Accumulated Amortization Finite-Lived Intangible Assets, Accumulated Amortization Award Timing Predetermined Award Timing Predetermined [Flag] Change in unrealized gains (losses) on available-for-sale securities, tax OCI, Debt Securities, Available-for-Sale, Gain (Loss), after Adjustment, Tax Entity File Number Entity File Number Capital in Excess of Par Value Additional Paid-in Capital [Member] Tabular List, Table Tabular List [Table Text Block] Recent Accounting Pronouncements Not Yet Adopted New Accounting Pronouncements, Policy [Policy Text Block] Purchases of short-term investments Payments to Acquire Short-Term Investments Operating lease liabilities Increase (Decrease) in Operating Lease Liabilities Increase (Decrease) in Operating Lease Liabilities Proceeds from business divestiture, net of cash divested Proceeds from Divestiture of Businesses, Net of Cash Divested SOFR Secured Overnight Financing Rate (SOFR) [Member] Upfront products License [Member] Adjustment to Compensation: Adjustment to Compensation [Axis] Named Executive Officers, Footnote Named Executive Officers, Footnote [Text Block] Revenue Revenue from Contract with Customer [Text Block] Business Combination, Contingent Consideration [Table] Stock, Class of Stock [Table] Continuing Operations Continuing Operations [Member] Schedule of Cash Equivalents and Short-Term Investments Schedule of Cash and Cash Equivalents [Table Text Block] Adjustment to Compensation, Amount Adjustment to Compensation Amount Revenue percentage by product group Concentration Risk, Percentage Unamortized discount and issuance costs Debt Instrument, Unamortized Discount (Premium) and Debt Issuance Costs, Net Revenue, remaining performance obligation, percentage Revenue, Remaining Performance Obligation, Percentage Principles of Consolidation Consolidation, Policy [Policy Text Block] Stock-based compensation Share-Based Payment Arrangement, Noncash Expense Employee Stock Option Share-Based Payment Arrangement, Option [Member] Contract rights intangible Contractual Rights [Member] Deferred gains (losses), tax Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), before Reclassification, Tax Total Synopsys stockholders’ equity Equity, Attributable to Parent Measurement Frequency [Axis] Measurement Frequency [Axis] Debt Securities, Available-for-Sale [Table] Debt Securities, Available-for-Sale [Table] Other comprehensive income (loss): Other Comprehensive Income (Loss), Net of Tax [Abstract] Insider Trading Policies and Procedures [Line Items] Common stock, shares authorized (in shares) Common Stock, Shares Authorized Common stock issued for private placement (in shares) Stock Issued During Period, Shares, New Issues Fair Value, Measurements, Recurring Fair Value, Recurring [Member] LIABILITIES AND STOCKHOLDERS’ EQUITY Liabilities and Equity [Abstract] Fixed-rate 4.550% Senior Notes due on April 1, 2027 Senior Notes Due 2027 [Member] Senior Notes Due 2027 Cover [Abstract] Cover [Abstract] Cash equivalents, fair value Cash and Cash Equivalents, Fair Value Disclosure Discontinued Operations Disposal Groups, Including Discontinued Operations, Disclosure [Text Block] Maximum Maximum [Member] Less: Net income (loss) attributed to non-controlling interest and redeemable non-controlling interest Net Income (Loss) Attributable to Noncontrolling Interest Bridge Loan Bridge Loan [Member] Non-PEO NEO Average Total Compensation Amount Non-PEO NEO Average Total Compensation Amount Debt Instrument [Line Items] Debt Instrument [Line Items] Schedule of Share-based Compensation Arrangements by Share-based Payment Award [Table] Schedule of Share-Based Compensation Arrangements by Share-Based Payment Award [Table] Term Loan due 2028 (Tranche 2) Term Loan Due 2028 [Member] Term Loan Due 2028 Adjustment to Non-PEO NEO Compensation Footnote Adjustment to Non-PEO NEO Compensation Footnote [Text Block] Forgone Recovery due to Disqualification of Tax Benefits, Amount Forgone Recovery due to Disqualification of Tax Benefits, Amount Non-Rule 10b5-1 Arrangement Terminated Non-Rule 10b5-1 Arrangement Terminated [Flag] Income before income taxes Income before income taxes Income (Loss) from Continuing Operations before Income Taxes, Noncontrolling Interest Entity Shell Company Entity Shell Company Schedule of Long-term Debt Instruments [Table] Schedule of Long-Term Debt Instruments [Table] Discontinued Operations Discontinued Operations, Held-for-Sale or Disposed of by Sale [Member] Proceeds from sale of building Proceeds from Sale of Property, Plant, and Equipment Proceeds from debt, net of issuance costs Proceeds from Issuance of Debt Common stock issued, net of shares withheld for employee taxes Restricted Stock Issued And Stock Options Exercised, Value, Net Of Tax Withholdings Restricted Stock Issued And Stock Options Exercised, Value, Net Of Tax Withholdings Statement of Stockholders' Equity [Abstract] Statement of Stockholders' Equity [Abstract] Operating Segments Operating Segments [Member] Deferred gains (losses), net of tax of $1,789 and $5,332 for the three and six months ended April 30, 2026, respectively, and of $10,507 and $22,002 for each of the same periods in fiscal 2025, respectively Amount of  gains (losses) recognized in OCI on derivatives (effective portion) Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), before Reclassification, after Tax Less: Net income (loss) attributed to non-controlling interest and redeemable non-controlling interest Comprehensive Income (Loss), Net of Tax, Attributable to Noncontrolling Interest Award Timing MNPI Considered Award Timing MNPI Considered [Flag] Reclassification Adjustment Balance In Accumulated Other Comprehensive Income [Table] Reclassification out of Accumulated Other Comprehensive Income [Table] Stock Repurchase Program Treasury Stock [Text Block] Restructuring related liabilities Restructuring Reserve Continuing operations Net income from continuing operations attributed to Synopsys Income (Loss) from Continuing Operations, Net of Tax, Attributable to Parent Prepaid and other current assets: Prepaid Expense and Other Assets, Current [Abstract] Redemption of redeemable non-controlling interest Payments to Noncontrolling Interests Schedule of Stock Compensation Arrangements Share-Based Payment Arrangement, Expensed and Capitalized, Amount [Table Text Block] Operating lease liabilities Operating Lease, Liability, Current Property and equipment, net Disposal Group, Including Discontinued Operation, Property, Plant and Equipment, Current Bridge Commitment Bridge Commitment [Member] Bridge Commitment Document Fiscal Period Focus Document Fiscal Period Focus Award Timing Method Award Timing Method [Text Block] Continuing operations (in USD per share) Income (Loss) from Continuing Operations, Per Basic Share Award Type [Axis] Award Type [Axis] Long-term deferred revenue Contract with Customer, Liability, Noncurrent Cumulative currency translation adjustments Accumulated Foreign Currency Adjustment Attributable to Parent [Member] Hedging Relationship [Domain] Hedging Relationship [Domain] Schedule of Unaudited Pro Forma Information Business Combination, Pro Forma Information [Table Text Block] Trading Symbol Trading Symbol 2030 Lessee, Operating Lease, Liability, to be Paid, Year Four Acquisition of Ansys Business Combination [Policy Text Block] Entity Address, City or Town Entity Address, City or Town Non-PEO NEO Average Compensation Actually Paid Amount Non-PEO NEO Average Compensation Actually Paid Amount Income Statement Location [Domain] Statement of Income Location, Balance [Domain] Compensation Actually Paid vs. Other Measure Compensation Actually Paid vs. Other Measure [Text Block] Total purchase consideration Business Combination, Consideration Transferred Entity Emerging Growth Company Entity Emerging Growth Company 2029 Long-Term Debt, Maturity, Year Three Operating expenses Operating Expense [Member] Change in Fair Value as of Vesting Date of Prior Year Equity Awards Vested in Covered Year Change in Fair Value as of Vesting Date of Prior Year Equity Awards Vested in Covered Year [Member] Reduction of operating lease right-of-use assets Reduction of Operating Lease Right-of-Use Assets Reduction of Operating Lease Right-of-Use Assets Common stock, shares outstanding (in shares) Beginning balance (in shares) Ending balance (in shares) Common Stock, Shares, Outstanding Remainder of fiscal 2026 Lessor, Operating Lease, Payment to be Received, Remainder of Fiscal Year Allowance for credit losses Accounts Receivable, Credit Loss Expense (Reversal) Deferred revenue Disposal Group, Including Discontinued Operation, Deferred Revenue, Current Schedule of Disaggregation of Revenue Disaggregation of Revenue [Table Text Block] Accelerated Share Repurchases [Table] Accelerated Share Repurchases [Table] Accrued income taxes Accrued Income Taxes, Current Dividends or Other Earnings Paid on Equity Awards not Otherwise Reflected in Total Compensation for Covered Year Dividends or Other Earnings Paid on Equity Awards not Otherwise Reflected in Total Compensation for Covered Year [Member] Schedule of Estimated Future Amortization of Acquired Intangible Assets Schedule of Finite-Lived Intangible Assets, Future Amortization Expense [Table Text Block] Prepaid and other current assets Prepaid Expense and Other Assets, Current Fixed-rate 5.150% Senior Notes due on April 1, 2035 Senior Notes Due 2035 [Member] Senior Notes Due 2035 Implied interest rate Effective Interest Rate Debt Instrument, Interest Rate, Effective Percentage Entity Address, Postal Zip Code Entity Address, Postal Zip Code Restatement Determination Date Restatement Determination Date Provision for income taxes Provision for income taxes Income Tax Expense (Benefit) Borrowings, interest rate Debt Instrument, Basis Spread on Variable Rate Discontinued operations (in USD per share) Income (Loss) from Discontinued Operations and Disposal of Discontinued Operations, Net of Tax, Per Basic Share Pension Adjustments Service Cost Pension Adjustments Service Cost [Member] Fair values of derivative instruments designated as hedging instruments Designated as Hedging Instrument [Member] Fair Value Hierarchy and NAV [Axis] Fair Value Hierarchy and NAV [Axis] Hedging Relationship [Axis] Hedging Relationship [Axis] Total cash, cash equivalents and short-term investments Cash, Cash Equivalents, and Short-Term Investments Discontinued Operations and Disposal Groups [Abstract] Common stock issued, net of shares withheld for employee taxes (in shares) Restricted Stock Issued And Stock Options Exercised, Shares, Net Of Tax Withholdings Restricted Stock Issued And Stock Options Exercised, Shares, Net Of Tax Withholdings Other Income and Expenses [Abstract] Other Income and Expenses [Abstract] Restructuring Charges Restructuring and Related Activities Disclosure [Text Block] Compensation Actually Paid vs. Company Selected Measure Compensation Actually Paid vs. Company Selected Measure [Text Block] Income taxes Increase (Decrease) in Income Taxes Common stock issuance for private placement Sale of stock, net proceeds Proceeds from Issuance of Private Placement All Trading Arrangements All Trading Arrangements [Member] Equity Awards Adjustments, Footnote Equity Awards Adjustments, Footnote [Text Block] Total Shareholder Return Vs Peer Group Total Shareholder Return Vs Peer Group [Text Block] Working capital adjustments Disposal Group Including Discontinued Operation, Net Working Capital Adjustments Disposal Group Including Discontinued Operation, Net Working Capital Adjustments Commitments and Contingencies Disclosure [Abstract] Commitments and Contingencies Disclosure [Abstract] Schedule of Balance Sheets Components Schedule of Balance Sheet, Supplemental Disclosures [Table Text Block] Schedule of Balance Sheet, Supplemental Disclosures Net cash provided by operating activities Cash Provided by (Used in) Operating Activity, Including Discontinued Operation Debt instrument, term Debt Instrument, Term Contingent consideration receivable Disposal Group Including Discontinued Operation, Contingent Consideration Disposal Group Including Discontinued Operation, Contingent Consideration Software Integrity Business Software Integrity Business [Member] Software Integrity Business Preferred stock, par value (in USD per share) Preferred Stock, Par or Stated Value Per Share Schedule of Lease Term and Discount Rate Information Lessee, Lease Term and Discount Rate [Table Text Block] Lessee, Lease Term and Discount Rate [Table Text Block] Equity Valuation Assumption Difference, Footnote Equity Valuation Assumption Difference, Footnote [Text Block] Proceeds from sales of short-term investments Proceeds from Sale of Short-Term Investments PEO Total Compensation Amount PEO Total Compensation Amount Long-term Debt, Type [Axis] Long-Term Debt, Type [Axis] Money market funds Money market funds Money Market Funds [Member] Fair values of derivative instruments, liabilities Derivative Liability, Subject to Master Netting Arrangement, before Offset Remainder of fiscal 2026 Finite-Lived Intangible Asset, Expected Amortization, Remainder of Fiscal Year Foreign Line of Credit Foreign Line of Credit [Member] Equity Components [Axis] Equity Components [Axis] Adjustments to redeemable non-controlling interest Noncontrolling Interest, Change in Redemption Value Maintenance and service Technology Service [Member] Non-Rule 10b5-1 Arrangement Adopted Non-Rule 10b5-1 Arrangement Adopted [Flag] Products Product [Member] Number of reportable segments Number of Reportable Segments Deferred compensation plan Gains (losses) on assets related to deferred compensation plan Gain (Loss) On Assets Related To Deferred Compensation Plan Gain or (loss) on assets related to deferred compensation plan. Entity Address, State or Province Entity Address, State or Province Total current liabilities Liabilities, Current Individual: Individual [Axis] Research and development expense Research and Development Expense [Member] Forgone Recovery, Explanation of Impracticability Forgone Recovery, Explanation of Impracticability [Text Block] Entity Interactive Data Current Entity Interactive Data Current Financial Assets and Liabilities Schedule Of Financial Assets And Liabilities [Text Block] A schedule of financial assets and liabilities which may include cash, cash equivalents, investments, and derivative assets and liabilities. Disaggregation of Revenue [Table] Disaggregation of Revenue [Table] Goodwill Disposal Group, Including Discontinued Operation, Goodwill, Current Period for hedge balance in OCI to be reclassified to statement of operations (in months) Derivative Instruments, Gain (Loss) Reclassification from Accumulated OCI to Income, Estimate of Time to Transfer Other long-term assets Other Assets, Noncurrent Interest payable Interest Payable, Current Entity Central Index Key Entity Central Index Key PEO Name PEO Name Schedule of Future Principal Payments of Debt Schedule of Maturities of Long-Term Debt [Table Text Block] Prior Year End Fair Value of Equity Awards Granted in Any Prior Year that Fail to Meet Applicable Vesting Conditions During Covered Year Prior Year End Fair Value of Equity Awards Granted in Any Prior Year that Fail to Meet Applicable Vesting Conditions During Covered Year [Member] Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] Outstanding Aggregate Erroneous Compensation Amount Outstanding Aggregate Erroneous Compensation Amount Schedule of Segment Reporting Information, by Segment [Table] Schedule of Segment Reporting Information, by Segment [Table] Deferred revenue Contract with Customer, Liability, Current Schedule of Fair Values of Foreign Currency Derivative Instrument Designated and Non-Designated as Hedging Instruments in Balance Sheet Schedule of Derivative Instruments in Statement of Financial Position, Fair Value [Table Text Block] Prepaid and other current assets Increase (Decrease) in Prepaid Expense and Other Assets Exercise Price Award Exercise Price Entity Filer Category Entity Filer Category Net income (loss) attributed to Synopsys: Income Amounts Attributable to Parent, Disclosures [Abstract] Open Market Purchases Open Market Purchases [Member] Open Market Purchases Statutory federal income tax rate Effective Income Tax Rate Reconciliation, at Federal Statutory Income Tax Rate, Percent Pre-tax gain (loss) Discontinued Operation, Gain (Loss) from Disposal of Discontinued Operation, before Income Tax Long-term debt Long-Term Debt, Excluding Current Maturities Balance Sheet Location [Axis] Statement of Financial Position Location, Balance [Axis] 2029 Finite-Lived Intangible Asset, Expected Amortization, Year Three Gross Carrying Amount Finite-Lived Intangible Assets, Gross Vesting Date Fair Value of Equity Awards Granted and Vested in Covered Year Vesting Date Fair Value of Equity Awards Granted and Vested in Covered Year [Member] Entity Address, Address Line One Entity Address, Address Line One Research and development Research and Development Expense Accumulated Other Comprehensive Income (Loss) AOCI Attributable to Parent [Member] Business Combination, Asset Acquisition, Transaction between Entities under Common Control, and Joint Venture Formation [Abstract] Gains (losses) recorded in other income (expense), net Gain (Loss) on Foreign Currency Derivative Instruments Not Designated as Hedging Instruments Disposal Groups, Including Discontinued Operations [Line Items] Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] Fair Value as of Grant Date Award Grant Date Fair Value Reclassification adjustment on deferred (gains) losses included in net income, tax Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), Reclassification, Tax Disposal Group, Held-for-Sale, Not Discontinued Operations Disposal Group, Held-for-Sale, Not Discontinued Operations [Member] Schedule of Components of Other Income (Expense), Net Schedule of Other Nonoperating Income (Expense) [Table Text Block] Schedule of Borrowings Schedule of Long-Term Debt Instruments [Table Text Block] Derivative Instruments and Hedging Activities Disclosures [Table] Derivative Instruments and Hedging Activities Disclosures [Table] Dilutive effect of common share equivalents from equity-based compensation (in shares) Incremental Common Shares Attributable to Dilutive Effect of Share-Based Payment Arrangements Cost of revenue and operating expenses Costs and Expenses Unrecognized stock-based compensation expense Share-Based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Amount Document Quarterly Report Document Quarterly Report Deferred income taxes Deferred Income Taxes and Tax Credits Long-term debt, fair value Long-Term Debt, Fair Value Changed Peer Group, Footnote Changed Peer Group, Footnote [Text Block] 2028 Lessee, Operating Lease, Liability, to be Paid, Year Two Adjustment To PEO Compensation, Footnote Adjustment To PEO Compensation, Footnote [Text Block] Title Trading Arrangement, Individual Title Peer Group Total Shareholder Return Amount Peer Group Total Shareholder Return Amount Payment to acquire business Payments to Acquire Businesses, Gross Non-PEO NEO Non-PEO NEO [Member] Interest income Interest Income, Other Sale of Stock [Axis] Sale of Stock [Axis] Gross Unrealized Gains Debt Securities, Available-for-Sale, Accumulated Gross Unrealized Gain, before Tax Award Type [Domain] Award Type [Domain] 2027 Lessee, Operating Lease, Liability, to be Paid, Year One Loss recorded in OCI Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), before Reclassification and Tax Non-controlling interest Equity, Attributable to Noncontrolling Interest Equity Awards Adjustments Equity Awards Adjustments [Member] Other Other Noncash Income (Expense) Pension Benefits Adjustments, Footnote Pension Benefits Adjustments, Footnote [Text Block] Disaggregation of Revenue [Line Items] Disaggregation of Revenue [Line Items] Compensation Amount Outstanding Recovery Compensation Amount Debt Instrument, Name [Domain] Debt Instrument, Name [Domain] Taxes [Line Items] Taxes [Line Items] Taxes [Line Items] Recovery of Erroneously Awarded Compensation Disclosure [Line Items] Contract with customer, liability, revenue recognized Contract with Customer, Liability, Revenue Recognized China CHINA MNPI Disclosure Timed for Compensation Value MNPI Disclosure Timed for Compensation Value [Flag] 1-5 years Debt Securities, Available-for-Sale, Amortized Cost, Maturity, Allocated and Single Maturity Date, after Year One Through Five ESPP Employee Stock [Member] Revenue: Revenues [Abstract] Accumulated other comprehensive loss Accumulated Other Comprehensive Income (Loss), Net of Tax Sales and marketing Selling and Marketing Expense 2027 Long-Term Debt, Maturity, Year One Financial Instruments [Domain] Financial Instruments [Domain] Change in unrealized gains (losses) on available-for-sale securities, net of tax of $0 for periods presented OCI, Debt Securities, Available-for-Sale, Gain (Loss), after Adjustment and Tax Accumulated Other Comprehensive Income (Loss), Net of Tax [Abstract] Accumulated Other Comprehensive Income (Loss), Net of Tax [Abstract] Aggregate Pension Adjustments Service Cost Aggregate Pension Adjustments Service Cost [Member] Reclassification adjustment on deferred (gains) losses included in net income, net of tax of $(1,350) and $(2,003) for the three and six months ended April 30, 2026, respectively, and of $(783) and $(2,186) for each of the same periods in fiscal 2025, respectively Amount of gains (losses) reclassified from OCI (effective portion) Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), Reclassification, after Tax Inventories Inventory, Net Finite-Lived Intangible Assets by Major Class [Axis] Finite-Lived Intangible Assets by Major Class [Axis] Minimum Minimum [Member] Adjustments Goodwill, Measurement Period Adjustment Company Selected Measure Name Company Selected Measure Name Pro forma net income Business Combination, Pro Forma Information, Pro Forma Income (Loss), after Tax Transaction costs incurred Disposal Group, Including Discontinued Operation, Transaction Costs Disposal Group, Including Discontinued Operation, Transaction Costs Senior Notes, Bridge Commitment Letter, Term Loan and Revolving Credit Facilities Debt Disclosure [Text Block] Loss on sale of strategic investments Loss on sale of strategic investments Gain (Loss) on Sale of Investments Aggregate Available Trading Arrangement, Securities Aggregate Available Amount Accounts payable Accounts Payable, Current Cash paid for amounts included in the measurement of operating lease liabilities Operating Lease, Payments Stock Appreciation Rights (SARs) Stock Appreciation Rights (SARs) [Member] Volatility, minimum Share-Based Compensation Arrangement by Share-Based Payment Award, Fair Value Assumptions, Expected Volatility Rate, Minimum Goodwill [Roll Forward] Goodwill [Roll Forward] Contingencies Commitments and Contingencies Disclosure [Text Block] Estimated potential decrease in underlying unrecognized tax benefits Decrease in Unrecognized Tax Benefits is Reasonably Possible Other long-term assets: Other Assets, Noncurrent [Abstract] Diluted (in shares) Weighted average common shares for diluted net income per share (in shares) Weighted Average Number of Shares Outstanding, Diluted Shipments period using hedges (in months) Derivative, Maximum Shipment Period For Entry Into Foreign Currency Forward Contract Derivative, Maximum Shipment Period For Entry Into Foreign Currency Forward Contract Non-GAAP Measure Description Non-GAAP Measure Description [Text Block] Entity Small Business Entity Small Business Sales and marketing expense Selling and Marketing Expense [Member] Income Tax Disclosure [Abstract] Income Tax Disclosure [Abstract] Preferred stock, shares outstanding (in shares) Preferred Stock, Shares Outstanding Document Transition Report Document Transition Report 1-5 years Debt Securities, Available-for-Sale, Fair Value, Maturity, Allocated and Single Maturity Date, after Year One Through Five Underlying Securities Award Underlying Securities Amount Equity Component [Domain] Equity Component [Domain] Financial Assets and Liabilities [Table] Financial Assets And Liabilities [Table] Financial Assets and Liabilities [Table] Document Period End Date Document Period End Date Cash and Cash Equivalents [Domain] Cash and Cash Equivalents [Domain] Income Taxes Income Tax Disclosure [Text Block] Awards Close in Time to MNPI Disclosures, Table Awards Close in Time to MNPI Disclosures [Table Text Block] Total stockholders’ equity Beginning balance Ending balance Total stockholders’ equity Total Equity, Including Portion Attributable to Noncontrolling Interest Purchases of treasury stock (in USD per share) Shares Acquired, Average Cost Per Share Fixed-rate 4.650% Senior Notes due on April 1, 2028 Senior Notes Due 2028 [Member] Senior Notes Due 2028 Document Type Document Type Significant Unobservable  Inputs (Level 3) Fair Value, Inputs, Level 3 [Member] Net Income (Loss) Per Share Earnings Per Share [Text Block] Name Outstanding Recovery, Individual Name Capital in excess of par value Additional Paid in Capital Product and Service [Axis] Product and Service [Axis] Variable lease expense Variable Lease, Cost Total revenue Revenues Revenue Revenue from Contract with Customer, Excluding Assessed Tax Ansys Ansys Product Group [Member] Ansys Product Group Revolving Credit Agreement Revolving Credit Agreement [Member] Revolving Credit Agreement Total current assets Assets, Current Statistical Measurement [Axis] Statistical Measurement [Axis] Stock repurchase program authorized amount Share Repurchase Program, Authorized, Amount Accrued liabilities Accrued Liabilities [Member] Aggregate Erroneous Compensation Amount Aggregate Erroneous Compensation Amount Disposal Group Name [Axis] Disposal Group Name [Axis] Intrinsic value of awards exercised Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Exercises in Period, Intrinsic Value Payments for taxes related to net share settlement of equity awards Payment, Tax Withholding, Share-Based Payment Arrangement Peer Group Issuers, Footnote Peer Group Issuers, Footnote [Text Block] Derivative maturity period Derivative, Term of Contract Share Repurchase Program [Domain] Share Repurchase Program [Domain] Schedule of Reconciliation of Operating Income from Segments to Consolidation Reconciliation of Operating Profit (Loss) from Segments to Consolidated [Table Text Block] Current liabilities: Liabilities, Current [Abstract] Schedule of Location of the Amounts of Gains and Losses on Derivative Instrument Fair Values for Designated Hedging Instruments, Net of Tax Derivative Instruments, Gain (Loss) [Table Text Block] Total operating expenses Operating expenses Operating Expenses Business acquisition, share price (in USD per share) Business Combination, Price Per Share Risk free interest rate, minimum Share-Based Compensation Arrangement by Share-Based Payment Award, Fair Value Assumptions, Risk Free Interest Rate, Minimum Amount outstanding Long-Term Line of Credit Quoted Prices in  Active Markets for Identical Assets (Level 1) Fair Value, Inputs, Level 1 [Member] Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items] Share-Based Payment Arrangement, Expensed and Capitalized, Amount [Line Items] Diluted net income per share (in USD per share) Earnings Per Share, Diluted Accounts receivable, net Accounts Receivable, after Allowance for Credit Loss, Current Reclassification out of Accumulated Other Comprehensive Income [Axis] Reclassification out of Accumulated Other Comprehensive Income [Axis] Sale of stock, number of shares of common stock issued (in shares) Sale of Stock, Number of Shares Issued in Transaction Time-based products License and Maintenance [Member] Treasury stock, shares (in shares) Treasury Stock, Common, Shares Consolidation Items [Domain] Consolidation Items [Domain] Loss from discontinued operations, net of income taxes Income (Loss) from Discontinued Operations, Net of Tax, Including Portion Attributable to Noncontrolling Interest Schedule of Share-Based Payment Award, Restricted Stock Units, Valuation Assumptions Schedule of Share-Based Payment Award, Restricted Stock Units, Valuation Assumptions [Table Text Block] Schedule of Share-Based Payment Award, Restricted Stock Units, Valuation Assumptions Gross margin Gross Profit Less: Imputed interest Lessee, Operating Lease, Liability, Undiscounted Excess Amount 2028 Finite-Lived Intangible Asset, Expected Amortization, Year Two Senior Notes and Line of Credit Senior Notes And Line Of Credit [Member] Senior Notes And Line Of Credit Current assets held for sale Total current assets held for sale Disposal Group, Including Discontinued Operation, Assets, Current Total Total Long-Term Debt, Gross Net income Net Income (Loss), Including Portion Attributable to Noncontrolling Interest, Separately Stated Net Income (Loss), Including Portion Attributable to Noncontrolling Interest, Separately Stated Payroll and related benefits Employee-related Liabilities, Current Total future minimum lease payments Lessee, Operating Lease, Liability, to be Paid EDA Electronic Design Automation [Member] Electronic Design Automation [Member] Capitalized contract cost, current Capitalized Contract Cost, Net, Current Korea KOREA, REPUBLIC OF Expiration Date Trading Arrangement Expiration Date Others Other Investments [Member] Property and equipment, net Property, Plant and Equipment, Net Restructuring charges Restructuring charges Restructuring Charges Compensation Actually Paid vs. Net Income Compensation Actually Paid vs. Net Income [Text Block] Accounts receivable Increase (Decrease) in Accounts Receivable Other Debt Instruments Other Debt Instruments [Member] Other Debt Instruments Restructuring Cost [Table] Restructuring Cost [Table] Entity Current Reporting Status Entity Current Reporting Status Awards Close in Time to MNPI Disclosures Awards Close in Time to MNPI Disclosures [Table] 1 year or less Debt Securities, Available-for-Sale, Amortized Cost, Maturity, Allocated 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Loss Finite-Lived Intangible Assets, Major Class Name [Domain] Finite-Lived Intangible Assets, Major Class Name [Domain] Accounts payable and accrued liabilities: Derivative Liability Reclassification out of Accumulated Other Comprehensive Income [Domain] Reclassification out of Accumulated Other Comprehensive Income [Domain] Equity Awards Adjustments, Excluding Value Reported in Compensation Table Equity Awards Adjustments, Excluding Value Reported in the Compensation Table [Member] Interest rate contracts Interest Rate Contract [Member] Common stock issued for prior acquisition Stock Issued During Period, Value, Acquisitions Anti-dilutive employee stock-based awards excluded (in shares) Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount Fair Value, by Balance Sheet Grouping [Table] Fair Value, by Balance Sheet Grouping [Table] Accounts payable and accrued liabilities Total Accounts Payable and Accrued Liabilities, Current 2028 Long-Term Debt, Maturity, Year Two Leases Lessee, Operating Leases [Text Block] Net cash provided by (used in) financing activities Cash Provided by (Used in) Financing Activity, Including Discontinued Operation Measure: Measure [Axis] Net fair value Derivative, Fair Value, Net Purchase of equity forward contract Payments for Repurchase of Other Equity Remaining amount available for future repurchases Share Repurchase Program, Remaining Authorized, Amount Cost of revenue Cost of Product and Service Sold Core/developed technology Developed And Core Technology [Member] Developed And Core Technology [Member] Disposal Group Classification [Domain] Disposal Group Classification [Domain] Schedule of Effect of Amounts Reclassified out of Each Component of Accumulated Other Comprehensive Income (Loss) into Net Income Reclassification out of Accumulated Other Comprehensive Income [Table Text Block] Prepaid and other assets Disposal Group, Including Discontinued Operation, Prepaid and Other Assets, Current Pay vs Performance Disclosure, Table Pay vs Performance [Table Text Block] Forgone Recovery due to Violation of Home Country Law, Amount Forgone Recovery due to Violation of Home Country Law, Amount Risk-free interest rate Share-Based Compensation Arrangement by Share-Based Payment Award, Fair Value Assumptions, Risk Free Interest Rate Cost of maintenance and service Cost Of Maintenance And Services [Member] Cost Of Maintenance And Services [Member] Amortization of bridge financing costs/debt issuance costs Amortization of Debt Issuance Costs Entity Tax Identification Number Entity Tax Identification Number Capitalized contract cost, noncurrent Capitalized Contract Cost, Net, Noncurrent Foreign Exchange Forward, Hedge of Non-Functional Currency Foreign Currency Hedge, International Revenues And Expenses [Member] Foreign Currency Hedge, International Revenues And Expenses Unsecured Uncommitted Incremental Revolving Loan Facility Unsecured Uncommitted Incremental Revolving Loan Facility 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