EMC 10-K 25 Feb 14 2013 FY Annual report Financial data

Document_and_Entity_Informatio

Document and Entity Information (USD $)	12 Months Ended
	Dec. 31, 2013	Jan. 31, 2014	Jun. 30, 2013
Document-Document and Entity Information [Abstract]	'	'	'
Document Type	'10-K	'	'
Amendment Flag	'false	'	'
Document Period End Date	31-Dec-13	'	'
Document Fiscal Year Focus	'2013	'	'
Document Fiscal Period Focus	'FY	'	'
Trading Symbol	'EMC	'	'
Entity Registrant Name	'EMC CORP	'	'
Entity Central Index Key	'0000790070	'	'
Current Fiscal Year End Date	'--12-31	'	'
Entity Well-known Seasoned Issuer	'Yes	'	'
Entity Current Reporting Status	'Yes	'	'
Entity Voluntary Filers	'No	'	'
Entity Filer Category	'Large Accelerated Filer	'	'
Entity Common Stock, Shares Outstanding	'	2,025,633,308	'
Entity Public Float	'	'	$49,015,382,041

CONSOLIDATED_BALANCE_SHEETS

CONSOLIDATED BALANCE SHEETS (USD $)	Dec. 31, 2013	Dec. 31, 2012
In Millions, unless otherwise specified
Current assets:	'	'
Cash and cash equivalents	$7,891	$4,714
Short-term investments	2,773	1,422
Accounts and notes receivable, less allowance for doubtful accounts of $62 and $68	3,861	3,433
Inventories	1,334	1,201
Deferred income taxes	912	784
Other current assets	507	465
Total current assets	17,278	12,019
Long-term investments	6,924	5,260
Property, plant and equipment, net	3,478	3,145
Intangible assets, net	1,780	2,035
Goodwill	14,424	13,840
Other assets, net	1,965	1,663
Total assets	45,849	37,962
Current liabilities:	'	'
Accounts payable	1,434	1,041
Accrued expenses	2,783	2,492
Notes converted and payable	1,665	0
Income taxes payable	639	514
Convertible debt	0	1,652
Deferred revenue	5,278	4,575
Total current liabilities	11,799	10,274
Income taxes payable	296	293
Deferred revenue	3,701	2,976
Deferred income taxes	421	468
Long-term debt	5,494	0
Other liabilities	352	369
Total liabilities	22,063	14,380
Convertible debt (See Note E)	0	58
Commitments and contingencies (See Note N)	'	'
Shareholders’ equity:	'	'
Preferred stock, par value $0.01; authorized 25 shares; none outstanding	0	0
Common stock, par value $0.01; authorized 6,000 shares; issued and outstanding 2,020 and 2,107 shares	20	21
Additional paid-in capital	1,406	3,691
Retained earnings	21,114	18,853
Accumulated other comprehensive income (loss), net	-239	-208
Total EMC Corporation’s shareholders’ equity	22,301	22,357
Non-controlling interests	1,485	1,167
Total shareholders’ equity	23,786	23,524
Total liabilities and shareholders’ equity	$45,849	$37,962

CONSOLIDATED_BALANCE_SHEETS_Pa

CONSOLIDATED BALANCE SHEETS (Parenthetical) (USD $)	Dec. 31, 2013	Dec. 31, 2012
In Millions, except Share data, unless otherwise specified
Accounts and notes receivable, allowance for doubtful accounts	$62	$68
Preferred stock, par value (in usd per share)	$0.01	$0.01
Preferred stock, authorized (in shares)	25,000,000	25,000,000
Preferred stock, outstanding (in shares)	0	0
Common stock, par value (in usd per share)	$0.01	$0.01
Common stock, authorized (in shares)	6,000,000,000	6,000,000,000
Common stock, issued (in shares)	2,020,000,000	2,107,000,000
Common stock, outstanding (in shares)	2,020,000,000	2,107,000,000

CONSOLIDATED_INCOME_STATEMENTS

CONSOLIDATED INCOME STATEMENTS (USD $)	12 Months Ended
In Millions, except Per Share data, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Revenues:	'	'	'
Product sales	$13,690	$13,061	$12,591
Services	9,532	8,653	7,417
Total consolidated revenues	23,222	21,714	20,008
Costs and expenses:	'	'	'
Cost of product sales	5,650	5,259	5,320
Cost of services	3,099	2,817	2,519
Research and development	2,761	2,560	2,151
Selling, general and administrative	7,338	7,004	6,479
Restructuring and acquisition-related charges	224	110	97
Operating income (loss)	4,150	3,964	3,442
Non-operating income (expense):	'	'	'
Investment income	128	115	129
Interest expense	-156	-79	-170
Other income (expense), net	-257	-196	-152
Total non-operating income (expense)	-285	-160	-193
Income before provision for income taxes	3,865	3,804	3,249
Income tax provision	772	918	640
Net income	3,093	2,886	2,609
Less: Net income attributable to the non-controlling interest in VMware, Inc.	-204	-153	-148
Net income attributable to EMC Corporation	$2,889	$2,733	$2,461
Net income per weighted average share, basic attributable to EMC Corporation common shareholders	$1.39	$1.31	$1.20
Net income per weighted average share, diluted attributable to EMC Corporation common shareholders	$1.33	$1.23	$1.10
Weighted average shares, basic	2,074	2,093	2,056
Weighted average shares, diluted	2,160	2,206	2,229
Cash dividends declared per common share	$0.30	$0	$0

CONSOLIDATED_STATEMENTS_OF_COM

CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (USD $)	12 Months Ended
In Millions, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Statement of Comprehensive Income [Abstract]	'	'	'
Net income	$3,093	$2,886	$2,609
Other comprehensive income (loss), net of taxes (benefits):	'	'	'
Foreign currency translation adjustments	-44	2	-4
Changes in market value of investments:	'	'	'
Changes in unrealized gains (losses), net of taxes (benefits) of $(13), $31 and $(11)	-22	53	-21
Reclassification adjustment for net losses (gains) realized in net income, net of benefits (taxes) of $(6), $(4) and $(4)	-11	-5	-5
Net change in market value of investments	-33	48	-26
Changes in market value of derivatives:	'	'	'
Changes in market value of derivatives, net of taxes (benefits) of $3, $(20) and $(58)	13	-36	-91
Reclassification adjustment for net losses (gains) included in net income, net of benefits (taxes) of $(2), $15 and $0	-10	28	-3
Net change in the market value of derivatives	3	-8	-94
Recognition of actuarial net gain (loss) from pension and other postretirement plan, net of taxes (benefits) of $26, $(5) and $(11)	43	-14	-22
Other comprehensive income (loss)	-31	28	-146
Comprehensive income	3,062	2,914	2,463
Less: Net income attributable to the non-controlling interest in VMware, Inc.	-204	-153	-148
Less: Other comprehensive income (loss) attributable to the non-controlling interest in VMware, Inc.	0	-2	4
Comprehensive income attributable to EMC Corporation	$2,858	$2,759	$2,319

CONSOLIDATED_STATEMENTS_OF_COM1

CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (Parenthetical) (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Changes in unrealized gains (losses) - taxes (benefits)	($13)	$31	($11)
Reclassification adjustment for net losses (gains) realized in net income - benefits (taxes)	-6	-4	-4
Changes in market value of derivatives - taxes (benefits)	3	-20	-58
Reclassification adjustment for net losses (gains) realized in net income - benefits (taxes)	-2	15	0
Actuarial gain (loss) on pension plans, tax benefit	$26	($5)	($11)

CONSOLIDATED_STATEMENTS_OF_CAS

CONSOLIDATED STATEMENTS OF CASH FLOWS (USD $)	12 Months Ended
In Millions, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Cash flows from operating activities:	'	'	'
Cash received from customers	$24,319	$22,585	$21,145
Cash paid to suppliers and employees	-16,708	-16,019	-15,219
Dividends and interest received	169	103	136
Interest paid	-96	-33	-70
Income taxes paid	-761	-374	-323
Net cash provided by operating activities	6,923	6,262	5,669
Cash flows from investing activities:	'	'	'
Additions to property, plant and equipment	-943	-819	-801
Capitalized software development costs	-465	-419	-442
Purchases of short- and long-term available-for-sale securities	-11,250	-6,347	-7,180
Sales of short- and long-term available-for-sale securities	5,292	4,983	5,121
Maturities of short- and long-term available-for-sale securities	2,845	1,049	1,130
Business acquisitions, net of cash acquired	-770	-2,136	-537
Purchases of strategic and other related investments	-131	-117	-329
Sales of strategic and other related investments	35	70	30
Joint venture funding	-411	-228	-383
Proceeds from divestiture of business	38	58	0
Purchase of leasehold interest	0	0	-151
Net cash used in investing activities	-5,760	-3,906	-3,542
Cash flows from financing activities:	'	'	'
Proceeds from the issuance of EMC’s common stock	342	560	673
Proceeds from the issuance of VMware’s common stock	197	253	338
EMC purchase of VMware’s common stock	-160	-290	-400
Excess tax benefits from stock-based compensation	116	261	362
Payment of long-term and short-term obligations	-46	-1,715	-28
Proceeds from the issuance of long-term and short-term obligations	5,460	5	3
Interest rate contract settlement	0	-70	-141
Dividend payment	-415	0	0
Third party contribution to Pivotal	105	0	0
Net cash provided by (used in) financing activities	2,076	-2,149	-1,719
Effect of exchange rate changes on cash and cash equivalents	-62	15	6
Net increase in cash and cash equivalents	3,177	222	414
Cash and cash equivalents at beginning of period	4,714	4,492	4,078
Cash and cash equivalents at end of period	7,891	4,714	4,492
Reconciliation of net income to net cash provided by operating activities:	'	'	'
Net income	3,093	2,886	2,609
Adjustments to reconcile net income to net cash provided by operating activities:	'	'	'
Depreciation and amortization	1,665	1,528	1,422
Non-cash interest expense on debt	62	46	103
Non-cash restructuring and other special charges	8	13	-1
Stock-based compensation expense	935	895	823
Provision for (recovery of) doubtful accounts	-1	-39	-20
Deferred income taxes, net	-202	-118	-19
Excess tax benefits from stock-based compensation	-116	-261	-362
Gain on XtremIO common stock	0	-32	0
Other, net	40	22	3
Changes in assets and liabilities, net of acquisitions:	'	'	'
Accounts and notes receivable	-377	-535	-392
Inventories	-408	-459	-393
Other assets	269	174	-62
Accounts payable	380	89	35
Accrued expenses	-162	-94	5
Income taxes payable	222	661	337
Deferred revenue	1,475	1,367	1,509
Other liabilities	40	41	32
Net cash provided by operating activities	6,923	6,262	5,669
Non-cash investing and financing activity:	'	'	'
Issuance of common stock and stock options exchanged in business acquisitions	1	24	3
Investment in joint venture	0	33	0
Dividends declared, unpaid	213	0	0
Parent	'	'	'
Cash flows from financing activities:	'	'	'
EMC repurchase of EMC’s common stock	-3,015	-685	-2,000
VMware	'	'	'
Cash flows from financing activities:	'	'	'
EMC repurchase of EMC’s common stock	($508)	($468)	($526)

CONSOLIDATED_STATEMENTS_OF_SHA

CONSOLIDATED STATEMENTS OF SHAREHOLDERS' EQUITY (USD $)	Total	Common Stock	Additional Paid-in Capital	Retained Earnings	Accumulated Other Comprehensive Loss	Non-controlling Interest in VMware
In Millions, unless otherwise specified
Balance, January 1, 2011 at Dec. 31, 2010	$18,634	$21	$4,284	$13,659	($93)	$763
Beginning Balance (in shares) at Dec. 31, 2010	'	2,070	'	'	'	'
Increase (Decrease) in Shareholders' Equity [Roll Forward]	'	'	'	'	'	'
Stock issued through stock option and stock purchase plans	'	52	'	'	'	'
Stock issued through stock option and stock purchase plans	673	0	673	'	'	'
Tax benefit from stock options exercised	383	'	383	'	'	'
Restricted stock grants, cancellations and withholdings, net	'	10	'	'	'	'
Restricted stock grants, cancellations and withholdings, net	-120	0	-120	'	'	'
Repurchase of common stock	'	-82	'	'	'	'
Repurchase of common stock	-2,000	0	-2,000	'	'	'
EMC purchase of VMware stock	-400	'	-355	'	'	-45
Stock options issued in business acquisitions	3	'	3	'	'	'
Stock-based compensation	838	'	838	'	'	'
Impact from equity transactions of VMware, Inc.	-310	'	-417	'	'	107
Recognition of actuarial net gain (loss) from pension and other postretirement plan, net of taxes (benefits) of $26, $(5) and $(11)	-22	'	'	'	-22	'
Change in market value of investments	-26	'	'	'	-22	-4
Change in market value of derivatives	-94	'	'	'	-94	0
Translation adjustment	-4	'	'	'	-4	'
Reclassification of convertible debt (to)/from mezzanine (Note E)	116	'	116	'	'	'
Net income	2,609	'	'	2,461	'	148
Balance, December 31, 2011 at Dec. 31, 2011	20,280	21	3,405	16,120	-235	969
Ending Balance (in shares) at Dec. 31, 2011	'	2,050	'	'	'	'
Increase (Decrease) in Shareholders' Equity [Roll Forward]	'	'	'	'	'	'
Stock issued through stock option and stock purchase plans	'	42	'	'	'	'
Stock issued through stock option and stock purchase plans	560	0	560	'	'	'
Tax benefit from stock options exercised	267	'	267	'	'	'
Restricted stock grants, cancellations and withholdings, net	'	11	'	'	'	'
Restricted stock grants, cancellations and withholdings, net	-126	0	-126	'	'	'
Repurchase of common stock	'	-27	'	'	'	'
Repurchase of common stock	-700	0	-700	'	'	'
EMC purchase of VMware stock	-300	'	-258	'	'	-42
Stock options issued in business acquisitions	20	'	20	'	'	'
Stock-based compensation	898	'	898	'	'	'
Impact from equity transactions of VMware, Inc.	-350	'	-436	'	'	86
Recognition of actuarial net gain (loss) from pension and other postretirement plan, net of taxes (benefits) of $26, $(5) and $(11)	-14	'	'	'	-14	'
Change in market value of investments	48	'	'	'	47	1
Change in market value of derivatives	-8	'	'	'	-8	0
Translation adjustment	2	'	'	'	2	'
Convertible debt conversions and warrant settlement	-1	-31	-1	'	'	'
Stock Issued During Period Value Stock Conversion Of Convertible Securities And Warrants	'	0	'	'	'	'
Reclassification of convertible debt (to)/from mezzanine (Note E)	62	'	62	'	'	'
Net income	2,886	'	'	2,733	'	153
Balance, December 31, 2011 at Dec. 31, 2012	23,524	21	3,691	18,853	-208	1,167
Ending Balance (in shares) at Dec. 31, 2012	2,107	2,107	'	'	'	'
Increase (Decrease) in Shareholders' Equity [Roll Forward]	'	'	'	'	'	'
Stock issued through stock option and stock purchase plans	'	24	'	'	'	'
Stock issued through stock option and stock purchase plans	342	0	342	'	'	'
Tax benefit from stock options exercised	90	'	90	'	'	'
Restricted stock grants, cancellations and withholdings, net	'	11	'	'	'	'
Restricted stock grants, cancellations and withholdings, net	-126	0	-126	'	'	'
Repurchase of common stock	'	-122	'	'	'	'
Repurchase of common stock	-3,000	-1	-2,999	'	'	'
EMC purchase of VMware stock	-150	'	-124	'	'	-26
Stock options issued in business acquisitions	1	'	1	'	'	'
Stock-based compensation	946	'	946	'	'	'
Cash dividends declared	-628	'	0	-628	'	0
Impact from equity transactions of VMware, Inc.	-333	'	-473	'	'	140
Recognition of actuarial net gain (loss) from pension and other postretirement plan, net of taxes (benefits) of $26, $(5) and $(11)	43	'	'	'	43	'
Change in market value of investments	-33	'	'	'	-33	0
Change in market value of derivatives	3	'	'	'	3	0
Translation adjustment	-44	'	'	'	-44	'
Reclassification of convertible debt (to)/from mezzanine (Note E)	58	'	58	'	'	'
Net income	3,093	'	'	2,889	'	204
Balance, December 31, 2011 at Dec. 31, 2013	$23,786	$20	$1,406	$21,114	($239)	$1,485
Ending Balance (in shares) at Dec. 31, 2013	2,020	2,020	'	'	'	'

CONSOLIDATED_STATEMENTS_OF_SHA1

CONSOLIDATED STATEMENTS OF SHAREHOLDERS' EQUITY Parenthetical (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Statement of Stockholders' Equity [Abstract]	'	'	'
Actuarial gain (loss) on pension plans, tax benefit	$26	($5)	($11)

Summary_of_Significant_Account

Summary of Significant Accounting Policies	12 Months Ended
	Dec. 31, 2013
Organization, Consolidation and Presentation of Financial Statements [Abstract]	'
Summary of Significant Accounting Policies	'
	Summary of Significant Accounting Policies
	Company
	EMC Corporation ("EMC") and its subsidiaries develop, deliver and support the information technology ("IT") industry’s broadest range of information infrastructure and virtual infrastructure technologies, solutions and services. EMC manages the Company as part of a federation of three businesses: EMC Information Infrastructure, VMware Virtual Infrastructure and Pivotal.
	EMC’s Information Infrastructure business provides a foundation for organizations to store, manage, protect, analyze and secure ever-increasing quantities of information, while at the same time improving business agility, lower cost, and enhancing competitive advantage. These benefits are primarily achieved though virtualization. EMC’s Information Infrastructure business comprises three segments – Information Storage, RSA Information Security and Information Intelligence Group.
	EMC’s VMware Virtual Infrastructure business, which is represented by EMC’s majority equity stake in VMware, Inc. ("VMware"), is the leader in virtualization infrastructure solutions utilized by organizations to help them transform the way they build, deliver and consume IT resources. VMware’s virtualization infrastructure solutions, which include a suite of products designed to deliver a software-defined data center, run on industry-standard desktop computers and servers and support a wide range of operating system and application environments, as well as networking and storage infrastructures.
	EMC's Pivotal business ("Pivotal") was formed in the second quarter of 2013. Pivotal unites strategic technology, people and programs formerly within EMC and VMware, including Greenplum, Cloud Foundry, Spring, Cetas, Pivotal Labs, GemFire and other products. Pivotal is building a new platform comprising next-generation data fabrics, application fabrics and a cloud independent PaaS.
	Accounting Principles
	The financial statements and accompanying notes are prepared in accordance with accounting principles generally accepted in the United States of America (“GAAP”).
	Principles of Consolidation
	These consolidated financial statements include the accounts of EMC, its wholly-owned subsidiaries, and Pivotal and VMware, companies which are majority-owned by EMC. All intercompany transactions have been eliminated.
	EMC’s interest in VMware was approximately 80% at both December 31, 2013 and 2012. VMware’s financial results have been consolidated with that of EMC for all periods presented as EMC is VMware’s controlling stockholder. The portion of the results of operations of VMware allocable to its other owners is shown as net income attributable to the non-controlling interest in VMware, Inc. on EMC’s consolidated income statements. Additionally, the cumulative portion of the results of operations of VMware allocable to its other owners, along with the interest in the net assets of VMware attributable to those other owners, is shown as a component of non-controlling interests on EMC's consolidated balance sheets and as a reduction of net income attributable to EMC shareholders.
	EMC's economic interest in Pivotal was approximately 84% at December 31, 2013. Pivotal's financial results have been consolidated with that of EMC for all periods presented. The non-controlling interests' share of equity in Pivotal is reflected as a component of the non-controlling interests in EMC's consolidated balance sheets and as a reduction of net income attributable to EMC shareholders. Because the non-controlling interest in Pivotal is in the form of a preferred equity instrument, there is no net income attributable to non-controlling interest related to Pivotal on EMC's consolidated income statements.
	Use of Accounting Estimates
	The preparation of financial statements in conformity with GAAP requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities at the date of the financial statements, the reported amounts of revenues and expenses during the reporting period and the disclosure of contingent assets and liabilities at the date of the financial statements. Actual results could differ from those estimates.
	Revenue Recognition
	We derive revenue from sales of information systems, software and services. We recognize revenue when persuasive evidence of an arrangement exists, delivery has occurred, the sales price is fixed or determinable and collectability is reasonably assured. This policy is applicable to all sales, including sales to resellers and end users. Delivery is achieved when our product has been physically shipped or made available by electronic delivery and the risk of loss has been transferred which, for most of our product sales, occurs upon shipment. The following summarizes the major terms of our contractual relationships with our customers and the manner in which we account for sales transactions.
	•	Systems sales
	Systems sales consist of the sale of storage hardware, required system software and other hardware-related devices. Revenue for systems sales is generally recognized upon shipment.
	•	Software sales
	Software sales consist of the sale of optional, stand-alone software applications. Our software applications provide customers with resource management, backup and archiving, information security, information management and intelligence, data analytics and server virtualization capabilities. Revenue for software is generally recognized upon shipment or electronic delivery. License revenue from royalty payments is recognized upon either receipt of royalty reports or payments from third parties.
	•	Services revenue
	Services revenue consists of installation services, professional services, software maintenance, hardware maintenance, software as a service subscriptions and training.
	We recognize revenue from fixed-price support or maintenance contracts sold for both hardware and software, including extended warranty contracts, ratably over the contract period and recognize the costs associated with these contracts as incurred. Generally, installation and professional services are not considered essential to the functionality of our products as these services do not alter the product capabilities and may be performed by our customers or other vendors. Installation services revenues are recognized as the services are being performed. Professional services revenues on engagements for which reasonably dependable estimates of progress toward completion are capable of being made are recognized using the proportional performance method, which recognizes revenue based on labor costs incurred in proportion to total expected labor costs to perform the service. Where services are considered essential to the functionality of our products, revenue for the products and services is recorded over the service period. Professional services engagements that are on a time and materials basis are recognized based upon the labor costs incurred. Revenues on all other professional services engagements are recognized upon completion.
	•	Multiple element arrangements
	When more than one element, such as hardware, software and services are contained in a single arrangement, we first allocate revenue based upon the relative selling price into two categories: (1) non-software components, such as hardware and any hardware-related items, such as required system software that functions with the hardware to deliver the essential functionality of the hardware and related post-contract customer support, software as a service subscriptions and other services and (2) software components, such as optional software applications and related items, such as post-contract customer support and other services. We then allocate revenue within the non-software category to each element based upon their relative selling price using estimated selling prices (“ESP”) if vendor-specific objective evidence (“VSOE”) or third-party evidence of selling price (“TPE”) does not exist. We allocate revenue within the software category to the undelivered elements based upon their fair value using VSOE with the residual revenue allocated to the delivered elements. If we cannot objectively determine the VSOE of the fair value of any undelivered software element, we defer revenue until all elements are delivered and services have been performed, or until fair value can objectively be determined for any remaining undelivered elements.
	We allocate the amount of revenue recognition for delivered elements to the amount that is not subject to forfeiture or refund or contingent on the future delivery of products or services.
	Customers under software maintenance agreements are entitled to receive updates and upgrades on a when-and-if-available basis, and various types of technical support based on the level of support purchased. In the event specific features, functionality, entitlements, or the release version of an upgrade or new product have been announced but not delivered, and customers will receive that upgrade or new product as part of a current software maintenance contract, a specified upgrade is deemed created and product revenues are deferred on purchases made after the announcement date until delivery of the upgrade or new product. The amount and elements to be deferred are dependent on whether we have established VSOE of fair value for the upgrade or new product.
	•	Indirect channel sales
	We market and sell our products through our direct sales force and indirect channels such as independent distributors and value-added resellers. For substantially all of our indirect sales, we recognize revenues on products sold to resellers and distributors on a sell through basis. These product sales are evidenced by a master distribution agreement, together with evidence of an end-user arrangement, on a transaction-by-transaction basis.
	We offer rebates to certain channel partners. We generally recognize the amount of the rebates as a reduction of revenues when the underlying revenue is recognized. We also offer marketing development funds to certain channel partners. We generally record the amount of the marketing development funds, based on the maximum potential liability, as a marketing expense as the funds are earned by the channel partners.
	•	Shipping terms
	Our sales contracts generally provide for the customer to accept risk of loss when the product leaves our facilities. When shipping terms or local laws do not allow for passage of risk of loss at shipping point, we defer recognizing revenue until risk of loss transfers to the customer.
	•	Leases
	Revenue from sales-type leases is recognized at the net present value of future lease payments. Revenue from operating leases is recognized over the lease period.
	•	Other
	We accrue for the estimated costs of systems’ warranty at the time of sale. We reduce revenue for estimated sales returns at the time of sale. Systems’ warranty costs are estimated based upon our historical experience and specific identification of systems’ requirements. Sales returns are estimated based upon our historical experience and specific identification of probable returns.
	Deferred Revenue
	Our deferred revenue consists primarily of deferred hardware and software maintenance and unearned license fees, which are recognized ratably over the contract term as either product or services revenue depending on the nature of the item, and deferred professional services, including education and training, which are recognized in services revenue as the services are provided.
	Shipping and Handling Costs
	Shipping and handling costs are classified in cost of product sales.
	Foreign Currency Translation
	The local currency is the functional currency of the majority of our subsidiaries. Assets and liabilities are translated into U.S. dollars at exchange rates in effect at the balance sheet date. Income and expense items are translated at daily rates.
	Gains and losses from foreign currency transactions are included in other income (expense), net, and consist of net losses of $2 million in 2013, $16 million in 2012 and $13 million in 2011. Foreign currency translation adjustments are included in other comprehensive income (loss).
	Derivatives
	We use derivatives to hedge foreign currency exposures related to foreign currency denominated assets and liabilities and forecasted revenue and expense transactions.
	We hedge our exposure in foreign currency denominated monetary assets and liabilities with foreign currency forward and option contracts. Since these derivatives hedge existing exposures that are denominated in foreign currencies, the contracts do not qualify for hedge accounting. Accordingly, these outstanding non-designated derivatives are recognized on the consolidated balance sheet at fair value and the changes in fair value from these contracts are recorded in other income (expense), net, in the consolidated income statements. These derivative contracts mature in less than one year.
	We also use foreign currency forward and option contracts to hedge our exposure on a portion of our forecasted revenue and expense transactions. These derivatives are designated as cash flow hedges. We did not have any derivatives designated as fair value hedges as of December 31, 2013. All outstanding cash flow hedges are recognized on the consolidated balance sheets at fair value with changes in their fair value recorded in accumulated other comprehensive income (loss) until the underlying forecasted transactions occur. To achieve hedge accounting, certain criteria must be met, which includes (i) ensuring at the inception of the hedge that formal documentation exists for both the hedging relationship and the entity’s risk management objective and strategy for undertaking the hedge, and (ii) at the inception of the hedge and on an ongoing basis, the hedging relationship is expected to be highly effective in achieving offsetting changes in fair value attributed to the hedged risk during the period that the hedge is designated. Further, an assessment of effectiveness is required at a minimum on a quarterly basis. Absent meeting these criteria, changes in fair value are recognized currently in other expense, net, in the consolidated income statements. Once the underlying forecasted transaction occurs, the gain or loss from the derivative designated as a hedge of the transaction is reclassified from accumulated other comprehensive income (loss) to the consolidated income statements, in the related revenue or expense caption, as appropriate. In the event the underlying forecasted transaction does not occur, the amount recorded in accumulated other comprehensive income (loss) will be reclassified to other income (expense), net, in the consolidated income statements in the then-current period. Any ineffective portion of the derivatives designated as cash flow hedges is recognized in current earnings. The ineffective portion of the derivatives includes gains or losses associated with differences between actual and forecasted amounts. Our cash flow hedges generally mature within six months or less. The notional amount of cash flow hedges outstanding as of December 31, 2013, 2012 and 2011 were $384 million, $201 million and $194 million, respectively.
	We do not engage in currency speculation. For purposes of presentation within the consolidated statement of cash flows, derivative gains and losses are presented within net cash provided by operating activities.
	In 2010, EMC entered into interest rate swap contracts with an aggregate notional amount of approximately $900 million. These swaps were designated as cash flow hedges of the semi-annual interest payments of the forecasted issuance of debt in 2011 when our $1.725 billion 1.75% convertible senior notes due 2011 (the "2011 Notes") were scheduled to become due. As such, the unrealized loss on these hedges was recognized in other comprehensive loss. In November 2011, we settled the swaps and replaced them with new interest rate swap contracts for the forecasted issuance of debt in 2012. In April 2012, we settled the swaps and replaced them with new interest rate swap contracts for the forecasted issuance of debt in 2012. Each of these new swaps was deemed as an effective hedge as the notional amounts and other terms matched the underlying hedged item. Losses on the interest rate swap contracts at the time of settlement of $141 million in November 2011 and $23 million in April 2012 were deferred as they were expected to be realized over the life of the new debt issued under the related interest rate swap contracts and recognized as a component of interest expense in the consolidated income statements.
	In June 2012, management changed its forecast date for the issuance of debt from December 31, 2012 to the first quarter of 2014. Consequently, hedge accounting effectively ceased as the terms of the swaps no longer matched the terms of the underlying hedged item resulting in changes in the fair value of the swaps being recorded in the consolidated income statement. The swaps were subsequently re-designated as cash flow hedges and achieved hedge accounting. The change in the forecasted timeframe for the issuance of debt resulted in certain previously anticipated hedge interest payments no longer being expected to occur within the window covered by the hedge designation. As a result, $40 million of accumulated realized losses in other comprehensive income related to these previously-anticipated interest payments was reclassified from other comprehensive income and recognized as a component of other income (expense), net in the 2012 consolidated income statements.
	In July 2012, we settled the interest rate swap contracts and did not replace them. Losses on the interest rate swap contracts at the time of settlement of $46 million were deferred as they were expected to be realized over the life of the new debt issued under the related interest rate swap contracts and recognized as a component of interest expense in the consolidated income statements.
	At December 31, 2013, we had $176 million of accumulated realized losses related to the settled swaps in accumulated other comprehensive income which will be realized during the life of our ten year senior notes issued in June 2013. These losses will be reclassified from other comprehensive income and recognized on a straight-line basis in the consolidated income statements as interest expense beginning in the third quarter of 2014.
	Our derivatives and their related activities are not material to our consolidated balance sheets or consolidated income statements.
	Cash and Cash Equivalents
	Cash and cash equivalents include highly liquid investments with a maturity of ninety days or less at the time of purchase. Cash equivalents consist primarily of money market securities, U.S. treasury bills, U.S. agency discount notes and commercial paper. Cash equivalents are stated at fair value. See Note F.
	Allowance for Doubtful Accounts
	We maintain an allowance for doubtful accounts for the estimated probable losses on uncollectible accounts and notes receivable. The allowance is based upon the creditworthiness of our customers, our historical experience, the age of the receivable and current market and economic conditions. Uncollectible amounts are charged against the allowance account. The allowance for doubtful accounts is maintained against both our current and non-current accounts and notes receivable balances. The balances in the allowance accounts at December 31, 2013 and 2012 were as follows (table in millions):
			December 31,
			2013		2012
	Current		$	62	$	68
	Non-current (included in other assets, net)		3		4
			$	65	$	72
	Investments
Unrealized gains and temporary loss positions on investments classified as available-for-sale are included within accumulated other comprehensive income (loss), net of any related tax effect. Upon realization, those amounts are reclassified from accumulated other comprehensive income (loss) to investment income. Realized gains and losses and other-than-temporary impairments are reflected in the consolidated income statement in investment income. For investments accounted for utilizing the fair value option, changes to fair value are recognized in the consolidated income statement in non-operating other income (expense), net.
Inventories
Inventories are stated at the lower of cost (first-in, first-out) or market, not in excess of net realizable value.
Property, Plant and Equipment
Property, plant and equipment are recorded at cost. Buildings under development are included in building construction in progress. Depreciation commences upon placing the asset in service and is recognized on a straight-line basis over the estimated useful lives of the assets, as follows:
Furniture and fixtures			5-10 years
Equipment and software			2-10 years
Improvements			5-31 years
Buildings			15-51 years
Upon retirement or disposition, the asset cost and related accumulated depreciation are removed with any gain or loss recognized in the consolidated income statements. Repair and maintenance costs, including planned maintenance, are expensed as incurred.
Research and Development and Capitalized Software Development Costs
Research and development ("R&D") costs are expensed as incurred. R&D costs include salaries and benefits, stock-based compensation, consultants, facilities related costs, material costs, depreciation and travel. Material software development costs incurred subsequent to establishing technological feasibility through the general release of the software products are capitalized. Technological feasibility is demonstrated by the completion of a detailed program design or working model, if no program design is completed. GAAP requires that annual amortization expense of the capitalized software development costs be the greater of the amounts computed using the ratio of gross revenue to a products’ total current and anticipated revenues, or the straight-line method over the products’ remaining estimated economic life. Capitalized costs are amortized over periods ranging from eighteen months to two years which represents the products’ estimated economic life.
Following the release of vSphere 5 and the comprehensive suite of cloud infrastructure technologies in the third quarter of 2011, VMware determined that its go-to-market strategy had changed from single solutions to product suite solutions. As a result of this change in strategy, and the related increased importance of interoperability between VMware’s products, the length of time between achieving technological feasibility and general release to customers significantly decreased. For future releases, VMware expects its products to be available for general release soon after technological feasibility has been established. Given that the majority of VMware’s product offerings are expected to be suites or to have key components that interoperate with VMware’s other product offerings, the costs incurred subsequent to achievement of technological feasibility were not material in 2013 and 2012, and are expected to be immaterial in future periods. As of December 31, 2013, all of VMware's previously capitalized software development costs had been fully amortized.
Unamortized software development costs were $762 million and $703 million at December 31, 2013 and 2012, respectively, and are included in other assets, net. Amortization expense was $427 million, $398 million and $380 million in 2013, 2012 and 2011, respectively. Amounts capitalized were $487 million, $432 million and $480 million in 2013, 2012 and 2011, respectively. The amounts capitalized include stock-based compensation which is not reflected in the consolidated statements of cash flows as it is a non-cash item.
Long-lived Assets
Purchased intangible assets, other than goodwill, are amortized over their estimated useful lives which range from one to nineteen years. Intangible assets include goodwill, developed technology, trademarks and tradenames, customer relationships and customer lists, software licenses, patents, leasehold interest, in-process research and development (“IPR&D”) and other intangible assets, which include backlog, non-competition agreements and non-solicitation agreements. The intangible assets are amortized based on the pattern in which the economic benefits of the intangible assets are estimated to be realized. Goodwill is not amortized and is carried at its historical cost.
We periodically review our long-lived assets for impairment. We initiate reviews for impairment whenever events or changes in business circumstances indicate that the carrying amount of the assets may not be fully recoverable or that the useful lives of these assets are no longer appropriate. Each impairment test, other than goodwill, is based on a comparison of the undiscounted cash flows to the recorded value of the asset. If an impairment is indicated, the asset is written down to its estimated fair value.
We test goodwill for impairment in the fourth quarter of each year or more frequently if events or changes in circumstances indicate that the asset might be impaired. The test is based on a comparison of the reporting unit’s book value to its estimated fair market value. We perform both qualitative and quantitative tests of our goodwill.
Investments in Joint Ventures
We make investments in joint ventures. For each joint venture investment we consider the facts and circumstances in order to determine whether it qualifies for cost, equity or fair value method accounting or whether it should be consolidated.
In 2009, Cisco and EMC formed VCE Company LLC (“VCE”), with investments from VMware and Intel. VCE, through Vblock infrastructure platforms, delivers an integrated IT offering that combines network, computing, storage, management, security and virtualization technologies for converged infrastructures and cloud based computing models.
We consider VCE a variable interest entity. Authoritative guidance related to variable interest entities states that the primary beneficiary of a variable interest entity must have both of the following characteristics: (a) the power to direct the activities of a variable interest entity that most significantly will impact the entity’s economic performance; and (b) the obligation to absorb losses that could be potentially significant to the variable interest entity or the right to receive benefits from the entity that could potentially be significant to the variable interest entity. Since the power to direct the activities of VCE which most significantly impact its economic performance are determined by its board of directors, which is comprised of equal representation of EMC and Cisco, and all significant decisions require the approval of the minority shareholders, we have determined we are not the primary beneficiary, and as such we account for the investment under the equity method with our portion of the gains and losses recognized in other expense, net in the consolidated income statements.
Advertising
Advertising costs are expensed as incurred. Advertising expense was $23 million, $30 million and $44 million in 2013, 2012 and 2011, respectively.
Legal Costs
Legal costs incurred in connection with loss contingencies are recognized when the costs are probable of occurrence and can be reasonably estimated.
Income Taxes
Deferred tax liabilities and assets are recognized for the expected future tax consequences of events that have been included in the financial statements or tax returns. Deferred tax liabilities and assets are determined based on the difference between the tax basis of assets and liabilities and their reported amounts using enacted tax rates in effect for the year in which the differences are expected to reverse. Tax credits are generally recognized as reductions of income tax provisions in the year in which the credits arise. The measurement of deferred tax assets is reduced by a valuation allowance if, based upon available evidence, it is more likely than not that some or all of the deferred tax assets will not be realized.
Accounting for uncertainty in income taxes recognized in the financial statements is in accordance with accounting authoritative guidance, which prescribes a two-step process to determine the amount of tax benefit to be recognized. First, the tax position must be evaluated to determine the likelihood that it will be sustained upon external examination. If the tax position is deemed “more-likely-than-not” to be sustained, the tax position is then assessed to determine the amount of benefit to recognize in the financial statements. The amount of the benefit that may be recognized is the largest amount that has a greater than 50 percent likelihood of being realized upon ultimate settlement.
We do not provide for a U.S. income tax liability on undistributed earnings of our foreign subsidiaries. The earnings of non-U.S. subsidiaries, which reflect full provision for non-U.S. income taxes, are currently indefinitely reinvested in non-U.S. operations or are expected to be remitted substantially free of additional tax.
Sales Taxes
Sales and other taxes collected from customers and subsequently remitted to government authorities are recorded as cash or accounts receivable with a corresponding offset recorded to sales taxes payable. These balances are removed from the consolidated balance sheet as cash is collected from the customers and remitted to the tax authority.
Earnings Per Share
Basic net income per share is computed using the weighted-average number of shares of our common stock outstanding during the period. Diluted net income per share is computed using the weighted-average number of common and dilutive common equivalent shares outstanding during the period. Common equivalent shares consist of stock options, unvested restricted stock and restricted stock units, the shares issuable under our 2011 Notes and our 2013 Notes and the associated warrants. See Note E for further information regarding the 2011 Notes and 2013 Notes and the associated warrants and Note O for further information regarding the calculation of diluted net income per weighted-average share. Additionally, for purposes of calculating diluted net income per common share, net income is adjusted for the difference between VMware’s reported diluted and basic earnings per share, if any, multiplied by the number of shares of VMware held by EMC.
Retirement Benefits
Pension cost for our domestic defined benefit pension plan is funded to the extent that the current pension cost is deductible for U.S. Federal tax purposes and to comply with the Employee Retirement Income Security Act and the General Agreement on Tariff and Trade Bureau additional minimum funding requirements. Net pension cost for our international defined benefit pension plans are generally funded as accrued.
Concentrations of Risks
Financial instruments that potentially subject us to concentration of credit risk consist principally of bank deposits, money market investments, short- and long-term investments, accounts and notes receivable, and foreign currency exchange contracts. Deposits held with banks in the United States may exceed the amount of FDIC insurance provided on such deposits. Deposits held with banks outside the United States generally do not benefit from FDIC insurance. The majority of our day-to-day banking operations globally are maintained with Citibank. We believe that Citibank’s position as a primary clearing bank, coupled with the substantial monitoring of their daily liquidity, both by their internal processes and by the Federal Reserve and the FDIC, mitigate some of our risk.
Our money market investments are placed with money market funds that are 2a-7 qualified. Rule 2a-7, adopted by the United States Securities and Exchange Commission (the "SEC") under the Investment Company Act of 1940, establishes strict standards for quality, diversity and maturity, the objective of which is to maintain a constant net asset value of a dollar. We limit our investments in money market funds to those that are primarily associated with large, money center financial institutions and limit our exposure to Prime funds. Our short- and long-term investments are invested primarily in investment grade securities, and we limit the amount of our investment in any single issuer.
We provide credit to customers in the normal course of business. Credit is extended to new customers based on checks of credit references, credit scores and industry reputation. Credit is extended to existing customers based on prior payment history and demonstrated financial stability. The credit risk associated with accounts and notes receivables is generally limited due to the large number of customers and their broad dispersion over many different industries and geographic areas. We establish an allowance for the estimated uncollectible portion of our accounts and notes receivable. We customarily sell the notes receivable we derive from our leasing activity. Generally, we do not retain any recourse on the sale of these notes. Our sales are generally dispersed among a large number of customers, minimizing the reliance on any particular customer or group of customers.
The counterparties to our foreign currency exchange contracts consist of a number of major financial institutions. In addition to limiting the amount of contracts we enter into with any one party, we monitor the credit quality of the counterparties on an ongoing basis.
We purchase or license many sophisticated components and products from one or a limited number of qualified suppliers. If any of our suppliers were to cancel or materially change contracts or commitments with us or fail to meet the quality or delivery requirements needed to satisfy customer orders for our products, we could lose customer orders. We attempt to minimize this risk by finding alternative suppliers or maintaining adequate inventory levels to meet our forecasted needs.
Accounting for Stock-Based Compensation
We have selected the Black-Scholes option-pricing model to determine the fair value of our stock option awards. For stock options, restricted stock and restricted stock units, we recognize compensation cost on a straight-line basis over the awards’ vesting periods for those awards which contain only a service vesting feature. For awards with a performance condition vesting feature, when achievement of the performance condition is deemed probable, we recognize compensation cost on a graded-vesting basis over the awards’ expected vesting periods.
Reclassifications
Certain prior year amounts have been reclassified to conform with the current year's presentation. During the second quarter of 2013, EMC and VMware combined certain operations to form Pivotal, with a cash investment from General Electric Company ("GE"). Pivotal is considered a separate reportable segment. We recast the segment disclosures for the prior financial reporting periods to separately present the operations of the Pivotal segment. None of the segment reclassifications impact EMC's previously reported consolidated financial statements. See Note S for further discussion of the segment reclassifications.
Recent Accounting Pronouncements
In July 2013, the Financial Accounting Standards Board ("FASB") issued new accounting guidance on the presentation of unrecognized tax benefits. This new guidance requires an entity to present an unrecognized tax benefit, or a portion of an unrecognized tax benefit, as a reduction to a deferred tax asset when a net operating loss carryforward, a similar tax loss or a tax credit carryforward exists, with limited exceptions. This new guidance is effective for the periods beginning after December 15, 2013, and should be applied prospectively with retroactive application permitted.  We do not expect it to have a material impact on our consolidated financial position, results of operations or cash flows.
In March 2013, the FASB issued guidance that requires a parent company to release any related cumulative translation adjustment into net income only if the sale or transfer results in the complete or substantially complete liquidation of the foreign entity in which the subsidiary or group of assets had resided. This new guidance is effective beginning after December 15, 2013.  We do not anticipate that the adoption of this new guidance will have a material impact on our consolidated financial position, results of operations or cash flows.

Noncontrolling_Interests

Non-controlling Interests	12 Months Ended
	Dec. 31, 2013
Noncontrolling Interest [Abstract]	'
Non-controlling Interests	'
	Non-controlling Interest in VMware, Inc.
	The non-controlling interests’ share of equity in VMware is reflected as a component of the non-controlling interests in the accompanying consolidated balance sheets and was $1,380 million and $1,167 million as of December 31, 2013 and 2012, respectively. At December 31, 2013, EMC held approximately 97% of the combined voting power of VMware’s outstanding common stock and approximately 80% of the economic interest in VMware.
	The effect of changes in our ownership interest in VMware on our equity was as follows (table in millions):
		For the Year Ended
		December 31,			December 31,
		2013			2012
	Net income attributable to EMC Corporation	$	2,889		$	2,733
	Transfers (to) from the non-controlling interest in VMware, Inc.:
	Increase in EMC Corporation’s additional paid-in-capital for VMware’s equity issuances	92			128
	Decrease in EMC Corporation’s additional paid-in-capital for VMware’s other equity activity	(565		)	(564		)
	Net transfers (to) from non-controlling interest	(473		)	(436		)
	Change from net income attributable to EMC Corporation and transfers from the non-controlling interest in VMware, Inc.	$	2,416		$	2,297
	The non-controlling interests' share of equity in Pivotal is reflected as a component of the non-controlling interests in the accompanying consolidated balance sheets as $105 million and $0 million at December 31, 2013 and 2012, respectively. At December 31, 2013, EMC consolidated held approximately 84% of the economic interest in Pivotal. GE's interest in Pivotal is in the form of a preferred equity instrument. Consequently, there is no net income attributable to non-controlling interest related to Pivotal on the consolidated income statements. Additionally, due to the terms of the preferred instrument, GE's non-controlling interest on the consolidated balance sheets is generally not impacted by Pivotal's equity related activity. The preferred equity instrument is convertible into common shares at GE’s election at any time.

Acquisitions

Acquisitions	12 Months Ended
	Dec. 31, 2013
Business Combinations [Abstract]	'
Acquisitions	'
	Acquisitions
	2013 Acquisitions
	During the year ended December 31, 2013, EMC acquired five companies. Complementing the Information Storage segment, we acquired substantially all of the assets of Adaptivity, Inc., a provider of software solutions that automate and accelerate enterprise IT migration to the cloud and all of the outstanding capital stock of ScaleIO, a provider of server-side storage software. A member of our board of directors is an investor in a limited partnership which held an equity interest in ScaleIO.  The director did not participate in any votes of the board of directors or any committee thereof approving the acquisition, and the terms of the acquisition were negotiated at arms' length.
	Complementing the Information Intelligence Group segment, we also acquired all of the outstanding capital stock of Sitrof Technologies, a document management consultancy provider. Complementing the RSA Information Security segment, we acquired all of the outstanding common stock of Aveksa, Inc., a provider of cloud-based identity and access management solutions and PassBan Corporation, a developer of mobile and cloud-based multi-factor authentication technology.
	Additionally, during the year ended December 31, 2013, VMware acquired all of the outstanding common stock of two companies including Virsto Software, a provider of software that optimizes storage performance and utilization in virtual environments and Desktone, Inc., a provider of desktop-as-a-service for delivering Windows desktops and applications as a cloud service.
	Complementing the Pivotal segment, Pivotal acquired all of the outstanding common stock of Xtreme Labs, a provider of mobile strategy and product development during the year ended December 31, 2013.
	The aggregate consideration for these eight acquisitions was $771 million, which consisted of $770 million of cash consideration, net of cash acquired and $1 million for the fair value of our stock options granted in exchange for the acquirees' stock options. The consideration paid was allocated to the fair value of the assets acquired and liabilities assumed based on estimated fair values as of the respective acquisition dates. The aggregate allocation to goodwill, intangibles and net liabilities was approximately $596 million, $182 million and $8 million, respectively. Most of our intangible assets are being amortized based upon the pattern in which the economic benefits of the intangible assets are estimated to be utilized and the remainder are amortized on a straight-line basis. The results of these acquisitions have been included in the consolidated financial statements from the date of purchase. Pro forma results of operations have not been presented as the results of the acquired companies were not material, individually or in aggregate, to our consolidated results of operations for the years ended December 31, 2013 or 2012.
	The fair value of our stock options for all of the aforementioned acquisitions in 2013 was estimated using the following weighted-average assumptions:
	Expected term (in years)	1.8
	Expected volatility	26.4	%
	Risk-free interest rate	0.3	%
	Dividend yield	1.5	%
	The following represents the aggregate allocation of the purchase price for all of the aforementioned acquisitions to intangible assets (table in millions):
	Developed technology (weighted-average useful life of 5 years)	$	138
	Customer relationships (weighted-average useful life of 4 years)	34
	IPR&D	10
	Total intangible assets	$	182
	2012 Acquisitions
	Acquisition of Nicira
	On August 24, 2012, VMware acquired all of the outstanding capital stock of Nicira, a developer of software-defined networking solutions. This acquisition expanded VMware’s product portfolio to provide a suite of software-defined networking capabilities.
	The aggregate consideration paid for Nicira was $1,100 million, net of cash acquired, including cash of $1,083 million and the fair value of assumed equity attributed to pre-combination services of $17 million. Additionally, VMware assumed all of Nicira’s unvested stock options and restricted stock outstanding at the completion of the acquisition. The assumed unvested stock options converted into 1 million stock options to purchase VMware Class A common stock. The assumed restricted stock converted into 1 million shares of restricted VMware Class A common stock.
	The weighted-average acquisition-date fair value of the stock options was determined using the Black-Scholes option pricing model with the following weighted-average assumptions: (i) market price of $92.21 per share, which was the closing price of VMware’s Class A common stock on the acquisition date; (ii) expected term of 2.7 years; (iii) risk-free interest rate of 0.3%; (iv) annualized expected volatility of 35.7%; and (v) no dividend yield. The fair value of the restricted stock was based on the acquisition-date closing price of $92.21 per share for VMware’s Class A common stock.
	The purchase price has been allocated to the assets acquired and the liabilities assumed based on estimated fair values as of the acquisition date. The following table summarizes the allocation of the Nicira purchase price, adjusted in the fourth quarter of 2012 for a reassessment of unrecognized tax benefit (table in millions):
	Intangible assets:
	Purchased technology (weighted-average useful life of 7 years)	$	266
	Trademarks and tradenames (weighted-average useful life of 10 years)	20
	In-process research and development	49
	Total intangible assets	335
	Goodwill	893
	Deferred tax liabilities, net	(77		)
	Income tax payable	(50		)
	Other assumed liabilities, net of acquired assets	(1		)
	Total purchase price	$	1,100
	In-process Research and Development
	In connection with the Nicira acquisition, we acquired one IPR&D project which was completed by the end of 2012 and is being amortized over its estimated useful life of 8 years.
	Other 2012 Acquisitions
	During the year ended December 31, 2012, EMC acquired eleven companies. We acquired all of the outstanding capital stock of Pivotal Labs, a provider of services and technology to build Big Data applications; Likewise Software, a provider of technology for managing cross-platform access to data files and software for managing unstructured data; XtremIO, a provider of Flash enterprise storage systems; Watch4Net, a provider of enterprise and carrier-class performance management software; Tiburon Technologies, a provider of support and modernization services for legacy database management systems; and iWave Software, a provider of storage and cloud automation software solutions. These acquisitions complemented and expanded our Information Storage segment. We also acquired all of the outstanding capital stock of Syncplicity, a provider of cloud-based synch and share file management and Trinity Technologies, a provider of enterprise content management consulting and development services which complemented and expanded our Information Intelligence Group segment. We acquired Silicium Security, a provider of enterprise malware detection solutions, More VRP Resources, a provider of database performance and monitoring software and Silver Tail Systems, a provider of web fraud detection and security software which complemented and expanded our RSA Information Security segment.
	Additionally, during the year ended December 31, 2012, VMware acquired five companies, in addition to the acquisition of Nicira, which were not material either individually or in the aggregate. In connection with our acquisitions, we had adjustments to the fair value of previously held interests in XtremIO which resulted in a gain of $32 million which was recognized in other income (expense), net in the second quarter of 2012.
	The aggregate consideration for these sixteen acquisitions, excluding Nicira, was $1,060 million which consisted of $1,053 million of cash consideration, net of cash acquired and $7 million for the fair value of our stock options granted in exchange for the acquirees’ stock options. The consideration paid was allocated to the fair value of the assets acquired and liabilities assumed based on estimated fair values as of the respective acquisition dates.
	The aggregate allocation to goodwill, intangibles and net liabilities, excluding Nicira, was approximately $819 million, $311 million and $70 million, respectively. The intangible assets are being amortized based upon the pattern in which the economic benefits of the intangible assets are being utilized. The results of these acquisitions have been included in the consolidated financial statements from the date of purchase.
	The fair value of our stock options for all of the aforementioned acquisitions, excluding Nicira, in 2012 was estimated assuming no expected dividends and the following weighted-average assumptions:
	Expected term (in years)	1.9
	Expected volatility	31.6	%
	Risk-free interest rate	0.3	%
	The following represents the aggregate allocation of the purchase price for all of the aforementioned acquisitions, excluding Nicira, to intangible assets (table in millions):
	Developed technology (weighted-average useful life of 4.8 years)	$	255
	Customer relationships (weighted-average useful life of 6.1 years)	54
	Trademarks and tradenames (weighted-average useful life of 3.4 years)	2
	Total intangible assets	$	311
	The total weighted-average amortization period for the intangible assets is 5.0 years. The intangible assets are being amortized based upon the pattern in which the economic benefits of the intangible assets are being utilized.
	2011 Acquisitions
	During the year ended December 31, 2011, we acquired all of the capital stock of NetWitness Corporation, a privately-held provider of network security analysis solutions. This acquisition complemented and expanded our RSA Information Security segment. Additionally, during the year ended December 31, 2011, VMware acquired six companies. The aggregate consideration for these seven acquisitions was $540 million which consisted of $537 million of cash consideration, net of cash acquired and $3 million for the fair value of our stock options granted in exchange for the acquirees’ stock options. The consideration paid was allocated to the fair value of the assets acquired and liabilities assumed based on estimated fair values as of the respective acquisition dates. The allocation to goodwill, intangibles and net assets was approximately $376 million, $157 million and $7 million, respectively. The results of these acquisitions have been included in the consolidated financial statements from the respective dates of purchase.
	The following represents the aggregate allocation of the purchase price for all the aforementioned acquisitions to intangible assets (table in millions):
	Developed technology (weighted-average useful life of 3.2 years)	$	98
	Customer relationships (weighted-average useful life of 4.0 years)	58
	Trademarks and tradenames (weighted-average useful life of 2.6 years)	1
	Total intangible assets	$	157
	The total weighted-average amortization period for the intangible assets is 3.5 years. The intangible assets are being amortized based upon the pattern in which the economic benefits of the intangible assets are being utilized.

Intangibles_and_Goodwill

Intangibles and Goodwill	12 Months Ended
	Dec. 31, 2013
Goodwill and Intangible Assets Disclosure [Abstract]	'
Intangibles and Goodwill	'
	Intangibles and Goodwill
	Intangible Assets
	Intangible assets, excluding goodwill, as of December 31, 2013 and 2012 consist of (tables in millions):
		December 31, 2013
		Gross Carrying			Accumulated			Net Book Value
		Amount			Amortization
	Purchased technology	$	2,356		$	(1,429	)	$	927
	Patents	225			(102		)	123
	Software licenses	101			(90		)	11
	Trademarks and tradenames	171			(118		)	53
	Customer relationships and customer lists	1,386			(855		)	531
	Leasehold interest	145			(11		)	134
	Other	28			(27		)	1
	Total intangible assets, excluding goodwill	$	4,412		$	(2,632	)	$	1,780
		December 31, 2012
		Gross Carrying			Accumulated			Net Book Value
		Amount			Amortization
	Purchased technology	$	2,233		$	(1,207	)	$	1,026
	Patents	225			(87		)	138
	Software licenses	96			(88		)	8
	Trademarks and tradenames	173			(102		)	71
	Customer relationships and customer lists	1,378			(724		)	654
	Leasehold interest	145			(7		)	138
	Other	26			(26		)	—
	Total intangible assets, excluding goodwill	$	4,276		$	(2,241	)	$	2,035
	In the year ended December 31, 2011, we, along with three other technology companies, acquired specific patents from Novell, Inc. for $450 million, of which we paid $113 million. We assigned our portion of the patent portfolio an average life of 10 years, based on the average contractual term remaining on the patents we acquired. The cash outflow was included in purchases of strategic and other related investments in the investing activities section of the consolidated statements of cash flows.
	In the year ended December 31, 2011, VMware purchased all of the right, title and interest in a ground lease covering the property and improvements located adjacent to VMware’s Palo Alto, California campus for $225 million. The gross amount classified to property, plant and equipment, net was $74 million. The remaining $151 million of the $225 million purchase price was for the fair value of the ground lease and the right to develop additional square footage on the parcel. The long-term portion of $147 million was recorded to intangible assets, net with the remainder recorded to other current assets on the consolidated balance sheet. Concurrent with the closing of the transaction, VMware entered into an amended and restated ground lease for the related property. The buildings and site improvements will be depreciated from the date they are placed into service through the term of the amended and restated ground lease, and intangible assets will be amortized through 2046.
	Amortization expense on intangibles was $389 million, $365 million and $342 million in 2013, 2012 and 2011, respectively. As of December 31, 2013, amortization expense on intangible assets for the next five years is expected to be as follows (table in millions):
	2014	$	360
	2015	316
	2016	260
	2017	210
	2018	179
	Total	$	1,325
	Goodwill
	Changes in the carrying amount of goodwill, net, on a consolidated basis and by segment, for the years ended December 31, 2013 and 2012 consist of the following (tables in millions):
		Year Ended December 31, 2013
		Information			Information			RSA			Pivotal		VMware			Total
		Storage			Intelligence			Information					Virtual
					Group			Security					Infrastructure
	Balance, beginning of the year	$	7,442		$	1,484		$	2,022		$	—	$	2,892		$	13,840
	Goodwill resulting from acquisitions	145			1			181			37		233			597
	Finalization of purchase price allocations and other, net	11			2			—			—		(26		)	(13		)
	Goodwill transferred in formation of Pivotal	(112		)	—			—			140		(28		)	—
	Balance, end of the year	$	7,486		$	1,487		$	2,203		$	177	$	3,071		$	14,424
		Year Ended December 31, 2012
		Information			Information			RSA			Pivotal		VMware			Total
		Storage			Intelligence			Information					Virtual
					Group			Security					Infrastructure
	Balance, beginning of the year	$	7,034		$	1,469		$	1,849		$	—	$	1,803		$	12,155
	Goodwill resulting from acquisitions	438			15			179			—		1,092			1,724
	Finalization of purchase price allocations and other, net	(1		)	—			(6		)	—		(3		)	(10		)
	Goodwill de-recognized in divestiture of business	(29		)	—			—			—		—			(29		)
	Balance, end of the year	$	7,442		$	1,484		$	2,022		$	—	$	2,892		$	13,840
	During the second quarter of 2013, EMC and VMware formed Pivotal, with an investment from GE. As Pivotal is considered a separate reportable segment, the transfer of goodwill from the Information Storage and VMware Virtual Infrastructure segments to the newly formed Pivotal segment is shown above for 2013. The amount of transferred goodwill was determined using the relative fair value method. See Note S for further discussion of the segment disclosures.
	Valuation of Goodwill and Intangibles
	We perform an assessment of the recoverability of goodwill, at least annually, in the fourth quarter of each year. Our assessment is performed at the reporting unit level which, for certain of our operating segments, is one step below our reporting segment level. We employ both qualitative and quantitative tests of our goodwill. For some of our reporting units, we performed a qualitative assessment on goodwill to determine whether a quantitative assessment was necessary and determined there were no indicators of potential impairment. For other reporting units we evaluated goodwill using a quantitative model. For all of our goodwill assessments we determined that there was sufficient market value above the carrying value of those reporting units so that we would not expect any near term changes in the operating results that would trigger an impairment.
	The determination of relevant comparable industry companies impacts our assessment of fair value. Should the operating performance of our reporting units change in comparison to these companies or should the valuation of these companies change, this could impact our assessment of the fair value of the reporting units. Our discounted cash flow analyses factor in assumptions on revenue and expense growth rates. These estimates are based upon our historical experience and projections of future activity, factoring in customer demand, changes in technology and a cost structure necessary to achieve the related revenues. Additionally, these discounted cash flow analyses factor in expected amounts of working capital and weighted average cost of capital. Changes in judgments on any of these factors could materially impact the value of the reporting unit. There was no impairment in 2013, 2012 or 2011.
	Other intangible assets are evaluated based upon the expected period the asset will be utilized, forecasted cash flows, changes in technology and customer demand. Changes in judgments on any of these factors could materially impact the value of the assets.

Debt

Debt	12 Months Ended
	Dec. 31, 2013
Debt Disclosure [Abstract]	'
Convertible Debt	'
	E.  Debt
	Long-Term Debt
	In June 2013, we issued $5.5 billion aggregate principal amount of senior notes (collectively, the "Notes") which pay a fixed rate of interest semi-annually in arrears. The first interest payment occurred on December 2, 2013. The proceeds from the Notes have been used to satisfy the cash payment obligation of the converted 2013 Notes as well as for general corporate purposes including stock repurchases, dividend payments, working capital needs and other business opportunities. The Notes of each series are senior, unsecured obligations of EMC and are not convertible or exchangeable. Unless previously purchased and canceled, we will repay the Notes of each series at 100% of the principal amount, together with accrued and unpaid interest thereon, at maturity. However, EMC has the right to redeem any or all of the Notes at specified redemption prices. As of December 31, 2013, we were in compliance with all debt covenants, which are customary in nature.
	Our long-term debt as of December 31, 2013 was as follows (dollars in millions):
	Senior Notes		Issued at Discount		Carrying
			to Par		Value
	$2.5 billion 1.875% Notes due 2018		99.943	%	$	2,499
	$2.0 billion 2.650% Notes due 2020		99.76	%	1,996
	$1.0 billion 3.375% Notes due 2023		99.925	%	999
					$	5,494
	The unamortized discount on the Notes consists of $6 million, which will be fully amortized by June 1, 2023. The effective interest rate on the Notes was 2.54% for the year ended December 31, 2013.
	Convertible Debt
	In November 2006, we issued our $1.725 billion 1.75% convertible senior notes due 2011 (the "2011 Notes") and our $1.725 billion 1.75% convertible senior notes due 2013 (the "2013 Notes") for total gross proceeds of $3.5 billion. The 2013 Notes are senior unsecured obligations and rank equally with all other existing and future senior unsecured debt.
	The 2011 Notes matured and a majority of the noteholders exercised their right to convert the outstanding 2011 Notes at the end of 2011. Pursuant to the settlement terms, the majority of the converted 2011 Notes were not settled until January 9, 2012. At that time, we paid the noteholders $1.7 billion in cash for the outstanding principal and 30 million shares for the $661 million in excess of the conversion value over the principal amount, as prescribed by the terms of the 2011 Notes.
	As of December 31, 2013, the 2013 Notes had matured and a majority of the noteholders exercised their rights to convert the outstanding 2013 Notes. These converted notes were classified as notes converted and payable on the consolidated balance sheet at December 31, 2013. Due to the settlement terms, the majority of the converted 2013 Notes were not settled until January 7, 2014. At that time, we paid the noteholders $1.7 billion in cash for the outstanding principal and 35 million shares for the $858 million excess of the conversion value over the principal amount, as prescribed in the terms of the 2013 Notes.
	With respect to the conversion value in excess of the principal amount of the 2013 Notes converted, we have elected to settle the excess with shares of our common stock based on a daily conversion value, determined in accordance with the indenture, calculated on a proportionate basis for each day of the relevant 20-day observation period. The actual conversion rate for the 2013 Notes was 62.6978 shares of our common stock per one thousand dollars of principal amount of 2013 Notes, which represents a 26.5% conversion premium from the date the 2013 Notes were issued and is equivalent to a conversion price of approximately $15.95 per share of our common stock.
	The 2013 Notes paid interest in cash at a rate of 1.75% semi-annually in arrears on December 1 and June 1 of each year. The effective interest rate on the 2011 Notes and 2013 Notes was 5.6% for both the year ended December 31, 2013 and 2012.
	The following table represents the key components of our interest expense on convertible debt (table in millions):
		For the Twelve Months Ended
		2013			2012		2011
	Contractual interest expense on the coupon	$	27		$	30	$	58
	Amortization of the discount component recognized as interest expense	58			61		116
	Total interest expense on the convertible debt	$	85		$	91	$	174
	In connection with the issuance of the 2011 Notes and 2013 Notes, we entered into separate convertible note hedge transactions with respect to our common stock (the “Purchased Options”). The Purchased Options allow us to receive shares of our common stock and/or cash related to the excess conversion value that we would pay to the holders of the 2011 Notes and 2013 Notes upon conversion. The Purchased Options will cover, subject to customary anti-dilution adjustments, approximately 215 million shares of our common stock. We paid an aggregate amount of $669 million of the proceeds from the sale of the 2011 Notes and 2013 Notes for the Purchased Options that was recorded as additional paid-in-capital in shareholders’ equity. In the fourth quarter of 2011, we exercised 107 million of the Purchased Options in conjunction with the planned settlements of the 2011 Notes, and we received 30 million shares of net settlement on January 9, 2012, representing the excess conversion value of the options. In 2013, we exercised the remaining 107 million of the Purchased Options in conjunction with the planned settlements of the 2013 Notes, and we received 35 million shares of net settlement on January 7, 2014, representing the excess conversion value of the options.
	We also entered into separate transactions in which we sold warrants to acquire, subject to customary anti-dilution adjustments, approximately 215 million shares of our common stock at an exercise price of approximately $19.55 per share of our common stock. We received aggregate proceeds of $391 million from the sale of the associated warrants. Upon exercise, the value of the warrants is required to be settled in shares. Half of the associated warrants were exercised between February 15, 2012 and March 14, 2012 and the remaining half of the associated warrants have expiration dates between February 18, 2014 and March 17, 2014. During the first quarter of 2012, the exercised warrants were settled with 32 million shares of our common stock. Beginning February 18, 2014, a percentage of the remaining 108 million warrants become exercisable each day over the course of the settlement period through March 17, 2014. These warrants will be settled with shares of our common stock.
	The Purchased Options and associated warrants have generally had the effect of increasing the conversion price of the 2013 Notes to approximately $19.31 per share of our common stock, representing an approximate 53% conversion premium based on the closing price of $12.61 per share of our common stock on November 13, 2006, which was the issuance date of the 2013 Notes.
	Interest Rate Swap Contracts
	In 2010, EMC entered into interest rate swap contracts with an aggregate notional amount of approximately $900 million. These swaps were designated as cash flow hedges of the semi-annual interest payments of the forecasted issuance of debt in 2011 when our 2011 Notes were scheduled to become due. As such, the unrealized loss on these hedges was recognized in other comprehensive loss. In November 2011, we settled the swaps and replaced them with new interest rate swap contracts for the forecasted issuance of debt in 2012. In April 2012, we settled the swaps and replaced them with new interest rate swap contracts for the forecasted issuance of debt in 2012. Each of these new swaps was deemed as an effective hedge as the notional amounts and other terms matched the underlying hedged item. Losses on the interest rate swap contracts at the time of settlement of $141 million in November 2011 and $23 million in April 2012 were deferred as they were expected to be realized over the life of the new debt issued under the related interest rate swap contracts and recognized as a component of interest expense in the consolidated income statements.
	In June 2012, management changed its forecast date for the issuance of debt from December 31, 2012 to the first quarter of 2014. Consequently, hedge accounting effectively ceased as the terms of the swaps no longer matched the terms of the underlying hedged item resulting in changes in the fair value of the swaps being recorded in the consolidated income statement. The swaps were subsequently re-designated as cash flow hedges and achieved hedge accounting. The change in the forecasted timeframe for the issuance of debt resulted in certain previously-anticipated hedge interest payments no longer being expected to occur within the window covered by the hedge designation. As a result, $40 million of accumulated realized losses in other comprehensive income related to these previously-anticipated interest payments were reclassified from other comprehensive income and recognized in the 2012 consolidated income statements.
	In July 2012, we settled the interest rate swap contracts and did not replace them. Losses on the interest rate swap contracts at the time of settlement of $46 million were deferred as they were expected to be realized over the life of the new debt issued under the related interest rate swap contracts and recognized as a component of interest expense in the consolidated income statements.
	At December 31, 2013, we had $176 million of accumulated realized losses related to the settled swaps in accumulated other comprehensive income which will be realized during the life of our ten year Notes. These losses will be reclassified from other comprehensive income and recognized on a straight-line basis in the consolidated income statements as interest expense beginning in the third quarter of 2014.

Fair_Value_of_Financial_Assets

Fair Value of Financial Assets and Liabilities	12 Months Ended
	Dec. 31, 2013
Fair Value Disclosures [Abstract]	'
Fair Value of Financial Assets and Liabilities	'
	Fair Value of Financial Assets and Liabilities
	Our fixed income and equity investments are classified as available for sale and recorded at their fair market values. We determine fair value using the following hierarchy:
	•	Level 1 – Quoted prices in active markets for identical assets or liabilities.
	•	Level 2 – Inputs other than Level 1 that are observable, either directly or indirectly, such as quoted prices for similar assets or liabilities; quoted prices in markets that are not active; or other inputs that are observable or can be corroborated by observable market data for substantially the full term of the assets or liabilities.
	•	Level 3 – Unobservable inputs that are supported by little or no market activity and that are significant to the fair value of the assets or liabilities.
	Most of our fixed income securities are classified as Level 2, with the exception of some of our U.S. government and agency obligations which are classified as Level 1, and all of our auction rate securities, which are classified as Level 3. In addition, our investments in publicly traded equity securities are classified as Level 1 and our strategic investments held at cost are classified as Level 3. At December 31, 2013 and 2012, the vast majority of our Level 2 securities were priced by pricing vendors. These pricing vendors utilize the most recent observable market information in pricing these securities or, if specific prices are not available for these securities, use other observable inputs like market transactions involving identical or comparable securities. In the event observable inputs are not available, we assess other factors to determine the security’s market value, including broker quotes or model valuations. Each month, we perform independent price verifications of all of our fixed income holdings. In the event a price fails a pre-established tolerance check, it is researched so that we can assess the cause of the variance to determine what we believe is the appropriate fair market value.
	In general, investments with remaining effective maturities of 12 months or less from the balance sheet date are classified as short-term investments. Investments with remaining effective maturities of more than 12 months from the balance sheet date are classified as long-term investments. Our publicly traded equity securities are classified as long-term investments and our strategic investments held at cost are classified as other assets. As a result of the lack of liquidity for auction rate securities, we have classified these as long-term investments as of December 31, 2013 and 2012. At December 31, 2013 and 2012, all of our short- and long-term investments, excluding auction rate securities, were recognized at fair value, which was determined based upon observable inputs from our pricing vendors for identical or similar assets. At December 31, 2013 and 2012, auction rate securities were valued using a discounted cash flow model.
	The following tables summarize the composition of our short- and long-term investments at December 31, 2013 and 2012 (tables in millions):
		December 31, 2013
		Amortized			Unrealized			Unrealized			Aggregate
		Cost			Gains			(Losses)			Fair Value
	U.S. government and agency obligations	$	3,726		$	4		$	(3	)	$	3,727
	U.S. corporate debt securities	2,260			8			(2		)	2,266
	High yield corporate debt securities	515			19			(3		)	531
	Asset-backed securities	—			—			—			—
	Municipal obligations	860			3			—			863
	Auction rate securities	63			—			(3		)	60
	Foreign debt securities	2,152			6			(3		)	2,155
	Total fixed income securities	9,576			40			(14		)	9,602
	Publicly traded equity securities	72			24			(1		)	95
	Total	$	9,648		$	64		$	(15	)	$	9,697
	We held approximately $2,155 million in foreign debt securities at December 31, 2013. These securities have an average credit rating of A+, and approximately 4% of these securities are deemed sovereign debt with an average credit rating of AAA. None of the securities deemed sovereign debt are from Greece, Italy, Ireland, Portugal, Spain or Cyprus.
		December 31, 2012
		Amortized			Unrealized			Unrealized			Aggregate
		Cost			Gains			(Losses)			Fair Value
	U.S. government and agency obligations	$	2,191		$	10		$	(1	)	$	2,200
	U.S. corporate debt securities	1,480			10			—			1,490
	High yield corporate debt securities	486			34			(1		)	519
	Asset-backed securities	2			—			—			2
	Municipal obligations	1,032			3			—			1,035
	Auction rate securities	74			—			(4		)	70
	Foreign debt securities	1,270			9			—			1,279
	Total fixed income securities	6,535			66			(6		)	6,595
	Publicly traded equity securities	47			41			(1		)	87
	Total	$	6,582		$	107		$	(7	)	$	6,682
	The following tables represent our fair value hierarchy for our financial assets and liabilities measured at fair value as of December 31, 2013 and 2012 (in millions):
		December 31, 2013
		Level 1			Level 2			Level 3			Total
	Cash	$	1,725		$	—		$	—		$	1,725
	Cash equivalents	5,674			492			—			6,166
	U.S. government and agency obligations	1,797			1,930			—			3,727
	U.S. corporate debt securities	—			2,266			—			2,266
	High yield corporate debt securities	—			531			—			531
	Municipal obligations	—			863			—			863
	Auction rate securities	—			—			60			60
	Foreign debt securities	—			2,155			—			2,155
	Publicly traded equity securities	95			—			—			95
	Total cash and investments	$	9,291		$	8,237		$	60		$	17,588
	Other items:
	Strategic investments held at cost	$	—		$	—		$	379		$	379
	Investment in joint venture	—			—			35			35
	Long-term debt carried at discounted issuance cost	—			(5,419		)	—			(5,419		)
	Foreign exchange derivative assets	—			31			—			31
	Foreign exchange derivative liabilities	—			(20		)	—			(20		)
	Commodity derivative assets	—			4			—			4
		December 31, 2012
		Level 1			Level 2			Level 3			Total
	Cash	$	1,454		$	—		$	—		$	1,454
	Cash equivalents	2,898			362			—			3,260
	U.S. government and agency obligations	1,327			873			—			2,200
	U.S. corporate debt securities	—			1,490			—			1,490
	High yield corporate debt securities	—			519			—			519
	Asset-backed securities	—			2			—			2
Municipal obligations	—			1,035			—			1,035
Auction rate securities	—			—			70			70
Foreign debt securities	—			1,279			—			1,279
Publicly traded equity securities	87			—			—			87
Total cash and investments	$	5,766		$	5,560		$	70		$	11,396
Other items:
Strategic investments held at cost	$	—		$	—		$	364		$	364
Investment in joint venture	—			—			33			33
Convertible debt carried at discounted issuance cost	—			(2,666		)	—			(2,666		)
Foreign exchange derivative assets	—			30			—			30
Foreign exchange derivative liabilities	—			(35		)	—			(35		)
Commodity derivative liabilities	—			(1		)	—			(1		)
Our auction rate securities are predominantly rated investment grade and are primarily collateralized by student loans. The underlying loans of all but one of our auction rate securities, with a market value of $7 million, has partial guarantees by the U.S. government as part of the Federal Family Education Loan Program (“FFELP”) through the U.S. Department of Education. FFELP guarantees at least 95% of the loans which collateralize the auction rate securities. We believe the quality of the collateral underlying most of our auction rate securities will enable us to recover our principal balance.
To determine the estimated fair value of our investment in auction rate securities, we used a discounted cash flow model using a five year time horizon. As of December 31, 2013, the coupon rates used ranged from 0% to 4% and the discount rate was 1%, which rate represents the rate at which similar FFELP backed securities with a five year time horizon outside of the auction rate securities market were trading at as of that date. The assumptions used in preparing the discounted cash flow model include an incremental discount rate for the lack of liquidity in the market (“liquidity discount margin”) for an estimated period of time. The discount rate we selected was based on AA-rated banks as the majority of our portfolio is invested in student loans where EMC acts as a financier to these lenders. The liquidity discount margin represents an estimate of the additional return an investor would require for the lack of liquidity of these securities over an estimated five-year holding period. The rate used for the discount margin was 1% at both December 31, 2013 and 2012.
The following table provides a summary of changes in fair value of our Level 3 auction rate securities for the years ended December 31, 2013 and 2012 (table in millions):
	2013			2012
Balance, beginning of the period	$	70		$	75
Sales	(8		)	—
Calls at par value	(1		)	(7		)
Other-than-temporary impairment loss	(1		)	(3		)
Decrease in previously recognized unrealized losses included in other comprehensive income	—			5
Balance, end of the period	$	60		$	70
Significant changes in the unobservable inputs discussed above could result in a significantly lower or higher fair value measurement. Generally, an increase in the discount rate, liquidity discount margin or coupon rate results in a decrease in our fair value measurement and a decrease in the discount rate, liquidity discount margin or coupon rate results in an increase in our fair value measurement.
In the fourth quarter of 2012, EMC and Lenovo formed a joint venture, LenovoEMC Limited, to provide NAS systems to small- and medium-sized businesses and distributed enterprise sites. EMC has a 49% ownership percentage of the joint venture. We account for our LenovoEMC joint venture using the fair value method of accounting. To determine the estimated fair value of our investment, we use a discounted cash flow model using a three year time horizon. As of December 31, 2012, the discount rate used was 6%, which represents the incremental borrowing rate for a market participant. The assumptions used in preparing the discounted cash flow model include an analysis of estimated Lenovo NAS revenue against a prescribed target as well as consideration of the purchase price put and call features included in the joint venture agreement. The put and call features create a floor and a cap on the fair value of the investment. As such, there is a limit to the impact on the fair value that would result from significant changes in the unobservable inputs.
The following table provides a summary of changes in fair value of our LenovoEMC joint venture for the years ended December 31, 2013 and 2012 (table in millions):
	2013			2012
Balance, beginning of the period	$	33		$	—
Realized gain included in other income (expense), net	2			33
Balance, end of period	$	35		$	33
The carrying value of the strategic investments held at cost were accounted for under the cost method. As part of our impairment review, we perform a fair value calculation of our strategic investments held at cost on a quarterly basis using the most currently available information. To determine the estimated fair value of private strategic investments held at cost we use a combination of several valuation techniques including discounted cash flow models, acquisition comparables and trading comparables. In addition, we evaluate the impact of pre- and post-money valuations of recent financing events and the impact of those on our fully diluted ownership percentages, and we consider any available information regarding the issuer’s historical and forecasted performance as well as market comparables and conditions. The fair value of these investments is considered in our review for impairment if any events and changes in circumstances occur that might have a significant adverse effect on their value.
Investment Losses
Unrealized losses on investments at December 31, 2013 and 2012 by investment category and length of time the investment has been in a continuous unrealized loss position are as follows (table in millions):
December 31, 2013	Less Than 12 Months						12 Months or Greater						Total
	Fair			Gross			Fair			Gross			Fair		Gross
	Value			Unrealized			Value			Unrealized			Value		Unrealized
				Losses						Losses					Losses
U.S. government and agency obligations	$	1,161		$	(3	)	$	20		$	—		$	1,181	$	(3	)
U.S. corporate debt securities	532			(2		)	17			—			549		(2		)
High yield corporate debt securities	120			(3		)	—			—			120		(3		)
Municipal obligations	51			—			—			—			51		—
Auction rate securities	—			—			60			(3		)	60		(3		)
Foreign debt securities	695			(3		)	6			—			701		(3		)
Publicly traded equity securities	—			—			25			(1		)	25		(1		)
Total	$	2,559		$	(11	)	$	128		$	(4	)	$	2,687	$	(15	)
December 31, 2012	Less Than 12 Months						12 Months or Greater						Total
	Fair			Gross			Fair			Gross			Fair		Gross
	Value			Unrealized			Value			Unrealized			Value		Unrealized
				Losses						Losses					Losses
U.S. government and agency obligations	$	188		$	(1	)	$	12		$	—		$	200	$	(1	)
U.S. corporate debt securities	266			—			—			—			266		—
High yield corporate debt securities	21			—			1			(1		)	22		(1		)
Municipal obligations	258			—			12			—			270		—
Auction rate securities	—			—			70			(4		)	70		(4		)
Foreign debt securities	178			—			2			—			180		—
Publicly traded equity securities	1			(1		)	—			—			1		(1		)
Total	$	912		$	(2	)	$	97		$	(5	)	$	1,009	$	(7	)
For all of our securities for which the amortized cost basis was greater than the fair value at December 31, 2013 and 2012, we have concluded that currently we neither plan to sell the security nor is it more likely than not that we would be required to sell the security before its anticipated recovery. In making the determination as to whether the unrealized loss is other-than-temporary, we considered the length of time and extent the investment has been in an unrealized loss position, the financial condition and near-term prospects of the issuers, the issuers’ credit rating, third party guarantees and the time to maturity.
In 2012, in connection with our acquisition of XtremIO, a realized gain of $32 million was recorded in other income (expense), net on the consolidated income statements for EMC's gain on the XtremIO strategic investment. In 2011, a realized gain of $56 million was recorded in other income (expense), net on the consolidated income statements for the sale of VMware’s investment in Terremark Worldwide, Inc.
Contractual Maturities
The contractual maturities of fixed income securities held at December 31, 2013 are as follows (table in millions):
	December 31, 2013
	Amortized			Aggregate
	Cost Basis			Fair Value
Due within one year	$	2,695		$	2,697
Due after 1 year through 5 years	5,855			5,871
Due after 5 years through 10 years	519			531
Due after 10 years	507			503
Total	$	9,576		$	9,602
Short-term investments on the consolidated balance sheet include $76 million in variable rate notes which have contractual maturities in 2014, and are not classified within investments due within one year above.

Inventories

Inventories	12 Months Ended
	Dec. 31, 2013
Inventory Disclosure [Abstract]	'
Inventories	'
	Inventories
	Inventories consist of (table in millions):
		December 31,		December 31,
		2013		2012
	Work-in-process	$	696	$	606
	Finished goods	638		595
		$	1,334	$	1,201

Accounts_and_Notes_Receivable_

Accounts and Notes Receivable and Allowance for Credit Losses	12 Months Ended
	Dec. 31, 2013
Receivables [Abstract]	'
Accounts and Notes Receivable and Allowance for Credit Losses	'
	Accounts and Notes Receivable and Allowance for Credit Losses
	Accounts and notes receivable are recorded at cost. The portion of our notes receivable due in one year or less are included in accounts and notes receivable and the long-term portion is included in other assets, net on the consolidated balance sheets. Lease receivables arise from sales-type leases of products. We typically sell, without recourse, the contractual right to the lease payment stream and assets under lease to third parties. For certain customers, we retain the lease.
	The contractual amounts due under the leases we retained as of December 31, 2013 were as follows (table in millions):
	Year	Contractual Amounts
		Due Under Leases
	Due within one year	$	103
	Due within two years	80
	Due within three years	68
	Thereafter	1
	Total	252
	Less amounts representing interest	(5		)
	Present value	247
	Current portion (included in accounts and notes receivable)	101
	Long-term portion (included in other assets, net)	$	146
	Subsequent to December 31, 2013, we sold $34 million of these notes to third parties without recourse.
	We maintain an allowance for credit losses on our accounts and notes receivable. The allowance is based on the credit worthiness of our customers, including an assessment of the customer’s financial position, operating performance and their ability to meet their contractual obligation. We assess the credit scores for our customers each quarter. In addition, we consider our historical experience, the age of the receivable and current market and economic conditions. Uncollectible amounts are charged against the allowance account.
	In the event we determine that a lease may not be paid, we include in our allowance an amount for the outstanding balance related to the lease receivable. As of December 31, 2013, amounts from lease receivables past due for more than 90 days were not significant.
	The following table presents the activity of our allowance for credit losses related to lease receivables for the years ended December 31, 2013 and 2012 (table in millions):
		December 31,			December 31,
		2013			2012
	Balance, beginning of the period	$	17		$	24
	Recoveries	(12		)	(15		)
	Provisions	4			8
	Balance, end of the period	$	9		$	17
	Gross lease receivables totaled $252 million and $329 million in 2013 and 2012, respectively, before the allowance. The components of these balances were individually evaluated for impairment and included in our allowance determination as necessary.
	EMC CORPORATION AND SUBSIDIARIES
	SCHEDULE II–VALUATION AND QUALIFYING ACCOUNTS
	(in millions)
	Allowance for Bad Debts	Balance at Beginning of Period			Allowance for Bad Debts Charged to Selling, General and Administrative Expenses			Bad Debts			Balance at
	Description							Write-Offs			End of Period
	Year ended December 31, 2013 allowance for doubtful accounts	$	72		$	(1	)	$	(6	)	$	65
	Year ended December 31, 2012 allowance for doubtful accounts	65			39			(32		)	72
	Year ended December 31, 2011 allowance for doubtful accounts	61			20			(16		)	65
	Note: The allowance for doubtful accounts includes both current and non-current portions.
	Allowance for Sales Returns	Balance at Beginning of Period			Allowance for Sales Returns Accounted for as a Reduction in Revenue			Sales Returns			Balance at
	Description										End of Period
	Year ended December 31, 2013 allowance for sales returns	$	86		$	55		$	(65	)	$	76
	Year ended December 31, 2012 allowance for sales returns	133			17			(64		)	86
	Year ended December 31, 2011 allowance for sales returns	158			19			(44		)	133
	Tax Valuation Allowance	Balance at Beginning of Period			Tax Valuation Allowance Charged to Income Tax Provision			Tax Valuation Allowance Credited to Income Tax Provision			Balance at
	Description										End of Period
	Year ended December 31, 2013 income tax valuation allowance	$	183		$	32		$	(4	)	$	211
	Year ended December 31, 2012 income tax valuation allowance	151			33			(1		)	183
	Year ended December 31, 2011 income tax valuation allowance	126			25			—			151

Property_Plant_and_Equipment

Property, Plant and Equipment	12 Months Ended
	Dec. 31, 2013
Property, Plant and Equipment [Abstract]	'
Property, Plant and Equipment	'
	Property, Plant and Equipment
	Property, plant and equipment consist of (table in millions):
		December 31,			December 31,
		2013			2012
	Furniture and fixtures	$	229		$	197
	Equipment and software	5,973			5,345
	Buildings and improvements	2,089			1,873
	Land	132			121
	Building construction in progress	215			197
		8,638			7,733
	Accumulated depreciation	(5,160		)	(4,588		)
		$	3,478		$	3,145
	Depreciation expense was $867 million, $780 million and $728 million in 2013, 2012 and 2011, respectively. Building construction in progress at December 31, 2013 includes $74 million for facilities not yet placed in service that we are holding for future use.

Joint_Ventures

Joint Ventures	12 Months Ended
	Dec. 31, 2013
Equity Method Investments and Joint Ventures [Abstract]	'
Joint Ventures	'
	Joint Ventures
	We make investments in joint ventures. For each joint venture investment we consider the facts and circumstances in order to determine whether it qualifies for cost accounting, equity accounting, fair value method accounting or whether it should be consolidated.
	In 2009, Cisco and EMC formed VCE Company LLC (“VCE”), with investments from VMware and Intel. VCE, through Vblock infrastructure platforms, delivers an integrated IT offering that combines network, computing, storage, management, security and virtualization technologies for converged infrastructures and cloud based computing models. As of December 31, 2013, we have contributed $1,132 million in funding and $16 million in stock-based compensation to VCE since inception and own approximately 58% of VCE’s outstanding equity.
	We consider VCE a variable interest entity. Authoritative guidance related to variable interest entities states that the primary beneficiary of a variable interest entity must have both of the following characteristics: (a) the power to direct the activities of a variable interest entity that most significantly will impact the entity’s economic performance; and (b) the obligation to absorb losses that could be potentially significant to the variable interest entity or the right to receive benefits from the entity that could potentially be significant to the variable interest entity. Since the power to direct the activities of VCE which most significantly impact its economic performance are determined by its board of directors, which is comprised of equal representation of EMC and Cisco, and all significant decisions require the approval of the minority shareholders, we have determined we are not the primary beneficiary, and as such we account for the investment under the equity method.
	Our portion of VCE’s gains and losses is recognized in other income (expense), net, in the consolidated income statements. Our consolidated share of VCE’s losses, based upon our portion of the overall funding, was approximately 63% for the years ended December 31, 2013, 2012 and 2011. As of December 31, 2013, we have recorded net accumulated losses from VCE of $796 million since inception, of which $298 million, $245 million and $209 million were recorded in 2013, 2012 and 2011, respectively.
	We recognized $439 million, $286 million and $134 million in revenue from sales of product and services to VCE during the years ended December 31, 2013, 2012 and 2011, respectively. We perform certain administrative services, pursuant to an administrative services agreement, on behalf of VCE and we pay certain operating expenses on behalf of VCE. Accordingly, we have a receivable from VCE related to the administrative services agreement of $52 million and $44 million as of December 31, 2013 and 2012, respectively, which is included in other current assets in the consolidated balance sheets.

Accrued_Expenses

Accrued Expenses	12 Months Ended
	Dec. 31, 2013
Payables and Accruals [Abstract]	'
Accrued Expenses	'
	Accrued Expenses
	Accrued expenses consist of (table in millions):
		December 31,			December 31,
		2013			2012
	Salaries and benefits	$	1,078		$	1,018
	Product warranties	289			278
	Dividends payable (see Note O)	205			—
	Partner rebates	214			187
	Restructuring, current (See Note Q)	84			76
	Derivatives	23			40
	Other	890			893
		$	2,783		$	2,492
	Product Warranties
	Systems sales include a standard product warranty. At the time of the sale, we accrue for systems’ warranty costs. The initial systems’ warranty accrual is based upon our historical experience, expected future costs and specific identification of systems’ requirements. Upon sale or expiration of the initial warranty, we may sell additional maintenance contracts to our customers. Revenue from these additional maintenance contracts is included in deferred revenue and recognized ratably over the service period. The following represents the activity in our warranty accrual for the years ended December 31, 2013, 2012 and 2011 (table in millions):
		Year Ended December 31,
		2013			2012			2011
	Balance, beginning of the period	$	278		$	255		$	236
	Provision	198			182			175
	Amounts charged to the accrual	(187		)	(159		)	(156		)
	Balance, end of the period	$	289		$	278		$	255
	The provision includes amounts accrued for systems at the time of shipment, adjustments for changes in estimated costs for warranties on systems shipped in the period and changes in estimated costs for warranties on systems shipped in prior periods. It is not practicable to determine the amounts applicable to each of the components.

Income_Taxes

Income Taxes	12 Months Ended
	Dec. 31, 2013
Income Tax Disclosure [Abstract]	'
Income Taxes	'
	Income Taxes
	Our provision (benefit) for income taxes consists of (table in millions):
		2013				2012				2011
	Federal:
	Current	$	698			$	792			$	488
	Deferred	(163		)		(80		)		14
		535				712				502
	State:
	Current	84				74				70
	Deferred	(23		)		(12		)		(45		)
		61				62				25
	Foreign:
	Current	192				169				101
	Deferred	(16		)		(25		)		12
		176				144				113
	Total provision for income taxes	$	772			$	918			$	640
	In 2013, 2012 and 2011, we were able to utilize net operating loss carryforwards and tax credit carryforwards to reduce the current portion of our tax provision by $54 million, $59 million and $20 million, respectively.
	The effective income tax rate is based upon income for the year, composition of the income in different countries, effect of tax law changes and adjustments, if any, for potential tax consequences, benefits and/or resolutions of tax audits or other tax contingencies. A reconciliation of our income tax provision to the statutory federal tax rate is as follows:
		2013			2012			2011
	Statutory federal tax rate	35	%		35	%		35	%
	State taxes, net of federal taxes	1.6	%		1.3	%		0.7	%
	Resolution of uncertain tax positions	(0.9	)%		(0.5	)%		(1.7	)%
	Tax rate differential for international jurisdictions and other international related tax items	(15.2	)%		(13.6	)%		(14.4	)%
	U.S. tax credits	(3.8	)%		(0.2	)%		(2.8	)%
	International reorganization of acquired companies	0.6	%		0.3	%		—	%
	Permanent items	2.3	%		1.5	%		2.5	%
	Other	0.4	%		0.3	%		0.4	%
		20	%		24.1	%		19.7	%
	Substantially all the tax rate differential for international jurisdictions was driven by earnings of our Irish subsidiaries.
	On January 2, 2013, the American Taxpayer Relief Act of 2012 was signed into law. Some of the provisions were retroactive to January 1, 2012 including an extension of the U.S. federal tax credit for increasing research activities through December 31, 2013. Because the extension was enacted after December 31, 2012, our 2012 effective income tax rate did not reflect our 2012 federal tax credit for increasing research activities even though it was reported on our 2012 federal income tax returns. Our 2013 income tax provision included the federal tax credit for increasing research activities for 2012 as well as for 2013, which reduced our 2013 effective income tax rate by 3.5%.
	The components of the current and non-current deferred tax assets and liabilities are as follows (table in millions):
		31-Dec-13								December 31, 2012
		Deferred				Deferred				Deferred			Deferred
		Tax				Tax				Tax			Tax
		Asset				Liability				Asset			Liability
	Current:
	Accounts and notes receivable	$	96			$	—			$	68		$	—
	Inventory	73				—				64			—
	Accrued expenses	311				—				281			—
	Deferred revenue	365				—				281			—
	Equity	83				—				98			—
	Credit carryforwards	4				—				5			—
	Net operating losses	28				—				29			—
	Total current	960				—				826			—
	Property, plant and equipment, net	—				(291		)		—			(286		)
	Intangible and other assets, net	—				(680		)		—			(663		)
	Equity	139				—				144			—
	Deferred revenue	253				—				177			—
	Other non-current liabilities	—				(13		)		—			(43		)
	Credit carryforward	280				—				242			—
	Net operating losses	78				—				98			—
	Other comprehensive loss	109				—				120			—
	Total non-current	859				(984		)		781			(992		)
	Gross deferred tax assets and liabilities	1,819				(984		)		1,607			(992		)
	Valuation allowance	(211		)		—				(183		)	—
	Total deferred tax assets and liabilities	$	1,608			$	(984	)		$	1,424		$	(992	)
	At December 31, 2013 and 2012, net non-current state and foreign deferred tax assets of $133 million and $116 million, respectively, were included in other non-current assets on the consolidated balance sheets. We made minor revisions of certain amounts related to the classification of 2012 deferred tax balances related to deferred revenues and state tax carryforwards and related valuation allowance to conform to the 2013 presentation.
	We have gross federal, state and foreign net operating loss carryforwards of $219 million, $277 million and $45 million, respectively, at December 31, 2013. Portions of these carryforwards are subject to annual limitations, including Section 382 of the Internal Revenue Code of 1986 (“Code”), as amended, for U.S. tax purposes and similar provisions under other countries’ tax laws. Certain of these net operating loss carryforwards will begin to expire in 2014 if not utilized, while others have an unlimited carryforward period.
	We have federal and state credit carryforwards of $2 million and $283 million, respectively, at December 31, 2013. Portions of these carryforwards are subject to annual limitations, including Section 382 of the Code, as amended, for U.S. tax purposes and similar provisions under other countries’ tax laws. Certain of these credit carryforwards will begin to expire in 2016 if not utilized, while others have an unlimited carryforward period. The valuation allowance at December 31, 2013 mainly relates to state tax credit carryforwards.
	Deferred income taxes have not been provided on basis differences related to investments in foreign subsidiaries. These basis differences were approximately $10.2 billion and $8.1 billion at December 31, 2013 and 2012, respectively, and consisted primarily of undistributed earnings permanently invested in these entities. The change in the basis difference in 2013 was mainly attributable to income earned in the current year. At December 31, 2013, our total cash, cash equivalents, and short-term and long-term investments were $17.6 billion. This balance includes approximately $6.2 billion held by VMware, of which $4.1 billion is held outside of the U.S., and $4.3 billion held by EMC in entities outside of the U.S. If these overseas funds are needed for our operations in the U.S., we would be required to accrue and pay U.S. taxes to repatriate these funds. However, our intent is to permanently reinvest these funds outside of the U.S. and our current plans do not demonstrate a need to repatriate them to fund our U.S. operations. Determination of the amount of unrecognized deferred income tax liability related to these earnings is not practicable. Income before income taxes from foreign operations for 2013, 2012 and 2011 was $2.3 billion, $1.9 billion and $1.8 billion, respectively. Income before income taxes from domestic operations for 2013, 2012 and 2011 was $1.6 billion, $1.9 billion and $1.5 billion, respectively.
	The following is a rollforward of our gross consolidated liability for unrecognized income tax benefits for the three years ended December 31 (table in millions):
		2013				2012				2011
	Unrecognized tax benefits, beginning of year	$	270			$	197			$	230
Tax positions related to current year:
Additions	37				25				42
Reductions	—				(1		)		(2		)
Tax positions related to prior years:
Additions	10				64				14
Reductions	(33		)		(4		)		(71		)
Settlements	(5		)		—				(3		)
Lapses in statutes of limitations	(13		)		(11		)		(13		)
Unrecognized tax benefits, end of year	$	266			$	270			$	197
As of December 31, 2013, 2012 and 2011, $261 million, $255 million and $187 million, respectively, of the unrecognized tax benefits, if recognized, would have been recorded as a reduction to income tax expense. The remainder would be an adjustment to shareholders’ equity.
We are routinely under audit by the Internal Revenue Service (the “IRS”). We have concluded all U.S. federal income tax matters for years through 2008. The IRS commenced a federal income tax audit for the tax years 2009 and 2010 in the third quarter of 2012. The current federal income tax audit is in the early stage for information gathering and it is not expected to be completed until 2015. We also have income tax audits in process in numerous state, local and international jurisdictions. In our international jurisdictions that comprise a significant portion of our operations, the years that may be examined vary, with the earliest year being 2004. Based on the timing and outcome of examinations of EMC, the result of the expiration of statutes of limitations for specific jurisdictions or the timing and result of ruling requests from taxing authorities, it is reasonably possible that the related unrecognized tax benefits could change from those recorded in our statement of financial position. We anticipate that several of these audits may be finalized within the next twelve months. While we expect the amount of unrecognized tax benefits to change in the next twelve months, we do not expect the change to have a significant impact on our results of operations or financial position.
The $71 million reduction during 2011 for tax positions related to prior years is principally due to the resolution of certain transfer pricing matters, inclusive of the completion of audits in certain foreign jurisdictions and the completion of the 2007 and 2008 U.S. federal income tax audits.
We recognize interest expense and penalties related to income tax matters in income tax expense. For 2013, 2012 and 2011, $9 million, $4 million and $1 million, respectively, in interest expense was recognized. In addition to the unrecognized tax benefits noted above, the gross balance of the accrued interest and penalties were $42 million, $35 million and $32 million as of December 31, 2013, 2012 and 2011, respectively.

Retirement_Plan_Benefits

Retirement Plan Benefits	12 Months Ended
	Dec. 31, 2013
Compensation and Retirement Disclosure [Abstract]	'
Retirement Plan Benefits	'
	Retirement Plan Benefits
	401(k) Plan
	EMC’s Information Infrastructure business has established a deferred compensation program for certain employees that is qualified under Section 401(k) of the Code. EMC will match pre-tax employee contributions up to 6% of eligible compensation during each pay period (subject to a $750 maximum match each quarter). Matching contributions are subject to a 3 year vesting period. Our contributions amounted to $68 million, $88 million and $73 million in 2013, 2012 and 2011, respectively.
	Employees may elect to invest their contributions in a variety of funds, including an EMC stock fund. The deferred compensation program limits an employee’s maximum investment allocation in the EMC stock fund to 30% of their total contribution. Our matching contribution mirrors the investment allocation of the employee’s contribution.
	Defined Benefit Pension Plan
	We have a noncontributory defined benefit pension plan which was assumed as part of the Data General acquisition, which covers substantially all former Data General employees located in the U.S. In addition, certain of our foreign subsidiaries also have a defined benefit pension plan.
	Benefits under these plans are generally based on either career average or final average salaries and creditable years of service as defined in the plans. The annual cost for these plans is determined using the projected unit credit actuarial cost method that includes actuarial assumptions and estimates which are subject to change. The measurement date for the plans is December 31.
	The Data General U.S. pension plan’s (the “Pension Plan”) investment policy provides that no security, except issues of the U.S. Government, shall comprise more than 5% of total plan assets, measured at market. At December 31, 2013, the Pension Plan held $0.4 million of our common stock.
	The Pension Plan is summarized in the following tables. The other pension plans are not presented because they do not have a material impact on our consolidated financial position or results of operations.
	The components of the change in benefit obligation of the Pension Plan is as follows (table in millions):
			December 31,				December 31,
			2013				2012
	Benefit obligation, at beginning of year		$	539			$	483
	Interest cost		20				21
	Benefits paid		(18		)		(17		)
	Actuarial (gain) loss		(46		)		52
	Benefit obligation, at end of year		$	495			$	539
	The reconciliation of the beginning and ending balances of the fair value of the assets of the Pension Plan is as follows (table in millions):
			December 31,				December 31,
			2013				2012
	Fair value of plan assets, at beginning of year		$	431			$	397
	Actual return on plan assets		35				51
	Employer contributions to plan		1				—
	Benefits paid		(18		)		(17		)
	Fair value of plan assets, at end of year		$	449			$	431
	We did not make any significant contributions to the Pension Plan in 2013 or 2012 and we do not expect to make a contribution to the Pension Plan in 2014. The under-funded status of the Pension Plan at December 31, 2013 and 2012 was $46 million and $109 million, respectively. This amount is classified as a component of other long-term liabilities on the consolidated balance sheets.
	In 2013, $15 million of the accumulated actuarial loss and prior services cost associated with the Pension Plan were reclassified from accumulated comprehensive loss to a component of net periodic benefit cost. Additionally, the Pension Plan had net gains of $53 million included in accumulated other comprehensive income (loss), which was primarily the result of an increase in the discount rate at the end of 2013. We expect that $10 million of the total balance included in accumulated other comprehensive income (loss) at December 31, 2013 will be recognized as a component of net periodic benefit costs in 2014. We do not expect to receive any refunds from the Pension Plan in 2014.
	The components of net periodic expense of the Pension Plan are as follows (table in millions):
			2013				2012				2011
	Interest cost		$	20			$	21			$	23
	Expected return on plan assets		(28		)		(26		)		(25		)
	Recognized actuarial loss		15				13				11
	Net periodic expense		$	7			$	8			$	9
	The weighted-average assumptions used in the Pension Plan to determine benefit obligations at December 31 are as follows:
			December 31,			December 31,			December 31,
			2013			2012			2011
	Discount rate		4.7	%		3.7	%		4.6	%
	Rate of compensation increase		N/A			N/A			N/A
	The weighted-average assumptions used in the Pension Plan to determine periodic benefit cost for the years ended December 31 are as follows:
			December 31,			December 31,			December 31,
			2013			2012			2011
	Discount rate		3.7	%		4.6	%		5.4	%
	Expected long-term rate of return on plan assets		6.75	%		6.75	%		6.75	%
	Rate of compensation increase		N/A			N/A			N/A
	The benefit payments are expected to be paid in the following years (table in millions):
	2014	$	23
	2015	25
	2016	26
	2017	28
	2018	29
	2019-2022	163
	Fair Value of Plan Assets
	Following is a description of the valuation methodologies used for assets measured at fair value at December 31, 2013:
	Common Collective Trusts – valued at the net asset value calculated by the fund manager based on the underlying investments. These are all classified within Level 2 of the valuation hierarchy. These include: EB Daily Valued Small Cap Stock Index Fund, EB Daily Valued Large Cap Growth Stock Index Fund, EB Daily Valued Large Cap Value Stock Index Fund, EB Daily Valued Stock Index Fund, EB Daily Valued International Stock Index Fund, EB Daily Valued Emerging Markets Index Fund, EB Long Term Government Bond Index Fund, EB Long Term Credit Bond Index and Collective Trust High Yield Fund.
	Corporate Debt Securities – valued daily at the closing price reported in active U.S. financial markets and are classified within Level 2 of the valuation hierarchy.
	The following table sets forth, by level within the fair value hierarchy, the Pension Plan’s assets at fair value as of December 31, 2013 and 2012 (table in millions):
			December 31, 2013
			Level 1				Level 2				Level 3			Total
	Common collective trusts		$	—			$	330			$	—		$	330
	U.S. Treasury securities		2				—				—			2
	Corporate debt securities		—				114				—			114
	Total		$	2			$	444			$	—		446
	Plan payables, net of accrued interest and dividends													3
Total													$	449
		December 31, 2012
		Level 1				Level 2				Level 3			Total
Common collective trusts		$	—			$	308			$	—		$	308
U.S. Treasury securities		2				—				—			2
Corporate debt securities		—				120				—			120
Total		$	2			$	428			$	—		430
Plan payables, net of accrued interest and dividends													1
Total													$	431
Dividends, accrued interest and net plan payables are not material to the plan assets. Accordingly, we have not classified these into the fair value hierarchy above at December 31, 2013 and 2012.
Concentration of Risks
Pension Plan investments at fair value as of December 31, 2013 and 2012 which represented 5% or more of the Pension Plan’s net assets were as follows (table in millions):
		2013				2012
EB Daily Valued Small Cap Stock Index Fund		$	30			$	26
EB Daily Valued Stock Index Fund		104				86
EB Daily Valued International Stock Index Fund		30				26
EB Long Term Government Bond Index		40				46
EB Long Term Credit Bond Index		63				68
Corporate Debt Securities		118				124
		$	385			$	376
Investment Strategy
The Pension Plan’s assets are managed by outside investment managers. Our investment strategy with respect to pension assets is to achieve a long-term growth of capital, consistent with an appropriate level of risk.
The expected long-term rate of return on the Pension Plan assets considers the current level of expected returns on risk free investments (primarily government bonds), the historical level of the risk premium associated with the other asset classes in which the portfolio is invested and the expectations for future returns of each asset class. The expected return for each asset class was weighted based on the target asset allocation to develop the expected long-term rate of return on assets. As market conditions permit, we expect to continue to shift the asset allocation to lower the percentage of investments in equities and increase the percentage of investments in long-duration fixed-income securities. The continued changes could result in a reduction in the long-term rate of return on the Pension Plan assets and increase future pension expense. The long-term weighted average target asset allocations are as follows:
	December 31, 2013
U.S. large capitalization equities	17	%
U.S. small capitalization equities	4
International equities	4
U.S. long-duration fixed income	75
High yield fixed income	—
Total	100	%
The actual allocation of the assets in the Pension Plan at December 31, 2013 and 2012 were as follows:
		December 31,			December 31,
		2013			2012
U.S. large capitalization equities		33	%		28	%
U.S. small capitalization equities		7			6
International equities		8			8
U.S. long-duration fixed income		49			55
High yield fixed income		3			3
Total		100	%		100	%

Commitments_and_Contingencies

Commitments and Contingencies	12 Months Ended
	Dec. 31, 2013
Commitments and Contingencies Disclosure [Abstract]	'
Commitments and Contingencies	'
	Commitments and Contingencies
	Operating Lease Commitments
	We lease office and warehouse facilities and equipment under various operating leases. Facility leases generally include renewal options. Rent expense was as follows (table in millions):
			2013			2012			2011
	Rent expense		$	328		$	312		$	309
	Sublease proceeds		(2		)	(4		)	(5		)
	Net rent expense		$	326		$	308		$	304
	Our future operating lease commitments as of December 31, 2013 are as follows (table in millions):
	2014	$	294
	2015	235
	2016	176
	2017	134
	2018	94
	Thereafter	679
	Total minimum lease payments	$	1,612
	We sublet certain of our office facilities. Expected future non-cancelable sublease proceeds range from approximately $1 million to $2 million per year for the next five years with total sublease proceeds of $8 million as of December 31, 2013.
	Outstanding Purchase Orders
	At December 31, 2013, we had outstanding purchase orders aggregating approximately $2.5 billion. The purchase orders are for manufacturing and non-manufacturing related goods and services. While the purchase orders are generally cancelable without penalty, certain vendor agreements provide for percentage-based cancellation fees or minimum restocking charges based on the nature of the product or service.
	RSA Special Charge
	In March 2011, RSA was the target of a sophisticated cyber attack which resulted in information related to RSA’s SecurID products being compromised. In the first quarter of 2011, we incurred and accrued costs associated with investigating the attack, hardening our systems and working with our customers to implement remediation programs. In the second quarter of 2011, we recorded a $66 million charge in cost of sales related to the expansion of the customer remediation programs. We expanded our customer remediation programs in June 2011 to respond to heightened customer concerns resulting from press coverage relating to an unsuccessful cyber attack on one of our defense sector customers, as well as broad media coverage of cyber attacks on other high profile organizations. As of June 30, 2012, we had substantially completed the remediation efforts and concluded that no additional material losses related to the remediation efforts were reasonably possible. Accordingly, we released the residual reserve against cost of sales during the second quarter of 2012.
	Guarantees and Indemnification Obligations
	EMC’s subsidiaries have entered into arrangements with financial institutions for such institutions to provide guarantees for rent, taxes, insurance, leases, performance bonds, bid bonds and customs duties aggregating $159 million as of December 31, 2013. The guarantees vary in length of time. In connection with these arrangements, we have agreed to guarantee substantially all of the guarantees provided by these financial institutions. EMC and certain of its subsidiaries have also entered into arrangements with financial institutions in order to facilitate the management of currency risk. EMC has agreed to guarantee the obligations of its subsidiaries under these arrangements.
	We enter into agreements in the ordinary course of business with, among others, customers, resellers, joint ventures, original equipment manufacturers ("OEMs"), systems integrators and distributors. Most of these agreements require us to indemnify the other party against third-party claims alleging that an EMC product infringes a patent and/or copyright. Certain agreements in which we grant limited licenses to specific EMC-trademarks require us to indemnify the other party against third-party claims alleging that the use of the licensed trademark infringes a third-party trademark. Certain of these agreements require us to indemnify the other party against certain claims relating to the loss or processing of data, to real or tangible personal property damage, personal injury or the acts or omissions of EMC, its employees, agents or representatives. In addition, from time to time, we have made certain guarantees regarding the performance of our systems to our customers. We have also made certain guarantees for obligations of affiliated third parties.
	We have agreements with certain vendors, financial institutions, lessors and service providers pursuant to which we have agreed to indemnify the other party for specified matters, such as acts and omissions of EMC, its employees, agents or representatives.
	We have procurement or license agreements with respect to technology that is used in our products and agreements in which we obtain rights to a product from an OEM. Under some of these agreements, we have agreed to indemnify the supplier for certain claims that may be brought against such party with respect to our acts or omissions relating to the supplied products or technologies.
	We have agreed to indemnify the directors, executive officers and certain other officers of EMC and our subsidiaries, to the extent legally permissible, against all liabilities reasonably incurred in connection with any action in which such individual may be involved by reason of such individual being or having been a director or officer.
	In connection with certain acquisitions, we have agreed to indemnify the current and former directors, officers and employees of the acquired company in accordance with the acquired company’s by-laws and charter in effect immediately prior to the acquisition or in accordance with indemnification or similar agreements entered into by the acquired company and such persons. In a substantial majority of instances, we have maintained the acquired company’s directors’ and officers’ insurance, which should enable us to recover a portion of any future amounts paid. These indemnities vary in length of time.
	Based upon our historical experience and information known as of December 31, 2013, we believe our liability on the above guarantees and indemnities at December 31, 2013 is not material.
	Litigation
	We are involved in a variety of claims, demands, suits, investigations and proceedings that arise from time to time relating to matters incidental to the ordinary course of our business, including actions with respect to contracts, intellectual property, product liability, employment, benefits and securities matters. As required by authoritative guidance, we have estimated the amount of probable losses that may result from all currently pending matters, and such amounts are reflected in our consolidated financial statements. These recorded amounts are not material to our consolidated financial position or results of operations and no additional material losses related to these pending matters are reasonably possible. While it is not possible to predict the outcome of these matters with certainty, we do not expect the results of any of these actions to have a material adverse effect on our business, results of operations or financial condition. Because litigation is inherently unpredictable, however, the actual amounts of loss may prove to be larger or smaller than the amounts reflected in our consolidated financial statements, and we could incur judgments or enter into settlements of claims that could adversely affect our operating results or cash flows in a particular period.

Stockholders_Equity

Stockholders' Equity	12 Months Ended
	Dec. 31, 2013
Stockholders' Equity Note [Abstract]	'
Shareholders' Equity	'
	Shareholders’ Equity
	Net Income Per Share
	The reconciliation from basic to diluted earnings per share for both the numerators and denominators is as follows (table in millions):
		2013				2012			2011
	Numerator:
	Net income attributable to EMC Corporation	$	2,889			$	2,733		$	2,461
	Incremental dilution from VMware	(8		)		(10		)	(14		)
	Net income – dilution attributable to EMC Corporation	$	2,881			$	2,723		$	2,447
	Denominator:
	Weighted average shares, basic	2,074				2,093			2,056
	Weighted average common stock equivalents	28				40			52
	Assumed conversion of the 2013 Notes and associated warrants	58				73			121
	Weighted average shares, diluted	2,160				2,206			2,229
	Due to the cash settlement feature of the principal amount of the 2013 Notes, we only included the impact of the premium feature in our diluted earnings per share calculation when the 2013 Notes are convertible due to maturity or when the average stock price exceeds the conversion price of the 2013 Notes.
	Concurrent with the issuance of the 2011 Notes and 2013 Notes, we also entered into separate transactions in which we sold warrants to acquire, subject to customary anti-dilution adjustments, approximately 215 million shares of our common stock at an exercise price of approximately $19.55 per share of our common stock. Half of the associated warrants were exercised during the year ended December 31, 2012. The remaining 108 million warrants become exercisable each day beginning February 18, 2014 over the course of the settlement period through March 17, 2014. These warrants will be settled with shares of our common stock. As such, we include the impact of the remaining outstanding sold warrants in our diluted earnings per share calculation during the year ended December 31, 2013.
	Restricted stock awards, restricted stock units and options to acquire 4 million, 4 million and 13 million shares of our common stock for the years ended December 31, 2013, 2012 and 2011, respectively, were excluded from the calculation of diluted earnings per share because they were antidilutive. The incremental dilution from VMware represents the impact of VMware’s dilutive securities on EMC’s consolidated diluted net income per share and is calculated by multiplying the difference between VMware’s basic and diluted earnings per share by the number of VMware shares owned by EMC.
	Repurchases of Common Stock
	We utilize both authorized and unissued shares (including repurchased shares) for all issuances under our equity plans. Our Board of Directors authorized the repurchase of 250 million shares of our common stock in April 2008 and an additional 250 million shares of our common stock in February 2013. For the year ended December 31, 2013, we spent $3.0 billion to repurchase 122 million shares of our common stock. Of the 500 million shares authorized for repurchase, we have repurchased 345 million shares at a total cost of $7.4 billion, leaving a remaining balance of 155 million shares authorized for future repurchases. Including the amount spent in 2013, we plan to spend up to $3.5 billion by the end of the second quarter of 2014 and up to $6.0 billion by the end of 2015 on common stock repurchases.
	Cash Dividend on Common Stock
	In May 2013, our Board of Directors approved the initiation of a quarterly cash dividend to EMC shareholders. Our Board of Directors declared quarterly cash dividends of $0.10 per share of common stock in each of the second, third and fourth quarters of 2013. During the year ended December 31, 2013, EMC paid cash dividends of $415 million. On January 23, 2014, EMC paid a cash dividend of $202 million to shareholders of record as of the close of business on January 8, 2014, which was declared on December 12, 2013.
	Accumulated Other Comprehensive Income (Loss)
	Changes in accumulated other comprehensive income (loss), which is presented net of tax, consist of the following (table in millions):
		Foreign Currency Translation Adjustments				Unrealized Net Gains on Investments			Unrealized Net Losses on Derivatives			Recognition of Actuarial Net Loss from Pension and Other Postretirement Plans			Accumulated Other Comprehensive Income Attributable to the Non-controlling Interest in VMware, Inc.			Total
	Balance as of January, 1 2013(a)	$	(9	)		$	64		$	(109	)	$	(153	)	$	(1	)	$	(208	)
	Other comprehensive income (loss) before reclassifications	(44		)		(22		)	13			43			—			(10		)
	Net losses (gains) reclassified from accumulated other comprehensive income	—				(11		)	(10		)	—			—			(21		)
	Net current period other comprehensive income (loss)	(44		)		(33		)	3			43			—			(31		)
	Balance as of December 31, 2013(b)	$	(53	)		$	31		$	(106	)	$	(110	)	$	(1	)	$	(239	)
	__________________
	(a)	Net of taxes (benefits) of $37 million for unrealized net gains on investments, $(67) million for unrealized net losses on derivatives and $(87) million for actuarial net loss on pension plans.
	(b)	Net of taxes (benefits) of $18 million for unrealized net gains on investments, $(66) million for unrealized net losses on derivatives and $(61) million for actuarial net loss on pension plans.
	The amounts reclassified out of accumulated other comprehensive income (loss) for the year ended December 31, 2013 is as follows (table in millions):
	Accumulated Other Comprehensive Income Components		Amount Reclassified from Accumulated Other Comprehensive Income				Impacted Line Item on
							Consolidated Income Statements
	For the Year Ended, December 31, 2013
	Net gain on investments:		$	17			Investment income
			(6		)		Provision for income tax
	Net of tax		$	11
	Net gain on derivatives:
	Foreign exchange contracts		$	12			Product sales revenue
	Foreign exchange contracts		—				Cost of product sales
	Total net gain on derivatives before tax		12
			(2		)		Provision for income tax
	Net of tax		$	10
	EMC Preferred Stock
	Our preferred stock may be issued from time to time in one or more series, with such terms as our Board of Directors may determine, without further action by our shareholders.

StockBased_Compensation

Stock-Based Compensation	12 Months Ended
	Dec. 31, 2013
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]	'
Stock-Based Compensation	'
	Stock-Based Compensation
	EMC Equity Plans
	The EMC Corporation Amended and Restated 2003 Stock Plan (the “2003 Plan”) provides for the grant of stock options, stock appreciation rights, restricted stock and restricted stock units. The exercise price for a stock option shall not be less than 100% of the fair market value of our common stock on the date of grant. Options generally become exercisable in annual installments over a period of five years after the date of grant and expire ten years after the date of grant. Incentive stock options will expire no later than ten years after the date of grant. Restricted stock is common stock that is subject to a risk of forfeiture or other restrictions that will lapse upon satisfaction of specified conditions. Restricted stock units represent the right to receive shares of common stock in the future, with the right to future delivery of the shares subject to a risk of forfeiture or other restrictions that will lapse upon satisfaction of specified conditions. Grants of restricted stock awards or restricted stock units that vest only by the passage of time will not vest fully in less than two years after the date of grant, except for grants to non-employee Directors that are not subject to this minimum two-year vesting requirement. The 2003 Plan allows us to grant up to 420 million shares of common stock. We recognize restricted stock awards and restricted stock units against the 2003 Plan share reserve as two shares for every one share issued in connection with such awards.
	In addition to the 2003 Plan, we have four other stock option plans (the “1985 Plan,” the “1993 Plan,” the “2001 Plan” and the “1992 Directors Plan”). In May 2007, these four plans were consolidated into the 2003 Plan such that all future grants will be granted under the 2003 Plan and shares that are not issued as a result of cancellations, expirations or forfeitures, will become available for grant under the 2003 Plan.
	A total of 982 million shares of common stock have been reserved for issuance under the above five plans. At December 31, 2013, there were an aggregate of 78 million shares of common stock available for issuance pursuant to future grants under the 2003 Plan.
	We have, in connection with the acquisition of various companies, assumed the stock option plans of these companies. We do not intend to make future grants under any of such plans.
	EMC Employee Stock Purchase Plan
	Under our Amended and Restated 1989 Employee Stock Purchase Plan (the “1989 Plan”), eligible employees may purchase shares of common stock through payroll deductions at 85% of the fair market value at the time of exercise. During the years ended December 31, 2012 and 2011, options to purchase shares were granted twice yearly, on January 1 and July 1, and were exercisable on the succeeding June 30 or December 31. During 2013, we amended the 1989 Plan to adjust the grant and exercise dates and extended the exercise date of December 31, 2013 to January 31, 2014. A total of 183 million shares of common stock have been reserved for issuance under the 1989 Plan. The following table summarizes the 1989 Plan activity in the years ended December 31, 2013, 2012 and 2011 (table in millions, except per share amounts):
		For the Year Ended
		December 31, 2013				December 31, 2012				December 31, 2011
	Cash proceeds	$	82			$	154			$	141
	Common shares purchased	4				7				7
	Weighted-average price per share	$	20.08			$	21.65			$	20.44
	As of December 31, 2013, $93 million of ESPP withholdings were recorded as a liability on the consolidated balance sheet for the next purchase that occurred in January 2014.
	EMC Stock Options
	The following table summarizes our option activity under all equity plans since January 1, 2011 (shares in millions):
		Number of			Weighted Average
		Shares			Exercise Price
					(per share)
	Outstanding, January 1, 2011	172			$	15.23
	Options granted relating to business acquisitions	1			3.24
	Granted	2			25.31
	Forfeited	(4	)		13
	Expired	(14	)		40.05
	Exercised	(45	)		11.91
	Outstanding, December 31, 2011	112			13.69
	Options granted relating to business acquisitions	2			1.54
	Granted	1			26.8
	Forfeited	(2	)		13.75
	Expired	(1	)		14.19
	Exercised	(35	)		11.65
	Outstanding, December 31, 2012	77			14.39
	Options granted relating to business acquisitions	1			3.29
	Granted	—			—
	Forfeited	(1	)		13.36
	Expired	—			—
	Exercised	(20	)		13.1
	Outstanding, December 31, 2013	57			14.56
	Exercisable, December 31, 2013	50			14.58
	Vested and expected to vest, December 31, 2013	57			$	14.59
	At December 31, 2013, the weighted-average remaining contractual term was 3.5 years and the aggregate intrinsic value was $533 million for the 50 million exercisable shares. For the 57 million shares vested and expected to vest at December 31, 2013, the weighted-average remaining contractual term was 3.9 years and the aggregate intrinsic value was $604 million. The intrinsic value is based on our closing stock price of $25.15 as of December 31, 2013, which would have been received by the option holders had all in-the-money options been exercised as of that date. The total pre-tax intrinsic values of options exercised in 2013, 2012 and 2011 were $240 million, $518 million and $619 million, respectively. Cash proceeds from the exercise of stock options were $260 million, $407 million and $532 million in 2013, 2012 and 2011, respectively. Income tax benefits realized from the exercise of stock options in 2013, 2012 and 2011 were $45 million, $97 million and $127 million, respectively.
	EMC Restricted Stock and Restricted Stock Units
	Our restricted stock awards and units are valued based on our stock price on the grant date. Our restricted stock awards and units have various vesting terms from the date of grant, including pro rated vesting over three or four years, cliff vesting at the end of three or five years with acceleration for achieving specified performance criteria and vesting on various dates contingent on achieving specified performance criteria. For awards with performance conditions, management evaluates the criteria in each grant to determine the probability that the performance condition will be achieved.
	The following table summarizes our restricted stock and restricted stock unit activity since January 1, 2011 (shares in millions):
		Number of			Weighted Average
		Shares			Grant Date
					Fair Value
	Restricted stock and restricted stock units at January 1, 2011	44			$	17.2
	Granted	21			25.12
	Vested	(15	)		16.44
	Forfeited	(4	)		20.56
	Outstanding, December 31, 2011	46			21.1
	Granted	21			26.57
	Vested	(16	)		18.92
	Forfeited	(4	)		23.09
	Outstanding, December 31, 2012	47			24.39
	Granted	20			25.55
	Vested	(15	)		22.61
	Forfeited	(4	)		24.8
	Restricted stock and restricted stock units at December 31, 2013	48			$	25.43
	The total intrinsic values of restricted stock and restricted stock units that vested in 2013, 2012 and 2011 were $404 million, $421 million and $371 million, respectively. As of December 31, 2013, restricted stock and restricted stock units representing 48 million shares were outstanding and unvested, with an aggregate intrinsic value of $1,203 million. These shares and units are scheduled to vest through 2018. Of the total shares of restricted stock and restricted stock units outstanding, 43 million shares and units will vest upon fulfilling service conditions, of which vesting for 9 million shares and units will accelerate upon achieving performance conditions. The remaining 5 million shares and units will vest only if certain performance conditions are achieved.
	VMware Equity Plans
	In June 2007, VMware adopted its 2007 Equity and Incentive Plan (the “2007 Plan”). In May 2009, VMware amended its 2007 Plan to increase the number of shares available for issuance by 20 million shares for total shares available for issuance of 100 million. In May 2013, VMware further amended the 2007 Plan to increase the number of shares available for issuance by 13 million shares. The number of shares underlying outstanding equity awards that VMware assumes in the course of business acquisitions are also added to the 2007 Plan reserve on an as-converted basis. VMware has assumed 2 million shares, which accordingly have been added to the 2007 Plan reserve.
Awards under the 2007 Plan may be in the form of stock options or other stock-based awards, including awards of restricted stock units. The exercise price for a stock option awarded under the 2007 Plan shall not be less than 100% of the fair market value of VMware Class A common stock on the date of grant. Most options granted under the 2007 Plan vest 25% after the first year and then monthly thereafter over the following three years and expire between six and seven years from the date of grant. Most restricted stock grants made under the 2007 Plan have a three-year to four-year period over which they vest. VMware’s Compensation and Corporate Governance Committee determines the vesting schedule for all equity awards. VMware utilizes both authorized and unissued shares to satisfy all shares issued under the 2007 Plan. At December 31, 2013, there were an aggregate of 11 million shares of common stock available for issuance pursuant to future grants under the 2007 Plan.
VMware Stock Repurchase Programs
The following table summarizes stock repurchase authorizations in the years ended December 31, 2013, 2012 and 2011 (amounts in table in millions):
Month Authorized	Amount Authorized		Expiration Date
Aug-13	700		End of 2015
Nov-12	250		End of 2014
Feb-12	600		End of 2013
Feb-11	550		End of 2012
Mar-10	400		End of 2011
Purchases under the November 2012 authorization were completed in the fourth quarter of 2013. Purchases under the February 2012 authorization were completed in the second quarter of 2013. Purchases under the February 2011 authorization were completed in the second quarter of 2012. From time to time, future stock repurchases may be made pursuant to the August 2013 authorization in open market transactions or privately negotiated transactions as permitted by securities laws and other legal requirements.
VMware is not obligated to purchase any shares under its stock repurchase programs. The timing of any repurchases and the actual number of shares repurchased will depend on a variety of factors, including VMware’s stock price, cash requirements for operations and business combinations, corporate and regulatory requirements and other market and economic conditions. Purchases can be discontinued at any time that VMware feels additional purchases are not warranted. All shares repurchased under VMware’s stock repurchase programs are retired.
The following table summarizes stock repurchase activity in the years ended December 31, 2013, 2012 and 2011 (table in millions, except per share amounts):
	For the Year Ended December 31,
	2013				2012				2011
Aggregate purchase price	$	508			$	468			$	526
Class A common shares repurchased	7				5				6
Weighted-average price per share	$	76.58			$	91.1			$	88.37
The amount of repurchased shares includes commissions and was classified as a reduction to additional paid-in capital. As of December 31, 2013, the cumulative authorized amount remaining for repurchase was $660 million.
VMware Employee Stock Purchase Plan
In June 2007, VMware adopted its 2007 Employee Stock Purchase Plan (the “ESPP”), which is intended to be qualified under Section 423 of the Internal Revenue Code. In May 2013, VMware amended its ESPP to increase the number of shares available for issuance by 8 million shares. Under the ESPP, eligible VMware employees are granted options to purchase shares at the lower of 85% of the fair market value of the stock at the time of grant or 85% of the fair market value at the time of exercise. Options to purchase shares are generally granted twice yearly on February 1 and August 1 and exercisable on the succeeding July 31 and January 31, respectively, of each year. As of December 31, 2013, 7 million shares of VMware Class A common stock were available for issuance pursuant to future grants under the ESPP.
The following table summarizes ESPP activity in the years ended December 31, 2013, 2012 and 2011 (table in millions, except per share amounts):
	For the Year Ended
	December 31, 2013				December 31, 2012				December 31, 2011
Cash proceeds	$	76			$	69			$	57
Class A common shares purchased	1				1				1
Weighted-average price per share	$	65.97			$	77.34			$	69.81
As of December 31, 2013, $36 million of ESPP withholdings were recorded as a liability on the consolidated balance sheet for the next purchase that occurred in January 2014.
VMware Stock Options
The following table summarizes activity since January 1, 2011 for VMware employees in VMware stock options (shares in millions):
	Number of			Weighted Average
	Shares			Exercise Price
				(per share)
Outstanding, January 1, 2011	27			$	33.54
Forfeited	(1	)		40.98
Exercised	(10	)		28.64
Outstanding, December 31, 2011	16			35.27
Granted	1			4.67
Forfeited	(1	)		42.07
Exercised	(6	)		30.44
Outstanding, December 31, 2012	10			34.36
Granted	1			71.53
Exercised	(5	)		28.12
Outstanding, December 31, 2013	6			44.12
Exercisable, December 31, 2013	4			36.45
Vested and expected to vest	6			$	42.84
The above table includes stock options granted in conjunction with unvested stock options assumed in business combinations. As a result, the weighted-average exercise price per share may vary from the VMware stock price at time of grant.
As of December 31, 2013, for the VMware stock options, the weighted-average remaining contractual term was 1.8 years and the aggregate intrinsic value was $209 million for the 4 million exercisable shares. For the 6 million options vested and expected to vest at December 31, 2013, the weighted-average remaining contractual term was 3.2 years and the aggregate intrinsic value was $261 million. These aggregate intrinsic values represent the total pre-tax intrinsic values based on VMware’s closing stock price of $89.71 as of December 31, 2013, which would have been received by the option holders had all in-the-money options been exercised as of that date. The options exercised in 2013, 2012 and 2011 had a pre-tax intrinsic value of $256 million, $443 million and $648 million, respectively.
VMware Restricted Stock
The following table summarizes restricted stock activity since January 1, 2011 (units in millions):
	Number of			Weighted Average
	Units			Grant Date
				Fair Value
				(per unit)
Restricted stock at January 1, 2011	10			$	54.17
Granted	5			91.51
Vested	(4	)		48.47
Forfeited	(1	)		64.7
Outstanding, December 31, 2011	10			72.74
Granted	8			101.73
Vested	(4	)		69.01
Forfeited	(2	)		81.53
Outstanding, December 31, 2012	12			91.93
Granted	7			76.2
Vested	(4	)		83.21
Forfeited	(2	)		90.55
Outstanding, December 31, 2013	13			$	85.85
As of December 31, 2013, restricted stock representing 13 million shares of VMware's Class A common stock were outstanding, with an aggregate intrinsic value of $1,153 million based on VMware’s closing price as of December 31, 2013.
Stock-Based Compensation Expense
The following tables summarize the components of total stock-based compensation expense included in our consolidated income statements in 2013, 2012 and 2011 (in millions):
	Year Ended December 31, 2013
	Stock Options				Restricted				Total Stock-Based
					Stock				Compensation
Cost of product sales	$	19			$	29			$	48
Cost of services	15				61				76
Research and development	75				282				357
Selling, general and administrative	82				372				454
Stock-based compensation expense before income taxes	191				744				935
Income tax benefit	56				170				226
Total stock-based compensation, net of tax	$	135			$	574			$	709
	Year Ended December 31, 2012
	Stock Options				Restricted				Total Stock-Based
					Stock				Compensation
Cost of product sales	$	22			$	30			$	52
Cost of services	21				53				74
Research and development	88				236				324
Selling, general and administrative	131				339				470
Stock-based compensation expense before income taxes	262				658				920
Income tax benefit	68				162				230
Total stock-based compensation, net of tax	$	194			$	496			$	690
	Year Ended December 31, 2011
	Stock Options				Restricted				Total Stock-Based
					Stock				Compensation
Cost of product sales	$	30			$	31			$	61
Cost of services	25				38				63
Research and development	106				193				299
Selling, general and administrative	165				248				413
Stock-based compensation expense before income taxes	326				510				836
Income tax benefit	73				120				193
Total stock-based compensation, net of tax	$	253			$	390			$	643
Stock-based compensation expense includes $54 million, $52 million and $44 million of expense associated with our employee stock purchase plans for 2013, 2012 and 2011, respectively.
The table below presents the net change in amounts capitalized or accrued in 2013 and 2012 for the following items (in millions):
	Increased (decreased)				Increased (decreased)
	during the year ended				during the year ended
	December 31, 2013				December 31, 2012
Accrued expenses (accrued warranty expenses)	$	(1	)		$	(2	)
Other assets	2				8
As of December 31, 2013, the total unrecognized after-tax compensation cost for stock options, restricted stock and restricted stock units was $1,379 million. This non-cash expense will be recognized through 2018 with a weighted-average remaining period of 1.5 years.
Fair Value of EMC Stock Options
The fair value of each option granted during the years ended December 31, 2013, 2012 and 2011 was estimated on the date of grant using the Black-Scholes option-pricing model with the following weighted-average assumptions:
	For the Year Ended
	December 31,
EMC Stock Options	2013		2012				2011
Dividend yield	N/A		None				None
Expected volatility	N/A		34.3		%		33.3		%
Risk-free interest rate	N/A		0.8		%		1.6		%
Expected term (in years)	N/A		5.2				4.9
Weighted-average fair value at grant date	N/A		$	8.56			$	8
Apart from options issued through business acquisitions which are discussed in Note C, there were no stock options granted during the year ended December 31, 2013. For all stock options granted in 2012 and 2011, volatility was based on an analysis of historical stock prices and implied volatilities from traded options in our stock. We use EMC historical data to estimate the expected term of options granted within the valuation model. For 2012 and 2011, EMC’s expected dividend yield input was zero as it had not historically paid cash dividends on its common stock. The risk-free interest rate was based on a U.S. Treasury instrument whose term is consistent with the expected term of the stock options.
Fair Value of VMware Options
The fair value of each option to acquire VMware Class A common stock granted during the years ended December 31, 2013, 2012 and 2011 was estimated on the date of grant using the Black-Scholes option-pricing model with the following weighted-average assumptions:
	For the Year Ended
	December 31,
VMware Stock Options	2013				2012				2011
Dividend yield	None				None				None
Expected volatility	38.5		%		35.8		%		37.7		%
Risk-free interest rate	0.9		%		0.3		%		1		%
Expected term (in years)	3.6				2.7				3
Weighted-average fair value at grant date	$	29.47			$	80.45			$	88.4
	For the Year Ended
	December 31,
VMware Employee Stock Purchase Plan	2013				2012				2011
Dividend yield	None				None				None
Expected volatility	32.9		%		37.8		%		34.9		%
Risk-free interest rate	0.1		%		0.1		%		0.2		%
Expected term (in years)	0.5				0.5				0.5
Weighted-average fair value at grant date	$	20.45			$	23.36			$	23.69
The weighted-average grant date fair value of VMware stock options can fluctuate from period to period primarily due to higher valued options assumed through business combinations with exercise prices lower than the fair market value of VMware’s stock on the date of grant.
For all stock options granted in 2013, 2012 and 2011, volatility was based on an analysis of historical stock prices and implied volatilities of publicly-traded companies with similar characteristics, including industry, stage of life cycle, size, financial leverage, as well as the implied volatilities of VMware’s Class A common stock. The expected term was calculated based upon an analysis of the expected term of similar grants of comparable publicly-traded companies, the term of the purchase period for grants made under the ESPP, or the weighted-average remaining term for options assumed in acquisitions. For all periods presented, VMware’s expected dividend yield input was zero as it has not historically paid, nor expects in the future to pay, cash dividends on its common stock. The risk-free interest rate was based on a U.S. Treasury instrument whose term is consistent with the expected term of the stock options.

Restructuring_and_AcquisitionR

Restructuring and Acquisition-Related Charges	12 Months Ended
	Dec. 31, 2013
Restructuring and Related Activities [Abstract]	'
Restructuring and Acquisition-Related Charges	'
	Restructuring and Acquisition-Related Charges
	In 2013, 2012 and 2011, we incurred restructuring and acquisition-related charges of $224 million, $110 million and $97 million, respectively. In 2013, EMC incurred $139 million of restructuring charges, primarily related to our current year restructuring programs and $8 million of charges in connection with acquisitions for financial, advisory, legal and accounting services. In 2012, EMC incurred $101 million of net restructuring charges, comprising of $109 million related to our 2012 restructuring programs and an adjustment of $8 million related to other programs. In addition, we incurred $9 million of charges in connection with acquisitions for financial, advisory, legal and accounting services. In 2011, EMC incurred $86 million of restructuring charges, of which $63 million primarily related to our 2011 restructuring program, and $11 million of charges in connection with acquisitions for financial, advisory, legal and accounting services. In 2013, VMware incurred $54 million of restructuring charges related to workforce reductions as part of its current year restructuring program and $5 million of charges in connection with acquisitions for financial, advisory, legal and accounting services. In addition, VMware incurred $18 million of impairment charges related to its business realignment in 2013. VMware had no such charges in 2012 or 2011.
	During 2013, 2012 and 2011, EMC implemented restructuring programs to create further operational efficiencies which will result or have resulted in workforce reductions of approximately 1,917, 1,163 and 787 positions, respectively. The actions impact positions around the globe covering our Information Storage, RSA Information Security and Information Intelligence Group segments. All of these actions are expected to be completed or were completed within a year of the start of each program.
	During 2013, VMware approved and initiated a business realignment plan to streamline its operations. The plan included the elimination of approximately 710 positions across all major functional groups and geographies. All of these actions are expected to be completed within a year of the start of the program.
	During 2013, 2012 and 2011, we recognized $18 million, $21 million and $26 million, respectively, of lease termination costs for facilities vacated in the period in accordance with our plan as part of all of our restructuring programs and for costs associated with terminating other contractual obligations. These costs are expected to be utilized by the end of 2015. The remaining cash portion owed for these programs in 2014 is approximately $9 million, plus an additional $5 million over the period from 2015 and beyond.
	In January 2014, EMC announced a restructuring plan which consists of a reduction in force impacting our Information Storage, RSA Information Security and Information Intelligence Group segments which will be substantially completed by the end of the first quarter of 2014 and fully completed by the end of 2014. The total charge resulting from this plan is expected to be approximately $100 million to $120 million, with total cash payments associated with the plan expected to be in the range of $95 million to $114 million.
	The activity for the restructuring programs is presented below (tables in millions):
	Twelve Months Ended, December 31, 2013:
	2013 EMC Program
	Category	Balance as of December 31, 2012		2013 Charges			Utilization			Balance as of December 31, 2013
	Workforce reductions	$	—	$	130		$	(82	)	$	48
	Consolidation of excess facilities and other contractual obligations	—		7			(6		)	1
	Total	$	—	$	137		$	(88	)	$	49
	2013 VMware Program
	Category	Balance as of December 31, 2012		2013 Charges			Utilization			Balance as of December 31, 2013
	Workforce reductions	$	—	$	54		$	(54	)	$	—
	Consolidation of excess facilities and other contractual obligations	—		—			—			—
	Total	$	—	$	54		$	(54	)	$	—
	Other EMC Programs
	Category	Balance as of December 31, 2012		Adjustments to the Provision			Utilization			Balance as of December 31, 2013
	Workforce reductions	$	63	$	(9	)	$	(36	)	$	18
	Consolidation of excess facilities and other contractual obligations	28		11			(16		)	23
	Total	$	91	$	2		$	(52	)	$	41
	Twelve Months Ended, December 31, 2012:
	Category	Balance as of December 31, 2011		2012			Utilization			Balance as of December 31, 2012
				Charges
	Workforce reductions	$	50	$	80		$	(67	)	$	63
	Consolidation of excess facilities and other contractual obligations	30		21			(23		)	28
	Total	$	80	$	101		$	(90	)	$	91
	Twelve Months Ended, December 31, 2011:
	Category	Balance as of		2011			Utilization			Balance as of December 31, 2011
		31-Dec-10		Charges
	Workforce reductions	$	54	$	60		$	(64	)	$	50
	Consolidation of excess facilities and other contractual obligations	28		26			(24		)	30
	Total	$	82	$	86		$	(88	)	$	80
	In connection with VMware's business realignment plan, during the year ended December 31, 2013, VMware recognized cumulative pre-tax gains of $44 million relating to the disposition of certain lines of business that were no longer aligned with VMware's core business priorities. These cumulative pre-tax gains included a pre-tax gain of $12 million from the sale of certain assets relating to a previous acquisition, Zimbra, in exchange for cash and equity. The gains recognized in connection with these dispositions were recorded to other income (expense), net on the consolidated income statements for the year ended December 31, 2013.

Related_Party_Transactions

Related Party Transactions	12 Months Ended
	Dec. 31, 2013
Related Party Transactions [Abstract]	'
Related Party Transactions	'
	Related Party Transactions
	In 2013, 2012 and 2011, we leased certain real estate from a company owned by a member of our Board of Directors and such Director’s siblings, for which payments aggregated approximately $5 million in each year. Such lease was initially assumed by us as a result of our acquisition of Data General in 1999 and renewed in 2003 for a ten-year term. We are currently in the process of vacating the facility and do not intend to renew the lease upon its expiration in September 2014.
	In accordance with its written policy and procedures relating to related person transactions, EMC’s Audit Committee has approved the above transaction.
	EMC is a large global organization which engages in thousands of purchase, sales and other transactions annually. We enter into purchase and sales transactions with other publicly-traded and privately-held companies, universities, hospitals and not-for-profit organizations with which members of our Board of Directors or executive officers are affiliated. We enter into these arrangements in the ordinary course of our business.
	From time to time, we make strategic investments in publicly-traded and privately-held companies that develop software, hardware and other technologies or provide services supporting our technologies. We may purchase from or make sales to these organizations.
	We believe that the terms of each of these arrangements described above were fair and not less favorable to us than could have been obtained from unaffiliated parties.

Segment_Information

Segment Information	12 Months Ended
	Dec. 31, 2013
Segment Reporting [Abstract]	'
Segment Information	'
	Segment Information
	We manage the Company as three federated businesses: EMC Information Infrastructure, VMware Virtual Infrastructure and Pivotal. EMC Information Infrastructure operates in three segments: Information Storage, Information Intelligence Group and RSA Information Security while VMware Virtual Infrastructure and Pivotal operate as single segments.
	During the second quarter of 2013, EMC and VMware formed Pivotal to build a new platform comprising next-generation data fabrics, application fabrics and a cloud-independent platform-as-a-service ("PaaS"). EMC contributed substantially all assets and liabilities, including intellectual property and employees, related to its Greenplum and Pivotal Labs businesses. VMware contributed substantially all assets and liabilities, including intellectual property and employees, related to certain of its Cloud Application Platform products and services, including Cloud Foundry, Spring, Cetas, GemFire and other products from the VMware vFabric Suite. These contributions were recorded at the April 1, 2013 carrying value as this was a transaction with entities under common control.
	On May 8, 2013, GE purchased 10% of Pivotal's outstanding equity for approximately $105 million. At December 31, 2013, EMC consolidated held approximately 84% of the economic interest in Pivotal.  GE's interest in Pivotal is in the form of a preferred equity instrument. Consequently, there is no net income attributable to non-controlling interest related to Pivotal on the consolidated income statements.
	Beginning in the second quarter of 2013, EMC began presenting Pivotal as a separate reportable segment. We recast the segment disclosures for the prior financial reporting periods to separately present the operations of the Pivotal segment which has resulted in the transfer of revenue, gross profit, operating expenses and operating income from the Information Storage and VMware Virtual Infrastructure segments to Pivotal. These changes had no impact on the previously reported financial results for the Information Intelligence Group or RSA Information Security segments. In addition, none of these changes impacted our previously reported consolidated financial statements.
	Our management measures are designed to assess performance of these reporting segments excluding certain items. As a result, the corporate reconciling items are used to capture the items excluded from the segment operating performance measures, including stock-based compensation expense and acquisition-related intangible asset amortization expense. Additionally, in certain instances, infrequently occurring gains or losses are also excluded from the measures used by management in assessing segment performance. Research and development expenses, selling, general and administrative expenses and restructuring and acquisition-related charges associated with the EMC Information Infrastructure business are not allocated to the segments within the EMC Information Infrastructure business, as they are managed centrally at the EMC Information Infrastructure business level. EMC Information Infrastructure and Pivotal have not been allocated non-operating income (expense), net and income tax expense as these costs are managed centrally at the EMC corporate level. Accordingly, for the three segments within the EMC Information Infrastructure business, gross profit is the segment operating performance measure, while for Pivotal, operating income is the operating performance measure. The VMware Virtual Infrastructure amounts represent the revenues and expenses of VMware as reflected within EMC’s consolidated financial statements.
	Our segment information for the years ended 2013, 2012 and 2011 are as follows (tables in millions, except percentages):
		EMC Information Infrastructure
		Information			Information			RSA			EMC			Pivotal			EMC Information Infrastructure plus Pivotal
		Storage			Intelligence			Information			Information
					Group			Security			Infrastructure
	2013
	Revenues:
	Product revenues	$	10,694		$	180		$	453		$	11,327		$	110		$	11,437
	Services revenues	5,438			467			534			6,439			199			6,638
	Total consolidated revenues	16,132			647			987			17,766			309			18,075
	Gross profit	$	9,082		$	419		$	655		$	10,156		$	118		$	10,274
	Gross profit percentage	56.3		%	64.8		%	66.4		%	57.2		%	38		%	56.8		%
	Research and development										1,453			117			1,570
	Selling, general and administrative										4,567			165			4,732
	Restructuring and acquisition-related charges										—			—			—
	Total costs and expenses										6,020			282			6,302
	Operating income (loss)										$	4,136		$	(164	)	$	3,972
		EMC			VMware			Corp			Consolidated
		Information			Virtual			Reconciling
		Infrastructure plus Pivotal			Infrastructure			Items
					within EMC
	2013
	Revenues:
	Product revenues	$	11,437		$	2,253		$	—		$	13,690
	Services revenues	6,638			2,894			—			9,532
	Total consolidated revenues	18,075			5,147			—			23,222
	Gross profit	$	10,274		$	4,589		$	(390	)	$	14,473
	Gross profit percentage	56.8		%	89.2		%	—			62.3		%
	Research and development	1,570			826			365			2,761
	Selling, general and administrative	4,732			2,003			603			7,338
	Restructuring and acquisition-related charges	—			—			224			224
	Total costs and expenses	6,302			2,829			1,192			10,323
	Operating income	3,972			1,760			(1,582		)	4,150
	Non-operating income (expense)	(336		)	22			29			(285		)
	Income tax provision	911			317			(456		)	772
	Net income	2,725			1,465			(1,097		)	3,093
	Net income attributable to the non-controlling interest in VMware, Inc.	—			(297		)	93			(204		)
	Net income attributable to EMC Corporation	$	2,725		$	1,168		$	(1,004	)	$	2,889
		EMC Information Infrastructure
		Information			Information			RSA			EMC			Pivotal			EMC Information Infrastructure plus Pivotal
		Storage			Intelligence			Information			Information
					Group			Security			Infrastructure
	2012
	Revenues:
	Product revenues	$	10,283		$	200		$	414		$	10,897		$	106		$	11,003
	Services revenues	5,157			440			475			6,072			164			6,236
	Total consolidated revenues	15,440			640			889			16,969			270			17,239
	Gross profit	$	8,860		$	432		$	604		$	9,896		$	153		$	10,049
	Gross profit percentage	57.4		%	67.5		%	68		%	58.3		%	56.7		%	58.3		%
	Research and development										1,402			124			1,526
	Selling, general and administrative										4,484			155			4,639
	Restructuring and acquisition-related charges										—			—			—
	Total costs and expenses										5,886			279			6,165
	Operating income (loss)										$	4,010		$	(126	)	$	3,884
		EMC			VMware			Corp			Consolidated
		Information			Virtual			Reconciling
		Infrastructure plus Pivotal			Infrastructure			Items
			within EMC
2012
Revenues:
Product revenues	$	11,003		$	2,058		$	—		$	13,061
Services revenues	6,236			2,417			—			8,653
Total consolidated revenues	17,239			4,475			—			21,714
Gross profit	$	10,049		$	3,976		$	(387	)	$	13,638
Gross profit percentage	58.3		%	88.9		%	—			62.8		%
Research and development	1,526			700			334			2,560
Selling, general and administrative	4,639			1,739			626			7,004
Restructuring and acquisition-related charges	—			—			110			110
Total costs and expenses	6,165			2,439			1,070			9,674
Operating income	3,884			1,537			(1,457		)	3,964
Non-operating income (expense)	(177		)	27			(10		)	(160		)
Income tax provision	968			271			(321		)	918
Net income	2,739			1,293			(1,146		)	2,886
Net income attributable to the non-controlling interest in VMware, Inc.	—			(255		)	102			(153		)
Net income attributable to EMC Corporation	$	2,739		$	1,038		$	(1,044	)	$	2,733
	EMC Information Infrastructure
	Information			Information			RSA			EMC			Pivotal			EMC Information Infrastructure plus Pivotal
	Storage			Intelligence			Information			Information
				Group			Security			Infrastructure
2011
Revenues:
Product revenues	$	10,042		$	209		$	441		$	10,692		$	76		$	10,768
Services revenues	4,642			452			387			5,481			54			5,535
Total consolidated revenues	14,684			661			828			16,173			130			16,303
Gross profit	$	8,291		$	425		$	470		$	9,186		$	76		$	9,262
Gross profit percentage	56.5		%	64.2		%	56.8		%	56.8		%	58.6		%	56.8		%
Research and development										1,216			70			1,286
Selling, general and administrative										4,348			120			4,468
Restructuring and acquisition-related charges										—			—			—
Total costs and expenses										5,564			190			5,754
Operating income (loss)										$	3,622		$	(114	)	$	3,508
	EMC			VMware			Corp			Consolidated
	Information			Virtual			Reconciling
	Infrastructure plus Pivotal			Infrastructure			Items
				within EMC
2011
Revenues:
Product revenues	$	10,768		$	1,823		$	—		$	12,591
Services revenues	5,535			1,882			—			7,417
Total consolidated revenues	16,303			3,705			—			20,008
Gross profit	$	9,262		$	3,189		$	(282	)	$	12,169
Gross profit percentage	56.8		%	86.1		%	—			60.8		%
Research and development	1,286			550			315			2,151
Selling, general and administrative	4,468			1,430			581			6,479
Restructuring and acquisition-related charges	—			—			97			97
Total costs and expenses	5,754			1,980			993			8,727
Operating income	3,508			1,209			(1,275		)	3,442
Non-operating income (expense)	(252		)	7			52			(193		)
Income tax provision	805			134			(299		)	640
Net income	2,451			1,082			(924		)	2,609
Net income attributable to the non-controlling interest in VMware, Inc.	—			(209		)	61			(148		)
Net income attributable to EMC Corporation	$	2,451		$	873		$	(863	)	$	2,461
Our revenues are attributed to the geographic areas according to the location of the customers. Revenues by geographic area are included in the following table (table in millions):
	2013			2012			2011
United States	$	12,230		$	11,510		$	10,550
Europe, Middle East and Africa	6,355			5,908			5,668
Asia Pacific and Japan	3,193			3,017			2,639
Latin America, Mexico and Canada	1,444			1,279			1,151
Total	$	23,222		$	21,714		$	20,008
No country other than the United States accounted for 10% or more of revenues in 2013, 2012 or 2011.
Long-lived assets, excluding financial instruments, deferred tax assets, goodwill and intangible assets, in the United States were $4,433 million at December 31, 2013 and $3,994 million at December 31, 2012. Internationally, long-lived assets, excluding financial instruments, deferred tax assets, goodwill and intangible assets, were $877 million at December 31, 2013 and $698 million at December 31, 2012. No country other than the United States accounted for 10% or more of total long-lived assets, excluding financial instruments and deferred tax assets, at December 31, 2013 or 2012.

Selected_Quarterly_Financial_D

Selected Quarterly Financial Data (Unaudited)	12 Months Ended
	Dec. 31, 2013
Quarterly Financial Information Disclosure [Abstract]	'
Selected Quarterly Financial Data (Unaudited)	'
	Selected Quarterly Financial Data (unaudited)
	Quarterly financial data for 2013 and 2012 is as follows (tables in millions, except per share amounts):
	2013	Q1 2013		Q2 2013		Q3 2013		Q4 2013
	Revenues	$	5,387	$	5,614	$	5,539	$	6,682
	Gross profit	3,298		3,509		3,442		4,224
	Net income attributable to EMC Corporation	580		701		586		1,022
	Net income per weighted average share, diluted: common shareholders	$	0.26	$	0.32	$	0.27	$	0.48
	2012	Q1 2012		Q2 2012		Q3 2012		Q4 2012
	Revenues	$	5,094	$	5,311	$	5,278	$	6,030
	Gross profit	3,113		3,347		3,288		3,890
	Net income attributable to EMC Corporation	587		650		626		870
	Net income per weighted average share, diluted: common shareholders	$	0.27	$	0.29	$	0.28	$	0.39
	The first quarter of 2013 includes the benefit of the R&D tax credit for 2012 of $60 million, or $0.03 per diluted share. The second and third quarters of 2013 each include net gains on VMware's disposition of certain lines of business of $10 million and $11 million or $0.01 and $0.01 per diluted share, respectively. The third and fourth quarters of 2013 also include special tax items related to our tax-related reorganizations of $23 million or $0.01 per diluted share and a tax benefit of $4 million or $0.00 per diluted share, respectively.
	The second quarter of 2012 includes a benefit related to the release of the residual reserve for expansion of customer remediation programs resulting from a cyber attack on RSA of $18 million or $0.01 per diluted share, after tax. In addition, the second quarter of 2012 includes an after-tax charge related to a loss on interest rate swaps of $24 million or $0.01 per diluted share as well as an after-tax realized gain related to the gain on our XtremIO strategic investment of $32 million or $0.01 per diluted share in connection with our acquisition of XtremIO. The fourth quarter of 2012 includes special tax items related to our tax-related reorganizations of $11 million or $0.01 per diluted share.

Subsequent_Events

Subsequent Events	12 Months Ended
	Dec. 31, 2013
Subsequent Events [Abstract]	'
Subsequent Events	'
	Subsequent Events
	2014 Acquisition
	On February 24, 2014, VMware acquired A.W.S. Holding, LLC, the sole member and equity holder of AirWatch LLC ("AirWatch"). AirWatch is a leader in enterprise mobile management and security solutions. This acquisition expands VMware's portfolio of mobile solutions.
	The estimated consideration includes approximately $1,181 million in cash and approximately $364 million of installment payments and assumed unvested equity.
	Restructuring
	In January 2014, EMC announced a restructuring plan which consists of a reduction in force impacting our Information Storage, RSA Information Security and Information Intelligence Group segments which will be substantially completed by the end of the first quarter of 2014 and fully completed by the end of 2014. The total charge resulting from this plan is expected to be approximately $100 million to $120 million, with total cash payments associated with the plan expected to be in the range of $95 million to $114 million.

Schedule_II_Valuation_and_Qual

Schedule II - Valuation and Qualifying Accounts	12 Months Ended
	Dec. 31, 2013
Valuation and Qualifying Accounts [Abstract]	'
Schedule II - Valuation and Qualifying Accounts	'
	Accounts and Notes Receivable and Allowance for Credit Losses
	Accounts and notes receivable are recorded at cost. The portion of our notes receivable due in one year or less are included in accounts and notes receivable and the long-term portion is included in other assets, net on the consolidated balance sheets. Lease receivables arise from sales-type leases of products. We typically sell, without recourse, the contractual right to the lease payment stream and assets under lease to third parties. For certain customers, we retain the lease.
	The contractual amounts due under the leases we retained as of December 31, 2013 were as follows (table in millions):
	Year	Contractual Amounts
		Due Under Leases
	Due within one year	$	103
	Due within two years	80
	Due within three years	68
	Thereafter	1
	Total	252
	Less amounts representing interest	(5		)
	Present value	247
	Current portion (included in accounts and notes receivable)	101
	Long-term portion (included in other assets, net)	$	146
	Subsequent to December 31, 2013, we sold $34 million of these notes to third parties without recourse.
	We maintain an allowance for credit losses on our accounts and notes receivable. The allowance is based on the credit worthiness of our customers, including an assessment of the customer’s financial position, operating performance and their ability to meet their contractual obligation. We assess the credit scores for our customers each quarter. In addition, we consider our historical experience, the age of the receivable and current market and economic conditions. Uncollectible amounts are charged against the allowance account.
	In the event we determine that a lease may not be paid, we include in our allowance an amount for the outstanding balance related to the lease receivable. As of December 31, 2013, amounts from lease receivables past due for more than 90 days were not significant.
	The following table presents the activity of our allowance for credit losses related to lease receivables for the years ended December 31, 2013 and 2012 (table in millions):
		December 31,			December 31,
		2013			2012
	Balance, beginning of the period	$	17		$	24
	Recoveries	(12		)	(15		)
	Provisions	4			8
	Balance, end of the period	$	9		$	17
	Gross lease receivables totaled $252 million and $329 million in 2013 and 2012, respectively, before the allowance. The components of these balances were individually evaluated for impairment and included in our allowance determination as necessary.
	EMC CORPORATION AND SUBSIDIARIES
	SCHEDULE II–VALUATION AND QUALIFYING ACCOUNTS
	(in millions)
	Allowance for Bad Debts	Balance at Beginning of Period			Allowance for Bad Debts Charged to Selling, General and Administrative Expenses			Bad Debts			Balance at
	Description							Write-Offs			End of Period
	Year ended December 31, 2013 allowance for doubtful accounts	$	72		$	(1	)	$	(6	)	$	65
	Year ended December 31, 2012 allowance for doubtful accounts	65			39			(32		)	72
	Year ended December 31, 2011 allowance for doubtful accounts	61			20			(16		)	65
	Note: The allowance for doubtful accounts includes both current and non-current portions.
	Allowance for Sales Returns	Balance at Beginning of Period			Allowance for Sales Returns Accounted for as a Reduction in Revenue			Sales Returns			Balance at
	Description										End of Period
	Year ended December 31, 2013 allowance for sales returns	$	86		$	55		$	(65	)	$	76
	Year ended December 31, 2012 allowance for sales returns	133			17			(64		)	86
	Year ended December 31, 2011 allowance for sales returns	158			19			(44		)	133
	Tax Valuation Allowance	Balance at Beginning of Period			Tax Valuation Allowance Charged to Income Tax Provision			Tax Valuation Allowance Credited to Income Tax Provision			Balance at
	Description										End of Period
	Year ended December 31, 2013 income tax valuation allowance	$	183		$	32		$	(4	)	$	211
	Year ended December 31, 2012 income tax valuation allowance	151			33			(1		)	183
	Year ended December 31, 2011 income tax valuation allowance	126			25			—			151

Summary_of_Significant_Account1

Summary of Significant Accounting Policies (Policies)	12 Months Ended
	Dec. 31, 2013
Organization, Consolidation and Presentation of Financial Statements [Abstract]	'
Company	'
	Company
	EMC Corporation ("EMC") and its subsidiaries develop, deliver and support the information technology ("IT") industry’s broadest range of information infrastructure and virtual infrastructure technologies, solutions and services. EMC manages the Company as part of a federation of three businesses: EMC Information Infrastructure, VMware Virtual Infrastructure and Pivotal.
	EMC’s Information Infrastructure business provides a foundation for organizations to store, manage, protect, analyze and secure ever-increasing quantities of information, while at the same time improving business agility, lower cost, and enhancing competitive advantage. These benefits are primarily achieved though virtualization. EMC’s Information Infrastructure business comprises three segments – Information Storage, RSA Information Security and Information Intelligence Group.
	EMC’s VMware Virtual Infrastructure business, which is represented by EMC’s majority equity stake in VMware, Inc. ("VMware"), is the leader in virtualization infrastructure solutions utilized by organizations to help them transform the way they build, deliver and consume IT resources. VMware’s virtualization infrastructure solutions, which include a suite of products designed to deliver a software-defined data center, run on industry-standard desktop computers and servers and support a wide range of operating system and application environments, as well as networking and storage infrastructures.
	EMC's Pivotal business ("Pivotal") was formed in the second quarter of 2013. Pivotal unites strategic technology, people and programs formerly within EMC and VMware, including Greenplum, Cloud Foundry, Spring, Cetas, Pivotal Labs, GemFire and other products. Pivotal is building a new platform comprising next-generation data fabrics, application fabrics and a cloud independent PaaS.
Accounting Principles	'
	Accounting Principles
	The financial statements and accompanying notes are prepared in accordance with accounting principles generally accepted in the United States of America (“GAAP”).
Principles of Consolidation	'
	Principles of Consolidation
	These consolidated financial statements include the accounts of EMC, its wholly-owned subsidiaries, and Pivotal and VMware, companies which are majority-owned by EMC. All intercompany transactions have been eliminated.
	EMC’s interest in VMware was approximately 80% at both December 31, 2013 and 2012. VMware’s financial results have been consolidated with that of EMC for all periods presented as EMC is VMware’s controlling stockholder. The portion of the results of operations of VMware allocable to its other owners is shown as net income attributable to the non-controlling interest in VMware, Inc. on EMC’s consolidated income statements. Additionally, the cumulative portion of the results of operations of VMware allocable to its other owners, along with the interest in the net assets of VMware attributable to those other owners, is shown as a component of non-controlling interests on EMC's consolidated balance sheets and as a reduction of net income attributable to EMC shareholders.
	EMC's economic interest in Pivotal was approximately 84% at December 31, 2013. Pivotal's financial results have been consolidated with that of EMC for all periods presented. The non-controlling interests' share of equity in Pivotal is reflected as a component of the non-controlling interests in EMC's consolidated balance sheets and as a reduction of net income attributable to EMC shareholders. Because the non-controlling interest in Pivotal is in the form of a preferred equity instrument, there is no net income attributable to non-controlling interest related to Pivotal on EMC's consolidated income statements.
Use of Accounting Estimates	'
	Use of Accounting Estimates
	The preparation of financial statements in conformity with GAAP requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities at the date of the financial statements, the reported amounts of revenues and expenses during the reporting period and the disclosure of contingent assets and liabilities at the date of the financial statements. Actual results could differ from those estimates.
Revenue Recognition	'
	Revenue Recognition
	We derive revenue from sales of information systems, software and services. We recognize revenue when persuasive evidence of an arrangement exists, delivery has occurred, the sales price is fixed or determinable and collectability is reasonably assured. This policy is applicable to all sales, including sales to resellers and end users. Delivery is achieved when our product has been physically shipped or made available by electronic delivery and the risk of loss has been transferred which, for most of our product sales, occurs upon shipment. The following summarizes the major terms of our contractual relationships with our customers and the manner in which we account for sales transactions.
	•	Systems sales
	Systems sales consist of the sale of storage hardware, required system software and other hardware-related devices. Revenue for systems sales is generally recognized upon shipment.
	•	Software sales
	Software sales consist of the sale of optional, stand-alone software applications. Our software applications provide customers with resource management, backup and archiving, information security, information management and intelligence, data analytics and server virtualization capabilities. Revenue for software is generally recognized upon shipment or electronic delivery. License revenue from royalty payments is recognized upon either receipt of royalty reports or payments from third parties.
	•	Services revenue
	Services revenue consists of installation services, professional services, software maintenance, hardware maintenance, software as a service subscriptions and training.
	We recognize revenue from fixed-price support or maintenance contracts sold for both hardware and software, including extended warranty contracts, ratably over the contract period and recognize the costs associated with these contracts as incurred. Generally, installation and professional services are not considered essential to the functionality of our products as these services do not alter the product capabilities and may be performed by our customers or other vendors. Installation services revenues are recognized as the services are being performed. Professional services revenues on engagements for which reasonably dependable estimates of progress toward completion are capable of being made are recognized using the proportional performance method, which recognizes revenue based on labor costs incurred in proportion to total expected labor costs to perform the service. Where services are considered essential to the functionality of our products, revenue for the products and services is recorded over the service period. Professional services engagements that are on a time and materials basis are recognized based upon the labor costs incurred. Revenues on all other professional services engagements are recognized upon completion.
	•	Multiple element arrangements
	When more than one element, such as hardware, software and services are contained in a single arrangement, we first allocate revenue based upon the relative selling price into two categories: (1) non-software components, such as hardware and any hardware-related items, such as required system software that functions with the hardware to deliver the essential functionality of the hardware and related post-contract customer support, software as a service subscriptions and other services and (2) software components, such as optional software applications and related items, such as post-contract customer support and other services. We then allocate revenue within the non-software category to each element based upon their relative selling price using estimated selling prices (“ESP”) if vendor-specific objective evidence (“VSOE”) or third-party evidence of selling price (“TPE”) does not exist. We allocate revenue within the software category to the undelivered elements based upon their fair value using VSOE with the residual revenue allocated to the delivered elements. If we cannot objectively determine the VSOE of the fair value of any undelivered software element, we defer revenue until all elements are delivered and services have been performed, or until fair value can objectively be determined for any remaining undelivered elements.
	We allocate the amount of revenue recognition for delivered elements to the amount that is not subject to forfeiture or refund or contingent on the future delivery of products or services.
	Customers under software maintenance agreements are entitled to receive updates and upgrades on a when-and-if-available basis, and various types of technical support based on the level of support purchased. In the event specific features, functionality, entitlements, or the release version of an upgrade or new product have been announced but not delivered, and customers will receive that upgrade or new product as part of a current software maintenance contract, a specified upgrade is deemed created and product revenues are deferred on purchases made after the announcement date until delivery of the upgrade or new product. The amount and elements to be deferred are dependent on whether we have established VSOE of fair value for the upgrade or new product.
	•	Indirect channel sales
	We market and sell our products through our direct sales force and indirect channels such as independent distributors and value-added resellers. For substantially all of our indirect sales, we recognize revenues on products sold to resellers and distributors on a sell through basis. These product sales are evidenced by a master distribution agreement, together with evidence of an end-user arrangement, on a transaction-by-transaction basis.
	We offer rebates to certain channel partners. We generally recognize the amount of the rebates as a reduction of revenues when the underlying revenue is recognized. We also offer marketing development funds to certain channel partners. We generally record the amount of the marketing development funds, based on the maximum potential liability, as a marketing expense as the funds are earned by the channel partners.
	•	Shipping terms
	Our sales contracts generally provide for the customer to accept risk of loss when the product leaves our facilities. When shipping terms or local laws do not allow for passage of risk of loss at shipping point, we defer recognizing revenue until risk of loss transfers to the customer.
	•	Leases
	Revenue from sales-type leases is recognized at the net present value of future lease payments. Revenue from operating leases is recognized over the lease period.
	•	Other
	We accrue for the estimated costs of systems’ warranty at the time of sale. We reduce revenue for estimated sales returns at the time of sale. Systems’ warranty costs are estimated based upon our historical experience and specific identification of systems’ requirements. Sales returns are estimated based upon our historical experience and specific identification of probable returns.
Deferred Revenue	'
	Deferred Revenue
	Our deferred revenue consists primarily of deferred hardware and software maintenance and unearned license fees, which are recognized ratably over the contract term as either product or services revenue depending on the nature of the item, and deferred professional services, including education and training, which are recognized in services revenue as the services are provided.
Shipping and Handling Costs	'
	Shipping and Handling Costs
	Shipping and handling costs are classified in cost of product sales.
Foreign Currency Translation	'
	Foreign Currency Translation
	The local currency is the functional currency of the majority of our subsidiaries. Assets and liabilities are translated into U.S. dollars at exchange rates in effect at the balance sheet date. Income and expense items are translated at daily rates.
	Gains and losses from foreign currency transactions are included in other income (expense), net, and consist of net losses of $2 million in 2013, $16 million in 2012 and $13 million in 2011. Foreign currency translation adjustments are included in other comprehensive income (loss).
Derivatives	'
	Derivatives
	We use derivatives to hedge foreign currency exposures related to foreign currency denominated assets and liabilities and forecasted revenue and expense transactions.
	We hedge our exposure in foreign currency denominated monetary assets and liabilities with foreign currency forward and option contracts. Since these derivatives hedge existing exposures that are denominated in foreign currencies, the contracts do not qualify for hedge accounting. Accordingly, these outstanding non-designated derivatives are recognized on the consolidated balance sheet at fair value and the changes in fair value from these contracts are recorded in other income (expense), net, in the consolidated income statements. These derivative contracts mature in less than one year.
	We also use foreign currency forward and option contracts to hedge our exposure on a portion of our forecasted revenue and expense transactions. These derivatives are designated as cash flow hedges. We did not have any derivatives designated as fair value hedges as of December 31, 2013. All outstanding cash flow hedges are recognized on the consolidated balance sheets at fair value with changes in their fair value recorded in accumulated other comprehensive income (loss) until the underlying forecasted transactions occur. To achieve hedge accounting, certain criteria must be met, which includes (i) ensuring at the inception of the hedge that formal documentation exists for both the hedging relationship and the entity’s risk management objective and strategy for undertaking the hedge, and (ii) at the inception of the hedge and on an ongoing basis, the hedging relationship is expected to be highly effective in achieving offsetting changes in fair value attributed to the hedged risk during the period that the hedge is designated. Further, an assessment of effectiveness is required at a minimum on a quarterly basis. Absent meeting these criteria, changes in fair value are recognized currently in other expense, net, in the consolidated income statements. Once the underlying forecasted transaction occurs, the gain or loss from the derivative designated as a hedge of the transaction is reclassified from accumulated other comprehensive income (loss) to the consolidated income statements, in the related revenue or expense caption, as appropriate. In the event the underlying forecasted transaction does not occur, the amount recorded in accumulated other comprehensive income (loss) will be reclassified to other income (expense), net, in the consolidated income statements in the then-current period. Any ineffective portion of the derivatives designated as cash flow hedges is recognized in current earnings. The ineffective portion of the derivatives includes gains or losses associated with differences between actual and forecasted amounts. Our cash flow hedges generally mature within six months or less. The notional amount of cash flow hedges outstanding as of December 31, 2013, 2012 and 2011 were $384 million, $201 million and $194 million, respectively.
	We do not engage in currency speculation. For purposes of presentation within the consolidated statement of cash flows, derivative gains and losses are presented within net cash provided by operating activities.
	In 2010, EMC entered into interest rate swap contracts with an aggregate notional amount of approximately $900 million. These swaps were designated as cash flow hedges of the semi-annual interest payments of the forecasted issuance of debt in 2011 when our $1.725 billion 1.75% convertible senior notes due 2011 (the "2011 Notes") were scheduled to become due. As such, the unrealized loss on these hedges was recognized in other comprehensive loss. In November 2011, we settled the swaps and replaced them with new interest rate swap contracts for the forecasted issuance of debt in 2012. In April 2012, we settled the swaps and replaced them with new interest rate swap contracts for the forecasted issuance of debt in 2012. Each of these new swaps was deemed as an effective hedge as the notional amounts and other terms matched the underlying hedged item. Losses on the interest rate swap contracts at the time of settlement of $141 million in November 2011 and $23 million in April 2012 were deferred as they were expected to be realized over the life of the new debt issued under the related interest rate swap contracts and recognized as a component of interest expense in the consolidated income statements.
	In June 2012, management changed its forecast date for the issuance of debt from December 31, 2012 to the first quarter of 2014. Consequently, hedge accounting effectively ceased as the terms of the swaps no longer matched the terms of the underlying hedged item resulting in changes in the fair value of the swaps being recorded in the consolidated income statement. The swaps were subsequently re-designated as cash flow hedges and achieved hedge accounting. The change in the forecasted timeframe for the issuance of debt resulted in certain previously anticipated hedge interest payments no longer being expected to occur within the window covered by the hedge designation. As a result, $40 million of accumulated realized losses in other comprehensive income related to these previously-anticipated interest payments was reclassified from other comprehensive income and recognized as a component of other income (expense), net in the 2012 consolidated income statements.
	In July 2012, we settled the interest rate swap contracts and did not replace them. Losses on the interest rate swap contracts at the time of settlement of $46 million were deferred as they were expected to be realized over the life of the new debt issued under the related interest rate swap contracts and recognized as a component of interest expense in the consolidated income statements.
	At December 31, 2013, we had $176 million of accumulated realized losses related to the settled swaps in accumulated other comprehensive income which will be realized during the life of our ten year senior notes issued in June 2013. These losses will be reclassified from other comprehensive income and recognized on a straight-line basis in the consolidated income statements as interest expense beginning in the third quarter of 2014.
	Our derivatives and their related activities are not material to our consolidated balance sheets or consolidated income statements.
Cash and Cash Equivalents	'
	Cash and Cash Equivalents
	Cash and cash equivalents include highly liquid investments with a maturity of ninety days or less at the time of purchase. Cash equivalents consist primarily of money market securities, U.S. treasury bills, U.S. agency discount notes and commercial paper. Cash equivalents are stated at fair value. See Note F.
Allowance for Doubtful Accounts	'
	Allowance for Doubtful Accounts
	We maintain an allowance for doubtful accounts for the estimated probable losses on uncollectible accounts and notes receivable. The allowance is based upon the creditworthiness of our customers, our historical experience, the age of the receivable and current market and economic conditions. Uncollectible amounts are charged against the allowance account. The allowance for doubtful accounts is maintained against both our current and non-current accounts and notes receivable balances. The balances in the allowance accounts at December 31, 2013 and 2012 were as follows (table in millions):
			December 31,
			2013		2012
	Current		$	62	$	68
	Non-current (included in other assets, net)		3		4
			$	65	$	72
Investments	'
	Investments
	Unrealized gains and temporary loss positions on investments classified as available-for-sale are included within accumulated other comprehensive income (loss), net of any related tax effect. Upon realization, those amounts are reclassified from accumulated other comprehensive income (loss) to investment income. Realized gains and losses and other-than-temporary impairments are reflected in the consolidated income statement in investment income. For investments accounted for utilizing the fair value option, changes to fair value are recognized in the consolidated income statement in non-operating other income (expense), net.
Inventories	'
	Inventories
	Inventories are stated at the lower of cost (first-in, first-out) or market, not in excess of net realizable value.
Property, Plant and Equipment	'
	Property, Plant and Equipment
	Property, plant and equipment are recorded at cost. Buildings under development are included in building construction in progress. Depreciation commences upon placing the asset in service and is recognized on a straight-line basis over the estimated useful lives of the assets, as follows:
	Furniture and fixtures			5-10 years
	Equipment and software			2-10 years
	Improvements			5-31 years
	Buildings			15-51 years
	Upon retirement or disposition, the asset cost and related accumulated depreciation are removed with any gain or loss recognized in the consolidated income statements. Repair and maintenance costs, including planned maintenance, are expensed as incurred.
Research and Development and Capitalized Software Development Costs	'
	Research and Development and Capitalized Software Development Costs
	Research and development ("R&D") costs are expensed as incurred. R&D costs include salaries and benefits, stock-based compensation, consultants, facilities related costs, material costs, depreciation and travel. Material software development costs incurred subsequent to establishing technological feasibility through the general release of the software products are capitalized. Technological feasibility is demonstrated by the completion of a detailed program design or working model, if no program design is completed. GAAP requires that annual amortization expense of the capitalized software development costs be the greater of the amounts computed using the ratio of gross revenue to a products’ total current and anticipated revenues, or the straight-line method over the products’ remaining estimated economic life. Capitalized costs are amortized over periods ranging from eighteen months to two years which represents the products’ estimated economic life.
	Following the release of vSphere 5 and the comprehensive suite of cloud infrastructure technologies in the third quarter of 2011, VMware determined that its go-to-market strategy had changed from single solutions to product suite solutions. As a result of this change in strategy, and the related increased importance of interoperability between VMware’s products, the length of time between achieving technological feasibility and general release to customers significantly decreased. For future releases, VMware expects its products to be available for general release soon after technological feasibility has been established. Given that the majority of VMware’s product offerings are expected to be suites or to have key components that interoperate with VMware’s other product offerings, the costs incurred subsequent to achievement of technological feasibility were not material in 2013 and 2012, and are expected to be immaterial in future periods. As of December 31, 2013, all of VMware's previously capitalized software development costs had been fully amortized.
	Unamortized software development costs were $762 million and $703 million at December 31, 2013 and 2012, respectively, and are included in other assets, net. Amortization expense was $427 million, $398 million and $380 million in 2013, 2012 and 2011, respectively. Amounts capitalized were $487 million, $432 million and $480 million in 2013, 2012 and 2011, respectively. The amounts capitalized include stock-based compensation which is not reflected in the consolidated statements of cash flows as it is a non-cash item.
Long-lived Assets	'
	Long-lived Assets
	Purchased intangible assets, other than goodwill, are amortized over their estimated useful lives which range from one to nineteen years. Intangible assets include goodwill, developed technology, trademarks and tradenames, customer relationships and customer lists, software licenses, patents, leasehold interest, in-process research and development (“IPR&D”) and other intangible assets, which include backlog, non-competition agreements and non-solicitation agreements. The intangible assets are amortized based on the pattern in which the economic benefits of the intangible assets are estimated to be realized. Goodwill is not amortized and is carried at its historical cost.
	We periodically review our long-lived assets for impairment. We initiate reviews for impairment whenever events or changes in business circumstances indicate that the carrying amount of the assets may not be fully recoverable or that the useful lives of these assets are no longer appropriate. Each impairment test, other than goodwill, is based on a comparison of the undiscounted cash flows to the recorded value of the asset. If an impairment is indicated, the asset is written down to its estimated fair value.
	We test goodwill for impairment in the fourth quarter of each year or more frequently if events or changes in circumstances indicate that the asset might be impaired. The test is based on a comparison of the reporting unit’s book value to its estimated fair market value. We perform both qualitative and quantitative tests of our goodwill.
Investments in Joint Ventures	'
	Investments in Joint Ventures
	We make investments in joint ventures. For each joint venture investment we consider the facts and circumstances in order to determine whether it qualifies for cost, equity or fair value method accounting or whether it should be consolidated.
	In 2009, Cisco and EMC formed VCE Company LLC (“VCE”), with investments from VMware and Intel. VCE, through Vblock infrastructure platforms, delivers an integrated IT offering that combines network, computing, storage, management, security and virtualization technologies for converged infrastructures and cloud based computing models.
	We consider VCE a variable interest entity. Authoritative guidance related to variable interest entities states that the primary beneficiary of a variable interest entity must have both of the following characteristics: (a) the power to direct the activities of a variable interest entity that most significantly will impact the entity’s economic performance; and (b) the obligation to absorb losses that could be potentially significant to the variable interest entity or the right to receive benefits from the entity that could potentially be significant to the variable interest entity. Since the power to direct the activities of VCE which most significantly impact its economic performance are determined by its board of directors, which is comprised of equal representation of EMC and Cisco, and all significant decisions require the approval of the minority shareholders, we have determined we are not the primary beneficiary, and as such we account for the investment under the equity method with our portion of the gains and losses recognized in other expense, net in the consolidated income statements.
Advertising	'
	Advertising
	Advertising costs are expensed as incurred. Advertising expense was $23 million, $30 million and $44 million in 2013, 2012 and 2011, respectively.
Legal Costs	'
	Legal Costs
	Legal costs incurred in connection with loss contingencies are recognized when the costs are probable of occurrence and can be reasonably estimated.
Income Taxes	'
	Income Taxes
	Deferred tax liabilities and assets are recognized for the expected future tax consequences of events that have been included in the financial statements or tax returns. Deferred tax liabilities and assets are determined based on the difference between the tax basis of assets and liabilities and their reported amounts using enacted tax rates in effect for the year in which the differences are expected to reverse. Tax credits are generally recognized as reductions of income tax provisions in the year in which the credits arise. The measurement of deferred tax assets is reduced by a valuation allowance if, based upon available evidence, it is more likely than not that some or all of the deferred tax assets will not be realized.
	Accounting for uncertainty in income taxes recognized in the financial statements is in accordance with accounting authoritative guidance, which prescribes a two-step process to determine the amount of tax benefit to be recognized. First, the tax position must be evaluated to determine the likelihood that it will be sustained upon external examination. If the tax position is deemed “more-likely-than-not” to be sustained, the tax position is then assessed to determine the amount of benefit to recognize in the financial statements. The amount of the benefit that may be recognized is the largest amount that has a greater than 50 percent likelihood of being realized upon ultimate settlement.
	We do not provide for a U.S. income tax liability on undistributed earnings of our foreign subsidiaries. The earnings of non-U.S. subsidiaries, which reflect full provision for non-U.S. income taxes, are currently indefinitely reinvested in non-U.S. operations or are expected to be remitted substantially free of additional tax.
Sales Taxes	'
	Sales Taxes
	Sales and other taxes collected from customers and subsequently remitted to government authorities are recorded as cash or accounts receivable with a corresponding offset recorded to sales taxes payable. These balances are removed from the consolidated balance sheet as cash is collected from the customers and remitted to the tax authority.
Earnings Per Share	'
	Earnings Per Share
	Basic net income per share is computed using the weighted-average number of shares of our common stock outstanding during the period. Diluted net income per share is computed using the weighted-average number of common and dilutive common equivalent shares outstanding during the period. Common equivalent shares consist of stock options, unvested restricted stock and restricted stock units, the shares issuable under our 2011 Notes and our 2013 Notes and the associated warrants. See Note E for further information regarding the 2011 Notes and 2013 Notes and the associated warrants and Note O for further information regarding the calculation of diluted net income per weighted-average share. Additionally, for purposes of calculating diluted net income per common share, net income is adjusted for the difference between VMware’s reported diluted and basic earnings per share, if any, multiplied by the number of shares of VMware held by EMC.
Retirement Benefits	'
	Retirement Benefits
	Pension cost for our domestic defined benefit pension plan is funded to the extent that the current pension cost is deductible for U.S. Federal tax purposes and to comply with the Employee Retirement Income Security Act and the General Agreement on Tariff and Trade Bureau additional minimum funding requirements. Net pension cost for our international defined benefit pension plans are generally funded as accrued.
Concentration of Risks	'
	Concentrations of Risks
	Financial instruments that potentially subject us to concentration of credit risk consist principally of bank deposits, money market investments, short- and long-term investments, accounts and notes receivable, and foreign currency exchange contracts. Deposits held with banks in the United States may exceed the amount of FDIC insurance provided on such deposits. Deposits held with banks outside the United States generally do not benefit from FDIC insurance. The majority of our day-to-day banking operations globally are maintained with Citibank. We believe that Citibank’s position as a primary clearing bank, coupled with the substantial monitoring of their daily liquidity, both by their internal processes and by the Federal Reserve and the FDIC, mitigate some of our risk.
	Our money market investments are placed with money market funds that are 2a-7 qualified. Rule 2a-7, adopted by the United States Securities and Exchange Commission (the "SEC") under the Investment Company Act of 1940, establishes strict standards for quality, diversity and maturity, the objective of which is to maintain a constant net asset value of a dollar. We limit our investments in money market funds to those that are primarily associated with large, money center financial institutions and limit our exposure to Prime funds. Our short- and long-term investments are invested primarily in investment grade securities, and we limit the amount of our investment in any single issuer.
	We provide credit to customers in the normal course of business. Credit is extended to new customers based on checks of credit references, credit scores and industry reputation. Credit is extended to existing customers based on prior payment history and demonstrated financial stability. The credit risk associated with accounts and notes receivables is generally limited due to the large number of customers and their broad dispersion over many different industries and geographic areas. We establish an allowance for the estimated uncollectible portion of our accounts and notes receivable. We customarily sell the notes receivable we derive from our leasing activity. Generally, we do not retain any recourse on the sale of these notes. Our sales are generally dispersed among a large number of customers, minimizing the reliance on any particular customer or group of customers.
	The counterparties to our foreign currency exchange contracts consist of a number of major financial institutions. In addition to limiting the amount of contracts we enter into with any one party, we monitor the credit quality of the counterparties on an ongoing basis.
	We purchase or license many sophisticated components and products from one or a limited number of qualified suppliers. If any of our suppliers were to cancel or materially change contracts or commitments with us or fail to meet the quality or delivery requirements needed to satisfy customer orders for our products, we could lose customer orders. We attempt to minimize this risk by finding alternative suppliers or maintaining adequate inventory levels to meet our forecasted needs.
Accounting for Stock-Based Compensation	'
	Accounting for Stock-Based Compensation
	We have selected the Black-Scholes option-pricing model to determine the fair value of our stock option awards. For stock options, restricted stock and restricted stock units, we recognize compensation cost on a straight-line basis over the awards’ vesting periods for those awards which contain only a service vesting feature. For awards with a performance condition vesting feature, when achievement of the performance condition is deemed probable, we recognize compensation cost on a graded-vesting basis over the awards’ expected vesting periods.
Reclassifications	'
	Reclassifications
	Certain prior year amounts have been reclassified to conform with the current year's presentation. During the second quarter of 2013, EMC and VMware combined certain operations to form Pivotal, with a cash investment from General Electric Company ("GE"). Pivotal is considered a separate reportable segment. We recast the segment disclosures for the prior financial reporting periods to separately present the operations of the Pivotal segment. None of the segment reclassifications impact EMC's previously reported consolidated financial statements. See Note S for further discussion of the segment reclassifications.
Recent Accounting Pronouncements	'
	Recent Accounting Pronouncements
	In July 2013, the Financial Accounting Standards Board ("FASB") issued new accounting guidance on the presentation of unrecognized tax benefits. This new guidance requires an entity to present an unrecognized tax benefit, or a portion of an unrecognized tax benefit, as a reduction to a deferred tax asset when a net operating loss carryforward, a similar tax loss or a tax credit carryforward exists, with limited exceptions. This new guidance is effective for the periods beginning after December 15, 2013, and should be applied prospectively with retroactive application permitted.  We do not expect it to have a material impact on our consolidated financial position, results of operations or cash flows.
	In March 2013, the FASB issued guidance that requires a parent company to release any related cumulative translation adjustment into net income only if the sale or transfer results in the complete or substantially complete liquidation of the foreign entity in which the subsidiary or group of assets had resided. This new guidance is effective beginning after December 15, 2013.  We do not anticipate that the adoption of this new guidance will have a material impact on our consolidated financial position, results of operations or cash flows.

Summary_of_Significant_Account2

Summary of Significant Accounting Policies (Tables)	12 Months Ended
	Dec. 31, 2013
Organization, Consolidation and Presentation of Financial Statements [Abstract]	'
Balances in the Allowance Accounts	'
	The balances in the allowance accounts at December 31, 2013 and 2012 were as follows (table in millions):
			December 31,
			2013			2012
	Current		$	62		$	68
	Non-current (included in other assets, net)		3			4
			$	65		$	72
Estimated Useful Lives of the Assets	'
	Depreciation commences upon placing the asset in service and is recognized on a straight-line basis over the estimated useful lives of the assets, as follows:
	Furniture and fixtures			5-10 years
	Equipment and software			2-10 years
	Improvements			5-31 years
	Buildings			15-51 years
	Property, plant and equipment consist of (table in millions):
		December 31,			December 31,
		2013			2012
	Furniture and fixtures	$	229		$	197
	Equipment and software	5,973			5,345
	Buildings and improvements	2,089			1,873
	Land	132			121
	Building construction in progress	215			197
		8,638			7,733
	Accumulated depreciation	(5,160		)	(4,588		)
		$	3,478		$	3,145

Noncontrolling_Interests_Table

Non-controlling Interests (Tables)	12 Months Ended
	Dec. 31, 2013
Noncontrolling Interest [Abstract]	'
Effect of Changes in Ownership Interest in VMware on Equity	'
	The effect of changes in our ownership interest in VMware on our equity was as follows (table in millions):
		For the Year Ended
		December 31,			December 31,
		2013			2012
	Net income attributable to EMC Corporation	$	2,889		$	2,733
	Transfers (to) from the non-controlling interest in VMware, Inc.:
	Increase in EMC Corporation’s additional paid-in-capital for VMware’s equity issuances	92			128
	Decrease in EMC Corporation’s additional paid-in-capital for VMware’s other equity activity	(565		)	(564		)
	Net transfers (to) from non-controlling interest	(473		)	(436		)
	Change from net income attributable to EMC Corporation and transfers from the non-controlling interest in VMware, Inc.	$	2,416		$	2,297

Acquisitions_Tables

Acquisitions (Tables)	12 Months Ended
	Dec. 31, 2013			Dec. 31, 2012			Dec. 31, 2013			Dec. 31, 2012
	All 2013 Acquisitions			2012 Acquisitions, excluding Nicira			All 2011 Acquisitions			VMware
										Nicira
Business Acquisition [Line Items]	'			'			'			'
Fair Value of Stock Options for Acquisitions, Weighted-Average Assumptions	'			'			'			'
	The fair value of our stock options for all of the aforementioned acquisitions in 2013 was estimated using the following weighted-average assumptions:			The fair value of our stock options for all of the aforementioned acquisitions, excluding Nicira, in 2012 was estimated assuming no expected dividends and the following weighted-average assumptions:
	Expected term (in years)	1.8		Expected term (in years)	1.9
	Expected volatility	26.4	%	Expected volatility	31.6	%
	Risk-free interest rate	0.3	%	Risk-free interest rate	0.3	%
	Dividend yield	1.5	%
Allocation of Purchase Price to Intangible Assets	'			'			'			'
	The following represents the aggregate allocation of the purchase price for all of the aforementioned acquisitions to intangible assets (table in millions):			The following represents the aggregate allocation of the purchase price for all of the aforementioned acquisitions, excluding Nicira, to intangible assets (table in millions):			The following represents the aggregate allocation of the purchase price for all the aforementioned acquisitions to intangible assets (table in millions):
	Developed technology (weighted-average useful life of 5 years)	$	138	Developed technology (weighted-average useful life of 4.8 years)	$	255	Developed technology (weighted-average useful life of 3.2 years)	$	98
	Customer relationships (weighted-average useful life of 4 years)	34		Customer relationships (weighted-average useful life of 6.1 years)	54		Customer relationships (weighted-average useful life of 4.0 years)	58
	IPR&D	10		Trademarks and tradenames (weighted-average useful life of 3.4 years)	2		Trademarks and tradenames (weighted-average useful life of 2.6 years)	1
	Total intangible assets	$	182	Total intangible assets	$	311	Total intangible assets	$	157
Allocation of Purchase Price	'			'			'			'
										The following table summarizes the allocation of the Nicira purchase price, adjusted in the fourth quarter of 2012 for a reassessment of unrecognized tax benefit (table in millions):
										Intangible assets:
										Purchased technology (weighted-average useful life of 7 years)	$	266
										Trademarks and tradenames (weighted-average useful life of 10 years)	20
										In-process research and development	49
										Total intangible assets	335
										Goodwill	893
										Deferred tax liabilities, net	(77		)
										Income tax payable	(50		)
										Other assumed liabilities, net of acquired assets	(1		)
										Total purchase price	$	1,100

Intangibles_and_Goodwill_Table

Intangibles and Goodwill (Tables)	12 Months Ended
	Dec. 31, 2013
Goodwill and Intangible Assets Disclosure [Abstract]	'
Intangible Assets, Excluding Goodwill	'
	Intangible assets, excluding goodwill, as of December 31, 2013 and 2012 consist of (tables in millions):
		December 31, 2013
		Gross Carrying			Accumulated			Net Book Value
		Amount			Amortization
	Purchased technology	$	2,356		$	(1,429	)	$	927
	Patents	225			(102		)	123
	Software licenses	101			(90		)	11
	Trademarks and tradenames	171			(118		)	53
	Customer relationships and customer lists	1,386			(855		)	531
	Leasehold interest	145			(11		)	134
	Other	28			(27		)	1
	Total intangible assets, excluding goodwill	$	4,412		$	(2,632	)	$	1,780
		December 31, 2012
		Gross Carrying			Accumulated			Net Book Value
		Amount			Amortization
	Purchased technology	$	2,233		$	(1,207	)	$	1,026
	Patents	225			(87		)	138
	Software licenses	96			(88		)	8
	Trademarks and tradenames	173			(102		)	71
	Customer relationships and customer lists	1,378			(724		)	654
	Leasehold interest	145			(7		)	138
	Other	26			(26		)	—
	Total intangible assets, excluding goodwill	$	4,276		$	(2,241	)	$	2,035
Amortization Expense on Intangible Assets for the Next Five Years	'
	As of December 31, 2013, amortization expense on intangible assets for the next five years is expected to be as follows (table in millions):
	2014	$	360
	2015	316
	2016	260
	2017	210
	2018	179
	Total	$	1,325
Changes in Carrying Amount of Goodwill	'
	Changes in the carrying amount of goodwill, net, on a consolidated basis and by segment, for the years ended December 31, 2013 and 2012 consist of the following (tables in millions):
		Year Ended December 31, 2013
		Information			Information			RSA			Pivotal		VMware			Total
		Storage			Intelligence			Information					Virtual
					Group			Security					Infrastructure
	Balance, beginning of the year	$	7,442		$	1,484		$	2,022		$	—	$	2,892		$	13,840
	Goodwill resulting from acquisitions	145			1			181			37		233			597
	Finalization of purchase price allocations and other, net	11			2			—			—		(26		)	(13		)
	Goodwill transferred in formation of Pivotal	(112		)	—			—			140		(28		)	—
	Balance, end of the year	$	7,486		$	1,487		$	2,203		$	177	$	3,071		$	14,424
		Year Ended December 31, 2012
		Information			Information			RSA			Pivotal		VMware			Total
		Storage			Intelligence			Information					Virtual
					Group			Security					Infrastructure
	Balance, beginning of the year	$	7,034		$	1,469		$	1,849		$	—	$	1,803		$	12,155
	Goodwill resulting from acquisitions	438			15			179			—		1,092			1,724
	Finalization of purchase price allocations and other, net	(1		)	—			(6		)	—		(3		)	(10		)
	Goodwill de-recognized in divestiture of business	(29		)	—			—			—		—			(29		)
	Balance, end of the year	$	7,442		$	1,484		$	2,022		$	—	$	2,892		$	13,840

Debt_Tables

Debt (Tables)	12 Months Ended
	Dec. 31, 2013
Debt Disclosure [Abstract]	'
Key Components of Convertible Debt	'
	Our long-term debt as of December 31, 2013 was as follows (dollars in millions):
	Senior Notes		Issued at Discount		Carrying
			to Par		Value
	$2.5 billion 1.875% Notes due 2018		99.943	%	$	2,499
	$2.0 billion 2.650% Notes due 2020		99.76	%	1,996
	$1.0 billion 3.375% Notes due 2023		99.925	%	999
					$	5,494
	The following table represents the key components of our interest expense on convertible debt (table in millions):
		For the Twelve Months Ended
		2013			2012		2011
	Contractual interest expense on the coupon	$	27		$	30	$	58
	Amortization of the discount component recognized as interest expense	58			61		116
	Total interest expense on the convertible debt	$	85		$	91	$	174

Fair_Value_of_Financial_Assets1

Fair Value of Financial Assets and Liabilities (Tables)	12 Months Ended
	Dec. 31, 2013
Fair Value Disclosures [Abstract]	'
Composition of Investments	'
	The following tables summarize the composition of our short- and long-term investments at December 31, 2013 and 2012 (tables in millions):
		December 31, 2013
		Amortized			Unrealized			Unrealized			Aggregate
		Cost			Gains			(Losses)			Fair Value
	U.S. government and agency obligations	$	3,726		$	4		$	(3	)	$	3,727
	U.S. corporate debt securities	2,260			8			(2		)	2,266
	High yield corporate debt securities	515			19			(3		)	531
	Asset-backed securities	—			—			—			—
	Municipal obligations	860			3			—			863
	Auction rate securities	63			—			(3		)	60
	Foreign debt securities	2,152			6			(3		)	2,155
	Total fixed income securities	9,576			40			(14		)	9,602
	Publicly traded equity securities	72			24			(1		)	95
	Total	$	9,648		$	64		$	(15	)	$	9,697
	We held approximately $2,155 million in foreign debt securities at December 31, 2013. These securities have an average credit rating of A+, and approximately 4% of these securities are deemed sovereign debt with an average credit rating of AAA. None of the securities deemed sovereign debt are from Greece, Italy, Ireland, Portugal, Spain or Cyprus.
		December 31, 2012
		Amortized			Unrealized			Unrealized			Aggregate
		Cost			Gains			(Losses)			Fair Value
	U.S. government and agency obligations	$	2,191		$	10		$	(1	)	$	2,200
	U.S. corporate debt securities	1,480			10			—			1,490
	High yield corporate debt securities	486			34			(1		)	519
	Asset-backed securities	2			—			—			2
	Municipal obligations	1,032			3			—			1,035
	Auction rate securities	74			—			(4		)	70
	Foreign debt securities	1,270			9			—			1,279
	Total fixed income securities	6,535			66			(6		)	6,595
	Publicly traded equity securities	47			41			(1		)	87
	Total	$	6,582		$	107		$	(7	)	$	6,682
Fair Value Hierarchy For Financial Assets and Liabilities Measured at Fair Value	'
	The following tables represent our fair value hierarchy for our financial assets and liabilities measured at fair value as of December 31, 2013 and 2012 (in millions):
		December 31, 2013
		Level 1			Level 2			Level 3			Total
	Cash	$	1,725		$	—		$	—		$	1,725
	Cash equivalents	5,674			492			—			6,166
	U.S. government and agency obligations	1,797			1,930			—			3,727
	U.S. corporate debt securities	—			2,266			—			2,266
	High yield corporate debt securities	—			531			—			531
	Municipal obligations	—			863			—			863
	Auction rate securities	—			—			60			60
	Foreign debt securities	—			2,155			—			2,155
	Publicly traded equity securities	95			—			—			95
	Total cash and investments	$	9,291		$	8,237		$	60		$	17,588
	Other items:
	Strategic investments held at cost	$	—		$	—		$	379		$	379
	Investment in joint venture	—			—			35			35
	Long-term debt carried at discounted issuance cost	—			(5,419		)	—			(5,419		)
	Foreign exchange derivative assets	—			31			—			31
	Foreign exchange derivative liabilities	—			(20		)	—			(20		)
	Commodity derivative assets	—			4			—			4
		December 31, 2012
		Level 1			Level 2			Level 3			Total
	Cash	$	1,454		$	—		$	—		$	1,454
	Cash equivalents	2,898			362			—			3,260
	U.S. government and agency obligations	1,327			873			—			2,200
	U.S. corporate debt securities	—			1,490			—			1,490
	High yield corporate debt securities	—			519			—			519
	Asset-backed securities	—			2			—			2
	Municipal obligations	—			1,035			—			1,035
	Auction rate securities	—			—			70			70
	Foreign debt securities	—			1,279			—			1,279
	Publicly traded equity securities	87			—			—			87
	Total cash and investments	$	5,766		$	5,560		$	70		$	11,396
	Other items:
	Strategic investments held at cost	$	—		$	—		$	364		$	364
	Investment in joint venture	—			—			33			33
	Convertible debt carried at discounted issuance cost	—			(2,666		)	—			(2,666		)
	Foreign exchange derivative assets	—			30			—			30
	Foreign exchange derivative liabilities	—			(35		)	—			(35		)
	Commodity derivative liabilities	—			(1		)	—			(1		)
Changes in Fair Value of Level 3 Financial Assets	'
	The following table provides a summary of changes in fair value of our Level 3 auction rate securities for the years ended December 31, 2013 and 2012 (table in millions):
		2013			2012
	Balance, beginning of the period	$	70		$	75
	Sales	(8		)	—
	Calls at par value	(1		)	(7		)
	Other-than-temporary impairment loss	(1		)	(3		)
	Decrease in previously recognized unrealized losses included in other comprehensive income	—			5
	Balance, end of the period	$	60		$	70
	The following table provides a summary of changes in fair value of our LenovoEMC joint venture for the years ended December 31, 2013 and 2012 (table in millions):
		2013			2012
	Balance, beginning of the period	$	33		$	—
	Realized gain included in other income (expense), net	2			33
	Balance, end of period	$	35		$	33
Unrealized Losses on Investments by Investment Category and Length of Time in Continuous Unrealized Loss Position	'
	Unrealized losses on investments at December 31, 2013 and 2012 by investment category and length of time the investment has been in a continuous unrealized loss position are as follows (table in millions):
	December 31, 2013	Less Than 12 Months						12 Months or Greater						Total
		Fair			Gross			Fair			Gross			Fair		Gross
		Value			Unrealized			Value			Unrealized			Value		Unrealized
					Losses						Losses					Losses
	U.S. government and agency obligations	$	1,161		$	(3	)	$	20		$	—		$	1,181	$	(3	)
	U.S. corporate debt securities	532			(2		)	17			—			549		(2		)
	High yield corporate debt securities	120			(3		)	—			—			120		(3		)
	Municipal obligations	51			—			—			—			51		—
	Auction rate securities	—			—			60			(3		)	60		(3		)
	Foreign debt securities	695			(3		)	6			—			701		(3		)
	Publicly traded equity securities	—			—			25			(1		)	25		(1		)
	Total	$	2,559		$	(11	)	$	128		$	(4	)	$	2,687	$	(15	)
	December 31, 2012	Less Than 12 Months						12 Months or Greater						Total
		Fair			Gross			Fair			Gross			Fair		Gross
		Value			Unrealized			Value			Unrealized			Value		Unrealized
					Losses						Losses					Losses
	U.S. government and agency obligations	$	188		$	(1	)	$	12		$	—		$	200	$	(1	)
	U.S. corporate debt securities	266			—			—			—			266		—
	High yield corporate debt securities	21			—			1			(1		)	22		(1		)
	Municipal obligations	258			—			12			—			270		—
	Auction rate securities	—			—			70			(4		)	70		(4		)
	Foreign debt securities	178			—			2			—			180		—
	Publicly traded equity securities	1			(1		)	—			—			1		(1		)
	Total	$	912		$	(2	)	$	97		$	(5	)	$	1,009	$	(7	)
Contractual Maturities of Investments	'
	The contractual maturities of fixed income securities held at December 31, 2013 are as follows (table in millions):
		December 31, 2013
		Amortized			Aggregate
		Cost Basis			Fair Value
	Due within one year	$	2,695		$	2,697
	Due after 1 year through 5 years	5,855			5,871
	Due after 5 years through 10 years	519			531
	Due after 10 years	507			503
	Total	$	9,576		$	9,602

Inventories_Tables

Inventories (Tables)	12 Months Ended
	Dec. 31, 2013
Inventory Disclosure [Abstract]	'
Components of Inventories	'
	Inventories consist of (table in millions):
		December 31,		December 31,
		2013		2012
	Work-in-process	$	696	$	606
	Finished goods	638		595
		$	1,334	$	1,201

Accounts_and_Notes_Receivable_1

Accounts and Notes Receivable and Allowance for Credit Losses (Tables)	12 Months Ended
	Dec. 31, 2013
Receivables [Abstract]	'
Contractual Amounts Due Under Leases	'
	The contractual amounts due under the leases we retained as of December 31, 2013 were as follows (table in millions):
	Year	Contractual Amounts
		Due Under Leases
	Due within one year	$	103
	Due within two years	80
	Due within three years	68
	Thereafter	1
	Total	252
	Less amounts representing interest	(5		)
	Present value	247
	Current portion (included in accounts and notes receivable)	101
	Long-term portion (included in other assets, net)	$	146
Allowance for Credit Losses	'
	The following table presents the activity of our allowance for credit losses related to lease receivables for the years ended December 31, 2013 and 2012 (table in millions):
		December 31,			December 31,
		2013			2012
	Balance, beginning of the period	$	17		$	24
	Recoveries	(12		)	(15		)
	Provisions	4			8
	Balance, end of the period	$	9		$	17

Property_Plant_and_Equipment_T

Property, Plant and Equipment (Tables)	12 Months Ended
	Dec. 31, 2013
Property, Plant and Equipment [Abstract]	'
Components of Property, Plant and Equipment	'
	Depreciation commences upon placing the asset in service and is recognized on a straight-line basis over the estimated useful lives of the assets, as follows:
	Furniture and fixtures			5-10 years
	Equipment and software			2-10 years
	Improvements			5-31 years
	Buildings			15-51 years
	Property, plant and equipment consist of (table in millions):
		December 31,			December 31,
		2013			2012
	Furniture and fixtures	$	229		$	197
	Equipment and software	5,973			5,345
	Buildings and improvements	2,089			1,873
	Land	132			121
	Building construction in progress	215			197
		8,638			7,733
	Accumulated depreciation	(5,160		)	(4,588		)
		$	3,478		$	3,145

Accrued_Expenses_Tables

Accrued Expenses (Tables)	12 Months Ended
	Dec. 31, 2013
Payables and Accruals [Abstract]	'
Components of Accrued Expenses	'
	Accrued expenses consist of (table in millions):
		December 31,			December 31,
		2013			2012
	Salaries and benefits	$	1,078		$	1,018
	Product warranties	289			278
	Dividends payable (see Note O)	205			—
	Partner rebates	214			187
	Restructuring, current (See Note Q)	84			76
	Derivatives	23			40
	Other	890			893
		$	2,783		$	2,492
Activity in Warranty Accrual for Product Warranty	'
	The following represents the activity in our warranty accrual for the years ended December 31, 2013, 2012 and 2011 (table in millions):
		Year Ended December 31,
		2013			2012			2011
	Balance, beginning of the period	$	278		$	255		$	236
	Provision	198			182			175
	Amounts charged to the accrual	(187		)	(159		)	(156		)
	Balance, end of the period	$	289		$	278		$	255

Income_Taxes_Tables

Income Taxes (Tables)	12 Months Ended
	Dec. 31, 2013
Income Tax Disclosure [Abstract]	'
Provision for Income Taxes	'
	Our provision (benefit) for income taxes consists of (table in millions):
		2013				2012				2011
	Federal:
	Current	$	698			$	792			$	488
	Deferred	(163		)		(80		)		14
		535				712				502
	State:
	Current	84				74				70
	Deferred	(23		)		(12		)		(45		)
		61				62				25
	Foreign:
	Current	192				169				101
	Deferred	(16		)		(25		)		12
		176				144				113
	Total provision for income taxes	$	772			$	918			$	640
Reconciliation of Income Tax Provision to Statutory Federal Tax Rate	'
	A reconciliation of our income tax provision to the statutory federal tax rate is as follows:
		2013			2012			2011
	Statutory federal tax rate	35	%		35	%		35	%
	State taxes, net of federal taxes	1.6	%		1.3	%		0.7	%
	Resolution of uncertain tax positions	(0.9	)%		(0.5	)%		(1.7	)%
	Tax rate differential for international jurisdictions and other international related tax items	(15.2	)%		(13.6	)%		(14.4	)%
	U.S. tax credits	(3.8	)%		(0.2	)%		(2.8	)%
	International reorganization of acquired companies	0.6	%		0.3	%		—	%
	Permanent items	2.3	%		1.5	%		2.5	%
	Other	0.4	%		0.3	%		0.4	%
		20	%		24.1	%		19.7	%
Components of Current and Noncurrent Deferred Tax Assets and Liabilities	'
	The components of the current and non-current deferred tax assets and liabilities are as follows (table in millions):
		31-Dec-13								December 31, 2012
		Deferred				Deferred				Deferred			Deferred
		Tax				Tax				Tax			Tax
		Asset				Liability				Asset			Liability
	Current:
	Accounts and notes receivable	$	96			$	—			$	68		$	—
	Inventory	73				—				64			—
	Accrued expenses	311				—				281			—
	Deferred revenue	365				—				281			—
	Equity	83				—				98			—
	Credit carryforwards	4				—				5			—
	Net operating losses	28				—				29			—
	Total current	960				—				826			—
	Property, plant and equipment, net	—				(291		)		—			(286		)
	Intangible and other assets, net	—				(680		)		—			(663		)
	Equity	139				—				144			—
	Deferred revenue	253				—				177			—
	Other non-current liabilities	—				(13		)		—			(43		)
	Credit carryforward	280				—				242			—
	Net operating losses	78				—				98			—
	Other comprehensive loss	109				—				120			—
	Total non-current	859				(984		)		781			(992		)
	Gross deferred tax assets and liabilities	1,819				(984		)		1,607			(992		)
	Valuation allowance	(211		)		—				(183		)	—
	Total deferred tax assets and liabilities	$	1,608			$	(984	)		$	1,424		$	(992	)
Rollforward of Gross Consolidated Liability for Unrecognized Income Tax Benefits	'
	The following is a rollforward of our gross consolidated liability for unrecognized income tax benefits for the three years ended December 31 (table in millions):
		2013				2012				2011
	Unrecognized tax benefits, beginning of year	$	270			$	197			$	230
	Tax positions related to current year:
	Additions	37				25				42
	Reductions	—				(1		)		(2		)
	Tax positions related to prior years:
	Additions	10				64				14
	Reductions	(33		)		(4		)		(71		)
	Settlements	(5		)		—				(3		)
	Lapses in statutes of limitations	(13		)		(11		)		(13		)
	Unrecognized tax benefits, end of year	$	266			$	270			$	197

Retirement_Plan_Benefits_Table

Retirement Plan Benefits (Tables)	12 Months Ended
	Dec. 31, 2013
Compensation and Retirement Disclosure [Abstract]	'
Components of Change in Benefit Obligation of Pension Plans	'
	The components of the change in benefit obligation of the Pension Plan is as follows (table in millions):
			December 31,				December 31,
			2013				2012
	Benefit obligation, at beginning of year		$	539			$	483
	Interest cost		20				21
	Benefits paid		(18		)		(17		)
	Actuarial (gain) loss		(46		)		52
	Benefit obligation, at end of year		$	495			$	539
Reconciliation of Beginning and Ending Balances of Fair Value of Assets of Pension Plans	'
	The reconciliation of the beginning and ending balances of the fair value of the assets of the Pension Plan is as follows (table in millions):
			December 31,				December 31,
			2013				2012
	Fair value of plan assets, at beginning of year		$	431			$	397
	Actual return on plan assets		35				51
	Employer contributions to plan		1				—
	Benefits paid		(18		)		(17		)
	Fair value of plan assets, at end of year		$	449			$	431
Components of Net Periodic Expense of Pension Plans	'
	The components of net periodic expense of the Pension Plan are as follows (table in millions):
			2013				2012				2011
	Interest cost		$	20			$	21			$	23
	Expected return on plan assets		(28		)		(26		)		(25		)
	Recognized actuarial loss		15				13				11
	Net periodic expense		$	7			$	8			$	9
Weighted Average Assumptions Used in Pension Plans to Determine Benefit Obligations	'
	The weighted-average assumptions used in the Pension Plan to determine benefit obligations at December 31 are as follows:
			December 31,			December 31,			December 31,
			2013			2012			2011
	Discount rate		4.7	%		3.7	%		4.6	%
	Rate of compensation increase		N/A			N/A			N/A
	The weighted-average assumptions used in the Pension Plan to determine periodic benefit cost for the years ended December 31 are as follows:
			December 31,			December 31,			December 31,
			2013			2012			2011
	Discount rate		3.7	%		4.6	%		5.4	%
	Expected long-term rate of return on plan assets		6.75	%		6.75	%		6.75	%
	Rate of compensation increase		N/A			N/A			N/A
Weighted Average Assumptions Used in Pension Plans to Determine Periodic Benefit Cost	'
	The benefit payments are expected to be paid in the following years (table in millions):
	2014	$	23
	2015	25
	2016	26
	2017	28
	2018	29
	2019-2022	163
Pension Plan Assets at Fair Value	'
	The following table sets forth, by level within the fair value hierarchy, the Pension Plan’s assets at fair value as of December 31, 2013 and 2012 (table in millions):
			December 31, 2013
			Level 1				Level 2				Level 3			Total
	Common collective trusts		$	—			$	330			$	—		$	330
	U.S. Treasury securities		2				—				—			2
	Corporate debt securities		—				114				—			114
	Total		$	2			$	444			$	—		446
	Plan payables, net of accrued interest and dividends													3
	Total													$	449
			December 31, 2012
			Level 1				Level 2				Level 3			Total
	Common collective trusts		$	—			$	308			$	—		$	308
	U.S. Treasury securities		2				—				—			2
	Corporate debt securities		—				120				—			120
	Total		$	2			$	428			$	—		430
	Plan payables, net of accrued interest and dividends													1
	Total													$	431
Pension Plan Investments at Fair Value Represented 5% or More of Pension Plan Net Assets	'
	Pension Plan investments at fair value as of December 31, 2013 and 2012 which represented 5% or more of the Pension Plan’s net assets were as follows (table in millions):
			2013				2012
	EB Daily Valued Small Cap Stock Index Fund		$	30			$	26
	EB Daily Valued Stock Index Fund		104				86
	EB Daily Valued International Stock Index Fund		30				26
	EB Long Term Government Bond Index		40				46
	EB Long Term Credit Bond Index		63				68
	Corporate Debt Securities		118				124
			$	385			$	376
Weighted Average Target Asset Allocations	'
	The long-term weighted average target asset allocations are as follows:
		December 31, 2013
	U.S. large capitalization equities	17	%
	U.S. small capitalization equities	4
	International equities	4
	U.S. long-duration fixed income	75
	High yield fixed income	—
	Total	100	%
Actual Allocation of the Assets in the Pension Plans	'
	The actual allocation of the assets in the Pension Plan at December 31, 2013 and 2012 were as follows:
			December 31,			December 31,
			2013			2012
	U.S. large capitalization equities		33	%		28	%
	U.S. small capitalization equities		7			6
	International equities		8			8
	U.S. long-duration fixed income		49			55
	High yield fixed income		3			3
	Total		100	%		100	%

Commitments_and_Contingencies_

Commitments and Contingencies (Tables)	12 Months Ended
	Dec. 31, 2013
Commitments and Contingencies Disclosure [Abstract]	'
Rent Expense on Operating Leases	'
	Rent expense was as follows (table in millions):
			2013			2012			2011
	Rent expense		$	328		$	312		$	309
	Sublease proceeds		(2		)	(4		)	(5		)
	Net rent expense		$	326		$	308		$	304
Future Operating Lease Commitments	'
	Our future operating lease commitments as of December 31, 2013 are as follows (table in millions):
	2014	$	294
	2015	235
	2016	176
	2017	134
	2018	94
	Thereafter	679
	Total minimum lease payments	$	1,612

Stockholders_Equity_Tables

Stockholders' Equity (Tables)	12 Months Ended
	Dec. 31, 2013
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]	'
Reclassification out of Accumulated Other Comprehensive Income [Table Text Block]	'
	The amounts reclassified out of accumulated other comprehensive income (loss) for the year ended December 31, 2013 is as follows (table in millions):
	Accumulated Other Comprehensive Income Components		Amount Reclassified from Accumulated Other Comprehensive Income				Impacted Line Item on
							Consolidated Income Statements
	For the Year Ended, December 31, 2013
	Net gain on investments:		$	17			Investment income
			(6		)		Provision for income tax
	Net of tax		$	11
	Net gain on derivatives:
	Foreign exchange contracts		$	12			Product sales revenue
	Foreign exchange contracts		—				Cost of product sales
	Total net gain on derivatives before tax		12
			(2		)		Provision for income tax
	Net of tax		$	10
Reconciliation from Basic to Diluted Earnings Per Share	'
	The reconciliation from basic to diluted earnings per share for both the numerators and denominators is as follows (table in millions):
		2013				2012			2011
	Numerator:
	Net income attributable to EMC Corporation	$	2,889			$	2,733		$	2,461
	Incremental dilution from VMware	(8		)		(10		)	(14		)
	Net income – dilution attributable to EMC Corporation	$	2,881			$	2,723		$	2,447
	Denominator:
	Weighted average shares, basic	2,074				2,093			2,056
	Weighted average common stock equivalents	28				40			52
	Assumed conversion of the 2013 Notes and associated warrants	58				73			121
	Weighted average shares, diluted	2,160				2,206			2,229
Accumulated Other Comprehensive Loss	'
	Accumulated Other Comprehensive Income (Loss)
	Changes in accumulated other comprehensive income (loss), which is presented net of tax, consist of the following (table in millions):
		Foreign Currency Translation Adjustments				Unrealized Net Gains on Investments			Unrealized Net Losses on Derivatives			Recognition of Actuarial Net Loss from Pension and Other Postretirement Plans			Accumulated Other Comprehensive Income Attributable to the Non-controlling Interest in VMware, Inc.			Total
	Balance as of January, 1 2013(a)	$	(9	)		$	64		$	(109	)	$	(153	)	$	(1	)	$	(208	)
	Other comprehensive income (loss) before reclassifications	(44		)		(22		)	13			43			—			(10		)
	Net losses (gains) reclassified from accumulated other comprehensive income	—				(11		)	(10		)	—			—			(21		)
	Net current period other comprehensive income (loss)	(44		)		(33		)	3			43			—			(31		)
	Balance as of December 31, 2013(b)	$	(53	)		$	31		$	(106	)	$	(110	)	$	(1	)	$	(239	)
	__________________
	(a)	Net of taxes (benefits) of $37 million for unrealized net gains on investments, $(67) million for unrealized net losses on derivatives and $(87) million for actuarial net loss on pension plans.
	(b)	Net of taxes (benefits) of $18 million for unrealized net gains on investments, $(66) million for unrealized net losses on derivatives and $(61) million for actuarial net loss on pension plans.

StockBased_Compensation_Tables

Stock-Based Compensation (Tables)	12 Months Ended
	Dec. 31, 2013
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]	'
Components of Stock-Based Compensation Expense	'
	The following tables summarize the components of total stock-based compensation expense included in our consolidated income statements in 2013, 2012 and 2011 (in millions):
		Year Ended December 31, 2013
		Stock Options				Restricted				Total Stock-Based
						Stock				Compensation
	Cost of product sales	$	19			$	29			$	48
	Cost of services	15				61				76
	Research and development	75				282				357
	Selling, general and administrative	82				372				454
	Stock-based compensation expense before income taxes	191				744				935
	Income tax benefit	56				170				226
	Total stock-based compensation, net of tax	$	135			$	574			$	709
		Year Ended December 31, 2012
		Stock Options				Restricted				Total Stock-Based
						Stock				Compensation
	Cost of product sales	$	22			$	30			$	52
	Cost of services	21				53				74
	Research and development	88				236				324
	Selling, general and administrative	131				339				470
	Stock-based compensation expense before income taxes	262				658				920
	Income tax benefit	68				162				230
	Total stock-based compensation, net of tax	$	194			$	496			$	690
		Year Ended December 31, 2011
		Stock Options				Restricted				Total Stock-Based
						Stock				Compensation
	Cost of product sales	$	30			$	31			$	61
	Cost of services	25				38				63
	Research and development	106				193				299
	Selling, general and administrative	165				248				413
	Stock-based compensation expense before income taxes	326				510				836
	Income tax benefit	73				120				193
	Total stock-based compensation, net of tax	$	253			$	390			$	643
Net Change in Amounts Capitalized or Accrued	'
	The table below presents the net change in amounts capitalized or accrued in 2013 and 2012 for the following items (in millions):
		Increased (decreased)				Increased (decreased)
		during the year ended				during the year ended
		December 31, 2013				December 31, 2012
	Accrued expenses (accrued warranty expenses)	$	(1	)		$	(2	)
	Other assets	2				8
EMC Employee Stock Purchase - 1989 Plan	'
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]	'
Employee Stock Purchase Plan Activity	'
	The following table summarizes the 1989 Plan activity in the years ended December 31, 2013, 2012 and 2011 (table in millions, except per share amounts):
		For the Year Ended
		December 31, 2013				December 31, 2012				December 31, 2011
	Cash proceeds	$	82			$	154			$	141
	Common shares purchased	4				7				7
	Weighted-average price per share	$	20.08			$	21.65			$	20.44
EMC	'
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]	'
Stock Option Activity	'
	The following table summarizes our option activity under all equity plans since January 1, 2011 (shares in millions):
		Number of			Weighted Average
		Shares			Exercise Price
					(per share)
	Outstanding, January 1, 2011	172			$	15.23
	Options granted relating to business acquisitions	1			3.24
	Granted	2			25.31
	Forfeited	(4	)		13
	Expired	(14	)		40.05
	Exercised	(45	)		11.91
	Outstanding, December 31, 2011	112			13.69
	Options granted relating to business acquisitions	2			1.54
	Granted	1			26.8
	Forfeited	(2	)		13.75
	Expired	(1	)		14.19
	Exercised	(35	)		11.65
	Outstanding, December 31, 2012	77			14.39
	Options granted relating to business acquisitions	1			3.29
	Granted	—			—
	Forfeited	(1	)		13.36
	Expired	—			—
	Exercised	(20	)		13.1
	Outstanding, December 31, 2013	57			14.56
	Exercisable, December 31, 2013	50			14.58
	Vested and expected to vest, December 31, 2013	57			$	14.59
Restricted Stock and Restricted Stock Unit Activity	'
	The following table summarizes our restricted stock and restricted stock unit activity since January 1, 2011 (shares in millions):
		Number of			Weighted Average
		Shares			Grant Date
					Fair Value
	Restricted stock and restricted stock units at January 1, 2011	44			$	17.2
	Granted	21			25.12
	Vested	(15	)		16.44
	Forfeited	(4	)		20.56
	Outstanding, December 31, 2011	46			21.1
	Granted	21			26.57
	Vested	(16	)		18.92
	Forfeited	(4	)		23.09
	Outstanding, December 31, 2012	47			24.39
	Granted	20			25.55
	Vested	(15	)		22.61
	Forfeited	(4	)		24.8
	Restricted stock and restricted stock units at December 31, 2013	48			$	25.43
Weighted Average Assumptions Used to Estimate Fair Value of Awards	'
	The fair value of each option granted during the years ended December 31, 2013, 2012 and 2011 was estimated on the date of grant using the Black-Scholes option-pricing model with the following weighted-average assumptions:
		For the Year Ended
		December 31,
	EMC Stock Options	2013		2012				2011
	Dividend yield	N/A		None				None
	Expected volatility	N/A		34.3		%		33.3		%
	Risk-free interest rate	N/A		0.8		%		1.6		%
	Expected term (in years)	N/A		5.2				4.9
	Weighted-average fair value at grant date	N/A		$	8.56			$	8
VMware	'
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]	'
Stock Option Activity	'
	The following table summarizes activity since January 1, 2011 for VMware employees in VMware stock options (shares in millions):
		Number of			Weighted Average
		Shares			Exercise Price
					(per share)
	Outstanding, January 1, 2011	27			$	33.54
	Forfeited	(1	)		40.98
	Exercised	(10	)		28.64
	Outstanding, December 31, 2011	16			35.27
	Granted	1			4.67
	Forfeited	(1	)		42.07
	Exercised	(6	)		30.44
	Outstanding, December 31, 2012	10			34.36
	Granted	1			71.53
	Exercised	(5	)		28.12
	Outstanding, December 31, 2013	6			44.12
	Exercisable, December 31, 2013	4			36.45
	Vested and expected to vest	6			$	42.84
Restricted Stock and Restricted Stock Unit Activity	'
	The following table summarizes restricted stock activity since January 1, 2011 (units in millions):
		Number of			Weighted Average
		Units			Grant Date
					Fair Value
					(per unit)
	Restricted stock at January 1, 2011	10			$	54.17
	Granted	5			91.51
	Vested	(4	)		48.47
	Forfeited	(1	)		64.7
	Outstanding, December 31, 2011	10			72.74
	Granted	8			101.73
	Vested	(4	)		69.01
	Forfeited	(2	)		81.53
	Outstanding, December 31, 2012	12			91.93
	Granted	7			76.2
	Vested	(4	)		83.21
	Forfeited	(2	)		90.55
	Outstanding, December 31, 2013	13			$	85.85
Stock Repurchase Agreements	'
	The following table summarizes stock repurchase authorizations in the years ended December 31, 2013, 2012 and 2011 (amounts in table in millions):
	Month Authorized	Amount Authorized		Expiration Date
	Aug-13	700		End of 2015
	Nov-12	250		End of 2014
	Feb-12	600		End of 2013
	Feb-11	550		End of 2012
	Mar-10	400		End of 2011
Stock Repurchase Activity	'
	The following table summarizes stock repurchase activity in the years ended December 31, 2013, 2012 and 2011 (table in millions, except per share amounts):
		For the Year Ended December 31,
		2013				2012				2011
	Aggregate purchase price	$	508			$	468			$	526
	Class A common shares repurchased	7				5				6
	Weighted-average price per share	$	76.58			$	91.1			$	88.37
Weighted Average Assumptions Used to Estimate Fair Value of Awards	'
	The fair value of each option to acquire VMware Class A common stock granted during the years ended December 31, 2013, 2012 and 2011 was estimated on the date of grant using the Black-Scholes option-pricing model with the following weighted-average assumptions:
		For the Year Ended
		December 31,
	VMware Stock Options	2013				2012				2011
	Dividend yield	None				None				None
	Expected volatility	38.5		%		35.8		%		37.7		%
	Risk-free interest rate	0.9		%		0.3		%		1		%
	Expected term (in years)	3.6				2.7				3
	Weighted-average fair value at grant date	$	29.47			$	80.45			$	88.4
		For the Year Ended
		December 31,
	VMware Employee Stock Purchase Plan	2013				2012				2011
	Dividend yield	None				None				None
	Expected volatility	32.9		%		37.8		%		34.9		%
	Risk-free interest rate	0.1		%		0.1		%		0.2		%
	Expected term (in years)	0.5				0.5				0.5
	Weighted-average fair value at grant date	$	20.45			$	23.36			$	23.69
VMware | VMware Employee Stock Purchase - 2007 Plan	'
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]	'
Employee Stock Purchase Plan Activity	'
	The following table summarizes ESPP activity in the years ended December 31, 2013, 2012 and 2011 (table in millions, except per share amounts):
		For the Year Ended
		December 31, 2013				December 31, 2012				December 31, 2011
	Cash proceeds	$	76			$	69			$	57
	Class A common shares purchased	1				1				1
	Weighted-average price per share	$	65.97			$	77.34			$	69.81

Restructuring_and_AcquisitionR1

Restructuring and Acquisition-Related Charges (Tables)	12 Months Ended
	Dec. 31, 2013
Restructuring and Related Activities [Abstract]	'
Activity for the Restructuring Programs	'
	The activity for the restructuring programs is presented below (tables in millions):
	Twelve Months Ended, December 31, 2013:
	2013 EMC Program
	Category	Balance as of December 31, 2012		2013 Charges			Utilization			Balance as of December 31, 2013
	Workforce reductions	$	—	$	130		$	(82	)	$	48
	Consolidation of excess facilities and other contractual obligations	—		7			(6		)	1
	Total	$	—	$	137		$	(88	)	$	49
	2013 VMware Program
	Category	Balance as of December 31, 2012		2013 Charges			Utilization			Balance as of December 31, 2013
	Workforce reductions	$	—	$	54		$	(54	)	$	—
	Consolidation of excess facilities and other contractual obligations	—		—			—			—
	Total	$	—	$	54		$	(54	)	$	—
	Other EMC Programs
	Category	Balance as of December 31, 2012		Adjustments to the Provision			Utilization			Balance as of December 31, 2013
	Workforce reductions	$	63	$	(9	)	$	(36	)	$	18
	Consolidation of excess facilities and other contractual obligations	28		11			(16		)	23
	Total	$	91	$	2		$	(52	)	$	41
	Twelve Months Ended, December 31, 2012:
	Category	Balance as of December 31, 2011		2012			Utilization			Balance as of December 31, 2012
				Charges
	Workforce reductions	$	50	$	80		$	(67	)	$	63
	Consolidation of excess facilities and other contractual obligations	30		21			(23		)	28
	Total	$	80	$	101		$	(90	)	$	91
	Twelve Months Ended, December 31, 2011:
	Category	Balance as of		2011			Utilization			Balance as of December 31, 2011
		31-Dec-10		Charges
	Workforce reductions	$	54	$	60		$	(64	)	$	50
	Consolidation of excess facilities and other contractual obligations	28		26			(24		)	30
	Total	$	82	$	86		$	(88	)	$	80

Segment_Information_Tables

Segment Information (Tables)	12 Months Ended
	Dec. 31, 2013
Segment Reporting [Abstract]	'
Segment Information	'
	Our segment information for the years ended 2013, 2012 and 2011 are as follows (tables in millions, except percentages):
		EMC Information Infrastructure
		Information			Information			RSA			EMC			Pivotal			EMC Information Infrastructure plus Pivotal
		Storage			Intelligence			Information			Information
					Group			Security			Infrastructure
	2013
	Revenues:
	Product revenues	$	10,694		$	180		$	453		$	11,327		$	110		$	11,437
	Services revenues	5,438			467			534			6,439			199			6,638
	Total consolidated revenues	16,132			647			987			17,766			309			18,075
	Gross profit	$	9,082		$	419		$	655		$	10,156		$	118		$	10,274
	Gross profit percentage	56.3		%	64.8		%	66.4		%	57.2		%	38		%	56.8		%
	Research and development										1,453			117			1,570
	Selling, general and administrative										4,567			165			4,732
	Restructuring and acquisition-related charges										—			—			—
	Total costs and expenses										6,020			282			6,302
	Operating income (loss)										$	4,136		$	(164	)	$	3,972
		EMC			VMware			Corp			Consolidated
		Information			Virtual			Reconciling
		Infrastructure plus Pivotal			Infrastructure			Items
					within EMC
	2013
	Revenues:
	Product revenues	$	11,437		$	2,253		$	—		$	13,690
	Services revenues	6,638			2,894			—			9,532
	Total consolidated revenues	18,075			5,147			—			23,222
	Gross profit	$	10,274		$	4,589		$	(390	)	$	14,473
	Gross profit percentage	56.8		%	89.2		%	—			62.3		%
	Research and development	1,570			826			365			2,761
	Selling, general and administrative	4,732			2,003			603			7,338
	Restructuring and acquisition-related charges	—			—			224			224
	Total costs and expenses	6,302			2,829			1,192			10,323
	Operating income	3,972			1,760			(1,582		)	4,150
	Non-operating income (expense)	(336		)	22			29			(285		)
	Income tax provision	911			317			(456		)	772
	Net income	2,725			1,465			(1,097		)	3,093
	Net income attributable to the non-controlling interest in VMware, Inc.	—			(297		)	93			(204		)
	Net income attributable to EMC Corporation	$	2,725		$	1,168		$	(1,004	)	$	2,889
		EMC Information Infrastructure
		Information			Information			RSA			EMC			Pivotal			EMC Information Infrastructure plus Pivotal
		Storage			Intelligence			Information			Information
					Group			Security			Infrastructure
	2012
	Revenues:
	Product revenues	$	10,283		$	200		$	414		$	10,897		$	106		$	11,003
	Services revenues	5,157			440			475			6,072			164			6,236
	Total consolidated revenues	15,440			640			889			16,969			270			17,239
	Gross profit	$	8,860		$	432		$	604		$	9,896		$	153		$	10,049
	Gross profit percentage	57.4		%	67.5		%	68		%	58.3		%	56.7		%	58.3		%
	Research and development										1,402			124			1,526
	Selling, general and administrative										4,484			155			4,639
	Restructuring and acquisition-related charges										—			—			—
	Total costs and expenses										5,886			279			6,165
	Operating income (loss)										$	4,010		$	(126	)	$	3,884
		EMC			VMware			Corp			Consolidated
		Information			Virtual			Reconciling
		Infrastructure plus Pivotal			Infrastructure			Items
					within EMC
	2012
	Revenues:
	Product revenues	$	11,003		$	2,058		$	—		$	13,061
	Services revenues	6,236			2,417			—			8,653
	Total consolidated revenues	17,239			4,475			—			21,714
Gross profit	$	10,049		$	3,976		$	(387	)	$	13,638
Gross profit percentage	58.3		%	88.9		%	—			62.8		%
Research and development	1,526			700			334			2,560
Selling, general and administrative	4,639			1,739			626			7,004
Restructuring and acquisition-related charges	—			—			110			110
Total costs and expenses	6,165			2,439			1,070			9,674
Operating income	3,884			1,537			(1,457		)	3,964
Non-operating income (expense)	(177		)	27			(10		)	(160		)
Income tax provision	968			271			(321		)	918
Net income	2,739			1,293			(1,146		)	2,886
Net income attributable to the non-controlling interest in VMware, Inc.	—			(255		)	102			(153		)
Net income attributable to EMC Corporation	$	2,739		$	1,038		$	(1,044	)	$	2,733
	EMC Information Infrastructure
	Information			Information			RSA			EMC			Pivotal			EMC Information Infrastructure plus Pivotal
	Storage			Intelligence			Information			Information
				Group			Security			Infrastructure
2011
Revenues:
Product revenues	$	10,042		$	209		$	441		$	10,692		$	76		$	10,768
Services revenues	4,642			452			387			5,481			54			5,535
Total consolidated revenues	14,684			661			828			16,173			130			16,303
Gross profit	$	8,291		$	425		$	470		$	9,186		$	76		$	9,262
Gross profit percentage	56.5		%	64.2		%	56.8		%	56.8		%	58.6		%	56.8		%
Research and development										1,216			70			1,286
Selling, general and administrative										4,348			120			4,468
Restructuring and acquisition-related charges										—			—			—
Total costs and expenses										5,564			190			5,754
Operating income (loss)										$	3,622		$	(114	)	$	3,508
	EMC			VMware			Corp			Consolidated
	Information			Virtual			Reconciling
	Infrastructure plus Pivotal			Infrastructure			Items
				within EMC
2011
Revenues:
Product revenues	$	10,768		$	1,823		$	—		$	12,591
Services revenues	5,535			1,882			—			7,417
Total consolidated revenues	16,303			3,705			—			20,008
Gross profit	$	9,262		$	3,189		$	(282	)	$	12,169
Gross profit percentage	56.8		%	86.1		%	—			60.8		%
Research and development	1,286			550			315			2,151
Selling, general and administrative	4,468			1,430			581			6,479
Restructuring and acquisition-related charges	—			—			97			97
Total costs and expenses	5,754			1,980			993			8,727
Operating income	3,508			1,209			(1,275		)	3,442
Non-operating income (expense)	(252		)	7			52			(193		)
Income tax provision	805			134			(299		)	640
Net income	2,451			1,082			(924		)	2,609
Net income attributable to the non-controlling interest in VMware, Inc.	—			(209		)	61			(148		)
Net income attributable to EMC Corporation	$	2,451		$	873		$	(863	)	$	2,461
Revenues By Geographic Area	'
	ur revenues are attributed to the geographic areas according to the location of the customers. Revenues by geographic area are included in the following table (table in millions):
		2013			2012			2011
	United States	$	12,230		$	11,510		$	10,550
	Europe, Middle East and Africa	6,355			5,908			5,668
	Asia Pacific and Japan	3,193			3,017			2,639
	Latin America, Mexico and Canada	1,444			1,279			1,151
	Total	$	23,222		$	21,714		$	20,008

Selected_Quarterly_Financial_D1

Selected Quarterly Financial Data (Unaudited) (Tables)	12 Months Ended
	Dec. 31, 2013
Quarterly Financial Information Disclosure [Abstract]	'
Quarterly Financial Data	'
	Quarterly financial data for 2013 and 2012 is as follows (tables in millions, except per share amounts):
	2013	Q1 2013		Q2 2013		Q3 2013		Q4 2013
	Revenues	$	5,387	$	5,614	$	5,539	$	6,682
	Gross profit	3,298		3,509		3,442		4,224
	Net income attributable to EMC Corporation	580		701		586		1,022
	Net income per weighted average share, diluted: common shareholders	$	0.26	$	0.32	$	0.27	$	0.48
	2012	Q1 2012		Q2 2012		Q3 2012		Q4 2012
	Revenues	$	5,094	$	5,311	$	5,278	$	6,030
	Gross profit	3,113		3,347		3,288		3,890
	Net income attributable to EMC Corporation	587		650		626		870
	Net income per weighted average share, diluted: common shareholders	$	0.27	$	0.29	$	0.28	$	0.39

Summary_of_Significant_Account3

Summary of Significant Accounting Policies (Detail) (USD $)

12 Months Ended

1 Months Ended

12 Months Ended

In Millions, unless otherwise specified

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2011

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2011

Jul. 31, 2012

Jun. 30, 2012

Apr. 30, 2012

Nov. 30, 2011

Dec. 31, 2013

Dec. 31, 2010

Dec. 31, 2013

Dec. 31, 2013

Dec. 31, 2013

Dec. 31, 2013

Dec. 31, 2013

Dec. 31, 2013

Dec. 31, 2013

Dec. 31, 2013

Dec. 31, 2013

Dec. 31, 2013

Dec. 31, 2013

Dec. 31, 2013

Dec. 31, 2012

Cash Flow Hedging

Cash Flow Hedging

Cash Flow Hedging

Interest rate swap contract

Interest rate swap contract

Interest rate swap contract

Interest rate swap contract

Interest rate swap contract

Interest rate swap contract

Maximum

Maximum

Furniture and fixtures

Furniture and fixtures

Equipment and software

Equipment and software

Improvements

Improvements

Buildings

Buildings

Pivotal

VMware

VMware

Foreign Exchange Contract

Cash Flow Hedging

Minimum

Maximum

Minimum

Maximum

Minimum

Maximum

Minimum

Maximum

Principles of consolidation

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Percentage of ownership interest in VMware, Inc.

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

84.00%

80.00%

80.00%

Foreign currency translation

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Net losses from foreign currency transactions

$2

$16

$13

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Derivatives

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Contract maturity

'

'

'

'

'

'

'

'

'

'

'

'

'1 year

'6 months

'

'

'

'

'

'

'

'

'

'

'

Derivative, Notional Amount

'

'

'

384

201

194

'

'

'

'

'

900

'

'

'

'

'

'

'

'

'

'

'

'

'

Realized loss on replaced interest rate swap contracts

'

'

'

'

'

'

46

'

23

141

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Accumulated realized losses in other comprehensive income related to previously-anticipated interest payments reclassified from other comprehensive income and recognized in the consolidated income statements

'

'

'

'

'

'

'

40

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Accumulated Other Comprehensive Income (Loss), Cumulative Changes in Net Gain (Loss) from Cash Flow Hedges, Effect Net of Tax

'

'

'

'

'

'

'

'

'

'

176

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Allowance for doubtful accounts receivable

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Current

62

68

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Non-current (included in other assets, net)

3

4

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Allowance for doubtful accounts receivable, total

65

72

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Property, plant and equipment

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Useful life (in years)

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'5 years

'10 years

'2 years

'10 years

'5 years

'31 years

'15 years

'51 years

'

'

'

Software development costs

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Unamortized software development costs

762

703

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Amortization expense for software development costs

427

398

380

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Capitalized amounts for software development costs

487

432

480

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Advertising

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Advertising costs

$23

$30

$44

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Noncontrolling_Interests_Addit

Non-controlling Interests - Additional Information (Details) (USD $)	Dec. 31, 2013	Dec. 31, 2012
In Millions, unless otherwise specified
Noncontrolling Interest [Line Items]	'	'
Non-controlling interests	$1,485	$1,167
VMware	'	'
Noncontrolling Interest [Line Items]	'	'
Noncontrolling Interest, Ownership Percentage by Parent	80.00%	80.00%
Voting power of outstanding common stock	97.00%	'
Non-controlling interests	1,380	1,167
Pivotal	'	'
Noncontrolling Interest [Line Items]	'	'
Noncontrolling Interest, Ownership Percentage by Parent	84.00%	'
Non-controlling interests	$105	$0

Noncontrolling_Interests_Effec

Non-controlling Interests - Effect of Changes in Ownership Interest in VMware on Equity (Details) (USD $)	3 Months Ended								12 Months Ended
In Millions, unless otherwise specified	Dec. 31, 2013	Sep. 30, 2013	Jun. 30, 2013	Mar. 31, 2013	Dec. 31, 2012	Sep. 30, 2012	Jun. 30, 2012	Mar. 31, 2012	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Noncontrolling Interest [Line Items]	'	'	'	'	'	'	'	'	'	'	'
Net income attributable to EMC Corporation	$1,022	$586	$701	$580	$870	$626	$650	$587	$2,889	$2,733	$2,461
Net transfers (to) from non-controlling interest	'	'	'	'	'	'	'	'	-333	-350	-310
VMware	'	'	'	'	'	'	'	'	'	'	'
Noncontrolling Interest [Line Items]	'	'	'	'	'	'	'	'	'	'	'
Net income attributable to EMC Corporation	'	'	'	'	'	'	'	'	2,889	2,733	'
Increase in EMC Corporation’s additional paid-in-capital for VMware’s equity issuances	'	'	'	'	'	'	'	'	92	128	'
Decrease in EMC Corporation’s additional paid-in-capital for VMware’s other equity activity	'	'	'	'	'	'	'	'	-565	-564	'
Net transfers (to) from non-controlling interest	'	'	'	'	'	'	'	'	-473	-436	'
Change from net income attributable to EMC Corporation and transfers from the non-controlling interest in VMware, Inc.	'	'	'	'	'	'	'	'	$2,416	$2,297	'

Acquisitions_Allocation_of_Pur

Acquisitions - Allocation of Purchase Price (Details) (USD $)

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2011

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2011

Dec. 31, 2012

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2012

Dec. 31, 2011

Dec. 31, 2012

Dec. 31, 2012

Dec. 31, 2012

Dec. 31, 2011

Dec. 31, 2012

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2011

In Millions, unless otherwise specified

All 2013 Acquisitions

2012 Acquisitions, excluding Nicira

All 2011 Acquisitions

VMware

Purchased / Developed technology

Purchased / Developed technology

Purchased / Developed technology

Purchased / Developed technology

Purchased / Developed technology

Tradename and trademark

Tradename and trademark

Tradename and trademark

Tradename and trademark

In-process research and development

In-process research and development

Customer relationships

Customer relationships

Customer relationships

Nicira

All 2013 Acquisitions

Nicira

2012 Acquisitions, excluding Nicira

All 2011 Acquisitions

VMware

Nicira

2012 Acquisitions, excluding Nicira

All 2011 Acquisitions

VMware

All 2013 Acquisitions

VMware

All 2013 Acquisitions

2012 Acquisitions, excluding Nicira

All 2011 Acquisitions

Nicira

Nicira

Nicira

Intangible assets:

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Intangible assets

'

'

'

$182

$311

$157

$335

$138

'

$255

$98

$266

'

$2

$1

$20

$10

$49

$34

$54

$58

Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Net

'

'

'

-8

'

-7

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Goodwill

14,424

13,840

12,155

596

'

376

893

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Deferred tax liabilities, net

'

'

'

'

'

'

-77

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Income tax payable

'

'

'

'

'

'

50

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Other current liabilities, net of current assets

'

'

'

'

'

'

-1

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Total purchase price

'

'

'

'

'

'

$1,100

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Finite-Lived Intangible Assets, Net [Abstract]

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Weighted-average useful life

'

'

'

'

'

'3 years 6 months

'

'10 years

'7 years

'5 years

'3 years

'

'10 years

'3 years

'3 years

'

'

'

'8 years

'6 years

'

Acquisitions_WeightedAverage_A

Acquisitions - Weighted-Average Assumptions Used to Calculate Fair Value of Stock Options Issued (Details)	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2013
	2012 Acquisitions, excluding Nicira	All 2013 Acquisitions
Business Acquisition [Line Items]	'	'
Expected term (in years)	'1 year 10 months 24 days	'1 year 9 months 24 days
Expected volatility	31.60%	26.40%
Risk-free interest rate	0.30%	0.30%

Acquisitions_Aggregate_Allocat

Acquisitions - Aggregate Allocation of the Purchase Price of Acquisitions to Intangible Assets (Details) (USD $)

Dec. 31, 2012

Dec. 31, 2011

Dec. 31, 2012

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2012

Dec. 31, 2011

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2011

Dec. 31, 2011

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2012

Dec. 31, 2011

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2012

Dec. 31, 2012

Dec. 31, 2012

In Millions, unless otherwise specified

2012 Acquisitions, excluding Nicira

All 2011 Acquisitions

2012 Acquisitions

All 2013 Acquisitions

Purchased / Developed technology

Purchased / Developed technology

Purchased / Developed technology

Purchased / Developed technology

Customer relationships

Customer relationships

Customer relationships

Customer relationships

Tradename and trademark

Tradename and trademark

Tradename and trademark

In-process research and development

VMware

VMware

VMware

VMware

Nicira

2012 Acquisitions, excluding Nicira

All 2011 Acquisitions

All 2013 Acquisitions

2012 Acquisitions, excluding Nicira

Acquisitions 2010, Other [Member]

All 2011 Acquisitions

All 2013 Acquisitions

Nicira

2012 Acquisitions, excluding Nicira

All 2011 Acquisitions

All 2013 Acquisitions

Nicira

Purchased / Developed technology

Tradename and trademark

In-process research and development

Nicira

Nicira

Nicira

Business Acquisition [Line Items]

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Finite-Lived Intangibles

$311

$157

$311

$182

'

$255

$98

$138

$54

'

$58

$34

'

$2

$1

$10

$335

$266

$20

$49

Finite-Lived Intangible Assets, Net [Abstract]

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Weighted-average useful life

'

'3 years 6 months

'5 years

'

'7 years

'5 years

'3 years

'10 years

'6 years

'4 years

'

'8 years

'10 years

'3 years

'3 years

'

'

'

'

'

Acquisitions_Additional_Inform

Acquisitions - Additional Information (Details) (USD $)

Dec. 31, 2013

Dec. 31, 2012

Jun. 30, 2012

Dec. 31, 2011

Dec. 31, 2013

Dec. 31, 2012

Jun. 30, 2012

Dec. 31, 2011

Dec. 31, 2013

Dec. 31, 2013

Dec. 31, 2013

Dec. 31, 2012

Aug. 24, 2012

Dec. 31, 2012

Dec. 31, 2011

Dec. 31, 2013

Dec. 31, 2011

Dec. 31, 2012

Dec. 31, 2013

Aug. 24, 2012

Dec. 31, 2012

Dec. 31, 2013

Dec. 31, 2011

In Millions, except Per Share data, unless otherwise specified

All 2013 Acquisitions

2012 Acquisitions

XtremIO

All 2011 Acquisitions

EMC

EMC

VMware

VMware

VMware

VMware

VMware

Developed Technology Rights

Developed Technology Rights

Developed Technology Rights

In-process research and development

In-process research and development

In-process research and development

Customer relationships

Customer relationships

Entity

Entity

All 2013 Acquisitions

2012 Acquisitions

All 2013 Acquisitions

2012 Acquisitions

Nicira

Nicira

All 2011 Acquisitions

All 2013 Acquisitions

All 2011 Acquisitions

VMware

All 2013 Acquisitions

VMware

VMware

All 2013 Acquisitions

All 2011 Acquisitions

Entity

Entity

Entity

Entity

Entity

Nicira

Nicira

Nicira

Business Acquisition [Line Items]

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Finite-Lived Intangible Asset, Useful Life

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'8 years

'

'

'

Business acquisition, aggregate consideration for businesses

'

'

'

'

$771

$1,060

'

$540

'

'

'

'

$1,100

'

'

'

'

'

'

'

'

'

'

Cash consideration for acquisition of business, net of cash acquired

'

'

'

'

770

1,053

'

537

'

'

'

'

1,083

'

'

'

'

'

'

'

'

'

'

Business acquisition, fair value of stock options issued

'

'

'

'

1

7

'

3

'

'

'

'

17

'

'

'

'

'

'

'

'

'

'

Number of stock options issued in acquisition

'

'

'

'

'

'

'

'

'

'

'

'

1

'

'

'

'

'

'

'

'

'

'

Number of shares of stock issued in acquisition

'

'

'

'

'

'

'

'

'

'

'

'

1

'

'

'

'

'

'

'

'

'

'

Acquisition-date closing share price

'

'

'

'

'

'

'

'

'

'

'

'

$92.21

'

'

'

'

'

'

'

'

'

'

Stock options issued in acquisition, expected term

'

'

'

'

'

'

'

'

'

'

'

'

'2 years 8 months 12 days

'

'

'

'

'

'

'

'

'

'

Stock options issued in acquisition, risk-free interest rate

'

'

'

'

0.30%

'

'

'

'

'

'

'

0.30%

'

'

'

'

'

'

'

'

'

'

Stock options issued in acquisition, annualized volatility

'

'

'

'

26.40%

'

'

'

'

'

'

'

35.70%

'

'

'

'

'

'

'

'

'

'

Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Expected Dividend Rate

'

'

'

'

1.50%

'

'

'

'

'

'

'

0.00%

'

'

'

'

'

'

'

'

'

'

Number of Businesses Acquired

'

'

'

'

8

16

'

7

5

11

2

5

'

'

6

'

'

'

'

'

'

'

'

Business acquisition, adjustment to fair value of previously held interests, recognized in other income

'

'

-32

'

'

'

32

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Consideration of acquisitions allocated to goodwill

14,424

13,840

'

12,155

596

819

'

376

'

'

'

'

'

893

'

'

'

'

'

'

'

'

'

Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Finite-Lived Intangibles

'

'

'

'

182

311

'

157

'

'

'

'

'

335

'

138

98

266

10

'

49

34

58

Consideration of acquisitions allocated to net assets (liabilities)

'

'

'

'

($8)

($70)

'

($7)

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Intangibles_and_Goodwill_Intan

Intangibles and Goodwill - Intangible Assets, Excluding Goodwill (Details) (USD $)	Dec. 31, 2013	Dec. 31, 2012
In Millions, unless otherwise specified
Intangible Assets [Line Items]	'	'
Gross Carrying Amount	$4,412	$4,276
Accumulated Amortization	-2,632	-2,241
Net Book Value	1,780	2,035
Purchased / Developed technology	'	'
Intangible Assets [Line Items]	'	'
Gross Carrying Amount	2,356	2,233
Accumulated Amortization	-1,429	-1,207
Net Book Value	927	1,026
Patents	'	'
Intangible Assets [Line Items]	'	'
Gross Carrying Amount	225	225
Accumulated Amortization	-102	-87
Net Book Value	123	138
Software licenses	'	'
Intangible Assets [Line Items]	'	'
Gross Carrying Amount	101	96
Accumulated Amortization	-90	-88
Net Book Value	11	8
Trademarks and tradenames	'	'
Intangible Assets [Line Items]	'	'
Gross Carrying Amount	171	173
Accumulated Amortization	-118	-102
Net Book Value	53	71
Customer relationships and customer lists	'	'
Intangible Assets [Line Items]	'	'
Gross Carrying Amount	1,386	1,378
Accumulated Amortization	-855	-724
Net Book Value	531	654
Leasehold interest	'	'
Intangible Assets [Line Items]	'	'
Gross Carrying Amount	145	145
Accumulated Amortization	-11	-7
Net Book Value	134	138
Other	'	'
Intangible Assets [Line Items]	'	'
Gross Carrying Amount	28	26
Accumulated Amortization	-27	-26
Net Book Value	$1	$0

Intangibles_and_Goodwill_Amort

Intangibles and Goodwill - Amortization Expense on Intangible Assets for the Next Five Years (Details) (USD $)	Dec. 31, 2013
In Millions, unless otherwise specified
Goodwill and Intangible Assets Disclosure [Abstract]	'
2014	$360
2015	316
2016	260
2017	210
2018	179
Total	$1,325

Intangibles_and_Goodwill_Chang

Intangibles and Goodwill - Changes in Carrying Amount of Goodwill (Details) (USD $)	12 Months Ended
In Millions, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012
Goodwill [Roll Forward]	'	'
Balance, beginning of the year	$13,840	$12,155
Goodwill resulting from acquisitions	597	1,724
Finalization of purchase price allocations and other, net	-13	-10
Goodwill de-recognized in divestiture of business	0	'
Balance, end of the year	14,424	13,840
Information Storage	'	'
Goodwill [Roll Forward]	'	'
Balance, beginning of the year	7,442	7,034
Goodwill resulting from acquisitions	145	438
Finalization of purchase price allocations and other, net	11	-1
Goodwill de-recognized in divestiture of business	-112	'
Balance, end of the year	7,486	7,442
Information Intelligence Group	'	'
Goodwill [Roll Forward]	'	'
Balance, beginning of the year	1,484	1,469
Goodwill resulting from acquisitions	1	15
Finalization of purchase price allocations and other, net	2	0
Goodwill transferred in formation of Pivotal	0	'
Balance, end of the year	1,487	1,484
RSA Information Security	'	'
Goodwill [Roll Forward]	'	'
Balance, beginning of the year	2,022	1,849
Goodwill resulting from acquisitions	181	179
Finalization of purchase price allocations and other, net	0	-6
Goodwill transferred in formation of Pivotal	0	'
Balance, end of the year	2,203	2,022
Pivotal	'	'
Goodwill [Roll Forward]	'	'
Balance, beginning of the year	0	0
Goodwill resulting from acquisitions	37	0
Finalization of purchase price allocations and other, net	0	0
Goodwill de-recognized in divestiture of business	140	'
Balance, end of the year	177	0
VMware Virtual Infrastructure Within EMC Corp	'	'
Goodwill [Roll Forward]	'	'
Balance, beginning of the year	2,892	1,803
Goodwill resulting from acquisitions	233	1,092
Finalization of purchase price allocations and other, net	-26	-3
Goodwill de-recognized in divestiture of business	28	'
Balance, end of the year	3,071	2,892
Iomega	'	'
Goodwill [Roll Forward]	'	'
Goodwill transferred in formation of Pivotal	'	-29
Iomega | Information Storage	'	'
Goodwill [Roll Forward]	'	'
Goodwill transferred in formation of Pivotal	'	-29
Iomega | Information Intelligence Group	'	'
Goodwill [Roll Forward]	'	'
Goodwill transferred in formation of Pivotal	'	0
Iomega | RSA Information Security	'	'
Goodwill [Roll Forward]	'	'
Goodwill transferred in formation of Pivotal	'	0
Iomega | Pivotal	'	'
Goodwill [Roll Forward]	'	'
Goodwill transferred in formation of Pivotal	'	0
Iomega | VMware Virtual Infrastructure Within EMC Corp	'	'
Goodwill [Roll Forward]	'	'
Goodwill transferred in formation of Pivotal	'	$0

Intangibles_and_Goodwill_Addit

Intangibles and Goodwill - Additional Information (Details) (USD $)	12 Months Ended
In Millions, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Goodwill [Line Items]	'	'	'
Portion of acquisition price attributable to intangible assets	$0	$0	$151
Amortization expense on intangible assets	389	365	342
All Technology Companies | Patents	'	'	'
Goodwill [Line Items]	'	'	'
Payments to acquire intangible asset portfolio	'	'	450
EMC | Patents	'	'	'
Goodwill [Line Items]	'	'	'
Payments to acquire intangible asset portfolio	'	'	113
Assigned useful life (in years)	'	'	'10 years
VMware Roche Transaction	'	'	'
Goodwill [Line Items]	'	'	'
Payments to acquire ground lease	'	'	225
Portion of acquisition price attributable to property, plant and equipment, net	'	'	74
VMware Roche Transaction | Leasehold interest	'	'	'
Goodwill [Line Items]	'	'	'
Portion of acquisition price attributable to intangible assets	'	'	151
Intangible Assets, Net | VMware Roche Transaction | Leasehold interest	'	'	'
Goodwill [Line Items]	'	'	'
Portion of acquisition price attributable to intangible assets	'	'	$147

Debt_Key_Components_of_Longter

Debt Key Components of Long-term Debt (Details) (USD $)	12 Months Ended		6 Months Ended
In Millions, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2013	Dec. 31, 2013	Dec. 31, 2013	Dec. 31, 2013
			Long-term Debt	Long-term Notes $2.5B	Long-term Notes $2.0B	Long-term Notes $1.0B
Debt Instrument [Line Items]	'	'	'	'	'	'
Debt Instrument, Unamortized Discount	'	'	$6	'	'	'
Fair Value Inputs, Discount Rate	1.00%	'	'	99.94%	99.76%	99.93%
Long-term debt	$5,494	$0	'	$2,499	$1,996	$999
Debt Instrument, Interest Rate During Period	'	'	2.54%	'	'	'

Debt_Key_Components_of_Convert

Debt - Key Components of Convertible Debt (Detail) (Convertible Senior Notes 2011 and 2013, USD $)	12 Months Ended
In Millions, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Convertible Senior Notes 2011 and 2013	'	'	'
Debt Instrument [Line Items]	'	'	'
Contractual interest expense on the coupon	$27	$30	$58
Amortization of the discount component recognized as interest expense	58	61	116
Total interest expense on the convertible debt	$85	$91	$174

Debt_Additional_Information_De

Debt - Additional Information (Detail) (USD $)

1 Months Ended

12 Months Ended

1 Months Ended

0 Months Ended

1 Months Ended

12 Months Ended

0 Months Ended

1 Months Ended

12 Months Ended

0 Months Ended

1 Months Ended

3 Months Ended

1 Months Ended

3 Months Ended

Share data in Millions, except Per Share data, unless otherwise specified

Nov. 30, 2006

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2011

Jul. 31, 2012

Jun. 30, 2012

Apr. 30, 2012

Nov. 30, 2011

Dec. 31, 2013

Dec. 31, 2010

Jan. 07, 2014

Nov. 30, 2006

Dec. 31, 2013

Nov. 13, 2006

Jan. 09, 2012

Nov. 13, 2006

Nov. 30, 2006

Dec. 31, 2013

Dec. 31, 2011

Jan. 07, 2014

Jan. 09, 2012

Nov. 30, 2006

Dec. 31, 2011

Dec. 31, 2013

Nov. 30, 2006

Nov. 13, 2006

Mar. 31, 2012

Dec. 31, 2013

Jun. 30, 2013

Interest rate swap contract

Interest rate swap contract

Interest rate swap contract

Interest rate swap contract

Interest rate swap contract

Interest rate swap contract

Convertible Senior Notes 2013

Convertible Senior Notes 2013

Convertible Senior Notes 2013

Convertible Senior Notes 2013

Convertible Senior Notes 2011

Convertible Senior Notes 2011

Convertible Senior Notes 2011 and 2013

Convertible Senior Notes 2011 and 2013

Convertible Senior Notes 2011 and 2013

Purchased Options

Purchased Options

Purchased Options

Purchased Options

Purchased Options

Sold Warrants

Sold Warrants

Exercised Warrants

Warrant

Long-term Debt

Group 1

Group 2

Debt Instrument, Fair Value Disclosure

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

$5,500,000,000

Issuance date

13-Nov-06

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Senior Notes

'

'

'

'

'

'

'

'

'

'

'

'

'

1,725,000,000

'

1,725,000,000

'

'

'

'

'

'

'

'

'

'

'

'

'

Proceeds from issuance of senior unsecured obligations

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

3,500,000,000

'

'

'

'

'

'

'

'

'

'

'

'

Cash payment to noteholders for outstanding principal of converted Notes

'

'

'

'

'

'

'

'

'

'

1,700,000,000

'

'

'

1,700,000,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Shares issued to noteholders for the excess of the conversion value over the principal amount of converted Notes

'

'

'

'

'

'

'

'

'

'

35

'

'

'

30

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Value of the conversion value over the principal amount of converted Notes

'

'

'

'

'

'

'

'

'

'

858,000,000

'

'

'

661,000,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Observation period

'

'

'

'

'

'

'

'

'

'

'

'

'20 days

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Conversion rate for the 2013 Notes will be 62.1978 shares of our common stock per one thousand dollars of principal amount of 2013 Notes

'

'

'

'

'

'

'

'

'

'

'

'

62.6978

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Conversion ratio, principal amount basis

'

'

'

'

'

'

'

'

'

'

'

'

1,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Conversion premium

'

'

'

'

'

'

'

'

'

'

'

'

26.50%

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Conversion price

'

'

'

'

'

'

'

'

'

'

'

'

$15.95

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Semi-annual interest rate

'

'

'

'

'

'

'

'

'

'

'

'

'

1.75%

'

1.75%

'

'

'

'

'

'

'

'

'

'

'

'

'

Debt Instrument, frequency of periodic payment

'

'

'

'

'

'

'

'

'

'

'

'semi-annually

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Effective interest rate

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

5.60%

5.60%

'

'

'

'

'

'

'

'

'

'

Incremental common shares attributable to call options and warrants

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

215

'

'

215

'

'

'

'

Aggregate amount paid for purchased options

'

0

70,000,000

141,000,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

669,000,000

'

'

'

'

'

'

'

Purchased options exercised

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

107

'

'

'

'

'

'

Purchased options shares received

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

35

30

'

'

'

'

'

'

'

'

Purchased options remaining

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

107

'

'

'

'

'

Common stock at an exercise price

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

$19.55

$19.31

'

'

'

Proceeds from issuance of warrants

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

391,000,000

'

'

'

'

Shares issues for exercised warrants

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

32

'

'

Warrants and Rights Outstanding

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

108,000,000

'

Conversion premium based on the closing price

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

53.20%

'

'

'

'

Closing price per share

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

$12.61

'

'

'

Aggregate notional amount of interest rate swap contracts designated as cash flow hedges

'

'

'

'

'

'

'

'

'

900,000,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Realized loss on replaced interest rate swap contracts

'

'

'

'

46,000,000

'

23,000,000

141,000,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Accumulated realized losses in other comprehensive income related to previously-anticipated interest payments reclassified from other comprehensive income and recognized in the consolidated income statements

'

'

'

'

'

40,000,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Unrealized gain on derivatives

'

'

'

'

'

'

'

'

$176,000,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Fair_Value_of_Financial_Assets2

Fair Value of Financial Assets and Liabilities - Composition of Investments (Detail) (USD $)	12 Months Ended
In Millions, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012
Schedule of Available-for-sale Securities [Line Items]	'	'
Available-for-sale Securities, Gross Unrealized Gain	'	$0
U.S. government and agency obligations	'	'
Schedule of Available-for-sale Securities [Line Items]	'	'
Amortized Cost	3,726	2,191
Available-for-sale Securities, Gross Unrealized Gain	4	10
Available-for-sale Securities, Gross Unrealized Loss	-3	-1
Available-for-sale securities	3,727	2,200
U.S. corporate debt securities	'	'
Schedule of Available-for-sale Securities [Line Items]	'	'
Amortized Cost	2,260	1,480
Available-for-sale Securities, Gross Unrealized Gain	8	10
Available-for-sale Securities, Gross Unrealized Loss	-2	0
Available-for-sale securities	2,266	1,490
High yield corporate debt securities	'	'
Schedule of Available-for-sale Securities [Line Items]	'	'
Amortized Cost	515	486
Available-for-sale Securities, Gross Unrealized Gain	19	34
Available-for-sale Securities, Gross Unrealized Loss	-3	-1
Available-for-sale securities	531	519
Asset-backed securities	'	'
Schedule of Available-for-sale Securities [Line Items]	'	'
Amortized Cost	0	2
Available-for-sale Securities, Gross Unrealized Gain	0	0
Available-for-sale Securities, Gross Unrealized Loss	0	0
Available-for-sale securities	0	2
Municipal obligations	'	'
Schedule of Available-for-sale Securities [Line Items]	'	'
Amortized Cost	860	1,032
Available-for-sale Securities, Gross Unrealized Gain	3	3
Available-for-sale Securities, Gross Unrealized Loss	0	0
Available-for-sale securities	863	1,035
Auction rate securities	'	'
Schedule of Available-for-sale Securities [Line Items]	'	'
Amortized Cost	63	74
Available-for-sale Securities, Gross Unrealized Gain	0	'
Available-for-sale Securities, Gross Unrealized Loss	-3	-4
Available-for-sale securities	60	70
Foreign debt securities	'	'
Schedule of Available-for-sale Securities [Line Items]	'	'
Amortized Cost	2,152	1,270
Available-for-sale Securities, Gross Unrealized Gain	6	9
Available-for-sale Securities, Gross Unrealized Loss	-3	0
Available-for-sale securities	2,155	1,279
Total fixed income securities	'	'
Schedule of Available-for-sale Securities [Line Items]	'	'
Amortized Cost	9,576	6,535
Available-for-sale Securities, Gross Unrealized Gain	40	66
Available-for-sale Securities, Gross Unrealized Loss	-14	-6
Available-for-sale securities	9,602	6,595
Publicly traded equity securities	'	'
Schedule of Available-for-sale Securities [Line Items]	'	'
Amortized Cost	72	47
Available-for-sale Securities, Gross Unrealized Gain	24	41
Available-for-sale Securities, Gross Unrealized Loss	-1	-1
Available-for-sale securities	95	87
Total	'	'
Schedule of Available-for-sale Securities [Line Items]	'	'
Amortized Cost	9,648	6,582
Available-for-sale Securities, Gross Unrealized Gain	64	107
Available-for-sale Securities, Gross Unrealized Loss	-15	-7
Available-for-sale securities	$9,697	$6,682

Fair_Value_of_Financial_Assets3

Fair Value of Financial Assets and Liabilities - Fair Value Hierarchy For Financial Assets And Liabilities Measured At Fair Value (Detail) (USD $)	Dec. 31, 2013	Dec. 31, 2012
Fair Value of Financial Assets and Liabilities [Line Items]	'	'
Total cash and investments	$17,588,000,000	$11,396,000,000
Investments in and Advance to Affiliates, Subsidiaries, Associates, and Joint Ventures	-35,000,000	-33,000,000
Cash	'	'
Fair Value of Financial Assets and Liabilities [Line Items]	'	'
Total cash and investments	1,725,000,000	1,454,000,000
Cash equivalents	'	'
Fair Value of Financial Assets and Liabilities [Line Items]	'	'
Total cash and investments	6,166,000,000	3,260,000,000
U.S. government and agency obligations	'	'
Fair Value of Financial Assets and Liabilities [Line Items]	'	'
Total cash and investments	3,727,000,000	2,200,000,000
U.S. corporate debt securities	'	'
Fair Value of Financial Assets and Liabilities [Line Items]	'	'
Total cash and investments	2,266,000,000	1,490,000,000
High yield corporate debt securities	'	'
Fair Value of Financial Assets and Liabilities [Line Items]	'	'
Total cash and investments	531,000,000	519,000,000
Asset-backed securities	'	'
Fair Value of Financial Assets and Liabilities [Line Items]	'	'
Total cash and investments	'	2,000,000
Municipal obligations	'	'
Fair Value of Financial Assets and Liabilities [Line Items]	'	'
Total cash and investments	863,000,000	1,035,000,000
Commodity derivative assets	'	'
Fair Value of Financial Assets and Liabilities [Line Items]	'	'
Commodity derivative assets	-4,000,000	-1,000,000
Auction rate securities	'	'
Fair Value of Financial Assets and Liabilities [Line Items]	'	'
Total cash and investments	60,000,000	70,000,000
Foreign debt securities	'	'
Fair Value of Financial Assets and Liabilities [Line Items]	'	'
Total cash and investments	2,155,000,000	1,279,000,000
Publicly traded equity securities	'	'
Fair Value of Financial Assets and Liabilities [Line Items]	'	'
Total cash and investments	95,000,000	87,000,000
Strategic investments held at cost	'	'
Fair Value of Financial Assets and Liabilities [Line Items]	'	'
Total cash and investments	379,000,000	364,000,000
Convertible debt carried at discounted cost	'	'
Fair Value of Financial Assets and Liabilities [Line Items]	'	'
Convertible debt carried at discounted cost	'	-2,666,000,000
Long-term Debt	'	'
Fair Value of Financial Assets and Liabilities [Line Items]	'	'
Debt Instrument, Fair Value Disclosure	-5,419,000,000	'
Foreign exchange derivative assets/liabilities	'	'
Fair Value of Financial Assets and Liabilities [Line Items]	'	'
Foreign exchange derivative assets	31,000,000	30,000,000
Foreign exchange derivative liabilities	-20,000,000	-35,000,000
Level 1	'	'
Fair Value of Financial Assets and Liabilities [Line Items]	'	'
Total cash and investments	9,291,000,000	5,766,000,000
Investments in and Advance to Affiliates, Subsidiaries, Associates, and Joint Ventures	'	'
Level 1 | Cash	'	'
Fair Value of Financial Assets and Liabilities [Line Items]	'	'
Total cash and investments	1,725,000,000	1,454,000,000
Level 1 | Cash equivalents	'	'
Fair Value of Financial Assets and Liabilities [Line Items]	'	'
Total cash and investments	5,674,000,000	2,898,000,000
Level 1 | U.S. government and agency obligations	'	'
Fair Value of Financial Assets and Liabilities [Line Items]	'	'
Total cash and investments	1,797,000,000	1,327,000,000
Level 1 | U.S. corporate debt securities	'	'
Fair Value of Financial Assets and Liabilities [Line Items]	'	'
Total cash and investments	'	'
Level 1 | High yield corporate debt securities	'	'
Fair Value of Financial Assets and Liabilities [Line Items]	'	'
Total cash and investments	'	'
Level 1 | Asset-backed securities	'	'
Fair Value of Financial Assets and Liabilities [Line Items]	'	'
Total cash and investments	'	'
Level 1 | Municipal obligations	'	'
Fair Value of Financial Assets and Liabilities [Line Items]	'	'
Total cash and investments	'	'
Level 1 | Commodity derivative assets	'	'
Fair Value of Financial Assets and Liabilities [Line Items]	'	'
Commodity derivative assets	'	'
Level 1 | Auction rate securities	'	'
Fair Value of Financial Assets and Liabilities [Line Items]	'	'
Total cash and investments	'	'
Level 1 | Foreign debt securities	'	'
Fair Value of Financial Assets and Liabilities [Line Items]	'	'
Total cash and investments	'	'
Level 1 | Publicly traded equity securities	'	'
Fair Value of Financial Assets and Liabilities [Line Items]	'	'
Total cash and investments	95,000,000	87,000,000
Level 1 | Strategic investments held at cost	'	'
Fair Value of Financial Assets and Liabilities [Line Items]	'	'
Total cash and investments	'	'
Level 1 | Convertible debt carried at discounted cost	'	'
Fair Value of Financial Assets and Liabilities [Line Items]	'	'
Convertible debt carried at discounted cost	'	'
Level 1 | Long-term Debt	'	'
Fair Value of Financial Assets and Liabilities [Line Items]	'	'
Debt Instrument, Fair Value Disclosure	0	'
Level 1 | Foreign exchange derivative assets/liabilities	'	'
Fair Value of Financial Assets and Liabilities [Line Items]	'	'
Foreign exchange derivative assets	'	'
Foreign exchange derivative liabilities	'	'
Level 2	'	'
Fair Value of Financial Assets and Liabilities [Line Items]	'	'
Total cash and investments	8,237,000,000	5,560,000,000
Investments in and Advance to Affiliates, Subsidiaries, Associates, and Joint Ventures	'	'
Level 2 | Cash	'	'
Fair Value of Financial Assets and Liabilities [Line Items]	'	'
Total cash and investments	'	'
Level 2 | Cash equivalents	'	'
Fair Value of Financial Assets and Liabilities [Line Items]	'	'
Total cash and investments	492,000,000	362,000,000
Level 2 | U.S. government and agency obligations	'	'
Fair Value of Financial Assets and Liabilities [Line Items]	'	'
Total cash and investments	1,930,000,000	873,000,000
Level 2 | U.S. corporate debt securities	'	'
Fair Value of Financial Assets and Liabilities [Line Items]	'	'
Total cash and investments	2,266,000,000	1,490,000,000
Level 2 | High yield corporate debt securities	'	'
Fair Value of Financial Assets and Liabilities [Line Items]	'	'
Total cash and investments	531,000,000	519,000,000
Level 2 | Asset-backed securities	'	'
Fair Value of Financial Assets and Liabilities [Line Items]	'	'
Total cash and investments	'	2,000,000
Level 2 | Municipal obligations	'	'
Fair Value of Financial Assets and Liabilities [Line Items]	'	'
Total cash and investments	863,000,000	1,035,000,000
Level 2 | Commodity derivative assets	'	'
Fair Value of Financial Assets and Liabilities [Line Items]	'	'
Commodity derivative assets	-4,000,000	-1,000,000
Level 2 | Auction rate securities	'	'
Fair Value of Financial Assets and Liabilities [Line Items]	'	'
Total cash and investments	'	'
Level 2 | Foreign debt securities	'	'
Fair Value of Financial Assets and Liabilities [Line Items]	'	'
Total cash and investments	2,155,000,000	1,279,000,000
Level 2 | Publicly traded equity securities	'	'
Fair Value of Financial Assets and Liabilities [Line Items]	'	'
Total cash and investments	'	'
Level 2 | Strategic investments held at cost	'	'
Fair Value of Financial Assets and Liabilities [Line Items]	'	'
Total cash and investments	'	'
Level 2 | Convertible debt carried at discounted cost	'	'
Fair Value of Financial Assets and Liabilities [Line Items]	'	'
Convertible debt carried at discounted cost	'	-2,666,000,000
Level 2 | Long-term Debt	'	'
Fair Value of Financial Assets and Liabilities [Line Items]	'	'
Debt Instrument, Fair Value Disclosure	-5,419,000,000	'
Level 2 | Foreign exchange derivative assets/liabilities	'	'
Fair Value of Financial Assets and Liabilities [Line Items]	'	'
Foreign exchange derivative assets	31,000,000	30,000,000
Foreign exchange derivative liabilities	-20,000,000	-35,000,000
Level 3	'	'
Fair Value of Financial Assets and Liabilities [Line Items]	'	'
Total cash and investments	60,000,000	70,000,000
Investments in and Advance to Affiliates, Subsidiaries, Associates, and Joint Ventures	-35,000,000	-33,000,000
Level 3 | Cash	'	'
Fair Value of Financial Assets and Liabilities [Line Items]	'	'
Total cash and investments	'	'
Level 3 | Cash equivalents	'	'
Fair Value of Financial Assets and Liabilities [Line Items]	'	'
Total cash and investments	'	'
Level 3 | U.S. government and agency obligations	'	'
Fair Value of Financial Assets and Liabilities [Line Items]	'	'
Total cash and investments	'	'
Level 3 | U.S. corporate debt securities	'	'
Fair Value of Financial Assets and Liabilities [Line Items]	'	'
Total cash and investments	'	'
Level 3 | High yield corporate debt securities	'	'
Fair Value of Financial Assets and Liabilities [Line Items]	'	'
Total cash and investments	'	'
Level 3 | Asset-backed securities	'	'
Fair Value of Financial Assets and Liabilities [Line Items]	'	'
Total cash and investments	'	'
Level 3 | Municipal obligations	'	'
Fair Value of Financial Assets and Liabilities [Line Items]	'	'
Total cash and investments	'	'
Level 3 | Commodity derivative assets	'	'
Fair Value of Financial Assets and Liabilities [Line Items]	'	'
Commodity derivative assets	'	'
Level 3 | Auction rate securities	'	'
Fair Value of Financial Assets and Liabilities [Line Items]	'	'
Total cash and investments	60,000,000	70,000,000
Level 3 | Foreign debt securities	'	'
Fair Value of Financial Assets and Liabilities [Line Items]	'	'
Total cash and investments	'	'
Level 3 | Publicly traded equity securities	'	'
Fair Value of Financial Assets and Liabilities [Line Items]	'	'
Total cash and investments	'	'
Level 3 | Strategic investments held at cost	'	'
Fair Value of Financial Assets and Liabilities [Line Items]	'	'
Total cash and investments	379,000,000	364,000,000
Level 3 | Convertible debt carried at discounted cost	'	'
Fair Value of Financial Assets and Liabilities [Line Items]	'	'
Convertible debt carried at discounted cost	'	'
Level 3 | Long-term Debt	'	'
Fair Value of Financial Assets and Liabilities [Line Items]	'	'
Debt Instrument, Fair Value Disclosure	0	'
Level 3 | Foreign exchange derivative assets/liabilities	'	'
Fair Value of Financial Assets and Liabilities [Line Items]	'	'
Foreign exchange derivative assets	'	'
Foreign exchange derivative liabilities	'	'

Fair_Value_of_Financial_Assets4

Fair Value of Financial Assets and Liabilities - Changes In Fair Value of Level 3 Financial Assets (Detail) (USD $)	12 Months Ended
In Millions, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012
Auction rate securities	'	'
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]	'	'
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Sales	($8)	$0
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]	'	'
Balance, beginning of the period	70	75
Calls at par value	-1	-7
Other-than-temporary impairment loss	-1	-3
Decrease in previously recognized unrealized losses included in other comprehensive income	0	5
Balance, end of the period	60	70
LenovoEMC	'	'
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]	'	'
Balance, beginning of the period	33	0
Realized gain included in other income (expense), net	2	33
Balance, end of the period	$35	$33

Fair_Value_of_Financial_Assets5

Fair Value of Financial Assets and Liabilities - Unrealized Losses on Investments by Investment Category and Length of Time in Continuous Unrealized Loss Position (Detail) (USD $)	12 Months Ended
In Millions, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012
Schedule of Available-for-sale Securities [Line Items]	'	'
Less Than 12 Months, Fair Value	$2,559	$912
Less Than 12 Months, Gross Unrealized Losses	-11	-2
12 Months or Greater, Fair Value	128	97
12 Months or Greater, Gross Unrealized Losses	-4	-5
Total, Fair Value	2,687	1,009
Total, Gross Unrealized Losses	-15	-7
U.S. government and agency obligations	'	'
Schedule of Available-for-sale Securities [Line Items]	'	'
Less Than 12 Months, Fair Value	1,161	188
Less Than 12 Months, Gross Unrealized Losses	-3	-1
12 Months or Greater, Fair Value	20	12
12 Months or Greater, Gross Unrealized Losses	0	0
Total, Fair Value	1,181	200
Total, Gross Unrealized Losses	-3	-1
U.S. corporate debt securities	'	'
Schedule of Available-for-sale Securities [Line Items]	'	'
Less Than 12 Months, Fair Value	532	266
Less Than 12 Months, Gross Unrealized Losses	-2	0
12 Months or Greater, Fair Value	17	0
12 Months or Greater, Gross Unrealized Losses	0	0
Total, Fair Value	549	266
Total, Gross Unrealized Losses	-2	0
High yield corporate debt securities	'	'
Schedule of Available-for-sale Securities [Line Items]	'	'
Less Than 12 Months, Fair Value	120	21
Less Than 12 Months, Gross Unrealized Losses	-3	0
12 Months or Greater, Fair Value	0	1
12 Months or Greater, Gross Unrealized Losses	0	-1
Total, Fair Value	120	22
Total, Gross Unrealized Losses	-3	-1
Municipal obligations	'	'
Schedule of Available-for-sale Securities [Line Items]	'	'
Less Than 12 Months, Fair Value	51	258
Less Than 12 Months, Gross Unrealized Losses	0	0
12 Months or Greater, Fair Value	0	12
12 Months or Greater, Gross Unrealized Losses	0	0
Total, Fair Value	51	270
Total, Gross Unrealized Losses	0	0
Auction rate securities	'	'
Schedule of Available-for-sale Securities [Line Items]	'	'
Less Than 12 Months, Fair Value	0	0
Less Than 12 Months, Gross Unrealized Losses	0	0
12 Months or Greater, Fair Value	60	70
12 Months or Greater, Gross Unrealized Losses	-3	-4
Total, Fair Value	60	70
Total, Gross Unrealized Losses	-3	-4
Foreign debt securities	'	'
Schedule of Available-for-sale Securities [Line Items]	'	'
Less Than 12 Months, Fair Value	695	178
Less Than 12 Months, Gross Unrealized Losses	-3	0
12 Months or Greater, Fair Value	6	2
12 Months or Greater, Gross Unrealized Losses	0	0
Total, Fair Value	701	180
Total, Gross Unrealized Losses	-3	0
Publicly traded equity securities	'	'
Schedule of Available-for-sale Securities [Line Items]	'	'
Less Than 12 Months, Fair Value	0	1
Less Than 12 Months, Gross Unrealized Losses	0	-1
12 Months or Greater, Fair Value	25	0
12 Months or Greater, Gross Unrealized Losses	-1	0
Total, Fair Value	25	1
Total, Gross Unrealized Losses	($1)	($1)

Fair_Value_of_Financial_Assets6

Fair Value of Financial Assets and Liabilities - Contractual Maturities of Investments (Detail) (Total fixed income securities, USD $)	Dec. 31, 2013	Dec. 31, 2012
In Millions, unless otherwise specified
Total fixed income securities	'	'
Amortized Cost Basis	'	'
Due within one year	$2,695	'
Due after 1 year through 5 years	5,855	'
Due after 5 years through 10 years	519	'
Due after 10 years	507	'
Amortized Cost Basis	9,576	6,535
Aggregate Fair Value	'	'
Due within one year	2,697	'
Due after 1 year through 5 years	5,871	'
Due after 5 years through 10 years	531	'
Due after 10 years	503	'
Aggregate Fair Value	$9,602	$6,595

Fair_Value_of_Financial_Assets7

Fair Value of Financial Assets and Liabilities - Additional Information (Detail) (USD $)

12 Months Ended

12 Months Ended

12 Months Ended

12 Months Ended

12 Months Ended

In Millions, unless otherwise specified

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2013

Dec. 31, 2013

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2013

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2013

Dec. 31, 2011

Dec. 31, 2012

Dec. 31, 2012

Dec. 31, 2013

Security

Minimum

Maximum

Municipal obligations

Municipal obligations

Publicly traded equity securities

Publicly traded equity securities

High yield corporate debt securities

High yield corporate debt securities

Asset-backed securities

Asset-backed securities

Securities (Assets)

Securities (Assets)

Foreign debt securities

Foreign debt securities

Foreign Sovereign Debt Securities

Auction rate securities

Auction rate securities

Variable Rate Demand Note

Terremark Worldwide, Inc.

XtremIO

LenovoEMC

LenovoEMC

VMware

Schedule of Available-for-sale Securities [Line Items]

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Joint Venture, Ownership Interest Percentage

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

49.00%

Number of Auction Rate Securities With Underlying Loans Which Have No Guarantees

1

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Gain on sale of investment

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

$56

$32

'

'

Available-for-sale securities

'

'

'

'

863

1,035

95

87

531

519

0

2

9,697

6,682

2,155

1,279

'

60

70

'

'

'

'

'

Average credit rating

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'A+

'

'AAA

'AA

'

'

'

'

'

'

Percentage of securities deemed soverign debt

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

4.00%

'

'

'

'

'

'

'

Auction rate securities that have partial guarantees by the U.S. government, market value

7

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Percentage of loans which collateralize auction rate securities guaranteed by FFELP

95.00%

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Coupon rate used to estimate fair value of invesments - low end of range

'

'

0.00%

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Coupon rate used to estimate fair value of invesments - high end of range

'

'

'

4.00%

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Discount rate used to estimate fair value of investments

1.00%

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

6.00%

'

Investment holding period

'5 years

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

The rate used for the discount margin to determine the estimated fair value of investment in auction rate securities

1.00%

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Short term investment, not classified in investments due within one year

$2,773

$1,422

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

$76

'

'

'

'

Contractual maturity date

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

31-Dec-14

'

'

'

'

Inventories_Components_of_Inve

Inventories - Components of Inventories (Detail) (USD $)	Dec. 31, 2013	Dec. 31, 2012
In Millions, unless otherwise specified
Inventory Disclosure [Abstract]	'	'
Work-in-process	$696	$606
Finished goods	638	595
Inventory, Net, Total	$1,334	$1,201

Accounts_and_Notes_Receivable_2

Accounts and Notes Receivable and Allowance for Credit Losses - Contractual Amounts Due under Leases (Detail) (USD $)	Dec. 31, 2013	Dec. 31, 2012
In Millions, unless otherwise specified
Receivables [Abstract]	'	'
Due within one year	$103	'
Due within two years	80	'
Due within three years	68	'
Thereafter	1	'
Total	252	329
Less amounts representing interest	-5	'
Present value	247	'
Current portion (included in accounts and notes receivable)	101	'
Long-term portion (included in other assets, net)	$146	'

Accounts_and_Notes_Receivable_3

Accounts and Notes Receivable and Allowance for Credit Losses - Allowance for Credit Losses (Detail) (USD $)	12 Months Ended
In Millions, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012
Financing Receivable, Allowance for Credit Losses [Roll Forward]	'	'
Balance, beginning of the period	$17	$24
Recoveries	-12	-15
Provisions	4	8
Balance, end of the period	$9	$17

Accounts_and_Notes_Receivable_4

Accounts and Notes Receivable and Allowance for Credit Losses - Additional Information (Detail) (USD $)	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2013
In Millions, unless otherwise specified			Future Period [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]	'	'	'
Sales of leases to third parties without recourse	'	'	$34
Gross lease receivables	$252	$329	'

Property_Plant_and_Equipment_C

Property, Plant and Equipment - Components of Property, Plant and Equipment (Detail) (USD $)	12 Months Ended
In Millions, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Property, Plant and Equipment [Line Items]	'	'	'
Property, plant and equipment, gross	$8,638	$7,733	'
Accumulated depreciation	-5,160	-4,588	'
Property, plant and equipment, net	3,478	3,145	'
Depreciation	867	780	728
Furniture and fixtures	'	'	'
Property, Plant and Equipment [Line Items]	'	'	'
Property, plant and equipment, gross	229	197	'
Equipment and software	'	'	'
Property, Plant and Equipment [Line Items]	'	'	'
Property, plant and equipment, gross	5,973	5,345	'
Buildings and improvements	'	'	'
Property, Plant and Equipment [Line Items]	'	'	'
Property, plant and equipment, gross	2,089	1,873	'
Land	'	'	'
Property, Plant and Equipment [Line Items]	'	'	'
Property, plant and equipment, gross	132	121	'
Building construction in progress	'	'	'
Property, Plant and Equipment [Line Items]	'	'	'
Property, plant and equipment, gross	215	197	'
Assets held for future use	'	'	'
Property, Plant and Equipment [Line Items]	'	'	'
Construction in progress on facilities held for future use	$74	'	'

Joint_Ventures_Detail

Joint Ventures (Detail) (USD $)	12 Months Ended			72 Months Ended
In Millions, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2013
Schedule of Equity Method Investments [Line Items]	'	'	'	'
Capital contribution	$411	$228	$383	'
VCE Company LLC	'	'	'	'
Schedule of Equity Method Investments [Line Items]	'	'	'	'
Capital contribution	'	'	'	1,132
Accumulated stock-based compensation contributed to joint venture	'	'	'	16
Consolidated ownership perentage of outstanding equity	58.00%	'	'	58.00%
Consolidated share of losses	63.00%	63.00%	63.00%	'
Loss From VCE	298	245	209	796
Revenue recognized from sales to VCE	439	286	134	'
Receivable from joint venture	$52	$44	'	$52

Accrued_Expenses_Components_of

Accrued Expenses - Components of Accrued Expenses (Detail) (USD $)	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
In Millions, unless otherwise specified
Payables and Accruals [Abstract]	'	'	'	'
Salaries and benefits	$1,078	$1,018	'	'
Product warranties	289	278	255	236
Dividends Payable, Current	205	0	'	'
Partner rebates	214	187	'	'
Restructuring, current (See Note Q)	84	76	'	'
Derivatives	23	40	'	'
Other	890	893	'	'
Accrued expenses	$2,783	$2,492	'	'

Accrued_Expenses_Activity_in_W

Accrued Expenses - Activity in Warranty Accrual for Product Warranty (Detail) (USD $)	12 Months Ended
In Millions, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Movement in Standard Product Warranty Accrual [Roll Forward]	'	'	'
Balance, beginning of the period	$278	$255	$236
Provision	198	182	175
Amounts charged to the accrual	-187	-159	-156
Balance, end of the period	$289	$278	$255

Income_Taxes_Provision_for_Inc

Income Taxes - Provision for Income Taxes (Details) (USD $)	12 Months Ended
In Millions, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Federal:	'	'	'
Current	$698	$792	$488
Deferred	-163	-80	14
Federal, total	535	712	502
State:	'	'	'
Current	84	74	70
Deferred	-23	-12	-45
State, total	61	62	25
Foreign:	'	'	'
Current	192	169	101
Deferred	-16	-25	12
Foreign, total	176	144	113
Total provision for income taxes	$772	$918	$640

Income_Taxes_Reconciliation_of

Income Taxes - Reconciliation of Income Tax Provision to Statutory Federal Tax Rate (Details)	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Income Tax Disclosure [Abstract]	'	'	'
Statutory federal tax rate	35.00%	35.00%	35.00%
State taxes, net of federal taxes	1.60%	1.30%	0.70%
Resolution of uncertain tax positions	-0.90%	-0.50%	-1.70%
Tax rate differential for international jurisdictions and other international related tax items	-15.20%	-13.60%	-14.40%
U.S. tax credits	-3.80%	-0.20%	-2.80%
International reorganization of acquired companies	0.60%	0.30%	0.00%
Permanent items	2.30%	1.50%	2.50%
Other	0.40%	0.30%	0.40%
Effective income tax rate	20.00%	24.10%	19.70%

Income_Taxes_Components_of_Cur

Income Taxes - Components of Current and Noncurrent Deferred Tax Assets and Liabilities (Details) (USD $)	Dec. 31, 2013	Dec. 31, 2012
In Millions, unless otherwise specified
Current:	'	'
Gross deferred tax assets	$1,819	$1,607
Gross deferred tax liabilities	-984	-992
Valuation allowance	-211	-183
Total deferred tax assets	1,608	1,424
Total deferred tax liabilities	-984	-992
Current assets	'	'
Current:	'	'
Accounts and notes receivable	96	68
Inventory	73	64
Accrued expenses	311	281
Deferred revenue	365	281
Equity	83	98
Net operating losses	28	29
Total current	960	826
Deferred Tax Assets, Tax Credit Carryforwards	4	5
Noncurrent assets	'	'
Current:	'	'
Deferred revenue	253	177
Net operating losses	78	98
Deferred Tax Liabilities, Equity Adjustments	-139	-144
Deferred Tax Assets, Tax Credit Carryforwards	280	242
Other comprehensive loss	109	120
Deferred Tax Assets, Gross, Noncurrent	859	781
Noncurrent liabilities	'	'
Current:	'	'
Property, plant and equipment, net	-291	-286
Intangible and other assets, net	-680	-663
Other non-current liabilities	-13	-43
Deferred Tax Liability, Total noncurrent	($984)	($992)

Income_Taxes_Rollforward_of_Gr

Income Taxes - Rollforward of Gross Consolidated Liability for Unrecognized Income Tax Benefits (Details) (USD $)	12 Months Ended
In Millions, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Reconciliation of Unrecognized Tax Benefits, Excluding Amounts Pertaining to Examined Tax Returns [Roll Forward]	'	'	'
Unrecognized tax benefits, beginning of year	$270	$197	$230
Tax positions related to current year:	'	'	'
Additions	37	25	42
Reductions	0	-1	-2
Tax positions related to prior years:	'	'	'
Additions	10	64	14
Reductions	-33	-4	-71
Settlements	-5	0	-3
Lapses in statutes of limitations	-13	-11	-13
Unrecognized tax benefits, end of year	$266	$270	$197

Income_Taxes_Additional_Inform

Income Taxes - Additional Information (Detail) (USD $)	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Operating Loss Carryforwards [Line Items]	'	'	'
Effective Income Tax Rate Reconciliation, Tax Credit, Research, Percent	3.50%	'	'
Net operating loss carryforwards and tax credit carryforwards	$54,000,000	$59,000,000	$20,000,000
International reorganization of acquired companies	0.60%	0.30%	0.00%
Effective income tax rate	20.00%	24.10%	19.70%
Net operating loss carryforward, federal	219,000,000	'	'
Net operating loss carryforward, state	277,000,000	'	'
Net operating loss carryforward, foreign	45,000,000	'	'
Valuation Allowances and Reserves, Balance	'	4,000,000	'
Valuation allowance	211,000,000	183,000,000	'
Basis differences related to investments in foreign subsidiaries consisted of undistributed earnings	10,200,000,000	8,100,000,000	'
Total cash, cash equivalents, and short-term and long-term investments	17,600,000,000	'	'
Income before income taxes from foreign operations	2,300,000,000	1,900,000,000	1,800,000,000
Income before income taxes from domestic operations	1,600,000,000	1,900,000,000	1,500,000,000
Unrecognized tax benefits, if recognized, would have been recorded as a reduction to income tax expense	261,000,000	255,000,000	187,000,000
Net reduction in uncertain tax positions	'	'	71,000,000
Recognition (reversal) of previously recorded interest expense resulting from third party settlement	9,000,000	4,000,000	1,000,000
Unrecognized tax benefits, accrued interest and penalties	42,000,000	35,000,000	32,000,000
Federal	'	'	'
Operating Loss Carryforwards [Line Items]	'	'	'
Tax credit carryforwards	2,000,000	'	'
Foreign	'	'	'
Operating Loss Carryforwards [Line Items]	'	'	'
Tax credit carryforwards	283,000,000	'	'
VMware	'	'	'
Operating Loss Carryforwards [Line Items]	'	'	'
Total cash, cash equivalents, and short-term and long-term investments	6,200,000,000	'	'
VMware | International Entities	'	'	'
Operating Loss Carryforwards [Line Items]	'	'	'
Total cash, cash equivalents, and short-term and long-term investments	4,100,000,000	'	'
EMC | International Entities	'	'	'
Operating Loss Carryforwards [Line Items]	'	'	'
Total cash, cash equivalents, and short-term and long-term investments	4,300,000,000	'	'
Other non-current assets	'	'	'
Operating Loss Carryforwards [Line Items]	'	'	'
Net non-current state and foreign deferred tax assets	$133,000,000	$116,000,000	'

Retirement_Plan_Benefits_Compo

Retirement Plan Benefits - Components of Change in Benefit Obligation of Pension Plans (Details) (USD $)	12 Months Ended
In Millions, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Defined Benefit Plan, Change in Benefit Obligation [Roll Forward]	'	'	'
Benefit obligation, at beginning of year	$539	$483	'
Interest cost	20	21	23
Benefits paid	-18	-17	'
Actuarial (gain) loss	-46	52	'
Benefit obligation, at end of year	$495	$539	$483

Retirement_Plan_Benefits_Recon

Retirement Plan Benefits - Reconciliation of Beginning and Ending Balances of Fair Value of Assets of Pension Plans (Details) (USD $)	12 Months Ended
In Millions, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012
Compensation and Retirement Disclosure [Abstract]	'	'
Fair value of plan assets, at beginning of year	$431	$397
Actual return on plan assets	35	51
Defined Benefit Plan, Contributions by Employer	1	0
Benefits paid	-18	-17
Fair value of plan assets, at end of year	$449	$431

Retirement_Plan_Benefits_Compo1

Retirement Plan Benefits - Components of Net Periodic Expense of Pension Plans (Details) (USD $)	12 Months Ended
In Millions, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Compensation and Retirement Disclosure [Abstract]	'	'	'
Interest cost	$20	$21	$23
Expected return on plan assets	-28	-26	-25
Recognized actuarial loss	15	13	11
Net periodic expense	$7	$8	$9

Retirement_Plan_Benefits_Weigh

Retirement Plan Benefits - Weighted Average Assumptions Used in Pension Plans to Determine Benefit Obligations (Details)	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Compensation and Retirement Disclosure [Abstract]	'	'	'
Discount rate	4.66%	3.70%	4.60%

Retirement_Plan_Benefits_Weigh1

Retirement Plan Benefits - Weighted Average Assumptions Used in Pension Plans to Determine Periodic Benefit Cost (Details)	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Compensation and Retirement Disclosure [Abstract]	'	'	'
Discount rate	3.71%	4.55%	5.40%
Expected long-term rate of return on plan assets	6.75%	6.75%	6.75%

Retirement_Plan_Benefits_Benef

Retirement Plan Benefits - Benefit Payments (Details) (USD $)	Dec. 31, 2013
In Millions, unless otherwise specified
Compensation and Retirement Disclosure [Abstract]	'
2013	$23
2014	25
2015	26
2016	28
2017	29
2018-2021	$163

Retirement_Plan_Benefits_Pensi

Retirement Plan Benefits - Pension Plan Assets at Fair Value (Details) (USD $)	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
In Millions, unless otherwise specified
Defined Benefit Plan Disclosure [Line Items]	'	'	'
Defined Benefit Plan, Fair Value of Plan Assets	$449	$431	$397
Level 1	'	'	'
Defined Benefit Plan Disclosure [Line Items]	'	'	'
Defined Benefit Plan, Fair Value of Plan Assets	2	2	'
Level 2	'	'	'
Defined Benefit Plan Disclosure [Line Items]	'	'	'
Defined Benefit Plan, Fair Value of Plan Assets	444	428	'
Level 3	'	'	'
Defined Benefit Plan Disclosure [Line Items]	'	'	'
Defined Benefit Plan, Fair Value of Plan Assets	0	0	'
Common collective trusts	'	'	'
Defined Benefit Plan Disclosure [Line Items]	'	'	'
Defined Benefit Plan, Fair Value of Plan Assets	330	308	'
Common collective trusts | Level 1	'	'	'
Defined Benefit Plan Disclosure [Line Items]	'	'	'
Defined Benefit Plan, Fair Value of Plan Assets	0	0	'
Common collective trusts | Level 2	'	'	'
Defined Benefit Plan Disclosure [Line Items]	'	'	'
Defined Benefit Plan, Fair Value of Plan Assets	330	308	'
Common collective trusts | Level 3	'	'	'
Defined Benefit Plan Disclosure [Line Items]	'	'	'
Defined Benefit Plan, Fair Value of Plan Assets	0	0	'
U.S. Treasury securities	'	'	'
Defined Benefit Plan Disclosure [Line Items]	'	'	'
Defined Benefit Plan, Fair Value of Plan Assets	2	2	'
U.S. Treasury securities | Level 1	'	'	'
Defined Benefit Plan Disclosure [Line Items]	'	'	'
Defined Benefit Plan, Fair Value of Plan Assets	2	2	'
U.S. Treasury securities | Level 2	'	'	'
Defined Benefit Plan Disclosure [Line Items]	'	'	'
Defined Benefit Plan, Fair Value of Plan Assets	0	0	'
U.S. Treasury securities | Level 3	'	'	'
Defined Benefit Plan Disclosure [Line Items]	'	'	'
Defined Benefit Plan, Fair Value of Plan Assets	0	0	'
Corporate debt securities	'	'	'
Defined Benefit Plan Disclosure [Line Items]	'	'	'
Defined Benefit Plan, Fair Value of Plan Assets	114	120	'
Corporate debt securities | Level 1	'	'	'
Defined Benefit Plan Disclosure [Line Items]	'	'	'
Defined Benefit Plan, Fair Value of Plan Assets	0	0	'
Corporate debt securities | Level 2	'	'	'
Defined Benefit Plan Disclosure [Line Items]	'	'	'
Defined Benefit Plan, Fair Value of Plan Assets	114	120	'
Corporate debt securities | Level 3	'	'	'
Defined Benefit Plan Disclosure [Line Items]	'	'	'
Defined Benefit Plan, Fair Value of Plan Assets	0	0	'
Plan payables, net of accrued interest and dividends	'	'	'
Defined Benefit Plan Disclosure [Line Items]	'	'	'
Defined Benefit Plan, Fair Value of Plan Assets	3	1	'
Total fixed income securities	'	'	'
Defined Benefit Plan Disclosure [Line Items]	'	'	'
Defined Benefit Plan, Fair Value of Plan Assets	$446	$430	'

Retirement_Plan_Benefits_Pensi1

Retirement Plan Benefits - Pension Plan Investments at Fair Value Represented 5% or More of Pension Plan Net Assets (Details) (Pension Plan Net Assets, Credit Concentration Risk, USD $)	Dec. 31, 2013	Dec. 31, 2012
In Millions, unless otherwise specified
Defined Benefit Plan Disclosure [Line Items]	'	'
Pension plan investments, at fair value	$385	$376
EB Daily Valued Small Cap Stock Index Fund	'	'
Defined Benefit Plan Disclosure [Line Items]	'	'
Pension plan investments, at fair value	30	26
EB Daily Valued Stock Index Fund	'	'
Defined Benefit Plan Disclosure [Line Items]	'	'
Pension plan investments, at fair value	104	86
EB Daily Valued International Stock Index Fund	'	'
Defined Benefit Plan Disclosure [Line Items]	'	'
Pension plan investments, at fair value	30	26
EB Long Term Government Bond Index	'	'
Defined Benefit Plan Disclosure [Line Items]	'	'
Pension plan investments, at fair value	40	46
EB Long Term Credit Bond Index	'	'
Defined Benefit Plan Disclosure [Line Items]	'	'
Pension plan investments, at fair value	63	68
Corporate Debt Securities	'	'
Defined Benefit Plan Disclosure [Line Items]	'	'
Pension plan investments, at fair value	$118	$124

Retirement_Plan_Benefits_Weigh2

Retirement Plan Benefits - Weighted Average Target Asset Allocations (Details)	12 Months Ended
	Dec. 31, 2013
Defined Benefit Plan Disclosure [Line Items]	'
Weighted average target asset allocation	100.00%
U.S. large capitalization equities	'
Defined Benefit Plan Disclosure [Line Items]	'
Weighted average target asset allocation	17.00%
U.S. small capitalization equities	'
Defined Benefit Plan Disclosure [Line Items]	'
Weighted average target asset allocation	4.00%
International equities	'
Defined Benefit Plan Disclosure [Line Items]	'
Weighted average target asset allocation	4.00%
U.S. long-duration fixed income	'
Defined Benefit Plan Disclosure [Line Items]	'
Weighted average target asset allocation	75.00%
High yield fixed income	'
Defined Benefit Plan Disclosure [Line Items]	'
Weighted average target asset allocation	0.00%

Retirement_Plan_Benefits_Actua

Retirement Plan Benefits - Actual Allocation of the Assets in the Pension Plan (Details)	Dec. 31, 2013	Dec. 31, 2012
Defined Benefit Plan Disclosure [Line Items]	'	'
Actual allocation of the Pension Plan assets	100.00%	100.00%
U.S. large capitalization equities	'	'
Defined Benefit Plan Disclosure [Line Items]	'	'
Actual allocation of the Pension Plan assets	33.00%	28.00%
U.S. small capitalization equities	'	'
Defined Benefit Plan Disclosure [Line Items]	'	'
Actual allocation of the Pension Plan assets	7.00%	6.00%
International equities	'	'
Defined Benefit Plan Disclosure [Line Items]	'	'
Actual allocation of the Pension Plan assets	8.00%	8.00%
U.S. long-duration fixed income	'	'
Defined Benefit Plan Disclosure [Line Items]	'	'
Actual allocation of the Pension Plan assets	49.00%	55.00%
High yield fixed income	'	'
Defined Benefit Plan Disclosure [Line Items]	'	'
Actual allocation of the Pension Plan assets	3.00%	3.00%

Retirement_Plan_Benefits_Addit

Retirement Plan Benefits - Additional Information (Details) (USD $)	12 Months Ended					72 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2013	Dec. 31, 2013	Dec. 31, 2013
				Maximum	EMC	EMC
						Maximum
Defined Benefit Plan Disclosure [Line Items]	'	'	'	'	'	'
Employer matching contribution percentage	'	'	'	6.00%	'	'
Employer matching contribution, amount per quarter	'	'	'	$750	'	'
Defined Contribution Plan, Employer Discretionary Contribution Amount	68,000,000	88,000,000	73,000,000	'	'	'
Deferred compensation program limit for employee's investment allocation in the company stock fund	'	'	'	'	'	30.00%
Fair value of company stock fund held by Pension Plan	449,000,000	431,000,000	397,000,000	'	0	'
Under-funded status of Pension Plan	46,000,000	109,000,000	'	'	'	'
Accumulated actuarial loss and prior services cost reclassified from accumulated comprehensive loss to a component of net periodic benefit cost	15,000,000	'	'	'	'	'
Pension Plans net losses, primarily the result of a decrease in the discount rate at the end of 2011	53,000,000	'	'	'	'	'
Total balance included in accumulated other comprehensive loss that will be recognized as a component of net periodic benefit cost in 2013	$10,000,000	'	'	'	'	'
Concentration risk, percentage of Pension Plan net assets	5.00%	5.00%	'	'	'	'

Commitments_and_Contingencies_1

Commitments and Contingencies - Rent Expense on Operating Leases (Details) (USD $)	12 Months Ended
In Millions, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Commitments and Contingencies Disclosure [Abstract]	'	'	'
Rent expense	$328	$312	$309
Sublease proceeds	-2	-4	-5
Net rent expense	$326	$308	$304

Commitments_and_Contingencies_2

Commitments and Contingencies - Future Operating Lease Commitments (Details) (USD $)	Dec. 31, 2013
In Millions, unless otherwise specified
Commitments and Contingencies Disclosure [Abstract]	'
2013	$294
2014	235
2015	176
2016	134
2017	94
Thereafter	679
Total minimum lease payments	$1,612

Commitments_and_Contingencies_3

Commitments and Contingencies - Additional Information (Detail) (USD $)	3 Months Ended
	Jun. 30, 2011	Dec. 31, 2013
Other Commitments [Line Items]	'	'
Customer remediation period expense	$66,000,000	'
Guarantees of subsidiaries	'	159,000,000
Outstanding purchase orders	'	2,500,000,000
Future Minimum Sublease Rentals, Operating Leases, Due Total	'	8,000,000
Minimum	'	'
Other Commitments [Line Items]	'	'
Future Minimum Sublease Rentals, Operating Leases, Due Per Year	'	1,000,000
Maximum	'	'
Other Commitments [Line Items]	'	'
Future Minimum Sublease Rentals, Operating Leases, Due Per Year	'	$2,000,000

Stockholders_Equity_Reconcilia

Stockholders' Equity - Reconciliation from Basic To Diluted Earnings Per Share for both Numerators and Denominators (Detail) (USD $)	3 Months Ended								12 Months Ended
In Millions, unless otherwise specified	Dec. 31, 2013	Sep. 30, 2013	Jun. 30, 2013	Mar. 31, 2013	Dec. 31, 2012	Sep. 30, 2012	Jun. 30, 2012	Mar. 31, 2012	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Numerator:	'	'	'	'	'	'	'	'	'	'	'
Net income attributable to EMC Corporation	$1,022	$586	$701	$580	$870	$626	$650	$587	$2,889	$2,733	$2,461
Incremental dilution from VMware	'	'	'	'	'	'	'	'	8	10	14
Net income – dilution attributable to EMC Corporation	'	'	'	'	'	'	'	'	$2,881	$2,723	$2,447
Denominator:	'	'	'	'	'	'	'	'	'	'	'
Weighted average shares, basic	'	'	'	'	'	'	'	'	2,074	2,093	2,056
Weighted common stock equivalents (in shares)	'	'	'	'	'	'	'	'	28	40	52
Assumed conversion of the 2013 Notes and associated warrants (in shares)	'	'	'	'	'	'	'	'	58	73	121
Weighted average shares, diluted (in shares)	'	'	'	'	'	'	'	'	2,160	2,206	2,229

Stockholders_Equity_Accumulate

Stockholders' Equity - Accumulated Other Comprehensive Loss, Net of Tax (Detail) (USD $)	12 Months Ended
In Millions, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Accumulated Other Comprehensive Income (Loss) [Line Items]	'	'	'
Other Comprehensive Income Before Reclassifications	($10)	'	'
Income tax provision	772	918	640
Reclassification from Accumulated Other Comprehensive Income, Current Period, Net of Tax	-21	'	'
Accumulated other comprehensive income (loss), net	-239	-208	'
Other Comprehensive Income (Loss), Net of Tax, Portion Attributable to Parent	-31	'	'
Other Comprehensive Income (Loss), Tax, Parenthetical Disclosures [Abstract]	'	'	'
Unrealized losses on temporarily impaired investments, tax benefits	0	'	'
Unrealized gains on investments, taxes	0	'	'
Unrealized gains (losses) on derivatives, taxes (benefits)	0	'	'
Recognition of actuarial net loss from pension and other postretirement plans, tax benefits	0	'	'
Accumulated Translation Adjustment	'	'	'
Accumulated Other Comprehensive Income (Loss) [Line Items]	'	'	'
Other Comprehensive Income Before Reclassifications	-44	'	'
Reclassification from Accumulated Other Comprehensive Income, Current Period, Net of Tax	0	'	'
Accumulated other comprehensive income (loss), net	-53	-9	'
Other Comprehensive Income (Loss), Net of Tax, Portion Attributable to Parent	-44	'	'
Accumulated Net Unrealized Investment Gain (Loss)	'	'	'
Accumulated Other Comprehensive Income (Loss) [Line Items]	'	'	'
Other Comprehensive Income Before Reclassifications	-22	'	'
Income tax provision	18	37	'
Reclassification from Accumulated Other Comprehensive Income, Current Period, Net of Tax	-11	'	'
Accumulated other comprehensive income (loss), net	31	64	'
Other Comprehensive Income (Loss), Net of Tax, Portion Attributable to Parent	-33	'	'
Accumulated Net Gain (Loss) from Designated or Qualifying Cash Flow Hedges	'	'	'
Accumulated Other Comprehensive Income (Loss) [Line Items]	'	'	'
Other Comprehensive Income Before Reclassifications	13	'	'
Income tax provision	-66	-67	'
Reclassification from Accumulated Other Comprehensive Income, Current Period, Net of Tax	-10	'	'
Accumulated other comprehensive income (loss), net	-106	-109	'
Other Comprehensive Income (Loss), Net of Tax, Portion Attributable to Parent	3	'	'
Accumulated Defined Benefit Plans Adjustment	'	'	'
Accumulated Other Comprehensive Income (Loss) [Line Items]	'	'	'
Other Comprehensive Income Before Reclassifications	43	'	'
Income tax provision	-61	-87	'
Reclassification from Accumulated Other Comprehensive Income, Current Period, Net of Tax	0	'	'
Accumulated other comprehensive income (loss), net	-110	-153	'
Other Comprehensive Income (Loss), Net of Tax, Portion Attributable to Parent	43	'	'
Non-controlling Interest in VMware	'	'	'
Accumulated Other Comprehensive Income (Loss) [Line Items]	'	'	'
Other Comprehensive Income Before Reclassifications	0	'	'
Reclassification from Accumulated Other Comprehensive Income, Current Period, Net of Tax	0	'	'
Accumulated other comprehensive income (loss), net	-1	-1	'
Other Comprehensive Income (Loss), Net of Tax, Portion Attributable to Parent	$0	'	'

Stockholders_Equity_Reclassifi

Stockholders' Equity Reclassification Out of Accumulated Other Comprehensive Income (Details) (USD $)	12 Months Ended
In Millions, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Reclassification Adjustment out of Accumulated Other Comprehensive Income on Derivatives [Line Items]	'	'	'
Investment income	$128	$115	$129
Income tax provision	772	918	640
Product revenues	13,690	13,061	12,591
Cost of product sales	5,650	5,259	5,320
Accumulated Net Unrealized Investment Gain (Loss)	'	'	'
Reclassification Adjustment out of Accumulated Other Comprehensive Income on Derivatives [Line Items]	'	'	'
Income tax provision	18	37	'
Accumulated Net Gain (Loss) from Designated or Qualifying Cash Flow Hedges	'	'	'
Reclassification Adjustment out of Accumulated Other Comprehensive Income on Derivatives [Line Items]	'	'	'
Income tax provision	-66	-67	'
Reclassification out of Accumulated Other Comprehensive Income | Accumulated Net Unrealized Investment Gain (Loss)	'	'	'
Reclassification Adjustment out of Accumulated Other Comprehensive Income on Derivatives [Line Items]	'	'	'
Investment income	17	'	'
Income tax provision	-6	'	'
Net of tax	11	'	'
Reclassification out of Accumulated Other Comprehensive Income | Accumulated Net Gain (Loss) from Designated or Qualifying Cash Flow Hedges	'	'	'
Reclassification Adjustment out of Accumulated Other Comprehensive Income on Derivatives [Line Items]	'	'	'
Income tax provision	-2	'	'
Income (Loss) from Continuing Operations, Including Portion Attributable to Noncontrolling Interest	12	'	'
Net of tax	10	'	'
Foreign Exchange Contract | Reclassification out of Accumulated Other Comprehensive Income | Accumulated Net Gain (Loss) from Designated or Qualifying Cash Flow Hedges	'	'	'
Reclassification Adjustment out of Accumulated Other Comprehensive Income on Derivatives [Line Items]	'	'	'
Product revenues	12	'	'
Cost of product sales	$0	'	'

Stockholders_Equity_Additional

Stockholders' Equity - Additional Information (Detail) (USD $)	1 Months Ended	3 Months Ended	12 Months Ended			36 Months Ended	69 Months Ended			18 Months Ended	1 Months Ended
Share data in Millions, except Per Share data, unless otherwise specified	Feb. 27, 2013	Dec. 31, 2013	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2015	Dec. 31, 2013	Dec. 31, 2008	Nov. 30, 2006	Jun. 30, 2014	Nov. 30, 2006
										Scenario, Forecast	Sold Warrants
Sold warrants to acquire shares of our common stock	'	'	'	'	'	'	'	'	'	'	215
Sold warrants to acquire shares of our common stock, exercise price per share	'	'	'	'	'	'	'	'	19.55	'	'
Common stock excluded from calculation of diluted earnings per share	'	'	4	4	13	'	'	'	'	'	'
Number of shares authorized for issuance	'	500	500	'	'	'	500	250	'	'	'
Total Repurchases of Common Stock, shares	'	'	122	'	'	'	345	'	'	'	'
Total Repurchases of Common Stock	'	'	$3,000,000,000	'	'	'	$7,400,000,000	'	'	'	'
Common stock, shares reserved for future issuance	'	155	155	'	'	'	155	'	'	'	'
Plan to spend for the year on common stock repurchases	'	'	'	'	'	$6,000,000,000	'	'	'	$3,500,000,000	'
Additional number of shares authorized for issuance	250	'	'	'	'	'	'	'	'	'	'
Cash dividends declared per common share	'	$0.10	$0.30	$0	$0	'	'	'	'	'	'
Common Stock, Dividends, Per Share, Cash Paid	'	$202,000,000	$415,000,000	'	'	'	'	'	'	'	'

StockBased_Compensation_Employ

Stock-Based Compensation - Employee Stock Purchase Plan Activity (Details) (USD $)	12 Months Ended
In Millions, except Per Share data, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
EMC Employee Stock Purchase - 1989 Plan | Common Stock	'	'	'
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]	'	'	'
Cash proceeds	$82	$154	$141
Common shares purchased	4	7	7
Weighted-average price per share	$20.08	$21.65	$20.44
VMware | VMware Employee Stock Purchase - 2007 Plan | VMware Class A common stock	'	'	'
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]	'	'	'
Cash proceeds	$76	$69	$57
Common shares purchased	1	1	1
Weighted-average price per share	$65.97	$77.34	$69.81

StockBased_Compensation_Stock_

Stock-Based Compensation - Stock Option Activity (Details) (USD $)	12 Months Ended
In Millions, except Per Share data, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
VMware Stock Options	'	'	'
Options Activity, Number of Shares [Roll Forward]	'	'	'
Outstanding	10	16	27
Granted	1	1	'
Forfeited	'	-1	-1
Exercised	-5	-6	-10
Outstanding	6	10	16
Exercisable	4	'	'
Vested and expected to vest	6	'	'
Options Activity, Weighted Average Exercise Price [Roll Forward]	'	'	'
Outstanding	$34.36	$35.27	$33.54
Granted	$71.53	$4.67	'
Forfeited	'	$42.07	$40.98
Exercised	$28.12	$30.44	$28.64
Outstanding	$44.12	$34.36	$35.27
Exercisable	$36.45	'	'
Vested and expected to vest	$42.84	'	'
EMC Information Infrastructure Stock Options	'	'	'
Options Activity, Number of Shares [Roll Forward]	'	'	'
Outstanding	77	112	172
Options granted relating to business acquisitions	1	2	1
Granted	0	1	2
Forfeited	-1	-2	-4
Expired	0	-1	-14
Exercised	-20	-35	-45
Outstanding	57	77	112
Exercisable	50	'	'
Vested and expected to vest	57	'	'
Options Activity, Weighted Average Exercise Price [Roll Forward]	'	'	'
Outstanding	$14.39	$13.69	$15.23
Options granted relating to business acquisitions	$3.29	$1.54	$3.24
Granted	$0	$26.80	$25.31
Forfeited	$13.36	$13.75	$13
Expired	$0	$14.19	$40.05
Exercised	$13.10	$11.65	$11.91
Outstanding	$14.56	$14.39	$13.69
Exercisable	$14.58	'	'
Vested and expected to vest	$14.59	'	'

StockBased_Compensation_Restri

Stock-Based Compensation - Restricted Stock and Restricted Stock Unit Activity (Details) (USD $)	12 Months Ended
In Millions, except Per Share data, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
VMware Restricted Stock	'	'	'
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number of Shares [Roll Forward]	'	'	'
Outstanding	12	10	10
Granted	7	8	5
Vested	-4	-4	-4
Forfeited	-2	-2	-1
Outstanding	13	12	10
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Weighted Average Grant Date Fair Value [Roll Forward]	'	'	'
Outstanding	$91.93	$72.74	$54.17
Granted	$76.20	$101.73	$91.51
Vested	$83.21	$69.01	$48.47
Forfeited	$90.55	$81.53	$64.70
Outstanding	$85.85	$91.93	$72.74
EMC Information Infrastructure Restricted Stock and Restricted Stock Units	'	'	'
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number of Shares [Roll Forward]	'	'	'
Outstanding	47	46	44
Granted	20	21	21
Vested	-15	-16	-15
Forfeited	-4	-4	-4
Outstanding	48	47	46
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Weighted Average Grant Date Fair Value [Roll Forward]	'	'	'
Outstanding	$24.39	$21.10	$17.20
Granted	$25.55	$26.57	$25.12
Vested	$22.61	$18.92	$16.44
Forfeited	$24.80	$23.09	$20.56
Outstanding	$25.43	$24.39	$21.10

StockBased_Compensation_Stock_1

Stock-Based Compensation - Stock Repurchase Programs (Details) (USD $)	12 Months Ended			1 Months Ended					12 Months Ended
In Millions, except Per Share data, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011	Aug. 31, 2013	Nov. 30, 2012	Feb. 29, 2012	Feb. 28, 2011	Mar. 31, 2010	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
				VMware Stock Repurchase Plan	VMware Stock Repurchase Plan	VMware Stock Repurchase Plan	VMware Stock Repurchase Plan	VMware Stock Repurchase Plan	VMware Stock Repurchase Plan	VMware Stock Repurchase Plan	VMware Stock Repurchase Plan
									VMware Class A common stock	VMware Class A common stock	VMware Class A common stock
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]	'	'	'	'	'	'	'	'	'	'	'
Amount Authorized	'	'	'	$700	$250	$600	$550	$400	'	'	'
Payments for Repurchase of Equity [Abstract]	'	'	'	'	'	'	'	'	'	'	'
Aggregate purchase price	$3,000	$700	$2,000	'	'	'	'	'	$508	$468	$526
Class A common shares repurchased	'	'	'	'	'	'	'	'	7	5	6
Weighted-average price per share	'	'	'	'	'	'	'	'	$76.58	$91.10	$88.37

StockBased_Compensation_Compon

Stock-Based Compensation - Components of Stock-Based Compensation Expense (Details) (USD $)	12 Months Ended
In Millions, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]	'	'	'
Stock-based compensation expense before income taxes	$935	$920	$836
Income tax benefit	226	230	193
Total stock-based compensation, net of tax	709	690	643
Cost of product sales	'	'	'
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]	'	'	'
Stock-based compensation expense before income taxes	48	52	61
Cost of services	'	'	'
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]	'	'	'
Stock-based compensation expense before income taxes	76	74	63
Research and development	'	'	'
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]	'	'	'
Stock-based compensation expense before income taxes	357	324	299
Selling, general and administrative	'	'	'
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]	'	'	'
Stock-based compensation expense before income taxes	454	470	413
Stock Options	'	'	'
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]	'	'	'
Stock-based compensation expense before income taxes	191	262	326
Income tax benefit	56	68	73
Total stock-based compensation, net of tax	135	194	253
Stock Options | Cost of product sales	'	'	'
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]	'	'	'
Stock-based compensation expense before income taxes	19	22	30
Stock Options | Cost of services	'	'	'
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]	'	'	'
Stock-based compensation expense before income taxes	15	21	25
Stock Options | Research and development	'	'	'
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]	'	'	'
Stock-based compensation expense before income taxes	75	88	106
Stock Options | Selling, general and administrative	'	'	'
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]	'	'	'
Stock-based compensation expense before income taxes	82	131	165
Restricted Stock	'	'	'
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]	'	'	'
Stock-based compensation expense before income taxes	744	658	510
Income tax benefit	170	162	120
Total stock-based compensation, net of tax	574	496	390
Restricted Stock | Cost of product sales	'	'	'
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]	'	'	'
Stock-based compensation expense before income taxes	29	30	31
Restricted Stock | Cost of services	'	'	'
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]	'	'	'
Stock-based compensation expense before income taxes	61	53	38
Restricted Stock | Research and development	'	'	'
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]	'	'	'
Stock-based compensation expense before income taxes	282	236	193
Restricted Stock | Selling, general and administrative	'	'	'
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]	'	'	'
Stock-based compensation expense before income taxes	$372	$339	$248

StockBased_Compensation_Net_Ch

Stock-Based Compensation - Net Change in Amounts Capitalized or Accrued (Details) (USD $)	12 Months Ended
In Millions, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]	'	'	'
Other assets	($269)	($174)	$62
Deferred Compensation, Share-based Payments	'	'	'
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]	'	'	'
Accrued expenses (accrued warranty expenses)	-1	-2	'
Other assets	$2	$8	'

StockBased_Compensation_Weight

Stock-Based Compensation - Weighted Average Assumptions Used to Estimate Fair Value of Awards (Details) (USD $)	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
EMC Information Infrastructure Stock Options	'	'	'
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]	'	'	'
Dividend yield	'	0.00%	0.00%
Expected volatility	'	34.30%	33.30%
Risk-free interest rate	'	0.80%	1.60%
Expected term (in years)	'	'5 years 2 months 12 days	'4 years 10 months 24 days
Weighted-average fair value at grant date (in usd per share)	'	$8.56	$8
VMware Stock Options	'	'	'
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]	'	'	'
Dividend yield	0.00%	0.00%	0.00%
Expected volatility	38.50%	35.80%	37.70%
Risk-free interest rate	0.90%	0.30%	1.00%
Expected term (in years)	'3 years 7 months 0 days	'2 years 8 months 12 days	'3 years
Weighted-average fair value at grant date (in usd per share)	$29.47	$80.45	$88.40
EMC Employee Stock Purchase - 1989 Plan | Common Stock	'	'	'
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]	'	'	'
Dividend yield	'	0.00%	0.00%
VMware | VMware Employee Stock Purchase - 2007 Plan | VMware Class A common stock	'	'	'
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]	'	'	'
Dividend yield	0.00%	0.00%	0.00%
Expected volatility	32.90%	37.80%	34.90%
Risk-free interest rate	0.10%	0.10%	0.20%
Expected term (in years)	'0 years 6 months 0 days	'6 months	'6 months
Weighted-average fair value at grant date (in usd per share)	$20.45	$23.36	$23.69

StockBased_Compensation_Additi

Stock-Based Compensation - Additional Information (Details) (USD $)

1 Months Ended

12 Months Ended

36 Months Ended

12 Months Ended

12 Months Ended

1 Months Ended

12 Months Ended

12 Months Ended

12 Months Ended

12 Months Ended

12 Months Ended

In Millions, except Share data, unless otherwise specified

31-May-07

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2011

Dec. 31, 2015

Dec. 31, 2013

Dec. 31, 2013

Dec. 31, 2013

Dec. 31, 2013

31-May-09

Dec. 31, 2013

Dec. 31, 2013

Dec. 31, 2013

Dec. 31, 2013

31-May-13

Dec. 31, 2013

Dec. 31, 2013

Dec. 31, 2013

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2011

Dec. 31, 2010

Dec. 31, 2013

Dec. 31, 2013

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2011

Dec. 31, 2013

Dec. 31, 2013

Dec. 31, 2013

Dec. 31, 2013

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2011

Dec. 31, 2010

Dec. 31, 2013

Dec. 31, 2013

Dec. 31, 2013

Dec. 31, 2013

Dec. 31, 2013

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2011

Plan

Plan

Maximum

Common Stock

EMC Employee Stock Purchase - 1989 Plan

EMC Employee Stock Purchase - 1989 Plan

VMware 2007 Equity and Incentive Plan

VMware 2007 Equity and Incentive Plan

VMware Stock Repurchase Plan

VMware Employee Stock Purchase Plan - 2007 Plan

VMware Employee Stock Purchase Plan - 2007 Plan

VMware Employee Stock Purchase Plan - 2007 Plan

Vesting Upon Fulfilling Service Conditions

Vesting Accelerated Upon Achieving Performance Conditions

Vesting Upon Achieving Certain Performance Conditions

VMware Restricted Stock

VMware Restricted Stock

VMware Restricted Stock

VMware Restricted Stock

VMware Restricted Stock

VMware Restricted Stock

VMware Stock Options

VMware Stock Options

VMware Stock Options

VMware Stock Options

VMware Stock Options

VMware Stock Options

VMware Stock Options

EMC Information Infrastructure Restricted Stock and Restricted Stock Units

EMC Information Infrastructure Restricted Stock and Restricted Stock Units

EMC Information Infrastructure Restricted Stock and Restricted Stock Units

EMC Information Infrastructure Restricted Stock and Restricted Stock Units

EMC Information Infrastructure Restricted Stock and Restricted Stock Units

EMC Information Infrastructure Restricted Stock and Restricted Stock Units

EMC Information Infrastructure Restricted Stock and Restricted Stock Units

EMC Information Infrastructure Restricted Stock and Restricted Stock Units

EMC Information Infrastructure Restricted Stock and Restricted Stock Units

EMC Information Infrastructure Stock Options

EMC Information Infrastructure Stock Options

EMC Information Infrastructure Stock Options

Common Stock

VMware Class A common stock

VMware Class A common stock

VMware Class A common stock

VMware 2007 Equity and Incentive Plan

VMware 2007 Equity and Incentive Plan

VMware 2007 Equity and Incentive Plan

VMware 2007 Equity and Incentive Plan

VMware 2007 Equity and Incentive Plan

VMware

Minimum

Pro Rata Vesting

Pro Rata Vesting

Cliff Vesting

Cliff Vesting

Minimum

Maximum

Minimum

Maximum

VMware 2007 Equity and Incentive Plan

Minimum

Maximum

Minimum

Maximum

VMware Class A common stock

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

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Other Employee Related Liabilities, Current

'

'

'

'

'

'

'

$93

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Exercise price for a stock option, minimum percentage of fair market value

'

100.00%

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Period from date of grant that options become exercisable

'

'

'

'

'

'5 years

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Period from date of grant that options expire (no later than ten years after the date of grant)

'

'10 years

'

'

'

'10 years

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'6 years

'7 years

'

'

'

'

'

'

'

'

'

'

'

'

'

Restricted stock vesting period

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'3 years

'4 years

'

'

'

'3 years

'

'

'

'2 years

'

'

'

'2 years

'3 years

'4 years

'3 years

'5 years

'

'

'

Number of shares authorized for grant

'

'

'

'

'

'

420,000,000

'

'

'

100,000,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Number of shares reserved for every one share issued in connection with awards

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

2

'

'

'

'

'

'

'

'

'

'

'

Number of other stock option plans, in addition to 2003 Plan

'

4

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Number of plans consolidated into the 2003 Plan

4

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Common stock, shares reserved for future issuance

'

982,000,000

'

'

'

'

'

183,000,000

'

'

'

'

'

'

8,000,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Number of plans

'

5

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Number of shares available for grant

'

'

'

'

'

'

78,000,000

'

'

'

11,000,000

'

7,000,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Purchase price of common stock, as a percent of fair market value

'

'

'

'

'

'

'

'

85.00%

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

25.00%

'

'

100.00%

'

'

'

'

'

'

'

'

'

'

'

'

Weighted average remaining contractual term

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'3 years 6 months 0 days

'

'

Options, exercisable, aggregate intrinsic value

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

209

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

533

'

'

Options, exercisable

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

4,000,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

50,000,000

'

'

Options, vested and expected to vest

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

6,000,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

57,000,000

'

'

Options, vested and expected to vest, weighted average remaining contractual term

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'3 years 2 months 12 days

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'3 years 11 months 0 days

'

'

Options, vested and expected to vest, aggregate intrinsic value

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

261

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

604

'

'

Closing stock price

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

$89.71

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

$25.15

'

'

Options, exercised, aggregate intrinsic value

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

256

443

648

'

'

'

'

'

'

'

'

'

'

'

'

'

240

518

619

Cash proceeds from the exercise of stock options

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

260

407

532

Income tax benefits realized from the exercise of stock options

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

45

97

127

Vested, intrinsic value

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

404

421

371

'

'

'

'

'

'

'

'

'

Outstanding and unvested (in shares)

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

13,000,000

12,000,000

10,000,000

10,000,000

'

'

'

'

'

'

'

'

'

48,000,000

47,000,000

46,000,000

44,000,000

'

'

'

'

'

'

'

'

Outstanding and unvested, intrinsic value

'

$1,203,000,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

$1,153,000,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Expected to vest (in shares)

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

43,000,000

9,000,000

5,000,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Increase in number of shares available for issuance

'

'

'

'

'

'

'

'

'

20,000,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Number of shares assumed in business acquisitions

'

'

'

'

'

'

'

'

'

'

2,000,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Stock repurchase plan, amount remaining for repurchase

'

'

'

'

6,000

'

'

'

'

'

'

660

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Purchase price of stock, percent of market value on grant date

'

'

'

'

'

'

'

'

'

'

'

'

'

85.00%

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Purchase price of stock, percent of market value on exercise date

'

'

'

'

'

'

'

'

'

'

'

'

'

85.00%

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

ESPP withholding payable

'

'

'

'

'

'

'

'

'

'

'

'

'

36

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Stock options exercisable, weighted-average remaining contractual term

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'1 year 9 months 24 days

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

ESPP, stock-based compensation expense

'

54

52

44

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Unrecognized compensation expense

'

$1,379

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Unrecognized compensation expense, weighted-average remaining period

'

'1 year 6 months

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Restructuring_and_AcquisitionR2

Restructuring and Acquisition-Related Charges - Activity For Restructuring Program (Detail) (USD $)

12 Months Ended

1 Months Ended

In Millions, unless otherwise specified

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2011

Dec. 31, 2012

Dec. 31, 2011

Dec. 31, 2012

Dec. 31, 2011

Dec. 31, 2013

Dec. 31, 2013

Dec. 31, 2013

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2013

Dec. 31, 2013

Dec. 31, 2013

Dec. 31, 2013

Dec. 31, 2013

Dec. 31, 2013

Jan. 31, 2014

Jan. 31, 2014

Workforce reductions

Workforce reductions

Consolidation of excess facilities and other contractual obligations

Consolidation of excess facilities and other contractual obligations

Restructuring 2013 Programs

Restructuring 2013 Programs

Restructuring 2013 Programs

Restructuring other programs

Restructuring other programs

Restructuring other programs

Restructuring other programs

VMware

VMware

VMware

VMware

Subsequent Event

Subsequent Event

Workforce reductions

Consolidation of excess facilities and other contractual obligations

Workforce reductions

Consolidation of excess facilities and other contractual obligations

Restructuring 2013 Programs

Restructuring 2013 Programs

Restructuring 2013 Programs

Minimum

Maximum

Workforce reductions

Consolidation of excess facilities and other contractual obligations

Restructuring Cost and Reserve [Line Items]

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Restructuring and Related Cost, Expected Cost

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

$100

$120

Restructuring Reserve [Roll Forward]

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Beginning Balance

91

80

82

50

54

30

28

0

0

0

91

'

63

28

'

0

0

0

'

'

Charges/Adjustments to the Provision

139

101

86

80

60

21

26

137

130

7

2

-8

9

11

54

54

54

0

'

'

Utilization

'

-90

-88

-67

-64

-23

-24

-88

-82

-6

-52

'

-36

-16

'

-54

-54

0

'

'

Ending Balance

'

91

80

63

50

28

30

49

48

1

41

91

18

23

'

0

0

0

'

'

Restructuring and Related Cost, Expected Cost, to be Settled with Cash

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

$95

$114

Restructuring_and_AcquisitionR3

Restructuring and Acquisition-Related Charges - Additional information (Detail) (USD $)

12 Months Ended

36 Months Ended

12 Months Ended

12 Months Ended

In Millions, unless otherwise specified

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2011

Dec. 31, 2014

Dec. 31, 2015

Dec. 31, 2011

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2013

Sep. 30, 2013

Dec. 31, 2013

2013

2014 and beyond

Restructuring 2011 programs

Restructuring 2013 Programs

Restructuring 2012 Programs

Restructuring other programs

Restructuring other programs

VMware

VMware

VMware

Position

Position

Restructuring 2013 Programs

Restructuring Cost and Reserve [Line Items]

'

'

'

'

'

'

'

'

'

'

'

'

'

Assets Held-for-sale, Current

'

'

'

'

'

'

'

'

'

'

'

$12

'

Restructuring and acquisition-related charges

224

110

97

'

'

'

'

'

'

'

'

'

'

Restructuring charges

139

101

86

'

'

63

137

109

2

-8

54

'

54

Acquisition-related charges

8

9

11

'

'

'

'

'

'

'

5

'

'

Asset Impairment Charges

'

'

'

'

'

'

'

'

'

'

18

'

'

Number of positions eliminated

'

'

'

'

'

787

1,917

1,163

'

'

'

'

710

Lease termination costs for facilities

18

21

26

'

'

'

'

'

'

'

'

'

'

Remaining cash portion owed for restructuring programs

'

'

'

9

5

'

'

'

'

'

'

'

'

Liabilities of Disposal Group, Including Discontinued Operation, Current

'

'

'

'

'

'

'

'

'

'

$44

'

'

Related_Party_Transactions_Det

Related Party Transactions (Details) (USD $)	12 Months Ended
In Millions, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2011	Dec. 31, 2010
Related Party Transactions [Abstract]	'	'	'
Related party lease payments	$5	$5	$5
Duration of related party lease - renewed in 2003	'10 years	'	'

Segment_Information_Segment_In

Segment Information - Segment Information (Detail) (USD $)	3 Months Ended								12 Months Ended
In Millions, unless otherwise specified	Dec. 31, 2013	Sep. 30, 2013	Jun. 30, 2013	Mar. 31, 2013	Dec. 31, 2012	Sep. 30, 2012	Jun. 30, 2012	Mar. 31, 2012	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Segment Reporting Information [Line Items]	'	'	'	'	'	'	'	'	'	'	'
Product sales	'	'	'	'	'	'	'	'	$13,690	$13,061	$12,591
Services	'	'	'	'	'	'	'	'	9,532	8,653	7,417
Gross profit	4,224	3,442	3,509	3,298	3,890	3,288	3,347	3,113	14,473	13,638	12,169
Gross profit percentage	'	'	'	'	'	'	'	'	62.30%	62.80%	60.80%
Research and development	'	'	'	'	'	'	'	'	2,761	2,560	2,151
Selling, general and administrative	'	'	'	'	'	'	'	'	7,338	7,004	6,479
Restructuring and acquisition-related charges	'	'	'	'	'	'	'	'	224	110	97
Total costs and expenses	'	'	'	'	'	'	'	'	10,323	9,674	8,727
Operating income (loss)	'	'	'	'	'	'	'	'	4,150	3,964	3,442
Other income (expense), net	'	'	'	'	'	'	'	'	-285	-160	-193
Income tax provision	'	'	'	'	'	'	'	'	772	918	640
Revenues	6,682	5,539	5,614	5,387	6,030	5,278	5,311	5,094	23,222	21,714	20,008
Information Storage	'	'	'	'	'	'	'	'	'	'	'
Segment Reporting Information [Line Items]	'	'	'	'	'	'	'	'	'	'	'
Product sales	'	'	'	'	'	'	'	'	10,694	10,283	10,042
Services	'	'	'	'	'	'	'	'	5,438	5,157	4,642
Gross profit	'	'	'	'	'	'	'	'	9,082	8,860	8,291
Gross profit percentage	'	'	'	'	'	'	'	'	56.30%	57.40%	56.50%
Revenues	'	'	'	'	'	'	'	'	16,132	15,440	14,684
Information Intelligence Group	'	'	'	'	'	'	'	'	'	'	'
Segment Reporting Information [Line Items]	'	'	'	'	'	'	'	'	'	'	'
Product sales	'	'	'	'	'	'	'	'	180	200	209
Services	'	'	'	'	'	'	'	'	467	440	452
Gross profit	'	'	'	'	'	'	'	'	419	432	425
Gross profit percentage	'	'	'	'	'	'	'	'	64.80%	67.50%	64.20%
Revenues	'	'	'	'	'	'	'	'	647	640	661
RSA Information Security	'	'	'	'	'	'	'	'	'	'	'
Segment Reporting Information [Line Items]	'	'	'	'	'	'	'	'	'	'	'
Product sales	'	'	'	'	'	'	'	'	453	414	441
Services	'	'	'	'	'	'	'	'	534	475	387
Gross profit	'	'	'	'	'	'	'	'	655	604	470
Gross profit percentage	'	'	'	'	'	'	'	'	66.40%	68.00%	56.80%
Revenues	'	'	'	'	'	'	'	'	987	889	828
EMC Information Infrastructure	'	'	'	'	'	'	'	'	'	'	'
Segment Reporting Information [Line Items]	'	'	'	'	'	'	'	'	'	'	'
Product sales	'	'	'	'	'	'	'	'	11,327	10,897	10,692
Services	'	'	'	'	'	'	'	'	6,439	6,072	5,481
Gross profit	'	'	'	'	'	'	'	'	10,156	9,896	9,186
Gross profit percentage	'	'	'	'	'	'	'	'	57.20%	58.30%	56.80%
Research and development	'	'	'	'	'	'	'	'	1,453	1,402	1,216
Selling, general and administrative	'	'	'	'	'	'	'	'	4,567	4,484	4,348
Restructuring and acquisition-related charges	'	'	'	'	'	'	'	'	0	0	0
Total costs and expenses	'	'	'	'	'	'	'	'	6,020	5,886	5,564
Operating income (loss)	'	'	'	'	'	'	'	'	4,136	4,010	3,622
Revenues	'	'	'	'	'	'	'	'	17,766	16,969	16,173
Pivotal	'	'	'	'	'	'	'	'	'	'	'
Segment Reporting Information [Line Items]	'	'	'	'	'	'	'	'	'	'	'
Product sales	'	'	'	'	'	'	'	'	110	106	76
Services	'	'	'	'	'	'	'	'	199	164	54
Gross profit	'	'	'	'	'	'	'	'	118	153	76
Gross profit percentage	'	'	'	'	'	'	'	'	38.00%	56.70%	58.60%
Research and development	'	'	'	'	'	'	'	'	117	124	70
Selling, general and administrative	'	'	'	'	'	'	'	'	165	155	120
Restructuring and acquisition-related charges	'	'	'	'	'	'	'	'	0	0	0
Total costs and expenses	'	'	'	'	'	'	'	'	282	279	190
Operating income (loss)	'	'	'	'	'	'	'	'	-164	-126	-114
Revenues	'	'	'	'	'	'	'	'	309	270	130
EMC Information Infrastructure plus Pivotal	'	'	'	'	'	'	'	'	'	'	'
Segment Reporting Information [Line Items]	'	'	'	'	'	'	'	'	'	'	'
Product sales	'	'	'	'	'	'	'	'	11,437	11,003	10,768
Services	'	'	'	'	'	'	'	'	6,638	6,236	5,535
Gross profit	'	'	'	'	'	'	'	'	10,274	10,049	9,262
Gross profit percentage	'	'	'	'	'	'	'	'	56.80%	58.30%	56.80%
Research and development	'	'	'	'	'	'	'	'	1,570	1,526	1,286
Selling, general and administrative	'	'	'	'	'	'	'	'	4,732	4,639	4,468
Restructuring and acquisition-related charges	'	'	'	'	'	'	'	'	0	0	0
Total costs and expenses	'	'	'	'	'	'	'	'	6,302	6,165	5,754
Operating income (loss)	'	'	'	'	'	'	'	'	3,972	3,884	3,508
Other income (expense), net	'	'	'	'	'	'	'	'	-336	-177	-252
Income tax provision	'	'	'	'	'	'	'	'	911	968	805
Revenues	'	'	'	'	'	'	'	'	18,075	17,239	16,303
VMware Virtual Infrastructure Within EMC Corp	'	'	'	'	'	'	'	'	'	'	'
Segment Reporting Information [Line Items]	'	'	'	'	'	'	'	'	'	'	'
Product sales	'	'	'	'	'	'	'	'	2,253	2,058	1,823
Services	'	'	'	'	'	'	'	'	2,894	2,417	1,882
Gross profit	'	'	'	'	'	'	'	'	4,589	3,976	3,189
Gross profit percentage	'	'	'	'	'	'	'	'	89.20%	88.90%	86.10%
Research and development	'	'	'	'	'	'	'	'	826	700	550
Selling, general and administrative	'	'	'	'	'	'	'	'	2,003	1,739	1,430
Restructuring and acquisition-related charges	'	'	'	'	'	'	'	'	0	0	0
Total costs and expenses	'	'	'	'	'	'	'	'	2,829	2,439	1,980
Operating income (loss)	'	'	'	'	'	'	'	'	1,760	1,537	1,209
Other income (expense), net	'	'	'	'	'	'	'	'	22	27	7
Income tax provision	'	'	'	'	'	'	'	'	317	271	134
Revenues	'	'	'	'	'	'	'	'	5,147	4,475	3,705
Corp Reconciling Items	'	'	'	'	'	'	'	'	'	'	'
Segment Reporting Information [Line Items]	'	'	'	'	'	'	'	'	'	'	'
Product sales	'	'	'	'	'	'	'	'	0	0	0
Services	'	'	'	'	'	'	'	'	0	0	0
Gross profit	'	'	'	'	'	'	'	'	-390	-387	-282
Gross profit percentage	'	'	'	'	'	'	'	'	0.00%	0.00%	0.00%
Research and development	'	'	'	'	'	'	'	'	365	334	315
Selling, general and administrative	'	'	'	'	'	'	'	'	603	626	581
Restructuring and acquisition-related charges	'	'	'	'	'	'	'	'	224	110	97
Total costs and expenses	'	'	'	'	'	'	'	'	1,192	1,070	993
Operating income (loss)	'	'	'	'	'	'	'	'	-1,582	-1,457	-1,275
Other income (expense), net	'	'	'	'	'	'	'	'	29	-10	52
Income tax provision	'	'	'	'	'	'	'	'	-456	-321	-299
Revenues	'	'	'	'	'	'	'	'	0	0	0
United States	'	'	'	'	'	'	'	'	'	'	'
Segment Reporting Information [Line Items]	'	'	'	'	'	'	'	'	'	'	'
Long-lived assets, excluding financial instruments, deferred tax assets, goodwill and intangible assets	4,433	'	'	'	3,994	'	'	'	4,433	3,994	'
Revenues	'	'	'	'	'	'	'	'	12,230	11,510	10,550
International	'	'	'	'	'	'	'	'	'	'	'
Segment Reporting Information [Line Items]	'	'	'	'	'	'	'	'	'	'	'
Long-lived assets, excluding financial instruments, deferred tax assets, goodwill and intangible assets	$877	'	'	'	$698	'	'	'	$877	$698	'

Segment_Information_Revenues_B

Segment Information - Revenues By Geographic Area (Detail) (USD $)

3 Months Ended

12 Months Ended

In Millions, unless otherwise specified

Dec. 31, 2013

Sep. 30, 2013

Jun. 30, 2013

Mar. 31, 2013

Dec. 31, 2012

Sep. 30, 2012

Jun. 30, 2012

Mar. 31, 2012

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2011

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2011

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2011

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2011

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2011

Dec. 31, 2013

Dec. 31, 2011

Dec. 31, 2010

United States

United States

United States

Europe, Middle East and Africa

Europe, Middle East and Africa

Europe, Middle East and Africa

Asia Pacific and Japan

Asia Pacific and Japan

Asia Pacific and Japan

Latin America, Mexico and Canada

Latin America, Mexico and Canada

Latin America, Mexico and Canada

Geographic Concentration Risk

Geographic Concentration Risk

Geographic Concentration Risk

Revenues

Revenues

Revenues

Country

Country

Country

Segment Reporting Information [Line Items]

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Concentration Risk, Geographic, Number of Countries Other Than United States

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

0

0

0

Total consolidated revenues

$6,682

$5,539

$5,614

$5,387

$6,030

$5,278

$5,311

$5,094

$23,222

$21,714

$20,008

$12,230

$11,510

$10,550

$6,355

$5,908

$5,668

$3,193

$3,017

$2,639

$1,444

$1,279

$1,151

'

'

'

Segment_Information_Additional

Segment Information - Additional Information (Detail) (USD $)

3 Months Ended

12 Months Ended

12 Months Ended

3 Months Ended

12 Months Ended

In Millions, unless otherwise specified

Dec. 31, 2013

Sep. 30, 2013

Jun. 30, 2013

Mar. 31, 2013

Dec. 31, 2012

Sep. 30, 2012

Jun. 30, 2012

Mar. 31, 2012

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2011

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2011

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2013

Dec. 31, 2011

Dec. 31, 2010

Dec. 31, 2013

Jun. 30, 2013

8-May-13

Dec. 31, 2013

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2011

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2011

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2011

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2011

United States

United States

United States

International

International

Revenues

Revenues

Revenues

EMC Information Infrastructure

Pivotal

Pivotal

EMC

EMC Information Infrastructure plus Pivotal

EMC Information Infrastructure plus Pivotal

EMC Information Infrastructure plus Pivotal

VMware Virtual Infrastructure Within EMC Corp

VMware Virtual Infrastructure Within EMC Corp

VMware Virtual Infrastructure Within EMC Corp

Corp Reconciling Items

Corp Reconciling Items

Corp Reconciling Items

Pivotal

Pivotal

Pivotal

Geographic risk

Geographic risk

Geographic risk

Limited Partner

Limited Partner

Pivotal

Country

Country

Country

Segment Reporting Information [Line Items]

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Number of operating segments

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

3

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Number of countries, other than United States, that accounted for 10% or more of total revenue

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

0

0

0

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Long-lived assets, excluding financial instruments, deferred tax assets, goodwill and intangible assets

'

'

'

'

'

'

'

'

'

'

'

$4,433

$3,994

'

$877

$698

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Joint Venture, Ownership Interest Percentage

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

10.00%

84.00%

'

'

'

'

'

'

'

'

'

'

'

'

Payments to Acquire Interest in Joint Venture

'

'

'

'

'

'

'

'

411

228

383

'

'

'

'

'

'

'

'

'

105

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Revenues

6,682

5,539

5,614

5,387

6,030

5,278

5,311

5,094

23,222

21,714

20,008

12,230

11,510

10,550

'

'

'

'

'

'

'

'

'

18,075

17,239

16,303

5,147

4,475

3,705

0

0

0

309

270

130

Gross profit

4,224

3,442

3,509

3,298

3,890

3,288

3,347

3,113

14,473

13,638

12,169

'

'

'

'

'

'

'

'

'

'

'

'

10,274

10,049

9,262

4,589

3,976

3,189

-390

-387

-282

118

153

76

Gross profit percentage

'

'

'

'

'

'

'

'

62.30%

62.80%

60.80%

'

'

'

'

'

'

'

'

'

'

'

'

56.80%

58.30%

56.80%

89.20%

88.90%

86.10%

0.00%

0.00%

0.00%

38.00%

56.70%

58.60%

Research and development

'

'

'

'

'

'

'

'

2,761

2,560

2,151

'

'

'

'

'

'

'

'

'

'

'

'

1,570

1,526

1,286

826

700

550

365

334

315

117

124

70

Selling, general and administrative

'

'

'

'

'

'

'

'

7,338

7,004

6,479

'

'

'

'

'

'

'

'

'

'

'

'

4,732

4,639

4,468

2,003

1,739

1,430

603

626

581

165

155

120

Restructuring and acquisition-related charges

'

'

'

'

'

'

'

'

224

110

97

'

'

'

'

'

'

'

'

'

'

'

'

0

0

0

0

0

0

224

110

97

0

0

0

Operating Expenses

'

'

'

'

'

'

'

'

10,323

9,674

8,727

'

'

'

'

'

'

'

'

'

'

'

'

6,302

6,165

5,754

2,829

2,439

1,980

1,192

1,070

993

282

279

190

Operating Income (Loss)

'

'

'

'

'

'

'

'

4,150

3,964

3,442

'

'

'

'

'

'

'

'

'

'

'

'

3,972

3,884

3,508

1,760

1,537

1,209

-1,582

-1,457

-1,275

-164

-126

-114

Nonoperating Income (Expense)

'

'

'

'

'

'

'

'

-285

-160

-193

'

'

'

'

'

'

'

'

'

'

'

'

-336

-177

-252

22

27

7

29

-10

52

'

'

'

Income tax provision

'

'

'

'

'

'

'

'

772

918

640

'

'

'

'

'

'

'

'

'

'

'

'

911

968

805

317

271

134

-456

-321

-299

'

'

'

Net income

'

'

'

'

'

'

'

'

3,093

2,886

2,609

'

'

'

'

'

'

'

'

'

'

'

'

2,725

2,739

2,451

1,465

1,293

1,082

-1,097

-1,146

-924

'

'

'

Less: Net income attributable to the non-controlling interest in VMware, Inc.

'

'

'

'

'

'

'

'

-204

-153

-148

'

'

'

'

'

'

'

'

'

'

'

'

0

0

0

-297

-255

-209

93

102

61

'

'

'

Net income attributable to EMC Corporation

$1,022

$586

$701

$580

$870

$626

$650

$587

$2,889

$2,733

$2,461

'

'

'

'

'

'

'

'

'

'

'

'

$2,725

$2,739

$2,451

$1,168

$1,038

$873

($1,004)

($1,044)

($863)

'

'

'

Selected_Quarterly_Financial_D2

Selected Quarterly Financial Data (Unaudited) - Quarterly Financial Data (Details) (USD $)	3 Months Ended								12 Months Ended
In Millions, except Per Share data, unless otherwise specified	Dec. 31, 2013	Sep. 30, 2013	Jun. 30, 2013	Mar. 31, 2013	Dec. 31, 2012	Sep. 30, 2012	Jun. 30, 2012	Mar. 31, 2012	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Quarterly Financial Information Disclosure [Abstract]	'	'	'	'	'	'	'	'	'	'	'
Total consolidated revenues	$6,682	$5,539	$5,614	$5,387	$6,030	$5,278	$5,311	$5,094	$23,222	$21,714	$20,008
Gross profit	4,224	3,442	3,509	3,298	3,890	3,288	3,347	3,113	14,473	13,638	12,169
Net income attributable to EMC Corporation	$1,022	$586	$701	$580	$870	$626	$650	$587	$2,889	$2,733	$2,461
Net income per weighted average share, diluted: common shareholders	$0.48	$0.27	$0.32	$0.26	$0.39	$0.28	$0.29	$0.27	$1.33	$1.23	$1.10

Selected_Quarterly_Financial_D3

Selected Quarterly Financial Data (Unaudited) - Additional Information (Details) (USD $)	3 Months Ended								12 Months Ended
In Millions, except Per Share data, unless otherwise specified	Dec. 31, 2013	Sep. 30, 2013	Jun. 30, 2013	Mar. 31, 2013	Dec. 31, 2012	Sep. 30, 2012	Jun. 30, 2012	Mar. 31, 2012	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Effect of Fourth Quarter Events [Line Items]	'	'	'	'	'	'	'	'	'	'	'
Research and Development tax credit, amount	'	'	'	$60	'	'	'	'	'	'	'
Research and Development tax credit, per share impact	'	'	'	$0.03	'	'	'	'	'	'	'
Gain related to release of excess reserve for expansion of customer remediation programs resulting from cyber attack, net of tax	'	'	'	'	'	'	18	'	'	'	'
Gain related to release of excess reserve for expansion of customer remediation programs resulting from cyber attack, net of tax, per diluted share (in usd per share)	'	'	'	'	'	'	$0.01	'	'	'	'
Loss on interest rate swaps	'	'	'	'	'	'	24	'	'	'	'
Loss on interest rate swaps, per diluted share	'	'	'	'	'	'	$0.01	'	'	'	'
Gain on strategic investment, net of tax	'	'	'	'	'	'	32	'	'	'	'
Gain on strategic investment, net of tax, per diluted share	'	'	'	'	'	'	$0.01	'	'	'	'
Gain on disposition of business	'	11	10	'	'	'	'	'	'	'	'
Net gain on disposition of business, per share impact	'	$0.01	$0.01	'	'	'	'	'	'	'	'
Special tax charges related to tax-related reorganizations, amount per diluted share	($0.48)	($0.27)	($0.32)	($0.26)	($0.39)	($0.28)	($0.29)	($0.27)	($1.33)	($1.23)	($1.10)
Special tax charges related to tax-related reorganizations, amount	'	'	'	'	'	'	'	'	772	918	640
Tax-Related Reorganizations	'	'	'	'	'	'	'	'	'	'	'
Effect of Fourth Quarter Events [Line Items]	'	'	'	'	'	'	'	'	'	'	'
Special tax charges related to tax-related reorganizations, amount per diluted share	$0	$0.01	'	'	$0.01	'	'	'	'	'	'
Special tax charges related to tax-related reorganizations, amount	$4	$23	'	'	$11	'	'	'	'	'	'

Subsequent_Events_Details

Subsequent Events (Details) (USD $)	1 Months Ended
In Millions, unless otherwise specified	Jan. 31, 2014
Subsequent Event | Minimum	'
Subsequent Event [Line Items]	'
Expected cost of restructuring	$100
Restructuring and Related Cost, Expected Cost, to be Settled with Cash	95
Subsequent Event | Maximum	'
Subsequent Event [Line Items]	'
Expected cost of restructuring	120
Restructuring and Related Cost, Expected Cost, to be Settled with Cash	114
All 2014 Acquisitions [Domain] | VMware	'
Subsequent Event [Line Items]	'
Payments to Acquire Businesses, Gross	1,181
Payments to Acquire Business, Other	$364

Schedule_II_Valuation_and_Qual1

Schedule II - Valuation and Qualifying Accounts (Details) (USD $)	12 Months Ended
In Millions, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Movement in Valuation Allowances and Reserves [Roll Forward]	'	'	'
Balance at End of Period	'	$4	'
Allowance for Bad Debts	'	'	'
Movement in Valuation Allowances and Reserves [Roll Forward]	'	'	'
Balance at Beginning of Period	72	65	61
Charged to Expense / Reduction in Revenue	-1	39	20
Deductions	-6	-32	-16
Balance at End of Period	65	72	65
Allowance for Sales Returns	'	'	'
Movement in Valuation Allowances and Reserves [Roll Forward]	'	'	'
Balance at Beginning of Period	86	133	158
Charged to Expense / Reduction in Revenue	55	17	19
Deductions	-65	-64	-44
Balance at End of Period	76	86	133
Tax Valuation Allowance	'	'	'
Movement in Valuation Allowances and Reserves [Roll Forward]	'	'	'
Balance at Beginning of Period	183	151	126
Charged to Expense / Reduction in Revenue	32	33	25
Deductions	-4	-1	0
Balance at End of Period	$211	$183	$151