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Company Entity Emerging Growth Company Senior Notes Senior Notes [Member] Unrealized Losses Available-for-sale Securities, Accumulated Gross Unrealized Loss, before Tax Lease liabilities Current portion of lease liabilities Operating Lease, Liability, Current Stock-based compensation Total stock-based compensation expense Share-based Payment Arrangement, Noncash Expense Company's basic and diluted earnings per share Schedule of Earnings Per Share, Basic and Diluted [Table Text Block] Derivative [Table] Derivative [Table] Services Services Gross Profit Services gross profit. Computer software Software Development [Member] Income Taxes Income Tax, Policy [Policy Text Block] Accrued employee compensation Accrued employee compensation Employee-related Liabilities, Current 2021 (remainder of fiscal year) Lessee, Operating Lease, Liability, Payments, Remainder of Fiscal Year Prepaid expenses Prepaid Expense, Noncurrent Level 2 Fair Value, Inputs, Level 2 [Member] Income Taxes Income Tax Disclosure [Text Block] Antidilutive Securities Excluded From Computation Of Earnings Per Share By Antidilutive Securities [Axis] Antidilutive Securities [Axis] Deferred revenue Increase (Decrease) in Deferred Revenue Concentration Risk Type [Axis] Concentration Risk Type [Axis] Schedule of Valuation Assumptions Using Monte Carlo Simulation Model Schedule Of Share-based Payment Award, Equity Instruments Other Than Options, Valuation Assumptions [Table Text Block] Schedule of Share-based Payment Award, Equity Instruments Other Than Options, Valuation Assumptions [Table Text Block] U.S. Government agency securities US Government Agencies Debt Securities [Member] Unbilled accounts receivable, net Contract with Customer, Asset, Net, Noncurrent Unrecognized compensation cost, adjusted for estimated forfeitures Share-based Payment Arrangement, Nonvested Award, Cost [Table Text Block] Number of customers, concentration of credit risk Number of Customers Concentration Of Credit Risk Number of Customers Concentration Of Credit Risk LIABILITIES AND STOCKHOLDERS’ EQUITY Liabilities and Equity [Abstract] Other assets Other assets Other Assets, Noncurrent CASH FLOWS FROM FINANCING ACTIVITIES: Net Cash Provided by (Used in) Financing Activities [Abstract] Total other comprehensive income (loss) Other Comprehensive Income (Loss), Net of Tax Derivative Contract [Domain] Derivative Contract [Domain] Organization, Consolidation and Presentation of Financial Statements [Abstract] Organization, Consolidation and Presentation of Financial Statements [Abstract] Average expected volatility of the peer companies in the S&P Index Share-Based Compensation Arrangement By Share-Based Payment Award, Fair Value Assumptions, Expected Volatility Rate Of Peer Companies In Index Share-Based Compensation Arrangement By Share-Based Payment Award, Fair Value Assumptions, Expected Volatility Rate Of Peer Companies In Index Order backlog Order or Production Backlog [Member] Net carrying amount Long-term Debt 2021 (remainder of fiscal year) Finite-Lived Intangible Assets, Amortization Expense, Remainder of Fiscal Year 2024 Finite-Lived Intangible Assets, Amortization Expense, Year Four Vested and expected to vest as of January 31, 2020 (in dollars per share) Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested and Expected to Vest, Outstanding, Weighted Average Exercise Price Fair Value, Measurements, Fair Value Hierarchy [Domain] Fair Value Hierarchy and NAV [Domain] Purchases of property and equipment Payments to Acquire Property, Plant, and Equipment Company Nature of Operations [Policy Text Block] Nature of operations. 2025 Lessee, Operating Lease, Liability, Payments, Due Year Five Aggregate intrinsic value, Nonvested Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Aggregate Intrinsic Value, Nonvested Long-term investments: Available-for-sale Securities, Noncurrent Contract with Customer, Asset and Liability Contract with Customer, Asset and Liability [Table Text Block] Changes in fair value of strategic investments Unrealized Gain (Loss) on Investments Other current liabilities Other Liabilities, Current Net changes to credit losses Accounts Receivable, Credit Loss Expense (Reversal) Operating lease assets Increase (Decrease) In Operating Lease, Right-Of-Use Asset Increase (Decrease) In Operating Lease, Right-Of-Use Asset Weighted Average Expected Recognition Period Share-based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Period for Recognition Additional paid-in capital Additional Paid-in Capital [Member] Revenue Revenue from Contract with Customer [Text Block] Changes to allowance for credit losses and revenue reserves Net changes to revenue reserves Accounts Receivable, Net Change To Revenue Reserves Accounts Receivable, Net Change To Revenue Reserves Prepaid expenses Prepaid Expense, Current Repurchase and retirement of common stock Stock Repurchased and Retired During Period, Value Stock-Based Compensation Share-based Payment Arrangement [Policy Text Block] Accounts Receivable Accounts Receivable [Member] United States UNITED STATES Stated interest rate Debt Instrument, Interest Rate, Stated Percentage Entity Address, Address Line One Entity Address, Address Line One Municipal Bonds Municipal Bonds [Member] Stockholders' Equity and Stock-based Compensation [Abstract] Stockholders' Equity and Stock-based Compensation [Abstract] Stockholders' equity and stock-based compensation. Total property and equipment Property, Plant and Equipment, Gross Contract costs, current Contract costs Capitalized Contract Cost, Net, Current Finite-Lived Intangible Assets by Major Class [Axis] Finite-Lived Intangible Assets by Major Class [Axis] Total gross profit Gross Profit Geographical [Domain] Geographical [Domain] Entity Address, State or Province Entity Address, State or Province Income Statement Location [Axis] Income Statement Location [Axis] Less than 12 Months Available For Sale Securities, Debt Maturities Current Available For Sale Securities, Debt Maturities Current Customer Concentration Risk Customer Concentration Risk [Member] Investments Classified by Contractual Maturity Date Investments Classified by Contractual Maturity Date [Table Text Block] Weighted Average Weighted Average [Member] Tranche One Share-based Payment Arrangement, Tranche One [Member] Net cash provided by (used in) investing activities Net Cash Provided by (Used in) Investing Activities Fair Value Measurements, Recurring and Nonrecurring [Table] Fair Value, Recurring and Nonrecurring [Table] Tranche two Share-based Payment Arrangement, Tranche Two [Member] Capitalized cloud software development costs Payments to Develop Software General and administrative General and Administrative Expense Accounts payable Accounts Payable, Current Share-based compensation expense Share Based Compensation Expense, Performance Based Awards Share Based Compensation Expense, Performance Based Awards recognized in period Other current liabilities Accrued Liabilities, Current Entity Interactive Data Current Entity Interactive Data Current Shares issued (in shares) Common Stock, Shares, Issued Entity Common Stock, Shares Outstanding Entity Common Stock, Shares Outstanding Common stock, par value (in dollars per share) Common Stock, Par or Stated Value Per Share Accounts receivable Accounts Receivable, before Allowance for Credit Loss Antidilutive Securities Excluded From Computation Of Earnings Per Share [Line Items] Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items] Balance at beginning of period (in dollars per share) Balance at end of period (in dollars per share) Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Weighted Average Grant Date Fair Value Adjustments to reconcile net income (loss) to net cash provided by (used in) operating activities: Adjustments, Noncash Items, to Reconcile Net Income (Loss) to Cash Provided by (Used in) Operating Activities [Abstract] Entity Incorporation, State or Country Code Entity Incorporation, State or Country Code Net Income (Loss) Per Share Earnings Per Share [Text Block] Shares available under stock plans (in shares) Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Available for Grant Conversion price (in dollars per share) Debt Instrument, Convertible, Conversion Price Less accumulated depreciation Accumulated Depreciation, Depletion and Amortization, Property, Plant, and Equipment Equity Award [Domain] Award Type [Domain] On or after October 15, 2024 Debt Instrument, Redemption, Period Two [Member] Unrealized Gains Available-for-sale Securities, Accumulated Gross Unrealized Gain, before Tax Commitments and Contingencies Commitments and Contingencies Disclosure [Text Block] Foreign currency translation adjustments Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Gain (Loss) Arising During Period, Net of Tax Award vesting percentage Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Rights, Percentage Aggregate intrinsic value, Expected to vest Share-Based Compensation Arrangement By Share-Based Payment Award, Equity Instruments Other Than Options, Aggregate Intrinsic Value, Expected To Vest Share-Based Compensation Arrangement By Share-Based Payment Award, Equity Instruments Other Than Options, Aggregate Intrinsic Value, Expected To Vest Vacation Accrued Vacation, Current Revenue Benchmark Revenue Benchmark [Member] Exercisable as of April 30, 2021 Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested and Expected to Vest, Exercisable, Weighted Average Remaining Contractual Term Restricted Stock Units (RSUs) Stock Awards Restricted Stock Units (RSUs) [Member] Research and development Research and Development Expense [Member] Software Development Costs Research, Development, and Computer Software, Policy [Policy Text Block] Effective income tax rate, continuing operations Effective Income Tax Rate Reconciliation, Percent Total Long-Lived Assets, Property, Plant And Equipment, Net, Including Intangibles And Goodwill Long-Lived Assets, Property, Plant And Equipment, Net, Including Intangibles And Goodwill Disaggregation of Revenue [Table] Disaggregation of Revenue [Table] License License Gross Profit License gross profit. Purchased software Capitalized Computer Software, Gross Fair value of debt Long-term Debt, Fair Value Other Current Liabilities Other Current Liabilities [Table Text Block] Cost of revenue: Cost of Revenue [Abstract] Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] Total liabilities Liabilities Unbilled accounts receivable Increase (Decrease) in Contract with Customer, Asset Reclassification Reclassification, Policy [Policy Text Block] Common stock Common Stock, Value, Issued Impairment loss Strategic Investment, Impairment Loss Strategic Investment, Impairment Loss Maturities of available-for-sale securities Proceeds from Maturities, Prepayments and Calls of Debt Securities, Available-for-sale Sales and marketing Selling and Marketing Expense [Member] Deferred income tax Deferred Income Taxes and Tax Credits Research and development Research and Development Expense Vesting [Domain] Vesting [Domain] Statement of Comprehensive Income [Abstract] Statement of Comprehensive Income [Abstract] Denominator: Weighted Average Number of Shares Outstanding, Basic [Abstract] Cost of license revenue Cos Of License Revenues [Member] Cos Of License Revenues Basic (in shares) Weighted Average Number of Shares Outstanding, Basic Operating lease assets Decrease in operating lease assets Operating Lease, Right-of-Use Asset Share-based Compensation Arrangement by Share-based Payment Award, Options, Additional Disclosures [Abstract] Share-based Compensation Arrangement by Share-based Payment Award, Options, Additional Disclosures [Abstract] Equity Components [Axis] Equity Components [Axis] Weighted Average Grant Date Fair Value Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Weighted Average Grant Date Fair Value [Abstract] Equipment and machinery Machinery and Equipment, Gross Cash and Cash Equivalents [Domain] Cash and Cash Equivalents [Domain] Total stockholders’ equity Beginning balance Ending balance Stockholders' Equity Attributable to Parent Amortization expense Amortization of Intangible Assets Concentration Risk Type [Domain] Concentration Risk Type [Domain] Finite-Lived Intangible Assets, Major Class Name [Domain] Finite-Lived Intangible Assets, Major Class Name [Domain] Other liabilities Increase (Decrease) in Other Operating Liabilities SUPPLEMENTAL DISCLOSURES OF CASH FLOW INFORMATION: Supplemental Cash Flow Elements [Abstract] Canceled (in shares) Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Forfeited in Period Deferred revenue, net Contract with Customer, Liability, Current Concentration Risk Benchmark [Axis] Concentration Risk Benchmark [Axis] Amortization of premium (accretion of discount) on available-for-sale securities, net Accretion (Amortization) of Discounts and Premiums, Investments Convertible Debt Convertible Debt [Member] Acquired technology Technology-Based Intangible Assets [Member] Fair Value of Financial Instruments Fair Value Disclosures [Text Block] Finite-Lived Intangible Assets [Line Items] Finite-Lived Intangible Assets [Line Items] Components of Lease Cost Lease, Cost [Table Text Block] Unbilled accounts receivable, net Contract with Customer, Asset, Net, Current Total EMEA EMEA EMEA [Member] Cost Finite-Lived Intangible Assets, Gross Cash paid for interest Interest Paid, Excluding Capitalized Interest, Operating Activities Debt Instrument, Redemption, Period [Axis] Debt Instrument, Redemption, Period [Axis] Allowance for credit losses and revenue reserves Balance as of July 31, 2020 Balance as of April 30, 2021 Accounts Receivable, Allowance for Credit Loss Cash equivalents: Cash and Cash Equivalents, Fair Value Disclosure Security Exchange Name Security Exchange Name Antidilutive securities excluded from EPS (in shares) Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount Depreciation Depreciation Supplemental Cash And Non-Cash Information Supplemental Cash And Non-Cash Information, Lessee [Table Text Block] Supplemental Cash And Non-Cash Information, Lessee Long-term Debt, Type [Axis] Long-term Debt, Type [Axis] Additional paid-in capital Additional Paid in Capital, Common Stock Aggregate intrinsic value, Vested Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Aggregate Intrinsic Value, Vested Net cash provided by (used in) operating activities Net Cash Provided by (Used in) Operating Activities Number of Stock Awards Outstanding Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number of Shares [Roll Forward] Schedule of Available-for-sale Securities Reconciliation Schedule of Available-for-sale Securities Reconciliation [Table Text Block] Equity Component [Domain] Equity Component [Domain] Expected term (in years) Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Expected Term Revenue, performance obligations, timing Revenue, Performance Obligation, Description of Timing Document Transition Report Document Transition Report Stock options Stock options Share-based Payment Arrangement, Option [Member] TSR PSUs Total Shareholder Return Performance Shares (TSR PSUs) [Member] Total Shareholder Return Performance Shares (TSR PSUs) [Member] Subscription and support Subscription And Support Gross Profit Subscription And Support Gross Profit Debt issuance costs Debt Issuance Costs, Net Short-term investments Short-term Investments Authorized repurchase amount Stock Repurchase Program, Authorized Amount Allowance for Doubtful Accounts Receivable [Roll Forward] Accounts Receivable, Allowance for Credit Loss [Roll Forward] Income Statement [Abstract] Income Statement [Abstract]