Finite-Lived Intangible Assets, Net [Abstract] Schedule of Finite-Lived Intangible Assets [Table] Schedule of Finite-Lived Intangible Assets [Table] 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] Developed technologies, at cost Developed Technology Rights [Member] Customer relationships, trade names, patents, and user lists, at cost Customer Relationships, Trade Names, Patents, and User List [Member] Customer Relationships, Trade Names, Patents, and User List [Member] Finite-Lived Intangible Assets [Line Items] Finite-Lived Intangible Assets [Line Items] Other intangible assets, at cost Finite-Lived Intangible Assets, Gross Less: Accumulated amortization Finite-Lived Intangible Assets, Accumulated Amortization Other intangible assets, net Finite-Lived Intangible Assets, Net Disclosure of Compensation Related Costs, Share-based Payments [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] Plan Name [Axis] Plan Name [Axis] Plan Name [Domain] Plan Name [Domain] Employee Qualified Stock Purchase Plan 1998 ESP Plan Employee Qualified Stock Purchase Plan 1998 ESP Plan [Member] Employee Qualified Stock Purchase Plan 1998 ESP Plan [Member] Award Type [Axis] Award Type [Axis] Equity Award [Domain] Equity Award [Domain] Performance Stock Unit Performance Shares [Member] Range [Axis] Range [Axis] Range [Domain] Range [Domain] Minimum Minimum [Member] Maximum Maximum [Member] Share-based Compensation Arrangement by Share-based Payment Award [Line Items] Share-based Compensation Arrangement by Share-based Payment Award [Line Items] Range of expected volatilities Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Expected Volatility Rate Range of expected lives (in years) Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Expected Term Expected dividends Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Expected Dividend Rate Range of risk-free interest rates Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Risk Free Interest Rate Income Tax Disclosure [Abstract] Income Tax Income Tax Disclosure [Text Block] Document and Entity Information [Abstract] Document and Entity Information [Abstract] Document Type Document Type Amendment Flag Amendment Flag Document Period End Date Document Period End Date Document Fiscal Year Focus Document Fiscal Year Focus Document Fiscal Period Focus Document Fiscal Period Focus Trading Symbol Trading Symbol 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 Entity Common Stock, Shares Outstanding Entity Common Stock, Shares Outstanding Investments, All Other Investments [Abstract] 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 [Axis] Derivative Contract Type [Domain] Derivative Contract [Domain] Foreign currency contracts Foreign Exchange Contract [Member] Hedging Designation [Axis] Hedging Designation [Axis] Hedging Designation [Domain] Hedging Designation [Domain] Designated as hedging instrument Designated as Hedging Instrument [Member] Derivatives not designated as hedging instruments Not Designated as Hedging Instrument [Member] Derivatives, Fair Value, by Balance Sheet Location [Axis] Balance Sheet Location [Axis] Balance Sheet Location [Domain] Balance Sheet Location [Domain] Prepaid expenses and other current assets Prepaid Expenses and Other Current Assets [Member] Other accrued liabilities Other Accrued Liabilities [Member] Other Accrued Liabilities [Member] Derivatives, Fair Value [Line Items] Derivatives, Fair Value [Line Items] Derivative instrument, term Derivative, Term of Contract Derivative, notional amount Derivative, Notional Amount Net gain expected to be recognized in next 12 months Interest Rate Cash Flow Hedge Gain (Loss) to be Reclassified During Next 12 Months, Net Derivative Assets Derivative Asset, Fair Value, Amount Not Offset Against Collateral Derivative Liabilities Derivative Liability, Fair Value, Amount Not Offset Against Collateral Schedule of Available-for-sale Securities [Table] Schedule of Available-for-sale Securities [Table] Fair Value, Hierarchy [Axis] Fair Value, Hierarchy [Axis] Fair Value, Measurements, Fair Value Hierarchy [Domain] Fair Value Hierarchy [Domain] Level 1 Fair Value, Inputs, Level 1 [Member] Level 2 Fair Value, Inputs, Level 2 [Member] Level 3 Fair Value, Inputs, Level 3 [Member] Cash and Cash Equivalents [Axis] Cash and Cash Equivalents [Axis] Cash and Cash Equivalents [Domain] Cash and Cash Equivalents [Domain] Agency bonds Agency Bonds [Member] Agency Bonds [Member] Asset backed securities Asset-backed Securities [Member] Certificates of deposit Certificates of Deposit [Member] Corporate debt securities Corporate Debt Securities [Member] Commercial paper Commercial Paper [Member] Custody cash deposit Deposits [Member] Municipal bonds Municipal Bonds [Member] Money Market funds Money Market Funds [Member] Sovereign debt Sovereign Debt [Member] U.S. government securities US Government Debt Securities [Member] Balance Sheet Location [Axis] Marketable Securities, Current Marketable Securities, Current [Member] Marketable Securities, Current [Member] Marketable Securities, Noncurrent Marketable Securities, Noncurrent [Member] Marketable Securities, Noncurrent [Member] Convertible debt securities Other Assets [Member] Schedule of Available-for-sale Securities, Major Types of Debt and Equity Securities [Axis] Major Types of Debt and Equity Securities [Axis] Major Types of Debt and Equity Securities [Domain] Major Types of Debt and Equity Securities [Domain] Schedule of Available-for-sale Securities [Line Items] Schedule of Available-for-sale Securities [Line Items] Cash equivalents Cash and Cash Equivalents, at Carrying Value Cash equivalents, Fair Value Cash and Cash Equivalents, Fair Value Disclosure Marketable securities, Amortized Cost Available-for-sale Securities, Amortized Cost Basis Marketable securities, Gross unrealized gains Available-for-sale Debt Securities, Accumulated Gross Unrealized Gain, before Tax Marketable securities, Gross unrealized losses Available-for-sale Debt Securities, Accumulated Gross Unrealized Loss, before Tax Marketable securities, Fair Value Available-for-sale Securities Mutual funds, Amortized Cost Trading Securities, Cost Mutual funds, Gross unrealized gains Trading Securities, Accumulated Gross Unrealized Gain, before Tax Trading Securities, Accumulated Gross Unrealized Gain, before Tax Mutual funds, Gross unrealized losses Trading Securities, Accumulated Gross Unrealized Loss, before Tax Trading Securities, Accumulated Gross Unrealized Loss, before Tax Mutual funds, Fair Value Trading Securities Convertible debt securities, Amortized Cost Convertible Debt Securities, Amortized Cost Convertible Debt Securities, Amortized Cost Convertible debt securities, Gross unrealized gains Convertible Debt Securities, Unrealized Gains Convertible Debt Securities, Unrealized Gains Convertible debt securities, Gross unrealized losses Convertible Debt Securities, Unrealized Losses Convertible Debt Securities, Unrealized Losses Convertible debt securities, Fair Value Convertible Debt Securities, Fair Value Disclosure Convertible Debt Securities, Fair Value Disclosure Derivative contract assets, Amortized Cost Derivative Asset, Fair Value, Gross Asset Derivative contract assets, Gross unrealized gains Derivative Assets, Accumulated Gross Unrealized Gain, before Tax Derivative Assets, Accumulated Gross Unrealized Gain, before Tax Derivative contract assets, Gross unrealized losses Derivative Assets, Accumulated Gross Unrealized Loss, before Tax Derivative Assets, Accumulated Gross Unrealized Loss, before Tax Derivative contract assets Derivative Asset Derivative contract liabilities, Amortized Cost Derivative Liability, Fair Value, Gross Liability Derivative contract liabilities, Gross unrealized gains Derivative Liabilities, Accumulated Gross Unrealized Gain, before Tax Derivative Liabilities, Accumulated Gross Unrealized Gain, before Tax Derivative contract liabilities, Gross unrealized losses Derivative Liabilities, Accumulated Gross Unrealized Loss, before Tax Derivative Liabilities, Accumulated Gross Unrealized Loss, before Tax Derivative contract liabilities Derivative Liability Amortized Cost Amortized Cost Securities Amortized Cost Securities Gross unrealized gains Investments, Accumulated Gross Unrealized Gain, before Tax Investments, Accumulated Gross Unrealized Gain, before Tax Gross unrealized losses Investments, Accumulated Gross Unrealized Loss, before Tax Investments, Accumulated Gross Unrealized Loss, before Tax Fair Value Fair Value, Assets Measured on Recurring Basis Fair Value, Assets Measured on Recurring Basis Business Combinations [Abstract] Acquisitions Business Combination Disclosure [Text Block] Financial Instruments Financial Instruments Disclosure [Text Block] Restructuring and Related Activities [Abstract] Schedule of Restructuring and Related Costs [Table] Schedule of Restructuring and Related Costs [Table] Restructuring Plan [Axis] Restructuring Plan [Axis] Restructuring Plan [Domain] Restructuring Plan [Domain] Fiscal 2017 Plan Fiscal 2017 Plan [Member] Fiscal 2017 Plan [Member] Restructuring Type [Axis] Restructuring Type [Axis] Type of Restructuring [Domain] Type of Restructuring [Domain] Employee termination costs Employee Severance [Member] Lease termination and other exit costs Facility Closing [Member] Restructuring Cost and Reserve [Line Items] Restructuring Cost and Reserve [Line Items] Restructuring Reserve [Roll Forward] Restructuring Reserve [Roll Forward] Beginning Balance Restructuring Reserve Additions Restructuring Charges Payments Payments for Restructuring Adjustments Restructuring Reserve, Translation and Other Adjustment Ending Balance Current portion Restructuring Reserve, Current Non-current portion Restructuring Reserve, Noncurrent Total Restructuring Reserve Risks and Uncertainties [Abstract] Concentration of Risk [Table] Concentration Risk [Table] Customer [Axis] Customer [Axis] Customer [Domain] Customer [Domain] Tech Data Tech Data [Member] Tech Data [Member] Concentration Risk by Benchmark [Axis] Concentration Risk Benchmark [Axis] Concentration Risk Benchmark [Domain] Concentration Risk Benchmark [Domain] Net Revenue Sales Revenue, Net [Member] Accounts Receivable Accounts Receivable [Member] Concentration Risk [Line Items] Concentration Risk [Line Items] Unsecured revolving credit facility Line of Credit Facility, Maximum Borrowing Capacity Concentration risk Concentration Risk, Percentage Earnings Per Share [Abstract] Schedule of Antidilutive Securities Excluded from Computation of Earnings Per Share [Table] Schedule of Antidilutive Securities Excluded from Computation of Earnings Per Share [Table] Exercise Price Range [Axis] 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] Exercise Price Higher than Average Market Value Exercise Price Higher than Average Market Value [Member] Exercise Price Higher than Average Market Value [Member] Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items] Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items] Net loss Net Income (Loss) Attributable to Parent Denominator: Weighted Average Number of Shares Outstanding, Diluted [Abstract] Denominator for basic net loss per share—weighted average shares (shares) Weighted Average Number of Shares Outstanding, Basic Effect of dilutive securities (shares) Weighted Average Number Diluted Shares Outstanding Adjustment Denominator for dilutive net loss per share (shares) Weighted Average Number of Shares Outstanding, Diluted Basic net loss per share (in usd per share) Earnings Per Share, Basic Diluted net loss per share (in usd per share) Earnings Per Share, Diluted Potentially dilutive shares excluded from the computation of diluted net income per share (shares) Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount Restructuring charges and other facility exit costs, net Restructuring and Related Activities Disclosure [Text Block] Organization, Consolidation and Presentation of Financial Statements [Abstract] Basis of Presentation Organization, Consolidation and Presentation of Financial Statements Disclosure [Text Block] Segment Reporting [Abstract] Number of segment managers Number of Segment Managers Number of Segment Managers Number of operating segments Number of Operating Segments Statement of Comprehensive Income [Abstract] Net (loss) on derivative instruments, tax effect Other Comprehensive Income (Loss), Derivatives Qualifying as Hedges, Tax Change in net unrealized gain (loss) on available-for-sale securities, tax effect Other Comprehensive Income (Loss), Available-for-sale Securities, Tax Other Comprehensive (Income) Loss, Defined Benefit Plan, after Reclassification Adjustment, Tax Other Comprehensive (Income) Loss, Defined Benefit Plan, after Reclassification Adjustment, Tax Net change in cumulative foreign currency translation loss, tax effect Other Comprehensive Income (Loss), Foreign Currency Translation Gain (Loss) Arising During Period, Tax Cost Available-for-sale Securities, Debt Maturities, Amortized Cost Basis, Rolling Maturity [Abstract] Due within 1 year Available-for-sale Securities, Debt Maturities, Next Twelve Months, Amortized Cost Basis Due in 1 year through 5 years Available-for-sale Securities, Debt Maturities, Year Two Through Five, Amortized Cost Basis Due in 5 years through 10 years Available-for-sale Securities, Debt Maturities, Year Six Through Ten, Amortized Cost Basis Due after 10 years Available-for-sale Securities, Debt Maturities, after Ten Years, Amortized Cost Basis Total Available-for-sale Debt Securities, Amortized Cost Basis Fair Value Available-for-sale Securities, Debt Maturities, Fair Value, Rolling Maturity [Abstract] Due within 1 year Available-for-sale Securities, Debt Maturities, Next Twelve Months, Fair Value Due in 1 year through 5 years Available-for-sale Securities, Debt Maturities, Year Two Through Five, Fair Value Due in 5 years through 10 years Available-for-sale Securities, Debt Maturities, Year Six Through Ten, Fair Value Due after 10 years Available-for-sale Securities, Debt Maturities, after Ten Years, Fair Value Total Available-for-sale Securities, Debt Maturities, without Single Maturity Date, Fair Value Line of Credit Facility [Abstract] Borrowing Arrangements Debt Disclosure [Text Block] Stock-based Compensation Expense Disclosure of Compensation Related Costs, Share-based Payments [Text Block] Schedule of Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Table] Schedule of Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Table] Income Statement Location [Axis] Income Statement Location [Axis] Income Statement Location [Domain] Income Statement Location [Domain] Cost of maintenance and subscription revenue Cost of Goods Sold, Subscription [Member] Cost of Goods Sold, Subscription [Member] Cost of license and other revenue License Costs [Member] License Costs [Member] Marketing and sales Selling and Marketing Expense [Member] Research and development Research and Development Expense [Member] General and administrative General and Administrative Expense [Member] Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items] Share-based Compensation Arrangement by Share-based Payment Award, Compensation Cost [Line Items] Stock-based compensation expense related to stock awards and ESPP purchases Allocated Share-based Compensation Expense Tax benefit Employee Service Share-based Compensation, Tax Benefit from Compensation Expense Stock-based compensation expense related to stock awards and ESPP purchases, net of tax Allocated Share-based Compensation Expense, Net of Tax Statement of Cash Flows [Abstract] Operating activities: Net Cash Provided by (Used in) Operating Activities [Abstract] Adjustments to reconcile net loss to net cash (used in) provided by operating activities: Adjustments to 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by operating activities Net Cash Provided by (Used in) Operating Activities Investing activities: Net Cash Provided by (Used in) Investing Activities [Abstract] Purchases of marketable securities Payments to Acquire Marketable Securities Sales of marketable securities Proceeds from Sale of Available-for-sale Securities Maturities of marketable securities Proceeds from Maturities, Prepayments and Calls of Available-for-sale Securities Capital expenditures Payments to Acquire Property, Plant, and Equipment Acquisitions, net of cash acquired Payments to Acquire Businesses, Net of Cash Acquired Other investing activities Payments for (Proceeds from) Other Investing Activities Net cash provided by 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, net of issuance costs Proceeds from Issuance of Common Stock Taxes paid related to net share settlement of equity awards Payments Related to Tax Withholding for Share-based Compensation Repurchases of common stock Payments for Repurchase of Common Stock Proceeds from debt, net of discount Proceeds from Issuance of Long-term Debt Repayment of debt Repayments of Lines of Credit Other financing activities Proceeds from (Payments for) Other Financing Activities Net cash used in financing activities Net Cash Provided by (Used in) Financing Activities Effect of exchange rate changes on cash and cash equivalents Effect of Exchange Rate on Cash and Cash Equivalents Net (decrease) increase in cash and cash equivalents Cash and Cash Equivalents, Period Increase (Decrease) Cash and cash equivalents at beginning of period Cash and cash equivalents at end of period New Accounting Pronouncements and Changes in Accounting Principles [Abstract] Recently Issued Accounting Standards New Accounting Pronouncements and Changes in Accounting Principles [Text Block] Segment, Geographic and Product Family Information Segment Reporting Disclosure [Text Block] Property, Plant and Equipment [Abstract] Property, Plant and Equipment [Table] Property, Plant and Equipment [Table] Property, Plant and Equipment, Type [Axis] Property, Plant and Equipment, Type [Axis] Property, Plant and Equipment, Type [Domain] Property, Plant and Equipment, Type [Domain] Computer hardware, at cost Computer Equipment [Member] Computer software, at cost Software Development [Member] Leasehold improvements, land and buildings, at cost Land, Buildings and Improvements [Member] Furniture and equipment, at cost Furniture and Equipment [Member] Furniture and Equipment [Member] Property, Plant and Equipment [Line Items] Property, Plant and Equipment [Line Items] Computer software, hardware, leasehold improvements, furniture and equipment, gross Property, Plant and Equipment, Gross Less: Accumulated depreciation Accumulated Depreciation, Depletion and Amortization, Property, Plant, and Equipment Computer software, hardware, leasehold improvements, furniture and equipment, net Property, Plant and Equipment, Net Concentration of Credit Risk Concentration Risk Disclosure [Text Block] Class of Stock Disclosures [Abstract] Common Stock Repurchase Program Treasury Stock [Text Block] Schedule of Changes in Revenue and Cost of Revenue Schedule of Error Corrections and Prior Period Adjustments [Table Text Block] Net Loss Per Share Earnings Per Share [Text Block] Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Table] Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Table] Fair Value by Asset Class [Axis] Asset Class [Axis] Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, by Asset Class [Domain] Asset Class [Domain] Derivative Contracts Derivative [Member] Convertible Debt Securities Convertible Debt Securities [Member] Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items] Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items] Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward] Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward] Balances, January 31, 2017 Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset Value Purchases Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Purchases Losses included in earnings Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Gain (Loss) Included in Earnings Losses included in OCI Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Gain (Loss) Included in Other Comprehensive Income (Loss) Balances, July 31, 2017 Accumulated Other Comprehensive Income (Loss), Net of Tax [Abstract] Schedule of Accumulated Other Comprehensive Loss Schedule of Accumulated Other Comprehensive Income (Loss) [Table Text Block] Schedule of Restructuring and Related Costs Restructuring and Related Costs [Table Text Block] Cost And Fair Value Of Financial Instruments Disclosure Cost And Fair Value Of Financial Instruments [Table Text Block] Cost and Fair Value of Financial Instruments Disclosure [Table Text Block] Fair Value, Assets Measured on Recurring Basis Fair Value, Assets Measured on Recurring Basis [Table Text Block] Available-for-sale Securities Available-for-sale Securities [Table Text Block] Schedule of Derivative Instruments in Statement of Financial Position, Fair Value Schedule of Derivative Instruments in Statement of Financial Position, Fair Value [Table Text Block] Schedule of Derivative Instruments, Gain (Loss) in Statement of Financial Performance Derivative Instruments, Gain (Loss) [Table Text Block] Schedule of Finite-Lived Intangible Assets Schedule of Finite-Lived Intangible Assets [Table Text Block] Other comprehensive income (loss), net of reclassifications: Other Comprehensive Income (Loss), Derivatives Qualifying as Hedges, Net of Tax, Portion Attributable to Parent [Abstract] Net loss on derivative instruments (net of tax effect of $0.9, $1.1, $1.4 and ($0.8), respectively) Other Comprehensive Income (Loss), Derivatives Qualifying as Hedges, Net of Tax, Portion Attributable to Parent Change in net unrealized (loss) gain on available-for-sale securities (net of tax effect of $0.4, ($0.1), $0.1, and ($0.6), respectively) Other Comprehensive Income (Loss), Available-for-sale Securities Adjustment, Net of Tax, Portion Attributable to Parent Change in defined benefit pension items (net of tax effect of $0.0, ($0.2), $0.0, and ($0.2), respectively) Other Comprehensive (Income) Loss, Defined Benefit Plan, after Reclassification Adjustment, after Tax Net change in cumulative foreign currency translation gain (loss) (net of tax effect of ($0.6), $0.0, ($0.9) and $0.0, respectively) Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Adjustment, Net of Tax, Portion Attributable to Parent Total other comprehensive income (loss) Other Comprehensive Income (Loss), Net of Tax, Portion Attributable to Parent Total comprehensive loss Comprehensive Income (Loss), Net of Tax, Attributable to Parent Accumulated Other Comprehensive Income (Loss) [Table] Accumulated Other Comprehensive Income (Loss) [Table] Equity Components [Axis] Equity Components [Axis] Equity Component [Domain] Equity Component [Domain] Net Unrealized Gains (Losses) on Derivative Instruments Accumulated Net Gain (Loss) from Cash Flow Hedges Attributable to Parent [Member] Net Unrealized Gains (Losses) on Available-for-Sale Securities Accumulated Net Investment Gain (Loss) Attributable to Parent [Member] Defined Benefit Pension Components Accumulated Defined Benefit Plans Adjustment Attributable to Parent [Member] Foreign Currency Translation Adjustments Accumulated Foreign Currency Adjustment Attributable to Parent [Member] AOCI Attributable to Parent AOCI Attributable to Parent [Member] Accumulated Other Comprehensive Income (Loss) [Line Items] Accumulated Other Comprehensive Income (Loss) [Line Items] AOCI Attributable to Parent, Net of Tax [Roll Forward] AOCI Attributable to Parent, Net of Tax [Roll Forward] Beginning balance Stockholders' Equity Attributable to Parent Other comprehensive (loss) income before reclassifications OCI, before Reclassifications, before Tax, Attributable to Parent Pre-tax (gains) losses reclassified from accumulated other comprehensive loss Reclassification from AOCI, Current Period, before Tax, Attributable to Parent Tax effects Other Comprehensive Income (Loss), Tax, Portion Attributable to Parent Ending balance Schedule of Segment Reporting Information, by Segment [Table] Schedule of Segment Reporting Information, by Segment [Table] Geographical [Axis] Geographical [Axis] Geographical [Domain] Geographical [Domain] Americas Americas [Member] Europe, Middle East and Africa EMEA [Member] Asia Pacific Asia Pacific [Member] Region Reporting Information, by Secondary Region [Axis] Region Reporting Information, by Secondary Region [Axis] Region Reporting Information, by Secondary Region [Axis] Region Reporting Information, by Secondary Region [Domain] Region Reporting Information, by Secondary Region [Domain] Region Reporting Information, by Secondary Region [Domain] U.S. UNITED STATES Other Americas Other Americas [Member] Other Americas Segments [Axis] Segments [Axis] Segments [Domain] Segments [Domain] Architecture, Engineering and Construction Architecture Engineering And Construction [Member] Architecture, Engineering and Construction Manufacturing Manufacturing [Member] Manufacturing AutoCAD and AutoCAD LT AutoCAD and AutoCAD LT Family [Member] AutoCAD and AutoCAD LT Family [Member] Media and Entertainment Media And Entertainment [member] Media and Entertainment Other Other [Member] Other [Member] Segment Reporting Information [Line Items] Segment Reporting Information [Line Items] Net revenue Revenue, Net Schedule of Long-term Debt Instruments [Table] Schedule of Long-term Debt Instruments [Table] Long-term Debt, Type [Axis] Long-term Debt, Type [Axis] Long-term Debt, Type [Domain] Long-term Debt, Type [Domain] Senior Notes Senior Notes [Member] Debt Instrument [Axis] Debt Instrument [Axis] Debt Instrument, Name [Domain] Debt Instrument, Name [Domain] 3.5% Notes due June 15, 2027 3.5% Notes due June 15, 2027 [Member] 3.5% Notes due June 15, 2027 [Member] Senior Notes due 2020 Senior Notes due 2020 [Member] Senior Notes due 2020 [Member] Senior Notes due 2025 Senior Notes due 2025 [Member] Senior Notes due 2025 [Member] 2015 Senior Notes 2015 Senior Notes [Member] 2015 Senior Notes [Member] Senior Notes 2017 Senior Notes due 2017 [Member] Senior Notes due 2017 [Member] Senior Notes 2022 Senior Notes due 2022 [Member] Senior Notes due 2022 [Member] 2012 Senior Notes 2012 Senior Notes [Member] 2012 Senior Notes [Member] Debt Instrument [Line Items] Debt Instrument [Line Items] Debt instrument, face amount Debt Instrument, Face Amount Debt instrument, stated interest rate Debt Instrument, Interest Rate, Stated Percentage Debt instrument, unamortized discount Debt Instrument, Unamortized Discount Debt issuance costs, gross Debt Issuance Costs, Gross Proceeds from debt, net of issuance costs Proceeds from Debt, Net of Issuance Costs Debt issuance redemption discount premium, percentage of principle amount Debt Issuance Redemption Discount Premium Percentage Of Principal Amount Debt Issuance Redemption Discount Premium Percentage Of Principal Amount Debt fair value Debt Instrument, Fair Value Disclosure Redemption price Debt Instrument, Redemption Price Debt Instrument, Redemption Price Repayments of debt Repayments of Debt Line of credit facility, maximum borrowing capacity Line of credit facility, additional borrowings available Line of credit facility, additional borrowings available Line of credit facility, additional borrowings available Line of credit facility, outstanding borrowings Long-term Line of Credit Class of Treasury Stock [Table] Class of Treasury Stock [Table] Share Repurchase Program [Axis] Share Repurchase Program [Axis] Share Repurchase Program [Domain] Share Repurchase Program [Domain] Common Stock Repurchase Program Common Stock Repurchase Program [member] Common Stock Repurchase Program Common Stock Common Stock [Member] Retained Earnings Retained Earnings [Member] Equity, Class of Treasury Stock [Line Items] Equity, Class of Treasury Stock [Line Items] Common stock repurchased and retired (in shares) Stock Repurchased and Retired During Period, Shares Repurchased shares of its common stock on the open market, average repurchase price per share (in usd per share) Treasury Stock Acquired, Average Cost Per Share Repurchased shares of its common stock on the open market, value Stock Repurchased and Retired During Period, Value Common Stock shares remained available for repurchase under repurchase plans (in shares) Stock Repurchase Program, Remaining Number of Shares Authorized to be Repurchased Goodwill and Intangible Assets Disclosure [Abstract] Goodwill [Roll Forward] Goodwill [Roll Forward] Goodwill gross, beginning of the period Goodwill, Gross Less: accumulated impairment losses, beginning of the period (as of February 1, 2017 and February 1, 2016, respectively) Goodwill, Impaired, Accumulated Impairment Loss Goodwill net, beginning of the period Goodwill Additions arising from acquisitions during the period Goodwill, Acquired During Period Effect of foreign currency translation, purchase accounting adjustments, and other Goodwill, Translation and Purchase Accounting Adjustments Goodwill net, end of the period Goodwill impairment Goodwill, Impairment Loss Derivative Instruments, Gain (Loss) by Hedging Relationship, by Income Statement Location, by Derivative Instrument Risk [Table] Derivative Instruments, Gain (Loss) [Table] Derivative Instrument Risk [Axis] Income Statement Location [Axis] Income Statement Location [Domain] Net revenue Sales [Member] Operating expenses Operating Expense [Member] Interest and other expense, net Interest and other income (expense), net [member] Interest Income (Expense), Net Derivative Instruments, Gain (Loss) [Line Items] Derivative Instruments, Gain (Loss) [Line Items] Amount of (loss) gain recognized in accumulated other comprehensive (loss) income on derivatives (effective portion) Derivative Instruments, Gain (Loss) Recognized in Other Comprehensive Income (Loss), Effective Portion, Net Amount and location of gain (loss) reclassified from accumulated other comprehensive (loss) income into (loss) income (effective portion) Derivative Instruments, Gain (Loss) Reclassified from Accumulated OCI into Income, Effective Portion, Net Amount and location of gain (loss) recognized in (loss) income on derivatives (ineffective portion and amount excluded from effectiveness testing) Derivative Instruments, Gain (Loss) Recognized in Income, Ineffective Portion and Amount Excluded from Effectiveness Testing, Net Amount and location of loss recognized in (loss) income on derivatives Derivative, Gain (Loss) on Derivative, Net Deferred Compensation Arrangements [Abstract] Schedule of Deferred Compensation Arrangement with Individual, Excluding Share-based Payments and Postretirement Benefits, by Title of Individual and by Type of Deferred Compensation [Table] Schedule of Deferred Compensation Arrangement with Individual, Excluding Share-based Payments and Postretirement Benefits, by Title of Individual and by Type of Deferred Compensation [Table] Fair Value, Assets and Liabilities Measured on a Recurring Basis [Axis] Fair Value, Assets and Liabilities Measured on a Recurring Basis [Axis] Fair Value, Assets and Liabilities Measured on a Recurring Basis Axis Fair Value, Assets and Liabilities Measured on a Recurring Basis [Domain] Fair Value, Assets and Liabilities Measured on a Recurring Basis [Domain] Fair Value, Assets and Liabilities Measured on a Recurring Basis [Domain] Rabbi Trust Member Rabbi Trust Member Rabbi Trust Deferred Compensation Arrangement with Individual, Excluding Share-based Payments and Postretirement Benefits [Line Items] Deferred Compensation Arrangement with Individual, Excluding Share-based Payments and Postretirement Benefits [Line Items] Marketable securities Marketable Securities Deferred compensation liability Deferred Compensation Liability, Current and Noncurrent Deferred compensation liability current Deferred Compensation Liability, Current Deferred compensation liability non-current Deferred Compensation Liability, Classified, Noncurrent Schedule of Revenue from External Customers Attributed to Foreign Countries by Geographic Area Schedule of Revenue from External Customers Attributed to Foreign Countries by Geographic Area [Table Text Block] Cost method investments Cost Method Investments Other than temporary impairment losses, investments Other than Temporary Impairment Losses, Investments Gain (loss) from sale or redemption of available for sale securities Available-for-sale Securities, Gross Realized Gain (Loss) Proceeds from sale and maturity of marketable securities Proceeds from Sale and Maturity of Marketable Securities Other Intangible Assets, Net Intangible Assets Disclosure [Text Block] Restricted Stock Units (RSUs) and Performance Shares Restricted Stock Units (RSUs) and Performance Shares [Member] Restricted Stock Units (RSUs) and Performance Shares [Member] Unvested Restricted Stock Units Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number of Shares [Roll Forward] Unvested restricted stock units, beginning balance (shares) Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number Granted (shares) Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period Vested (shares) Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period Canceled/Forfeited (shares) Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Forfeited in Period Performance adjustment (shares) Share-based Compensation Arrangement By Share-based Payment Award, Equity Instruments Other Than Options, Adjustments In Period Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Performance Adjustment In Period Unvested restricted stock units, ending balance (shares) Weighted average grant date fair value per share Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Weighted Average Grant Date Fair Value [Roll Forward] 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Text Block] New Accounting Pronouncements or Change in Accounting Principle [Table] New Accounting Pronouncements or Change in Accounting Principle [Table] Scenario [Axis] Scenario [Axis] Scenario, Unspecified [Domain] Scenario, Unspecified [Domain] Previously Reported Scenario, Previously Reported [Member] Change in Presentation Reclassification Restatement Adjustment [Member] New Accounting Pronouncements or Change in Accounting Principle [Line Items] New Accounting Pronouncements or Change in Accounting Principle [Line Items] Subscription License and other Maintenance and subscription License and other Amortization of developed technology (1) Total cost of revenue Basis of Presentation Basis of Accounting, Policy [Policy Text Block] Recently Issued Accounting Standards New Accounting Pronouncements, Policy [Policy Text Block] Schedule of Calculation of Numerator and Denominator in Earnings Per Share Schedule of Earnings Per Share, Basic and Diluted [Table Text Block] Statement of Financial Position [Abstract] ASSETS Assets [Abstract] Current assets: Assets, Current [Abstract] Cash and cash equivalents Marketable securities Marketable Securities, Current Accounts receivable, net Accounts Receivable, Net, Current Prepaid expenses and other current assets Prepaid Expense and Other Assets, Current Total current assets Assets, Current Marketable securities Marketable Securities, Noncurrent Computer equipment, software, furniture and leasehold improvements, net Developed technologies, net Intangible Assets, Net (Excluding Goodwill) Goodwill Deferred income taxes, net Deferred Tax Assets, Net of Valuation Allowance, Noncurrent Other assets Other Assets, Noncurrent Total assets Assets LIABILITIES AND STOCKHOLDERS’ EQUITY Liabilities and Equity [Abstract] Current liabilities: Liabilities, Current [Abstract] Accounts payable Accounts Payable, Current Accrued compensation Employee-related Liabilities, Current Accrued income taxes Accrued Income Taxes, Current Deferred revenue Deferred Revenue, Current Current portion of long-term notes payable, net Notes Payable, Current Other accrued liabilities Other Accrued Liabilities, Current Total current liabilities Liabilities, Current Long-term deferred revenue Deferred Revenue, Noncurrent Long-term income taxes payable Accrued Income Taxes, Noncurrent Long-term deferred income taxes Deferred Tax Liabilities, Net, Noncurrent Long-term notes payable, net Notes Payable, Noncurrent Other liabilities Other Liabilities, Noncurrent Stockholders’ equity: Stockholders' Equity Attributable to Parent [Abstract] Common stock and additional paid-in capital Common Stocks, Including Additional Paid in Capital Accumulated other comprehensive loss Accumulated Other Comprehensive Income (Loss), Net of Tax Accumulated deficit Retained Earnings (Accumulated Deficit) Total stockholders’ equity Total liabilities and stockholders' equity Liabilities and Equity Property, Plant and Equipment Property, Plant and Equipment [Table Text Block] Deferred Compensation Compensation Related Costs, General [Text Block]