Payments to plaintiffs and qualified settlement funds Loss Contingency Accrual, Payments SUPPLEMENTAL INFORMATION: Supplemental Cash Flow Information [Abstract] Net (gain) loss on sale of business and other assets Gain (Loss) Disposition Of Business And Other Assets Gain (Loss) Disposition Of Business And Other Assets Restricted Cash and Cash Equivalents [Axis] Restricted Cash and Cash Equivalents [Axis] Fair Value, Liabilities Measured on Recurring Basis, Disclosure Items [Domain] Fair Value Hierarchy and NAV [Domain] Fair Value Hierarchy and NAV [Domain] NET (LOSS) INCOME NET (LOSS) INCOME Net income (loss) Net Income (Loss) Attributable to Parent Entity Emerging Growth Company Entity Emerging Growth Company OPERATING LEASE ASSETS Operating lease right-of-use assets Operating Lease, Right-of-Use Asset Income Statement Location [Axis] Income Statement Location [Axis] Beginning Balance Ending Balance Finite-Lived Intangible Assets, Accumulated Amortization Statistical Measurement 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Impairment of Intangible Assets, Finite-lived, Effect On Accumulated Amortization Segment reconciling items Segment Reconciling Items [Member] Restrictions on Cash and Cash Equivalents [Table] Restrictions on Cash and Cash Equivalents [Table] GOODWILL AND OTHER INTANGIBLES Goodwill and Intangible Assets Disclosure [Text Block] Concentration risk, percentage Concentration Risk, Percentage Acquisitions Finite-lived Intangible Assets Acquired Nonvested Stock Options Non Vested Stock Options [Member] Non Vested Stock Options [Member] Entity Address, City or Town Entity Address, City or Town Paladin labs inc. Paladin Labs Inc. [Member] Paladin Labs Inc. [Member] Accumulated Deficit Retained Earnings [Member] Tradenames Trade Names [Member] Finance Lease, Liability, Noncurrent, Statement of Financial Position [Extensible List] Finance Lease, Liability, Noncurrent, Statement of Financial Position [Extensible Enumeration] Debt Instrument [Axis] Debt Instrument [Axis] Prepaid and other assets Increase (Decrease) in Prepaid Expense and Other Assets Lawsuit filing period Loss Contingency, Lawsuit Filing Period Loss Contingency, Lawsuit Filing Period 5.375% Senior Notes due 2023 Five Point Three Seven Five Senior Notes Due On Two Thousand Twenty Three [Member] Five Point Three Seven Five Senior Notes Due On Two Thousand Twenty Three [Member] Operating lease liabilities: Liabilities, Noncurrent [Abstract] COMMITMENTS AND CONTINGENCIES Commitments and Contingencies Disclosure [Text Block] 6.00% Senior Notes due 2023 Six Point Zero Percent Senior Notes Due Two Thousand Twenty Three [Member] Six Point Zero Percent Senior Notes Due Two Thousand Twenty Three [Member] Cash paid into Qualified Settlement Funds for mesh legal settlements Settlement Funds, Additions Settlement Funds, Additions Schedule of Antidilutive Securities Excluded from Computation of Earnings Per Share [Table] Schedule of Antidilutive Securities Excluded from Computation of Earnings Per Share [Table] Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items] Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items] Discount rate applied Business Combination, Contingent Consideration, Liability, Measurement Input Term Loan Facility Secured Debt [Member] ADRENALIN® Adrenalin [Member] Adrenalin [Member] Accounts receivable Increase (Decrease) in Accounts Receivable Income tax (benefit) expense Discontinued Operation, Tax Effect of Discontinued Operation Total segment adjusted income from continuing operations before income tax Total segment adjusted income from continuing operations before income tax Adjusted Income (Loss) Before Income Tax Adjusted income (loss) before income tax. 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Sublease income Sublease Income Stay of approval period, Hatch-Waxman Act Loss Contingency, Stay Of Approval Period, Hatch-Waxman Act Loss Contingency, Stay Of Approval Period, Hatch-Waxman Act Cash acquired from acquisition Cash Acquired from Acquisition Beginning of period End of period Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Liability Value Document Type Document Type 2022 Long-Term Debt, Maturity, Year One Litigation-related and other contingencies, net Disposal Group, Including Discontinued Operation, Litigation Related And Other Contingencies Disposal Group Including Discontinued Operation, Litigation Related And Other Contingencies Disaggregation of revenue Disaggregation of Revenue [Table Text Block] VASOSTRICT and/or ADRENALIN VASOSTRICT and/or ADRENALIN [Member] VASOSTRICT and/or ADRENALIN [Member] Reporting Unit [Domain] Reporting Unit [Domain] NET (LOSS) INCOME PER SHARE—DILUTED: Earnings Per Share, Diluted [Abstract] Mesh Liability 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goodwill Finite-lived Intangible Assets, Fair Value Disclosure Scenario [Axis] Scenario [Axis] Additional paid-in capital Additional Paid in Capital Lessee, Lease, Description [Table] Lessee, Lease, Description [Table] 7.50% Senior Secured Notes due 2027 Seven Point Five Percent Senior Secured Notes Due Twenty Twenty Seven [Member] Seven Point Five Percent Senior Secured Notes Due Twenty Twenty Seven [Member] Number of cases alleging personal injury and/or wrongful death Loss Contingency, Number Of Cases Alleging Personal Injury And/Or Wrongful Death Loss Contingency, Number Of Cases Alleging Personal Injury And/Or Wrongful Death Impairments Impairment of Intangible Assets, Indefinite-lived (Excluding Goodwill) LIABILITIES AND SHAREHOLDERS’ DEFICIT Liabilities and Equity [Abstract] Other Sterile Injectables Other Sterile Injectables [Member] Other Sterile Injectables [Member] Restructuring Reserve [Roll Forward] Restructuring Reserve [Roll Forward] Accounts payable and accrued expenses 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notes Senior Notes [Member] Level 3 Inputs Fair Value, Inputs, Level 3 [Member] INVENTORIES Inventory Disclosure [Text Block] Long-term debt, maturity repayment deadline Long-term Debt, Maturity Repayment Deadline Long-term Debt, Maturity Repayment Deadline Number of reportable segments Number of Reportable Segments Net cash adjustments, excluding interest Tax Adjustments, Settlements, and Unusual Provisions Total operating lease liabilities Operating Lease, Liability Foreign currency loss (gain), net Foreign Currency Transaction Gain (Loss), before Tax (LOSS) INCOME FROM CONTINUING OPERATIONS (Loss) income from continuing operations Income (Loss) from Continuing Operations, Net of Tax, Attributable to Parent Ordinary shares, $0.0001 par value; 1,000,000,000 shares authorized; 233,496,634 and 230,315,768 shares issued and outstanding at June 30, 2021 and December 31, 2020, respectively Common Stock, Value, Issued Disaggregation of Revenue [Line Items] Disaggregation of Revenue [Line 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of ordinary share equivalents (in shares) Incremental Common Shares Attributable to Dilutive Effect of Share-based Payment Arrangements Loss contingency, claims settled, number Loss Contingency, Claims Settled, Number Goodwill [Line Items] Goodwill [Line Items] Effect of Currency Translation Intangible Assets, Foreign Currency Translation Gain (Loss) Intangible Assets, Foreign Currency Translation Gain (Loss) Finance Lease, Liability, Current, Statement of Financial Position [Extensible List] Finance Lease, Liability, Current, Statement of Financial Position [Extensible Enumeration] Entity Registrant Name Entity Registrant Name Interest expense, net Interest Income (Expense), Net Contract with Customer, Asset and Liability [Abstract] Contract with Customer, Contract Asset, Contract Liability, and Receivable [Abstract] Principal amount of total long-term debt, less current portion, net Debt Instrument, Face Amount, Excluding Current Maturities Debt Instrument, Face Amount, Excluding 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[Axis] SEGMENT RESULTS Segment Reporting Disclosure [Text Block] Number of counties involved in claims Loss Contingency, Number of Counties Involved in Claims Loss Contingency, Number of Counties Involved in Claims Astora Astora [Member] Astora [Member] Current portion of operating lease liabilities Current operating lease liabilities Operating Lease, Liability, Current 2023 Finite-Lived Intangible Asset, Expected Amortization, Year Two Increase (Decrease) in Stockholders' Equity [Roll Forward] Increase (Decrease) in Stockholders' Equity [Roll Forward] Lehigh Valley Technologies, Inc. acquisitions Lehigh Valley Technologies, Inc. [Member] Lehigh Valley Technologies, Inc. [Member] Share-based compensation Share-based Payment Arrangement, Noncash Expense Pre-tax reversal of accrued employee separation, continuity and other benefit-related costs Accrued Employee Separation, Continuity and Other Benefit-related Costs, before Tax Accrued Employee Separation, Continuity and Other Benefit-related Costs, before Tax Variable Rate [Domain] Variable Rate [Domain] RESTRUCTURING Restructuring and Related Activities Disclosure [Text Block] Additional Paid-in Capital Additional Paid-in Capital [Member] Cash and cash equivalents Cash and Cash Equivalents, at Carrying Value Repayments of debt Repayments of Debt Other comprehensive income (loss), tax, portion attributable to parent Other Comprehensive Income (Loss), Tax, Portion Attributable to Parent Long-term Debt, Type [Domain] Long-term Debt, Type [Domain] Cash paid for amounts included in the measurement of lease liabilities: Cash Flow, Lessee [Abstract] Cash Flow, Lessee [Abstract] Euro deferred shares, shares issued (in shares) Euro Deferred Shares, Shares Issued Euro Deferred Shares, Shares Issued Asset impairment charges Asset impairments Total Asset Impairment Charges Other miscellaneous, net Other Nonoperating Income (Expense) Fair value of long term debt Long-term Debt, Fair Value Depreciation and amortization Disposal Group, Including Discontinued Operation, Depreciation and Amortization Cash distributions to settle disputes from Qualified Settlement Funds Settlement Funds, Payments To Plaintiff Counsel From Qualified Settlement Funds Settlement Funds, Payments To Plaintiff Counsel From Qualified Settlement Funds Certain legal costs Legal Fees Effect of Currency Translation Indefinite-lived Intangible Assets, Foreign Currency Translation Gain (Loss) Capital expenditures, excluding capitalized interest Payments to Acquire Property, Plant, and Equipment Contingent Consideration by Type [Axis] Contingent Consideration by Type [Axis] Maximum Maximum [Member] Loss Contingency, Nature [Domain] Loss Contingency, Nature [Domain] Raw materials Inventory, Raw Materials, Net of Reserves Legal Entity [Axis] Legal Entity [Axis] Federal income tax expense (benefit), continuing operations Effective Income Tax Rate Reconciliation, CARES Act, Amount Effective Income Tax Rate Reconciliation, CARES Act, Amount Award Type [Axis] Award Type [Axis] 2022 Finite-Lived Intangible Asset, Expected Amortization, Year One FINANCING ACTIVITIES: Net Cash Provided by (Used in) Financing Activities [Abstract] Measurement Input Type [Axis] Measurement Input Type [Axis] Consolidation Items [Axis] Consolidation Items [Axis] Total shareholders’ deficit Shareholders' equity, beginning balance Shareholders' equity, ending balance Stockholders' Equity Attributable to Parent Common stock, shares issued (in shares) Common Stock, Shares, Issued Amounts settled Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Liability, Settlements Accounts payable, accrued expenses and other liabilities Increase (Decrease) in Accounts Payable and Accrued Liabilities Restricted cash and cash equivalents Restricted Cash and Cash Equivalents, Current Payments for debt issuance and extinguishment costs Payment For Debt Extinguishment Or Debt Prepayment Cost And Debt Issuance Costs Payment For Debt Extinguishment Or Debt Prepayment Cost And Debt Issuance Costs Loss contingency, plaintiffs, number of counties Loss Contingency, Plaintiffs, Number Of Counties Loss Contingency, Plaintiffs, Number Of Counties Other Specialty Other Specialty Products [Member] Other Specialty Products [Member] Goodwill and Intangible Assets Disclosure [Abstract] Goodwill and Intangible Assets Disclosure [Abstract] Repayments of term loans Repayments of Senior Debt Loss on extinguishment of debt Loss on extinguishment of debt Gain (Loss) on Extinguishment of Debt Debt Instrument, Redemption [Line Items] Debt Instrument, Redemption [Line Items] Performance obligation satisfied in previous period Contract with Customer, Performance Obligation Satisfied in Previous Period Discount rate applied Intangible assets and goodwill, measurement input Intangible Assets, Net, (Including Goodwill), Measurement Input Intangible Assets, Net, (Including Goodwill), Measurement Input OTHER COMPREHENSIVE INCOME (LOSS) Comprehensive Income (Loss) Note [Text Block] OPERATING LEASE LIABILITIES, LESS CURRENT PORTION Noncurrent operating lease liabilities Operating Lease, Liability, Noncurrent Euro deferred shares, shares authorized (in shares) Euro Deferred Shares, Shares Authorized Euro Deferred Shares, Shares Authorized Measurement Frequency [Domain] Measurement Frequency [Domain] Upfront and milestone payments to partners Upfront And Milestone Payments To Partners Upfront and milestone payments to partners. 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Debt issuance costs, gross Debt Issuance Costs, Gross Litigation Case [Axis] Litigation Case [Axis] PROPERTY, PLANT AND EQUIPMENT, NET Property, Plant, and Equipment and Finance Lease Right-of-Use Asset, after Accumulated Depreciation and Amortization Contract liabilities, net - $ change Increase (Decrease) in Contract with Customer, Liability Schedule of components of other income, net Schedule of Other Nonoperating Income, by Component [Table Text Block] Impairments Impairment of Intangible Assets, Finite-lived Settlement, amount awarded to other party Litigation Settlement, Amount Awarded to Other Party Finance lease liabilities: Assets and Liabilities, Lessee [Abstract] 5.875% Senior Secured Notes due 2024 Five Point Eight Seven Five Percent Senior Secured Notes Due Twenty Twenty Four [Member] Five Point Eight Seven Five Percent Senior Secured Notes Due Twenty Twenty Four [Member] Debt instrument, maturity acceleration, amount outstanding threshold Debt Instrument, Maturity 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Contributions To Qualified Settlement Funds Settlement Funds, Cash Contributions To Qualified Settlement Funds Business Acquisition, Acquiree [Domain] Business Acquisition, Acquiree [Domain] Continuing operations (in dollars per share) Income (Loss) from Continuing Operations, Per Basic Share Economic Damages Economic Damages [Member] Economic Damages FAIR VALUE MEASUREMENTS Fair Value Disclosures [Text Block] Restructuring charges Net charges Restructuring Charges Concentration Risk Type [Axis] Concentration Risk Type [Axis] Employee separation, continuity and other benefit-related costs Restructuring And Related Cost, Employee Costs Restructuring And Related Cost, Employee Costs 2024 Finite-Lived Intangible Asset, Expected Amortization, Year Three Financial assets and liabilities measured at fair value on recurring basis Schedule of Fair Value, Assets and Liabilities Measured on Recurring Basis [Table Text Block] Discontinued operations (in dollars per share) Discontinued Operation, 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[Abstract] Debt covenant, trigger for non-appealable judgments for payment of money Debt Instrument, Covenant, Trigger, Judgments for Payment Above Limit Debt Instrument, Covenant, Trigger, Judgments for Payment Above Limit Financial Instruments [Domain] Financial Instruments [Domain] Auxilium acquisition Auxilium Pharmaceuticals, Inc. [Member] Auxilium Pharmaceuticals, Inc. [Member] Restructuring and Related Activities [Abstract] Restructuring and Related Activities [Abstract] Proceeds from sale of business and other assets, net Proceeds from Divestiture of Businesses Changes in qualified settlement funds accounts and product liability balance Schedule of Loss Contingencies by Contingency [Table Text Block] Concentration Risk Benchmark [Domain] Concentration Risk Benchmark [Domain] Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items] Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items] Total Employee Separation, Continuity and Other Benefit-Related Costs And Other Restructuring Costs [Member] Employee Separation, Continuity and Other Benefit-Related Costs And Other Restructuring Costs Debt instrument, extended maturity modification, amount Debt Instrument, Extended Maturity Modification, Amount Debt Instrument, Extended Maturity Modification, Amount Certain property, plant and equipment Tangible Asset Impairment Charges Lease, cost Lease, Cost Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] Income Statement Location [Domain] Income Statement Location [Domain] Schedule of intangible asset impairment charges including goodwill Schedule of Intangible Asset Impairment Charges Including Goodwill [Table Text Block] Schedule of Intangible Asset Impairment Charges Including Goodwill [Table Text Block] SHAREHOLDERS’ DEFICIT: Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest [Abstract] Contingent Consideration Type [Domain] Contingent Consideration Type [Domain] Loss Contingencies [Line Items] Loss Contingencies [Line Items] Number of cases filed by hospitals, health systems, unions, welfare funds or other third-party Loss Contingency, Number Of Cases Filed By Hospitals, Health Systems, Unions, Welfare Funds Or Other Third-Party Loss Contingency, Number Of Cases Filed By Hospitals, Health Systems, Unions, Welfare Funds Or Other Third-Party OTHER LIABILITIES Other Liabilities, Noncurrent VASOSTRICT® Vasostrict [Member] Vasostrict [Member] Schedule of long-term debt instruments Schedule of Long-term Debt Instruments [Table Text Block] Schedule of future amortization expense Schedule of Finite-Lived Intangible Assets, Future Amortization Expense [Table Text Block] Debt Instrument [Line Items] Debt Instrument [Line Items] Earnings Per Share [Abstract] Earnings Per Share [Abstract] Other Intangible Assets [Line Items] Other Intangible Assets [Line Items] Other Intangible Assets [Line Items] Repayments of other indebtedness Repayments of Other Long-term Debt Discontinued operations (in dollars per share) Discontinued Operation, Income (Loss) from Discontinued Operation, Net of Tax, Per Diluted Share ACCOUNTS PAYABLE AND ACCRUED EXPENSES Accounts Payable and Accrued Liabilities Disclosure [Text Block] Net unrealized gain (loss) on foreign currency Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Adjustment, Net of Tax, Portion Attributable to Parent Accrued royalties and other distribution partner payables Accrued Royalties and Other Distribution Partner Payables, Current Accrued Royalties and Other Distribution Partner Payables, Current Revenue from Contract with Customer Benchmark Revenue from Contract with Customer Benchmark [Member] Document Quarterly Report Document Quarterly Report Inventories not yet available for sale Inventory, Not Yet Available For Sale, Net Inventory, Not Yet Available For Sale, Net Strides Pharma Science Limited Strides Pharma Science Limited [Member] Strides Pharma Science Limited Other Other Acquisitions, Excluding Voltaren [Member] Other Acquisitions, Excluding Voltaren Employee separation, continuity and other benefit-related costs Severance Costs Line of Credit Facility [Table] Line of Credit Facility [Table] Reserve for loss contingencies Beginning balance Ending balance Loss Contingency Accrual Entity Ordinary Shares Outstanding (in shares) Entity Common Stock, Shares Outstanding COSTS AND EXPENSES: Costs and Expenses [Abstract] LONG-TERM DEBT, LESS CURRENT PORTION, NET Carrying amount of total long-term debt, less current portion, net Long-term Debt, Excluding Current Maturities Component of Operating Income [Abstract] Component of Operating Income [Abstract] Schedule of Goodwill [Table] Schedule of Goodwill [Table] Document Fiscal Period Focus Document Fiscal Period Focus Effective tax rate (as a percent) Effective Income Tax Rate Reconciliation, Percent Total other intangibles Intangible Assets, Gross [Roll Forward] Intangible Assets, Gross [Roll Forward] Investments [Domain] Investments [Domain] Par Pharmaceutical, Inc. Par Pharmaceutical, Inc. [Member] Par Pharmaceutical, Inc. [Member] Contract with customer, asset, after allowance for credit loss, current Contract with Customer, Asset, after Allowance for Credit Loss, Current CASH, CASH EQUIVALENTS, RESTRICTED CASH AND RESTRICTED CASH EQUIVALENTS, BEGINNING OF PERIOD CASH, CASH EQUIVALENTS, RESTRICTED CASH AND RESTRICTED CASH EQUIVALENTS, END OF PERIOD Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents Common stock, par value (in dollars per share) Common Stock, Par or Stated Value Per Share Discount rate Measurement Input, Discount Rate [Member] Statement of Comprehensive Income [Abstract] Statement of Comprehensive Income [Abstract] CURRENT ASSETS: Assets, Current [Abstract] Redemption period one Non-Call Period Debt Instrument, Redemption, Period One [Member] Beginning Balance Ending Balance Finite-Lived Intangible Assets, Gross Leases [Abstract] Leases [Abstract] Asset impairments Asset Impairment Charges [Member] Asset Impairment Charges [Member] Entity Central Index Key Entity Central Index Key London Interbank Offered Rate (LIBOR) London Interbank Offered Rate (LIBOR) [Member] Security Exchange Name Security Exchange Name Disposal Group Classification [Domain] Disposal Group Classification [Domain] DISCONTINUED OPERATIONS, NET OF TAX (NOTE 3) Loss from discontinued operations, net of tax Loss from discontinued operations, net of tax Income (Loss) from Discontinued Operations, Net of Tax, Attributable to Parent Schedule of accounts payable and accrued liabilities Schedule of Accounts Payable and Accrued Liabilities [Table Text Block] Long-term inventory Inventory, Noncurrent Diluted (in shares) For diluted per share data—weighted average shares (in shares) Weighted Average Number of Shares Outstanding, Diluted Fair value, measurements, recurring Fair Value, Recurring [Member] INCOME TAXES Income Tax Disclosure [Text Block] Service period Share-based Compensation Arrangement by Share-based Payment Award, Award Requisite Service Period Accrued interest Interest Payable, Current Long-term Debt, Type [Axis] Long-term Debt, Type [Axis] Current Fiscal Year End Date Current Fiscal Year End Date Basis spread on variable rate (as a percent) Debt Instrument, Basis Spread on Variable Rate Finance Lease, Right-of-Use Asset, Statement of Financial Position [Extensible List] Finance Lease, Right-of-Use Asset, Statement of Financial Position [Extensible Enumeration] SHAREHOLDERS' DEFICIT Stockholders' Equity Note Disclosure [Text Block] Schedule of disposal groups, including discontinued operations, income statement, balance sheet and additional disclosures Disposal Groups, Including Discontinued Operations [Table Text Block] Schedule of computation of diluted income per share amount Schedule of Antidilutive Securities Excluded from Computation of Earnings Per Share [Table Text Block] Other lease costs and income: Operating Lease, Lease Income [Abstract] Statement of Cash Flows [Abstract] Statement of Cash Flows [Abstract] Certain other restructuring costs Other Restructuring Costs Credit Facility [Axis] Credit Facility [Axis] Finite-Lived Intangible Assets, Major Class Name [Domain] Finite-Lived Intangible Assets, Major Class Name [Domain] Net cash used in investing activities Net Cash Provided by (Used in) Investing Activities Changes in assets and liabilities which provided (used) cash: Increase (Decrease) in Operating Capital [Abstract] OPERATING ACTIVITIES: Net Cash Provided by (Used in) Operating Activities [Abstract] XIAFLEX® Xiaflex [Member] Xiaflex [Member] Schedule of Goodwill And Other Intangibles [Table] Schedule of Goodwill And Other Intangibles [Table] Schedule of Goodwill and Other Intangibles [Table]. 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