Related Party Transaction, Due from (to) Related Party [Abstract] Related Party Transactions Related Party Transactions Disclosure [Text Block] Segment Information [Abstract] Segment Information [Abstract] Schedule of Segment Reporting Information, by Segment [Table] Schedule of Segment Reporting Information, by Segment [Table] Concentration Risk by Benchmark [Axis] Concentration Risk by Benchmark [Axis] Concentration Risk Benchmark [Domain] Concentration Risk Benchmark [Domain] Sales [Member] Sales [Member] Sales Revenue Goods and Services, Net [Member] Sales Revenue Goods and Services, Net [Member] Sales Revenue Goods and Services, Net [Member] Concentration Risk by Type [Axis] Concentration Risk by Type [Axis] Concentration Risk Type [Domain] Concentration Risk Type [Domain] Customer Concentration Risk [Member] Customer Concentration Risk [Member] Statement, Geographical [Axis] Statement, Geographical [Axis] Segment, Geographical [Domain] Segment, Geographical [Domain] United States [Member] UNITED STATES International [Member] Foreign Country [Member] Statement [Line Items] Statement [Line Items] Number Of Reportable Segments Number Of Reportable Segments Number of reportable segments. Revenues Revenues Number of countries accounted for material revenues Number of Countries Accounted for Material Revenues Number of Countries Accounted for Material Revenues Statement of Financial Position [Abstract] Statement [Table] Statement [Table] Statement, Scenario [Axis] Statement, Scenario [Axis] Scenario, Unspecified [Domain] Scenario, Unspecified [Domain] Class of Stock [Axis] Class of Stock [Axis] Class of Stock [Domain] Class of Stock [Domain] Class A Common Stock [Member] Common Class A [Member] Class B Common Stock [Member] Common Class B [Member] Allowance for Doubtful Accounts Receivable Allowance for Doubtful Accounts Receivable Common Stock, Par Value (Shares) Common Stock, Par or Stated Value Per Share Common Stock, Shares Authorized (Shares) Common Stock, Shares Authorized Common Stock, Shares Issued (Shares) Common Stock, Shares, Issued Common Stock, Shares Outstanding (Shares) Common Stock, Shares, Outstanding Schedule of Related Party Transactions, by Related Party [Table] Schedule of Related Party Transactions, by Related Party [Table] Business Acquisition [Axis] Business Acquisition [Axis] Business Acquisition, Acquiree [Domain] Business Acquisition, Acquiree [Domain] Mozy [Member] Mozy [Member] Mozy [Member] Ionix [Member] Ionix [Member] Ionix [Member] Products and Services [Axis] Products and Services [Axis] Products and Services [Domain] Products and Services [Domain] Cost Reimbursement from Related Party Pursuant to Support Agreement [Member] Cost Reimbursement from Related Party Pursuant to Support Agreement [Member] Cost Reimbursement from Related Party Pursuant to Support Agreement [Member] Product Sold Pursuant To Reseller Arrangement [Member] Product Sold Pursuant To Reseller Arrangement Member Product Sold Pursuant to Reseller Arrangement [Member] Professional Service [Member] Professional Service [Member] Professional Service [Member] Server And Desktop Products And Services [Member] Server And Desktop Product And Service Member Server and Desktop Product and Service [Member] Storage Systems And Software [Member] Storage System And Software [Member] Storage System and Software [Member] Support Services [Member] Support Services [Member] Support Services [Member] Related Party Transactions, by Related Party [Axis] Related Party Transactions, by Related Party [Axis] Related Party [Domain] Related Party [Domain] Affiliated Entity [Member] Affiliated Entity [Member] EMC [Member] Majority Shareholder [Member] Cisco [Member] Cisco [Member] Cisco [Member] Related Party Transaction, Amounts of Transaction Related Party Transaction, Amounts of Transaction Markup on costs incurred to support Mozy Services Related Party Transaction, Markup on Costs Incurred to Support Services Related Party Transaction, Markup on Costs Incurred to Support Services Cash consideration for acquisition of software product technology Transfer of net assets under common control Transfer Of Net Assets Under Common Control Contingent obligations paid Business Acquisition Contingent Consideration Payment Business acquisition contingent consideration payment Revenue from related party transaction Related Party Transaction, Revenues from Transactions with Related Party Unearned revenue Deferred Revenue Cost of purchase Related Party Costs Related Party Transaction, Expenses from Transactions with Related Party Related Party Transaction, Expenses from Transactions with Related Party Receipt Of Income Tax From Related Party Receipt Of Income Tax From Related Party Receipt of income tax from related party. Payment of Income Tax to Related Party Payment of Income Tax to Related Party Payment of Income Tax to Related Party Interest expense with EMC, net Interest Expense, Debt Due from (to) EMC, Net, Current Related Party Transaction, Due from (to) Related Party, Current Due from EMC, Current Due from Related Parties, Current Due to EMC, Current Due to Related Parties, Current Related Party Transaction Other Than Tax Obligation Due To Or From Related Cash Settlement Period Related Party Transaction Other Than Tax Obligation Due To Or From Related Cash Settlement Period Related Party Transaction Other Than Tax Obligation Due To Or From Related Cash Settlement Period Schedule of Available-for-sale Securities, Major Types of Debt and Equity Securities [Axis] Schedule of Available-for-sale Securities, Major Types of Debt and Equity Securities [Axis] Major Types of Debt and Equity Securities [Domain] Major Types of Debt and Equity Securities [Domain] ASSETS Assets [Abstract] Current assets: Assets, Current [Abstract] Cash and cash equivalents Cash and Cash Equivalents, at Carrying Value Short-term investments Available-for-sale Securities Accounts receivable, net of allowance for doubtful accounts of $2,734 and $3,794 Accounts Receivable, Net, Current Deferred tax asset Deferred Tax Assets, Net, Current Other current assets Other Assets, Current Total current assets Assets, Current Property and equipment, net Property, Plant and Equipment, Net Capitalized software development costs, net and other Other Assets, Noncurrent Deferred tax asset Deferred Tax Assets, Net, Noncurrent Intangible assets, net Intangible Assets, Net (Excluding Goodwill) Goodwill Goodwill Total assets Assets LIABILITIES AND STOCKHOLDERS' EQUITY Liabilities and Equity [Abstract] Accounts payable Accounts Payable, Current Accrued expenses and other Accrued Liabilities, Current Unearned revenues Deferred Revenue, Current Total current liabilities Liabilities, Current Note payable to EMC Notes Payable, Related Parties, Noncurrent Unearned revenues Deferred Revenue, Noncurrent Deferred tax liability Deferred Tax Liabilities, Noncurrent Other liabilities Other Liabilities, Noncurrent Total liabilities Liabilities Commitments and contingencies (see Note L) Commitments and Contingencies Stockholders' equity: Stockholders' Equity Attributable to Parent [Abstract] Common stock, value Common Stock, Value, Issued Additional paid-in capital Additional Paid in Capital, Common Stock Accumulated other comprehensive income Accumulated Other Comprehensive Income (Loss), Net of Tax Retained earnings Retained Earnings (Accumulated Deficit) Total stockholders' equity Stockholders' Equity Attributable to Parent Total liabilities and stockholders' equity Liabilities and Equity Commitments and Contingencies Disclosure [Abstract] Lease Commitment by Location [Axis] Lease Commitment by Location [Axis] Lease Commitment by Location [Axis] Lease Commitment by Location [Domain] Lease Commitment by Location [Domain] Lease Commitment by Location [Domain] Washington Data Center [Member] Washington Data Center [Member] Washington Data Center [Member] Legal Entity [Axis] Legal Entity [Axis] Entity [Domain] Entity [Domain] Operating Leases, Rent Expense Operating Leases, Rent Expense Contractual Commitments Contractual Commitments Contractual Commitments Statement of Cash Flows [Abstract] Finite-Lived Intangible Assets by Major Class [Axis] Finite-Lived Intangible Assets by Major Class [Axis] Finite-Lived Intangible Assets, Major Class Name [Domain] Finite-Lived Intangible Assets, Major Class Name [Domain] Lease Agreements [Member] Lease Agreements [Member] Operating activities: Net Cash Provided by (Used in) Operating Activities [Abstract] Net income Net Income (Loss) Attributable to Parent Adjustments to reconcile net income to net cash provided by operating activities: Adjustments to Reconcile Net Income (Loss) to Cash Provided by (Used in) Operating Activities [Abstract] Depreciation and amortization Depreciation, Depletion and Amortization Stock-based compensation, excluding amounts capitalized Share-based Compensation Excess tax benefits from stock-based compensation Excess Tax Benefit from Share-based Compensation, Operating Activities Other Other Noncash Income (Expense) Changes in assets and liabilities, net of acquisitions: Increase (Decrease) in Operating Capital [Abstract] Accounts receivable Increase (Decrease) in Accounts Receivable Other assets Increase (Decrease) in Other Operating Assets Due to/from EMC, net Due To From Emc Net Due To From Emc Net Accounts payable Increase (Decrease) in Accounts Payable Accrued expenses Increase (Decrease) in Accrued Liabilities Income taxes receivable from EMC Increase (Decrease) in Income Taxes Receivable Income taxes payable Increase (Decrease) in Income Taxes Payable Deferred income taxes, net Increase (Decrease) in Deferred Income Taxes Unearned revenue Increase (Decrease) in Deferred Revenue Net cash provided by operating activities Net Cash Provided by (Used in) Operating Activities Investing activities: Net Cash Provided by (Used in) Investing Activities [Abstract] Additions to property and equipment Payments to Acquire Property, Plant, and Equipment Capitalized software development costs Payments to Acquire Software Purchases of available-for-sale securities Payments to Acquire Available-for-sale Securities Sales of available-for-sale securities Proceeds from Sale of Available-for-sale Securities Maturities of available-for-sale securities Proceeds from Maturities, Prepayments and Calls of Available-for-sale Securities Purchase of strategic investments Payments to Acquire Other Investments Sale of strategic investments Proceeds from Sale of Other Investments Business acquisitions, net of cash acquired Payments to Acquire Businesses, Net of Cash Acquired Transfer of net assets under common control Other investing Payments for (Proceeds from) Other Investing Activities Net cash used in investing activities Net Cash Provided by (Used in) Investing Activities Financing activities: Net Cash Provided by (Used in) Financing Activities [Abstract] Proceeds from issuance of common stock Proceeds from Issuance of Common Stock Repurchase of common stock Payments for Repurchase of Common Stock Excess tax benefits from stock-based compensation Excess Tax Benefit from Share-based Compensation, Financing Activities Shares repurchased for tax withholdings on vesting of restricted stock Payments Related to Tax Withholding for Share-based Compensation Net cash provided by (used in) financing activities Net Cash Provided by (Used in) Financing Activities Net increase in cash and cash equivalents Cash and Cash Equivalents, Period Increase (Decrease) Cash and cash equivalents at beginning of the period Cash and cash equivalents at end of the period Cash paid for interest Interest Paid Cash paid (refunded) for taxes Income Taxes Paid, Net Non-cash items: Cash Flow, Noncash Investing and Financing Activities Disclosure [Abstract] Changes in capital additions, accrued but not paid Capital Expenditures Incurred but Not yet Paid Change In Tax Withholdings On Vesting Of Restricted Stock, accrued but not paid Change In Tax Withholdings On Vesting Of Restricted Stock Change In Tax Withholdings On Vesting Of Restricted Stock Comprehensive Income [Abstract] Comprehensive Income [Abstract] Other comprehensive income: Other Comprehensive Income (Loss), Net of Tax [Abstract] Unrealized gains on available-for-sale securities, net of taxes of $1,430 and $10,614 Other Comprehensive Income (Loss), Unrealized Holding Gain (Loss) on Securities Arising During Period, Net of Tax Unrealized gains on effective foreign currency forward exchange contracts, net of taxes of $40 and $0 Other Comprehensive Income (Loss), Unrealized Gain (Loss) on Derivatives Arising During Period, Net of Tax Reclassification of (gains) losses on available-for-sale securities recognized during the period, net of taxes of $36, and $(5) Other Comprehensive Income (Loss), Reclassification Adjustment for Sale of Securities Included in Net Income, Net of Tax Total other comprehensive income Other Comprehensive Income (Loss), Net of Tax Total comprehensive income, net of taxes Comprehensive Income (Loss), Net of Tax, Attributable to Parent Fair Value Measurements And Derivative Instruments [Abstract] Fair Value Measurements and Derivative Instruments [Abstract] Fair Value Measurements Fair Value, Measurement Inputs, Disclosure [Table Text Block] Palo Alto Lease [Member] Palo Alto Lease Member Palo Alto Lease [Member] 2012 Operating Leases, Future Minimum Payments Due, Current 2013 Operating Leases, Future Minimum Payments, Due in Two Years 2014 Operating Leases, Future Minimum Payments, Due in Three Years 2015 Operating Leases, Future Minimum Payments, Due in Four Years 2016 Operating Leases, Future Minimum Payments, Due in Five Years Thereafter Operating Leases, Future Minimum Payments, Due Thereafter Total minimum lease payments Operating Leases, Future Minimum Payments Due Investments [Abstract] Schedule of Investments [Table] Schedule of Investments [Table] U.S. Government And Agency Obligations [Member] US Government Agencies Debt Securities [Member] Corporate Debt Securities [Member] Corporate Debt Securities [Member] Foreign Government Debt Securities [Member] Foreign Government Debt Securities [Member] Municipal Obligations [Member] Municipal Bonds [Member] Asset-Backed Securities [Member] Asset-backed Securities [Member] Mortgage-Backed Securities [Member] Mortgage-backed Securities, Issued by Private Enterprises [Member] Cost or Amortized Cost Available-for-sale Securities, Amortized Cost Basis Unrealized Gains Available-for-sale Securities, Gross Unrealized Gains Unrealized Losses Available-for-sale Securities, Gross Unrealized Losses Fixed income securities, Aggregate Fair Value Available-for-sale Securities, Debt Securities Fair Value Of Money Market Funds And Available-For-Sale Securities Included In Cash And Cash Equivalents Fair Value, Assets Measured on Recurring Basis [Table Text Block] Note Payable To EMC [Abstract] Note Payable to EMC [Abstract] Note Payable To EMC Debt Disclosure [Text Block] Number of countries accounted for ten percent or more of total assets Number of Countries Accounted for Ten Percentage or More of Total Assets Number of Countries Accounted for Ten Percentage or More of Total Assets Schedule of Revenues from External Customers and Long-Lived Assets [Table] Schedule of Revenues from External Customers and Long-Lived Assets [Table] Revenues from External Customers and Long-Lived Assets [Line Items] Revenues from External Customers and Long-Lived Assets [Line Items] Investing In Fixed Income Securities Available-for-sale Securities [Table Text Block] Unrealized Losses On Investments Gain (Loss) on Investments [Table Text Block] Contractual Maturities Of Investments Investments Classified by Contractual Maturity 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Deferred Revenue Disclosure [Abstract] Unearned Revenue, by Arrangement, Disclosure Deferred Revenue, by Arrangement, Disclosure [Table Text Block] Deferred Revenue Arrangement, by Type [Table] Deferred Revenue Arrangement, by Type [Table] Deferred Revenue Arrangement Type [Axis] Deferred Revenue Arrangement Type [Axis] Deferred Revenue Arrangement Type [Domain] Deferred Revenue Arrangement Type [Domain] Deferred Revenue Arrangement [Line Items] Deferred Revenue Arrangement [Line Items] Income Statement [Abstract] Schedule of Employee Service Share-based Compensation, Allocation of Recognized Period Costs, by Report Line [Axis] Schedule of Employee Service Share-based Compensation, Allocation of Recognized Period Costs, by Report Line [Axis] Employee Service Share-based Compensation, Allocation of Recognized Period Costs, Report Line [Domain] Employee Service Share-based Compensation, Allocation of Recognized Period Costs, Report Line [Domain] Cost Of License Revenues [Member] Cost Of 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Antidilutive Securities Excluded from Computation of Earnings Per Share, by Antidilutive Securities [Axis] Antidilutive Securities Excluded from Computation of Earnings Per Share, by Antidilutive Securities [Axis] Antidilutive Securities, Name [Domain] Antidilutive Securities, Name [Domain] Stock Options [Member] Stock Options [Member] Restricted Stock [Member] Restricted Stock [Member] Anti-dilutive shares excluded from computation of earnings per share Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount Investments Investments in Debt and Marketable Equity Securities (and Certain Trading Assets) Disclosure [Text Block] Statement of Comprehensive Income Parenthetical [Abstract] Statement of Comprehensive Income Parenthetical [Abstract] Tax effect on unrealized gains on available-for-sale securities Other Comprehensive Income (Loss), Unrealized Holding Gain (Loss) on Securities Arising During Period, Tax Tax effect on unrealized gains on effective foreign currency forward exchange contracts Other Comprehensive Income (Loss), Unrealized Gain (Loss) on Derivatives Arising During Period, Tax Tax effect on reclassification of (gains) losses on available-for-sale securities recognized during the period Other Comprehensive Income (Loss), Reclassification Adjustment for Sale of Securities Included in Net Income, Tax Commitments And Contingencies Commitments and Contingencies Disclosure [Text Block] Schedule of Revenue from External Customers Attributed to Foreign Countries by Geographic Area [Table Text Block] Schedule Long-Lived Assets By Geographic Area Schedule of Revenue from External Customers and Long-Lived Assets, by Geographical Areas [Table Text Block] Revenue from External Customers by Products and Services Revenue from External Customers by Products and Services [Table Text Block] Stockholders' Equity Note [Abstract] Schedule of Share-based Compensation Arrangements by Share-based Payment Award [Table] Schedule of Share-based Compensation Arrangements by Share-based Payment Award [Table] Schedule of Share-based Compensation Arrangement by Share-based Payment Award, Award Type and Plan Name [Axis] Schedule of Share-based Compensation Arrangement by Share-based Payment Award, Award Type and Plan Name [Axis] Share-based Compensation Arrangements by Share-based Payment Award, Award Type and Plan Name [Domain] Share-based Compensation Arrangements by Share-based Payment Award, Award Type and Plan Name [Domain] Minimum [Member] Minimum [Member] Maximum [Member] Maximum [Member] Performance Stock Unit [Member] Performance Stock Unit [Member] Performance Stock Unit [Member] Share-based Compensation Arrangement by Share-based Payment Award [Line Items] Share-based Compensation Arrangement by Share-based Payment Award [Line Items] Performance Stock Units to Class A Common Stock, Conversion Ratio Performance Stock Units to ClassA Common Stock, Conversion Ratio Performance Stock Units to ClassA Common Stock, Conversion Ratio Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Outstanding, Aggregate Intrinsic Value Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Outstanding, Aggregate Intrinsic Value Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Outstanding, Aggregate Intrinsic Value Restricted stock-based awards, vested Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period, Total Fair Value Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested [Roll Forward] Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested [Roll Forward] Outstanding, Weighted-Average Grant Date Fair Value (per share) Share-based Compensation Arrangement by Share-based 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Forfeited, Weighted-Average Grant Date Fair Value (per share) Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Forfeited in Period, Weighted Average Grant Date Fair Value Forfeited, Number of Shares Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Forfeited in Period Outstanding, Weighted-Average Grant Date Fair Value (per share) Outstanding, Number of Shares Property, Plant and Equipment [Abstract] Components Of Property And Equipment Property, Plant and Equipment [Table Text Block] Schedule of Property, Plant and Equipment [Table] Schedule of Property, Plant and Equipment [Table] Property, Plant and Equipment by Type [Axis] Property, Plant and Equipment by Type [Axis] Property, Plant and Equipment, Type [Domain] Property, Plant and Equipment, Type [Domain] Property, Plant and Equipment [Line Items] Property, Plant and Equipment [Line Items] Stockholders' Equity Stockholders' Equity Note Disclosure [Text Block] Securities (Assets) [Member] Securities (Assets) [Member] Fair Value Available-for-sale Securities, Continuous Unrealized Loss Position, Less than Twelve Months, Fair Value Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Aggregate Losses Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Aggregate Losses LIBOR period, days Debt Instrument, Description of Variable Rate Basis Spread over LIBOR (basis points) Debt Instrument, Basis Spread on Variable Rate Repayments of principal Repayments of Notes Payable Summary Of Minimum Lease Payments Schedule of Future Minimum Rental Payments for Operating Leases [Table Text Block] Equipment and software Equipment and software Gross Equipment and software Gross Buildings and improvements Buildings and Improvements, Gross Furniture and fixtures Furniture and Fixtures, Gross Construction in progress Construction in Progress, 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Other Other Accrued Liabilities, Current Total Derivative Instruments and Hedging Activities Disclosure [Abstract] Derivative Instruments Derivative Instruments and Hedging Activities Disclosure [Text Block] Income Tax Expense (Benefit) [Abstract] Income Taxes Income Tax Disclosure [Text Block] Stock Repurchase Program [Axis] Stock Repurchase Program [Axis] Stock Repurchase Program [Axis] Stock Repurchase Program [Domain] Stock Repurchase Program [Domain] Stock Repurchase Program [Domain] Repurchase of Equity [Member] Repurchase of Equity [Member] February 2012 Stock Repurchase Program [Member] February 2012 Stock Repurchase Program [Member] February 2012 Stock Repurchase Program [Member] February 2011 Stock Repurchase Program [Member] February 2011 Stock Repurchase Program [Member] February 2011 Stock Repurchase Program [Member] March 2010 Stock Repurchase Program [Member] March 2010 Stock Repurchase Program [Member] March 2010 Stock Repurchase Program [Member] Software and Software Development Costs [Member] Software and Software Development Costs [Member] Range [Axis] Range [Axis] Range [Domain] Range [Domain] Share-based Compensation, Shares Authorized under Stock Option Plans, by Exercise Price Range [Axis] Share-based Compensation, Shares Authorized under Stock Option Plans, by Exercise Price Range [Axis] Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Domain] Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Domain] Fair market value of the stock at the time of grant [Member] Fair market value of the stock at the time of grant [Member] Fair market value of the stock at the time of grant [Member] Fair value of the stock at the time of exercise [Member] Fair value of the stock at the time of exercise [Member] Fair value of the stock at the time of exercise [Member] Employee Stock [Member] Employee Stock [Member] Stock Repurchase For Tax Withholding [Member] Stock Repurchase For Tax Withholding Member Stock Repurchase for Tax Withholding [Member] Authorized repurchase of common stock Stock Repurchase Program, Authorized Amount Stock repurchased and retired during period, shares Stock Repurchased and Retired During Period, Shares Weighted-average price for shares repurchased and retired, per share Treasury Stock Acquired, Average Cost Per Share Stock repurchased and retired during period, value Stock Repurchased and Retired During Period, Value Stock Repurchase Program, Remaining Authorized Repurchase Amount Stock Repurchase Program, Remaining Authorized Repurchase Amount Debt Securities [Member] Debt Securities [Member] Fixed Income Securities [Member] Fixed Income Securities [Member] Due within one year, Amortized Cost Basis Available-for-sale Securities, Debt Maturities, within One Year, Amortized Cost Basis Due after 1 year through 5 years, Amortized Cost Basis Available-for-sale Securities, Debt Maturities, after One Through Five Years, Amortized Cost Basis Due after 5 years, Amortized Cost Basis Available-for-sale Securities, Debt Maturities, after Five Through Ten Years, Amortized Cost Basis Total investments, Amortized Cost Basis Due within one year, Aggregate Fair Value Available-for-sale Securities, Debt Maturities, within One Year, Fair Value Due after 1 year through 5 years, Aggregate Fair Value Available-for-sale Securities, Debt Maturities, after One Through Five Years, Fair Value Due after 5 years, Aggregate Fair Value Available-for-sale Securities, Debt Maturities, after Five Through Ten Years, Fair Value Fair Values Derivatives, Balance Sheet Location, by Derivative Contract Type [Table] Fair Values Derivatives, Balance Sheet Location, by Derivative Contract Type [Table] Derivative Instrument Risk [Axis] Derivative Instrument Risk [Axis] Derivative Contract Type [Domain] Derivative Contract Type [Domain] Foreign Exchange Forward [Member] Foreign Exchange Forward [Member] Derivatives, Fair Value [Line Items] Derivatives, Fair Value [Line Items] Maximum Length of Time Hedged in Price Risk Cash Flow Hedge Maximum Length of Time Hedged in Price Risk Cash Flow Hedge Notional Amount of Foreign Currency Cash Flow Hedge Derivatives Notional Amount of Foreign Currency Cash Flow Hedge Derivatives Contractual Term (in months) Maturity of Foreign Currency Derivatives Notional Amount of Foreign Currency Derivatives Notional Amount of Foreign Currency Derivatives Cash Proceeds Stock Issued During Period, Value, Employee Stock Purchase Plan Class A common shares purchased Stock Issued During Period, Shares, Employee Stock Purchase Plans Weighted-average price per share Share-based Compensation Arrangement by Share-based Payment Award, Per Share Weighted Average Price of Shares Purchased Other Employee Related Liabilities, Current Other Employee Related Liabilities, Current Related Party Transaction [Line Items] Related Party Transaction [Line Items] Document And Entity Information [Abstract] Document and Entity Information [Abstract] Document Information [Table] Document Information [Table] Document Information, Document [Axis] Document Information, Document [Axis] Document [Domain] Document [Domain] Document Information [Line Items] Document Information [Line Items] Entity Registrant Name Entity Registrant Name Entity Central Index Key Entity Central Index Key Current Fiscal Year End Date Current Fiscal Year End Date Entity Filer Category Entity Filer Category Document Type Document Type Document Period End Date Document Period End Date Document Fiscal Year Focus Document Fiscal Year Focus Document Fiscal Period Focus Document Fiscal Period Focus Amendment Flag Amendment Flag Entity Common Stock, Shares Outstanding Entity Common Stock, Shares Outstanding Entity Well-known Seasoned Issuer Entity Well-known Seasoned Issuer Entity Voluntary Filers Entity Voluntary Filers Entity Current Reporting Status Entity Current Reporting Status Entity Public Float Entity Public Float Unearned Revenue Deferred Revenue Disclosure [Text Block] Overview And Basis Of Presentation [Abstract] Overview and Basis of Presentation [Abstract] Overview And Basis Of Presentation [Table] Overview And Basis Of Presentation [Table] Overview and Basis of Presentation [Table] Outstanding ownership percentage of VMware Related Party, Ownership Percent Related Party, Ownership Percent Common Stock, Shares Outstanding Research and Development and Capitalilzed Software Development Costs [Abstract] Research and Development and Capitalilzed Software Development Costs [Abstract] Research And Development And Capitalized Software Development Costs [Table] Research And Development And Capitalized Software Development Costs [Table] Research and Development and Capitalized Software Development Costs [Table] Research and Development and Capitalized Software Development Costs [Line Items] Research and Development and Capitalized Software Development Costs [Line Items] Research and Development and Capitalized 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