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Collaborative Arrangement Know How Royalty Rate Resets Know-how royalty rate resets (as a percent) The limit of annual employee contributions to the plan, as a percentage of compensation. Defined Contribution Plan Employee Contribution Limit As Percentage Of Compensation Employee contribution limit as a percentage of their eligible compensation Distribution of Mural Oncology plc Distribution of Business Distribution of Business Lease agreement, commencement date. Lease Agreement Commencement Date Lease, commencement date Supplemental Cash Flow Information [Abstract] SUPPLEMENTAL CASH FLOW DISCLOSURE: Base premises. 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Income Taxes Payable On Repatriation Of Unremitted Earnings Income taxes payable on repatriation of unremitted earnings Investments Classified by Contractual Maturity Date [Table Text Block] Schedule of Contractual Maturities of Available-for-Sale and Held-to-Maturity Securities AmerisourceBergen Corporation. Amerisource Bergen Corporation [Member] AmerisourceBergen Significant Accounting Policies [Text Block] Summary of Significant Accounting Policies Lease liability Operating Lease, Liability, Total Operating Lease, Liability Total operating lease liabilities Scenario Forecast Forecast [Member] Forecast Article or substance produced by labor or machinery, and royalties. Manufactured Product And Royalty [Member] Manufacturing and royalty revenues Share-Based Compensation Arrangement by Share-Based Payment Award, Fair Value Assumptions, Expected Volatility Rate, Minimum Expected stock volatility, minimum (as a percent) US Government Agencies Debt Securities [Member] U.S. government and agency debt securities Disaggregation of Revenue [Abstract] REVENUES: Equity Component [Domain] Equity Component Defined Contribution Plan, Cost Employer contribution Stock Options Land [Member] Land Royalty revenue recognized Royalty revenue recognized Other Nonoperating Income (Expense) [Member] Other Income (Expense), Net Amortization of Debt Issuance Costs and Discounts, Total Amortization of Debt Issuance Costs and Discounts Amortization of offering costs and discount Share-Based Compensation Arrangement by Share-Based Payment Award, Fair Value Assumptions and Methodology [Abstract] Weighted-average assumptions Adjustments to reconcile net income (loss) to cash flows from operating activities: Adjustments to Reconcile Net Income (Loss) to Cash Provided by (Used in) Operating Activities [Abstract] Represents the amount of milestone payments receivable. Milestone Payments Receivable Milestone payment receivable Measurement Frequency [Axis] Measurement Frequency Proceeds from contingent consideration. Proceeds From Contingent Consideration Proceeds from contingent consideration Maximum percentage of product supplies on net sales. Maximum Percentage Of Product Supplies On Net Sales Maximum percentage of product supplies on net sales Debt Disclosure [Abstract] Marketable Securities [Abstract] Total investments Incremental share-based compensation expense due to achievement of performance criteria Share-Based Payment Arrangement, Plan Modification, Incremental Cost Debt Instrument, Basis Spread on Variable Rate Interest rate added to base rate (as a percent) Building and Building Improvements [Member] Buildings and improvements Building and Improvements Entity Current Reporting Status Entity Current Reporting Status Common Stock, Shares Authorized Ordinary shares, shares authorized Research and Development Expense, Total Research and Development Expense Research and development IRELAND Ireland Right-of-use assets Right-of-use assets, discontinued operating activities Right-of-use assets, discontinued operating activities Earnings (loss) per share from discontinued operations - diluted Discontinuing Operations - Diluted Discontinued Operation, Income (Loss) from Discontinued Operation, Net of Tax, Per Diluted Share Deferred Foreign Income Tax Expense (Benefit) Ireland Discontinued Operations Disposal Groups, Including Discontinued Operations, Disclosure [Text Block] Stock Repurchase Program Authorized Dollar Amount Value of shares authorized under repurchase program Assets [Abstract] ASSETS Represents the information pertaining to VIVITROL. Vivitrol [Member] VIVITROL Revenue from Contract with Customer [Policy Text Block] Revenue from Contracts with Customers Amortization of Intangible Assets Amortization of acquired intangible assets Share-Based Compensation Arrangement by Share-Based Payment Award, Number of Shares Available for Grant Shares of common stock available for issuance Ordinary shares, par value, $0.01 per share; 450,000,000 shares authorized; 172,569,051 and 168,951,193 shares issued; 166,979,833 and 164,377,009 shares outstanding at December 31, 2023 and 2022, respectively Common Stock, Value, Issued Accrued sales discount allowances and reserves line items. Accrued Sales Discount Allowances And Reserves [Line Items] Accrued Sales Discount Allowances And Reserves [Line Items] Repayments of Long-Term Debt, Total Repayments of Long-Term Debt Principal payments of long-term debt Earnings (loss) per share from continuing operations - diluted Continuing Operations - Diluted Income (Loss) from Continuing Operations, Per Diluted Share Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Vested and Expected to Vest, Exercisable, Weighted Average Remaining Contractual Term Weighted average remaining contractual term of stock options exercisable Restructuring Reserve Restructuring Reserve, Ending Balance Restructuring Reserve, Beginning Balance Restructuring Reserve, Total Proceeds from Sale of Property, Plant, and Equipment, Total Proceeds from Sale of Property, Plant, and Equipment Proceeds from the sale of equipment Contract with Customer, Liability, Revenue Recognized Amounts recognized into revenue Tax benefits included in discontinued operations Income Tax Expense (Benefit), Continuing Operations, Discontinued Operations Current Fiscal Year End Date Current Fiscal Year End Date Represents the profit realized on the sale of debt or equity securities categorized as held-to-maturity, trading securities and available-for-sale. Marketable Securities Realized Gain Realized gains Represents the period for resolving default or breach after the receipt of notice for termination of agreement. Collaborative Arrangement Period For Resolving Default Or Breach After Receipt Of Notice For Termination Of Agreement Period for resolving default or breach after the receipt of notice for termination of agreement Share-Based Payment Arrangement, Noncash Expense, Total Share-Based Payment Arrangement, Noncash Expense Share-based compensation expense Auditor Name Auditor Name Rodin Therapeutics Incorporation. Rodin Therapeutics Incorporation [Member] Rodin Therapeutics Incorporation OPERATING INCOME (LOSS) Operating Income (Loss) Additional award paid. Additional Award Paid Additional award paid Operating Activities [Domain] Operating Activities [Axis] Discontinued operation agreement date Discontinued Operation Agreement Date Discontinued operation agreement date. Deferred Income Tax Expense (Benefit), Total Deferred Income Tax Expense (Benefit) Deferred income taxes Total tax (benefit) provision Income Tax Expense (Benefit) INCOME TAX (BENEFIT) PROVISION Research and Development Expense Research and Development Expense [Member] Research and development Back royalties late payment interest Back Royalties Late Payment Interest Back royalties late payment interest. Unrecognized Tax Benefits, Decrease Resulting from Prior Period Tax Positions Reductions based on tax positions related to prior periods Outplacement services Payments For Restructuring Outplacement Services Payments for restructuring outplacement services. Royalty [Member] Royalty Accounts Payable and Accrued Liabilities Disclosure [Text Block] Accounts Payable and Accrued Expenses Available-for-sale debt securities accumulated gross unrealized gain before tax current. Available For Sale Debt Securities Accumulated Gross Unrealized Gain Before Tax Current Short-term investments, Gross Unrealized Gains Concentration Risk, Percentage Concentration risk percentage Summary of Significant Non-cash Items and Capital Expenditures of Discontinued Operations Summary of the Significant Non-cash Items and Capital Expenditures of the Discontinued Operations Share-based compensation expense Share-Based Payment Arrangement, Expense Total share-based compensation expense Share-Based Compensation Arrangement by Share-Based Payment Award, Fair Value Assumptions, Expected Volatility Rate, Maximum Expected stock volatility, maximum (as a percent) Payment, Tax Withholding, Share-Based Payment Arrangement Employee taxes paid related to net share settlement of equity awards Disaggregation of Revenue [Table] Disaggregation Of Revenue [Table] Milestone payments received. Milestone Payments Received Milestone payments received Summary of Discontinued Operations Disposal Groups, Including Discontinued Operations [Table Text Block] Net amounts written off into other (expense) income, net Contract with customer liability recognized through other expense income net. Contract With Customer Liability Recognized Through Other Expense Income Net Increase (Decrease) in Operating Lease Liability Decrease in operating lease liability Twenty twenty six term loans. Twenty Twenty Six Term Loans [Member] 2026 Term Loans 2026 Term Loans, due March 12, 2026 Intangible assets Finite-Lived Intangible Assets, Net, Ending Balance Finite-Lived Intangible Assets, Net, Beginning Balance Finite-Lived Intangible Assets, Net INTANGIBLE ASSETS, NET Net Carrying Amount Income Taxes Paid Cash paid for taxes Revenue from Contract with Customer [Text Block] Revenue from Contracts with Customers Disposal Group Name [Domain] Debt Securities, Held-to-Maturity, Fair Value, Maturity, Allocated and Single Maturity Date, after Year One Through Five After 1 year through 5 years Represents the information pertaining to VUMERITY. Vumerity [Member] VUMERITY License [Member] License revenue Share-Based Payment Arrangement, Expensed and Capitalized, Amount [Table] Schedule Of Employee Service Share Based Compensation Allocation Of Recognized Period Costs [Table] Debt Instrument, Face Amount Purchase of convertible promissory notes Term loans Earnings (Loss) Per Share Earnings Per Share, Policy [Policy Text Block] Effective Income Tax Rate Reconciliation, Change in Deferred Tax Assets Valuation Allowance, Amount Change in valuation allowance Debt Securities, Held-to-Maturity, Amortized Cost, after Allowance for Credit Loss, Maturity, Allocated and Single Maturity Date, after Year One through Five After 1 year through 5 years Unrecognized Tax Benefits, Increase Resulting from Current Period Tax Positions Additions based on tax positions related to the current period Number of significant operating leases. Number Of Significant Operating Leases Number of significant operating leases Schedule of Transfer of Assets and Liabilities Effected in Accordance with Separation Agreements Schedule of the Transfer of Assets and Liabilities was Effected in Accordance with the Separation Agreements [Table Text block] Schedule of the transfer of assets and liabilities was effected in accordance with the separation agreements. Contract liabilities policy. Contract Liabilities Policy Policy [Text Block] Contract Liabilities Summary of significant accounting policies. Summary Of Significant Accounting Policies [Table] Summary Of Significant Accounting Policies [Table] Other (expense) income, net Other Nonoperating Income (Expense), Total Other Nonoperating Income (Expense) Convertible promissory notes. Convertible Promissory Notes [Member] Convertible Promissory Notes In-process R&D Income Tax Reconciliation In Process Research and Development Income tax reconciliation in process research and development. Property, Plant and Equipment [Abstract] Schedule of Revenues by Geographic Location, as Determined by the Location of the Customer Revenue from External Customers by Geographic Areas [Table Text Block] Long-Term Debt, Type [Domain] Long-Term Debt, Type Entity Voluntary Filers Entity Voluntary Filers Debt Securities, Held-to-Maturity, Amortized Cost, after Allowance for Credit Loss, Maturity [Abstract] Held-to-maturity, Amortized Cost Income Tax Expense (Benefit), Effective Income Tax Rate Reconciliation, Amount [Abstract] Reconciliation of effective income tax rate Commitments and Contingencies Disclosure [Abstract] Other Other Assets, Noncurrent OTHER ASSETS Number of unrealized investment securities. Number Of Unrealized Investment Securities Number of unrealized investment securities Effective Income Tax Rate Reconciliation, Nondeductible Expense, Share-Based Payment Arrangement, Amount Share-based compensation Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Grants in Period, Gross Granted (in shares) Other Accrued Liabilities, Current Accrued other Product discounts. Product Discounts [Member] Product Discounts Equity [Text Block] Shareholders' Equity Depreciation, Total Depreciation Depreciation expense Product Information [Line Items] Product Information [Line Items] Interest Paid, Excluding Capitalized Interest, Operating Activities Cash paid for interest COLLABORATIVE ARRANGEMENTS Collaborative Arrangements Disclosure [Abstract] 2024 Finite-Lived Intangible Asset, Expected Amortization, Year One Finite-Lived Intangible Assets, Net, Amortization Expense, Fiscal Year Maturity [Abstract] Expected amortization of intangible assets Equity, Attributable to Parent [Abstract] SHAREHOLDERS’ EQUITY: Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] Fair value Lessee, Operating Lease, Liability, to be Paid, after Year Five Thereafter Represents information pertaining to the license agreement included under the collaboration agreement. License Agreement [Member] License agreement Entity [Domain] Debt Securities, Held-to-Maturity, Fair Value, Maturity [Abstract] Held-to-maturity, Estimated Fair Value Service agreement term Discontinued Operation, Period of Continuing Involvement after Disposal Cost of Goods and Services Sold, Total Cost of Goods and Services Sold Cost of goods manufactured and sold (exclusive of amortization of acquired intangible assets shown below) Amount before allocation of valuation allowances of deferred tax asset attributable to deductible state tax credit carryforwards. Deferred Tax Assets Tax Credit Carryforwards State State tax credits Royalty revenue related to back royalties Royalty Revenue Related to Back Royalties Royalty revenue related to back royalties. Represents the provision for extension of operating lease term. Operating Lease Provision For Extension Of Term Lessee operating lease term of option to extend EARNINGS (LOSS) PER ORDINARY SHARE: Earnings Per Share [Abstract] Lessee, Operating Lease, Liability, to be Paid, Maturity [Table Text Block] Summary of Future Lease Payments Under Non-Cancelable Leases Effective Income Tax Rate Reconciliation, Tax Contingency, Amount, Total Effective Income Tax Rate Reconciliation, Tax Contingency, Amount Uncertain tax positions Investment, Name [Domain] Investment, Name Conversion reissuance (in dollars per share) Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Conversion Reissuance In Period Weighted Average Grant Date Fair Value Share based compensation arrangement by share based payment award equity instruments other than options conversion reissuance in period weighted average grant date fair value. Deferred Tax Liabilities, Net, Total Deferred Tax Liabilities, Net Total deferred tax liabilities Accounting Policies [Abstract] Lessee, Lease, Description [Table] Lessee Lease Description [Table] Foreign Plan [Member] Defined Contribution Plan Luxembourg inland revenue two thousand seventeen. Luxembourg Inland Revenue Two Thousand Seventeen [Member] LTA 2017 Disclosure of the entity's accounting policy for geographic information. Geographic Information Policy [Text Block] Geographic Information Scenario [Axis] Scenario Concentration Risk, Credit Risk, Policy [Policy Text Block] Concentrations Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items] Share Based Compensation Arrangement By Share Based Payment Award [Line Items] Aggregate revenues, net, during the period in the normal course of business. Revenues Net [Member] Revenues Net Short-Term Debt, Refinanced, Amount Earnings (loss) per share - basic Earnings Per Share, Basic Basic Customer Concentration Risk [Member] Customer Concentration Risk Allocation Adjustment Allocation Adjustment Goodwill Allocation Adjustment Goodwill Allocation Adjustment. COMMITMENTS AND CONTINGENT LIABILITIES (Note 19) Commitments and Contingencies Income Statement [Abstract] Debt Securities, Available-for-Sale, Current Investments—short-term Short-term investments, Estimated Fair Value Property, Plant and Equipment Disclosure [Text Block] Property, Plant and Equipment Related Party, Type [Axis] Related Party Increase (Decrease) in Accounts Payable and Accrued Liabilities, Total Increase (Decrease) in Accounts Payable and Accrued Liabilities Accounts payable and accrued expenses Performance Shares [Member] Performance-based stock options Selling, General and Administrative Expenses, Policy [Policy Text Block] Selling, General and Administrative Expenses Contract with Customer, Contract Asset, Contract Liability, and Receivable [Table Text Block] Schedule of Contract Assets and Contract Liabilities Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Vested and Expected to Vest, Outstanding, Number Stock options expected to vest (in shares) Operating lease liabilities-long-term OPERATING LEASE LIABILITIES-LONG-TERM Disposal Group Including Discontinued Operation Operating Lease Liabilities Non-current Disposal group including discontinued operation operating lease liabilities non-current. Statistical Measurement [Domain] Statistical Measurement Net Cash Provided by (Used in) Operating Activities Cash flows provided by operating activities Net income (loss) from continuing operations Net income (loss) from continuing operations NET INCOME (LOSS) FROM CONTINUING OPERATIONS Income (Loss) from Continuing Operations, Net of Tax, Attributable to Parent Document Period End Date Document Period End Date Statistical Measurement [Axis] Statistical Measurement Total operating expenses from discontinued operations Disposal Group, Including Discontinued Operation, Operating Expense Number of equal annual installments for stock vested. Number Of Equal Annual Installments For Stock Vested Number of equal annual installments for stock vested Manufacturing revenue. Manufacturing Revenue [Member] Manufacturing Revenue Commitments and Contingencies Disclosure [Text Block] Commitments and Contingent Liabilities Operating Lease, Payments Payments for operating leases Share Repurchase Program [Axis] Investee [Member] Investee Earnings (loss) per share - diluted Earnings Per Share, Diluted Diluted Product and Service [Domain] Product and Service Cost of goods manufactured Cost of Sales [Member] Cost of goods manufactured and sold Net operating loss carryforwards Deferred Tax Assets, Operating Loss Carryforwards, Total Deferred Tax Assets, Operating Loss Carryforwards Unrecognized Tax Benefits Balance at the end of the period Balance at the beginning of the period Represents information pertaining to RISPERDAL CONSTA, a product of the entity. R I S P E R D A L C O N S T A [Member] RISPERDAL CONSTA Concentration Risk Benchmark [Domain] Concentration Risk Benchmark Credit Concentration Risk [Member] Credit Concentration Risk Share-Based Compensation Arrangement by Share-Based Payment Award, Award Requisite Service Period Number of years from the date of the grant Revenue from Contract with Customer [Abstract] Debt Instrument, Name [Domain] Debt Instrument, Name Fair Value Hierarchy and NAV [Domain] Fair Value Hierarchy and NAV Debt Securities, Available-for-Sale, Fair Value, Fiscal Year Maturity [Abstract] Available-for-sale, Estimated Fair Value Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Exercisable, Number Exercisable at the end of the period (in shares) Conversion Reissuance (in shares) Share Based Compensation Arrangement By Share Based Payment Award Options Conversion Reissuance In Period Share based compensation arrangement by share based payment award options conversion reissuance in period. Represents the patent royalty as a percentage of net sales under the collaborative agreements. Collaborative Arrangement Patent Royalty Rate Patent royalty rate (as a percent) Fair Value, Recurring [Member] Recurring Basis Number of Reportable Segments Number of business segments PROPERTY, PLANT AND EQUIPMENT, NET Property, plant and equipment, net Disposal Group, Including Discontinued Operation, Property, Plant and Equipment, Noncurrent Additional Paid in Capital, Common Stock Additional paid-in capital Assets held for sale Asset, Held-for-Sale, Not Part of Disposal Group, Current Asset, Held-for-Sale, Not Part of Disposal Group, Current, Total Inventory, Policy [Policy Text Block] Inventory Schedule of Maturities of Long-Term Debt [Table Text Block] Scheduled Maturities of Term Loan Facility Income taxes. Income Taxes [Table] Income Taxes [Table] Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Outstanding [Roll Forward] Number of Shares Deferred Tax Assets, Net Net deferred tax assets Defined Contribution Plan, Employer Matching Contribution, Percent of Employees' Gross Pay Percentage of employer contribution matched of the first employee pay Gain (Loss), Foreign Currency Transaction, before Tax, Total Gain (Loss), Foreign Currency Transaction, before Tax Gain (loss) on foreign currency translation Percentage of outstanding principal amount held by lender. Percentage Of Outstanding Principal Amount Held By Lender Percentage of outstanding principal amount held by lender Defined contribution 401 (k) plan. Plan401 K [Member] 401 (K) Plan Conversion reissuance (in shares) Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Conversion Reissuance Grants In Period Share based compensation arrangement by share based payment award equity instruments other than conversion reissuance grants in period. Share-based compensation, accounting modification charge Share-based Compensation Arrangement Accounting Modification Charge Share-based compensation arrangement accounting modification charge. Schedule of Restructuring and Related Costs [Table] Finite-Lived Intangible Assets, Major Class Name [Domain] Finite-Lived Intangible Assets, Major Class Name Summary of Valuation Allowance [Table Text Block] Schedule of Activity in Valuation Allowance Associated with Deferred taxes Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Exercises in Period Exercised (in shares) Share-based compensation expense from continuing operations Share Based Compensation Expense Continued Operations Share-based compensation expense continued operations. Consolidation, Policy [Policy Text Block] Principles of Consolidation New Non-employee Directors New Non Employee Directors [Member] New non-employee directors. Debt Securities, Available-for-Sale, Fair Value, Maturity, Allocated and Single Maturity Date, Year One Within 1 year Liabilities and Equity [Abstract] LIABILITIES AND SHAREHOLDERS’ EQUITY Purchase Commitment, Excluding Long-Term Commitment [Domain] Purchase Commitment, Excluding Long-Term Commitment RIGHT-OF-USE ASSETS Right-of-use assets Disposal Group Including Discontinued Operation Right Of Use Assets Disposal group including discontinued operation right of use assets. AMPYRA AMPYRA [Member] AMPYRA [Member] Entity Address, Postal Zip Code Entity Address, Postal Zip Code Debt Securities, Held-to-Maturity, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss Gross Unrealized Losses Greater than One Year Entity Interactive Data Current Entity Interactive Data Current Cash transferred to Mural Oncology plc at separation Payments Made In Business Separation Payments made in business separation. Represents the excess of amortized cost basis over the fair value of securities that have been in a loss position for less than twelve months for those long term securities that are categorized as held-to-maturity, trading securities and available-for-sale. Long Term Investment Securities Continuous Unrealized Loss Position Less Than12 Months Aggregate Losses Gross Unrealized Losses, Less than One Year Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. Income Taxes [Line Items] Income Taxes [Line Items] Distribution of income (loss) before provision for income taxes CURRENT ASSETS: Current Assets: Disposal Group, Including Discontinued Operation, Assets, Current [Abstract] Represents Janssen, a collaborative partner of the entity. Janssen [Member] Janssen Equity [Abstract] GOODWILL Goodwill Disposal Group, Including Discontinued Operation, Goodwill, Noncurrent Lessee, Operating Lease, Liability, Undiscounted Excess Amount Less: imputed interest Carrying amount, net of valuation reserves and adjustments, as of the balance sheet date of merchandise or goods held by the company that are readily available for sale, located at third party warehouse and shipping service provider. Inventory Finished Goods Net Of Reserves Located At Third Party Warehouse And Shipping Service Provider Finished goods inventory located at third-party warehouse and shipping service provider Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Grants in Period Granted (in shares) Entity Well-known Seasoned Issuer Entity Well-known Seasoned Issuer Cardinal Health. Cardinal Health [Member] Cardinal Health Debt securities available-for-sale continuous unrealized loss position less than 12 months accumulated loss noncurrent. Debt Securities Available For Sale Continuous Unrealized Loss Position Less Than 12 Months Accumulated Loss Noncurrent Long-term investments, Gross Unrealized Losses, Less than One Year Share-Based Compensation Arrangements by Share-Based Payment Award, Options, Exercises in Period, Weighted Average Exercise Price Exercised (in dollars per share) Entity Incorporation, State or Country Code Entity Incorporation, State or Country Code Cash and Cash Equivalents, Policy [Policy Text Block] Cash and Cash Equivalents Represents royalty rate upon termination of related agreement. Collaborative Arrangement Royalty Rate Upon Termination Of Related Agreement Royalty rate upon termination of manufacturing and supply agreement (as a percent) Equity Components [Axis] Equity Components Restructuring and Related Activities [Abstract] Increase (Decrease) in Other Operating Liabilities, Total Increase (Decrease) in Other Operating Liabilities Other long-term liabilities Investments, Debt and Equity Securities [Abstract] Inventory Disclosure [Abstract] Finite-Lived Intangible Assets, Net [Abstract] Finite-lived intangible assets: Represents the 2018 Stock Option and Incentive Plan which provides for issuance of non-qualified and incentive stock options, restricted stock, restricted stock units, cash-based awards and performance shares to employees, officers and directors of, consultants to the company. Stock Option And Incentive Plan2018 [Member] 2018 Plan Schedule of Equity Method Investments [Table] Weighted Average Exercise Price Share Based Compensation Arrangement By Share Based Payment Award Options Weighted Average Exercise Price [Abstract] Weighted Average Exercise Price Additional Premises. Additional Premises [Member] Additional Premises Increase (Decrease) in Contract with Customer, Asset Contract assets Proceeds from Sale, Maturity and Collection of Investments, Total Proceeds from Sale, Maturity and Collection of Investments Sales and maturities of investments Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Vested in Period, Weighted Average Grant Date Fair Value Vested (in dollars per share) Debt securities available-for-sale continuous unrealized loss position less than 12 months accumulated loss current. Debt Securities Available For Sale Continuous Unrealized Loss Position Less Than 12 Months Accumulated Loss Current Short-term investments, Gross Unrealized Losses, Less than One Year Local Phone Number Local Phone Number Property, Plant and Equipment [Line Items] Property Plant And Equipment [Line Items] Property, plant and equipment Sale of Stock [Axis] Number of license agreements partially terminated. Number Of License Agreements Partially Terminated Number of license agreements partially terminated Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Exercisable, Weighted Average Exercise Price Exercisable at the end of the period (in dollars per share) Current Federal Tax Expense (Benefit) U.S. federal Schedule of Equity Method Investments [Line Items] Goodwill Goodwill, Ending Balance Goodwill, Beginning Balance Goodwill, Total GOODWILL Net Carrying Amount Represents information pertaining to Fountain Healthcare Partners II, L.P. of Ireland ("Fountain"), created to carry on the business of investing exclusively in companies and businesses engaged in healthcare, pharmaceutical and life sciences sectors. Fountain Healthcare Partners Ii Lp Of Ireland [Member] Fountain Healthcare Partners II Statement of Cash Flows [Abstract] Comprehensive Income (Loss) Comprehensive Income, Policy [Policy Text Block] The floor for the variable rate base of the debt instrument. Debt Instrument Variable Rate Basis Floor Interest rate, variable interest rate floor (as a percent) Income Tax Authority [Domain] Income Tax Authority Organization, Consolidation and Presentation of Financial Statements [Abstract] Accumulated Other Comprehensive Income (Loss), Net of Tax, Total Accumulated Other Comprehensive Income (Loss), Net of Tax Accumulated other comprehensive loss Property, Plant and Equipment, Policy [Policy Text Block] Property, Plant and Equipment Concentration Risk Benchmark [Axis] Concentration Risk Benchmark Document Annual Report Document Annual Report Biogen. Biogen [Member] Biogen Share-Based Payment Arrangement, Amount Capitalized Share based compensation cost capitalized Common Stock, Par or Stated Value Per Share Ordinary shares, par value (in dollars per share) Numerator: Net Income (Loss) Available to Common Stockholders, Basic [Abstract] Weighted average period for unrecognized share-based compensation expense expected to be recognized Share-Based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Period for Recognition Assignment Assignment [Member] Assignment. Long-Lived Tangible Asset [Axis] Long-Lived Tangible Asset Accrued sales discount allowances and reserves table. Accrued Sales Discount Allowances And Reserves [Table] Accrued Sales Discount Allowances And Reserves [Table] Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Vested and Expected to Vest, Outstanding, Weighted Average Remaining Contractual Term Weighted average contractual remaining life Schedule of Share-Based Compensation Arrangements by Share-Based Payment Award [Table] Schedule Of Share Based Compensation Arrangements By Share Based Payment Award [Table] Intellectual Property [Member] Capitalized IP Collaborative Arrangement Disclosure [Text Block] Collaborative Arrangements Maximum [Member] Maximum This element represents receipt of Alkermes' stock for the exercise of stock options or to satisfy minimum tax withholding obligations related to stock based awards. Receipt Of Company Stock For Exercise Of Stock Options Or To Satisfy Minimum Tax Withholding Obligations Related To Stock Based Awards Value Receipt of Alkermes' shares for the exercise of stock options or to satisfy minimum tax withholding obligations related to share-based awards Contract with Customer, Basis of Pricing [Axis] Contract with Customer, Basis of Pricing Retirement Plan Name [Axis] Repayment Of Royalty Revenue Repayment Of Royalty Revenue Repayment of royalty revenue COMPREHENSIVE INCOME (LOSS): Comprehensive Income (Loss), Net of Tax, Attributable to Parent [Abstract] Contract liabilities. Contract Liabilities [Member] Contract liabilities–short-term Scheduled maturities of term loan two thousand and twenty six. Scheduled Maturities Of Term Loan Two Thousand And Twenty Six Total Schedule of Unrecognized Tax Benefits Roll Forward [Table Text Block] Schedule of Reconciliation of Beginning and Ending Amount of Unrecognized Tax Benefits Fair Value, Inputs, Level 3 [Member] Level 3 APIC, Share-Based Payment Arrangement, Increase for Cost Recognition, Total APIC, Share-Based Payment Arrangement, Increase for Cost Recognition Share-based compensation Fair Value, Recurring and Nonrecurring [Table] Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Table] NET INCREASE (DECREASE) IN CASH AND CASH EQUIVALENTS Cash, Cash Equivalents, Restricted Cash, and Restricted Cash Equivalents, Period Increase (Decrease), Including Exchange Rate Effect Return of investment. Return Of Investments Return of Fountain Healthcare Partners II, L.P. investment Inventory, Work in Process, Net of Reserves Work in process Payables and Accruals [Abstract] Schedule of Income (Loss) Before (Benefit) Provision for Income Taxes by Geographical Area Tabular disclosure of net income or loss before provision for income taxes by geographical area of the entity. Schedule Of Net Income Loss Before Provision For Taxes By Geographical Area Table [Text Block] Contract assets policy. Contract Assets Policy Policy [Text Block] Contract Assets Discontinued Operations Discontinued Operations, Policy [Policy Text Block] Interest Expense [Member] Interest Expense INVESTING ACTIVITIES: Noncash Investing and Financing Items [Abstract] Long-Term Investments [Abstract] Long-term Investments Maximum amount per employee, by the terms of the plan, that the employee may contribute to a defined contribution plan. Defined Contribution Plan Annual Contribution By Per Employee Amount Per employee contribution limit Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Forfeitures in Period Forfeited (in shares) Arbitration award amount paid. Arbitration Award Amount Paid Arbitration award amount paid Severance Payments For Restructuring Severance Payments for restructuring severance. Retirement Plan Sponsor Location [Domain] Retirement Plan Sponsor Location Document Financial Statement Error Correction Document Financial Statement Error Correction [Flag] Aristada and Aristada Initio. Aristada And Aristada Initio [Member] ARISTADA and ARISTADA INITIO Schedule of Antidilutive Securities Excluded from Computation of Earnings Per Share [Table Text Block] Schedule of Anti-Dilutive Potential Common Share Equivalent Excluded from Calculation of Loss Per Share Represents the period after loss carryforwards have been utilized that tax returns remain open to examination. Period After Loss Carryforwards Utilized That Tax Returns Remain Open To Examination Period after loss carryforwards utilized that tax returns remain open to examination Schedule of Inventory, Current [Table Text Block] Schedule of Inventories City Area Code City Area Code Deferred State and Local Income Tax Expense (Benefit) U.S. state Inventory, Net Inventory Total inventory Net Cash Provided by (Used in) Operating Activities [Abstract] CASH FLOWS FROM OPERATING ACTIVITIES: Investments in Debt and Marketable Equity Securities (and Certain Trading Assets) Disclosure [Text Block] Investments Conversion reissuance (in dollars per share) Share Based Compensation Arrangements By Share Based Payment Award Options Conversion Reissuance In Period Weighted Average Exercise Price Share based compensation arrangements by share based payment award options conversion reissuance in period weighted average exercise price Represents the manufacturing process period. Manufacturing Process Period Manufacturing Process period Proceeds from Issuance of Long-Term Debt, Total Proceeds from Issuance of Long-Term Debt Proceeds from the issuance of long-term debt Operating lease right of use asset remeasurement amount. Operating Lease Right Of Use Asset Remeasurement Amount Operating lease right-of-use asset remeasurement amount Customer [Domain] Customer Accumulated Depreciation, Depletion and Amortization, Property, Plant, and Equipment, Ending Balance Accumulated Depreciation, Depletion and Amortization, Property, Plant, and Equipment, Beginning Balance Accumulated Depreciation, Depletion and Amortization, Property, Plant, and Equipment, Total Accumulated Depreciation, Depletion and Amortization, Property, Plant, and Equipment Less: accumulated depreciation Medicaid rebate. Medicaid Rebate [Member] Medicaid Rebate Selling, General and Administrative Expense Selling, General and Administrative Expenses [Member] Selling, general and administrative Represents the excess of amortized cost basis over the fair value of securities that have been in a loss position for less than twelve months for those securities that are categorized as held-to-maturity, trading securities and available-for-sale. Marketable Securities Continuous Unrealized Loss Position Less Than12 Months Aggregate Losses Gross Unrealized Losses, Less than One Year Weighted Average Number of Shares Outstanding, Basic, Total Weighted Average Number of Shares Outstanding, Basic Basic Payment made for licensed intellectual property. Payment Made For Licensed Intellectual Property Payment made for licensed Intellectual Property ("IP") Schedule of Restructuring Activity Restructuring and Related Costs [Table Text Block] Increase decrease in right of use asset. Increase Decrease In Right Of Use Asset Right-of-use assets Disposal Group, Including Discontinued Operation, Operating Income (Loss), Total Operating loss from discontinued operations Disposal Group, Including Discontinued Operation, Operating Income (Loss) Stock Option Awards Employee Stock [Member] Net Cash Provided by (Used in) Financing Activities [Abstract] CASH FLOWS FROM FINANCING ACTIVITIES: Research and Development Expense, Policy [Policy Text Block] Research and Development Expenses The aggregate net change in the difference between the fair value and the carrying value, or in the comparative fair values, of long term debt and equity securities held at each balance sheet date, that was included in earnings for the period. Long Term Investment Securities Unrealized Gain Loss Gross Unrealized Gains Debt Securities, Held-to-Maturity, Accumulated Unrecognized Gain Gross Unrealized Gains Share-Based Payment Arrangement, Restricted Stock Unit, Activity [Table Text Block] Summary of RSU Activity Benefits Payments For Restructuring Benefits Payments for restructuring benefits. This element represents receipt of Alkermes' stock for the exercise of stock options or to satisfy minimum tax withholding obligations related to stock based awards. Receipt Of Company Stock For Exercise Of Stock Options Or To Satisfy Minimum Tax Withholding Obligations Related To Stock Based Awards Shares Receipt of Alkermes' shares for the exercise of stock options or to satisfy minimum tax withholding obligations related to share-based awards (in shares) SEC Schedule, 12-09, Valuation Allowances and Reserves, Period Increase (Decrease), Total SEC Schedule, 12-09, Valuation Allowances and Reserves, Period Increase (Decrease) (Additions) / Reductions Statement [Table] Statement [Table] Share-Based Payment Arrangement, Option, Activity [Table Text Block] Schedule of Stock Option Activity Accounts Receivable [Member] Accounts Receivable Lease agreement lease renewal term. Lease Agreement Lease Renewal Term Lease agreement option to extend renewal term Schedule of Fair Value of Each Stock Option Granted Estimated on The Grant Date Using Weighted-average Assumptions Schedule of Share-Based Payment Award, Stock Options, Valuation Assumptions [Table Text Block] Increase (Decrease) in Contract with Customer, Liability Contract liabilities Document Fiscal Period Focus Document Fiscal Period Focus Lessee, Operating Lease, Liability, to be Paid Total operating lease payments Represents the number of lender holding percentage of outstanding amount. Number Of Lender Holding Percentage Of Outstanding Amount Number of lender holding percentage of outstanding amount Investment, Policy [Policy Text Block] Investments 2025 Lessee, Operating Lease, Liability, to be Paid, Year Two Statement [Line Items] Statement [Line Items] Represents the time-vested restricted stock units awarded by the company to its employees as a form of incentive compensation. Time Based Restricted Stock Unit Awards [Member] Time-based RSU Awards Time-Based RSUs Disclosure of accounting policy for the Contingent consideration Contingent Consideration Policy [Text Block] Contingent Consideration Debt Instrument, Fair Value Disclosure, Total Debt Instrument, Fair Value Disclosure Amount to be realized in future Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount Anti-dilutive potential common share equivalent excluded from calculation of net loss per ordinary share Contract with Customer, Asset, after Allowance for Credit Loss, Total Contract with Customer, Asset, after Allowance for Credit Loss Contract assets Contract assets Licensing Agreements [Member] Collaboration agreements Effective Income Tax Rate Reconciliation, Nondeductible Expense, Other, Amount Other permanent items Schedule of Revenues from External Customers and Long-Lived Assets [Table] Schedule Of Revenues From External Customers And Long Lived Assets [Table] Asset Class [Domain] Asset Class Schedule of Deferred Tax Assets and Liabilities [Table Text Block] Schedule of Components of Net Deferred Tax Assets Noncash or Part Noncash Acquisition, Value of Liabilities Assumed, Total Noncash or Part Noncash Acquisition, Value of Liabilities Assumed Purchased capital expenditures included in accounts payable and accrued expenses Customer [Axis] Customer Award Granted in February 2021 Award Granted in February Two zero Two One [Member] Award granted in February two zero two one. Operating lease liabilities Operating lease liabilities, discontinued operating activities Operating lease liabilities, discontinued operating activities Common Stock [Member] Ordinary Shares Debt Instrument [Line Items] Long-term debt Loss Contingency, Damages Sought, Value Additional sought value for damages as part of requested modification Construction in Progress, Gross Construction in progress Reductions based on the lapse of applicable statutes of limitations Unrecognized Tax Benefits, Reduction Resulting from Lapse of Applicable Statute of Limitations Cash and Cash Equivalents, at Carrying Value, Total Cash and Cash Equivalents, at Carrying Value Cash and cash equivalents Schedule of Share-based Compensation Expense from Continuing and Discontinued Operations Share-Based Payment Arrangement, Expensed and Capitalized, Amount [Table Text Block] Other current assets Other Assets, Current Increase decrease in operating lease liabilities. Increase Decrease In Operating Lease Liabilities Operating lease liabilities Entity Common Stock, Shares Outstanding Entity Common Stock, Shares Outstanding Net (loss) discontinued operations DISCONTINUED OPERATIONS, NET OF TAX Net loss and comprehensive loss from discontinued operations Income (Loss) from Discontinued Operations, Net of Tax, Attributable to Parent Amount of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations attributable to changes in specified foreign income tax contingency. Effective Income Tax Reconciliation Foreign Income Tax Differential1 Irish rate differential Risk and uncertainties. Risk And Uncertainties Policy [Text Block] Risk and Uncertainties Fair Value of Financial Instruments, Policy [Policy Text Block] Fair Value of Financial Instruments Antidilutive Securities, Name [Domain] Antidilutive Securities, Name Schedule of Debt [Table Text Block] Schedule of Long-term Debt LYBALVI. L Y B A L V I [Member] LYBALVI Discontinued Operations and Disposal Groups [Abstract] Cover Cover [Abstract] Selling, General and Administrative Expense, Total Selling, General and Administrative Expense Selling, general and administrative Share Repurchase Program [Domain] Current income tax (benefit) provision: Current Income Tax Expense (Benefit), Continuing Operations [Abstract] Document Fiscal Year Focus Document Fiscal Year Focus Other Operating Income (Expense) [Member] Other income, net Debt Securities, Held-to-Maturity, Fair Value, Maturity, Allocated and Single Maturity Date, Year One Within 1 year Represents the information pertaining to the 2023 Term Loans under the new term loan facility. Twenty Twenty Three Term Loans [Member] 2023 Term Loans, due March 26, 2023 Medicare Part D. Medicare Part D [Member] Medicare Part D Represents the know-how patent royalty as a percentage of net sales under the collaborative agreements. Collaborative Arrangement Know How Royalty Rate Know-how royalty rate (as a percent) Percentage Of Reduction In Work force Percentage Of Reduction In Work force Percentage of reduction in work force Represents the amount of incremental capacity available so long as the entity meets certain conditions. Debt Instrument Incremental Capacity Subject To Satisfaction Of Certain Conditions Incremental capacity Sale of Stock [Domain] Additions Contract with Customer, Asset, Purchase Share-Based Payment Arrangement [Policy Text Block] Share-Based Compensation Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Grants in Period, Weighted Average Grant Date Fair Value Granted (in dollars per share) Proceeds, Issuance of Shares, Share-Based Payment Arrangement, Including Option Exercised, Total Proceeds, Issuance of Shares, Share-Based Payment Arrangement, Including Option Exercised Proceeds from the issuance of ordinary shares under share-based compensation arrangements Valuation Allowance [Line Items] Security Exchange Name Security Exchange Name Long-Term Investments, Total Long-Term Investments INVESTMENTS—LONG-TERM Total long-term investments Share-Based Compensation Arrangement by Share-Based Payment Award, Expiration Period Expiration period Accounts Receivable [Policy Text Block] Receivables, net Domestic Tax Authority [Member] U.S. federal DEFERRED TAX ASSET Deferred tax asset Disposal Group, Including Discontinued Operation, Deferred Tax Assets New Accounting Pronouncements, Policy [Policy Text Block] New Accounting Pronouncements Preferred Stock, Shares Issued Preferred stock shares, issued Preferred Stock, Shares Authorized Preferred stock shares, authorized Represents the ratio of awards other than stock options counted against the total number of shares available for issuance. Share Based Compensation Arrangement By Share Based Payment Award Equity Instrument Other Than Options Count Against Number Of Shares Available For Grant Ratio Ratio of awards other than stock options counted against the total number of shares available for issuance Schedule of Finite-Lived Intangible Assets [Table] Schedule Of Finite Lived Intangible Assets [Table] Property, Plant and Equipment, Gross, Ending Balance Property, Plant and Equipment, Gross, Beginning Balance Property, Plant and Equipment, Gross, Total Property, Plant and Equipment, Gross Property, plant and equipment, gross Accounts payable and accrued expenses. Accounts Payable And Accrued Expenses [Line Items] Accounts Payable And Accrued Expenses [Line Items] Represents the aggregate worldwide net sales tied to know-how royalty under the collaborative agreements. Collaborative Arrangement Net Sales Tied To Know How Royalty Aggregate worldwide net sales Debt Securities, Held-to-Maturity, Amortized Cost, before Other-than-temporary Impairment Amortized Cost Share-based compensation expense from discontinued operations Share-based compensation expense Share-based compensation expense discontinued operations Share-based compensation expense discontinued operations Current State and Local Tax Expense (Benefit) U.S. state Treasury Stock, Shares, Acquired Ordinary shares acquired under repurchase program Share-Based Compensation Arrangements by Share-Based Payment Award, Options, Forfeitures in Period, Weighted Average Exercise Price Forfeited (in dollars per share) Business Acquisition, Acquiree [Domain] Business Acquisition, Acquiree Legal Entity [Axis] Financial Instrument [Axis] Financial Instrument Denominator: Weighted Average Number of Shares Outstanding, Diluted [Abstract] WEIGHTED AVERAGE NUMBER OF ORDINARY SHARES OUTSTANDING: Luxembourg inland revenue two thousand eighteen. Luxembourg Inland Revenue Two Thousand Eighteen [Member] LTA 2018 Lease agreement commencement period. Lease Agreement Commencement Period Lease agreement commencement period Entity Emerging Growth Company Entity Emerging Growth Company Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Exercises in Period, Intrinsic Value Aggregate intrinsic value of stock options exercised Amendment Flag Amendment Flag Debt Securities, Held-to-Maturity, Fair Value Estimated Fair Value Total Number of transition service agreement Number of Transition Service Agreement Number of transition service agreement. Net assets transferred to Mural Disposal Group Including Discontinued Operation Assets and Liabilities Net Disposal group including discontinued operation assets and liabilities net. Contract with Customer, Basis of Pricing [Domain] Contract with Customer, Basis of Pricing Income tax reconciliation nondeductible lobbying expenses. Income Tax Reconciliation Nondeductible Lobbying Expenses Non-deductible lobbying expenses Assets related to discontinued operations ASSETS RELATED TO DISCONTINUED OPERATIONS-LONG-TERM Disposal Group, Including Discontinued Operation, Assets, Noncurrent Disposal Group, Including Discontinued Operation, Assets, Noncurrent, Total Additional royalty revenue potentially to be repaid to Acorda. Potential Additional Award To Be Paid Potential additional award to be paid Transaction costs related to the Separation Transaction costs related to the Separation Effective Income Tax Rate Reconciliation, Tax Credit, Research, Amount R&D credit Represents the excess of amortized cost basis over the fair value of securities that have been in a loss position for more than twelve months for those long term securities that are categorized as held-to-maturity, trading securities and available-for-sale. Long Term Investment Securities Continuous Unrealized Loss Position More Than12 Months Aggregate Losses Gross Unrealized Losses, Greater than One Year Deferred Tax Liabilities, Gross [Abstract] Deferred tax liabilities: Restructuring Restructuring and Related Activities Disclosure [Text Block] Unbilled Contracts Receivable Unbilled receivable Leases [Abstract] Variable Rate [Domain] Variable Rate Amount of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations attributable to intercompany amounts. Effective Income Tax Reconciliation Change In Deferred Tax Assets Intercompany Amounts Intercompany amounts Debt Securities, Available-for-Sale, Unrealized Loss Position, Total Debt Securities, Available-for-Sale, Unrealized Loss Position Aggregate estimated fair value of investments in unrealized loss position ASSETS HELD FOR SALE-LONG-TERM Assets Held For Sale Not Part Of Disposal Group NonCurrent Assets held for sale not part of disposal group noncurrent. Represents the cost of debt and equity securities, which are categorized as long-term held-to-maturity, trading securities and available-for-sale, net of adjustments including accretion, amortization, collection of cash, previous other-than-temporary impairments recognized in earnings (less any cumulative-effect adjustments recognized, as defined), and fair value hedge accounting adjustments, if any. Long Term Investment Amortized Cost Amortized Cost Represents the range of net sales under the collaborative arrangement to determine the know-how royalty percentage. Net Sales Between250 And500 Million [Member] Net sales between $250.0 million and 500.0 million Entity File Number Entity File Number Collaborative Arrangement and Arrangement Other than Collaborative [Line Items] Collaborative Arrangements And Noncollaborative Arrangement Transactions [Line Items] Separation Agreement Separation Agreement [Member] Separation agreement . Non-Rule 10b5-1 Arrangement Modified Non-Rule 10b5-1 Arr Modified [Flag] Non-Rule 10b5-1 Arrangement Modified [Flag]. Other products and services. Other Products And Services [Member] Other Pension and Other Postretirement Plans, Nonpension Benefits, Policy [Policy Text Block] Employee Benefit Plans Equity, Class of Treasury Stock [Line Items] Goodwill and Intangible Assets Disclosure [Abstract] Business Combination, Contingent Consideration Arrangements, Change in Amount of Contingent Consideration, Asset Change in the fair value of contingent consideration Increase (decrease) in fair value of contingent consideration Change in the fair value of contingent consideration Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Vested and Expected to Vest, Exercisable, Aggregate Intrinsic Value Aggregate intrinsic value of stock options exercisable Long-Term Debt, Excluding Current Maturities, Total Long-Term Debt, Excluding Current Maturities LONG-TERM DEBT Long-term debt Holding gain (loss), net of a tax provision (benefit) of $1,195, $(973) and $(706), respectively OCI, Debt Securities, Available-for-Sale, Unrealized Holding Gain (Loss), before Adjustment, after Tax Unrealized gain (loss) on marketable securities, net of tax provision (benefit) Assets Held for Sale Discontinued Operations, Held-for-Sale [Member] Available-for-sale debt securities accumulated gross unrealized gain before tax noncurrent. Available For Sale Debt Securities Accumulated Gross Unrealized Gain Before Tax Noncurrent Long-term investments, Unrealized Gains Cash, Cash Equivalents, Restricted Cash, and Restricted Cash Equivalents, Total Cash, Cash Equivalents, Restricted Cash, and Restricted Cash Equivalents CASH AND CASH EQUIVALENTS—End of period CASH AND CASH EQUIVALENTS—Beginning of period Represents the loss realized on the sale of debt or equity securities categorized as held-to-maturity, trading securities and available-for-sale. Marketable Securities Realized Loss Realized losses State Medicaid Rebates State Medicaid Rebates [Member] State Medicaid rebates. Share-Based Payment Arrangement [Abstract] Award Granted in February 2022 and 2023 Award Granted in February Two zero Two Two And Two Zero Two Three [Member] Award granted in February two zero two two And two zero two three. Disposal Group Classification [Domain] The minimum percentage of revenues or receivables from a single customer that is used as a threshold for disclosure of a concentration of risk. Threshold For Disclosure Percentage Threshold percentage for disclosure of revenue and receivables Amounts recognized into other (expense) income, net Contract with customer liability other (expense) income net recognized. Contract With Customer Liability Other (Expense) Income Net Recognized Accounts Payable, Current, Total Accounts Payable, Current Accounts payable Debt Instrument [Axis] Debt Instrument Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Nonvested, Weighted Average Grant Date Fair Value Unvested at the end of the period (in dollars per share) Unvested at the beginning of the period (in dollars per share) Deferred Tax Assets, Valuation Allowance Valuation allowance Less: valuation allowance Balance at End of Period Balance at Beginning of Period Schedule of Intangible Assets and Goodwill [Table Text Block] Schedule of Goodwill and Intangible Assets Costs and Expenses Total expenses Schedules of Concentration of Risk, by Risk Factor [Table Text Block] Schedule of Revenue and Receivables From Customers Exceeding 10% of Total in Each Category 2024 Long-Term Debt, Maturity, Year One Assets Held for Sale Assets Held for Sale [Policy Text Block] Assets held for sale. Auditor Location Auditor Location Represents the number of equity-based compensation plans under which awards are currently made. Share Based Compensation Arrangement By Share Based Payment Award Number Of Plans Under Which Awards Are Currently Made Number of share-based compensation plan under which awards are currently made ANJESO. A N J E S O [Member] ANJESO Share-Based Compensation Arrangement by Share-Based Payment Award, Fair Value Assumptions, Expected Term Expected option term Debt Securities, Available-for-Sale, Noncurrent Long-term investments, Estimated Fair Value Entity Address, Address Line Two Entity Address, Address Line Two Preferred shares, par value, $0.01 per share; 50,000,000 shares authorized; zero issued and outstanding at December 31, 2023 and 2022, respectively Preferred Stock, Value, Issued Entity Small Business Entity Small Business Entity Shell Company Entity Shell Company 852 Winter Street Lease Winter Street Lease Two [Member] 852 winter street lease two. Title of Individual [Axis] Title of Individual Unrecognized share-based compensation expense Share-Based Payment Arrangement, Nonvested Award, Excluding Option, Cost Not yet Recognized, Amount Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Nonvested, Weighted Average Grant Date Fair Value [Abstract] Weighted Average Grant Date Fair Value Certificates of Deposit [Member] Certificates of deposit Earnings (loss) per share Earnings Per Share [Text Block] Summary of Location of the Assets Long-Lived Assets by Geographic Areas [Table Text Block] Entity Address, Address Line One Entity Address, Address Line One Cash and Cash Equivalents, Fair Value Disclosure Cash equivalents Share-based compensation Expense Share-Based Payment Arrangement, Expensed and Capitalized, Amount [Line Items] Antidilutive Securities [Axis] Antidilutive Securities Janssen Pharmaceutica N.V. Janssen Pharmaceutica N V [Member] Janssen Pharmaceutica N.V. Finite-Lived Intangible Assets, Gross, Total Finite-Lived Intangible Assets, Gross Gross Carrying Amount The limit of annual employee contributions to the plan, as a percentage of their total taxable earnings. Defined Contribution Plan Maximum Employee Contribution Limit As Percentage Of Taxable Earnings Maximum employee contribution limit as a percentage of their total taxable earnings Guaranty date Guaranty Date Guaranty Date Subsequent Event Type [Domain] Subsequent Event Type Total assets Assets Disposal Group, Including Discontinued Operation, Assets Share-Based Compensation Arrangement by Share-Based Payment Award, Fair Value Assumptions, Risk Free Interest Rate, Minimum Risk-free interest rate, minimum (as a percent) Income Statement Location [Axis] Income Statement Location 2026 Long-Term Debt, Maturity, Year Three Share-Based Compensation Arrangement by Share-Based Payment Award, Fair Value Assumptions, Risk Free Interest Rate, Maximum Risk-free interest rate, maximum (as a percent) Foreign derived intangible income Effective Income Tax Rate Reconciliation, FDII, Amount Deferred Tax Assets, Tax Deferred Expense, Reserves and Accruals, Accrued Liabilities Accrued expenses and reserves Share-Based Compensation Arrangement by Share-Based Payment Award, Fair Value Assumptions, Expected Dividend Rate Expected annual dividend yield Contract with Customer, Liability [Abstract] Contract Liabilities [Abstract] Long-Term Debt, Type [Axis] Long-Term Debt, Type Net income (loss) Net Income (Loss), Including Portion Attributable to Noncontrolling Interest, Total Net Income (Loss), Including Portion Attributable to Noncontrolling Interest 2028 Lessee, Operating Lease, Liability, to be Paid, Year Five Fair Value, Inputs, Level 2 [Member] Level 2 Product [Member] Product sales, net Collaborative Arrangement and Arrangement Other than Collaborative [Table] Schedule Of Collaborative Arrangements And Noncollaborative Arrangement Transactions [Table] Depreciation, Depletion and Amortization, Total Depreciation, Depletion and Amortization Depreciation and amortization Product and Service [Axis] Product and Service Contract with Customer, Liability, Noncurrent Contract liabilities Cost of ordinary share acquired during share repurchase program Treasury Stock, Value, Acquired, Cost Method Schedule of accrued sales discounts allowances and reserves. Schedule Of Accrued Sales Discounts Allowances And Reserves Table [Text Block] Summary of Current Provision for Sales, Discounts, Allowances and Reserves Title of 12(b) Security Title of 12(b) Security Total accrued sales discounts, allowances and reserves Carrying value as of the balance sheet date of obligations relating to sales discounts, allowances and reserves. Accrued Sales Discounts Allowances And Reserves Accrued sales discounts, allowances and reserves Effective Income Tax Rate Reconciliation, State and Local Income Taxes, Amount U.S. state income taxes, net of U.S. federal benefit Finite-Lived Intangible Assets, Accumulated Amortization Accumulated Amortization Other Noncash Expense Other non-cash charges Shares Issued, Value, Share-Based Payment Arrangement, after Forfeiture, Total Shares Issued, Value, Share-Based Payment Arrangement, after Forfeiture Issuance of ordinary shares under employee stock plans Threshold percentage of present value of remaining cash flow difference used for determining if debt terms substantially different. Threshold Percentage Comparison Present Value Remaining Cash Flows Threshold percentage comparing present value of remaining cash flows Percentage of net sales in royalty payment. Percentage Of Net Sales In Royalty Payment Percentage of net sales in royalty payment Commitments and contingencies. Commitments And Contingencies [Table] Commitments And Contingencies [Table] Additions of property, plant and equipment Additions of property, plant and equipment, discontinued operations Additions of property, plant and equipment, discontinued operations Number of positions eliminated Restructuring and Related Cost, Expected Number of Positions Eliminated Operating lease liability remeasurement amount. Operating Lease Liability Remeasurement Amount Operating lease liability remeasurement amount Rule10 B51 Trading Plan [Member] Rule10b5-1 Trading plan. Income Tax Authority, Name [Axis] Income Tax Authority, Name Fair Value, Assets Measured on Recurring Basis [Table Text Block] Summary of the Company's Assets and Liabilities Measured at Fair Value on a Recurring Basis OPERATING ACTIVITIES: Operating Activities [Abstract] Operating Activities. Treasury Stock Treasury Stock, Common [Member] Entity Address, Country Entity Address, Country Tabular disclosure of the proceeds from sales and maturities of marketable securities, plus the resulting realized gains and losses. Proceeds And Realized Gain Loss On Marketable Securities Table [Text Block] Schedule of Proceeds from Sales and Maturities of Marketable Securities Plus Resulting Realized Gains and Losses Purchase Commitment, Remaining Minimum Amount Committed Open purchase order commitments Net Cash Provided by (Used in) Investing Activities [Abstract] CASH FLOWS FROM INVESTING ACTIVITIES: Property, Plant and Equipment, Disposals Carrying value at the time of disposition Relating to research and development. Research And Development [Member] Research and development revenue Accounts Payable and Accrued Liabilities, Current Accounts payable and accrued expenses Total accounts payable and accrued expenses State and Local Jurisdiction [Member] U.S. state 900 Winter Street Lease. Winter Street Lease [Member] 900 Winter Street Lease Segment Reporting, Policy [Policy Text Block] Segment Information Dilutive ordinary share equivalents Weighted Average Number of Shares Outstanding, Diluted, Adjustment Weighted Average Number of Shares Outstanding, Diluted, Adjustment, Total Long-Lived Tangible Asset [Domain] Long-Lived Tangible Asset Commitments and contingencies. Commitments And Contingencies [Line Items] Commitments And Contingencies [Line Items] Contract with Customer, Asset, Reclassified to Receivable Transferred to receivables, net Cash and cash equivalents Disposal Group, Including Discontinued Operation, Cash and Cash Equivalents Increase (Decrease) in Inventories, Total Increase (Decrease) in Inventories Inventory Contract liabilities Contract with Customer, Liability, Total Contract with Customer, Liability Contract liabilities at end of the period Contract liabilities at beginning of the period Stock distribution ratio by means of separation of business Stock distribution ratio by means of separation of business. Debt Securities, Available-for-Sale, Fair Value, Maturity, Allocated and Single Maturity Date, after Year One Through Five After 1 year through 5 years Cash and Cash Equivalents [Axis] Cash and Cash Equivalents Stock Repurchase Program, Remaining Authorized Repurchase Amount Value of shares available for repurchase pursuant to repurchase program Common Stock, Shares, Outstanding, Ending Balance Common Stock, Shares, Outstanding, Beginning Balance Common Stock, Shares, Outstanding Ordinary shares, shares outstanding Share-Based Payment Arrangement [Text Block] Share-based Compensation Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Forfeitures, Weighted Average Grant Date Fair Value Forfeited (in dollars per share) Schedule of Product Information [Table] Schedule Of Product Information [Table] Class of Treasury Stock [Table] Represents the notice period required to be served before the termination of the agreement. Collaborative Arrangement Effective Notice Period Required To Be Served For Termination Of Agreement Notice period required to be given before termination of agreement Concentration Risk Type [Domain] Concentration Risk Type Income Statement Location [Domain] Income Statement Location Share-Based Compensation Arrangements by Share-Based Payment Award, Options, Grants in Period, Weighted Average Exercise Price Granted (in dollars per share) Document Type Document Type Unrecognized Tax Benefits, Income Tax Penalties Expense Notice of Assessment Increase in operating lease right of use asset. Increase In Operating Lease Right Of Use Asset Increase in operating lease right of use asset Represents the number of license agreements. Number Of License Agreements Number of license agreements Cash flows provided by (used in) investing activities Net Cash Provided by (Used in) Investing Activities Purchase Commitment, Excluding Long-Term Commitment [Axis] Purchase Commitment, Excluding Long-Term Commitment Counterparty Name [Domain] Counterparty Name Goodwill and Intangible Assets Disclosure [Text Block] Goodwill and Intangible Assets Disposal Group Classification [Axis] Deferred Tax Liabilities, Other Other Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Forfeited in Period Forfeited (in shares) Cash flows (used in) provided by financing activities Net Cash Provided by (Used in) Financing Activities Share-Based Compensation Arrangement by Share-Based Payment Award, Number of Additional Shares Authorized Number of increase in ordinary shares authorized for issuance thereunder Entity Filer Category Entity Filer Category Deferred Tax Assets, Tax Credit Carryforwards, Research Federal research and development credits Cash Flow, Noncash Investing and Financing Activities Disclosure [Abstract] Non-cash investing and financing activities: Operating lease liabilities-short-term Disposal Group Including Discontinued Operation Operating Lease Liabilities Current Disposal group including discontinued operation operating lease liabilities current. Share-Based Compensation Arrangements by Share-Based Payment Award, Options, Expirations in Period, Weighted Average Exercise Price Expired (in dollars per share) Balance Sheet Location [Domain] Balance Sheet Location Income Tax Authority, Name [Domain] Income Tax Authority, Name Variable Rate [Axis] Variable Rate Debt Securities, Held-to-Maturity, Amortized Cost, after Allowance for Credit Loss, Maturity, Allocated and Single Maturity Date, Year One Within 1 year Payments to Acquire Marketable Securities Purchases of investments Tax benefit related to intercompany transfer of inventory Income Tax Expense Benefit Related to Intercompany Transfer of Inventory Income tax expense benefit related to intercompany transfer of inventory. Asset Class [Axis] Asset Class Total other income (expense), net Nonoperating Income (Expense) Deferred Tax Assets, Tax Credit Carryforwards, Total Deferred Tax Assets, Tax Credit Carryforwards Tax credits Liabilities Total liabilities Property, Plant and Equipment [Table] Schedule Of Property Plant And Equipment [Table] Debt Instrument, Description of Variable Rate Basis Variable interest rate base Finite-Lived Intangible Asset, Useful Life Weighted Amortizable Life Equity, Attributable to Parent BALANCE BALANCE Total shareholders’ equity SOFR Secured Overnight Financing Rate (SOFR) Overnight Index Swap Rate [Member] Tabular disclosure of the estimated useful life of long-lived, physical assets that are used in the normal conduct of business to produce goods and services and not intended for resale. Property Plant And Equipment Estimated Useful Lives Table [Text Block] Schedule of Estimated Useful Life of Property, Plant and Equipment Documents Incorporated by Reference [Text Block] Documents Incorporated by Reference Expiration date Trd Arr Expiration Date Trd arr expiration date. Represents the cost of debt and equity securities, which are categorized as held-to-maturity, trading securities and available-for-sale, net of adjustments including accretion, amortization, collection of cash, previous other-than-temporary impairments recognized in earnings (less any cumulative-effect adjustments recognized, as defined), and fair value hedge accounting adjustments, if any. Marketable Securities At Amortized Cost Amortized Cost NET INCOME (LOSS) OTHER INCOME (EXPENSE), NET: Nonoperating Income (Expense) [Abstract] Interest Expense, Total Interest Expense Interest expense Business Description and Basis of Presentation [Text Block] Description of Business and Basis of Presentation Contract with Customer, Asset, after Allowance for Credit Loss, Current, Total Contract with Customer, Asset, after Allowance for Credit Loss, Current Contract assets Contract assets, current Cash and Cash Equivalents [Domain] Cash and Cash Equivalents Award Date [Axis] Corporate Debt Securities [Member] Corporate debt securities Valuation Allowance [Table] Statement of Financial Position [Abstract] Amount of increase in contract with customer liability during the period. Contract With Customer Liability Additions Additions Area of Real Estate Property Area of real estate property Debt Securities, Available-for-Sale, Amortized Cost, Maturity, Allocated and Single Maturity Date, after Year One Through Five After 1 year through 5 years Shares Issued, Shares, Share-Based Payment Arrangement, after Forfeiture, Total Shares Issued, Shares, Share-Based Payment Arrangement, after Forfeiture Issuance of ordinary shares under employee stock plans (in shares) Shares used in calculating diluted earnings (loss) per ordinary share Weighted Average Number of Shares Outstanding, Diluted, Total Weighted Average Number of Shares Outstanding, Diluted Diluted Increase (Decrease) in Receivables, Total Increase (Decrease) in Receivables Receivables Schedule of Reconciliation of Statutory Tax Rate to Effective Tax Rate Schedule of Effective Income Tax Rate Reconciliation [Table Text Block] Represents designated tax departments of governments entitled to levy and collect income taxes from the entity outside the entity's country of domicile, excluding the specified country. Foreign Country Excluding Specified Country [Member] Rest of world Effective Income Tax Rate Reconciliation, Percent, Total Effective Income Tax Rate Reconciliation, Percent Effective tax rate (as a percent) Deferred Federal Income Tax Expense (Benefit) U.S. federal Earnings (loss) per share from continuing operations - basic Continuing Operations - Basic Income (Loss) from Continuing Operations, Per Basic Share Schedule of Accounts Payable and Accrued Liabilities [Table Text Block] Schedule of Accounts Payable and Accrued Expenses Debt Securities, Available-for-Sale, Amortized Cost Total Operating Lease, Weighted Average Remaining Lease Term Weighted average remaining lease term Defined Contribution Plan, Maximum Annual Contributions Per Employee, Percent Maximum percentage of employer contribution matched of employee's Accounts payable and accrued expenses Disposal Group, Including Discontinued Operation, Accounts Payable and Accrued Liabilities, Current Disposal Group, Including Discontinued Operation, Accounts Payable and Accrued Liabilities, Current, Total Use of Estimates, Policy [Policy Text Block] Use of Estimates Income Tax Disclosure [Text Block] Income Taxes Payment for Debt Extinguishment or Debt Prepayment Cost Payment made for debt extinguishment Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] Fair Value Deferred Tax Assets, Net [Abstract] Deferred tax assets: Prepaid expenses and other current assets Disposal Group, Including Discontinued Operation, Prepaid and Other Assets, Current Stock distribution by separation of business Stock distribution by separation of business. Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Outstanding, Weighted Average Exercise Price Outstanding at the end of the period (in dollars per share) Outstanding at the beginning of the period (in dollars per share) Finite-Lived Intangible Assets [Line Items] Goodwill Debt Security, Government, Non-US [Member] Non-U.S. government debt securities Schedule of Basic Earnings (Loss) Per Ordinary Share Schedule of Earnings Per Share, Basic and Diluted [Table Text Block] Disaggregation of Revenue [Line Items] Disaggregation Of Revenue [Line Items] Leasehold Improvements [Member] Leasehold Improvements Leasehold improvements Income Tax Authority [Axis] Income Tax Authority Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items] Denominator: Receivables, Net, Current, Total Receivables, Net, Current Receivables, net Guarantee of fair value Guarantee for Fair Value Guarantee for fair value. Fair Value Disclosures [Abstract] Costs and Expenses [Abstract] EXPENSES: Revenues from External Customers and Long-Lived Assets [Line Items] Geographic Information Represents the number of equity-based compensation plans under which no further awards will be made. Share Based Compensation Arrangement By Share Based Payment Award Number Of Plans Under Which No Further Awards Will Be Made Number of share-based compensation plan under which no further awards will be made Fair Value Hierarchy and NAV [Axis] Fair Value Hierarchy and NAV Measurement Frequency [Domain] Measurement Frequency Other Noncurrent Liabilities [Member] Other Long-Term Liabilities Payments to Acquire Property, Plant, and Equipment, Total Payments to Acquire Property, Plant, and Equipment Additions of property, plant and equipment Reclassification, Comparability Adjustment [Policy Text Block] Reclassification Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Vested in Period Vested (in shares) Employee-related Liabilities, Current, Total Employee-related Liabilities, Current Accrued compensation Fair value of guarantee Guarantees, Fair Value Disclosure Operating Lease, Expense Operating lease expense Business Acquisition [Axis] Business Acquisition Allocation Adjustment Reduction in Goodwill Reduction in Goodwill Goodwill, Period Increase (Decrease) Goodwill, Period Increase (Decrease), Total Proceeds from Sale and Maturity of Marketable Securities Proceeds from the sales and maturities of investments Income Tax Disclosure [Abstract] Finite-Lived Intangible Assets by Major Class [Axis] Finite-Lived Intangible Assets by Major Class Impairment or Disposal of Long-Lived Assets, Including Intangible Assets, Policy [Policy Text Block] Impairment of Long-Lived Assets Represents furniture, fixtures and equipment of the entity. Furniture Fixture And Equipment [Member] Furniture, Fixtures and Equipment Furniture, fixtures and equipment Operating Loss Carryforwards Operating loss carryforwards Retirement Plan Sponsor Location [Axis] Retirement Plan Sponsor Location