)	Oct. 26, 2013
In Millions, unless otherwise specified
Financing Receivables And Guarantees [Abstract]	'
2014 (remaining nine months)	$1,338
2015	1,251
2016	746
2017	364
2018	109
Thereafter	5
Total	$3,813

Financing_Receivables_And_Guar4

Financing Receivables And Guarantees (Schedule Of Financing Receivables Categorized By Internal Credit Risk Rating) (Detail) (USD $)	Oct. 26, 2013	Jul. 27, 2013	Oct. 27, 2012
In Millions, unless otherwise specified
Financing Receivables And Guarantees [Line Items]	'	'	'
Gross Financing Receivable, Net of Unearned	$8,375	$8,292	$7,795
Rating One To Four [Member]	'	'	'
Financing Receivables And Guarantees [Line Items]	'	'	'
Gross Financing Receivable, Net of Unearned	4,468	4,399	'
Rating Five To Six [Member]	'	'	'
Financing Receivables And Guarantees [Line Items]	'	'	'
Gross Financing Receivable, Net of Unearned	3,385	3,400	'
Rating Seven And Higher [Member]	'	'	'
Financing Receivables And Guarantees [Line Items]	'	'	'
Gross Financing Receivable, Net of Unearned	270	242	'
Total Internal Credit Risk Rating [Member]	'	'	'
Financing Receivables And Guarantees [Line Items]	'	'	'
Gross Financing Receivable, Net of Unearned	8,123	8,041	'
Residual Value [Member]	'	'	'
Financing Receivables And Guarantees [Line Items]	'	'	'
Gross Financing Receivable, Net of Unearned	252	251	'
Lease Receivables	'	'	'
Financing Receivables And Guarantees [Line Items]	'	'	'
Gross Financing Receivable, Net of Unearned	3,549	3,507	3,340
Lease Receivables | Rating One To Four [Member]	'	'	'
Financing Receivables And Guarantees [Line Items]	'	'	'
Gross Financing Receivable, Net of Unearned	1,695	1,681	'
Lease Receivables | Rating Five To Six [Member]	'	'	'
Financing Receivables And Guarantees [Line Items]	'	'	'
Gross Financing Receivable, Net of Unearned	1,498	1,482	'
Lease Receivables | Rating Seven And Higher [Member]	'	'	'
Financing Receivables And Guarantees [Line Items]	'	'	'
Gross Financing Receivable, Net of Unearned	104	93	'
Lease Receivables | Total Internal Credit Risk Rating [Member]	'	'	'
Financing Receivables And Guarantees [Line Items]	'	'	'
Gross Financing Receivable, Net of Unearned	3,297	3,256	'
Lease Receivables | Residual Value [Member]	'	'	'
Financing Receivables And Guarantees [Line Items]	'	'	'
Gross Financing Receivable, Net of Unearned	252	251	'
Loan Receivables	'	'	'
Financing Receivables And Guarantees [Line Items]	'	'	'
Gross Financing Receivable, Net of Unearned	1,808	1,649	1,816
Loan Receivables | Rating One To Four [Member]	'	'	'
Financing Receivables And Guarantees [Line Items]	'	'	'
Gross Financing Receivable, Net of Unearned	981	842	'
Loan Receivables | Rating Five To Six [Member]	'	'	'
Financing Receivables And Guarantees [Line Items]	'	'	'
Gross Financing Receivable, Net of Unearned	777	777	'
Loan Receivables | Rating Seven And Higher [Member]	'	'	'
Financing Receivables And Guarantees [Line Items]	'	'	'
Gross Financing Receivable, Net of Unearned	50	30	'
Loan Receivables | Total Internal Credit Risk Rating [Member]	'	'	'
Financing Receivables And Guarantees [Line Items]	'	'	'
Gross Financing Receivable, Net of Unearned	1,808	1,649	'
Financed Service Contracts And Other	'	'	'
Financing Receivables And Guarantees [Line Items]	'	'	'
Gross Financing Receivable, Net of Unearned	3,018	3,136	2,639
Financed Service Contracts And Other | Rating One To Four [Member]	'	'	'
Financing Receivables And Guarantees [Line Items]	'	'	'
Gross Financing Receivable, Net of Unearned	1,792	1,876	'
Financed Service Contracts And Other | Rating Five To Six [Member]	'	'	'
Financing Receivables And Guarantees [Line Items]	'	'	'
Gross Financing Receivable, Net of Unearned	1,110	1,141	'
Financed Service Contracts And Other | Rating Seven And Higher [Member]	'	'	'
Financing Receivables And Guarantees [Line Items]	'	'	'
Gross Financing Receivable, Net of Unearned	116	119	'
Financed Service Contracts And Other | Total Internal Credit Risk Rating [Member]	'	'	'
Financing Receivables And Guarantees [Line Items]	'	'	'
Gross Financing Receivable, Net of Unearned	$3,018	$3,136	'

Financing_Receivables_And_Guar5

Financing Receivables And Guarantees (Schedule Of Financing Receivables By Portfolio Segment Aging Analysis) (Detail) (USD $)	Oct. 26, 2013	Jul. 27, 2013	Oct. 27, 2012
In Millions, unless otherwise specified
Financing Receivable, Recorded Investment, Past Due [Line Items]	'	'	'
31 to 60 Days Past Due	$248	$166	'
61 to 90 Days Past Due	103	99	'
Greater Than 90 Days Past Due	441	527	'
Total Past Due	792	792	'
Class Of Financing Receivable Current	7,583	7,500	'
Gross Financing Receivable, Net of Unearned	8,375	8,292	7,795
Non-accrual financing receivables	47	56	'
Impaired Financing Receivables	52	42	'
Lease Receivables	'	'	'
Financing Receivable, Recorded Investment, Past Due [Line Items]	'	'	'
31 to 60 Days Past Due	135	85	'
61 to 90 Days Past Due	60	48	'
Greater Than 90 Days Past Due	148	124	'
Total Past Due	343	257	'
Class Of Financing Receivable Current	3,206	3,250	'
Gross Financing Receivable, Net of Unearned	3,549	3,507	3,340
Non-accrual financing receivables	28	27	'
Impaired Financing Receivables	24	22	'
Loan Receivables	'	'	'
Financing Receivable, Recorded Investment, Past Due [Line Items]	'	'	'
31 to 60 Days Past Due	28	6	'
61 to 90 Days Past Due	2	3	'
Greater Than 90 Days Past Due	16	11	'
Total Past Due	46	20	'
Class Of Financing Receivable Current	1,762	1,629	'
Gross Financing Receivable, Net of Unearned	1,808	1,649	1,816
Non-accrual financing receivables	7	11	'
Impaired Financing Receivables	17	9	'
Financed Service Contracts And Other	'	'	'
Financing Receivable, Recorded Investment, Past Due [Line Items]	'	'	'
31 to 60 Days Past Due	85	75	'
61 to 90 Days Past Due	41	48	'
Greater Than 90 Days Past Due	277	392	'
Total Past Due	403	515	'
Class Of Financing Receivable Current	2,615	2,621	'
Gross Financing Receivable, Net of Unearned	3,018	3,136	2,639
Non-accrual financing receivables	12	18	'
Impaired Financing Receivables	$11	$11	'

Financing_Receivables_And_Guar6

Financing Receivables And Guarantees (Allowance For Credit Loss And Related Financing Receivables) (Detail) (USD $)	3 Months Ended
In Millions, unless otherwise specified	Oct. 26, 2013	Oct. 27, 2012	Jul. 27, 2013
Financing Receivable, Allowance for Credit losses [Line Items]	'	'	'
Financing Receivable, Allowance for Credit Losses	$344	$380	'
Provisions	3	-11	'
Foreign exchange and other	3	5	'
Financing Receivable, Allowance for Credit Losses	350	374	'
Gross Financing Receivable, Net of Unearned	8,375	7,795	8,292
Lease Receivables	'	'	'
Financing Receivable, Allowance for Credit losses [Line Items]	'	'	'
Financing Receivable, Allowance for Credit Losses	238	247	'
Provisions	-3	-2	'
Foreign exchange and other	2	3	'
Financing Receivable, Allowance for Credit Losses	237	248	'
Gross Financing Receivable, Net of Unearned	3,549	3,340	3,507
Loan Receivables	'	'	'
Financing Receivable, Allowance for Credit losses [Line Items]	'	'	'
Financing Receivable, Allowance for Credit Losses	86	122	'
Provisions	6	-10	'
Foreign exchange and other	1	2	'
Financing Receivable, Allowance for Credit Losses	93	114	'
Gross Financing Receivable, Net of Unearned	1,808	1,816	1,649
Financed Service Contracts And Other	'	'	'
Financing Receivable, Allowance for Credit losses [Line Items]	'	'	'
Financing Receivable, Allowance for Credit Losses	20	11	'
Provisions	0	1	'
Foreign exchange and other	0	0	'
Financing Receivable, Allowance for Credit Losses	20	12	'
Gross Financing Receivable, Net of Unearned	$3,018	$2,639	$3,136

Financing_Receivables_And_Guar7

Financing Receivables And Guarantees (Schedule Of Financing Guarantees Outstanding) (Detail) (USD $)	Oct. 26, 2013	Jul. 27, 2013
In Millions, unless otherwise specified
Financing Guarantee Summary [Line Items]	'	'
Maximum potential future payments relating to financing guarantees	$706	$675
Deferred revenue associated with financing guarantees	-421	-416
Maximum potential future payments relating to financing guarantees, net of associated deferred revenue	285	259
Channel Partner	'	'
Financing Guarantee Summary [Line Items]	'	'
Maximum potential future payments relating to financing guarantees	483	438
Deferred revenue associated with financing guarantees	-232	-225
End User	'	'
Financing Guarantee Summary [Line Items]	'	'
Maximum potential future payments relating to financing guarantees	223	237
Deferred revenue associated with financing guarantees	($189)	($191)

Financing_Receivables_And_Guar8

Financing Receivables And Guarantees (Additional Information) (Detail) (USD $)	3 Months Ended
	Oct. 26, 2013	Oct. 27, 2012	Jul. 27, 2013
	D
Financing Receivables And Guarantees [Line Items]	'	'	'
Average term of lease arrangements, years	'4 years	'	'
Term of Loan Receivable Arrangement	'3 years	'	'
Financing receivable, allowance for credit loss and deferred revenue	$2,289,000,000	'	$2,453,000,000
Gross Financing Receivable, Net of Unearned	8,375,000,000	7,795,000,000	8,292,000,000
Threshold period for past due receivables, days	'31 days	'	'
Unbilled Or Current In Greater Than Ninety Days Past Due	320,000,000	'	406,000,000
Financing Receivable, Recorded Investment, 90 Days Past Due and Still Accruing	92,000,000	'	87,000,000
Risk rating for receivables deemed to be impaired, minimum	8	'	'
Channel partners revolving short-term financing payment term, minimum (days)	60	'	'
Channel partners revolving short-term financing payment term, maximum (days)	90	'	'
Volume of channel partner financing	6,300,000,000	5,600,000,000	'
Balance of the channel partner financing subject to guarantees	1,400,000,000	'	1,400,000,000
End User Lease And Loan Term Maximum	'3 years	'	'
Financing provided by third parties for leases and loans on which the Company has provided guarantees	25,000,000	44,000,000	'
Minimum [Member]	'	'	'
Financing Receivables And Guarantees [Line Items]	'	'	'
Financing Receivable, Credit Quality, Additional Information	'1	'	'
Maximum [Member]	'	'	'
Financing Receivables And Guarantees [Line Items]	'	'	'
Financing Receivable, Credit Quality, Additional Information	'10	'	'
Financed Service Contracts And Other	'	'	'
Financing Receivables And Guarantees [Line Items]	'	'	'
Deferred Service Revenue related to financed service contracts and other	$1,881,000,000	'	$2,036,000,000
Financed Service Contracts And Other | Minimum [Member]	'	'	'
Financing Receivables And Guarantees [Line Items]	'	'	'
Services revenue recognized ratably, in years	'1 year	'	'
Financed Service Contracts And Other | Maximum [Member]	'	'	'
Financing Receivables And Guarantees [Line Items]	'	'	'
Services revenue recognized ratably, in years	'3 years	'	'
Pass [Member] | Minimum [Member]	'	'	'
Financing Receivables And Guarantees [Line Items]	'	'	'
Financing Receivable, Credit Quality, Additional Information	'1	'	'
Pass [Member] | Maximum [Member]	'	'	'
Financing Receivables And Guarantees [Line Items]	'	'	'
Financing Receivable, Credit Quality, Additional Information	'4	'	'
Special Mention [Member] | Minimum [Member]	'	'	'
Financing Receivables And Guarantees [Line Items]	'	'	'
Financing Receivable, Credit Quality, Additional Information	'5	'	'
Special Mention [Member] | Maximum [Member]	'	'	'
Financing Receivables And Guarantees [Line Items]	'	'	'
Financing Receivable, Credit Quality, Additional Information	'6	'	'
Substandard [Member] | Minimum [Member]	'	'	'
Financing Receivables And Guarantees [Line Items]	'	'	'
Financing Receivable, Credit Quality, Additional Information	'7	'	'

Investments_Summary_Of_Availab

Investments (Summary Of Available-For-Sale Investments) (Detail) (USD $)	3 Months Ended	12 Months Ended
In Millions, unless otherwise specified	Oct. 26, 2013	Jul. 27, 2013
Schedule of Investments [Line Items]	'	'
Amortized Cost	$42,154	$41,930
Gross Unrealized Gains	819	825
Gross Unrealized Losses	-26	-70
Fair Value	42,947	42,685
Publicly Traded Equity Securities [Member]	'	'
Schedule of Investments [Line Items]	'	'
Amortized Cost	1,820	2,063
Gross Unrealized Gains	696	738
Gross Unrealized Losses	-2	-4
Fair Value	2,514	2,797
Fixed Income Investments [Member]	'	'
Schedule of Investments [Line Items]	'	'
Amortized Cost	40,334	39,867
Gross Unrealized Gains	123	87
Gross Unrealized Losses	-24	-66
Fair Value	40,433	39,888
Fixed Income Investments [Member] | US Government Securities[Member]	'	'
Schedule of Investments [Line Items]	'	'
Amortized Cost	28,603	27,814
Gross Unrealized Gains	37	22
Gross Unrealized Losses	-2	-13
Fair Value	28,638	27,823
Fixed Income Investments [Member] | US Government Agencies Securities [Member]	'	'
Schedule of Investments [Line Items]	'	'
Amortized Cost	2,394	3,083
Gross Unrealized Gains	5	7
Gross Unrealized Losses	0	-1
Fair Value	2,399	3,089
Fixed Income Investments [Member] | Non-US Government and Agency Securities [Member]	'	'
Schedule of Investments [Line Items]	'	'
Amortized Cost	907	1,094
Gross Unrealized Gains	3	3
Gross Unrealized Losses	-1	-2
Fair Value	909	1,095
Fixed Income Investments [Member] | Corporate Debt Securities [Member]	'	'
Schedule of Investments [Line Items]	'	'
Amortized Cost	7,974	7,876
Gross Unrealized Gains	73	55
Gross Unrealized Losses	-21	-50
Fair Value	8,026	7,881
Fixed Income Investments [Member] | U.S. agency mortgage-backed Securities	'	'
Schedule of Investments [Line Items]	'	'
Amortized Cost	456	'
Gross Unrealized Gains	5	'
Gross Unrealized Losses	0	'
Fair Value	$461	'

Investments_Investments_Gross_

Investments Investments (Gross Realized Gains And Gross Realized Losses Related To Available-For-Sale Investments) (Detail) (USD $)	3 Months Ended
In Millions, unless otherwise specified	Oct. 26, 2013	Oct. 27, 2012
Available-for-sale Securities, Gross Realized Gain (Loss) [Abstract]	'	'
Gross Realized Gains	$95	$63
Gross Realized Losses	-12	-36
Total	$83	$27

Investments_Realized_Net_Gains

Investments (Realized Net Gains (Losses) Related To Available-For-Sale Investments) (Detail) (USD $)	3 Months Ended
In Millions, unless otherwise specified	Oct. 26, 2013	Oct. 27, 2012
Net gains (losses) on investments	$83	$27
Publicly Traded Equity Securities [Member]	'	'
Net gains (losses) on investments	75	10
Fixed Income Investments [Member]	'	'
Net gains (losses) on investments	$8	$17

Investments_AvailableForSale_I

Investments (Available-For-Sale Investments With Gross Unrealized Losses) (Detail) (USD $)	3 Months Ended	12 Months Ended
In Millions, unless otherwise specified	Oct. 26, 2013	Jul. 27, 2013
Schedule of Investments [Line Items]	'	'
Available-for-sale Securities with Unrealized Losses Less than 12 Months, Fair Value	$6,146	$12,573
Gross Unrealized Losses, Less than 12 Months	-26	-70
Available-for-sale Securities with Unrealized Losses 12 Months or Longer, Fair Value	23	4
Gross Unrealized Losses, 12 Months or Longer	0	0
Available-for-sale Investments with Unrealized Losses, Fair Value	6,169	12,577
Total Gross Unrealized Losses	-26	-70
Publicly Traded Equity Securities [Member]	'	'
Schedule of Investments [Line Items]	'	'
Available-for-sale Securities with Unrealized Losses Less than 12 Months, Fair Value	45	278
Gross Unrealized Losses, Less than 12 Months	-2	-4
Available-for-sale Securities with Unrealized Losses 12 Months or Longer, Fair Value	0	0
Gross Unrealized Losses, 12 Months or Longer	0	0
Available-for-sale Investments with Unrealized Losses, Fair Value	45	278
Total Gross Unrealized Losses	-2	-4
Total Fixed Income Securities [Member]	'	'
Schedule of Investments [Line Items]	'	'
Available-for-sale Securities with Unrealized Losses Less than 12 Months, Fair Value	6,101	12,295
Gross Unrealized Losses, Less than 12 Months	-24	-66
Available-for-sale Securities with Unrealized Losses 12 Months or Longer, Fair Value	23	4
Gross Unrealized Losses, 12 Months or Longer	0	0
Available-for-sale Investments with Unrealized Losses, Fair Value	6,124	12,299
Total Gross Unrealized Losses	-24	-66
Total Fixed Income Securities [Member] | US Government Securities[Member]	'	'
Schedule of Investments [Line Items]	'	'
Available-for-sale Securities with Unrealized Losses Less than 12 Months, Fair Value	3,303	7,865
Gross Unrealized Losses, Less than 12 Months	-2	-13
Available-for-sale Securities with Unrealized Losses 12 Months or Longer, Fair Value	8	0
Gross Unrealized Losses, 12 Months or Longer	0	0
Available-for-sale Investments with Unrealized Losses, Fair Value	3,311	7,865
Total Gross Unrealized Losses	-2	-13
Total Fixed Income Securities [Member] | US Government Agencies Securities [Member]	'	'
Schedule of Investments [Line Items]	'	'
Available-for-sale Securities with Unrealized Losses Less than 12 Months, Fair Value	201	294
Gross Unrealized Losses, Less than 12 Months	0	-1
Available-for-sale Securities with Unrealized Losses 12 Months or Longer, Fair Value	0	0
Gross Unrealized Losses, 12 Months or Longer	0	0
Available-for-sale Investments with Unrealized Losses, Fair Value	201	294
Total Gross Unrealized Losses	0	-1
Total Fixed Income Securities [Member] | Non-US Government and Agency Securities [Member]	'	'
Schedule of Investments [Line Items]	'	'
Available-for-sale Securities with Unrealized Losses Less than 12 Months, Fair Value	208	432
Gross Unrealized Losses, Less than 12 Months	-1	-2
Available-for-sale Securities with Unrealized Losses 12 Months or Longer, Fair Value	2	0
Gross Unrealized Losses, 12 Months or Longer	0	0
Available-for-sale Investments with Unrealized Losses, Fair Value	210	432
Total Gross Unrealized Losses	-1	-2
Total Fixed Income Securities [Member] | Corporate Debt Securities [Member]	'	'
Schedule of Investments [Line Items]	'	'
Available-for-sale Securities with Unrealized Losses Less than 12 Months, Fair Value	2,357	3,704
Gross Unrealized Losses, Less than 12 Months	-21	-50
Available-for-sale Securities with Unrealized Losses 12 Months or Longer, Fair Value	13	4
Gross Unrealized Losses, 12 Months or Longer	0	0
Available-for-sale Investments with Unrealized Losses, Fair Value	2,370	3,708
Total Gross Unrealized Losses	-21	-50
Total Fixed Income Securities [Member] | U.S. agency mortgage-backed Securities	'	'
Schedule of Investments [Line Items]	'	'
Available-for-sale Securities with Unrealized Losses Less than 12 Months, Fair Value	32	'
Gross Unrealized Losses, Less than 12 Months	0	'
Available-for-sale Securities with Unrealized Losses 12 Months or Longer, Fair Value	0	'
Gross Unrealized Losses, 12 Months or Longer	0	'
Available-for-sale Investments with Unrealized Losses, Fair Value	32	'
Total Gross Unrealized Losses	$0	'

Investments_Maturities_Of_Fixe

Investments (Maturities Of Fixed Income Securities) (Detail) (USD $)	Oct. 26, 2013
In Millions, unless otherwise specified
Schedule of Investments [Line Items]	'
Fixed Income Securities, Amortized Cost	$40,334
Fixed Income Securities, Fair Value	40,433
Less than 1 year [Member]	'
Schedule of Investments [Line Items]	'
Fixed Income Securities, Amortized Cost	15,286
Fixed Income Securities, Fair Value	15,297
Fixed Income Securities Matures Between One And Two Years [Member]	'
Schedule of Investments [Line Items]	'
Fixed Income Securities, Amortized Cost	12,310
Fixed Income Securities, Fair Value	12,346
Fixed Income Securities Matures Between Two And Five Years [Member]	'
Schedule of Investments [Line Items]	'
Fixed Income Securities, Amortized Cost	12,160
Fixed Income Securities, Fair Value	12,204
Fixed Income Securities Matures Beyond Five Years [Member]	'
Schedule of Investments [Line Items]	'
Fixed Income Securities, Amortized Cost	578
Fixed Income Securities, Fair Value	$586

Investments_Additional_Informa

Investments - Additional Information (Detail) (USD $)	3 Months Ended
	Oct. 26, 2013	Oct. 27, 2012	Jul. 27, 2013
Schedule of Available-for-sale Securities [Line Items]	'	'	'
Average Balance Of Securities Lending	$600,000,000	$800,000,000	'
Minimum market value percentage of loaned securities, required collateral	102.00%	'	'
Secured lending transactions outstanding	0	'	0
Fixed Income Securities [Member]	'	'	'
Schedule of Available-for-sale Securities [Line Items]	'	'	'
Other than Temporary Impairment Losses, Investments, Portion Recognized in Earnings, Net, Available-for-sale Securities	0	'	'
Equity Securities [Member]	'	'	'
Schedule of Available-for-sale Securities [Line Items]	'	'	'
Other than Temporary Impairment Losses, Investments, Available-for-sale Securities	$0	'	'

Fair_Value_Assets_And_Liabilit

Fair Value (Assets And Liabilities Measured At Fair Value On A Recurring Basis) (Detail) (USD $)	Oct. 26, 2013	Jul. 27, 2013
In Millions, unless otherwise specified
Assets at Fair Value, Recurring	$46,316	$48,912
Cash Equivalents [Member] | Money Market Funds [Member]	'	'
Assets at Fair Value, Recurring	3,145	6,045
Available-for-sale Securities [Member] | US Government Securities[Member]	'	'
Assets at Fair Value, Recurring	28,638	27,823
Available-for-sale Securities [Member] | US Government Agencies Securities [Member]	'	'
Assets at Fair Value, Recurring	2,399	3,089
Available-for-sale Securities [Member] | Non-US Government and Agency Securities [Member]	'	'
Assets at Fair Value, Recurring	909	1,095
Available-for-sale Securities [Member] | Corporate Debt Securities [Member]	'	'
Assets at Fair Value, Recurring	8,026	7,881
Available-for-sale Securities [Member] | U.S. agency mortgage-backed Securities	'	'
Assets at Fair Value, Recurring	461	'
Available-for-sale Securities [Member] | Equity Securities [Member]	'	'
Assets at Fair Value, Recurring	2,514	2,797
Derivative Assets [Member]	'	'
Assets at Fair Value, Recurring	224	182
Derivative Liabilities [Member]	'	'
Liabilities at Fair Value, Recurring	145	171
Fair Value, Inputs, Level 1 [Member]	'	'
Assets at Fair Value, Recurring	5,659	8,842
Fair Value, Inputs, Level 1 [Member] | Money Market Funds [Member]	'	'
Assets at Fair Value, Recurring	3,145	6,045
Fair Value, Inputs, Level 1 [Member] | Equity Securities [Member]	'	'
Assets at Fair Value, Recurring	2,514	2,797
Fair Value, Inputs, Level 2 [Member]	'	'
Assets at Fair Value, Recurring	40,657	40,070
Fair Value, Inputs, Level 2 [Member] | US Government Securities[Member]	'	'
Assets at Fair Value, Recurring	28,638	27,823
Fair Value, Inputs, Level 2 [Member] | US Government Agencies Securities [Member]	'	'
Assets at Fair Value, Recurring	2,399	3,089
Fair Value, Inputs, Level 2 [Member] | Non-US Government and Agency Securities [Member]	'	'
Assets at Fair Value, Recurring	909	1,095
Fair Value, Inputs, Level 2 [Member] | Corporate Debt Securities [Member]	'	'
Assets at Fair Value, Recurring	8,026	7,881
Fair Value, Inputs, Level 2 [Member] | U.S. agency mortgage-backed Securities	'	'
Assets at Fair Value, Recurring	461	'
Fair Value, Inputs, Level 2 [Member] | Derivative Assets [Member]	'	'
Assets at Fair Value, Recurring	224	182
Fair Value, Inputs, Level 2 [Member] | Derivative Liabilities [Member]	'	'
Liabilities at Fair Value, Recurring	$145	$171

Fair_Value_Fair_Value_On_A_Non

Fair Value (Fair Value On A Nonrecurring Basis) (Detail) (Fair Value, Measurements, Nonrecurring, Fair Value, Inputs, Level 3 [Member], Investments In Privately Held Companies, USD $)	3 Months Ended
In Millions, unless otherwise specified	Oct. 26, 2013	Oct. 27, 2012
Gains or Losses Included In Other Income (Loss), Net	'	'
Fair Value, Assets and Liabilities Measured on Nonrecurring Basis [Line Items]	'	'
Gains (Losses) for the Period	($1)	($10)
Net Carrying Value	'	'
Fair Value, Assets and Liabilities Measured on Nonrecurring Basis [Line Items]	'	'
Investment in privately held companies	$0	$42

Fair_Value_Additional_Informat

Fair Value - Additional Information (Detail) (USD $)	Oct. 26, 2013	Jul. 27, 2013
Other Fair Value Disclosures [Line Items]	'	'
Carrying Value, Cost Method Investments	$238,000,000	$242,000,000
Long-term Debt, carrying value	16,216,000,000	16,201,000,000
Fair Value, Inputs, Level 3 [Member]	'	'
Other Fair Value Disclosures [Line Items]	'	'
Loan Receivables, Financed Service Contracts And Others, Carrying Value	2,000,000,000	2,100,000,000
Fair Value, Inputs, Level 2 [Member]	'	'
Other Fair Value Disclosures [Line Items]	'	'
Long-term Debt, Fair Value	17,600,000,000	17,600,000,000
Long-term Debt, carrying value	$16,200,000,000	$16,200,000,000

Borrowings_ShortTerm_Debt_Deta

Borrowings (Short-Term Debt) (Detail) (USD $)	Oct. 26, 2013	Jul. 27, 2013
In Millions, unless otherwise specified
Short-term Debt [Line Items]	'	'
Debt, Current	$3,279	$3,283
Senior Notes [Member]	'	'
Short-term Debt [Line Items]	'	'
Debt, Current	3,269	3,273
Short-term debt, weighted-average interest rate	0.61%	0.63%
Short-term Debt [Member]	'	'
Short-term Debt [Line Items]	'	'
Debt, Current	$10	$10
Short-term debt, weighted-average interest rate	2.52%	2.52%

Borrowings_Schedule_Of_LongTer

Borrowings (Schedule Of Long-Term Debt) (Detail) (USD $)	Oct. 26, 2013	Jul. 27, 2013
In Millions, unless otherwise specified
Debt Instrument [Line Items]	'	'
Senior notes and other	$16,023	$16,021
Unaccreted discount	-63	-65
Hedge accounting fair value adjustments	256	245
Long-term Debt (Current & NonCurrent)	16,216	16,201
Less: Current portion of long-term debt	-3,269	-3,273
Total long-term debt	12,947	12,928
Floating-Rate Notes, Due 2014	'	'
Debt Instrument [Line Items]	'	'
Senior notes	1,250	1,250
Effective rate	0.61%	0.62%
1.625% Fixed-Rate Notes, Due 2014	'	'
Debt Instrument [Line Items]	'	'
Senior notes	2,000	2,000
Debt Instrument, Interest Rate, Stated Percentage	1.63%	'
Effective rate	0.62%	0.64%
2.90% Fixed-Rate Notes, Due 2014	'	'
Debt Instrument [Line Items]	'	'
Senior notes	500	500
Debt Instrument, Interest Rate, Stated Percentage	2.90%	'
Effective rate	3.11%	3.11%
5.50% Fixed-Rate Notes, Due 2016	'	'
Debt Instrument [Line Items]	'	'
Senior notes	3,000	3,000
Debt Instrument, Interest Rate, Stated Percentage	5.50%	'
Effective rate	3.06%	3.07%
3.15% Fixed-Rate Notes, Due 2017	'	'
Debt Instrument [Line Items]	'	'
Senior notes	750	750
Debt Instrument, Interest Rate, Stated Percentage	3.15%	'
Effective rate	0.82%	0.84%
4.95% Fixed-Rate Notes, Due 2019	'	'
Debt Instrument [Line Items]	'	'
Senior notes	2,000	2,000
Debt Instrument, Interest Rate, Stated Percentage	4.95%	'
Effective rate	4.69%	4.70%
4.45% Fixed-Rate Notes, Due 2020	'	'
Debt Instrument [Line Items]	'	'
Senior notes	2,500	2,500
Debt Instrument, Interest Rate, Stated Percentage	4.45%	'
Effective rate	3.73%	4.15%
5.90% Fixed-Rate Notes, Due 2039	'	'
Debt Instrument [Line Items]	'	'
Senior notes	2,000	2,000
Debt Instrument, Interest Rate, Stated Percentage	5.90%	'
Effective rate	6.11%	6.11%
5.50% Fixed-Rate Notes, Due 2040	'	'
Debt Instrument [Line Items]	'	'
Senior notes	2,000	2,000
Debt Instrument, Interest Rate, Stated Percentage	5.50%	'
Effective rate	5.67%	5.67%
Other Long-Term Debt	'	'
Debt Instrument [Line Items]	'	'
Other Long-term Debt	$23	$21
Effective rate	1.32%	1.46%

Borrowings_Schedule_Of_Princip

Borrowings (Schedule Of Principal Payments For Long-Term Debt ) (Detail) (USD $)	Oct. 26, 2013	Jul. 27, 2013
In Millions, unless otherwise specified
Debt Disclosure [Abstract]	'	'
2014 (remaining nine months)	$3,264	'
2015	505	'
2016	3,003	'
2017	751	'
2018	0	'
Thereafter	8,500	'
Senior notes and other	$16,023	$16,021

Borrowings_Additional_Informat

Borrowings - Additional Information (Detail) (USD $)	3 Months Ended
	Oct. 26, 2013	Jul. 27, 2013
Debt Instrument [Line Items]	'	'
ST debt financing program- Commercial paper notes	$3,000,000,000	'
Commercial Paper Outstanding	0	0
Notional amount of derivatives	12,800,000,000	12,992,000,000
Unsecured Debt [Member]	'	'
Debt Instrument [Line Items]	'	'
Unsecured Revolving Credit Facility	3,000,000,000	'
Unsecured revolving credit facility maturity date	17-Feb-17	'
Line of Credit Facility, Interest Rate Description	'either (i) the higher of the Federal Funds rate plus 0.50%, Bank of America's bprime rateb as announced from time to time, or one-month LIBOR plus 1.00%, or (ii) LIBOR plus a margin that is based on the Company's senior debt credit ratings	'
Interest Rate- Federal Funds rate plus 0.5%	0.50%	'
Interest Rate- One-month LIBOR plus 1.00%	1.00%	'
Available increases under the credit facility	2,000,000,000	'
Additional unsecured revolving credit facility maturity date	17-Feb-19	'
Designated as Hedging Instrument [Member] | Interest Rate Derivatives [Member]	'	'
Debt Instrument [Line Items]	'	'
Notional amount of derivatives	$5,750,000,000	$5,250,000,000

Derivative_Instruments_Derivat

Derivative Instruments (Derivatives Recorded At Fair Value) (Details) (USD $)	Oct. 26, 2013	Jul. 27, 2013
In Millions, unless otherwise specified
Derivative [Line Items]	'	'
Derivative assets	$224	$182
Derivative liabilities	145	171
Designated as Hedging Instrument [Member]	'	'
Derivative [Line Items]	'	'
Derivative assets	221	180
Derivative liabilities	132	164
Designated as Hedging Instrument [Member] | Foreign Exchange Contract | Other Current Assets [Member]	'	'
Derivative [Line Items]	'	'
Derivative assets	57	33
Designated as Hedging Instrument [Member] | Foreign Exchange Contract | Other Current Liabilities [Member]	'	'
Derivative [Line Items]	'	'
Derivative liabilities	10	7
Designated as Hedging Instrument [Member] | Interest Rate Derivatives [Member] | Other Noncurrent Assets [Member]	'	'
Derivative [Line Items]	'	'
Derivative assets	164	147
Designated as Hedging Instrument [Member] | Interest Rate Derivatives [Member] | Other Noncurrent Liabilities [Member]	'	'
Derivative [Line Items]	'	'
Derivative liabilities	0	2
Designated as Hedging Instrument [Member] | Equity Derivatives [Member] | Other Current Assets [Member]	'	'
Derivative [Line Items]	'	'
Derivative assets	0	0
Designated as Hedging Instrument [Member] | Equity Derivatives [Member] | Other Current Liabilities [Member]	'	'
Derivative [Line Items]	'	'
Derivative liabilities	122	155
Derivatives Not Designated As Hedging Instruments [Member] | Foreign Exchange Contract | Other Current Assets [Member]	'	'
Derivative [Line Items]	'	'
Derivative assets	3	2
Derivatives Not Designated As Hedging Instruments [Member] | Foreign Exchange Contract | Other Current Liabilities [Member]	'	'
Derivative [Line Items]	'	'
Derivative liabilities	$13	$7

Derivative_Instruments_Effect_

Derivative Instruments (Effect Of Derivative Instruments Designated As Cash Flow Hedges And Net Investment Hedging Instruments On Other Comprehensive And Consolidated Statements Of Operations Summary) (Details) (USD $)	3 Months Ended
In Millions, unless otherwise specified	Oct. 26, 2013	Oct. 27, 2012
Cash Flow Hedging [Member]	'	'
Derivative [Line Items]	'	'
Gains (losses) recognized in OCI on derivatives (effective portion)	$38	$66
Gains (losses) reclassified from AOCI into income (effective portion)	9	-5
Cash Flow Hedging [Member] | Foreign Currency Derivatives-Cash Flow Hedges [Member]	'	'
Derivative [Line Items]	'	'
Gains (losses) recognized in OCI on derivatives (effective portion)	38	66
Cash Flow Hedging [Member] | Foreign Currency Derivatives-Cash Flow Hedges [Member] | Operating Expenses [Member]	'	'
Derivative [Line Items]	'	'
Gains (losses) reclassified from AOCI into income (effective portion)	7	-4
Cash Flow Hedging [Member] | Foreign Currency Derivatives-Cash Flow Hedges [Member] | Cost Of Sales-Service [Member]	'	'
Derivative [Line Items]	'	'
Gains (losses) reclassified from AOCI into income (effective portion)	2	-1
Net Investment Hedging [Member]	'	'
Derivative [Line Items]	'	'
Gains (losses) recognized in OCI on derivatives (effective portion)	-19	-24
Net Investment Hedging [Member] | Other income (loss), net [Member]	'	'
Derivative [Line Items]	'	'
Gains (losses) reclassified from AOCI into income (effective portion)	$0	$0

Derivative_Instruments_Effect_1

Derivative Instruments (Effect Of Derivative Instruments Designated As Fair Value Hedges And Underlying Hedged Items On Consolidated Statements Of Operations Summary) (Details) (Derivatives Designated As Fair Value Hedging Instruments [Member], USD $)	3 Months Ended
In Millions, unless otherwise specified	Oct. 26, 2013	Oct. 27, 2012
Hedge Underlying Gain Loss [Line Items]	'	'
Gains (losses) on derivative instruments	($17)	($21)
Change in Unrealized Gain (Loss) on Hedged Item in Fair Value Hedge	15	21
Equity Contract [Member] | Other income (loss), net [Member]	'	'
Hedge Underlying Gain Loss [Line Items]	'	'
Gains (losses) on derivative instruments	-35	-3
Change in Unrealized Gain (Loss) on Hedged Item in Fair Value Hedge	35	3
Interest Rate Contract [Member] | Interest Expense [Member]	'	'
Hedge Underlying Gain Loss [Line Items]	'	'
Gains (losses) on derivative instruments	18	-18
Change in Unrealized Gain (Loss) on Hedged Item in Fair Value Hedge	($20)	$18

Derivative_Instruments_Effect_2

Derivative Instruments (Effect Of Derivative Instruments Not Designated As Hedges On Consolidated Statement Of Operations Summary) (Details) (USD $)	3 Months Ended
In Millions, unless otherwise specified	Oct. 26, 2013	Oct. 27, 2012
Derivative [Line Items]	'	'
Derivative Instruments Not Designated as Hedging Instruments, Gain (Loss), Net	$71	$76
Foreign Exchange Contract | Other income (loss), net [Member]	'	'
Derivative [Line Items]	'	'
Derivative Instruments Not Designated as Hedging Instruments, Gain (Loss), Net	43	53
Total Return Swaps-Deferred Compensation [Member] | Operating Expenses [Member]	'	'
Derivative [Line Items]	'	'
Derivative Instruments Not Designated as Hedging Instruments, Gain (Loss), Net	17	14
Equity Derivatives [Member] | Other income (loss), net [Member]	'	'
Derivative [Line Items]	'	'
Derivative Instruments Not Designated as Hedging Instruments, Gain (Loss), Net	$11	$9

Derivative_Instruments_Schedul

Derivative Instruments (Schedule Of Notional Amounts Of Derivatives Outstanding) (Details) (USD $)	Oct. 26, 2013	Jul. 27, 2013
In Millions, unless otherwise specified
Derivative [Line Items]	'	'
Notional amount of derivatives	$12,800	$12,992
Designated as Hedging Instrument [Member] | Foreign Exchange Contract	'	'
Derivative [Line Items]	'	'
Notional amount of derivatives	1,772	1,885
Designated as Hedging Instrument [Member] | Interest Rate Derivatives [Member]	'	'
Derivative [Line Items]	'	'
Notional amount of derivatives	5,750	5,250
Designated as Hedging Instrument [Member] | Net Investment Hedging [Member]	'	'
Derivative [Line Items]	'	'
Notional amount of derivatives	577	662
Designated as Hedging Instrument [Member] | Equity [Member]	'	'
Derivative [Line Items]	'	'
Notional amount of derivatives	779	1,098
Derivatives Not Designated As Hedging Instruments [Member] | Foreign Exchange Contract	'	'
Derivative [Line Items]	'	'
Notional amount of derivatives	3,526	3,739
Derivatives Not Designated As Hedging Instruments [Member] | Total Return Swap [Member]	'	'
Derivative [Line Items]	'	'
Notional amount of derivatives	$396	$358

Derivative_Instruments_Derivat1

Derivative Instruments Derivative Instruments (Derivatives Offset in Balance Sheet) (Details) (USD $)	Oct. 26, 2013	Jul. 27, 2013
In Millions, unless otherwise specified
Derivative Asset, Fair Value, Amount Not Offset Against Collateral [Abstract]	'	'
Derivative Asset, Gross Amount	$224	$182
Gross Derivative Amounts Eligibile for Offsetting	-99	-120
Derivative Asset, Net Amount	125	62
Derivative Liability, Gross Amount	145	171
Gross Derivative Amounts Eligible for Offsetting	-99	-120
Derivative Liability, Net Amount	$46	$51

Derivative_Instruments_Additio

Derivative Instruments (Additional Information) (Details) (USD $)	3 Months Ended			3 Months Ended
In Millions, unless otherwise specified	Oct. 26, 2013	Oct. 26, 2013	Jul. 27, 2013	Oct. 26, 2013	Oct. 26, 2013	Oct. 26, 2013
		Fixed Income Securities [Member]	Fixed Income Securities [Member]	Senior Notes [Member]	Cash Flow Hedging [Member]	Net Investment Hedging [Member]
					Foreign Exchange Contract
Derivative [Line Items]	'	'	'	'	'	'
Number of Interest Rate Derivatives Held	'	0	0	'	'	'
Net derivative gains to be reclassified from AOCI into earnings in next twelve months	$49	'	'	'	'	'
Foreign currency cash flow hedges maturity period, maximum (in months)	'	'	'	'	'0 years 18 months 0 days	'0 years 6 months 0 days
Description of Interest Rate Derivative Activities	'	'	'	'In fiscal 2014 and 2013, the Company entered into interest rate swaps designated as fair value hedges related to fixed-rate senior notes that were issued in February 2009 and November 2009 and are due in 2019 and 2020, respectively. In the previous periods, the Company entered into interest rate swaps designated as fair value hedges related to fixed-rate senior notes that were issued in 2006 and 2011 and are due in 2014, 2016, and 2017.	'	'

Commitments_And_Contingencies_1

Commitments And Contingencies (Schedule Of Future Annual Minimum Lease Payments Under All Noncancelable Operating Leases) (Details) (USD $)	Oct. 26, 2013
In Millions, unless otherwise specified
Operating Leases, Future Minimum Payments Due, Fiscal Year Maturity [Abstract]	'
2014 (remaining nine months)	$293
2015	314
2016	169
2017	103
2018	75
Thereafter	198
Total	$1,152

Commitments_And_Contingencies_2

Commitments And Contingencies (Schedule Of Product Warranty Liability) (Details) (USD $)	3 Months Ended
In Millions, unless otherwise specified	Oct. 26, 2013	Oct. 27, 2012
Movement in Standard and Extended Product Warranty, Increase (Decrease) [Roll Forward]	'	'
Balance at beginning of fiscal year	$431	$415
Provision for warranties issued	240	162
Payments	-179	-155
Balance at end of fiscal year	$492	$422

Commitments_And_Contingencies_3

Commitments And Contingencies (Additional Information) (Details) (USD $)

Oct. 26, 2013

Jul. 27, 2013

Oct. 26, 2013

Oct. 26, 2013

Oct. 26, 2013

Oct. 27, 2012

Oct. 26, 2013

Oct. 26, 2013

Jul. 27, 2013

Oct. 26, 2013

Oct. 27, 2012

Apr. 27, 2013

Oct. 26, 2013

Oct. 26, 2013

Oct. 26, 2013

Oct. 26, 2013

Oct. 26, 2013

Minimum [Member]

Maximum [Member]

Acquisition [Member]

Acquisition [Member]

Acquisition [Member]

Investments In Privately Held Companies

Investments In Privately Held Companies

VCE [Member]

VCE [Member]

VCE [Member]

Insieme Networks Inc [Member]

Insieme Networks Inc [Member]

Insieme Networks Inc [Member]

XpertUniverse [Member]

XpertUniverse [Member]

Maximum [Member]

November 2012 Amendment [Member]

Including $257M expensed year-to-date [Member]

Fraud by concealment claims [Member]

Maximum [Member]

Maximum [Member]

Patents infringement [Member]

Site Contingency [Line Items]

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Inventory purchase commitments

$4,020,000,000

$4,033,000,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Recorded liabilities related to inventory purchase commitments

169,000,000

172,000,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Compensation Expense

'

'

'

'

304,000,000

12,000,000

853,000,000

'

'

'

'

'

257,000,000

'

863,000,000

'

'

Funding commitments

'

'

'

'

'

'

'

265,000,000

263,000,000

'

'

'

'

'

'

'

'

Cumulative investment in entity

'

'

'

'

'

'

'

'

'

578,000,000

'

'

'

'

'

'

'

Ownership percentage in entity (in percentage)

'

'

'

'

'

'

'

'

'

35.00%

'

'

'

'

'

'

'

Investments for the period, equity method

'

'

'

'

'

'

'

'

'

64,000,000

'

'

'

'

'

'

'

Company's share of VCE's losses (in percentage)

'

'

'

'

'

'

'

'

'

36.80%

36.80%

'

'

'

'

'

'

Cumulative lossess - VCE

'

'

'

'

'

'

'

'

'

53,000,000

42,000,000

475,000,000

'

'

'

'

'

VCE-Carrying Value

'

'

'

'

'

'

'

'

'

103,000,000

'

'

'

'

'

'

'

Initial investment in Insieme

'

'

'

'

'

'

'

'

'

'

'

'

100,000,000

'

'

'

'

Conditional additional investment in Insieme

'

'

'

'

'

'

'

'

'

'

'

'

'

35,000,000

'

'

'

Ownership percentage of Insieme

'

'

'

'

'

'

'

'

'

'

'

'

83.00%

'

'

'

'

Warranty Period for Products, low range (in days)

'

'

'90 days

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Warranty Period For Products, high range (in years)

'

'

'

'5 years

'

'

'

'

'

'

'

'

'

'

'

'

'

Brazilian authority claim of import tax evasion by importer, tax portion

394,000,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Brazilian authority claim of import tax evasion by importer, interest portion

1,200,000,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Brazilian authority claim of import tax evasion by importer, penalties portion

1,800,000,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Loss Contingency, Damages Awarded, Value

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

70,000,000

35,000

Loss Contingency, Damages Award Vacated, Value

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

($70,000,000)

'

Shareholders_Equity_Stock_Repu

Shareholders' Equity (Stock Repurchase Program) (Detail) (USD $)	3 Months Ended
In Millions, except Per Share data, unless otherwise specified	Oct. 26, 2013
Stock Repurchase Program [Roll Forward]	'
Cumulative shares repurchased, beginning balance	3,868
Repurchase of common stock under the stock repurchase program	84
Cumulative shares repurchased, ending balance	3,952
Cumulative weighted-average price per share, beginning balance	$20.40
Weighted Average Price Per Share Of Stock Repurchased In Period	$23.65
Cumulative weighted-average price per share, ending balance	$20.47
Cumulative amount repurchased, beginning balance	$78,906
Repurchase of common stock under the stock repurchase program, amount	2,000
Cumulative amount repurchased, ending balance	$80,906

Shareholders_Equity_Additional

Shareholders' Equity - Additional Information (Detail) (USD $)	0 Months Ended	3 Months Ended
Share data in Millions, except Per Share data, unless otherwise specified	Nov. 13, 2013	Oct. 26, 2013	Oct. 27, 2012
Shareholders Equity [Line Items]	'	'	'
Cash dividends declared per common share (in dollars per share)	'	$0.17	$0.14
Payments of Dividends	'	$914,000,000	$744,000,000
Stock Repurchase Program, Authorized Amount	15,000,000,000	82,000,000,000	'
Stock Repurchase Program, Remaining Authorized Repurchase Amount	'	16,100,000,000	'
Shares Withheld for Employee Tax Withholding Upon Vesting of RSU (in shares)	'	12	11
Payments Related to Tax Withholding for Share-based Compensation	'	$286,000,000	$203,000,000

Employee_Benefit_Plans_Summary

Employee Benefit Plans (Summary Of Share-Based Compensation Expense) (Detail) (USD $)	3 Months Ended
In Millions, unless otherwise specified	Oct. 26, 2013	Oct. 27, 2012
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]	'	'
Total Share-based Compensation Expense	$309	$306
Income tax benefit for employee share-based compensation expense	78	79
Cost Of Sales Product [Member]	'	'
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]	'	'
Total Share-based Compensation Expense	10	10
Cost Of Sales-Service [Member]	'	'
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]	'	'
Total Share-based Compensation Expense	33	35
Cost of Sales [Member]	'	'
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]	'	'
Total Share-based Compensation Expense	43	45
Operating Expenses [Member]	'	'
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]	'	'
Total Share-based Compensation Expense	266	261
Research And Development [Member]	'	'
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]	'	'
Total Share-based Compensation Expense	92	84
Sales And Marketing [Member]	'	'
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]	'	'
Total Share-based Compensation Expense	123	130
General And Administrative [Member]	'	'
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]	'	'
Total Share-based Compensation Expense	54	50
Restructuring And Other Charges [Member]	'	'
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]	'	'
Total Share-based Compensation Expense	($3)	($3)

Employee_Benefit_Plans_Summary1

Employee Benefit Plans (Summary Of Share-Based Awards Available For Grant) (Detail)	3 Months Ended	12 Months Ended
In Millions, unless otherwise specified	Oct. 26, 2013	Jul. 27, 2013
Share-based Awards Available for Grant [Roll Forward]	'	'
Beginning balance (in shares)	228	218
Restricted stock, stock units, and other share-based awards granted	-24	-102
Stock Issued During Period, Shares, Share-based Compensation, Forfeited	13	115
Other	0	-3
Ending balance (in shares)	217	228

Employee_Benefit_Plans_Summary2

Employee Benefit Plans (Summary Of Restricted Stock And Stock Unit Activity) (Detail) (Restricted Stock [Member], USD $)	3 Months Ended	12 Months Ended
In Millions, except Share data, unless otherwise specified	Oct. 26, 2013	Jul. 27, 2013
Restricted Stock [Member]	'	'
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested [Roll Forward]	'	'
Unvested balance at beginning period (in shares)	143,000,000	128,000,000
Granted and assumed	21,000,000	72,000,000
Vested	-35,000,000	-46,000,000
Canceled/forfeited	-5,000,000	-11,000,000
Unvested balance at ending period (in shares)	124,000,000	143,000,000
Beginning balance, weighted-average grant date fair value per share	$18.80	$19.46
Granted and assumed, weighed-average grant date fair value per share	$22.53	$18.52
Vested, weighted-average grant date fair value per share	$19.51	$20.17
Canceled/forfeited, weighted-average grant date fair value per share	$18.32	$18.91
Ending balance, weighted-average grant date fair value per share	$19.26	$18.80
Vested, aggregated fair market value	$834	$932

Employee_Benefit_Plans_Summary3

Employee Benefit Plans (Summary Of Stock Option Activity) (Detail) (USD $)	3 Months Ended	12 Months Ended
In Millions, except Per Share data, unless otherwise specified	Oct. 26, 2013	Jul. 27, 2013
Employee Service Share-based Compensation, Aggregate Disclosures [Abstract]	'	'
Beginning balance, Number Outstanding (in shares)	276	520
Share Based Compensation Arrangement By Share Based Payment Award Options Assumed From Acquisitions In Period	3	10
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercises in Period (in shares)	-24	-154
Share-based Compensation Arrangement by Share-based Payment Award, Options, Forfeitures in Period	-6	-100
Ending balance, Number Outstanding (in shares)	249	276
Weighted-average exercise price per share, beginning balance	$24.44	$22.68
Share Based Compensation Arrangement By Share Based Payment Award Options Assumed From Acquisition In Period Weighted Average Exercise Price	$6.03	$0.77
Exercised, weighted-average exercise price per share	$19.01	$18.51
Canceled/forfeited/expired, weighted-average exercise price per share	$29.16	$22.18
Weighted-average exercise price per share, beginning balance	$24.62	$24.44

Employee_Stock_Plans_Summary_O

Employee Stock Plans (Summary Of Significant Ranges Of Outstanding And Exercisable Stock Options) (Detail) (USD $)	3 Months Ended
In Millions, except Per Share data, unless otherwise specified	Oct. 26, 2013	Jul. 27, 2013	Jul. 28, 2012
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]	'	'	'
Stock options outstanding	249	276	520
Stock options outstanding, weighted-average remaining contractual life	'2 years 4 months 2 days	'	'
Stock options outstanding, weighted-average exercise price per share	$24.62	$24.44	$22.68
Stock options outstanding, aggregate intrinsic value	$418	'	'
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercisable, Number	244	271	'
Stock options exercisable, weighted-average exercise price per share	$25.08	$24.84	'
Stock options exercisable, aggregate intrinsic value	316	'	'
$0.01 - 15.00	'	'	'
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]	'	'	'
Stock options outstanding	11	'	'
Stock options outstanding, weighted-average remaining contractual life	'5 years 6 months 14 days	'	'
Stock options outstanding, weighted-average exercise price per share	$4.66	'	'
Stock options outstanding, aggregate intrinsic value	198	'	'
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercisable, Number	6	'	'
Stock options exercisable, weighted-average exercise price per share	$6.25	'	'
Stock options exercisable, aggregate intrinsic value	96	'	'
Range of exercise price of stock options outstanding and exercisable, minimum	$0.01	'	'
Range of exercise price of stock options outstanding and exercisable, maximum	$15	'	'
$15.01 - 18.00	'	'	'
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]	'	'	'
Stock options outstanding	35	'	'
Stock options outstanding, weighted-average remaining contractual life	'11 months 16 days	'	'
Stock options outstanding, weighted-average exercise price per share	$17.79	'	'
Stock options outstanding, aggregate intrinsic value	165	'	'
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercisable, Number	35	'	'
Stock options exercisable, weighted-average exercise price per share	$17.79	'	'
Stock options exercisable, aggregate intrinsic value	165	'	'
Range of exercise price of stock options outstanding and exercisable, minimum	$15.01	'	'
Range of exercise price of stock options outstanding and exercisable, maximum	$18	'	'
$18.01 - 20.00	'	'	'
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]	'	'	'
Stock options outstanding	13	'	'
Stock options outstanding, weighted-average remaining contractual life	'9 months 22 days	'	'
Stock options outstanding, weighted-average exercise price per share	$19.13	'	'
Stock options outstanding, aggregate intrinsic value	43	'	'
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercisable, Number	13	'	'
Stock options exercisable, weighted-average exercise price per share	$19.13	'	'
Stock options exercisable, aggregate intrinsic value	43	'	'
Range of exercise price of stock options outstanding and exercisable, minimum	$18.01	'	'
Range of exercise price of stock options outstanding and exercisable, maximum	$20	'	'
$20.01 - 25.00	'	'	'
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]	'	'	'
Stock options outstanding	79	'	'
Stock options outstanding, weighted-average remaining contractual life	'1 year 11 months 26 days	'	'
Stock options outstanding, weighted-average exercise price per share	$22.83	'	'
Stock options outstanding, aggregate intrinsic value	12	'	'
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercisable, Number	79	'	'
Stock options exercisable, weighted-average exercise price per share	$22.83	'	'
Stock options exercisable, aggregate intrinsic value	12	'	'
Range of exercise price of stock options outstanding and exercisable, minimum	$20.01	'	'
Range of exercise price of stock options outstanding and exercisable, maximum	$25	'	'
$25.01 - 35.00	'	'	'
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]	'	'	'
Stock options outstanding	111	'	'
Stock options outstanding, weighted-average remaining contractual life	'2 years 10 months 13 days	'	'
Stock options outstanding, weighted-average exercise price per share	$30.69	'	'
Stock options outstanding, aggregate intrinsic value	0	'	'
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercisable, Number	111	'	'
Stock options exercisable, weighted-average exercise price per share	$30.69	'	'
Stock options exercisable, aggregate intrinsic value	$0	'	'
Range of exercise price of stock options outstanding and exercisable, minimum	$25.01	'	'
Range of exercise price of stock options outstanding and exercisable, maximum	$35	'	'

Employee_Benefit_Plans_Summary4

Employee Benefit Plans (Summary Of Assumptions Used for Valuation Of Employee Share-Based Awards) (Detail) (USD $)	3 Months Ended
	Oct. 26, 2013	Oct. 27, 2012
Restricted Stock [Member]	'	'
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]	'	'
Granted (In shares)	10,000,000	11,000,000
Grant Date Fair Value Per Share, RSU	$23.11	$17.65
Expected dividend yield	2.70%	2.90%
Range of risk-free interest rates - minimum	0.00%	0.10%
Range of risk-free interest rates - maximum	1.40%	0.70%
Performance Shares [Member]	'	'
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]	'	'
Granted (In shares)	4,000,000	4,000,000
Grant Date Fair Value Per Share, RSU	$22.70	$19.26
Expected dividend yield	2.30%	2.90%
Range of risk-free interest rates - minimum	0.00%	0.10%
Range of risk-free interest rates - maximum	1.40%	0.70%
Range of Expected Volatility Rate, Minimum	17.40%	18.30%
Range of Expected Volatility Rate, Maximum	70.50%	64.60%

Employee_Benefit_Plans_Additio

Employee Benefit Plans - Additional Information (Detail) (USD $)

3 Months Ended

12 Months Ended

3 Months Ended

3 Months Ended

12 Months Ended

3 Months Ended

Oct. 26, 2013

Oct. 27, 2012

Jul. 27, 2013

Oct. 25, 2013

Jul. 28, 2012

Oct. 26, 2013

Nov. 19, 2013

Oct. 26, 2013

Oct. 26, 2013

Oct. 26, 2013

Oct. 26, 2013

Oct. 26, 2013

Oct. 26, 2013

Jul. 27, 2013

Jul. 27, 2013

Oct. 26, 2013

Oct. 26, 2013

Oct. 26, 2013

Oct. 26, 2013

Oct. 26, 2013

Oct. 27, 2012

Oct. 26, 2013

stock_incentive_plan

2005 Plan [Member]

2005 Plan [Member]

2005 Plan [Member]

2005 Plan [Member]

2005 Plan [Member]

2005 Plan [Member]

2005 Plan [Member]

2005 Plan [Member]

2005 Plan [Member]

2005 Plan [Member]

2005 Plan [Member]

1996 Plan [Member]

1996 Plan [Member]

1996 Plan [Member]

Employee Stock [Member]

Employee Stock [Member]

Supplemental Plan [Member]

Stock awards subsequent to November 12, 2009 [Member]

Employee Stock Option [Member]

Employee Stock Option [Member]

Restricted Stock Units (RSUs) [Member]

Restricted Stock Units (RSUs) [Member]

Performance Shares [Member]

Performance Shares [Member]

Performance Shares [Member]

Stock awards prior to November 12, 2009 [Member]

M

Minimum [Member]

Maximum [Member]

Minimum [Member]

Maximum [Member]

Minimum [Member]

Maximum [Member]

Minimum [Member]

Maximum [Member]

Share-based Compensation Arrangement by Share-based Payment Award [Line Items]

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Number Of Stock Incentive Plans

5

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Shares reserved for issuance (in shares)

'

'

'

'

'

559,000,000

694,000,000

'

'

'

'

'

'

'

'

'

'

'

'

471,400,000

'

9,000,000

Reduction in number of shares available for issuance after amendment approved by shareholders (ratio)

'

'

'

'

'

1.5

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Stock options and stock appreciation rights exercise price percentage of the fair market value of the underlying stock on the grant date (percentage)

'

'

'

'

'

100.00%

'

'

'

'

'

'

'

'

'

'

100.00%

'

'

'

'

'

Share-based Compensation Arrangement by Share-based Payment Award, Expiration Period

'

'

'

'

'

'

'

'10 years

'

'

'

'

'

'

'

'9 years

'9 years

'

'

'

'

'

Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Rights, Percentage

'

'

'

'

'

'

'

'

25.00%

20.00%

25.00%

20.00%

'

0.00%

150.00%

'

'

25.00%

20.00%

'

'

'

Share-based Compensation Arrangement by Share-based Payment Award, Award Requisite Service Period

'

'

'

'

'

'

'

'

'36 months

'48 months

'

'

'3 years

'

'

'

'

'36 months

'48 months

'

'

'

Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Authorized

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

2,500,000,000

'

'

'

'

'

Number of months in which stock options ratably exercise, nonstandard

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

60

'

'

'

'

'

ESPP- offering period description

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

' 24-month offering period, which consists of four consecutive 6-month purchase periods.

'

'

Share-based Compensation Arrangement by Share-based Payment Award, Discount from Market Price, Offering Date (in percentage)

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

15.00%

'

'

Share-based Compensation Arrangement by Share-based Payment Award, Expiration Date

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

3-Jan-20

'

'

Shares issued under employee purchase plan (in shares)

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

0

0

'

Shares available for issuance under Employee Stock Purchase Plan (in shares)

217,000,000

'

228,000,000

'

218,000,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

51,000,000

'

'

Unrecognized compensation cost related to unvested share-based awards

$2,400,000,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Expected period of recognition of compensation cost, years

'2 years 6 months

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Income tax benefit for employee share-based compensation expense

$78,000,000

$79,000,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Closing stock price

'

'

'

$22.46

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

In-the-money exercisable stock option (in shares)

61,000,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Stock options exercisable (in shares)

244,000,000

'

271,000,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Stock options exercisable, weighted-average exercise price per share

$25.08

'

$24.84

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Performance restricted stock units, based on operating performance goals

'

'

50.00%

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Performance restricted stock units, based on TSR

'

'

50.00%

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Comprehensive_Income_AOCI_Comp

Comprehensive Income (AOCI Components) (Details) (USD $)	Oct. 26, 2013	Jul. 27, 2013	Oct. 26, 2013	Oct. 27, 2012	Oct. 26, 2013	Oct. 27, 2012	Oct. 26, 2013	Oct. 27, 2012	Oct. 26, 2013	Oct. 27, 2012
In Millions, unless otherwise specified			Available-for-sale Securities [Member]	Available-for-sale Securities [Member]	Derivative [Member]	Derivative [Member]	Accumulated Translation Adjustment [Member]	Accumulated Translation Adjustment [Member]	Parent [Member]	Parent [Member]
Accumulated Other Comprehensive Income (Loss), Net of Tax	$772	$608	$379	$409	$8	($53)	$221	$305	$608	$661
OCI, Unrealized Holding Gain (Loss) on Securities Arising During Period, before Reclassification & Tax	'	'	170	3	'	'	'	'	'	'
Amount Reclassified Out of OCI, Before Tax	'	'	-83	-27	'	'	'	'	'	'
OCI, Unrealized Gain (Loss) on Derivatives Arising During Period, before Reclassification & Tax	'	'	'	'	38	66	'	'	'	'
Amount Reclassified Out of OCI, Before Tax	'	'	'	'	-9	5	'	'	'	'
OCI, Foreign Currency Transaction and Translation Gain (Loss), before Reclassification and Tax	'	'	'	'	'	'	76	124	'	'
Amount Reclassified Out of OCI, Before Tax	'	'	'	'	'	'	0	0	'	'
Other Comprehensive Income (Loss), before Tax, Portion Attributable to Parent	'	'	'	'	'	'	'	'	284	193
Amount Reclassified Out of OCI, Before Tax	'	'	'	'	'	'	'	'	-92	-22
Tax benefit (expense)	'	'	-22	11	-3	0	-3	-10	-28	1
Accumulated Other Comprehensive Income (Loss), Net of Tax	$772	$608	$444	$396	$34	$18	$294	$419	$772	$833

Comprehensive_Income_Reclassif

Comprehensive Income (Reclassified Out of Other Comprehensive Income) (Details) (USD $)	3 Months Ended
In Millions, unless otherwise specified	Oct. 26, 2013	Oct. 27, 2012
Available-for-sale Securities [Member]	'	'
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]	'	'
Amount Reclassified Out of OCI, Before Tax	($83)	($27)
Available-for-sale Securities [Member] | Other income (loss), net [Member]	'	'
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]	'	'
Amount Reclassified Out of OCI, Before Tax	-83	-27
Derivative [Member]	'	'
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]	'	'
Amount Reclassified Out of OCI, Before Tax	-9	5
Derivative [Member] | Operating Expenses [Member]	'	'
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]	'	'
Amount Reclassified Out of OCI, Before Tax	-7	4
Derivative [Member] | Cost Of Sales-Service [Member]	'	'
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]	'	'
Amount Reclassified Out of OCI, Before Tax	-2	1
Parent [Member]	'	'
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]	'	'
Amount Reclassified Out of OCI, Before Tax	($92)	($22)

Income_Taxes_Income_Before_Pro

Income Taxes (Income Before Provision For Income Taxes) (Detail) (USD $)	3 Months Ended
In Millions, unless otherwise specified	Oct. 26, 2013	Oct. 27, 2012
Income Tax Disclosure [Abstract]	'	'
Income before provision for income taxes	$2,540	$2,631
Provision for income taxes	$544	$539
Effective tax rate	21.40%	20.50%

Income_Taxes_Additional_Inform

Income Taxes - Additional Information (Detail) (USD $)	Oct. 26, 2013
Income Tax Disclosure [Abstract]	'
Unrecognized Tax Benefits	$1,800,000,000
Unrecognized tax benefits that would impact tax rate	1,600,000,000
Unrecognized Tax Benefits Reasonably Possible Reduced in the next 12 Months	$200,000,000

Segment_Information_And_Major_2

Segment Information And Major Customers (Reportable Segments) (Detail) (USD $)	3 Months Ended
In Millions, unless otherwise specified	Oct. 26, 2013	Oct. 27, 2012
Segment Reporting Information [Line Items]	'	'
Revenues	$12,085	$11,876
Segment Gross Margin	7,617	7,442
Total Gross Margin	7,407	7,239
Corporate, Non-Segment [Member]	'	'
Segment Reporting Information [Line Items]	'	'
Total Gross Margin	-210	-203
Americas [Member]	'	'
Segment Reporting Information [Line Items]	'	'
Revenues	7,316	7,023
Segment Gross Margin	4,650	4,468
EMEA	'	'
Segment Reporting Information [Line Items]	'	'
Revenues	2,933	2,841
Segment Gross Margin	1,888	1,798
Asia Pacific Japan And China [Member]	'	'
Segment Reporting Information [Line Items]	'	'
Revenues	1,836	2,012
Segment Gross Margin	$1,079	$1,176

Segment_Information_And_Major_3

Segment Information And Major Customers (Net Sales For Groups Of Similar Products And Services) (Detail) (USD $)	3 Months Ended
In Millions, unless otherwise specified	Oct. 26, 2013	Oct. 27, 2012
Segment Reporting, Revenue Reconciling Item [Line Items]	'	'
Revenues	$12,085	$11,876
Switching	'	'
Segment Reporting, Revenue Reconciling Item [Line Items]	'	'
Revenues	3,754	3,629
NGN Routing	'	'
Segment Reporting, Revenue Reconciling Item [Line Items]	'	'
Revenues	2,043	2,055
Collaboration	'	'
Segment Reporting, Revenue Reconciling Item [Line Items]	'	'
Revenues	1,027	1,020
Service Provider Video	'	'
Segment Reporting, Revenue Reconciling Item [Line Items]	'	'
Revenues	987	1,149
Data Center [Member]	'	'
Segment Reporting, Revenue Reconciling Item [Line Items]	'	'
Revenues	601	417
Wireless [Member]	'	'
Segment Reporting, Revenue Reconciling Item [Line Items]	'	'
Revenues	540	499
Security [Member]	'	'
Segment Reporting, Revenue Reconciling Item [Line Items]	'	'
Revenues	365	338
Other Products [Member]	'	'
Segment Reporting, Revenue Reconciling Item [Line Items]	'	'
Revenues	80	190
Product [Member]	'	'
Segment Reporting, Revenue Reconciling Item [Line Items]	'	'
Revenues	9,397	9,297
Service [Member]	'	'
Segment Reporting, Revenue Reconciling Item [Line Items]	'	'
Revenues	$2,688	$2,579

Segment_Information_And_Major_4

Segment Information And Major Customers (Property And Equipment, Net) (Detail) (USD $)	Oct. 26, 2013	Jul. 27, 2013
In Millions, unless otherwise specified
Segment Reporting Information [Line Items]	'	'
Property and equipment, net	$3,273	$3,322
United States	'	'
Segment Reporting Information [Line Items]	'	'
Property and equipment, net	2,687	2,780
International [Member]	'	'
Segment Reporting Information [Line Items]	'	'
Property and equipment, net	$586	$542

Segment_Information_And_Major_5

Segment Information And Major Customers - Additional Information (Detail) (USD $)	3 Months Ended
	Oct. 26, 2013	Oct. 27, 2012	Jul. 27, 2013
Segment Reporting Information [Line Items]	'	'	'
Number of geographic segments	'three	'	'
Total revenue	$12,085,000,000	$11,876,000,000	'
United States	'	'	'
Segment Reporting Information [Line Items]	'	'	'
Total revenue	6,400,000,000	6,100,000,000	'
Cash, Cash Equivalents, and Investments	6,200,000,000	'	10,200,000,000
International [Member]	'	'	'
Segment Reporting Information [Line Items]	'	'	'
Cash, Cash Equivalents, and Investments	$42,000,000,000	'	$40,400,000,000

Net_Income_Per_Share_Calculati

Net Income Per Share (Calculation Of Basic And Diluted Net Income Per Share) (Detail) (USD $)	3 Months Ended
In Millions, except Per Share data, unless otherwise specified	Oct. 26, 2013	Oct. 27, 2012
Earnings Per Share [Abstract]	'	'
Net income	$1,996	$2,092
Weighted Average Shares, Basic (in shares)	5,378	5,301
Weighted Average Number Diluted Shares Outstanding Adjustment	52	33
Weighted-average shares-diluted (in shares)	5,430	5,334
Net income per share-basic	$0.37	$0.39
Earnings Per Share, Diluted	$0.37	$0.39
Antidilutive employee share-based awards, excluded	174	438